MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 66e4e0b05fbe673afbd9f23ada369eaab823c2ce0285b5004068d6b03e3449e7. While MalwareBazaar tries to identify whether the sample provided is malicious or not, there is no guarantee that a sample in MalwareBazaar is malicious.

Database Entry


Formbook


Vendor detections: 17


Intelligence 17 IOCs YARA 19 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 66e4e0b05fbe673afbd9f23ada369eaab823c2ce0285b5004068d6b03e3449e7
SHA3-384 hash: 13afee0e607a2eb7e8e0aacc928b3fb9e4087efbeb7bef9444f6649f87c3981362e3b0fcfc1ef51ac062dabe11f8ec43
SHA1 hash: 616317b2de7a62935c0630439b4bd884e8c79f3e
MD5 hash: 3fdac5be870ce5d0c30c06854203624a
humanhash: jupiter-delta-orange-vegan
File name:Doc Inv & Packing list 04015032024.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:1'031'680 bytes
First seen:2024-04-15 14:39:51 UTC
Last seen:2024-04-15 15:33:55 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'462 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 12288:UJ4NBFTi6/LSqFb4R7u59FSIogAHpXBoftbQleal:a4NH/LScb4Vu5aIogIpXe6lea
Threatray 622 similar samples on MalwareBazaar
TLSH T154259DA12265533EDCBD44BCB02190B5CE66BD67060AD4AD8CC13DAB3D69DE27470E3E
TrID 71.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.2% (.EXE) Win64 Executable (generic) (10523/12/4)
6.3% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.3% (.EXE) Win32 Executable (generic) (4504/4/1)
2.0% (.ICL) Windows Icons Library (generic) (2059/9)
Reporter malwarelabnet
Tags:AgentTesla exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
329
Origin country :
CA CA
Vendor Threat Intelligence
Malware family:
agenttesla
Create hunting rule
ID:
1
File name:
66e4e0b05fbe673afbd9f23ada369eaab823c2ce0285b5004068d6b03e3449e7.exe
Verdict:
Malicious activity
Analysis date:
2024-04-15 14:41:04 UTC
Tags:
evasion stealer agenttesla
Link:
https://app.any.run/tasks/28b187f3-0c73-4b8b-8f01-c4c0ad8162e3

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Creating a file in the %AppData% directory
Enabling the 'hidden' option for recently created files
Adding an access-denied ACE
Сreating synchronization primitives
Creating a process with a hidden window
Creating a file in the %temp% directory
Launching a process
Unauthorized injection to a recently created process
Restart of the analyzed sample
Creating a file
Using the Windows Management Instrumentation requests
DNS request
Connection attempt
Sending a custom TCP request
Sending an HTTP GET request
Creating a file in the %AppData% subdirectories
Reading critical registry keys
Moving a file to the Program Files subdirectory
Replacing files
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Stealing user critical data
Adding an exclusion to Microsoft Defender
Enabling autorun by creating a file
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
packed
Link:
https://www.filescan.io/uploads/661d3c455a92da32813f6a76/reports/72f934ac-38f7-4eaa-b40a-e5fda2a645b2/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/66e4e0b05fbe673afbd9f23ada369eaab823c2ce0285b5004068d6b03e3449e7
Result
Verdict:
MALICIOUS
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Malware family:
Agent Tesla
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/07d5072c-413f-4c8d-a56a-bc4fedde0570
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1426171
Signature
.NET source code contains potential unpacker
.NET source code contains very large array initializations
Adds a directory exclusion to Windows Defender
Check if machine is in data center or colocation facility
Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent)
Contains functionality to log keystrokes (.Net Source)
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
Injects a PE file into a foreign processes
Loading BitLocker PowerShell Module
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines)
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
Sigma detected: Scheduled temp file as task from temp location
Snort IDS alert for network traffic
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to harvest and steal browser information (history, passwords, etc)
Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected AgentTesla
Yara detected AntiVM3
Yara detected Generic Downloader
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1426171 Sample: Doc Inv & Packing list  040... Startdate: 15/04/2024 Architecture: WINDOWS Score: 100 59 mail.almaks.rs 2->59 61 ip-api.com 2->61 63 api.ipify.org 2->63 71 Snort IDS alert for network traffic 2->71 73 Found malware configuration 2->73 75 Malicious sample detected (through community Yara rule) 2->75 77 15 other signatures 2->77 8 Doc Inv & Packing list  04015032024.exe 7 2->8         started        12 XJRRUUSuj.exe 5 2->12         started        14 NcnBt.exe 2->14         started        16 NcnBt.exe 2->16         started        signatures3 process4 file5 55 C:\Users\user\AppData\Roaming\XJRRUUSuj.exe, PE32 8->55 dropped 57 C:\Users\user\AppData\Local\...\tmpEAF7.tmp, XML 8->57 dropped 89 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 8->89 91 Adds a directory exclusion to Windows Defender 8->91 93 Injects a PE file into a foreign processes 8->93 18 Doc Inv & Packing list  04015032024.exe 16 5 8->18         started        23 powershell.exe 23 8->23         started        25 schtasks.exe 1 8->25         started        95 Multi AV Scanner detection for dropped file 12->95 97 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 12->97 99 Machine Learning detection for dropped file 12->99 27 XJRRUUSuj.exe 12->27         started        35 4 other processes 12->35 29 NcnBt.exe 14->29         started        37 3 other processes 14->37 31 NcnBt.exe 16->31         started        33 schtasks.exe 16->33         started        signatures6 process7 dnsIp8 65 mail.almaks.rs 77.105.36.120, 49714, 49715, 49725 ORIONTELEKOM-ASRS Serbia 18->65 67 ip-api.com 208.95.112.1, 49709, 49713, 49719 TUT-ASUS United States 18->67 69 api.ipify.org 104.26.13.205, 443, 49708, 49712 CLOUDFLARENETUS United States 18->69 51 C:\Users\user\AppData\Roaming\...51cnBt.exe, PE32 18->51 dropped 53 C:\Users\user\...53cnBt.exe:Zone.Identifier, ASCII 18->53 dropped 79 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 18->79 81 Tries to steal Mail credentials (via file / registry access) 18->81 83 Hides that the sample has been downloaded from the Internet (zone.identifier) 18->83 85 Loading BitLocker PowerShell Module 23->85 39 WmiPrvSE.exe 23->39         started        41 conhost.exe 23->41         started        43 conhost.exe 25->43         started        87 Tries to harvest and steal browser information (history, passwords, etc) 31->87 45 conhost.exe 33->45         started        47 conhost.exe 35->47         started        49 conhost.exe 37->49         started        file9 signatures10 process11
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/66e4e0b05fbe673afbd9f23ada369eaab823c2ce0285b5004068d6b03e3449e7
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/66e4e0b05fbe673afbd9f23ada369eaab823c2ce0285b5004068d6b03e3449e7/
Threat name:
Win32.Spyware.Negasteal
Create hunting rule
Status:
Malicious
First seen:
2024-04-15 13:12:33 UTC
File Type:
PE (.Net Exe)
Extracted files:
35
AV detection:
25 of 36 (69.44%)
Threat level:
  2/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=m3sobmc7xzttv66z6i5nunu6vk4chqwoakc3kacandllaprujhtq._file
Verdict:
malicious
Label(s):
agenttesla_v4
Create hunting rule
agenttesla
Create hunting rule
Similar samples:
4ec8f72bf35c4a1de223b92521d3e0c996809eaf52f50960d8580e89be6152e7
Formbook
66e4e0b05fbe673afbd9f23ada369eaab823c2ce0285b5004068d6b03e3449e7
Formbook
75c96c8d4e720fe1290200707fcca94188b4525dcc8ae2f1dfe49068b7bb3e83
Formbook
7845739be7bf4d602cbaa0f0a900bea3c631c439eb57fe53d92b3686c49c4b80
Formbook
a3a6bfe5a3988d524fafea932f3c02cefb58c149a99900ff9bde8c4c9f317723
Formbook
d42df773a5031e58adb497c874fcf6d5b723aaf6eadd29283a834a08d9cf712d
Formbook
d965c77ee44072fa2e0dd4bf339a30f44f816de49608a4bc71fc9d59280a3749
Formbook
+ 612 additional samples on MalwareBazaar
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
family:agenttesla keylogger persistence spyware stealer trojan
Link:
https://tria.ge/reports/240415-r1vscagh25/
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Adds Run key to start application
Looks up external IP address via web service
Checks computer location settings
Reads WinSCP keys stored on the system
Reads data files stored by FTP clients
Reads user/profile data of local email clients
Reads user/profile data of web browsers
AgentTesla
Unpacked files
SH256 hash:
aeae89278b5d72669b0e8f94b9135253e8fb11f745e661cbf5d948fdd3a34be2
MD5 hash:
80ac7e920ccdf0b0c2c1b88ae96f8f20
SHA1 hash:
e727b90ffb567231809ce752288c71cd600f02e7
Link:
https://www.unpac.me/results/35b3dcfc-9879-4cfe-b5b2-a322c772a4c3/
SH256 hash:
fd1ecc110c0133a6f1930ad125775ff62f9f93b553b59c075216e73a741526fb
MD5 hash:
8c024b7fa0417a269a8dbf60612275b4
SHA1 hash:
74740bd42df5423238e72ee1292757f35c986fa6
Link:
https://www.unpac.me/results/35b3dcfc-9879-4cfe-b5b2-a322c772a4c3/
SH256 hash:
bbb93c827d1166228af72abd796f405d3c3346bdba8557e64646fc221c0e489b
MD5 hash:
cd95d6ddd6670bba2a196c133b122af8
SHA1 hash:
73b4923fe69f3b4ec049d9207ae16154843655c2
Detections:
AgentTesla
Create hunting rule
win_agent_tesla_g2
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_Referenfces_File_Transfer_Clients
Create hunting rule
Agenttesla_type2
Create hunting rule
INDICATOR_SUSPICIOUS_Binary_References_Browsers
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_VaultSchemaGUID
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_References_Messaging_Clients
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_SandboxHookingDLL
Create hunting rule
INDICATOR_EXE_Packed_GEN01
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_References_Confidential_Data_Store
Create hunting rule
Link:
https://www.unpac.me/results/35b3dcfc-9879-4cfe-b5b2-a322c772a4c3/
SH256 hash:
6ead44426b9ecae00002d69c0c4be091434d756efe7483614531c39d9cdcb405
MD5 hash:
c8ca3dd877f3189353c77cd4eabb1f7e
SHA1 hash:
12ef6375e5cfb0aae8141494f2a0d2c3fb6b0eca
Detections:
INDICATOR_EXE_Packed_SmartAssembly
Create hunting rule
Link:
https://www.unpac.me/results/35b3dcfc-9879-4cfe-b5b2-a322c772a4c3/
Parent samples :
4ec8f72bf35c4a1de223b92521d3e0c996809eaf52f50960d8580e89be6152e7
d82adbafec869ce93ab6133e0f88ae81e1f138d6f31bd90aa054fc4331001169
a3a6bfe5a3988d524fafea932f3c02cefb58c149a99900ff9bde8c4c9f317723
bc8e5c7e7dacfb3ed91a8fb6aa5c878bdc52e39ce1c4c797ec39862a53345ce4
8b3e308bf8008d70c9993b67aed96d3c0b0e472efd9e8335ec8e6e4f1b7b6e69
7845739be7bf4d602cbaa0f0a900bea3c631c439eb57fe53d92b3686c49c4b80
fadcd7b36622cde793fdb8b3c509c13efb05a57e5227ea5c0dac37ef49a5cb02
66e4e0b05fbe673afbd9f23ada369eaab823c2ce0285b5004068d6b03e3449e7
8ae053d9300b897c0009559407842f893ca81461f707172cc42a324436839a56
522df31fa6822a48a743918cc4371daaa6ca5aade2713ddf6e4a7726c78d54a7
39d953c3a7a07ccac490d3286fe0c1a079fa2e5041bdc9bc74585b5beae6de7a
24e1635d9baec3de0506b2574420ccec046c903278316dfc461abb19b13b6de9
837c9f462983fee07c9648d487f7ff5e1ec82c9b45d0ae9337f8c452cd0e6b5c
88662dd7853cd4f04a590fc65bd5f431add70a7e9c645e0dbc7bd4d3708c491b
7038b1250cc9380861d92e721d364cb844459f87ecc3fe002b59e97d35926dfa
dedb50b5fe07672b55fc3cbc497b917ce9cde55ffafa5a855cc42addaee124f7
75854947a6a21c6fdacee3b080ad9f9c8c86546b54410a968d6f09c23e5d00c9
8c304594adb8d9835dce06ef5b3c130b7fa299c76e88d204c998401b71266859
eedd6d6a9ec4bf82ca87e66c1ae5b86983e8479598df71f3602283b93dd07035
1a632b809dda5ccb587a4c6dc66f7b0e118e17d91f8e6813a1cb36dfe3396771
fad3e7058eb2fa88ce97e62a6a243748d6736f9c4e21e4112ed61a40813588b2
66a0cfa14afdb23dec776fa355b9f89551405989b9838db6398c77ee6c73c084
ba03ce2bfa7e568a1f401420156219b97fce9bbfb3fb391783c804ac75df665e
a7f6e78f6b0dde7599e5388e4e994f79d5a0950db56092c0e2bd0ca9d07f708b
6f786b8f8dd18709b9e4ad44e33cb1074d55aa2f0f3cd1fe3759e8795df0a3a9
e347a46c3060085556d9ec4577d577ab08ee49910495ed084e8059883c75e7da
8eb0fdf0ff3b38ae84311b29effb0030a3b9a38430f7b8ee7918d2eb1301b12e
d405284f75cde4b8c45e3d5c3b41c7bbd6db2c75788cb6d0b1deec5ea60559a4
d6e165b127f88b60636959975f143221c8de8bef290f662917f9f61e55f2bf33
9513ea80cc5dabab23c0069ed1b8caaff8d2d10ae9e842bda19a69eb5140a497
64b47fde027cfd04023331dcd19612933dc9b9d77731b487844c129d0d354b20
ff939a5a3ccca65092f55808e05edec69e6db26df74db1b743cdc96f4c872279
7abd4b1c93d30c7ab8f817ebcf83262950131614590c9b254f05449ec493818c
17ffcd130215ae5b3f8ba4f4aa5577abdf7c44a0c2e70619c35e42bafbbb3a82
40bb8b7b9fec345f4aa54b05cc02fa42b404b9de341e07f7c6d7a0c1a1d801ff
82f32be71d9c226d53658209924e4e534383b0db5481dbd49923692ef5666940
edba3afe3fedc9e2ef23525c676755c2bdb76836cd4946eb4d97b22a535991be
98206390a847ef2600f916f0076f687d5261ff98ca02b5292fdf44017ca0e006
f2664bdfd035d146843f1575528eb9694a98b32f99488058a0e04885ad62e9c2
e609540945ebef9d1596ca2b25b84c647093c5cd2739bd956d65d78b0b3aa7e7
3815bc3a78dc96a0af4aca4446b3afa741d3910530ae69b06895b0e499d49aa6
9bf25ebe467e570fc91e2003b17061c765fcb54b6d505a7db43263981504fa5f
7d8a3cc2392ce50d2f75137711acb7358d30157108bfb221c509b0afbab197ec
SH256 hash:
66e4e0b05fbe673afbd9f23ada369eaab823c2ce0285b5004068d6b03e3449e7
MD5 hash:
3fdac5be870ce5d0c30c06854203624a
SHA1 hash:
616317b2de7a62935c0630439b4bd884e8c79f3e
Link:
https://www.unpac.me/results/35b3dcfc-9879-4cfe-b5b2-a322c772a4c3/
Malware family:
AgentTesla
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/66e4e0b05fbe/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/66e4e0b05fbe673afbd9f23ada369eaab823c2ce0285b5004068d6b03e3449e7

YARA Signatures

MalwareBazaar uses YARA rules from several public and non-public repositories, such as YARAhub and Malpedia. Those are being matched against malware samples uploaded to MalwareBazaar as well as against any suspicious process dumps they may create. Please note that only results from TLP:CLEAR rules are being displayed.

Rule name:AgentTeslaV3
Create hunting rule
Author:ditekshen
Description:AgentTeslaV3 infostealer payload
Rule name:AgentTeslaV5
Create hunting rule
Author:ClaudioWayne
Description:AgentTeslaV5 infostealer payload
Rule name:AgentTesla_DIFF_Common_Strings_01
Create hunting rule
Author:schmidtsz
Description:Identify partial Agent Tesla strings
Rule name:DebuggerCheck__RemoteAPI
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:INDICATOR_EXE_Packed_GEN01
Create hunting rule
Author:ditekSHen
Description:Detect packed .NET executables. Mostly AgentTeslaV4.
Rule name:INDICATOR_SUSPICIOUS_Binary_References_Browsers
Create hunting rule
Author:ditekSHen
Description:Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers.
Rule name:INDICATOR_SUSPICIOUS_EXE_References_Confidential_Data_Store
Create hunting rule
Author:ditekSHen
Description:Detects executables referencing many confidential data stores found in browsers, mail clients, cryptocurreny wallets, etc. Observed in information stealers
Rule name:INDICATOR_SUSPICIOUS_EXE_References_Messaging_Clients
Create hunting rule
Author:ditekSHen
Description:Detects executables referencing many email and collaboration clients. Observed in information stealers
Rule name:INDICATOR_SUSPICIOUS_EXE_Referenfces_File_Transfer_Clients
Create hunting rule
Author:ditekSHen
Description:Detects executables referencing many file transfer clients. Observed in information stealers
Rule name:INDICATOR_SUSPICIOUS_EXE_SandboxHookingDLL
Create hunting rule
Author:ditekSHen
Description:Detects binaries and memory artifacts referencing sandbox DLLs typically observed in sandbox evasion
Rule name:INDICATOR_SUSPICIOUS_EXE_VaultSchemaGUID
Create hunting rule
Author:ditekSHen
Description:Detects executables referencing Windows vault credential objects. Observed in infostealers
Rule name:malware_Agenttesla_type2
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect Agenttesla in memory
Reference:internal research
Rule name:Multifamily_RAT_Detection
Create hunting rule
Author:Lucas Acha (http://www.lukeacha.com)
Description:Generic Detection for multiple RAT families, PUPs, Packers and suspicious executables
Rule name:NET
Create hunting rule
Author:malware-lu
Rule name:NETexecutableMicrosoft
Create hunting rule
Author:malware-lu
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:Windows_Trojan_AgentTesla_ebf431a8
Create hunting rule
Author:Elastic Security
Reference:https://www.elastic.co/security-labs/attack-chain-leads-to-xworm-and-agenttesla

File information

The table below shows additional information about this malware sample such as delivery method and external references.

BLint

The following table provides more information about this file using BLint. BLint is a Binary Linter to check the security properties, and capabilities in executables.

Findings
IDTitleSeverity
CHECK_AUTHENTICODEMissing Authenticodehigh
CHECK_DLL_CHARACTERISTICSMissing dll Security Characteristics (HIGH_ENTROPY_VA)high

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