MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b9ed438f763584171822b73a28273427a0923cca26b8e40b008e3aefbcf48d79. 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 17 File information Comments
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SHA256 hash: b9ed438f763584171822b73a28273427a0923cca26b8e40b008e3aefbcf48d79
SHA3-384 hash: ad2dc668661a2a0b856a71707cfe09728d62c329f7a43d42fd32b1c38d20b167f6e14b535e38918526c3db36824f8aed
SHA1 hash: 62baf3ff2623429dd7c3a9e2c011e8419482b833
MD5 hash: 4139eb079206e8a99e5a801a5f2c74d0
humanhash: fix-papa-quebec-uniform
File name:rDHLAWB5032675620.pif
Download: download sample
Signature Formbook
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File size:808'960 bytes
First seen:2024-02-12 11:20:29 UTC
Last seen:2024-02-12 13:29:02 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'659 x AgentTesla, 19'469 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 24576:SpNlCZoi0e8UZDdEVjZ7OifqWC+cn4Mfo68bsh:Sf+oirDMXHC+Q40ab
TLSH T1320523066648CF25CBB92FF608A0910047F9D55B74A6E36FADE621CE3873F414B92B17
TrID 63.0% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
11.2% (.SCR) Windows screen saver (13097/50/3)
9.0% (.EXE) Win64 Executable (generic) (10523/12/4)
5.6% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
3.8% (.EXE) Win32 Executable (generic) (4504/4/1)
Reporter FXOLabs
Tags:exe FormBook pif

Intelligence

File Origin
# of uploads :
2
# of downloads :
299
Origin country :
BR BR
Vendor Threat Intelligence
Malware family:
agenttesla
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ID:
1
File name:
b9ed438f763584171822b73a28273427a0923cca26b8e40b008e3aefbcf48d79.exe
Verdict:
Malicious activity
Analysis date:
2024-02-12 11:26:48 UTC
Tags:
evasion stealer agenttesla
Link:
https://app.any.run/tasks/697cfdd9-ee73-461f-9b9c-b7555ca956e8

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/475818/
Detection(s):
SecuriteInfo.com.BackDoor.AgentTeslaNET.3.8259.23614.UNOFFICIAL
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Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Сreating synchronization primitives
Creating a process with a hidden window
Creating a file in the %AppData% directory
Enabling the 'hidden' option for recently created files
Adding an access-denied ACE
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
Adding an exclusion to Microsoft Defender
Enabling autorun by creating a file
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
masquerade packed
Link:
https://www.filescan.io/uploads/65c9ff26f3eb3349c33f76e0/reports/c25aae60-0da1-4799-8d0a-e0711390cb32/overview
Verdict:
Malicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/b9ed438f763584171822b73a28273427a0923cca26b8e40b008e3aefbcf48d79
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
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Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/705c2bfd-7a6a-4fa3-8968-95d14d40bc48
Result
Threat name:
AgentTesla, PureLog Stealer
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Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1390701
Signature
.NET source code contains method to dynamically call methods (often used by packers)
.NET source code contains potential unpacker
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
Injects a PE file into a foreign processes
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)
Sample uses string decryption to hide its real strings
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
Sigma detected: Scheduled temp file as task from temp location
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
Yara detected PureLog Stealer
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1390701 Sample: rDHLAWB5032675620.pif.exe Startdate: 12/02/2024 Architecture: WINDOWS Score: 100 42 mail.htgroup-libya.com.ly 2->42 44 ip-api.com 2->44 46 2 other IPs or domains 2->46 54 Found malware configuration 2->54 56 Malicious sample detected (through community Yara rule) 2->56 58 Sigma detected: Scheduled temp file as task from temp location 2->58 60 12 other signatures 2->60 8 rDHLAWB5032675620.pif.exe 7 2->8         started        12 BDArYVRaabhrXk.exe 5 2->12         started        signatures3 process4 file5 38 C:\Users\user\AppData\...\BDArYVRaabhrXk.exe, PE32 8->38 dropped 40 C:\Users\user\AppData\Local\Temp\tmpB6D.tmp, XML 8->40 dropped 62 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 8->62 64 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 8->64 66 Uses schtasks.exe or at.exe to add and modify task schedules 8->66 74 2 other signatures 8->74 14 rDHLAWB5032675620.pif.exe 15 2 8->14         started        18 powershell.exe 23 8->18         started        20 powershell.exe 21 8->20         started        26 5 other processes 8->26 68 Multi AV Scanner detection for dropped file 12->68 70 Machine Learning detection for dropped file 12->70 72 Injects a PE file into a foreign processes 12->72 22 BDArYVRaabhrXk.exe 12->22         started        24 schtasks.exe 12->24         started        signatures6 process7 dnsIp8 48 ip-api.com 208.95.112.1, 49708, 49713, 80 TUT-ASUS United States 14->48 50 htgroup-libya.com.ly 162.251.85.153, 49710, 49714, 49715 PUBLIC-DOMAIN-REGISTRYUS United States 14->50 52 api.ipify.org 172.67.74.152, 443, 49707, 49712 CLOUDFLARENETUS United States 14->52 28 conhost.exe 18->28         started        30 WmiPrvSE.exe 18->30         started        32 conhost.exe 20->32         started        76 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 22->76 78 Tries to steal Mail credentials (via file / registry access) 22->78 80 Tries to harvest and steal browser information (history, passwords, etc) 22->80 34 conhost.exe 24->34         started        36 conhost.exe 26->36         started        signatures9 process10
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/b9ed438f763584171822b73a28273427a0923cca26b8e40b008e3aefbcf48d79
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/b9ed438f763584171822b73a28273427a0923cca26b8e40b008e3aefbcf48d79/
Threat name:
ByteCode-MSIL.Spyware.Negasteal
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Status:
Malicious
First seen:
2024-02-12 08:59:33 UTC
File Type:
PE (.Net Exe)
Extracted files:
14
AV detection:
20 of 24 (83.33%)
Threat level:
  2/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=xhwuhd3wgwcbogbcw45cqjzue6qjepgke24oicyary5o7phurv4q._file
Verdict:
malicious
Label(s):
agenttesla_v4
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agenttesla
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Result
Malware family:
agenttesla
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Score:
  10/10
Tags:
family:agenttesla keylogger spyware stealer trojan
Link:
https://tria.ge/reports/240212-nfzzsabg8x/
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Looks up external IP address via web service
Checks computer location settings
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:
2d925078a44436f6466a01fddf4b2dc6349cf487a0c63255008ffd8af22a7b43
MD5 hash:
99b5e35aad6fea4ae7abae2e5968e975
SHA1 hash:
f7295833490f5985919801037509bfb0617cd40e
Detections:
AgentTesla
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win_agent_tesla_g2
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INDICATOR_SUSPICIOUS_EXE_Referenfces_File_Transfer_Clients
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Agenttesla_type2
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INDICATOR_SUSPICIOUS_Binary_References_Browsers
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INDICATOR_SUSPICIOUS_EXE_VaultSchemaGUID
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INDICATOR_SUSPICIOUS_EXE_References_Messaging_Clients
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INDICATOR_SUSPICIOUS_EXE_SandboxHookingDLL
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INDICATOR_EXE_Packed_GEN01
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INDICATOR_SUSPICIOUS_EXE_References_Confidential_Data_Store
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Link:
https://www.unpac.me/results/4ea8f8eb-59e0-4fe9-b3ec-6775b7e41807/
SH256 hash:
0465fd7efe2a2a6f67c310fca7e4ac0cd9e02b46331a690793e5e3874b4b23e9
MD5 hash:
b602bd842e5643ea4346dc7eb1d022df
SHA1 hash:
f70a373d12b75a4d5321aba3b79dabad6663f3bb
Link:
https://www.unpac.me/results/4ea8f8eb-59e0-4fe9-b3ec-6775b7e41807/
SH256 hash:
d2cf3273461ffa1b29715828f358368312ae4f08a731f4e449a44f6dc50e26c5
MD5 hash:
df7936d5ea0c80f3003b445c7f8deb44
SHA1 hash:
b995b22e77a11cda256e84a01ccadb85451460ed
Link:
https://www.unpac.me/results/4ea8f8eb-59e0-4fe9-b3ec-6775b7e41807/
SH256 hash:
a7097659d0b8886c761709d7309bf378a7fbc7a325e2d1f4e7a1113698344f4f
MD5 hash:
d5c69b521525fc9e0ad51e65154c63aa
SHA1 hash:
9f9b885250ce857678b0941217f213d9f103f7e0
Link:
https://www.unpac.me/results/4ea8f8eb-59e0-4fe9-b3ec-6775b7e41807/
SH256 hash:
3014b859be7cafca84f61ab3398e0832d80175d76dc6ff4a45df7b2fef39dcaf
MD5 hash:
17cbde8bc5d57e164c1daa95d1b37d0b
SHA1 hash:
4856da540fd30d018fa511c9ce705871e1e2affa
Link:
https://www.unpac.me/results/4ea8f8eb-59e0-4fe9-b3ec-6775b7e41807/
SH256 hash:
b9ed438f763584171822b73a28273427a0923cca26b8e40b008e3aefbcf48d79
MD5 hash:
4139eb079206e8a99e5a801a5f2c74d0
SHA1 hash:
62baf3ff2623429dd7c3a9e2c011e8419482b833
Link:
https://www.unpac.me/results/4ea8f8eb-59e0-4fe9-b3ec-6775b7e41807/
Malware family:
AgentTesla
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Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/b9ed438f7635/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/b9ed438f763584171822b73a28273427a0923cca26b8e40b008e3aefbcf48d79

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
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Author:ditekshen
Description:AgentTeslaV3 infostealer payload
Rule name:AgentTesla_DIFF_Common_Strings_01
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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
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Author:ditekSHen
Description:Detect packed .NET executables. Mostly AgentTeslaV4.
Rule name:INDICATOR_SUSPICIOUS_Binary_References_Browsers
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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
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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
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Author:ditekSHen
Description:Detects executables referencing many email and collaboration clients. Observed in information stealers
Rule name:INDICATOR_SUSPICIOUS_EXE_Referenfces_File_Transfer_Clients
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Author:ditekSHen
Description:Detects executables referencing many file transfer clients. Observed in information stealers
Rule name:INDICATOR_SUSPICIOUS_EXE_SandboxHookingDLL
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Author:ditekSHen
Description:Detects binaries and memory artifacts referencing sandbox DLLs typically observed in sandbox evasion
Rule name:INDICATOR_SUSPICIOUS_EXE_VaultSchemaGUID
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Author:ditekSHen
Description:Detects executables referencing Windows vault credential objects. Observed in infostealers
Rule name:malware_Agenttesla_type2
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Author:JPCERT/CC Incident Response Group
Description:detect Agenttesla in memory
Reference:internal research
Rule name:NET
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Author:malware-lu
Rule name:NETexecutableMicrosoft
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Author:malware-lu
Rule name:pe_imphash
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Rule name:Skystars_Malware_Imphash
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Author:Skystars LightDefender
Description:imphash
Rule name:Windows_Trojan_AgentTesla_ebf431a8
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Author:Elastic Security

File information

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

Malspam

Formbook

Executable exe b9ed438f763584171822b73a28273427a0923cca26b8e40b008e3aefbcf48d79

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/475818/

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