MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 623f49d69c71450cfe5211101ea64b83a1721b08c22a7169694d339711c5cdbb. 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


AgentTesla


Vendor detections: 15


Intelligence 15 IOCs YARA 14 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 623f49d69c71450cfe5211101ea64b83a1721b08c22a7169694d339711c5cdbb
SHA3-384 hash: e20336f533ba5923ee138ee61550decae1266991cb226d49e61bcef3afb7114c6aed0dbcaa3d06cec2e04e45059c4362
SHA1 hash: aa1a39dc85083d048a7e801886fd5ad7980de40d
MD5 hash: f746395cebe988dde5cd5980dc67e17d
humanhash: iowa-texas-december-carpet
File name:rRFQ.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:900'608 bytes
First seen:2024-03-12 11:05:51 UTC
Last seen:2024-03-12 12:43:55 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'744 x AgentTesla, 19'610 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 12288:h/Sr+pAQ3inVFanfz6lNp/qgjX46pB9kwwUHh7X2BM1QzUApjk:I+AQ32HEb0/l46LWNkrQf
TLSH T146150256BB20C94BD4295B725D039660A666CFA43E33C81EF82E373FCB7A7C42E41525
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 FXOLabs
Tags:AgentTesla exe

Intelligence

File Origin
# of uploads :
2
# of downloads :
420
Origin country :
BR BR
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
623f49d69c71450cfe5211101ea64b83a1721b08c22a7169694d339711c5cdbb.exe
Verdict:
Malicious activity
Analysis date:
2024-03-12 11:17:55 UTC
Tags:
stealer
Link:
https://app.any.run/tasks/5ebc6324-9404-4c41-b371-b224f76baff2

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/478761/
Detection(s):
SecuriteInfo.com.BackDoor.AgentTeslaNET.6.26798.32005.UNOFFICIAL
Create hunting rule

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
Creating a file
Using the Windows Management Instrumentation requests
Moving a file to the Program Files subdirectory
Replacing files
Adding an exclusion to Microsoft Defender
Enabling autorun by creating a file
Unauthorized injection to a system process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
packed
Link:
https://www.filescan.io/uploads/65f03720c1137bbf1498870d/reports/2f0bcb8a-d323-4419-a243-ef189d147b1d/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_90%
Link:
https://www.hybrid-analysis.com/sample/623f49d69c71450cfe5211101ea64b83a1721b08c22a7169694d339711c5cdbb
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/e52954f2-82dd-4b74-a188-056952069b50
Result
Threat name:
AgentTesla, PureLog Stealer
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1407472
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
Allocates memory in foreign processes
Contains functionality to log keystrokes (.Net Source)
Found malware configuration
Initial sample is a PE file and has a suspicious name
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)
Sigma detected: Bad Opsec Defaults Sacrificial Processes With Improper Arguments
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 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
Writes to foreign memory regions
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: 1407472 Sample: rRFQ.exe Startdate: 12/03/2024 Architecture: WINDOWS Score: 100 46 discordapp.com 2->46 48 api.ipify.org 2->48 54 Snort IDS alert for network traffic 2->54 56 Found malware configuration 2->56 58 Malicious sample detected (through community Yara rule) 2->58 60 13 other signatures 2->60 8 rRFQ.exe 7 2->8         started        12 batqFoTSyIb.exe 5 2->12         started        signatures3 process4 file5 42 C:\Users\user\AppData\...\batqFoTSyIb.exe, PE32 8->42 dropped 44 C:\Users\user\AppData\Local\...\tmpE42F.tmp, XML 8->44 dropped 62 Uses schtasks.exe or at.exe to add and modify task schedules 8->62 64 Writes to foreign memory regions 8->64 66 Allocates memory in foreign processes 8->66 68 Adds a directory exclusion to Windows Defender 8->68 14 RegSvcs.exe 15 2 8->14         started        18 powershell.exe 23 8->18         started        20 powershell.exe 23 8->20         started        22 schtasks.exe 1 8->22         started        70 Multi AV Scanner detection for dropped file 12->70 72 Machine Learning detection for dropped file 12->72 74 Injects a PE file into a foreign processes 12->74 24 RegSvcs.exe 12->24         started        26 schtasks.exe 12->26         started        signatures6 process7 dnsIp8 50 discordapp.com 162.159.133.233, 443, 49709, 49719 CLOUDFLARENETUS United States 14->50 52 api.ipify.org 172.67.74.152, 443, 49708, 49713 CLOUDFLARENETUS United States 14->52 76 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 14->76 78 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 14->78 80 Tries to steal Mail credentials (via file / registry access) 14->80 28 WerFault.exe 14->28         started        30 conhost.exe 18->30         started        32 WmiPrvSE.exe 18->32         started        34 conhost.exe 20->34         started        36 conhost.exe 22->36         started        82 Tries to harvest and steal browser information (history, passwords, etc) 24->82 38 WerFault.exe 24->38         started        40 conhost.exe 26->40         started        signatures9 process10
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/623f49d69c71450cfe5211101ea64b83a1721b08c22a7169694d339711c5cdbb
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/623f49d69c71450cfe5211101ea64b83a1721b08c22a7169694d339711c5cdbb/
Threat name:
ByteCode-MSIL.Trojan.FormBook
Create hunting rule
Status:
Malicious
First seen:
2024-03-11 12:07:24 UTC
File Type:
PE (.Net Exe)
Extracted files:
8
AV detection:
25 of 37 (67.57%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=mi7utvu4ofcqz7ssceib5jslqoqxegyiyivhc2ljjuzzoeofzw5q._file
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
family:agenttesla keylogger spyware stealer trojan
Link:
https://tria.ge/reports/240312-m7ex9ahc66/
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Looks up external IP address via web service
Checks computer location settings
AgentTesla
Malware Config
C2 Extraction:
https://discordapp.com/api/webhooks/1209857093079924746/aRqkMI9ucnV7HnU-fejtpg1DyaC4R3yGnT_b8inR8VBAY9G-4x9zyP7I4nNnmj3b-zVu
Unpacked files
SH256 hash:
06a1ae787e808d6287de314be8bec64ef2e0d3bc1bf2ea71ae268c7b8fb19e2d
MD5 hash:
91b39e533d48f5fa25ac604da90b3d8d
SHA1 hash:
f5dadf1e8fcbe64609e4cd78a27e2810f7a6e69e
Link:
https://www.unpac.me/results/1a2941d4-2df8-4170-a2ef-1204d77f2a90/
SH256 hash:
c8c1020fe926cc1851b73c1915ad32e2fc393dccb402782aca8f4ea6379ba84d
MD5 hash:
ef7cf89d9ec52b18a8f5b6ee49820f46
SHA1 hash:
dcf9cb9bb3f72ca4b3cc0c00b27bd9ce10b554bb
Link:
https://www.unpac.me/results/1a2941d4-2df8-4170-a2ef-1204d77f2a90/
SH256 hash:
cbacf405564689d07533f56ff6e5550c0a29bfd5b657e97e2fdb5dce6559916e
MD5 hash:
6a1bf4efa062f903253bbeabe5b7785c
SHA1 hash:
7b8a78f79db04a42075a1e6d061b13dbe2cd6898
Link:
https://www.unpac.me/results/1a2941d4-2df8-4170-a2ef-1204d77f2a90/
SH256 hash:
69ab6c45374eb4cd63c7a2a4825dc576cd75cf8f3356b698363953cd1de73c4a
MD5 hash:
9252206984ac51e110bfe00caddf297b
SHA1 hash:
309ec3d9277d4f11ae66d3ebfd03095372a8efe6
Link:
https://www.unpac.me/results/1a2941d4-2df8-4170-a2ef-1204d77f2a90/
SH256 hash:
75718dc30092023d760766734ed3bcd3181721966101f3a17ff5f6a59e5f1463
MD5 hash:
636fe4bb1e86fe4141802a4bf0d2b275
SHA1 hash:
0d3fb211a0a29c2b6a5d7d11a066f5d02c205538
Detections:
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_EXE_Packed_GEN01
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_References_Confidential_Data_Store
Create hunting rule
Link:
https://www.unpac.me/results/1a2941d4-2df8-4170-a2ef-1204d77f2a90/
Parent samples :
2d0cc209781f9684ceea2a4701d6ba603e5e0243ab6e1c76c6822e1d2bace234
623f49d69c71450cfe5211101ea64b83a1721b08c22a7169694d339711c5cdbb
285dbc8362784007c8e0a4060f48bea0818563129e5c824d34393f2c714c1a9e
58c468eb6c6c1c30e136a4c6eb71d894188609b6eb176fb13e72848735790530
eade4e1bbdf552ff46ef4548d3d92219ed8f5be16f44e20b12be41df10a59cb8
SH256 hash:
623f49d69c71450cfe5211101ea64b83a1721b08c22a7169694d339711c5cdbb
MD5 hash:
f746395cebe988dde5cd5980dc67e17d
SHA1 hash:
aa1a39dc85083d048a7e801886fd5ad7980de40d
Link:
https://www.unpac.me/results/1a2941d4-2df8-4170-a2ef-1204d77f2a90/
Malware family:
AgentTesla
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/623f49d69c71/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
0.90
Link:
https://yomi.yoroi.company/submissions/623f49d69c71450cfe5211101ea64b83a1721b08c22a7169694d339711c5cdbb

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: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_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:NET
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_Generic_Threat_808f680e
Create hunting rule
Author:Elastic Security
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.

Malspam

AgentTesla

Executable exe 623f49d69c71450cfe5211101ea64b83a1721b08c22a7169694d339711c5cdbb

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/478761/

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

Comments