MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 8c6b81a7eb5b33af1522fe1fc4be9b1f30b91934e8246127a61533131cc4c804. 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: 18


Intelligence 18 IOCs YARA 12 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 8c6b81a7eb5b33af1522fe1fc4be9b1f30b91934e8246127a61533131cc4c804
SHA3-384 hash: a4da3defbb1fb667bbd2932877aead06ea19a116cb09d2903290d5d79388bb8d6550b1f8fed7db13444b482956cec6b1
SHA1 hash: cb7fa4cec4456551798187d9f2d26853d6648d36
MD5 hash: 3dd299068013da51e3ef7e4d6ce0753a
humanhash: victor-cola-cup-may
File name:8c6b81a7eb5b33af1522fe1fc4be9b1f30b91934e8246127a61533131cc4c804
Download: download sample
Signature AgentTesla
Create hunting rule
File size:242'176 bytes
First seen:2023-11-09 11:11:58 UTC
Last seen:2023-11-13 08:35:14 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 6144:c2uygwEfIE0kkksQhlFYbxV7NCZdmOqIRF:iygwEfIE0kkksQhlZZQO
Threatray 1'486 similar samples on MalwareBazaar
TLSH T1CF3410037E88EB15D5A83E3782EF6C2413B2B0C71633C60B6F49AF5618516925D7EB2D
TrID 60.4% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.8% (.SCR) Windows screen saver (13097/50/3)
8.7% (.EXE) Win64 Executable (generic) (10523/12/4)
5.4% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.1% (.EXE) Win16 NE executable (generic) (5038/12/1)
Reporter adrian__luca
Tags:AgentTesla exe

Intelligence

File Origin
# of uploads :
2
# of downloads :
295
Origin country :
HU HU
Vendor Threat Intelligence
Malware family:
agenttesla
Create hunting rule
ID:
1
File name:
8c6b81a7eb5b33af1522fe1fc4be9b1f30b91934e8246127a61533131cc4c804
Verdict:
Malicious activity
Analysis date:
2023-11-09 11:17:36 UTC
Tags:
stealer agenttesla
Link:
https://app.any.run/tasks/e8737f81-0ae7-4709-ab7d-67e50c85b10c

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
Win.Packed.Msilperseus-9956591-0
Create hunting rule

Win.Packed.Generic-10003641-0
Create hunting rule

Win.Packed.Generic-10011753-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Using the Windows Management Instrumentation requests
Сreating synchronization primitives
DNS request
Sending a custom TCP request
Creating a file in the %AppData% subdirectories
Reading critical registry keys
Sending an HTTP GET request
Creating a window
Setting a keyboard event handler
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Stealing user critical data
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
anti-vm control evasive fingerprint greyware hacktool keylogger lolbin packed packed remote replace stealer
Link:
https://www.filescan.io/uploads/654cbe9a993fbf888b6c0068/reports/59f3cc05-d042-4b6e-8818-730666d5262c/overview
Verdict:
Malicious
Labled as:
Dacic.64A56CA5.A.Generic
Link:
https://www.hybrid-analysis.com/sample/8c6b81a7eb5b33af1522fe1fc4be9b1f30b91934e8246127a61533131cc4c804
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/2b16bcc3-9223-44db-9d10-fc3e7fc33057
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1339625
Signature
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Contains functionality to log keystrokes (.Net Source)
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
Installs a global keyboard hook
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)
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)
Yara detected AgentTesla
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1339625 Sample: vc1B6Fhn15.exe Startdate: 09/11/2023 Architecture: WINDOWS Score: 100 19 smtp.mailo.com 2->19 21 proxy-b.mailo.com 2->21 23 2 other IPs or domains 2->23 29 Found malware configuration 2->29 31 Malicious sample detected (through community Yara rule) 2->31 33 Antivirus / Scanner detection for submitted sample 2->33 35 4 other signatures 2->35 6 vc1B6Fhn15.exe 16 5 2->6         started        11 PjUEr.exe 14 2 2->11         started        13 PjUEr.exe 2 2->13         started        signatures3 process4 dnsIp5 25 api4.ipify.org 64.185.227.156, 443, 49705, 49707 WEBNXUS United States 6->25 27 proxy-b.mailo.com 213.182.54.20, 49706, 49708, 49715 ECRITEL-FRANCEISPandwebhostingFR France 6->27 15 C:\Users\user\AppData\Roaming\...\PjUEr.exe, PE32 6->15 dropped 17 C:\Users\user\...\PjUEr.exe:Zone.Identifier, ASCII 6->17 dropped 37 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 6->37 39 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 6->39 41 Tries to steal Mail credentials (via file / registry access) 6->41 43 Hides that the sample has been downloaded from the Internet (zone.identifier) 6->43 45 Antivirus detection for dropped file 11->45 47 Multi AV Scanner detection for dropped file 11->47 49 Machine Learning detection for dropped file 11->49 51 Tries to harvest and steal browser information (history, passwords, etc) 13->51 53 Installs a global keyboard hook 13->53 file6 signatures7
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/8c6b81a7eb5b33af1522fe1fc4be9b1f30b91934e8246127a61533131cc4c804
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/8c6b81a7eb5b33af1522fe1fc4be9b1f30b91934e8246127a61533131cc4c804/
Threat name:
ByteCode-MSIL.Trojan.Whispergate
Create hunting rule
Status:
Malicious
First seen:
2023-11-09 11:14:04 UTC
File Type:
PE (.Net Exe)
Extracted files:
1
AV detection:
22 of 24 (91.67%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=rrvydj7llmz26fjc7yp4jpu3d4ylsgju5asgcj5gcuzrghgezaca._file
Verdict:
malicious
Label(s):
agenttesla_v4
Create hunting rule
Similar samples:
0326c4ad07721087e1233d322222f2b787e19f9e795cf6c46d36f6e69d482826
AgentTesla
08dee64a7678819af1f98d97c614dc08afd87d2964497cb6f9a5c917a075f534
AgentTesla
4addfc44ac782f7f180bae561f244800c583e7fb113b7875fc34819badfe0d3e
AgentTesla
4f1a449c4179eb2b282228281d26bc92fd17821b24a1a66b50e37021d5704a74
AgentTesla
72e967aa15bae1e4b38fded2c8ad8201cb4230324d98a6ba3afe8c204d645bf7
AgentTesla
8c6b81a7eb5b33af1522fe1fc4be9b1f30b91934e8246127a61533131cc4c804
AgentTesla
fdf0ee91f641ab4d55e25928ba08e37611aeb783f0c157e412ce165496eca24d
AgentTesla
+ 1'476 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/231109-natwksad44/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Adds Run key to start application
Looks up external IP address via web service
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:
8c6b81a7eb5b33af1522fe1fc4be9b1f30b91934e8246127a61533131cc4c804
MD5 hash:
3dd299068013da51e3ef7e4d6ce0753a
SHA1 hash:
cb7fa4cec4456551798187d9f2d26853d6648d36
Detections:
AgentTesla
Create hunting rule
win_agent_tesla_g2
Create hunting rule
Link:
https://www.unpac.me/results/7a3f39b3-1113-4457-93b8-97d2c908c499/
Malware family:
AgentTesla
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/8c6b81a7eb5b/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
0.77
Link:
https://yomi.yoroi.company/submissions/8c6b81a7eb5b33af1522fe1fc4be9b1f30b91934e8246127a61533131cc4c804

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: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: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

File information

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

Malspam

AgentTesla

Executable exe 8c6b81a7eb5b33af1522fe1fc4be9b1f30b91934e8246127a61533131cc4c804

(this sample)

  
Delivery method
Distributed via e-mail attachment

Comments