MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 81a02891cf62fb184788fa5fdae98c63c4a896cd504526f768000484b16444f0. 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: 12


Intelligence 12 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 81a02891cf62fb184788fa5fdae98c63c4a896cd504526f768000484b16444f0
SHA3-384 hash: 8177f86e5452ecd26a1396f5e97ac296ff2436939b0508c2308d66aabb47c3a47c47af795380dd2c71e9f400e0d9813e
SHA1 hash: 81bcef8ee88b77a41fd31e6f81ff90854617e979
MD5 hash: 45e17622bc006a4caf32d14dc4cbd625
humanhash: summer-queen-whiskey-michigan
File name:draft BL.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:496'128 bytes
First seen:2021-11-02 07:04:41 UTC
Last seen:2021-11-02 09:31:22 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'742 x AgentTesla, 19'607 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 6144:l7vIl1sgaq2DX+5vLFsehb1xG20Z6W1FhakcYR14DrbWetR6TlQcVvtI3seTuoDv:3q3LFr11420Z6WfhakrRazWetRo5CTl
Threatray 12'495 similar samples on MalwareBazaar
TLSH T1FFB4E0C392E48326E5694FB450713D2053B77EAE2958F69C6E9878DB36737C28130AD3
Reporter cocaman
Tags:AgentTesla exe

Intelligence

File Origin
# of uploads :
2
# of downloads :
95
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
draft BL.exe
Verdict:
Suspicious activity
Analysis date:
2021-11-02 07:24:48 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/f18fc4c4-848a-41a5-9dd0-2a41896fc048

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
AgentTeslaV3
Create hunting rule
Link:
https://www.capesandbox.com/analysis/201300/
Detection(s):
SecuriteInfo.com.Trojan.GenericKD.47300229.15364.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Launching a process
Creating a file in the %temp% directory
Delayed writing of the file
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
obfuscated packed
Link:
https://www.filescan.io/uploads/6180e3251c62c356607e7ea7/reports/f330911c-28fd-4787-b424-d176055adb84/overview
Result
Verdict:
UNKNOWN
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/b0c9a65f-5a16-4ff6-af6b-07adf2d1f7f9
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.adwa.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/881016
Signature
.NET source code contains potential unpacker
.NET source code contains very large array initializations
Allocates memory in foreign processes
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
Injects a PE file into a foreign processes
Modifies the hosts file
Multi AV Scanner detection for submitted file
Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines)
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
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 ftp login credentials
Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Writes to foreign memory regions
Yara detected AgentTesla
Yara detected AntiVM3
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 513450 Sample: draft BL.exe Startdate: 02/11/2021 Architecture: WINDOWS Score: 100 45 Found malware configuration 2->45 47 Multi AV Scanner detection for submitted file 2->47 49 Yara detected AgentTesla 2->49 51 5 other signatures 2->51 6 draft BL.exe 3 2->6         started        10 NXLun.exe 2 2->10         started        12 NXLun.exe 1 2->12         started        process3 file4 25 C:\Users\user\AppData\...\draft BL.exe.log, ASCII 6->25 dropped 53 Writes to foreign memory regions 6->53 55 Allocates memory in foreign processes 6->55 57 Injects a PE file into a foreign processes 6->57 14 RegSvcs.exe 2 4 6->14         started        19 RegSvcs.exe 6->19         started        21 conhost.exe 10->21         started        23 conhost.exe 12->23         started        signatures5 process6 dnsIp7 31 us2.smtp.mailhostbox.com 208.91.199.224, 49827, 587 PUBLIC-DOMAIN-REGISTRYUS United States 14->31 27 C:\Users\user\AppData\Roaming\...27XLun.exe, PE32 14->27 dropped 29 C:\Windows\System32\drivers\etc\hosts, ASCII 14->29 dropped 33 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 14->33 35 Tries to steal Mail credentials (via file / registry access) 14->35 37 Tries to harvest and steal ftp login credentials 14->37 43 3 other signatures 14->43 39 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 19->39 41 Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines) 19->41 file8 signatures9
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/81a02891cf62fb184788fa5fdae98c63c4a896cd504526f768000484b16444f0/
Threat name:
ByteCode-MSIL.Trojan.Taskun
Create hunting rule
Status:
Malicious
First seen:
2021-11-02 06:37:36 UTC
AV detection:
7 of 44 (15.91%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=qgqcreopml5rqr4i7jp5v2mmmpckrfwnkbcsn53iaacijmleitya._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
Similar samples:
2058a16dae0afbc5a8be6091073e6e56f95469be12da77ef04f40fdd9c522b75
AgentTesla
4615d1a1b95cb1cb6203191adbc9c5d13faa801dc17393efb649282269a4c828
AgentTesla
512e2ffb2c0fea781781ac3c04ce0ec6395add6cdb80cb4a6fb88ded75f0154c
AgentTesla
704c8c0960f492c87928d15659a3e16df0c76591d0abaa83a011c58d4fd98ae2
AgentTesla
946d932af402b5296889f82c65c54a96617ac2bdc5f787ab81e2ab7077f418c9
AgentTesla
becde837b9887243bd5d1a46c2471375e67b983002da5c4d8b14e6fef4a26b60
AgentTesla
cf99f114e53071f1814e884842256d161994d2ac2a195773afa68ec06c8a50d7
AgentTesla
+ 12'485 additional samples on MalwareBazaar
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
family:agenttesla collection keylogger persistence spyware stealer trojan
Link:
https://tria.ge/reports/211102-hwjd3sbhe9/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
outlook_office_path
outlook_win_path
Suspicious use of SetThreadContext
Accesses Microsoft Outlook profiles
Adds Run key to start application
Drops file in Drivers directory
AgentTesla Payload
AgentTesla
Unpacked files
SH256 hash:
daf917d3330a2aa1b84fe2ee293fc922f25a5f9820585dd8e16a14ec470ea827
MD5 hash:
878d69559a87b84b3a3fb494874c243e
SHA1 hash:
daf2b0f010e6f0d3a354e5d1f0cbcde4e8689a14
Link:
https://www.unpac.me/results/53606597-1221-411e-9643-a955602acb6e/
SH256 hash:
0493349cafab2ab9ab35d2f07f7616365b70c1424a66eff598aaaea4e749c0ca
MD5 hash:
61485618732e533ccf60e3b86c3f9b5f
SHA1 hash:
ed41ce56e134d1ec47fe44be80ac7a1e0b1ce5ba
Link:
https://www.unpac.me/results/53606597-1221-411e-9643-a955602acb6e/
SH256 hash:
7ec7c47de5927351c7035f8657a2dd91c42fd6ed6e4da309e34b87ef0b0ba785
MD5 hash:
171a2669225911b41301096cd9dcf19f
SHA1 hash:
dc25f1f69faec5174e489a0d1a18cf14cf7fd1b5
Link:
https://www.unpac.me/results/53606597-1221-411e-9643-a955602acb6e/
SH256 hash:
9ecdf41d4292eb21af7c4eee8cf2c5ce6ce351d63ace861043dd073bc2ce9e71
MD5 hash:
61ff17ac01e51c49f678ebc74ecf7610
SHA1 hash:
8850dbd2709bf7050274378e102373a4173b822c
Link:
https://www.unpac.me/results/53606597-1221-411e-9643-a955602acb6e/
SH256 hash:
81a02891cf62fb184788fa5fdae98c63c4a896cd504526f768000484b16444f0
MD5 hash:
45e17622bc006a4caf32d14dc4cbd625
SHA1 hash:
81bcef8ee88b77a41fd31e6f81ff90854617e979
Link:
https://www.unpac.me/results/53606597-1221-411e-9643-a955602acb6e/
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/81a02891cf62fb184788fa5fdae98c63c4a896cd504526f768000484b16444f0

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:pe_imphash
Create hunting rule
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

zip 5bc13dffaccd6b8722e6843774c66785159d1aec5cc5497f95fa38332dbb3489

AgentTesla

Executable exe 81a02891cf62fb184788fa5fdae98c63c4a896cd504526f768000484b16444f0

(this sample)

  
Delivery method
Other
  
Dropped by
SHA256 5bc13dffaccd6b8722e6843774c66785159d1aec5cc5497f95fa38332dbb3489
Cape
Cape
https://www.capesandbox.com/analysis/201300/

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