MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 31a3c2f298b8b235303ecdcbe989f24ddda02a2da072c78cb0c6d0f8e9cd282a. 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 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 31a3c2f298b8b235303ecdcbe989f24ddda02a2da072c78cb0c6d0f8e9cd282a
SHA3-384 hash: 09dc2a95d08b2ce0e4f7fec21ac6ef8834679c1a90556c5bc9ed2394f260e9356c4e4e6f8b130db094383f4ae6d09949
SHA1 hash: d891329d0e3e669fc24c1cb9876c20e4a031d159
MD5 hash: e9229ff99b468546cbc0f850933a01a5
humanhash: angel-sweet-twenty-leopard
File name:OKWZcZcmCvIE09W.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:896'000 bytes
First seen:2022-02-17 07:01:51 UTC
Last seen:2022-02-17 11:04:12 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 24576:WbrlI2UNZwDnrXsmW/gfEbw+jGWKVcNsQKaD/kfh:WXlIrDq6/gfEbw+qnVzNajq
Threatray 14'851 similar samples on MalwareBazaar
TLSH T19815BE5631FF1092C3A2EBF20BD4BCBF866EF177120F763A31816A56C766A409902775
Reporter GovCERT_CH
Tags:AgentTesla exe

Intelligence

File Origin
# of uploads :
3
# of downloads :
224
Origin country :
n/a
Vendor Threat Intelligence
Detection:
AgentTeslaV3
Create hunting rule
Link:
https://www.capesandbox.com/analysis/242170/
Detection(s):
SecuriteInfo.com.Trojan.Siggen16.57439.19453.2979.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a custom TCP request
Сreating synchronization primitives
Launching a process
Creating a file
Using the Windows Management Instrumentation requests
Unauthorized injection to a system process
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
greyware obfuscated packed remote.exe replace.exe
Link:
https://www.filescan.io/uploads/620df305875593a3ccdc1e27/reports/028daa21-138f-460f-b30c-b460ea6ed873/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.
Gathering data
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.adwa.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/941385
Signature
.NET source code contains potential unpacker
.NET source code contains very large array initializations
.NET source code contains very large strings
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
Malicious sample detected (through community Yara rule)
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
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
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: 573861 Sample: OKWZcZcmCvIE09W.exe Startdate: 17/02/2022 Architecture: WINDOWS Score: 100 51 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->51 53 Found malware configuration 2->53 55 Malicious sample detected (through community Yara rule) 2->55 57 8 other signatures 2->57 6 OKWZcZcmCvIE09W.exe 3 2->6         started        10 tKZVPq.exe 2 2->10         started        12 tKZVPq.exe 1 2->12         started        process3 file4 29 C:\Users\user\...\OKWZcZcmCvIE09W.exe.log, ASCII 6->29 dropped 59 Writes to foreign memory regions 6->59 61 Allocates memory in foreign processes 6->61 63 Injects a PE file into a foreign processes 6->63 14 RegSvcs.exe 2 4 6->14         started        19 RegSvcs.exe 6->19         started        21 BackgroundTransferHost.exe 13 6->21         started        27 3 other processes 6->27 23 conhost.exe 10->23         started        25 conhost.exe 12->25         started        signatures5 process6 dnsIp7 35 pas-shipping.com 94.23.214.113, 49823, 587 OVHFR France 14->35 37 mail.pas-shipping.com 14->37 31 C:\Users\user\AppData\Roaming\...\tKZVPq.exe, PE32 14->31 dropped 33 C:\Windows\System32\drivers\etc\hosts, ASCII 14->33 dropped 39 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 14->39 41 Tries to steal Mail credentials (via file / registry access) 14->41 43 Tries to harvest and steal ftp login credentials 14->43 49 3 other signatures 14->49 45 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 19->45 47 Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines) 19->47 file8 signatures9
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/31a3c2f298b8b235303ecdcbe989f24ddda02a2da072c78cb0c6d0f8e9cd282a/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2022-02-17 07:02:12 UTC
File Type:
PE (.Net Exe)
Extracted files:
48
AV detection:
21 of 28 (75.00%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=ggr4f4uyxczdkmb6zxf6tcpsjxo2akrnubzmpdfqy3ipr2onfava._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
Similar samples:
aec1f9abb2e31f3997c315640a78fd758eba3ff255c42ff8682d5e9da92f6649
AgentTesla
afa9c8dfed5854fb55279a38fe6dcf64c0c3f8617107dbc672960d94ccca409c
AgentTesla
c0860eee91e8ac541b4d525a2be062871cadb644dfb358af1f11f93c58f08bad
AgentTesla
d1fea52507fc97ff419f8dd2ea8ecf689fb7c066cf8f18453378e95bf399c3d6
AgentTesla
ea0ea74cfda886ded0a227a990847197c636a38533c4ea211e07c3dc17ab4e96
AgentTesla
f1f9a09a55fb15d3815a84ab374464b9fe698e28b7fae363d4487c9e4136f3c9
AgentTesla
f779ac7255de70de168e1e493c82eba2dd5b459826d2840591b09b32593f1dca
AgentTesla
+ 14'841 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/220217-htsvqsada4/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
outlook_office_path
outlook_win_path
Drops file in Windows directory
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:
e33254e2ad4d279914a29450f98d1750a9f513fc8ddb853e0dd8346b805faa43
MD5 hash:
b597cce7bfc65e56fa69ebb7f413a33f
SHA1 hash:
7ee40df5ac783432e7c9f7be4f7ed1f286345d58
Link:
https://www.unpac.me/results/3e98b9a8-347c-4f37-9ebb-c338f5b7a496/
SH256 hash:
3124ace81e6cef4d2afe57b63c97f3b7dd462a622f641983a661093f69d82dcb
MD5 hash:
9e0512a8d1ae9c281ededa62095d117d
SHA1 hash:
773096a4e13ec15627c24a688912396917afaa4a
Link:
https://www.unpac.me/results/3e98b9a8-347c-4f37-9ebb-c338f5b7a496/
SH256 hash:
d09b1b91166b08beea6842d2faf854c28f467889d93af0ae1530bf14119474d9
MD5 hash:
e382ea03d2d54a463d8406e118b2e4d6
SHA1 hash:
6f20cb4e3348412115ed4044d491dee1c52f87ab
Link:
https://www.unpac.me/results/3e98b9a8-347c-4f37-9ebb-c338f5b7a496/
SH256 hash:
c9096c5b3f1bddb2d52ed826d44c6dbda03069cfc18875b98c3959db47360a81
MD5 hash:
221ee467791fddcddd9ba05ab689b2ef
SHA1 hash:
45a98a7103279edcb4b3ef3397dca4dbbe6fae2a
Link:
https://www.unpac.me/results/3e98b9a8-347c-4f37-9ebb-c338f5b7a496/
SH256 hash:
31a3c2f298b8b235303ecdcbe989f24ddda02a2da072c78cb0c6d0f8e9cd282a
MD5 hash:
e9229ff99b468546cbc0f850933a01a5
SHA1 hash:
d891329d0e3e669fc24c1cb9876c20e4a031d159
Link:
https://www.unpac.me/results/3e98b9a8-347c-4f37-9ebb-c338f5b7a496/
Malware family:
Agent Tesla v3
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/31a3c2f298b8/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/31a3c2f298b8b235303ecdcbe989f24ddda02a2da072c78cb0c6d0f8e9cd282a

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: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 31a3c2f298b8b235303ecdcbe989f24ddda02a2da072c78cb0c6d0f8e9cd282a

(this sample)

  
Dropped by
agenttesla
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/242170/

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