MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 37de89b7801956fa962ead2493e56286ee2a91cb79ad8a40a933b01f25530c39. 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 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 37de89b7801956fa962ead2493e56286ee2a91cb79ad8a40a933b01f25530c39
SHA3-384 hash: 6b396028a734c5dc12713b8518ca294f591625e9eb714f68be97c2ade4448eafe1de659b96d402e5357cafd10e876b9a
SHA1 hash: 91a77592b32a6d3d063da004ac3c8b97b1666e7c
MD5 hash: cfcbf3d8864a73f5c4f788b2ea4e5e9a
humanhash: twelve-oklahoma-magnesium-lamp
File name:cfcbf3d8864a73f5c4f788b2ea4e5e9a.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:481'280 bytes
First seen:2022-06-13 07:07:13 UTC
Last seen:2022-06-13 11:43:13 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 12288:7TfBafvI0vilB5lmPz8Rrb5f6tCx52scsTn:7T4fFviZcQBSCx52/s
Threatray 4'030 similar samples on MalwareBazaar
TLSH T158A4121B13F98327EE9E03799031210A07B1A61D5673EB562F4674FB571BF8281289B3
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) (4505/5/1)
2.0% (.EXE) Win16/32 Executable Delphi generic (2072/23)
File icon (PE):PE icon
dhash icon 0022a3a2b8a6e610 (16 x Formbook, 7 x AgentTesla, 6 x Loki)
Reporter abuse_ch
Tags:AgentTesla exe

Intelligence

File Origin
# of uploads :
3
# of downloads :
252
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
agenttesla
Create hunting rule
ID:
1
File name:
cfcbf3d8864a73f5c4f788b2ea4e5e9a.exe
Verdict:
Malicious activity
Analysis date:
2022-06-13 07:09:45 UTC
Tags:
opendir loader agenttesla
Link:
https://app.any.run/tasks/1f3e692a-23c9-4052-bf59-fffd492dd9b6

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
WarzoneRAT
Create hunting rule
Link:
https://www.capesandbox.com/analysis/279240/
Detection(s):
SecuriteInfo.com.W32.AIDetectNet.01.7181.23248.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Unauthorized injection to a recently created process
Creating a file
Using the Windows Management Instrumentation requests
Launching a process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
packed
Link:
https://www.filescan.io/uploads/62a6e26573b91c38f689a921/reports/91500662-dabc-42f1-9988-6331a475d716/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.
Malware family:
Agent Tesla
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/600e121d-9346-4431-ae80-df36d4e86fab
Result
Threat name:
AgentTesla, AveMaria
Create hunting rule
Detection:
malicious
Classification:
phis.troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1011811
Signature
.NET source code contains potential unpacker
.NET source code contains very large array initializations
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Contains functionality to hide user accounts
Hides that the sample has been downloaded from the Internet (zone.identifier)
Increases the number of concurrent connection per server for Internet Explorer
Injects a PE file into a foreign processes
Installs a global keyboard hook
Machine Learning detection for dropped file
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for dropped 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)
Snort IDS alert for network traffic
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 steal Mail credentials (via file / registry access)
Yara detected AgentTesla
Yara detected AntiVM3
Yara detected AveMaria stealer
Yara detected Costura Assembly Loader
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 644308 Sample: cKMK5mJoe8.exe Startdate: 13/06/2022 Architecture: WINDOWS Score: 100 62 Snort IDS alert for network traffic 2->62 64 Malicious sample detected (through community Yara rule) 2->64 66 Antivirus detection for URL or domain 2->66 68 10 other signatures 2->68 9 cKMK5mJoe8.exe 3 2->9         started        13 Mhkii.exe 2->13         started        15 Mhkii.exe 2->15         started        process3 file4 50 C:\Users\user\AppData\...\cKMK5mJoe8.exe.log, ASCII 9->50 dropped 80 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 9->80 82 Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines) 9->82 84 Injects a PE file into a foreign processes 9->84 17 cKMK5mJoe8.exe 15 4 9->17         started        86 Multi AV Scanner detection for dropped file 13->86 88 Machine Learning detection for dropped file 13->88 22 powershell.exe 13->22         started        24 powershell.exe 15->24         started        signatures5 process6 dnsIp7 54 smtp.yandex.ru 77.88.21.158, 49771, 587 YANDEXRU Russian Federation 17->54 56 srv5-bsb.gns.com.br 189.73.193.5, 49767, 80 BrasilTelecomSA-FilialDistritoFederalBR Brazil 17->56 58 2 other IPs or domains 17->58 48 C:\Users\user\AppData\Local\Temp\donexx.exe, PE32 17->48 dropped 70 Tries to steal Mail credentials (via file / registry access) 17->70 72 Tries to harvest and steal browser information (history, passwords, etc) 17->72 74 Installs a global keyboard hook 17->74 26 donexx.exe 1 4 17->26         started        30 conhost.exe 22->30         started        32 conhost.exe 24->32         started        file8 signatures9 process10 file11 52 C:\Users\user\AppData\Roaming\...\Mhkii.exe, PE32 26->52 dropped 90 Multi AV Scanner detection for dropped file 26->90 92 Machine Learning detection for dropped file 26->92 34 MSBuild.exe 2 26->34         started        38 cmd.exe 1 26->38         started        40 powershell.exe 15 26->40         started        signatures12 process13 dnsIp14 60 45.162.228.171, 26112 QNAXLTDABR Brazil 34->60 76 Increases the number of concurrent connection per server for Internet Explorer 34->76 78 Hides that the sample has been downloaded from the Internet (zone.identifier) 34->78 42 conhost.exe 38->42         started        44 timeout.exe 1 38->44         started        46 conhost.exe 40->46         started        signatures15 process16
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/37de89b7801956fa962ead2493e56286ee2a91cb79ad8a40a933b01f25530c39/
Threat name:
ByteCode-MSIL.Hacktool.Mimikatz
Create hunting rule
Status:
Malicious
First seen:
2022-06-13 04:37:51 UTC
File Type:
PE (.Net Exe)
Extracted files:
8
AV detection:
19 of 26 (73.08%)
Threat level:
  1/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=g7pitn4adflpvfrovusjhzlcq3xcveolpgwyuqfjgoyb6jktbq4q._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
avemaria
Create hunting rule
masslogger
Create hunting rule
Similar samples:
323dc15959c4fb49f274d9024959d3cf256eb07ac2fcc0457f3cfe87277f5fad
AgentTesla
a33967b25289fff0c0978686fa27ae823e3ac86684d52afb1a1ad1b732045249
AgentTesla
a524b17edc79f1cacd57f9a07becfd24df6d0ef893d11620cb3c300c86c327ed
AgentTesla
b71ac80addac74e89b71f6893d989d7233d8174b8836138a3292cc1409ae8e58
AgentTesla
d046a74bd0d56c05cffb8d204b3785869465e5583460e95e494c400ec177da41
AgentTesla
ef1ac3f12332198e1ef6f01698658258289a63e08ff17b1ddba89e229b8f19b7
AgentTesla
fb9d0187ef58360b6877dc38f0509030b2e7d57d060deae2bb6e3233dda8f47d
AgentTesla
+ 4'020 additional samples on MalwareBazaar
Result
Malware family:
warzonerat
Create hunting rule
Score:
  10/10
Tags:
family:agenttesla family:warzonerat collection infostealer keylogger persistence rat spyware stealer trojan
Link:
https://tria.ge/reports/220613-hx8qcsedej/
Behaviour
Delays execution with timeout.exe
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
outlook_office_path
outlook_win_path
Enumerates physical storage devices
Suspicious use of SetThreadContext
Accesses Microsoft Outlook profiles
Adds Run key to start application
Checks computer location settings
Loads dropped DLL
Reads user/profile data of local email clients
Reads user/profile data of web browsers
Downloads MZ/PE file
Executes dropped EXE
AgentTesla
WarzoneRat, AveMaria
Malware Config
C2 Extraction:
45.162.228.171:26112
Unpacked files
SH256 hash:
dec15271d422cf3b82c0a94cf147312bb5a4a4f262da4b698ffe7e6bdaf18053
MD5 hash:
79c5c39e29ebe233cd13a50987e64609
SHA1 hash:
0560314716e6519158009159c017d2b52116608e
Link:
https://www.unpac.me/results/b0329c48-f080-400b-86b8-64556526102b/
SH256 hash:
9ef6d125b5ea6c93794d89c25a541bb706fb126afbfd0a0a779ef52642e8fbee
MD5 hash:
ba63df8ef214becbcea90213008798ca
SHA1 hash:
09407feb5b5f7c64b6bcbc8764891cc7319e7c0f
Link:
https://www.unpac.me/results/b0329c48-f080-400b-86b8-64556526102b/
SH256 hash:
5dbd76d4545365cde80ea533ecb6ccd951f1854b8cf344a53f82bd7a5ce64134
MD5 hash:
e0aa4758360bc38fec301453a0c1434c
SHA1 hash:
3c4c83ba2fe9b7d5dd45f5b46690ac37d23cf234
Link:
https://www.unpac.me/results/b0329c48-f080-400b-86b8-64556526102b/
SH256 hash:
033175d3268c99ba9d9aa7580e2d7ca14a19c424f690d225db6cf196bdcf2327
MD5 hash:
b7bc8b9651e30786b3ebc362b0411334
SHA1 hash:
4d3ecffb6de6f06164fde0936bfa957b52bd8dd5
Link:
https://www.unpac.me/results/b0329c48-f080-400b-86b8-64556526102b/
SH256 hash:
37de89b7801956fa962ead2493e56286ee2a91cb79ad8a40a933b01f25530c39
MD5 hash:
cfcbf3d8864a73f5c4f788b2ea4e5e9a
SHA1 hash:
91a77592b32a6d3d063da004ac3c8b97b1666e7c
Link:
https://www.unpac.me/results/b0329c48-f080-400b-86b8-64556526102b/
Malware family:
AgentTesla.v3
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/37de89b78019/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
0.85
Link:
https://yomi.yoroi.company/submissions/37de89b7801956fa962ead2493e56286ee2a91cb79ad8a40a933b01f25530c39

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.

Web download

AgentTesla

Executable exe 37de89b7801956fa962ead2493e56286ee2a91cb79ad8a40a933b01f25530c39

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/2236001/
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/279240/

Comments