MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a8db5691e41b1e37a1356ab50d5bde85050df5708a966b170b5062aed05f9366. 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: 13


Intelligence 13 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a8db5691e41b1e37a1356ab50d5bde85050df5708a966b170b5062aed05f9366
SHA3-384 hash: d273698348f1a4e18decf0f0e5a885e458d719252c910aba5846092da859879db5dd86f77cb05a7fa69f97095e8327bc
SHA1 hash: c0babbdfb099781e12df0729f62d780b82b7fee7
MD5 hash: 200574a76597ef6aa0667822f2948543
humanhash: illinois-fish-victor-victor
File name:UYAzSF0.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:999'936 bytes
First seen:2022-02-19 11:51:52 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'666 x AgentTesla, 19'479 x Formbook, 12'209 x SnakeKeylogger)
ssdeep 12288:P5Xq6m5VkowODchZRz6ygM6FsGCwieJ4beC1+5YMkEEPaqof/R0gM4G6:upy8FsGCwk1CkEEPwft9
Threatray 15'053 similar samples on MalwareBazaar
TLSH T1F9259D65B8EA505DE77D96F50BF4BAEE8E45B723090BB2B523A136C5C2FE8005C49370
File icon (PE):PE icon
dhash icon 00e8d0d0e0e8d400 (5 x AgentTesla, 1 x NanoCore, 1 x njrat)
Reporter cocaman
Tags:AgentTesla exe

Intelligence

File Origin
# of uploads :
1
# of downloads :
327
Origin country :
n/a
Vendor Threat Intelligence
Detection:
AgentTeslaV3
Create hunting rule
Link:
https://www.capesandbox.com/analysis/242658/
Detection(s):
SecuriteInfo.com.Trojan.Siggen16.57439.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Сreating synchronization primitives
Launching a process
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 process from a recently created file
Creating a file in the %temp% directory
Unauthorized injection to a recently created process
Creating a file
Enabling autorun by creating a file
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
black obfuscated packed
Link:
https://www.filescan.io/uploads/6210d9e6a2660f3bb905af0f/reports/dadf8838-9395-4367-8b4d-0813ff8379f8/overview
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/a2cfa7f8-2326-47f0-9aef-c2d598f3e09a
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.adwa.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/942604
Signature
.NET source code contains potential unpacker
.NET source code contains very large array initializations
.NET source code contains very large strings
Adds a directory exclusion to Windows Defender
Contains functionality to register a low level keyboard hook
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
Injects a PE file into a foreign processes
Installs a global keyboard hook
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Modifies the hosts file
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)
Sigma detected: Powershell Defender Exclusion
Sigma detected: Suspicius Add Task From User AppData Temp
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)
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected AgentTesla
Yara detected AntiVM3
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 575082 Sample: UYAzSF0.exe Startdate: 19/02/2022 Architecture: WINDOWS Score: 100 68 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->68 70 Found malware configuration 2->70 72 Malicious sample detected (through community Yara rule) 2->72 74 12 other signatures 2->74 7 UYAzSF0.exe 7 2->7         started        11 kprUEGC.exe 2->11         started        13 kprUEGC.exe 2->13         started        process3 file4 48 C:\Users\user\AppData\...\QPpgBjlvPq.exe, PE32 7->48 dropped 50 C:\Users\...\QPpgBjlvPq.exe:Zone.Identifier, ASCII 7->50 dropped 52 C:\Users\user\AppData\Local\...\tmp5FF3.tmp, XML 7->52 dropped 54 C:\Users\user\AppData\...\UYAzSF0.exe.log, ASCII 7->54 dropped 76 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 7->76 78 Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines) 7->78 80 Contains functionality to register a low level keyboard hook 7->80 88 2 other signatures 7->88 15 UYAzSF0.exe 2 5 7->15         started        20 powershell.exe 24 7->20         started        22 powershell.exe 25 7->22         started        24 schtasks.exe 1 7->24         started        82 Multi AV Scanner detection for dropped file 11->82 84 Machine Learning detection for dropped file 11->84 86 Injects a PE file into a foreign processes 11->86 26 schtasks.exe 11->26         started        28 kprUEGC.exe 11->28         started        30 schtasks.exe 13->30         started        signatures5 process6 dnsIp7 56 melcme.com 107.189.3.232, 49835, 587 PONYNETUS United States 15->56 58 mail.melcme.com 15->58 42 C:\Users\user\AppData\Roaming\...\kprUEGC.exe, PE32 15->42 dropped 44 C:\Windows\System32\drivers\etc\hosts, ASCII 15->44 dropped 46 C:\Users\user\...\kprUEGC.exe:Zone.Identifier, ASCII 15->46 dropped 60 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 15->60 62 Tries to steal Mail credentials (via file / registry access) 15->62 64 Tries to harvest and steal ftp login credentials 15->64 66 4 other signatures 15->66 32 conhost.exe 20->32         started        34 conhost.exe 22->34         started        36 conhost.exe 24->36         started        38 conhost.exe 26->38         started        40 conhost.exe 30->40         started        file8 signatures9 process10
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/a8db5691e41b1e37a1356ab50d5bde85050df5708a966b170b5062aed05f9366/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2022-02-17 13:03:33 UTC
File Type:
PE (.Net Exe)
Extracted files:
22
AV detection:
22 of 27 (81.48%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=vdnvnepedmpdpijvnk2q2w66qucq35lqrklgwfylkbrk5uc7snta._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
Similar samples:
2b22180c6f96d4f5bf5135c297547c49564afc7e4804a516776dba19e55fbe81
AgentTesla
36dabdaa3e32ea2722834a97e1248f7d82785313eada83cc105931cdb921b897
AgentTesla
5315f5c3d90b0619976b8f8b2eef6e1624b5acb44100f74b9e2733cb4ac97d85
AgentTesla
7236584c288b3b07963fe8afa55b90e1a49ba0149efd642872577f6e28f36fcd
AgentTesla
9a3790d836b29174fdb23a5b7612ddd03c510157b7a55712b00c424b669c24ac
AgentTesla
b3ce2f043e2a86ddba97da6beff28517bcb1ffb4c033429ebccd2b02c20d056b
AgentTesla
dabba0dc8f8921f74b3c85de6a9ad8f9604a880158fb286acba5a67fd3eba406
AgentTesla
fd6615af15cd468d22f07e28c49bef1487c276a3e935b56589bef8157da058e1
AgentTesla
+ 15'043 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/220219-n1qxlsbdgk/
Behaviour
Checks processor information in registry
Creates scheduled task(s)
Modifies data under HKEY_USERS
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
Drops file in Windows directory
Suspicious use of SetThreadContext
Accesses Microsoft Outlook profiles
Adds Run key to start application
Checks computer location settings
Reads data files stored by FTP clients
Reads user/profile data of local email clients
Reads user/profile data of web browsers
Drops file in Drivers directory
AgentTesla Payload
AgentTesla
Unpacked files
SH256 hash:
fb25a9c15a2e8dfdba138997519bd312da019aedbec7f439c1fc736b2b54bf67
MD5 hash:
6a1b63f069b261cfb3941e5aec802aaf
SHA1 hash:
ed2b8362847aea8ebda3951376bac8f6ce15731e
Link:
https://www.unpac.me/results/7aaac899-9811-4544-827f-3435d09f4366/
SH256 hash:
2e004e0abe8a1d00d54edffd1a4dc97bf806de48a8a753549bb2342fd743942a
MD5 hash:
eb66a33df8644bdf7bebea24dd61141e
SHA1 hash:
9cebf540c4bd1625a53dba41a3391edc2d06ee08
Link:
https://www.unpac.me/results/7aaac899-9811-4544-827f-3435d09f4366/
SH256 hash:
fbdd7f8b2e82da2cbcb15d78574b879165d9768702b51cbc4a9bd30b9bfb431b
MD5 hash:
fc0bf1f9ebbaf1bc72f86b79e7ba1c2a
SHA1 hash:
81c43434a6b8d5de04a36f50b2802d155a1ed377
Link:
https://www.unpac.me/results/7aaac899-9811-4544-827f-3435d09f4366/
SH256 hash:
e33254e2ad4d279914a29450f98d1750a9f513fc8ddb853e0dd8346b805faa43
MD5 hash:
b597cce7bfc65e56fa69ebb7f413a33f
SHA1 hash:
7ee40df5ac783432e7c9f7be4f7ed1f286345d58
Link:
https://www.unpac.me/results/7aaac899-9811-4544-827f-3435d09f4366/
SH256 hash:
a8db5691e41b1e37a1356ab50d5bde85050df5708a966b170b5062aed05f9366
MD5 hash:
200574a76597ef6aa0667822f2948543
SHA1 hash:
c0babbdfb099781e12df0729f62d780b82b7fee7
Link:
https://www.unpac.me/results/7aaac899-9811-4544-827f-3435d09f4366/
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/a8db5691e41b1e37a1356ab50d5bde85050df5708a966b170b5062aed05f9366

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

zip bccf9eb26b34a8bdac814fd96c04c8e6cbe7667af69cc8cf61b4268a945fac74

AgentTesla

Executable exe a8db5691e41b1e37a1356ab50d5bde85050df5708a966b170b5062aed05f9366

(this sample)

  
Delivery method
Other
  
Dropped by
SHA256 bccf9eb26b34a8bdac814fd96c04c8e6cbe7667af69cc8cf61b4268a945fac74
Cape
Cape
https://www.capesandbox.com/analysis/242658/

Comments