MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a4f3e5c942d92b74d1f1eae54316b75ce26c636ee13b9503fe588b8c4627c581. 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: a4f3e5c942d92b74d1f1eae54316b75ce26c636ee13b9503fe588b8c4627c581
SHA3-384 hash: 598c151ff80c6ed3942646ca1580210e49f75b957710902b40b908b3fe910452983b9affe14721ae57a6de0d7fa39c12
SHA1 hash: 6d11ad0bc678dbd7300711ade6c0370328a2cfdf
MD5 hash: 736fb9934d5a965d1f3624ed1adc06ae
humanhash: salami-monkey-south-mars
File name:Purchase Order.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:925'696 bytes
First seen:2022-01-25 10:17:29 UTC
Last seen:2022-01-25 14:06:41 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'744 x AgentTesla, 19'610 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 12288:PHe6yJKX6kBRdiFQci7gZH9w7Qd2JqLj98uEC2ovtegW5DaExeIabsECiIRm28Bk:P+077e6U6Kj9875vDaEIBzlqZ8B
Threatray 14'394 similar samples on MalwareBazaar
TLSH T15915E0C0B5A75ABBC73A26F903B2A44887F02545A28DD1E5EECF1CDA45CCFCA5587813
Reporter GovCERT_CH
Tags:AgentTesla exe

Intelligence

File Origin
# of uploads :
3
# of downloads :
156
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Purchase Order.exe
Verdict:
Malicious activity
Analysis date:
2022-01-25 10:20:51 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/521e02b7-f40f-4526-8440-475082906546

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/222344/
Detection(s):
SecuriteInfo.com.Suspicious.Win32.Save.a.7547.12655.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
DNS request
Сreating synchronization primitives
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 process with a hidden window
Creating a file in the %temp% directory
Launching a process
Creating a file
Using the Windows Management Instrumentation requests
Enabling autorun by creating a file
Unauthorized injection to a system process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
obfuscated packed
Link:
https://www.filescan.io/uploads/61efce62f81da814afa32704/reports/981ec75b-e929-4818-aa9d-cebd9fdef057/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/2fa31187-dacd-4616-971a-6746c8c41c82
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.adwa.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/926953
Signature
.NET source code contains very large array initializations
Adds a directory exclusion to Windows Defender
Allocates memory in foreign processes
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
Machine Learning detection for sample
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: Bad Opsec Defaults Sacrificial Processes With Improper Arguments
Sigma detected: Powershell Defender Exclusion
Sigma detected: Suspicius Add Task From User AppData Temp
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Uses schtasks.exe or at.exe to add and modify task schedules
Writes to foreign memory regions
Yara detected AgentTesla
Yara detected AntiVM3
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 559429 Sample: Purchase Order.exe Startdate: 25/01/2022 Architecture: WINDOWS Score: 100 53 Found malware configuration 2->53 55 Antivirus detection for dropped file 2->55 57 Antivirus / Scanner detection for submitted sample 2->57 59 14 other signatures 2->59 7 Purchase Order.exe 7 2->7         started        11 kprUEGC.exe 2 2->11         started        13 kprUEGC.exe 1 2->13         started        process3 file4 33 C:\Users\user\AppData\...\YdTGDLxGgxYO.exe, PE32 7->33 dropped 35 C:\Users\...\YdTGDLxGgxYO.exe:Zone.Identifier, ASCII 7->35 dropped 37 C:\Users\user\AppData\Local\...\tmpB9D7.tmp, XML 7->37 dropped 39 C:\Users\user\...\Purchase Order.exe.log, ASCII 7->39 dropped 61 Writes to foreign memory regions 7->61 63 Allocates memory in foreign processes 7->63 65 Adds a directory exclusion to Windows Defender 7->65 67 Injects a PE file into a foreign processes 7->67 15 RegSvcs.exe 2 4 7->15         started        19 RegSvcs.exe 7->19         started        21 powershell.exe 22 7->21         started        23 schtasks.exe 1 7->23         started        25 conhost.exe 11->25         started        27 conhost.exe 13->27         started        signatures5 process6 file7 41 C:\Users\user\AppData\Roaming\...\kprUEGC.exe, PE32 15->41 dropped 43 C:\Windows\System32\drivers\etc\hosts, ASCII 15->43 dropped 45 Modifies the hosts file 15->45 47 Hides that the sample has been downloaded from the Internet (zone.identifier) 15->47 49 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 19->49 51 Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines) 19->51 29 conhost.exe 21->29         started        31 conhost.exe 23->31         started        signatures8 process9
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/a4f3e5c942d92b74d1f1eae54316b75ce26c636ee13b9503fe588b8c4627c581/
Threat name:
ByteCode-MSIL.Trojan.KryptikAGen
Create hunting rule
Status:
Malicious
First seen:
2022-01-25 10:12:52 UTC
File Type:
PE (.Net Exe)
Extracted files:
13
AV detection:
21 of 28 (75.00%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=utz6lskc3evxjupr5lsugfvxltrgyy3o4e5zka76lcfyyrrhywaq._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
Similar samples:
037ba6efa8e5042c790ae814e4171091f53bf93271e28fcb56c8c2054379b77c
AgentTesla
05c744b20df523ca0ebd41c0b9f43474fdf52754dd65b87bd5c0cf32cc2e8b88
AgentTesla
077a49fa6f765eb57a0d3d10f72dcb11b63e6f53ea64945b0d6bb30046899bb5
AgentTesla
2236d77769e9548b1999f5b34f0be7dd97785796f9f1ca7ee52657455553c916
AgentTesla
6ecabff170de8fd8dfe88313392add2c4a468177a8c37eed83b58fe77d8c882e
AgentTesla
91069bfb988e568d03cba95913d32fd41d2c1548376fb41148b1a34b2b045b47
AgentTesla
9973c00cf203198a16d3d897fa85d46896f04ea9d58b23917eaea32a3de4d5e4
AgentTesla
+ 14'384 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/220125-mby19adhbq/
Behaviour
Creates scheduled task(s)
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
Drops file in Drivers directory
AgentTesla Payload
AgentTesla
Unpacked files
SH256 hash:
58dc64e585359aa196907f769ef48b3da882c7d8065a66559c73c3c54d6df743
MD5 hash:
5409b78aadf5153b36833f1084dd34f5
SHA1 hash:
f5b46e03b89ee50ce6eb8e0aaf30d9a500540bc0
Link:
https://www.unpac.me/results/20ecd07c-3972-4f01-a55c-039bc66bbc1a/
SH256 hash:
771c633f0d678aa2daaf5f21061c428618c63fe6b448c30386c82023816bc1fb
MD5 hash:
75b05fb415c1a760cc1967cbc413b531
SHA1 hash:
7041348e9bfedeb8ac878401cacd2d9598759244
Link:
https://www.unpac.me/results/20ecd07c-3972-4f01-a55c-039bc66bbc1a/
SH256 hash:
8325a5cf7942bb46ac528c836b79180c05d71a4e7de108693d303d56bcc5def1
MD5 hash:
efdf2c54a74297c24bc73285376c432b
SHA1 hash:
564f25afb6c5599cdcd5fafaff32c1475e581af4
Link:
https://www.unpac.me/results/20ecd07c-3972-4f01-a55c-039bc66bbc1a/
SH256 hash:
a4f3e5c942d92b74d1f1eae54316b75ce26c636ee13b9503fe588b8c4627c581
MD5 hash:
736fb9934d5a965d1f3624ed1adc06ae
SHA1 hash:
6d11ad0bc678dbd7300711ade6c0370328a2cfdf
Link:
https://www.unpac.me/results/20ecd07c-3972-4f01-a55c-039bc66bbc1a/
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/a4f3e5c942d92b74d1f1eae54316b75ce26c636ee13b9503fe588b8c4627c581

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 a4f3e5c942d92b74d1f1eae54316b75ce26c636ee13b9503fe588b8c4627c581

(this sample)

  
Dropped by
agenttesla
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/222344/

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