MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b57506921f2720895173741a012333b7f8b981a58dfa16493088371371b815c3. 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 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b57506921f2720895173741a012333b7f8b981a58dfa16493088371371b815c3
SHA3-384 hash: 0c9af9b13dc4866e7bc59435d9f5f7550529308e6e57c6125fb117715871a6f680d5bd79c6e405f63c8632080fc2b9fa
SHA1 hash: 1068227546e0b7f016028033b34c3ffa5b3eb38e
MD5 hash: 821f3780a936cbec78ef0a92a6abe240
humanhash: sierra-vegan-fourteen-march
File name:purchase_order T&B19-20PO128.pdf.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:675'328 bytes
First seen:2023-09-18 05:35:17 UTC
Last seen:2023-09-18 06:43:53 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'462 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 12288:93GBMjCfftXHRuznqQ+AORIKMLyUsiBpp8:9TkXEepRI7Lyn
Threatray 5'648 similar samples on MalwareBazaar
TLSH T13AE48E1171EA1156E3B2B7740FD4E8BE83A6FD63560BB63A39C13E4B7279D028A01375
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% (.ICL) Windows Icons Library (generic) (2059/9)
File icon (PE):PE icon
dhash icon 0000000000000000 (872 x AgentTesla, 496 x Formbook, 296 x RedLineStealer)
Reporter cocaman
Tags:AgentTesla exe

Intelligence

File Origin
# of uploads :
2
# of downloads :
290
Origin country :
CH CH
Vendor Threat Intelligence
Detection:
AgentTesla
Create hunting rule
Link:
https://www.capesandbox.com/analysis/449243/
Detection(s):
SecuriteInfo.com.Win32.PWSX-gen.22630.2144.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Creating a file in the %AppData% directory
Creating a file in the %temp% directory
Сreating synchronization primitives
Launching a process
Creating a process with a hidden window
Creating a file
Using the Windows Management Instrumentation requests
Enabling autorun by creating a file
Unauthorized injection to a system process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
lolbin masquerade packed replace
Link:
https://www.filescan.io/uploads/6507e1c5988a26b6d96e2183/reports/497fdef8-000b-4210-b832-0acc85893c2b/overview
Verdict:
Malicious
Labled as:
Malware
Link:
https://www.hybrid-analysis.com/sample/b57506921f2720895173741a012333b7f8b981a58dfa16493088371371b815c3
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.
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/70dbb21e-672a-4c0f-9b61-fe91ad8adf72
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1309771
Signature
.NET source code contains potential unpacker
.NET source code contains very large strings
Contains functionality to log keystrokes (.Net Source)
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
May check the online IP address of the machine
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines)
Sample uses string decryption to hide its real strings
Sigma detected: Scheduled temp file as task from temp location
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 harvest and steal Putty / WinSCP information (sessions, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Uses an obfuscated file name to hide its real file extension (double extension)
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: 1309771 Sample: purchase_order_T&B19-20PO12... Startdate: 18/09/2023 Architecture: WINDOWS Score: 100 50 Snort IDS alert for network traffic 2->50 52 Found malware configuration 2->52 54 Sigma detected: Scheduled temp file as task from temp location 2->54 56 10 other signatures 2->56 7 purchase_order_T&B19-20PO128.pdf.exe 6 2->7         started        11 nuGVaTgPHDiwX.exe 5 2->11         started        13 vlflvDv.exe 2->13         started        15 vlflvDv.exe 2->15         started        process3 file4 38 C:\Users\user\AppData\...\nuGVaTgPHDiwX.exe, PE32 7->38 dropped 40 C:\Users\user\AppData\Local\...\tmp73AC.tmp, XML 7->40 dropped 70 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 7->70 72 Uses schtasks.exe or at.exe to add and modify task schedules 7->72 74 Writes to foreign memory regions 7->74 17 RegSvcs.exe 17 4 7->17         started        22 schtasks.exe 1 7->22         started        76 Multi AV Scanner detection for dropped file 11->76 78 Machine Learning detection for dropped file 11->78 80 Injects a PE file into a foreign processes 11->80 24 RegSvcs.exe 3 11->24         started        26 schtasks.exe 1 11->26         started        28 conhost.exe 13->28         started        30 conhost.exe 15->30         started        signatures5 process6 dnsIp7 42 mail.unitechautomations.com 192.185.129.60, 49716, 49718, 587 UNIFIEDLAYER-AS-1US United States 17->42 44 api4.ipify.org 104.237.62.212, 443, 49715, 49717 WEBNXUS United States 17->44 46 api.ipify.org 17->46 36 C:\Users\user\AppData\Roaming\...\vlflvDv.exe, PE32 17->36 dropped 58 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 17->58 60 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 17->60 62 May check the online IP address of the machine 17->62 32 conhost.exe 22->32         started        48 api.ipify.org 24->48 64 Tries to steal Mail credentials (via file / registry access) 24->64 66 Tries to harvest and steal browser information (history, passwords, etc) 24->66 68 Hides that the sample has been downloaded from the Internet (zone.identifier) 24->68 34 conhost.exe 26->34         started        file8 signatures9 process10
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/b57506921f2720895173741a012333b7f8b981a58dfa16493088371371b815c3/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2023-09-18 02:50:39 UTC
File Type:
PE (.Net Exe)
Extracted files:
26
AV detection:
18 of 36 (50.00%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=wv2qneq7e4qisultoqnaciztw74ltanfrx5bmsjqra3rg4nycxbq._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
Similar samples:
3807b05845559f4ea717756c87357b8cfd9b9909a4d3f738f35ddc2bed88c35e
AgentTesla
527667bc0981c49c8b4240170196700630a848bc7f3890ec6733df750d201d9b
AgentTesla
59f17dd7a3958d07d2c273cb6db2e2cbedea74b1a72e105ae31c01e4bea41e69
AgentTesla
5d4862723d30554cea6f12055b8c648b5d5b0ce2c94fd7ef7b86224a38fc75d5
AgentTesla
a99950332da46a51e1aaba6204df22a2c94926d9ac2691ac63cdb3cc6f9f3098
AgentTesla
b51c0c907444b390504c65e4d688a265f1698e2bcfc8a214ead20ef62f5d685a
AgentTesla
cd96e558ce3e2c43977276ade9939859f36d913ee660e2fbd32733585fc9f85e
AgentTesla
d3bb0955fba70ac4492cad770933239688c71f792e38cb51e6ffee38aeae54d9
AgentTesla
d8ba3d84e3d6655458d8c886913e71fbb9e0b72457e6a091f9055ef78e804820
AgentTesla
+ 5'638 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/230918-gakvcafb6x/
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
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
Looks up external IP address via web service
Checks computer location settings
AgentTesla
Unpacked files
SH256 hash:
9274b7e74064d3d349c90330cbb566ed7baa87c8d3c66d5ab154ff2bdcf8b389
MD5 hash:
e0eb635e58aecd9176906b6e3dd4b9e4
SHA1 hash:
7bffcfe2edc3142d12fa370b4241b6b7d6d457d2
Link:
https://www.unpac.me/results/c8bdc1b4-b0d9-4adf-9c1b-bbcca1e7c488/
SH256 hash:
fc2a512233bc2f0d30725f10f7ce46a5acf67971692ca61d8b4c2c3ed6a69fec
MD5 hash:
50cc30f54e48f35e01d634331a2b24f2
SHA1 hash:
464a467739475e1163fd485e565356dfd7dcf88b
Detections:
AgentTesla
Create hunting rule
Link:
https://www.unpac.me/results/c8bdc1b4-b0d9-4adf-9c1b-bbcca1e7c488/
Parent samples :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 hash:
c0ac098f9356627e9ebfa01c9fb6609dff473a809a16fa793bd0671cec4753fd
MD5 hash:
dcd11f1fa3e3adbf2fbed3c1d0f75f4c
SHA1 hash:
45a9cebb189a5d4715f3521958d51f3578a027d4
Link:
https://www.unpac.me/results/c8bdc1b4-b0d9-4adf-9c1b-bbcca1e7c488/
SH256 hash:
b57506921f2720895173741a012333b7f8b981a58dfa16493088371371b815c3
MD5 hash:
821f3780a936cbec78ef0a92a6abe240
SHA1 hash:
1068227546e0b7f016028033b34c3ffa5b3eb38e
Link:
https://www.unpac.me/results/c8bdc1b4-b0d9-4adf-9c1b-bbcca1e7c488/
Malware family:
AgentTesla.v4
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/b57506921f27/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
AgentTesla
Score:
0.90
Link:
https://yomi.yoroi.company/submissions/b57506921f2720895173741a012333b7f8b981a58dfa16493088371371b815c3

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:NET
Create hunting rule
Author:malware-lu
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 6a6ca8111f066f7c4110c123af309080ceead65edc3e473e98ef4ec4020ab91e

AgentTesla

Executable exe b57506921f2720895173741a012333b7f8b981a58dfa16493088371371b815c3

(this sample)

  
Delivery method
Other
  
Dropped by
SHA256 6a6ca8111f066f7c4110c123af309080ceead65edc3e473e98ef4ec4020ab91e
Cape
Cape
https://www.capesandbox.com/analysis/449243/
  
Dropped by
MD5 df0ddc8aca2c59e3571553fd29adc5f5

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