MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 38436d4f78977a760f11f9590f6a9e58be5d1b2a0f1dd7c7841fc525812b5a0e. 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 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 38436d4f78977a760f11f9590f6a9e58be5d1b2a0f1dd7c7841fc525812b5a0e
SHA3-384 hash: 23f2f47868b022fd3aeedc0e0ef9235701eb62aeb0b341b743fd40b6f18f811fd6127c800d584fa1260451e9de80ee1b
SHA1 hash: 603c9d9973f0fe0ace310031a303baf0fd96bc53
MD5 hash: d702ce5e761291981609e57ce31ad41f
humanhash: robert-butter-spaghetti-maryland
File name:Customs_Declaration.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:575'488 bytes
First seen:2021-03-06 11:31:45 UTC
Last seen:2021-03-10 00:41:43 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'747 x AgentTesla, 19'633 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 6144:TksYz56v6O07SY8Rp10L1GjbEa497tO5YhjaxhOPpixi93QuHzRfBNh+NrnBL:osRRp10L1GjoX7AYhjsUA8931zBan
Threatray 3'040 similar samples on MalwareBazaar
TLSH 56C4056316FC21E3EA5807B85127929A1F50BFB5686BDA0C497178FC26BDF9C50D3C82
Reporter GovCERT_CH
Tags:AgentTesla

Intelligence

File Origin
# of uploads :
8
# of downloads :
377
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Customs_Declaration.exe
Verdict:
Malicious activity
Analysis date:
2021-03-06 11:32:23 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/3b985c70-89c7-4e8c-85ee-3dd1a9bd4350

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/122637/
Detection(s):
SecuriteInfo.com.Trojan.GenericKD.36451005.25841.5882.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
DNS request
Sending a UDP request
Creating a file in the %AppData% directory
Creating a file in the %temp% directory
Launching a process
Creating a process with a hidden window
Deleting a recently created file
Creating a file
Using the Windows Management Instrumentation requests
Creating a file in the %AppData% subdirectories
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Enabling autorun by creating a file
Unauthorized injection to a system process
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.
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.adwa.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/630711
Signature
.NET source code contains very large array initializations
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
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: Scheduled temp file as task from temp location
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
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 access)
Uses schtasks.exe or at.exe to add and modify task schedules
Writes to foreign memory regions
Yara detected AgentTesla
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 364327 Sample: Customs_Declaration.exe Startdate: 07/03/2021 Architecture: WINDOWS Score: 100 48 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->48 50 Found malware configuration 2->50 52 Multi AV Scanner detection for dropped file 2->52 54 7 other signatures 2->54 7 Customs_Declaration.exe 6 2->7         started        11 ppptOL.exe 2 2->11         started        13 ppptOL.exe 1 2->13         started        process3 file4 32 C:\Users\user\AppData\...\BuOLQHcAWz.exe, PE32 7->32 dropped 34 C:\Users\user\AppData\Local\...\tmp72CB.tmp, XML 7->34 dropped 36 C:\Users\user\...\Customs_Declaration.exe.log, ASCII 7->36 dropped 56 Writes to foreign memory regions 7->56 58 Injects a PE file into a foreign processes 7->58 15 RegSvcs.exe 2 4 7->15         started        20 schtasks.exe 1 7->20         started        22 conhost.exe 11->22         started        24 conhost.exe 13->24         started        signatures5 process6 dnsIp7 38 webmail.mdist.us 192.185.226.148, 49705, 587 UNIFIEDLAYER-AS-1US United States 15->38 28 C:\Users\user\AppData\Roaming\...\ppptOL.exe, PE32 15->28 dropped 30 C:\Windows\System32\drivers\etc\hosts, ASCII 15->30 dropped 40 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 15->40 42 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 15->42 44 Tries to steal Mail credentials (via file access) 15->44 46 5 other signatures 15->46 26 conhost.exe 20->26         started        file8 signatures9 process10
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/38436d4f78977a760f11f9590f6a9e58be5d1b2a0f1dd7c7841fc525812b5a0e/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2021-03-05 14:06:04 UTC
AV detection:
13 of 28 (46.43%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=hbbw2t3ys55hmdyr7fmq62u6lc7f2gzkb4o5pr4ed7cslajlliha._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
Similar samples:
172bf83e65684b1b9312684aa6cc37ddb15003b93fd80571fe4f9a8289d96da0
AgentTesla
492a4a339324e1bb41f6d4d74b43c8bd886fed3f808532e599a49a3f220d1878
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4ee357dd7681ca5f80acaeb7d55df4432de5d370c73e6bb887e3461b6ed537f8
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569d9358801eb518b152cb73009131508a3f14b136b0eb80025ccf438865a440
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72da1e5fdfc57c07501ab49085450aac225737f4eafd1a9a2a2d2ce46f615b19
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9785024470a4d46ec73337a43698c74387853bbe500c7d893eed47730da1ecd5
AgentTesla
a1071d7b923717b0ef2dbc6fa2549510f1a4921273828037753c27a77b2abfbe
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b9c82068f2880f34b3bf0dfb60d5c14c51d9317845cc58cb181a1e2639a960c4
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eb9de162cbe1af46b276cebd9141ece2b6bd02847d906e4078b2dc8ded5c2a06
AgentTesla
f892fa6757d9aab17b11c24debe91cc7ecd4591bc656f9e653dacf883a1b764f
AgentTesla
+ 3'030 additional samples on MalwareBazaar
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
family:agenttesla keylogger persistence spyware stealer trojan
Link:
https://tria.ge/reports/210306-ckzn4j2vde/
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Adds Run key to start application
Drops file in Drivers directory
AgentTesla Payload
AgentTesla
Unpacked files
SH256 hash:
958c59e4b0987bdaee97ebf0706f6df60f66071f1fe358aa2e4ac4b4aa637a0e
MD5 hash:
bf598436d0d0a71a5dc296d2460ccd8e
SHA1 hash:
3db1e39f296e2e3dda5ef6fbe455f4b4e2d73829
Link:
https://www.unpac.me/results/ec2db528-c3a6-4d06-ad74-a6ad98d9f7a8/
SH256 hash:
f8b5b51efedb3e87493ac2439473564603cc3059d57956f209a7310e311a1027
MD5 hash:
d66f89bf838fb52ed59d311a99aea214
SHA1 hash:
342525c4aabbb92abf51459081d34ed0f1cdc965
Link:
https://www.unpac.me/results/ec2db528-c3a6-4d06-ad74-a6ad98d9f7a8/
SH256 hash:
99d7822750fe2badda1b2fd318f92b247dc7ed236a9e2f13755fba75860ef24f
MD5 hash:
bc84fa22b8644e28687151087c40f505
SHA1 hash:
138ccc1d8464e5135ea858db28b1d4582583dec2
Link:
https://www.unpac.me/results/ec2db528-c3a6-4d06-ad74-a6ad98d9f7a8/
SH256 hash:
38436d4f78977a760f11f9590f6a9e58be5d1b2a0f1dd7c7841fc525812b5a0e
MD5 hash:
d702ce5e761291981609e57ce31ad41f
SHA1 hash:
603c9d9973f0fe0ace310031a303baf0fd96bc53
Link:
https://www.unpac.me/results/ec2db528-c3a6-4d06-ad74-a6ad98d9f7a8/
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/38436d4f78977a760f11f9590f6a9e58be5d1b2a0f1dd7c7841fc525812b5a0e

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:ach_AgentTesla_20200929
Create hunting rule
Author:abuse.ch
Description:Detects AgentTesla PE
Rule name:MALWARE_Win_AgentTeslaV3
Create hunting rule
Author:ditekSHen
Description:AgentTeslaV3 infostealer payload
Rule name:win_agent_tesla_v1
Create hunting rule
Author:Johannes Bader @viql
Description:detects Agent Tesla

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Malspam

AgentTesla

7z 3515649e5cea9b3b06c66f04794307780af58f72eff9c7a1a2bf6c88f6e378a6

AgentTesla

Executable exe 38436d4f78977a760f11f9590f6a9e58be5d1b2a0f1dd7c7841fc525812b5a0e

(this sample)

  
Dropped by
MD5 1c329242d9084baf0b1f4b5566002ceb
  
Dropped by
SHA256 3515649e5cea9b3b06c66f04794307780af58f72eff9c7a1a2bf6c88f6e378a6
  
Dropped by
AgentTesla
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/122637/

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