MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b6c83502e71d7e9d136ef9c7613bba5bb3447c08ffa9025360800f09b37a63a6. 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: 14


Intelligence 14 IOCs YARA 7 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b6c83502e71d7e9d136ef9c7613bba5bb3447c08ffa9025360800f09b37a63a6
SHA3-384 hash: 029871f9eb9b9f505a209edcb45e9a1db63c206a964018f84edbbaee3eccfd1849f121c303258141e3efbd3c089fdf37
SHA1 hash: 89c28e8f12bc268e889977bc3d76a47827dc52e1
MD5 hash: f46489a60ef20f0caf331a21a66c195a
humanhash: friend-wisconsin-mars-vegan
File name:tt62yVcIZ38yaYi.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:463'872 bytes
First seen:2021-10-06 04:51:51 UTC
Last seen:2021-10-08 07:56:08 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'661 x AgentTesla, 19'474 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 6144:utGNvc4f4AJkHpqpihPFBAV+cgIhL6PY/kIgGyMzooD8Lgy6zDhQ+3HwON:utqnJk0iXBAVoIh+w/kIgy0ooOzGoN
Threatray 10'788 similar samples on MalwareBazaar
TLSH T10BA4F17E236B8E1FCD2945F62C44D39283F9A4A616AAC3B53C94B0FC2853BF459D1847
Reporter GovCERT_CH
Tags:AgentTesla exe

Intelligence

File Origin
# of uploads :
4
# of downloads :
138
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
tt62yVcIZ38yaYi.exe
Verdict:
Suspicious activity
Analysis date:
2021-10-06 04:52:37 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/990861b4-6292-4b2e-96cb-9d4777fbf399

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/195235/
Detection(s):
SecuriteInfo.com.MSIL.Kryptik.VFR-1.UNOFFICIAL
Create hunting rule

SecuriteInfo.com.Trojan.PackedNET.935-1.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Launching a process
Creating a file in the %temp% directory
Delayed writing of the file
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
fareit packed
Link:
https://www.filescan.io/uploads/615d2b7598a6280f3932b56c/reports/3a8b587e-0791-4883-a473-e8b0d338ed89/overview
Malware family:
Agent Tesla
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/37db5118-22db-4d72-8e55-d62429deff3a
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.adwa.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/865226
Signature
.NET source code contains very large array initializations
Allocates memory in foreign processes
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
Injects a PE file into a foreign processes
Modifies the hosts file
Multi AV Scanner detection for submitted file
Performs DNS queries to domains with low reputation
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
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 access)
Writes to foreign memory regions
Yara detected AgentTesla
Yara detected AntiVM3
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 497651 Sample: tt62yVcIZ38yaYi.exe Startdate: 06/10/2021 Architecture: WINDOWS Score: 100 41 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->41 43 Found malware configuration 2->43 45 Multi AV Scanner detection for submitted file 2->45 47 5 other signatures 2->47 6 tt62yVcIZ38yaYi.exe 3 2->6         started        10 kprUEGC.exe 2 2->10         started        12 kprUEGC.exe 1 2->12         started        process3 file4 23 C:\Users\user\...\tt62yVcIZ38yaYi.exe.log, ASCII 6->23 dropped 49 Writes to foreign memory regions 6->49 51 Allocates memory in foreign processes 6->51 53 Injects a PE file into a foreign processes 6->53 14 RegSvcs.exe 2 4 6->14         started        19 conhost.exe 10->19         started        21 conhost.exe 12->21         started        signatures5 process6 dnsIp7 29 smtp.copangroup.xyz 14->29 31 us2.smtp.mailhostbox.com 208.91.198.143, 49842, 587 PUBLIC-DOMAIN-REGISTRYUS United States 14->31 25 C:\Users\user\AppData\Roaming\...\kprUEGC.exe, PE32 14->25 dropped 27 C:\Windows\System32\drivers\etc\hosts, ASCII 14->27 dropped 33 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 14->33 35 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 14->35 37 Tries to steal Mail credentials (via file access) 14->37 39 6 other signatures 14->39 file8 signatures9
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/b6c83502e71d7e9d136ef9c7613bba5bb3447c08ffa9025360800f09b37a63a6/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2021-10-06 02:51:42 UTC
AV detection:
17 of 45 (37.78%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=w3edkaxhdv7j2e3o7hdwco52lozui7ai76uqeu3aqahqtm32mota._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
Similar samples:
0b0497a471a34be0ac2c4719719527d6a73b4a0ad0d7b8f43d9c9af5119ce9cd
AgentTesla
123f349fcba6342f4485ac4fde03c22eb47cf70cce0bae103ac4e2ac4e82d02c
AgentTesla
1e48e299caf273c82056596b13ee00c8cbd1ecbf4ae100ad1ba8d71a5a226007
AgentTesla
9b34667882a750805aaf4e9dcac88614d613337cd13840c3cf6ac64fdce4c1f3
AgentTesla
a0174c1bd95cff4e16d5d6db97d02a8084e49bd0920fd814ed2eadcbfb20eea8
AgentTesla
d2adec41dcdb2142c210a4025572e29e1c011d079fa04504b35ab55c03376a16
AgentTesla
e6a574a819e0cc41ef5ccf5ddc5e7ff13fd2e4a18079ee07b63e377e6909c0c5
AgentTesla
ea05b076974558311ff108cb966d05542e518acd31307ee21013e65c1034ed39
AgentTesla
f4b39a7e09bbdd05663f9ff8b125cce58bab4f38ee63c6fbfff5ac0218d6ffe6
AgentTesla
+ 10'778 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/211006-fhesmaaee8/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Adds Run key to start application
Drops file in Drivers directory
AgentTesla Payload
AgentTesla
Unpacked files
SH256 hash:
4f0d5d87aff9a52ba9373cdf5c00378d673793fa901cbf10d3d14526f7af7c8b
MD5 hash:
5f00c27109190db463b3ee06f6251e06
SHA1 hash:
ad0e463b268db425d8c815ff154bc9a5f231829a
Link:
https://www.unpac.me/results/b6eb79ae-a765-414c-935e-8e6a12a6292c/
SH256 hash:
fe8637d821a39a8b74abce7e043007d38cb9c5cfcb7098af9846cfd98185ac03
MD5 hash:
c380b6831f456ac5cac08c78c0e4dada
SHA1 hash:
3e241a0b9d96c1dfbadd7ee1a8c5ee6d74eba11c
Link:
https://www.unpac.me/results/b6eb79ae-a765-414c-935e-8e6a12a6292c/
SH256 hash:
659fec42bd1fa7df0624c0755ffeff24e3156ba4c0ea0f388b363d9b3e4ff203
MD5 hash:
ad254c2ccb6a31ca04372fcb2b98447c
SHA1 hash:
1b1101a04bb756c03e4513eead08afb28ff2eeb3
Link:
https://www.unpac.me/results/b6eb79ae-a765-414c-935e-8e6a12a6292c/
SH256 hash:
b6c83502e71d7e9d136ef9c7613bba5bb3447c08ffa9025360800f09b37a63a6
MD5 hash:
f46489a60ef20f0caf331a21a66c195a
SHA1 hash:
89c28e8f12bc268e889977bc3d76a47827dc52e1
Link:
https://www.unpac.me/results/b6eb79ae-a765-414c-935e-8e6a12a6292c/
Malware family:
Agent Tesla v3
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/b6c83502e71d/report/overview.html
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/b6c83502e71d7e9d136ef9c7613bba5bb3447c08ffa9025360800f09b37a63a6

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:AgentTeslaV3
Create hunting rule
Author:ditekshen
Description:AgentTeslaV3 infostealer payload
Rule name:MALWARE_Win_AgentTeslaV3
Create hunting rule
Author:ditekSHen
Description:AgentTeslaV3 infostealer payload
Rule name:pe_imphash
Create hunting rule
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
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

Executable exe b6c83502e71d7e9d136ef9c7613bba5bb3447c08ffa9025360800f09b37a63a6

(this sample)

  
Dropped by
agenttesla
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/195235/

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