MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 21bc6e657606c08dca9703d2149640fa9738c460c8d71a65b8913b5c7a7ae0f4. 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: 8


Intelligence 8 IOCs YARA 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 21bc6e657606c08dca9703d2149640fa9738c460c8d71a65b8913b5c7a7ae0f4
SHA3-384 hash: 39d444252908201cd07c599d41b790eea582b9dcd5822adc1d7906bbc4c56b52144e3961cf625dad887b3a1d2f0e04a7
SHA1 hash: 1021e7a98f945c5b910646ceec49e213f3bd1104
MD5 hash: 545e336e9b3957da924cdbf9ccc49037
humanhash: papa-purple-johnny-harry
File name:545e336e9b3957da924cdbf9ccc49037.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:549'376 bytes
First seen:2021-02-17 13:58:03 UTC
Last seen:2021-02-17 16:10:09 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'666 x AgentTesla, 19'479 x Formbook, 12'209 x SnakeKeylogger)
ssdeep 6144:10IuT7e4WDAJJ/04SGbIRPyfThLEemQvywtjrCbdJCJXPaezI2xUZc97L+tfPLX:1K7+DMJ8Gg0SwthXPDIlcktfPL
Threatray 2'727 similar samples on MalwareBazaar
TLSH 36C4D02233C4CF65D53967B4D021C3F013F2EC169226D21FAE99BD9B7C66AC582663D2
Reporter abuse_ch
Tags:AgentTesla exe


Avatar
abuse_ch
AgentTesla SMTP exfil server:
mail.sky-qrp.com:587

Intelligence

File Origin
# of uploads :
2
# of downloads :
133
Origin country :
n/a
Vendor Threat Intelligence
Detection(s):
SecuriteInfo.com.CAP_HookExKeylogger.9659.10807.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
Launching a process
Creating a process with a hidden window
Result
Verdict:
SUSPICIOUS
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.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/610388
Signature
.NET source code contains very large array initializations
Binary contains a suspicious time stamp
C2 URLs / IPs found in malware configuration
Contains functionality to log keystrokes (.Net Source)
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
Injects a PE file into a foreign processes
Moves itself to temp directory
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
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)
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected AgentTesla
Yara detected AntiVM_3
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 354214 Sample: 6UYAC8WAoJ.exe Startdate: 17/02/2021 Architecture: WINDOWS Score: 100 64 Found malware configuration 2->64 66 Sigma detected: Scheduled temp file as task from temp location 2->66 68 Multi AV Scanner detection for submitted file 2->68 70 8 other signatures 2->70 7 6UYAC8WAoJ.exe 7 2->7         started        11 YYtJku.exe 5 2->11         started        13 YYtJku.exe 4 2->13         started        process3 file4 44 C:\Users\user\AppData\Local\...\tmpB499.tmp, XML 7->44 dropped 46 C:\Users\user\AppData\...\6UYAC8WAoJ.exe.log, ASCII 7->46 dropped 48 C:\Users\user\AppData\Roaming\CvcHHOJ.exe, PE32 7->48 dropped 72 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 7->72 74 Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines) 7->74 76 Injects a PE file into a foreign processes 7->76 15 6UYAC8WAoJ.exe 2 5 7->15         started        20 schtasks.exe 1 7->20         started        22 6UYAC8WAoJ.exe 7->22         started        24 schtasks.exe 1 11->24         started        26 YYtJku.exe 2 11->26         started        28 schtasks.exe 13->28         started        30 YYtJku.exe 13->30         started        32 YYtJku.exe 13->32         started        signatures5 process6 dnsIp7 50 sky-qrp.com 66.70.204.222, 49762, 587 OVHFR Canada 15->50 52 mail.sky-qrp.com 15->52 54 192.168.2.1 unknown unknown 15->54 40 C:\Users\user\AppData\Roaming\...\YYtJku.exe, PE32 15->40 dropped 42 C:\Users\user\...\YYtJku.exe:Zone.Identifier, ASCII 15->42 dropped 56 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 15->56 58 Moves itself to temp directory 15->58 60 Tries to steal Mail credentials (via file access) 15->60 62 3 other signatures 15->62 34 conhost.exe 20->34         started        36 conhost.exe 24->36         started        38 conhost.exe 28->38         started        file8 signatures9 process10
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/21bc6e657606c08dca9703d2149640fa9738c460c8d71a65b8913b5c7a7ae0f4/
Threat name:
ByteCode-MSIL.Trojan.Ymacco
Create hunting rule
Status:
Malicious
First seen:
2021-02-17 13:58:07 UTC
AV detection:
18 of 29 (62.07%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=eg6g4zlwa3ai3suxapjbjfsa7kltrrdazdlruznyse5vy6t24d2a._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
Similar samples:
04011c1270f49d82c05e80b9702130e0b62acaf6dd62b46c148a383da5b3e51a
AgentTesla
261036c3c84844bc59b94e39261363d6d9443350e27e1fd4fa8e7716ab6a2e83
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2aa2a644cc059d9314a783e295e4c35102ffce374e2bf1b49f8fb8631ffdbb65
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45b183f3ab8e0ad421664b353e4951aa08d3f2e0ee0667a5b10d4dba5e5bb691
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4a02a5be4110a5eac3e639deaecb4f134dc1788a4623b1d6a92eea75cdf6f31e
AgentTesla
4c65b9e49af0ac895cb7cbe2099df2897989de14251326355890db7238a1d340
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aaf00e1348307208d3415f629193cdf125171170a32a8cdeb140e8373d079714
AgentTesla
bccc9e3d756a755324883a0587184066522a027831dc451f0ccdc9a4162c95a2
AgentTesla
d10cc6c8d46490d39d15fa0f26620b5816404d1ef1083cda839827e33f30ef4f
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d9b7bb2c86f319f087b2e08d9097639b134acff8298e28a736a103e4eb3a6cbf
AgentTesla
+ 2'717 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  6/10
Tags:
persistence
Link:
https://tria.ge/reports/210217-8r6t5yh2a2/
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: RenamesItself
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Adds Run key to start application
Unpacked files
SH256 hash:
b2499a2af35b550fbe7f541a14ff1225e1202324f351eecf85de6c8e9fc7c27c
MD5 hash:
5e732e4265622675313195dead01047e
SHA1 hash:
359c710a93c2f58cdc2a45de8dd48a6884a70645
Link:
https://www.unpac.me/results/d69311db-9477-44c6-85a4-a7d5f4e3cdd0/
SH256 hash:
21bc6e657606c08dca9703d2149640fa9738c460c8d71a65b8913b5c7a7ae0f4
MD5 hash:
545e336e9b3957da924cdbf9ccc49037
SHA1 hash:
1021e7a98f945c5b910646ceec49e213f3bd1104
Link:
https://www.unpac.me/results/d69311db-9477-44c6-85a4-a7d5f4e3cdd0/
Please note that we are no longer able to provide a coverage score for Virus Total.

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:CAP_HookExKeylogger
Create hunting rule
Author:Brian C. Bell -- @biebsmalwareguy
Reference:https://github.com/DFIRnotes/rules/blob/master/CAP_HookExKeylogger.yar
Rule name:INDICATOR_SUSPICIOUS_Stomped_PECompilation_Timestamp_InTheFu
Create hunting rule
Author:ditekSHen
Description:Detect executables with stomped PE compilation timestamp that is greater than local current time
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.

Web download

AgentTesla

Executable exe 21bc6e657606c08dca9703d2149640fa9738c460c8d71a65b8913b5c7a7ae0f4

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/1015323/
  
Delivery method
Distributed via web download

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