MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 81607f328c9d5e1c34779b41092251a9c9e29aeb7e66cee54836be1b6645abdc. 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: 10


Intelligence 10 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 81607f328c9d5e1c34779b41092251a9c9e29aeb7e66cee54836be1b6645abdc
SHA3-384 hash: 4b4804949e59a0b4364f1244e2ee4a5c00d16133603800697fb2fa77a08aff4c02bd19a435c6f0ab1f989333c5203133
SHA1 hash: 09f1366588df94215e388e3fb45a961465bca9ac
MD5 hash: 6452a0e04a32341c335f1f654d8f3112
humanhash: zulu-florida-jersey-mobile
File name:statement of account.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:769'024 bytes
First seen:2022-04-04 13:30:56 UTC
Last seen:2022-04-06 14:16:43 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 12288:X3xw/ZZRKjLU2DKD0UFTkBjrmB9Bsf8yyC/vIKcw1C7+zqBda4gKxooFlP/1U7Jm:nx2LIKD0UFYBjrmB9/C9+
Threatray 15'652 similar samples on MalwareBazaar
TLSH T1D8F4F8ADB2F0769FC85BC93289641C64FA607C67630BC207A05725ADD96D997CF203F2
Reporter GovCERT_CH
Tags:AgentTesla exe

Intelligence

File Origin
# of uploads :
5
# of downloads :
235
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/260616/
Detection(s):
SecuriteInfo.com.Trojan.Siggen17.34260.4278.31880.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Сreating synchronization primitives
Creating a file in the %AppData% directory
Creating a file in the %temp% directory
Launching a process
Creating a process with a hidden window
Unauthorized injection to a recently created process
Creating a file
Using the Windows Management Instrumentation requests
Creating a file in the %AppData% subdirectories
Reading critical registry keys
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Stealing user critical data
Enabling autorun by creating a file
Changing the hosts file
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
obfuscated packed update.exe
Link:
https://www.filescan.io/uploads/624af31640ce5db9f40347e1/reports/1d228ab5-221d-4f3b-8b05-a5a685a379b1/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/2e21ef29-27bd-4411-a3d2-cc32c6407d72
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.adwa.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/970075
Signature
.NET source code contains very large array initializations
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
Malicious sample detected (through community Yara rule)
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: Suspicious Add Scheduled Task From User AppData Temp
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 / registry access)
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected AgentTesla
Yara detected AntiVM3
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 602565 Sample: statement of account.exe Startdate: 04/04/2022 Architecture: WINDOWS Score: 100 56 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->56 58 Malicious sample detected (through community Yara rule) 2->58 60 Multi AV Scanner detection for dropped file 2->60 62 11 other signatures 2->62 7 kECjS.exe 4 2->7         started        10 statement of account.exe 6 2->10         started        13 kECjS.exe 3 2->13         started        process3 file4 64 Multi AV Scanner detection for dropped file 7->64 66 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 7->66 68 Machine Learning detection for dropped file 7->68 70 2 other signatures 7->70 15 kECjS.exe 2 7->15         started        19 schtasks.exe 1 7->19         started        36 C:\Users\user\AppData\Roaming\YZJSZLO.exe, PE32 10->36 dropped 38 C:\Users\user\AppData\Local\...\tmpF30A.tmp, XML 10->38 dropped 40 C:\Users\...\statement of account.exe.log, ASCII 10->40 dropped 21 statement of account.exe 2 5 10->21         started        24 schtasks.exe 1 10->24         started        signatures5 process6 dnsIp7 44 Tries to harvest and steal ftp login credentials 15->44 46 Tries to harvest and steal browser information (history, passwords, etc) 15->46 26 conhost.exe 19->26         started        42 mail.indiacarpet.in 198.187.29.17, 49782, 49799, 587 NAMECHEAP-NETUS United States 21->42 30 C:\Users\user\AppData\Roaming\...\kECjS.exe, PE32 21->30 dropped 32 C:\Windows\System32\drivers\etc\hosts, ASCII 21->32 dropped 34 C:\Users\user\...\kECjS.exe:Zone.Identifier, ASCII 21->34 dropped 48 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 21->48 50 Tries to steal Mail credentials (via file / registry access) 21->50 52 Modifies the hosts file 21->52 54 Hides that the sample has been downloaded from the Internet (zone.identifier) 21->54 28 conhost.exe 24->28         started        file8 signatures9 process10
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/81607f328c9d5e1c34779b41092251a9c9e29aeb7e66cee54836be1b6645abdc/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2022-04-04 11:26:07 UTC
File Type:
PE (.Net Exe)
Extracted files:
12
AV detection:
28 of 42 (66.67%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=qfqh6mumtvpbyndxtnaqsisrvhe6fgxlpztm5zkig27bwzsfvpoa._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
Similar samples:
20b7b1c260f94daef7d5fa785b9fd1427e13c4f81f390d06850bd4aa40ead748
AgentTesla
224bbbc912c40294811c705b9fc49e3a9b88b766d04b46665e40fe0b3ec8cfca
AgentTesla
ee02fd2aa84bc7c690af4b524bb3c30b9af3f81da461c9a792369a8ecac7e0c5
AgentTesla
ee61d9ef7a173258abdeb2d261276de1ff1c5386b9328c51a92b0f805c5462e8
AgentTesla
f6e4842040712cdd0f767cd5a2a5be80c0928872f2399a671f66ad544b37fa5d
AgentTesla
+ 15'642 additional samples on MalwareBazaar
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
family:agenttesla collection keylogger persistence spyware stealer suricata trojan
Link:
https://tria.ge/reports/220404-qsc2wsagfp/
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
Checks computer location settings
Reads data files stored by FTP clients
Reads user/profile data of local email clients
Reads user/profile data of web browsers
Drops file in Drivers directory
AgentTesla
suricata: ET MALWARE AgentTesla Exfil Via SMTP
Unpacked files
SH256 hash:
fa530cceea3d05546dfe7b212416348c423d65a216002a249cf0444a650645cf
MD5 hash:
3abdf68541e5200f734f698e06e12bd7
SHA1 hash:
ec327ce3b2057aa3733ec08db55e61c3ea00eb31
Link:
https://www.unpac.me/results/ba329e5a-5c53-4593-b6f8-87606ea33000/
SH256 hash:
0e8689e5431c896429e191acbd6effff287528d3c70f646a971b3796eceb9089
MD5 hash:
d30b1185c8f1a30c8e626dc8ad54f9e9
SHA1 hash:
89396c9e3d50bb16059090067347d8cdfb9c58ad
Link:
https://www.unpac.me/results/ba329e5a-5c53-4593-b6f8-87606ea33000/
SH256 hash:
79823e47436e129def4fba8ee225347a05b7bb27477fb1cc8be6dc9e9ce75696
MD5 hash:
39f524c1ab0eb76dfd79b2852e5e8c39
SHA1 hash:
428018e1701006744e34480b0029982a76d8a57d
Link:
https://www.unpac.me/results/ba329e5a-5c53-4593-b6f8-87606ea33000/
SH256 hash:
81607f328c9d5e1c34779b41092251a9c9e29aeb7e66cee54836be1b6645abdc
MD5 hash:
6452a0e04a32341c335f1f654d8f3112
SHA1 hash:
09f1366588df94215e388e3fb45a961465bca9ac
Link:
https://www.unpac.me/results/ba329e5a-5c53-4593-b6f8-87606ea33000/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/81607f328c9d/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/81607f328c9d5e1c34779b41092251a9c9e29aeb7e66cee54836be1b6645abdc

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 81607f328c9d5e1c34779b41092251a9c9e29aeb7e66cee54836be1b6645abdc

(this sample)

  
Dropped by
agenttesla
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/260616/

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