MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a4b5059d45b0d597376b42a4edf44552cd2cfbd49c6917010fd42eb5ad75b7c9. 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: 16


Intelligence 16 IOCs YARA 13 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a4b5059d45b0d597376b42a4edf44552cd2cfbd49c6917010fd42eb5ad75b7c9
SHA3-384 hash: 63e13f9828a65e5c27c06253ea8212247e147d30e7c6519fee79119a849b2e51e77635588c066f1a0995395318334ba8
SHA1 hash: 42119052aebf2598d10badef049af0f95c519bb2
MD5 hash: 9192715381b6ff18991f939f249bc136
humanhash: emma-purple-crazy-undress
File name:RFQ MT-764439977.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:634'368 bytes
First seen:2023-11-07 11:09:00 UTC
Last seen:2024-03-06 13:31:47 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 12288:KJoORJlncp9RtNMcwXXn3sV1Ux892s7blVySHe7jMevHYaKW/fo:ko8JlcxtWc0waFCqXBY3WHo
TLSH T145D4230DF38C8612D2BD09F609F19AA403B5E4128C41D75988CDF1D46972B6B9A49FFF
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 d4060733230706d4 (9 x AgentTesla, 2 x Loki, 2 x Formbook)
Reporter cocaman
Tags:AgentTesla exe RFQ

Intelligence

File Origin
# of uploads :
2
# of downloads :
484
Origin country :
CH CH
Vendor Threat Intelligence
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Сreating synchronization primitives
Creating a process with a hidden window
Launching a process
Creating a file
Using the Windows Management Instrumentation requests
Reading critical registry keys
DNS request
Sending a custom TCP request
Forced shutdown of a system process
Stealing user critical data
Adding an exclusion to Microsoft Defender
Unauthorized injection to a system process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
packed
Link:
https://www.filescan.io/uploads/654a1ad0641154c7e3ed1765/reports/bec275d3-031e-491a-a5d5-2bf05228946f/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/a4b5059d45b0d597376b42a4edf44552cd2cfbd49c6917010fd42eb5ad75b7c9
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.
Malware family:
Agent Tesla
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/2e17e7ba-89cc-4c5a-8dc2-81e7fb51b12f
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1338145
Signature
.NET source code contains potential unpacker
Adds a directory exclusion to Windows Defender
Allocates memory in foreign processes
Contains functionality to log keystrokes (.Net Source)
Found malware configuration
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines)
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Uses the Telegram API (likely for C&C communication)
Writes to foreign memory regions
Yara detected AgentTesla
Yara detected AntiVM3
Yara detected Generic Downloader
Yara detected Telegram RAT
Behaviour
Behavior Graph:
Download SVG
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/a4b5059d45b0d597376b42a4edf44552cd2cfbd49c6917010fd42eb5ad75b7c9
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/a4b5059d45b0d597376b42a4edf44552cd2cfbd49c6917010fd42eb5ad75b7c9/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2023-11-07 08:41:08 UTC
File Type:
PE (.Net Exe)
Extracted files:
7
AV detection:
17 of 24 (70.83%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=us2qlhkfwdkzon3likso35cfklgsz66utruroaip2qxllllvw7eq._file
Verdict:
malicious
Label(s):
agenttesla_v4
Create hunting rule
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
family:agenttesla keylogger spyware stealer trojan
Link:
https://tria.ge/reports/231107-m84yrsff93/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Program crash
Suspicious use of SetThreadContext
Checks computer location settings
AgentTesla
Malware Config
C2 Extraction:
https://api.telegram.org/bot6631738496:AAG2zE5i799qnEmdlleUzTqWLMkSGsE8aDc/
Unpacked files
SH256 hash:
18e96b85c1961ed98d569d6ad74008a4d7af762b63158a4a2d41f990ddc84db4
MD5 hash:
c6b01d6795c066cc4beb57916740af31
SHA1 hash:
d866d0532924cd6c9d63cc17375b48e0c8401ff8
Link:
https://www.unpac.me/results/e361fbea-5b7c-4154-a840-2102f561db99/
SH256 hash:
d01f3dea3851602ba5a0586c60430d286adf6fcc7e17aab080601a66630606e5
MD5 hash:
579197d4f760148a9482d1ebde113259
SHA1 hash:
cf6924eb360c7e5a117323bebcb6ee02d2aec86d
Link:
https://www.unpac.me/results/e361fbea-5b7c-4154-a840-2102f561db99/
SH256 hash:
39be97a7f395f22909f4d44315c8b3a6cc241fe7f51015616fcd479fcedbd4ee
MD5 hash:
b680df050487d112524b58b71490ca60
SHA1 hash:
6eddbbc04433531e575303c57b6ad5a8a33a69ef
Detections:
win_agent_tesla_g2
Create hunting rule
Link:
https://www.unpac.me/results/e361fbea-5b7c-4154-a840-2102f561db99/
Parent samples :
dddd04107a979e9ae28128d6da0362e79a9d64e578bd89fc2efb93a8caa400e6
a4b5059d45b0d597376b42a4edf44552cd2cfbd49c6917010fd42eb5ad75b7c9
7988cea3b3e086861ff47574c0081bd6b74b386dbad4ccf6f1843f6975c4b37f
e914375794ce1cde4a1caa435ff42bb9eaf9c74f5f0138fd8009605c9411b789
3dbb28273d91ded728b3d6186c25efce2db5e7ce2d87f8cf2a508b7a00181b26
SH256 hash:
bfef9eac82e53e8d63bcb3b3022880eaf8f22cbbc6c69f3782b59c438f649f12
MD5 hash:
ddf81912128dd196140e9be656c3a212
SHA1 hash:
51221baf7115f7f2de03cd00b8b25cfde9241a35
Link:
https://www.unpac.me/results/e361fbea-5b7c-4154-a840-2102f561db99/
SH256 hash:
a4b5059d45b0d597376b42a4edf44552cd2cfbd49c6917010fd42eb5ad75b7c9
MD5 hash:
9192715381b6ff18991f939f249bc136
SHA1 hash:
42119052aebf2598d10badef049af0f95c519bb2
Link:
https://www.unpac.me/results/e361fbea-5b7c-4154-a840-2102f561db99/
Malware family:
AgentTesla
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/a4b5059d45b0/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/a4b5059d45b0d597376b42a4edf44552cd2cfbd49c6917010fd42eb5ad75b7c9

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:AgentTeslaV3
Create hunting rule
Author:ditekshen
Description:AgentTeslaV3 infostealer payload
Rule name:INDICATOR_EXE_Packed_GEN01
Create hunting rule
Author:ditekSHen
Description:Detect packed .NET executables. Mostly AgentTeslaV4.
Rule name:INDICATOR_SUSPICIOUS_Binary_References_Browsers
Create hunting rule
Author:ditekSHen
Description:Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers.
Rule name:INDICATOR_SUSPICIOUS_EXE_References_Confidential_Data_Store
Create hunting rule
Author:ditekSHen
Description:Detects executables referencing many confidential data stores found in browsers, mail clients, cryptocurreny wallets, etc. Observed in information stealers
Rule name:INDICATOR_SUSPICIOUS_EXE_References_Messaging_Clients
Create hunting rule
Author:ditekSHen
Description:Detects executables referencing many email and collaboration clients. Observed in information stealers
Rule name:INDICATOR_SUSPICIOUS_EXE_Referenfces_File_Transfer_Clients
Create hunting rule
Author:ditekSHen
Description:Detects executables referencing many file transfer clients. Observed in information stealers
Rule name:INDICATOR_SUSPICIOUS_EXE_VaultSchemaGUID
Create hunting rule
Author:ditekSHen
Description:Detects executables referencing Windows vault credential objects. Observed in infostealers
Rule name:malware_Agenttesla_type2
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect Agenttesla in memory
Reference:internal research
Rule name:NET
Create hunting rule
Author:malware-lu
Rule name:NETexecutableMicrosoft
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 ad01e26353d5ad0fb83a8d385f1d2e2dc87d38fbf08ec8b20a3834332d07d91e

AgentTesla

Executable exe a4b5059d45b0d597376b42a4edf44552cd2cfbd49c6917010fd42eb5ad75b7c9

(this sample)

  
Delivery method
Other
  
Dropped by
SHA256 ad01e26353d5ad0fb83a8d385f1d2e2dc87d38fbf08ec8b20a3834332d07d91e
  
Dropped by
MD5 7be30f9cdbc85197d27316aa68094fa0

Comments