MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 538de2b03d110b5a4e88b93442e65449e70a8fd83f085309b114ed4fd7d859ac. 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 15 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 538de2b03d110b5a4e88b93442e65449e70a8fd83f085309b114ed4fd7d859ac
SHA3-384 hash: 37de9530e158da76e77da9f183daef85ba97b936c8beaa6ee3fc0670cf2e59883a25a1e0ffab979adbef7176991ade4c
SHA1 hash: 583ccc5135526ff5ae3de6437644652f55789e90
MD5 hash: 66c07fbf50ace1c7ba8fc4783b3c84c3
humanhash: washington-west-sweet-yellow
File name:QUOTATION_NOVQTRFA00541·PDF.scr
Download: download sample
Signature AgentTesla
Create hunting rule
File size:761'616 bytes
First seen:2023-11-09 13:04:09 UTC
Last seen:2023-11-10 09:04:34 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'746 x AgentTesla, 19'628 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 12288:D3SVbl4/Yw62oCti7nVtXSqohNc3p4FE6IrLa:1Qwzw3X8huAEE
TLSH T109F49D893774923ECE08C63450E2DD14DAEB9D195BE1A20975D8B66C2B363FD4F236C2
TrID 67.7% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
9.7% (.EXE) Win64 Executable (generic) (10523/12/4)
6.0% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.6% (.EXE) Win16 NE executable (generic) (5038/12/1)
4.1% (.EXE) Win32 Executable (generic) (4505/5/1)
File icon (PE):PE icon
dhash icon 7068ccb0b2b2b2f8 (129 x AgentTesla, 54 x SnakeKeylogger, 28 x AveMariaRAT)
Reporter TeamDreier
Tags:AgentTesla exe

Intelligence

File Origin
# of uploads :
3
# of downloads :
308
Origin country :
DK DK
Vendor Threat Intelligence
Detection(s):
SecuriteInfo.com.Win32.DropperX-gen.5822.19053.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Sending a custom TCP request
Launching a process
Creating a file
Using the Windows Management Instrumentation requests
Creating a window
Unauthorized injection to a system process
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/538de2b03d110b5a4e88b93442e65449e70a8fd83f085309b114ed4fd7d859ac
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.
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/e4ece073-706b-4f1b-ab14-fcf22dc5ece9
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1339728
Signature
.NET source code contains potential unpacker
Allocates memory in foreign processes
Contains functionality to log keystrokes (.Net Source)
Contains functionality to register a low level keyboard hook
Found malware configuration
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
Installs a global keyboard hook
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 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 steal Mail credentials (via file / registry access)
Writes to foreign memory regions
Yara detected AgentTesla
Yara detected Costura Assembly Loader
Behaviour
Behavior Graph:
Download SVG
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/538de2b03d110b5a4e88b93442e65449e70a8fd83f085309b114ed4fd7d859ac
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/538de2b03d110b5a4e88b93442e65449e70a8fd83f085309b114ed4fd7d859ac/
Threat name:
Win32.Spyware.Negasteal
Create hunting rule
Status:
Malicious
First seen:
2023-11-09 09:19:29 UTC
File Type:
PE (.Net Exe)
Extracted files:
30
AV detection:
18 of 24 (75.00%)
Threat level:
  2/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=kog6fmb5cefvutuixe2efzsujhtqvd6yh4efgcnrctwu7v6ylgwa._file
Verdict:
malicious
Label(s):
agenttesla_v4
Create hunting rule
Result
Malware family:
agenttesla
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Score:
  10/10
Tags:
family:agenttesla keylogger spyware stealer trojan
Link:
https://tria.ge/reports/231109-qbhaaaag98/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Program crash
Suspicious use of SetThreadContext
AgentTesla
Unpacked files
SH256 hash:
a062fe931384ec40ab2a1e5fb535515d693bddc2138cf758f1223e94bf1e6b18
MD5 hash:
49c88d12966d6fa58d45c437c434ca6a
SHA1 hash:
f293397ba4c5cb1cda30d1d5381bd57625e2dab6
Link:
https://www.unpac.me/results/6b63d97d-db18-4491-b05f-2ec1686f077b/
SH256 hash:
37cbd4a8ed35b1eafec560bc24dd68b6647c1d1ab886d89a7bb3ba0610a2c334
MD5 hash:
69cdb44a3c07beb7856653e388550f16
SHA1 hash:
b9fb8522ba24bb6bd13871e5491877d8ef1318e5
Link:
https://www.unpac.me/results/6b63d97d-db18-4491-b05f-2ec1686f077b/
SH256 hash:
78489f2e95c23802af7e0f7de3d424e6954694dfad188e8c69289ff75fae98ea
MD5 hash:
10819df422e98ade2af3b91a4436770e
SHA1 hash:
a892463123137584b4de8b332cf8edf1040283a7
Detections:
AgentTesla
Create hunting rule
win_agent_tesla_g2
Create hunting rule
Link:
https://www.unpac.me/results/6b63d97d-db18-4491-b05f-2ec1686f077b/
Parent samples :
ddd5d81f5be6314dfaa80c13fb6332b2b7e94b218b049447b37ead946f21be78
3838d700587705b7ca1c4841b7432f96dab120bf04920644df95493ddabe7ad2
daf050ba6e318d8c8ff6733b838a7ae1007b66ccb467aaf0dfb9de81209c0d73
43a9be811611717939ad71f7b92ce62bd44cc096dcc463338952a7aff113c29b
538de2b03d110b5a4e88b93442e65449e70a8fd83f085309b114ed4fd7d859ac
ed414c5cd76f7735a701b3c734bc8b7fc0d21e2143eae7925e57451d49b256ea
5030bc30c14139d9c48dc4cd175de6c966e83a9059035d18af33dda06f2541ab
SH256 hash:
19efdf03cb94895935225795f68bb9abfded1869687367013b8b4eee3cc99372
MD5 hash:
4e29f75c0c51b9dec76955f0382d9541
SHA1 hash:
4899aa8e3f57339cbaec8faab777897a76fe1c3a
Link:
https://www.unpac.me/results/6b63d97d-db18-4491-b05f-2ec1686f077b/
SH256 hash:
93df0488d468d267ce85b4bdffffecaba78bab0bd9a3ef7363a1945ced48992a
MD5 hash:
61a0cac8b322eb1886d2d08bae1f29f8
SHA1 hash:
2a171ce83de983e27d01ace97d11b6e06313c5c0
Link:
https://www.unpac.me/results/6b63d97d-db18-4491-b05f-2ec1686f077b/
SH256 hash:
538de2b03d110b5a4e88b93442e65449e70a8fd83f085309b114ed4fd7d859ac
MD5 hash:
66c07fbf50ace1c7ba8fc4783b3c84c3
SHA1 hash:
583ccc5135526ff5ae3de6437644652f55789e90
Link:
https://www.unpac.me/results/6b63d97d-db18-4491-b05f-2ec1686f077b/
Malware family:
AgentTesla
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/538de2b03d11/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/538de2b03d110b5a4e88b93442e65449e70a8fd83f085309b114ed4fd7d859ac

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_Digital_Certificate
Create hunting rule
Author:albertzsigovits
Rule name:pe_imphash
Create hunting rule
Rule name:PE_Potentially_Signed_Digital_Certificate
Create hunting rule
Author:albertzsigovits
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 538de2b03d110b5a4e88b93442e65449e70a8fd83f085309b114ed4fd7d859ac

(this sample)

  
Delivery method
Distributed via e-mail attachment

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