MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b4433a617f9ddd56e06449731280b7ffb14c2ba11ad12555fd95035dc4e46f6b. 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: 12


Intelligence 12 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b4433a617f9ddd56e06449731280b7ffb14c2ba11ad12555fd95035dc4e46f6b
SHA3-384 hash: b3dc0f673a2ea985c84d243b74284d0617087e0bc79a2dd42aaf1e9216d719b86ccbbcf3b128ad76b008dc3bc6ff14ba
SHA1 hash: f4dc360c02acb35be67f0add3018bcc000d0b358
MD5 hash: 7667b501106b79031e1354ed399eb5ed
humanhash: sierra-indigo-social-batman
File name:doc2022051601001.pdf.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:567'808 bytes
First seen:2022-05-16 05:21:04 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'748 x AgentTesla, 19'652 x Formbook, 12'246 x SnakeKeylogger)
ssdeep 12288:swXW66LhbDXAWCzoGKHROeJfOheL/321LcIgR:TgLhbDXAVsGKHQkfS4
Threatray 16'693 similar samples on MalwareBazaar
TLSH T13BC423546BEC4335E9BE21B6863E00115AF9FC0A5022E73A0DC995DAFDB2B40DFA4717
TrID 72.5% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.4% (.EXE) Win64 Executable (generic) (10523/12/4)
6.5% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.4% (.EXE) Win32 Executable (generic) (4505/5/1)
2.0% (.EXE) OS/2 Executable (generic) (2029/13)
File icon (PE):PE icon
dhash icon c0b0c6c8a896a0c0 (20 x AgentTesla, 19 x Formbook, 12 x Loki)
Reporter GovCERT_CH
Tags:AgentTesla exe

Intelligence

File Origin
# of uploads :
1
# of downloads :
224
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
agenttesla
Create hunting rule
ID:
1
File name:
doc2022051601001.pdf.exe
Verdict:
Malicious activity
Analysis date:
2022-05-16 08:33:11 UTC
Tags:
agenttesla
Link:
https://app.any.run/tasks/d9e2927a-f263-4f02-9d25-0dac78473012

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/270880/
Result
Verdict:
Clean
Maliciousness:

Behaviour
Creating a window
Launching a process
Creating a process with a hidden window
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
obfuscated packed replace.exe
Link:
https://www.filescan.io/uploads/6281df5bfd71ca8b2ee3727f/reports/95a26493-f960-460c-93a6-b1dcca59dc44/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.
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/0e769b07-39d4-4f62-9f2a-162c289fc669
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/994567
Signature
.NET source code contains method to dynamically call methods (often used by packers)
.NET source code contains potential unpacker
.NET source code contains very large array initializations
Adds a directory exclusion to Windows Defender
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 dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
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)
Snort IDS alert for network traffic
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 an obfuscated file name to hide its real file extension (double extension)
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: 627062 Sample: doc2022051601001.pdf.exe Startdate: 16/05/2022 Architecture: WINDOWS Score: 100 37 Snort IDS alert for network traffic 2->37 39 Found malware configuration 2->39 41 Malicious sample detected (through community Yara rule) 2->41 43 12 other signatures 2->43 7 doc2022051601001.pdf.exe 7 2->7         started        process3 file4 25 C:\Users\user\AppData\...\ksscjULsnI.exe, PE32 7->25 dropped 27 C:\Users\...\ksscjULsnI.exe:Zone.Identifier, ASCII 7->27 dropped 29 C:\Users\user\AppData\Local\...\tmpAFF2.tmp, XML 7->29 dropped 31 C:\Users\...\doc2022051601001.pdf.exe.log, ASCII 7->31 dropped 45 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 7->45 47 Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines) 7->47 49 Uses schtasks.exe or at.exe to add and modify task schedules 7->49 51 2 other signatures 7->51 11 doc2022051601001.pdf.exe 2 7->11         started        15 powershell.exe 1 7->15         started        17 schtasks.exe 1 7->17         started        19 2 other processes 7->19 signatures5 process6 dnsIp7 33 isnova.com.tr 109.232.217.109, 49742, 587 AEROTEK-ASTR Turkey 11->33 35 mail.isnova.com.tr 11->35 53 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 11->53 55 Tries to steal Mail credentials (via file / registry access) 11->55 57 Tries to harvest and steal ftp login credentials 11->57 59 2 other signatures 11->59 21 conhost.exe 15->21         started        23 conhost.exe 17->23         started        signatures8 process9
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/b4433a617f9ddd56e06449731280b7ffb14c2ba11ad12555fd95035dc4e46f6b/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2022-05-16 04:20:37 UTC
File Type:
PE (.Net Exe)
Extracted files:
6
AV detection:
20 of 26 (76.92%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=wrbtuyl7txovnydejfzrfafx76yuyk5bdliskvp5subv3rhen5vq._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
Similar samples:
2ca7a35579bc73bc645f69cc98dad04e9d85cc3e62467221c42a266cc0e80452
AgentTesla
605ade46e2008848c5d97ab59b76fa42ae845e3833545bf933b945ae6db9839f
AgentTesla
72f31458925d45d9de0f448b159d683de009387ee36852a659a2f30d04b7216c
AgentTesla
9c071afc054e8a65329317a6b449e9f4119a5546c2b3a5c2ce9bf2cb1a04a46e
AgentTesla
ba40d672744d9fea782381b7b609bc2cb381437d94afdaf458e17e8be0271fc2
AgentTesla
c36ec3f847b81b6e59ee1e6d17544ee886a3a85105d1aa06646df073f8590838
AgentTesla
f37a0441c66222c49723f8feae71cdce91423549228a852fb24a99fcb80c5e41
AgentTesla
+ 16'683 additional samples on MalwareBazaar
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
family:agenttesla collection keylogger spyware stealer trojan
Link:
https://tria.ge/reports/220516-f2j7fsegc2/
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
outlook_office_path
outlook_win_path
Enumerates physical storage devices
Suspicious use of SetThreadContext
Accesses Microsoft Outlook profiles
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
AgentTesla
Unpacked files
SH256 hash:
2ee4ec3aace823212164b15ec9c9d645a4744eb51bc0a2beee76d47685440cc4
MD5 hash:
b4b82af31f9d5861f9706b4fdc8db6c8
SHA1 hash:
e400aa2708b6acb36a243430e3292e07f1fbee83
Link:
https://www.unpac.me/results/c4ace97b-82c8-4688-9b7e-b8f8a05fabc8/
SH256 hash:
e9834d21065b95980a58cc3dc40ad2ca9c3df4f25aa347a449a8b4c1173ad427
MD5 hash:
111230e0dd43073023450e5b1a455c73
SHA1 hash:
59d3cd893063face179d1b681ff5437b7454a6c8
Link:
https://www.unpac.me/results/c4ace97b-82c8-4688-9b7e-b8f8a05fabc8/
SH256 hash:
709fdbef8932044e42231f14888aa12b12ddc571e6daba8af86d624a39fa63bf
MD5 hash:
a7a6647650fe0204d1ab042824d638be
SHA1 hash:
a1194aba19ab6190a412073fe1918cd1b559aacf
Link:
https://www.unpac.me/results/c4ace97b-82c8-4688-9b7e-b8f8a05fabc8/
SH256 hash:
b377701ab2f53d9c5b74ecd24202f488f83ea1dbf6c4a52ac2c0838f2a1e9e68
MD5 hash:
a296e4a0ce6afed95359c0c3b39f6db7
SHA1 hash:
61ded752f1118f76a2a541298687fbf1931e3dd0
Link:
https://www.unpac.me/results/c4ace97b-82c8-4688-9b7e-b8f8a05fabc8/
SH256 hash:
b4433a617f9ddd56e06449731280b7ffb14c2ba11ad12555fd95035dc4e46f6b
MD5 hash:
7667b501106b79031e1354ed399eb5ed
SHA1 hash:
f4dc360c02acb35be67f0add3018bcc000d0b358
Link:
https://www.unpac.me/results/c4ace97b-82c8-4688-9b7e-b8f8a05fabc8/
Malware family:
AgentTesla.v3
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/b4433a617f9d/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/b4433a617f9ddd56e06449731280b7ffb14c2ba11ad12555fd95035dc4e46f6b

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 b4433a617f9ddd56e06449731280b7ffb14c2ba11ad12555fd95035dc4e46f6b

(this sample)

  
Dropped by
agenttesla
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/270880/

Comments