MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a5b3f39420dfafa9d157f75e980c1fd8742ab42ec71d4170a8e1752589c5c83d. 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


Formbook


Vendor detections: 16


Intelligence 16 IOCs YARA 2 File information Comments
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SHA256 hash: a5b3f39420dfafa9d157f75e980c1fd8742ab42ec71d4170a8e1752589c5c83d
SHA3-384 hash: 9c03d0212a0408f37135706398f05140fcfd3d36e2c67eabc396b9a06bf86bc30bee76c2f9b2dba68507d0c32e46aecf
SHA1 hash: 147e8565f1c5bf2983a22a6f0ff633b8258889ea
MD5 hash: 421d4235271bffd240fdacab7aef2072
humanhash: mexico-london-dakota-nuts
File name:a5b3f39420dfafa9d157f75e980c1fd8742ab42ec71d4170a8e1752589c5c83d
Download: download sample
Signature Formbook
Create hunting rule
File size:834'048 bytes
First seen:2022-10-07 10:11:47 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'656 x AgentTesla, 19'464 x Formbook, 12'205 x SnakeKeylogger)
ssdeep 12288:QvCvsM4OEHslgDaN6ntfS3LeMjKrWwESUcxjJ8w9MllpcgoYRFdvKl1+HzZH+zaa:4YCzxTMjMUcxt8wOcNyFdcAHtaTm
TLSH T1A3051240769C8955D2E91E3A9827DF084630BCE3FD1DEB47BC88F699107AB98C540B9F
TrID 64.2% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
11.5% (.SCR) Windows screen saver (13101/52/3)
9.2% (.EXE) Win64 Executable (generic) (10523/12/4)
5.7% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
3.9% (.EXE) Win32 Executable (generic) (4505/5/1)
Reporter adrian__luca
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
237
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
a5b3f39420dfafa9d157f75e980c1fd8742ab42ec71d4170a8e1752589c5c83d
Verdict:
Malicious activity
Analysis date:
2022-10-07 10:11:11 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/1fb96fb6-8bbf-4a5e-80ee-e802bdb76bd0

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/317571/
Detection(s):
SecuriteInfo.com.Trojan.PackedNET.1496.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
DNS request
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
formbook packed
Link:
https://www.filescan.io/uploads/633ffb741225171535538534/reports/00dbaa02-1f68-4fd4-8372-15b407c82585/overview
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:
Formbook
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Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/926522ca-fc83-4541-9b87-c805e8ed2b11
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1085633
Signature
.NET source code contains potential unpacker
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Injects a PE file into a foreign processes
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
Modifies the context of a thread in another process (thread injection)
Modifies the prolog of user mode functions (user mode inline hooks)
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for submitted file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Snort IDS alert for network traffic
System process connects to network (likely due to code injection or exploit)
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to detect virtualization through RDTSC time measurements
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 718190 Sample: ATtxmW6nMl.exe Startdate: 07/10/2022 Architecture: WINDOWS Score: 100 32 Snort IDS alert for network traffic 2->32 34 Multi AV Scanner detection for domain / URL 2->34 36 Malicious sample detected (through community Yara rule) 2->36 38 9 other signatures 2->38 10 ATtxmW6nMl.exe 3 2->10         started        process3 file4 28 C:\Users\user\AppData\...\ATtxmW6nMl.exe.log, ASCII 10->28 dropped 48 Tries to detect virtualization through RDTSC time measurements 10->48 50 Injects a PE file into a foreign processes 10->50 14 ATtxmW6nMl.exe 10->14         started        signatures5 process6 signatures7 52 Modifies the context of a thread in another process (thread injection) 14->52 54 Maps a DLL or memory area into another process 14->54 56 Sample uses process hollowing technique 14->56 58 Queues an APC in another process (thread injection) 14->58 17 explorer.exe 14->17 injected process8 dnsIp9 30 www.jeuxjetx.fr 188.114.96.3, 49704, 80 CLOUDFLARENETUS European Union 17->30 40 System process connects to network (likely due to code injection or exploit) 17->40 21 control.exe 17->21         started        signatures10 process11 signatures12 42 Modifies the context of a thread in another process (thread injection) 21->42 44 Maps a DLL or memory area into another process 21->44 46 Tries to detect virtualization through RDTSC time measurements 21->46 24 cmd.exe 1 21->24         started        process13 process14 26 conhost.exe 24->26         started       
Detection:
formbook
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Link:
https://mwdb.cert.pl/sample/a5b3f39420dfafa9d157f75e980c1fd8742ab42ec71d4170a8e1752589c5c83d/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
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Status:
Malicious
First seen:
2022-08-20 01:50:53 UTC
File Type:
PE (.Net Exe)
Extracted files:
13
AV detection:
22 of 26 (84.62%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=uwz7hfba36x2tukx65pjqda73b2cvnboy4ouc4fi4f2slcofza6q._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Result
Malware family:
formbook
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Score:
  10/10
Tags:
family:formbook campaign:ng04 rat spyware stealer trojan
Link:
https://tria.ge/reports/221007-l8hj4acdal/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Formbook payload
Formbook
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/4f0ef423-a144-45b6-b029-a0335bf78371
Unpacked files
SH256 hash:
8c70809310f41a91ff32acc19f100291f1f891b50f755f7aaf3cfaa9b3605081
MD5 hash:
c31e5d9ba7aec5414d391e20a40e396f
SHA1 hash:
7c6fadf94aa41dbbc6c36ff1ae283d054e659843
Detections:
FormBook
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win_formbook_auto
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win_formbook_g0
Create hunting rule
Link:
https://www.unpac.me/results/0f07c339-b095-4b96-8569-ffeaf2a7de90/
Parent samples :
bd29947fc88d96b3f5b2982d67f1d5df99aad570ce86b87ed91103b8f43c3b8f
37e6fcc2791cdc7fa2f5a433d7b13d0d57857cde8ab4aec7e5da2879eee8bb59
3267b1eb2ba481661c36673fd9ece9d49a3e6ebe215ec02210fac50673cad1be
4555bb45a8a8d87ec2a075e1715934c8c43b4f260ad7d175668d4926cb4a664e
6670643884f45c79ebf03330570074899755e1f3902d7c08316ecbde4f57efa4
886f9ff18b92cf41d4c0a56e6720304130b15a1656bdc235bd4bf190ef8fd26c
7bfd0cbe00b3e14080e2001ec896a53d2f205caa56480a0d760f8460980da76b
062e12bd387057d358d7f0ba9a20f0fd62e3f589e2660bf63e2c85eb5ea827bd
0c7b5e8115ca42bf2a539dc86e042acdd873463d4724fbb61c923a6d0aa0e869
a5b3f39420dfafa9d157f75e980c1fd8742ab42ec71d4170a8e1752589c5c83d
af4e4f24d35ee2d2d5efdfcaff5d9b5c0b6173165d66e5e22ff44c53e8a316f4
7f8b18cb89b63284a7d5fed4c53f861f8ce52a6c7c776e8d7c4b1b223202c6f8
7b7a2b8c271be1e85158974a71fc1403a4ef4d617905f019d47206084e49eb52
c0f5e01dded221a720c2173447e936c1e1148928016187fa4e8ac8e3a087b4ee
8131924855c3926690be5745c37966c5bef10c9c851054fab7729fc7fb02ba13
09cda694bcb240c7b0742de73888b7ab55db4f29ee1c6c471f4b8982dc150f5d
3d0400fb45ebf52e42f40e3c6c3c246a6c1e1550f8b974b848f57a4294084162
dae07c0c93ddde9c93128b15ba4fd8ec83a07538d3b03eda7374cfcb5441c84f
dd7311a0428c78cec1db4fbca409094ab6694db68c03aa878f9f1872ecc6e1db
e8ed49650b42ebb3a251a7353809309e94f885316bf1b0153def1c180628cee4
2cb3478355fda005cf47b9c74d29944815892efe821a57b0974969939c106d09
dd7c962afea2752944885fdd3551a0a50fc3a58f676c1466f5fb71eda72d5a24
2de425eff8193440b8b171e724acec8404b9d81ec48600847946b2b828b494f0
SH256 hash:
551ef0181260a5ab5728a618c2e86443753aaeb425e6c3b1346dfb0a661c73af
MD5 hash:
3c7205139e6aabd7de040b15021c24ed
SHA1 hash:
e4c66e4ca1bb3b5488d7c4ba7fddc8cac118955f
Link:
https://www.unpac.me/results/0f07c339-b095-4b96-8569-ffeaf2a7de90/
SH256 hash:
e3242ac5afb7b2480d30f6fe5e9b24a04bf670a9e3aba45181a0137b58dca51b
MD5 hash:
aa54ca8bea243a8b2334172505e0ba66
SHA1 hash:
c0a280c634d786267197f25748bfa725e51d47ff
Link:
https://www.unpac.me/results/0f07c339-b095-4b96-8569-ffeaf2a7de90/
SH256 hash:
fac07af6f5233a55ff9c35de54a9048da45cb2185e48897aef01df96064e3473
MD5 hash:
f1b9a813ff23af35744eb07d42962ec4
SHA1 hash:
3e85e6cd9c329e28b6212e67176393f3fdc85265
Link:
https://www.unpac.me/results/0f07c339-b095-4b96-8569-ffeaf2a7de90/
SH256 hash:
9b4aee132a0228378d66a57fda3a2030952309ef74cf2db724ac916b04d8c034
MD5 hash:
93c6391d23c1aa1ed66fb13f82f2ee31
SHA1 hash:
220098c3047c32b51ae13a5cc1e9beeef3da6e18
Link:
https://www.unpac.me/results/0f07c339-b095-4b96-8569-ffeaf2a7de90/
SH256 hash:
a5b3f39420dfafa9d157f75e980c1fd8742ab42ec71d4170a8e1752589c5c83d
MD5 hash:
421d4235271bffd240fdacab7aef2072
SHA1 hash:
147e8565f1c5bf2983a22a6f0ff633b8258889ea
Link:
https://www.unpac.me/results/0f07c339-b095-4b96-8569-ffeaf2a7de90/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/a5b3f39420df/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
0.81
Link:
https://yomi.yoroi.company/submissions/a5b3f39420dfafa9d157f75e980c1fd8742ab42ec71d4170a8e1752589c5c83d

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
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Rule name:Skystars_Malware_Imphash
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Author:Skystars LightDefender
Description:imphash

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Cape
Cape
https://www.capesandbox.com/analysis/317571/

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