MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4a802bd99bb9503b36b5bca07fdf9482e5ef52d10cfc136dbbc44ae55a79c187. 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 7 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 4a802bd99bb9503b36b5bca07fdf9482e5ef52d10cfc136dbbc44ae55a79c187
SHA3-384 hash: e25fed5df77931ea2809a1dca1e5e71bb46b36591ebe56a6648cd155c6362ce5fd77cf6b8b168cb384186a6e688bd51d
SHA1 hash: bf3d47e6fbf5b810dc7b4d2488b2ef887e3f2072
MD5 hash: 8ed9e449773bebcce7cb179611f55d53
humanhash: kilo-cold-april-quebec
File name:2Z5JoDGd5T1RuZC.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:743'944 bytes
First seen:2024-02-21 13:26:46 UTC
Last seen:2024-02-21 15:22:57 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'740 x AgentTesla, 19'600 x Formbook, 12'241 x SnakeKeylogger)
ssdeep 12288:kMu6MZXW/3ZDM+d/zOfHmuTtA1l0/nPwkvhoGkmPrAfS75F1/B1fkR:FMZG/3ZDREHm6A1l0n4qo7qr7/z6
Threatray 879 similar samples on MalwareBazaar
TLSH T140F4125433AC1923DAFE55B6A0A461652BF0BE423922F3CC4CCCB4DE5AE5FC01A25B57
TrID 63.0% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
11.2% (.SCR) Windows screen saver (13097/50/3)
9.0% (.EXE) Win64 Executable (generic) (10523/12/4)
5.6% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
3.8% (.EXE) Win32 Executable (generic) (4504/4/1)
File icon (PE):PE icon
dhash icon 1ce190f4e0663807 (4 x AgentTesla, 2 x Formbook, 1 x njrat)
Reporter abuse_ch
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
418
Origin country :
NL NL
Vendor Threat Intelligence
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/477305/
Detection(s):
Porcupine.Malware.58887.UNOFFICIAL
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Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Unauthorized injection to a recently created process
Restart of the analyzed sample
Creating a file
Launching a process
Сreating synchronization primitives
Creating a file in the %AppData% subdirectories
Reading critical registry keys
Launching cmd.exe command interpreter
Creating a file in the %temp% directory
Searching for synchronization primitives
Unauthorized injection to a system process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
overlay packed
Link:
https://www.filescan.io/uploads/65d5fa31c5e1a083fbf3f53c/reports/cfe2c349-2b8c-45eb-8786-5a17ea737171/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/4a802bd99bb9503b36b5bca07fdf9482e5ef52d10cfc136dbbc44ae55a79c187
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
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/12394366-cdc8-4927-9413-977a11f4dd52
Result
Threat name:
FormBook, PureLog Stealer
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1396176
Signature
.NET source code contains method to dynamically call methods (often used by packers)
.NET source code contains potential unpacker
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Detected FormBook malware
Found 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 submitted file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Sigma detected: Steal Google chrome login data
Snort IDS alert for network traffic
System process connects to network (likely due to code injection or exploit)
Tries to detect virtualization through RDTSC time measurements
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 AntiVM3
Yara detected FormBook
Yara detected PureLog Stealer
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1396176 Sample: 2Z5JoDGd5T1RuZC.exe Startdate: 21/02/2024 Architecture: WINDOWS Score: 100 45 www.westmobileautodeatailers.online 2->45 47 www.teeleads.com 2->47 49 9 other IPs or domains 2->49 53 Snort IDS alert for network traffic 2->53 55 Found malware configuration 2->55 57 Malicious sample detected (through community Yara rule) 2->57 59 11 other signatures 2->59 11 2Z5JoDGd5T1RuZC.exe 3 2->11         started        signatures3 process4 signatures5 71 Tries to detect virtualization through RDTSC time measurements 11->71 73 Injects a PE file into a foreign processes 11->73 14 2Z5JoDGd5T1RuZC.exe 11->14         started        process6 signatures7 75 Modifies the context of a thread in another process (thread injection) 14->75 77 Maps a DLL or memory area into another process 14->77 79 Sample uses process hollowing technique 14->79 81 Queues an APC in another process (thread injection) 14->81 17 explorer.exe 95 1 14->17 injected process8 dnsIp9 39 www.teeleads.com 23.248.232.13, 49732, 49733, 80 XIAOZHIYUN1-AS-APICIDCNETWORKUS United States 17->39 41 directoriokansascity.com 209.59.139.151, 49734, 49735, 80 LIQUIDWEBUS United States 17->41 43 5 other IPs or domains 17->43 51 System process connects to network (likely due to code injection or exploit) 17->51 21 cscript.exe 18 17->21         started        signatures10 process11 file12 33 C:\Users\user\AppData\...\928logrv.ini, data 21->33 dropped 35 C:\Users\user\AppData\...\928logri.ini, data 21->35 dropped 61 Detected FormBook malware 21->61 63 Tries to steal Mail credentials (via file / registry access) 21->63 65 Tries to harvest and steal browser information (history, passwords, etc) 21->65 67 5 other signatures 21->67 25 cmd.exe 2 21->25         started        29 firefox.exe 21->29         started        signatures13 process14 file15 37 C:\Users\user\AppData\Local\Temp\DB1, SQLite 25->37 dropped 69 Tries to harvest and steal browser information (history, passwords, etc) 25->69 31 conhost.exe 25->31         started        signatures16 process17
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/4a802bd99bb9503b36b5bca07fdf9482e5ef52d10cfc136dbbc44ae55a79c187
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/4a802bd99bb9503b36b5bca07fdf9482e5ef52d10cfc136dbbc44ae55a79c187/
Threat name:
ByteCode-MSIL.Trojan.SnakeKeyLogger
Create hunting rule
Status:
Malicious
First seen:
2024-02-20 23:08:32 UTC
File Type:
PE (.Net Exe)
Extracted files:
12
AV detection:
20 of 24 (83.33%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=jkacxwm3xfidwnvvxsqh7x4uqls66uwrbt6bg3n3yrfokwtzygdq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
1689e8640744d9c02fb7afae8b9d62cc9c464d12ee33a7ef65f72e8840d47733
Formbook
30cf6019932ac33f1a53c417f1d562dd0ee0ef1588500962c6edafec3a340a32
Formbook
3f71cd633e4008724884843131ed3d03c8d6613882f81a8afc615ad30f841dfe
Formbook
78854920bdb00256902029bebce69365c42a97b0431ff35c48f6faf5951f24e3
Formbook
78fa533a638b518f838be240f431580d19df296894c35a0cfb3f652312d7d2aa
Formbook
7f2b6abae34c616082bd23cc868fb85c63ac3b2db5ee103886c1400b3d43f7b4
Formbook
+ 869 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:cz30 rat spyware stealer trojan
Link:
https://tria.ge/reports/240221-qp589sge44/
Behaviour
Modifies Internet Explorer settings
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Reads user/profile data of web browsers
Formbook payload
Formbook
Unpacked files
SH256 hash:
fea6d260f190f9c12fe3e5a7b44fa44eb962d64c827cac3c43ccbff0d6f7ef29
MD5 hash:
12b26db7b06bf7bf6dc2b943eccac096
SHA1 hash:
49a957e558b552805e69cfd3d1bff9c986ef7348
Detections:
FormBook
Create hunting rule
win_formbook_w0
Create hunting rule
win_formbook_auto
Create hunting rule
win_formbook_g0
Create hunting rule
Formbook
Create hunting rule
Link:
https://www.unpac.me/results/03a9d9d3-5068-4b04-96dc-78085bdd881d/
Parent samples :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 hash:
72638f4b30cc9dab51d31216991957bf1cd118b8a8743227b3e8f9c4805f7628
MD5 hash:
2a8240bba06e832ee5d136a0a7e5b5b9
SHA1 hash:
de49d9b33004a4a622a4279b3ee2b3e3e5cd012b
Link:
https://www.unpac.me/results/03a9d9d3-5068-4b04-96dc-78085bdd881d/
SH256 hash:
a9d6ce2ee8513506bc95d83b872255420c7c0098689deda1b0d32a654283fe98
MD5 hash:
df6f2054428453ef1363a7f8d2f1a77c
SHA1 hash:
a0ff2189aea6882e5227a79443ba70566d97ddda
Link:
https://www.unpac.me/results/03a9d9d3-5068-4b04-96dc-78085bdd881d/
SH256 hash:
ec592062c41d26d7046ab135fbabaf80e69900ba940ca654261cda17109f8769
MD5 hash:
09f7fb78314d30bf7c69d72caa9da978
SHA1 hash:
5536e0f86fe6e36f11e5ba03a8f559675dd82f30
Link:
https://www.unpac.me/results/03a9d9d3-5068-4b04-96dc-78085bdd881d/
SH256 hash:
42e5bbee4b498550f505c1232326adbf9d5d23c7e90174eb142b4963b879fe7b
MD5 hash:
100a8095e042378d2c227eb0ff37b6d4
SHA1 hash:
32c4a6457d7c01e9e135c3750d571114bc0ef3a0
Link:
https://www.unpac.me/results/03a9d9d3-5068-4b04-96dc-78085bdd881d/
SH256 hash:
4a802bd99bb9503b36b5bca07fdf9482e5ef52d10cfc136dbbc44ae55a79c187
MD5 hash:
8ed9e449773bebcce7cb179611f55d53
SHA1 hash:
bf3d47e6fbf5b810dc7b4d2488b2ef887e3f2072
Detections:
INDICATOR_KB_CERT_7c1118cbbadc95da3752c46e47a27438
Create hunting rule
Link:
https://www.unpac.me/results/03a9d9d3-5068-4b04-96dc-78085bdd881d/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/4a802bd99bb9/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/4a802bd99bb9503b36b5bca07fdf9482e5ef52d10cfc136dbbc44ae55a79c187

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:INDICATOR_KB_CERT_7c1118cbbadc95da3752c46e47a27438
Create hunting rule
Author:ditekSHen
Description:Detects executables signed with stolen, revoked or invalid certificates
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

Formbook

Executable exe 4a802bd99bb9503b36b5bca07fdf9482e5ef52d10cfc136dbbc44ae55a79c187

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/477305/

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