MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 af4f28ed9e5d8205220c60f42668e6576233f54885c63fcaf43c2315328f45f1. 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: 19


Intelligence 19 IOCs YARA 5 File information Comments
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SHA256 hash: af4f28ed9e5d8205220c60f42668e6576233f54885c63fcaf43c2315328f45f1
SHA3-384 hash: cf74fbd3ffeaafec3369feded46ed526a39b5def9008e3caf133a68d476b094eb1d4185d536351633a38f8a5f545c6fb
SHA1 hash: b23e75b94b84b31edaa0793b1228c444254effa2
MD5 hash: 312f45637432b1efec858ed32bdef462
humanhash: idaho-finch-harry-winter
File name:pzUHRx6alP7phBn.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:585'216 bytes
First seen:2024-09-16 13:13:03 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'737 x AgentTesla, 19'596 x Formbook, 12'241 x SnakeKeylogger)
ssdeep 6144:ohYWUks3Gmjob1xiDu8lJ/NY9m6xYcqhB01kDryaKngqBi+/baDlXuS+hwtTuKS6:6cSxiDUQcqTKtBF/kN2mflW+X0cV
TLSH T1ABC4125855749703F0AB5BF806A0E17483B8FEAEE312D7A68FD54CEBBD50B101E4139A
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) (4504/4/1)
2.0% (.ICL) Windows Icons Library (generic) (2059/9)
Magika pebin
File icon (PE):PE icon
dhash icon c412f1d0ccf010c8 (2 x Formbook, 2 x SnakeKeylogger, 1 x RemcosRAT)
Reporter James_inthe_box
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
396
Origin country :
US US
Vendor Threat Intelligence
Malware family:
formbook
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ID:
1
File name:
pzUHRx6alP7phBn.exe
Verdict:
Malicious activity
Analysis date:
2024-09-17 11:53:03 UTC
Tags:
formbook xloader
Link:
https://app.any.run/tasks/467c3d41-e694-4b74-b565-4012ebca7cf3

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.MalwareX-gen.1575.32561.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
90.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=66e82ee02ebf76853bd5d8a9
Tags:
Stealth Swotter
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
packed
Link:
https://www.filescan.io/uploads/66e82ee53c9389b729b8853e/reports/231c7d1c-acc2-4972-9d26-38118092a66f/overview
Verdict:
Malicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/af4f28ed9e5d8205220c60f42668e6576233f54885c63fcaf43c2315328f45f1
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/ec90b7a5-a6b4-4f71-abfe-8ea87751bd17
Result
Threat name:
FormBook
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Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1511876
Signature
.NET source code contains potential unpacker
AI detected suspicious sample
C2 URLs / IPs found in malware configuration
Found direct / indirect Syscall (likely to bypass EDR)
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 domain / URL
Multi AV Scanner detection for submitted file
Performs DNS queries to domains with low reputation
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Sigma detected: CMSTP Execution Process Creation
Switches to a custom stack to bypass stack traces
Tries to detect virtualization through RDTSC time measurements
Tries to resolve many domain names, but no domain seems valid
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1511876 Sample: pzUHRx6alP7phBn.exe Startdate: 16/09/2024 Architecture: WINDOWS Score: 100 29 www.-9way.xyz 2->29 31 www.uneytozgur.online 2->31 33 9 other IPs or domains 2->33 35 Multi AV Scanner detection for domain / URL 2->35 37 Found malware configuration 2->37 39 Malicious sample detected (through community Yara rule) 2->39 43 10 other signatures 2->43 11 pzUHRx6alP7phBn.exe 3 2->11         started        signatures3 41 Performs DNS queries to domains with low reputation 29->41 process4 file5 27 C:\Users\user\...\pzUHRx6alP7phBn.exe.log, ASCII 11->27 dropped 53 Tries to detect virtualization through RDTSC time measurements 11->53 55 Injects a PE file into a foreign processes 11->55 57 Switches to a custom stack to bypass stack traces 11->57 15 pzUHRx6alP7phBn.exe 11->15         started        signatures6 process7 signatures8 59 Modifies the context of a thread in another process (thread injection) 15->59 61 Maps a DLL or memory area into another process 15->61 63 Sample uses process hollowing technique 15->63 65 2 other signatures 15->65 18 explorer.exe 112 7 15->18 injected process9 process10 20 cmstp.exe 18->20         started        signatures11 45 Modifies the context of a thread in another process (thread injection) 20->45 47 Maps a DLL or memory area into another process 20->47 49 Tries to detect virtualization through RDTSC time measurements 20->49 51 Switches to a custom stack to bypass stack traces 20->51 23 cmd.exe 1 20->23         started        process12 process13 25 conhost.exe 23->25         started       
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/af4f28ed9e5d8205220c60f42668e6576233f54885c63fcaf43c2315328f45f1
Detection:
formbook
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Link:
https://mwdb.cert.pl/sample/af4f28ed9e5d8205220c60f42668e6576233f54885c63fcaf43c2315328f45f1/
Threat name:
Win32.Backdoor.FormBook
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Status:
Malicious
First seen:
2024-09-15 19:44:00 UTC
File Type:
PE (.Net Exe)
Extracted files:
9
AV detection:
20 of 24 (83.33%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=v5hsr3m6lwbakiqmmd2cm2hgk5rdh5kiqxdd7sxuhqrrkmupixyq._file
Verdict:
malicious
Label(s):
formbook
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Result
Malware family:
formbook
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Score:
  10/10
Tags:
family:formbook campaign:b31a discovery rat spyware stealer trojan
Link:
https://tria.ge/reports/240916-qf4zvazaqk/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Deletes itself
Formbook payload
Formbook
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/f20dc503-44fe-4387-93a2-7112cfa3190b
Unpacked files
SH256 hash:
c83c0a367712867b960ce8d742a57cfe6231d65cfe5eb14cdcced497d77fcd65
MD5 hash:
3abd239253118b6d0a823b9efd1ca97c
SHA1 hash:
1da5c763b07be907a24dc57d3d22e278ca9be6ad
Detections:
FormBook
Create hunting rule
win_formbook_g0
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win_formbook_auto
Create hunting rule
win_formbook_w0
Create hunting rule
Formbook
Create hunting rule
Link:
https://www.unpac.me/results/75e07ceb-c8c3-421f-82f4-a1cfa8bc2b1d/
Parent samples :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 hash:
1b727719d548c93b677a6e55184ae74bc4a85e2e217289634f563516327e8c0d
MD5 hash:
f971f6bb7308654f0013bfc2622b5399
SHA1 hash:
ddca047095e2c0160bed312c9447f74b729bd111
Link:
https://www.unpac.me/results/75e07ceb-c8c3-421f-82f4-a1cfa8bc2b1d/
Parent samples :
67f4b6cba186520b5247fa0ec23e129dd20c51640662108c2b9db61cf968f17d
bc5ee788c33389a426c9b5b10405a41a83f6875864bf09b0de6df15ab88cfbda
3bd3c438394939146b7e081e05cd0973bcc7c7d01f624502f70ff7f7da986a41
SH256 hash:
07a030487ecdf914910a79efb17444a150804b4fd0a226ffd0fa7da418932094
MD5 hash:
2222141ef9d99068f765e5e996bc4d61
SHA1 hash:
1f29a438baed552a572b8cd0921bb50143ea44c6
Detections:
SUSP_OBF_NET_ConfuserEx_Name_Pattern_Jan24
Create hunting rule
SUSP_OBF_NET_Reactor_Indicators_Jan24
Create hunting rule
Link:
https://www.unpac.me/results/75e07ceb-c8c3-421f-82f4-a1cfa8bc2b1d/
SH256 hash:
af4f28ed9e5d8205220c60f42668e6576233f54885c63fcaf43c2315328f45f1
MD5 hash:
312f45637432b1efec858ed32bdef462
SHA1 hash:
b23e75b94b84b31edaa0793b1228c444254effa2
Link:
https://www.unpac.me/results/75e07ceb-c8c3-421f-82f4-a1cfa8bc2b1d/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/af4f28ed9e5d/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Formbook
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/af4f28ed9e5d8205220c60f42668e6576233f54885c63fcaf43c2315328f45f1

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:NET
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Author:malware-lu
Rule name:NETexecutableMicrosoft
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Author:malware-lu
Rule name:pe_imphash
Create hunting rule
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.

Malspam

Formbook

Executable exe af4f28ed9e5d8205220c60f42668e6576233f54885c63fcaf43c2315328f45f1

(this sample)

  
Delivery method
Distributed via e-mail attachment

BLint

The following table provides more information about this file using BLint. BLint is a Binary Linter to check the security properties, and capabilities in executables.

Findings
IDTitleSeverity
CHECK_AUTHENTICODEMissing Authenticodehigh
CHECK_DLL_CHARACTERISTICSMissing dll Security Characteristics (HIGH_ENTROPY_VA)high

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