MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 ff25677389d599682cc411460963f6adbff3879c2f2d3d7239312acfd57f42fe. 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: 11


Intelligence 11 IOCs YARA 2 File information Comments
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SHA256 hash: ff25677389d599682cc411460963f6adbff3879c2f2d3d7239312acfd57f42fe
SHA3-384 hash: 2db8e11161d45ea5a14085bb6e26e50dfc1ad884d5eb636b0dc0735176be8bf1f3681f99ce2949467a239c8cd1d0ad3d
SHA1 hash: 580269f22bc89d00b20d2d5e6efb1345e536df3d
MD5 hash: 34680f30f15382ec6f78ac2e6a8758da
humanhash: india-missouri-bravo-xray
File name:34680f30f15382ec6f78ac2e6a8758da.exe
Download: download sample
Signature Formbook
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File size:2'349'376 bytes
First seen:2022-11-11 10:20:38 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'740 x AgentTesla, 19'600 x Formbook, 12'241 x SnakeKeylogger)
ssdeep 49152:Tyx0KSKr+tg/B5IuIsuxaV2T7y+eck0s1YaJRem+D6n6srjbGVKPzS1:OCvKr+uJ5IuUxm2LtBs1YkReDY9bk+S1
TLSH T19DB53352B3D46D92E9072D3158CDD72470389DC9B0A6A68CB92CFBD912F0362702FB9D
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) (4505/5/1)
2.0% (.EXE) Win16/32 Executable Delphi generic (2072/23)
File icon (PE):PE icon
dhash icon 82b29c8e8eb2869e (1 x Formbook, 1 x RemcosRAT)
Reporter abuse_ch
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
172
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
formbook
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ID:
1
File name:
PO2008095.xls
Verdict:
Malicious activity
Analysis date:
2022-11-11 10:12:05 UTC
Tags:
macros opendir exploit cve-2017-11882 loader formbook trojan stealer
Link:
https://app.any.run/tasks/6d847198-3447-4f1c-a9fa-89b44da8af57

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/332413/
Detection(s):
SecuriteInfo.com.UntrustedCertificate.Aichost.UNOFFICIAL
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Result
Verdict:
Clean
Maliciousness:

Behaviour
Creating a window
Сreating synchronization primitives
Launching a process
Creating a process with a hidden window
Sending a custom TCP request
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
overlay packed
Link:
https://www.filescan.io/uploads/636e221382dd9f2e265389e5/reports/974a723a-4dcc-4ef6-9c4c-dad5b89ebe48/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:
Suspicious
Link:
https://analyze.intezer.com/analyses/58c91f00-d5c2-4dfa-a8fd-737eee5b94c6
Result
Threat name:
FormBook
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Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1111183
Signature
.NET source code contains potential unpacker
.NET source code contains very large array initializations
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Encrypted powershell cmdline option found
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
Modifies the prolog of user mode functions (user mode inline hooks)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Tries to detect virtualization through RDTSC time measurements
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 743878 Sample: Br0zep0yVY.exe Startdate: 11/11/2022 Architecture: WINDOWS Score: 100 42 Malicious sample detected (through community Yara rule) 2->42 44 Antivirus detection for URL or domain 2->44 46 Multi AV Scanner detection for submitted file 2->46 48 6 other signatures 2->48 10 Br0zep0yVY.exe 1 7 2->10         started        process3 file4 36 C:\Users\user\AppData\Roaming\...\Ynhycd.exe, PE32 10->36 dropped 38 C:\Users\user\...\Ynhycd.exe:Zone.Identifier, ASCII 10->38 dropped 40 C:\Users\user\AppData\...\Br0zep0yVY.exe.log, ASCII 10->40 dropped 50 Encrypted powershell cmdline option found 10->50 52 Tries to detect virtualization through RDTSC time measurements 10->52 54 Injects a PE file into a foreign processes 10->54 14 Br0zep0yVY.exe 10->14         started        17 powershell.exe 16 10->17         started        19 Br0zep0yVY.exe 10->19         started        21 Br0zep0yVY.exe 10->21         started        signatures5 process6 signatures7 62 Maps a DLL or memory area into another process 14->62 23 explorer.exe 14->23 injected 25 conhost.exe 17->25         started        process8 process9 27 Ynhycd.exe 3 23->27         started        30 Ynhycd.exe 2 23->30         started        signatures10 56 Multi AV Scanner detection for dropped file 27->56 58 Machine Learning detection for dropped file 27->58 60 Encrypted powershell cmdline option found 27->60 32 powershell.exe 11 27->32         started        process11 process12 34 conhost.exe 32->34         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/ff25677389d599682cc411460963f6adbff3879c2f2d3d7239312acfd57f42fe/
Threat name:
Win32.Trojan.FormBook
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Status:
Malicious
First seen:
2022-11-11 10:21:15 UTC
File Type:
PE (.Net Exe)
Extracted files:
3
AV detection:
20 of 26 (76.92%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=74swo44j2wmwqlgecfdasy7wvw77hb44f4wt24rzgevm7vl7il7a._file
Verdict:
malicious
Label(s):
formbook
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cobaltstrike
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masslogger
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Result
Malware family:
formbook
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Score:
  10/10
Tags:
family:formbook campaign:hh20 persistence rat spyware stealer trojan
Link:
https://tria.ge/reports/221111-mdn9tshc5x/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Adds Run key to start application
Checks computer location settings
Formbook payload
Formbook
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/3bda9b64-7d18-45d9-878c-32cff99e09db
Unpacked files
SH256 hash:
4623185e91e68a738fa631eae6b1210ea4fa592d83d2ecaecf617caebfa3a27f
MD5 hash:
a18b523811a83aff82c1f53aea354a89
SHA1 hash:
792eceb025f5a0f758d25297342bf41e9c42d81f
Link:
https://www.unpac.me/results/bc420c46-e911-4ad6-a6e6-4888761ddab7/
SH256 hash:
ff25677389d599682cc411460963f6adbff3879c2f2d3d7239312acfd57f42fe
MD5 hash:
34680f30f15382ec6f78ac2e6a8758da
SHA1 hash:
580269f22bc89d00b20d2d5e6efb1345e536df3d
Link:
https://www.unpac.me/results/bc420c46-e911-4ad6-a6e6-4888761ddab7/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
iSpy Keylogger
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/ff25677389d599682cc411460963f6adbff3879c2f2d3d7239312acfd57f42fe

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.

Web download

Formbook

Executable exe ff25677389d599682cc411460963f6adbff3879c2f2d3d7239312acfd57f42fe

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/2404941/
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/332413/

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