MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c121eae871db09a878d790146f551a88f652fa3c0b56627674dc5ba9f05e04bc. 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: 17


Intelligence 17 IOCs YARA 18 File information Comments
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SHA256 hash: c121eae871db09a878d790146f551a88f652fa3c0b56627674dc5ba9f05e04bc
SHA3-384 hash: dc831627e9a087e87aad0581554998275178973d73d24e356f27e6e943c63acda9d212b6ffabd562095b39b9416fa5d2
SHA1 hash: 3b0bb6fab8077c13633b9cdab84a42d981fb59b5
MD5 hash: b51f67297d5dd494ed1acecf85c989f8
humanhash: utah-march-comet-four
File name:SecuriteInfo.com.FileRepMalware.7722.9222
Download: download sample
Signature Formbook
Create hunting rule
File size:305'277 bytes
First seen:2023-09-21 11:41:23 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 61259b55b8912888e90f516ca08dc514 (1'059 x Formbook, 741 x AgentTesla, 431 x GuLoader)
ssdeep 6144:/Ya6PK+Suas+y4T/TS6c31TiGRMx5rKX4u18Z4ekSiIGEBqeffdgvy6mUao:/YRK+SRsT4TMd1RgG4i8Z4elGEY2WsU1
Threatray 2'629 similar samples on MalwareBazaar
TLSH T15D5412507BB8C277DD924AB2283E57394FF2A82415956B4B57102B2C7D72AC2872F373
TrID 47.3% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13)
15.9% (.EXE) Win64 Executable (generic) (10523/12/4)
9.9% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
7.6% (.EXE) Win16 NE executable (generic) (5038/12/1)
6.8% (.EXE) Win32 Executable (generic) (4505/5/1)
File icon (PE):PE icon
dhash icon b2a89c96a2cada72 (2'283 x Formbook, 981 x Loki, 803 x AgentTesla)
Reporter SecuriteInfoCom
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
308
Origin country :
FR FR
Vendor Threat Intelligence
Malware family:
formbook
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ID:
1
File name:
SecuriteInfo.com.FileRepMalware.7722.9222
Verdict:
Malicious activity
Analysis date:
2023-09-21 11:43:47 UTC
Tags:
formbook xloader stealer spyware
Link:
https://app.any.run/tasks/80772dad-37d8-4410-849d-f0e7dc72398f

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Formbook
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Link:
https://www.capesandbox.com/analysis/450342/
Detection(s):
SecuriteInfo.com.FileRepMalware.7722.9222.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file in the %temp% directory
Creating a window
Creating a process from a recently created file
Launching a process
Сreating synchronization primitives
Launching cmd.exe command interpreter
DNS request
Setting browser functions hooks
Unauthorized injection to a recently created process by context flags manipulation
Unauthorized injection to a system process
Unauthorized injection to a browser process
Gathering data
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
control lolbin masquerade overlay packed shell32
Link:
https://www.filescan.io/uploads/650c2c0c988a26b6d96f5d90/reports/11c392bc-1e08-4338-96a8-be2306dbf903/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/c121eae871db09a878d790146f551a88f652fa3c0b56627674dc5ba9f05e04bc
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/97f8d5d4-fa4c-4a38-9420-427a8fe63fda
Result
Threat name:
FormBook, NSISDropper
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Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1312225
Signature
Antivirus detection for dropped file
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Found evasive API chain (may stop execution after reading information in the PEB, e.g. number of processors)
Found malware configuration
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 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
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
Yara detected FormBook
Yara detected NSISDropper
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1312225 Sample: SecuriteInfo.com.FileRepMal... Startdate: 21/09/2023 Architecture: WINDOWS Score: 100 47 Snort IDS alert for network traffic 2->47 49 Found malware configuration 2->49 51 Malicious sample detected (through community Yara rule) 2->51 53 7 other signatures 2->53 11 SecuriteInfo.com.FileRepMalware.7722.9222.exe 18 2->11         started        process3 file4 31 C:\Users\user\AppData\...\wirybscjwh.exe, PE32 11->31 dropped 14 wirybscjwh.exe 11->14         started        process5 signatures6 63 Antivirus detection for dropped file 14->63 65 Machine Learning detection for dropped file 14->65 67 Found evasive API chain (may stop execution after reading information in the PEB, e.g. number of processors) 14->67 69 2 other signatures 14->69 17 wirybscjwh.exe 14->17         started        process7 signatures8 39 Modifies the context of a thread in another process (thread injection) 17->39 41 Maps a DLL or memory area into another process 17->41 43 Sample uses process hollowing technique 17->43 45 Queues an APC in another process (thread injection) 17->45 20 explorer.exe 7 12 17->20 injected process9 dnsIp10 33 www.fzturf.com 82.221.141.60, 49740, 80 THORDC-ASIS Iceland 20->33 35 b2b-scaling.com 15.197.142.173, 49736, 80 TANDEMUS United States 20->35 37 13 other IPs or domains 20->37 55 System process connects to network (likely due to code injection or exploit) 20->55 24 cmmon32.exe 20->24         started        signatures11 process12 signatures13 57 Modifies the context of a thread in another process (thread injection) 24->57 59 Maps a DLL or memory area into another process 24->59 61 Tries to detect virtualization through RDTSC time measurements 24->61 27 cmd.exe 1 24->27         started        process14 process15 29 conhost.exe 27->29         started       
Detection:
formbook
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Link:
https://mwdb.cert.pl/sample/c121eae871db09a878d790146f551a88f652fa3c0b56627674dc5ba9f05e04bc/
Threat name:
Win32.Trojan.Swotter
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Status:
Malicious
First seen:
2023-09-21 09:03:20 UTC
File Type:
PE (Exe)
Extracted files:
3
AV detection:
21 of 23 (91.30%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=yeq6v2dr3me2q6gxsakg6vi2rd3ff6r4bnlge5tu3rn2t4c6as6a._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
1a4a833905ed2b06f990054eee77c7f92d536d52797c6a18de6d1358e25e8e03
Formbook
23a0504b8ac3cb1b913d15da848866607a4c617b8bbb5555a71962a6cffadeed
Formbook
328dcb82382c5fb34a7f5a4892cfbdeec6e990551f3ebdcdcfec98e70b0b0327
Formbook
3fc5cc5b1cbf56ae33c6bc87d39c58a0e034f21ddb7c999a7d505b0044b2e85f
Formbook
4a1e3a03026f57a6364b645bc8e05e1d7cc9d0fe8fe7ddbf6eb57ee4288fbb57
Formbook
9bc85e2d8b9379ab4b4a7a165602aa01a3251bd131a10d3cc67f494c3a46aced
Formbook
ab81345f141fa4d777d142a4f8367c53e9840897bc2b4c3299a4f6696a46296d
Formbook
b2d76e91d736201b7e8fb9780594693cfc3106285a4886e9b40007fdd7e56359
Formbook
e3643d141c0e87b3304f3b015f1e8dbbbe273e9a8bb93906991fe61a3073f891
Formbook
+ 2'619 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:sy22 rat spyware stealer trojan
Link:
https://tria.ge/reports/230921-nt1hgahg26/
Behaviour
Enumerates system info in registry
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Executes dropped EXE
Loads dropped DLL
Formbook payload
Formbook
Unpacked files
SH256 hash:
c3bca399df18104cf411227ac1e92f422ed40ee71c43764d452a514c718fa2f4
MD5 hash:
46b193d5f704cd1a0aadb11ee569797e
SHA1 hash:
7cd6f0a405361111a11935961a8e7d8e12c425c9
Link:
https://www.unpac.me/results/8e969588-256c-477e-910d-b31f65804398/
SH256 hash:
c121eae871db09a878d790146f551a88f652fa3c0b56627674dc5ba9f05e04bc
MD5 hash:
b51f67297d5dd494ed1acecf85c989f8
SHA1 hash:
3b0bb6fab8077c13633b9cdab84a42d981fb59b5
Link:
https://www.unpac.me/results/8e969588-256c-477e-910d-b31f65804398/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/c121eae871db/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/c121eae871db09a878d790146f551a88f652fa3c0b56627674dc5ba9f05e04bc

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:crime_win32_ransom_avaddon_1
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Author:@VK_Intel
Description:Detects Avaddon ransomware
Reference:https://twitter.com/VK_Intel/status/1300944441390370819
Rule name:DebuggerCheck__GlobalFlags
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Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerCheck__QueryInfo
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerHiding__Active
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerHiding__Thread
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:maldoc_find_kernel32_base_method_1
Create hunting rule
Author:Didier Stevens (https://DidierStevens.com)
Rule name:maldoc_getEIP_method_1
Create hunting rule
Author:Didier Stevens (https://DidierStevens.com)
Rule name:MD5_Constants
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Author:phoul (@phoul)
Description:Look for MD5 constants
Rule name:meth_get_eip
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Author:Willi Ballenthin
Rule name:meth_stackstrings
Create hunting rule
Author:Willi Ballenthin
Rule name:RIPEMD160_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for RIPEMD-160 constants
Rule name:SEH__vectored
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:SHA1_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for SHA1 constants
Rule name:shellcode
Create hunting rule
Author:nex
Description:Matched shellcode byte patterns
Rule name:Windows_Trojan_Formbook
Create hunting rule
Author:@malgamy12
Rule name:Windows_Trojan_Formbook_1112e116
Create hunting rule
Author:Elastic Security
Rule name:win_formbook_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:Detects win.formbook.
Rule name:win_formbook_w0
Create hunting rule
Author:@malgamy12

File information

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

Web download

Formbook

Executable exe c121eae871db09a878d790146f551a88f652fa3c0b56627674dc5ba9f05e04bc

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/2712722/
  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/2712814/
Cape
Cape
https://www.capesandbox.com/analysis/450342/

Comments