MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c25e2223ce02406f44264119d1cc1aec651d903991ecd91fb848a912fb1e349d. 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: c25e2223ce02406f44264119d1cc1aec651d903991ecd91fb848a912fb1e349d
SHA3-384 hash: 3455844ad53a18285644cb82aff33c899f50dff7415751ef78a49e7711147016526e7fcac1733996e5eb5c82bf32560c
SHA1 hash: 06b1de1a538a711c4b27a279e2170a255bee31d0
MD5 hash: dee95c99395c1d074e7f815b8cdd33cd
humanhash: low-speaker-jig-april
File name:KUWf9JS752FbEqN.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:1'035'776 bytes
First seen:2021-07-19 07:12:43 UTC
Last seen:2021-07-19 07:40:58 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'664 x AgentTesla, 19'478 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 24576:2wvDB7BPG8BPdOcl7jMIAWIYoaDx/9MriNAhIN0P:2wjP/PgyfEWqaxWeAhq0P
Threatray 6'576 similar samples on MalwareBazaar
TLSH T18125BFA1F11B69C4EC3743F658B9ED20365A7DA95DFE921C391AB82959B320310E7C0F
Reporter lowmal3
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
114
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
KUWf9JS752FbEqN.exe
Verdict:
Malicious activity
Analysis date:
2021-07-19 07:13:26 UTC
Tags:
trojan formbook stealer
Link:
https://app.any.run/tasks/4bee0545-03a1-43ac-817c-35e9b193faec

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/172487/
Detection(s):
SecuriteInfo.com.ArtemisDEE95C99395C.29063.22213.UNOFFICIAL
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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.
Malware family:
Formbook
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Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/5f55de95-0fcd-4382-add4-d4d389f12496
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/818094
Signature
C2 URLs / IPs found in malware configuration
Found malware configuration
Injects a PE file into a foreign processes
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)
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
System process connects to network (likely due to code injection or exploit)
Tries to detect virtualization through RDTSC time measurements
Uses netsh to modify the Windows network and firewall settings
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 450505 Sample: KUWf9JS752FbEqN.exe Startdate: 19/07/2021 Architecture: WINDOWS Score: 100 30 www.ashurmall.net 2->30 32 ashurmall.net 2->32 38 Found malware configuration 2->38 40 Malicious sample detected (through community Yara rule) 2->40 42 Yara detected FormBook 2->42 44 2 other signatures 2->44 11 KUWf9JS752FbEqN.exe 3 2->11         started        signatures3 process4 signatures5 52 Tries to detect virtualization through RDTSC time measurements 11->52 54 Injects a PE file into a foreign processes 11->54 14 KUWf9JS752FbEqN.exe 11->14         started        process6 signatures7 56 Modifies the context of a thread in another process (thread injection) 14->56 58 Maps a DLL or memory area into another process 14->58 60 Sample uses process hollowing technique 14->60 62 Queues an APC in another process (thread injection) 14->62 17 explorer.exe 14->17 injected process8 dnsIp9 28 www.id-mensagency.com 41.203.18.177, 49738, 80 xneeloZA South Africa 17->28 34 System process connects to network (likely due to code injection or exploit) 17->34 36 Uses netsh to modify the Windows network and firewall settings 17->36 21 netsh.exe 17->21         started        signatures10 process11 signatures12 46 Modifies the context of a thread in another process (thread injection) 21->46 48 Maps a DLL or memory area into another process 21->48 50 Tries to detect virtualization through RDTSC time measurements 21->50 24 cmd.exe 1 21->24         started        process13 process14 26 conhost.exe 24->26         started       
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/c25e2223ce02406f44264119d1cc1aec651d903991ecd91fb848a912fb1e349d/
Threat name:
ByteCode-MSIL.Spyware.Noon
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Status:
Malicious
First seen:
2021-07-19 07:13:03 UTC
AV detection:
11 of 46 (23.91%)
Threat level:
  2/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=yjpcei6oajag6rbgiem5dta25rsr3ebzshwnsh5yjcurf6y6gsoq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
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83fed765d229173fedc6811b521cebdfcec3342713679a57d49188ba554c00fb
Formbook
b03f6bc5eec0f24076b3ef2c761b21d75c489ad34c5f94dcffab6d2b4d65263f
Formbook
b8ad131dedee5c7f3164a25f907a69c6f90632f901ecf50a61aa7e31b4c8334e
Formbook
d0116b0ea676a655b1d55a2b7a79fb2585c1d04803e9d1d6f9cd1da15f789138
Formbook
e8baf97ad51faed006287d1f01f921df0f677d4f056d35697158d30aa24ace9b
Formbook
e8be28fabd7cdb2d4e96137dae73bd9b227a86b654c696e9fd401cb37ec68267
Formbook
f230480c3c0154a2f537f30f2f361bfa55d829264672998cd9131b8706161a9d
Formbook
f6b1a22c0cfc0c363bb163b7bd3236ee1dac2995a3511a6a941b7a7af656ba25
Formbook
f8ca257b6bbb8a0b617611a8ddb0068f056f3dc38eb525495978632b03964380
Formbook
+ 6'566 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook rat spyware stealer trojan
Link:
https://tria.ge/reports/210719-gqazkl75cn/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Deletes itself
Formbook Payload
Formbook
Malware Config
C2 Extraction:
http://www.dongshengjunyao.com/b2dn/
Unpacked files
SH256 hash:
83d9e44d9a311ea6fdbcbd09fdc816a2067806dcacf24beb5ee786191b1a3ea1
MD5 hash:
b1a7b752b6638ee03cffe5a1dde9213e
SHA1 hash:
52d215a173d2f293990f8c12fc7f4a86330a29cb
Link:
https://www.unpac.me/results/d86f03bd-7906-4261-b30a-43d0e7cd305e/
SH256 hash:
c25e2223ce02406f44264119d1cc1aec651d903991ecd91fb848a912fb1e349d
MD5 hash:
dee95c99395c1d074e7f815b8cdd33cd
SHA1 hash:
06b1de1a538a711c4b27a279e2170a255bee31d0
Link:
https://www.unpac.me/results/d86f03bd-7906-4261-b30a-43d0e7cd305e/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.65
Link:
https://yomi.yoroi.company/submissions/c25e2223ce02406f44264119d1cc1aec651d903991ecd91fb848a912fb1e349d

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
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 c25e2223ce02406f44264119d1cc1aec651d903991ecd91fb848a912fb1e349d

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/172487/

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