MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b0cfa1848c7b08eb881e615731493df57963468fa3fb461ebf1468271dd17a14. 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: 14


Intelligence 14 IOCs YARA 3 File information Comments
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SHA256 hash: b0cfa1848c7b08eb881e615731493df57963468fa3fb461ebf1468271dd17a14
SHA3-384 hash: a566aaaf87d53b038918e2674497d1485cb803dac43b9ef6bdf3e12873a1b3af8761c59cd303f45a4d8b38b8bb67e68c
SHA1 hash: c05059aa66ebd5eefe06f49e889f178aafebf5a1
MD5 hash: 94abfdf47572a6023f28be8b72f2fb74
humanhash: foxtrot-bacon-stairway-fish
File name:villarzx.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:415'744 bytes
First seen:2021-10-20 15:46:30 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'658 x AgentTesla, 19'469 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 6144:OaDH3SWaWBa6irJ741J9DxKVi51hX9IYQEKVy6HsPDRr6K8kqP6bLn:HDHi6a6irJS9DxKVI9YHMUKK6
Threatray 10'698 similar samples on MalwareBazaar
TLSH T19094F12172B8DD16C1BD5B3AC8AE540083F8A8037422DB1E7ED532ED595A7E10D26BDF
Reporter James_inthe_box
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
181
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Formbook
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Link:
https://www.capesandbox.com/analysis/198865/
Detection(s):
SecuriteInfo.com.Trojan.PWS.Maria.3.10735.14132.UNOFFICIAL
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Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Launching a process
Creating a file in the %temp% directory
Delayed writing of the file
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
obfuscated packed
Link:
https://www.filescan.io/uploads/617039faa9d585e6d52f6f92/reports/67b4099b-7793-4099-945f-bafa3abdfb71/overview
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/6553541c-02ad-4793-84b6-b9c7175b86f6
Result
Threat name:
FormBook
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Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/874001
Signature
.NET source code contains potential unpacker
C2 URLs / IPs found in malware configuration
Found malware configuration
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
Self deletion via cmd delete
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
System process connects to network (likely due to code injection or exploit)
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to detect virtualization through RDTSC time measurements
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 506425 Sample: villarzx.exe Startdate: 20/10/2021 Architecture: WINDOWS Score: 100 40 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->40 42 Found malware configuration 2->42 44 Malicious sample detected (through community Yara rule) 2->44 46 8 other signatures 2->46 9 villarzx.exe 3 2->9         started        process3 file4 26 C:\Users\user\AppData\...\villarzx.exe.log, ASCII 9->26 dropped 48 Tries to detect virtualization through RDTSC time measurements 9->48 13 villarzx.exe 9->13         started        signatures5 process6 signatures7 50 Modifies the context of a thread in another process (thread injection) 13->50 52 Maps a DLL or memory area into another process 13->52 54 Sample uses process hollowing technique 13->54 56 Queues an APC in another process (thread injection) 13->56 16 raserver.exe 13->16         started        19 explorer.exe 13->19 injected process8 dnsIp9 30 Self deletion via cmd delete 16->30 32 Modifies the context of a thread in another process (thread injection) 16->32 34 Maps a DLL or memory area into another process 16->34 36 Tries to detect virtualization through RDTSC time measurements 16->36 22 cmd.exe 1 16->22         started        28 www.sodo6697.com 185.213.60.67, 49833, 80 XIAOZHIYUN1-AS-APICIDCNETWORKUS Hong Kong 19->28 38 System process connects to network (likely due to code injection or exploit) 19->38 signatures10 process11 process12 24 conhost.exe 22->24         started       
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/b0cfa1848c7b08eb881e615731493df57963468fa3fb461ebf1468271dd17a14/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2021-10-20 15:02:52 UTC
AV detection:
19 of 28 (67.86%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=wdh2dbempmeoxca6mfltcsj56v4wgrupup5umhv7crucohorpika._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
5fd22c8bf1e7e06ccaa6ebc23410086fe0e3bc30b1613cd6ee734f280c0d6979
Formbook
721c03c3cc73dddfcf27e473fc9d1962dd59b3cc7f7b70cdc17d2d6a049aed8e
Formbook
7c0ab1d837684e8d37e75578f4821e25d7729cb9d3739f397cabbb9c95f2ddae
Formbook
7c7e7d1ad3f8afd0ffcba163bac7c1df9ceb8202a96a61b30b697569e00051b0
Formbook
85ee6fb97c2010a9360ee393b6f8515260e312de96ca3afbde06d5aaed699d3d
Formbook
a68cb3bf1d9d41e29fcf2e4391e827591e58783cea5a13fe95403fb6b3429b5d
Formbook
da2458789c338c2719661254515dba2fc92c21ef91a11da3d192a6542ca56814
Formbook
+ 10'688 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:jy0b rat spyware stealer trojan
Link:
https://tria.ge/reports/211020-s78s8ahcc6/
Behaviour
Gathers network information
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.filecrev.com/jy0b/
Unpacked files
SH256 hash:
5f345f7c4e00a361e326b4678f1812965e8a14957b065eb78d6da684aa0fe0d3
MD5 hash:
4d6d5351b751dec76d80c643bb7d6846
SHA1 hash:
a4695f4529fe8b467ce8711dd5d55fd27f4ddbc3
Detections:
win_formbook_g0
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win_formbook_auto
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Link:
https://www.unpac.me/results/f39546ce-1b39-4a1b-b277-7b2932677938/
Parent samples :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 hash:
69fa80726b07d8a08b4d5d6c45f3bf31ac022721ddf1aca8993447a8a7e0f20c
MD5 hash:
4483da241f156722567fafca0ca3baf2
SHA1 hash:
ff7c2e8d8a5c8ad494ce31ec72256837eb1fff0a
Link:
https://www.unpac.me/results/f39546ce-1b39-4a1b-b277-7b2932677938/
SH256 hash:
6fee24a1398bb022d0c5b9059b9b21e7636fc3861866a583d0e49b7d0ca56d58
MD5 hash:
36e2528c3cb3ad299ea481283687cdd6
SHA1 hash:
1981340bc7be1aa8f78f942fc6f0724838e35a87
Link:
https://www.unpac.me/results/f39546ce-1b39-4a1b-b277-7b2932677938/
SH256 hash:
b0cfa1848c7b08eb881e615731493df57963468fa3fb461ebf1468271dd17a14
MD5 hash:
94abfdf47572a6023f28be8b72f2fb74
SHA1 hash:
c05059aa66ebd5eefe06f49e889f178aafebf5a1
Link:
https://www.unpac.me/results/f39546ce-1b39-4a1b-b277-7b2932677938/
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/b0cfa1848c7b08eb881e615731493df57963468fa3fb461ebf1468271dd17a14

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: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.

  
Delivery method
Other
Cape
Cape
https://www.capesandbox.com/analysis/198865/
  
URLhaus
https://urlhaus.abuse.ch/url/1701307/

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