MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 198a4a7609ba35046466d687d1c79c8ff4dcb0818ab256b1715a3677d23eba9c. 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: 13


Intelligence 13 IOCs YARA 2 File information Comments
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SHA256 hash: 198a4a7609ba35046466d687d1c79c8ff4dcb0818ab256b1715a3677d23eba9c
SHA3-384 hash: d9a76d770a9afacdd33c1c9b2751a315f924d29a23a886240649120f978a7e0117453073fa9c32e48f821bec7998c1cb
SHA1 hash: 567a10247a706520650458814b3fd939e56402b2
MD5 hash: 8966be12f3780e072207347e5a0fb748
humanhash: crazy-green-single-nuts
File name:vbc.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:1'084'928 bytes
First seen:2022-03-14 12:03:56 UTC
Last seen:2022-03-14 13:50:34 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'205 x SnakeKeylogger)
ssdeep 24576:ZTRs4hgzvBS/UzZjuuIaDxqSk8imkLp9cFcWVMoy+x:ZTRs4uzA0ZjuulvWX3cA
Threatray 15'124 similar samples on MalwareBazaar
TLSH T115359EE4AB08567FEE71237AC1B815313EB61D46A895FF29568E32C90973F8F08D241D
Reporter James_inthe_box
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
173
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/250154/
Detection(s):
SecuriteInfo.com.Trojan.PWS.Stealer.23680.6172.31444.UNOFFICIAL
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Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Sending a custom TCP request
Сreating synchronization primitives
Launching a process
Creating a process with a hidden window
Creating a file in the %AppData% directory
Enabling the 'hidden' option for recently created files
Adding an access-denied ACE
Creating a process from a recently created file
Creating a file in the %temp% directory
Launching cmd.exe command interpreter
Unauthorized injection to a system process
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
obfuscated packed replace.exe update.exe
Link:
https://www.filescan.io/uploads/622f2f3a0cd58dbd92962350/reports/6809827e-aaa3-475e-984e-806069ea0653/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:
Generic Malware
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Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/a57a9d1b-4f79-477a-8a16-04b3694d68d3
Result
Threat name:
FormBook
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Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/956275
Signature
.NET source code contains potential unpacker
Adds a directory exclusion to Windows Defender
C2 URLs / IPs found in malware configuration
Found malware configuration
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)
Multi AV Scanner detection for dropped file
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
Sigma detected: Suspicious Add Scheduled Task From User AppData Temp
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to detect virtualization through RDTSC time measurements
Uses ipconfig to lookup or modify the Windows network settings
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 588758 Sample: vbc.exe Startdate: 14/03/2022 Architecture: WINDOWS Score: 100 46 www.smylifedentalcarechino.com 2->46 54 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->54 56 Found malware configuration 2->56 58 Malicious sample detected (through community Yara rule) 2->58 60 8 other signatures 2->60 11 vbc.exe 7 2->11         started        signatures3 process4 file5 40 C:\Users\user\AppData\Roaming\wRPmdYs.exe, PE32 11->40 dropped 42 C:\Users\user\AppData\Local\...\tmp37BD.tmp, XML 11->42 dropped 44 C:\Users\user\AppData\Local\...\vbc.exe.log, ASCII 11->44 dropped 64 Uses schtasks.exe or at.exe to add and modify task schedules 11->64 66 Adds a directory exclusion to Windows Defender 11->66 68 Tries to detect virtualization through RDTSC time measurements 11->68 15 vbc.exe 11->15         started        18 powershell.exe 25 11->18         started        20 powershell.exe 24 11->20         started        22 schtasks.exe 1 11->22         started        signatures6 process7 signatures8 70 Modifies the context of a thread in another process (thread injection) 15->70 72 Maps a DLL or memory area into another process 15->72 74 Sample uses process hollowing technique 15->74 76 Queues an APC in another process (thread injection) 15->76 24 explorer.exe 15->24 injected 27 conhost.exe 18->27         started        29 conhost.exe 20->29         started        31 conhost.exe 22->31         started        process9 signatures10 62 Uses ipconfig to lookup or modify the Windows network settings 24->62 33 ipconfig.exe 24->33         started        process11 signatures12 48 Self deletion via cmd delete 33->48 50 Maps a DLL or memory area into another process 33->50 52 Tries to detect virtualization through RDTSC time measurements 33->52 36 cmd.exe 1 33->36         started        process13 process14 38 conhost.exe 36->38         started       
Detection:
formbook
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Link:
https://mwdb.cert.pl/sample/198a4a7609ba35046466d687d1c79c8ff4dcb0818ab256b1715a3677d23eba9c/
Threat name:
ByteCode-MSIL.Trojan.AgenteslaPacker
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Status:
Malicious
First seen:
2022-03-14 04:39:36 UTC
File Type:
PE (.Net Exe)
Extracted files:
13
AV detection:
22 of 27 (81.48%)
Threat level:
  5/5
Verdict:
malicious
Label(s):
formbook
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Similar samples:
01880a4afa8656841bb250a9a51b006f4137ffeeb3d9433af82569b597e5ea4a
Formbook
0ba2f6257fb96db81026615bb726f0ede3ea3263f2f79989cbab3f7e3cff97a1
Formbook
51f8764688b854692ca7d65e8d05d996c37e938892a167897880bd4e6da543d9
Formbook
bd226a9a2ca1733959a195b2b808bf9183ce5aebdb730afdb31a62ff42817a0b
Formbook
c6043c3c87526712c251385dacc61e443647d1dcca1e86ce411e69cb711c4640
Formbook
da9e890626946b96039a20cc107a0f7f0bc13440d9ede74799b6f9a2514e3759
Formbook
dfa895fe8d8da53e7f3c0466a7e88aa5d36f1a781675d03b0c7400847a0b4f6b
Formbook
ec575e5cdf3da323c27e65f3042586173ca50ba0682b733a61f0b47f80c3004e
Formbook
+ 15'114 additional samples on MalwareBazaar
Result
Malware family:
formbook
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Score:
  10/10
Tags:
family:formbook campaign:b11y rat spyware stealer trojan
Link:
https://tria.ge/reports/220314-n8l9dsgghr/
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Program crash
Suspicious use of SetThreadContext
Checks computer location settings
Uses the VBS compiler for execution
.NET Reactor proctector
Formbook Payload
Formbook
Unpacked files
SH256 hash:
bf88099b96595d25d551b8756dd990180fe1472f0ec632f998c40b80a6c821d7
MD5 hash:
a4b09fc208b35f0220f4e724fe297918
SHA1 hash:
218882ca246638cc4ce7297f33510ca7623a7f5c
Detections:
win_formbook_g0
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win_formbook_auto
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Link:
https://www.unpac.me/results/f8fadb76-8473-4af0-916f-07765a341ec6/
Parent samples :
198a4a7609ba35046466d687d1c79c8ff4dcb0818ab256b1715a3677d23eba9c
33a3c033ee1670aa88bd3853922c8ad9307c7700c36fa231414f5c96b5937546
SH256 hash:
52aeadc60bbeca150722f2352102120ab9c7254f277d39276230f4d622734edb
MD5 hash:
c04999e44610a370ef014f7c58518862
SHA1 hash:
fe1fd5d682971f71f606349e80bdb8a515f092ab
Link:
https://www.unpac.me/results/f8fadb76-8473-4af0-916f-07765a341ec6/
SH256 hash:
54be968048562427b227ac3e3833c337a6609d48a123690f38c3dceb84986b19
MD5 hash:
942656ba603f3306882e2665c5194084
SHA1 hash:
d1ff2ed7038b28cefca002bd0b52b799787d2aa6
Link:
https://www.unpac.me/results/f8fadb76-8473-4af0-916f-07765a341ec6/
SH256 hash:
9b00e2fa33ad72dec22a5e107ab6886da72bbe0bed89a721e877c1dc3ce6a662
MD5 hash:
b4c9c16228f0ee1de70ffc6264fb720c
SHA1 hash:
437049e452a511e220abdb32df695cdf07f5a7d0
Link:
https://www.unpac.me/results/f8fadb76-8473-4af0-916f-07765a341ec6/
SH256 hash:
198a4a7609ba35046466d687d1c79c8ff4dcb0818ab256b1715a3677d23eba9c
MD5 hash:
8966be12f3780e072207347e5a0fb748
SHA1 hash:
567a10247a706520650458814b3fd939e56402b2
Link:
https://www.unpac.me/results/f8fadb76-8473-4af0-916f-07765a341ec6/
Malware family:
FormBook
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Verdict:
Malicious
Link:
https://www.vmray.com/analyses/198a4a7609ba/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/198a4a7609ba35046466d687d1c79c8ff4dcb0818ab256b1715a3677d23eba9c

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.

  
Delivery method
Other
Cape
Cape
https://www.capesandbox.com/analysis/250154/

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