MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 daa0f6d3d2d038fb25471dd95b0ec220855d19197e54356670c902da08c63db4. 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: 6


Intelligence 6 IOCs YARA 3 File information Comments
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SHA256 hash: daa0f6d3d2d038fb25471dd95b0ec220855d19197e54356670c902da08c63db4
SHA3-384 hash: 469d45c48072dba4ce289b7d17aa1ec99721757330c97bda749402de93c968b38a2a7b9ab3e9047b41a284b575b969c6
SHA1 hash: 813435a31436244745e93c7e6bb8aebc4c418dd9
MD5 hash: a52224189f4299186f54c3c1dfc82167
humanhash: north-bakerloo-october-chicken
File name:a52224189f4299186f54c3c1dfc82167.exe
Download: download sample
Signature Formbook
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File size:471'040 bytes
First seen:2020-10-28 09:56:26 UTC
Last seen:2020-10-28 12:07:29 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 12288:yV/4rjvGiO9C6n+y1MhZEmvWN6UjFdV1:LO9C6viE3jFB
TLSH 24A4C0B17D92587ECAAE0775156981C1FAB627C73FA08B0D71AF430C0E14A6BEB53247
Reporter abuse_ch
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
115
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Formbook
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Link:
https://www.capesandbox.com/analysis/80433/
Detection(s):
SecuriteInfo.com.BehavesLike.Win32.Generic.gc.3120.UNOFFICIAL
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Result
Verdict:
Malware
Maliciousness:

Behaviour
Sending a UDP request
Creating a file in the %temp% subdirectories
Creating a window
Creating a file
Creating a process from a recently created file
Launching the process to change network settings
Launching cmd.exe command interpreter
Unauthorized injection to a recently created process
Unauthorized injection to a recently created process by context flags manipulation
Unauthorized injection to a system process
Result
Threat name:
FormBook
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Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/514900
Signature
.NET source code contains very large array initializations
Allocates memory in foreign processes
Injects a PE file into a foreign processes
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
Tries to detect virtualization through RDTSC time measurements
Uses ipconfig to lookup or modify the Windows network settings
Writes to foreign memory regions
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 306561 Sample: 3gJ5ICIrKt.exe Startdate: 28/10/2020 Architecture: WINDOWS Score: 100 32 Malicious sample detected (through community Yara rule) 2->32 34 Multi AV Scanner detection for submitted file 2->34 36 Yara detected FormBook 2->36 38 4 other signatures 2->38 10 3gJ5ICIrKt.exe 8 2->10         started        process3 file4 26 C:\Users\user\AppData\...\AgileDotNetRT.dll, PE32 10->26 dropped 28 C:\Users\user\AppData\...\AgileDotNetRT.dll, PE32 10->28 dropped 30 C:\Users\user\AppData\...\AddInProcess32.exe, PE32 10->30 dropped 46 Writes to foreign memory regions 10->46 48 Allocates memory in foreign processes 10->48 50 Tries to detect virtualization through RDTSC time measurements 10->50 52 Injects a PE file into a foreign processes 10->52 14 AddInProcess32.exe 10->14         started        signatures5 process6 signatures7 54 Modifies the context of a thread in another process (thread injection) 14->54 56 Maps a DLL or memory area into another process 14->56 58 Sample uses process hollowing technique 14->58 60 2 other signatures 14->60 17 explorer.exe 14->17 injected process8 process9 19 ipconfig.exe 17->19         started        signatures10 40 Modifies the context of a thread in another process (thread injection) 19->40 42 Maps a DLL or memory area into another process 19->42 44 Tries to detect virtualization through RDTSC time measurements 19->44 22 cmd.exe 1 19->22         started        process11 process12 24 conhost.exe 22->24         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/daa0f6d3d2d038fb25471dd95b0ec220855d19197e54356670c902da08c63db4/
Threat name:
ByteCode-MSIL.Backdoor.Remcos
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Status:
Malicious
First seen:
2020-10-28 09:45:52 UTC
AV detection:
22 of 29 (75.86%)
Threat level:
  5/5
Result
Malware family:
formbook
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Score:
  10/10
Tags:
family:formbook rat spyware stealer trojan persistence
Link:
https://tria.ge/reports/201028-wyywfpt4p6/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Modifies Internet Explorer settings
Drops file in Program Files directory
Suspicious use of SetThreadContext
Adds Run key to start application
Loads dropped DLL
Reads user/profile data of web browsers
Executes dropped EXE
Formbook Payload
Formbook
Please note that we are no longer able to provide a coverage score for Virus Total.

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:Formbook
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Author:JPCERT/CC Incident Response Group
Description:detect Formbook in memory
Reference:internal research
Rule name:win_formbook_auto
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Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:autogenerated rule brought to you by yara-signator
Rule name:win_formbook_g0
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Author:Slavo Greminger, SWITCH-CERT

File information

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

Web download

Formbook

Executable exe daa0f6d3d2d038fb25471dd95b0ec220855d19197e54356670c902da08c63db4

(this sample)

Cape
Cape
https://www.capesandbox.com/analysis/80433/
  
URLhaus
https://urlhaus.abuse.ch/url/760037/
  
Delivery method
Distributed via web download

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