MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 9384d9df16443e4eb251679698da5f349fccf08f708583955ffd84f8ff62b76f. 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
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 9384d9df16443e4eb251679698da5f349fccf08f708583955ffd84f8ff62b76f
SHA3-384 hash: e8fffb2c2d444797f0eca23b552276de8be99e1acdc400094321a40312a62f4d8c9e55ddc0fac47e74c0f75331a63834
SHA1 hash: ea7042e920b1c8c0168c111ed0d9dc5283125b5f
MD5 hash: d204e66e0d2ca29b4c382818fa44e710
humanhash: diet-eight-south-nine
File name:d204e66e0d2ca29b4c382818fa44e710.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:470'528 bytes
First seen:2020-10-28 09:55:55 UTC
Last seen:2020-10-28 12:07:39 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 12288:eV/4rjvGiO9C6O12LgfSfI2mJeYghLfKIy:/O9C6O132IJgpiIy
TLSH C7A4CFB23C92587ECA6B07754569C5C0FABA17C73FA48B0D719B430C0E15A1BEB6325B
Reporter abuse_ch
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
119
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/80431/
Detection(s):
SecuriteInfo.com.BehavesLike.Win32.Generic.gc.19876.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 a process
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/514882
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
Writes to foreign memory regions
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 306548 Sample: 5j8KUrxwZ3.exe Startdate: 28/10/2020 Architecture: WINDOWS Score: 100 34 Malicious sample detected (through community Yara rule) 2->34 36 Multi AV Scanner detection for submitted file 2->36 38 Yara detected FormBook 2->38 40 3 other signatures 2->40 10 5j8KUrxwZ3.exe 8 2->10         started        process3 file4 28 C:\Users\user\AppData\...\AgileDotNetRT.dll, PE32 10->28 dropped 30 C:\Users\user\AppData\...\AgileDotNetRT.dll, PE32 10->30 dropped 32 C:\Users\user\AppData\...\AddInProcess32.exe, PE32 10->32 dropped 48 Writes to foreign memory regions 10->48 50 Allocates memory in foreign processes 10->50 52 Tries to detect virtualization through RDTSC time measurements 10->52 54 Injects a PE file into a foreign processes 10->54 14 AddInProcess32.exe 10->14         started        signatures5 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 2 other signatures 14->62 17 explorer.exe 14->17 injected process8 process9 19 msdt.exe 17->19         started        22 autoconv.exe 17->22         started        signatures10 42 Modifies the context of a thread in another process (thread injection) 19->42 44 Maps a DLL or memory area into another process 19->44 46 Tries to detect virtualization through RDTSC time measurements 19->46 24 cmd.exe 1 19->24         started        process11 process12 26 conhost.exe 24->26         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/9384d9df16443e4eb251679698da5f349fccf08f708583955ffd84f8ff62b76f/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2020-10-28 09:45:42 UTC
AV detection:
25 of 29 (86.21%)
Threat level:
  5/5
Result
Malware family:
formbook
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Score:
  10/10
Tags:
family:formbook rat spyware stealer trojan
Link:
https://tria.ge/reports/201028-cxenf69t7n/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Enumerates system info in registry
Suspicious use of SetThreadContext
Loads dropped DLL
Executes dropped EXE
Formbook Payload
Formbook
Malware Config
C2 Extraction:
http://www.taxcoachforlatinos.com/v5e/
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
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect Formbook in memory
Reference:internal research
Rule name:win_formbook_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:autogenerated rule brought to you by yara-signator
Rule name:win_formbook_g0
Create hunting rule
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 9384d9df16443e4eb251679698da5f349fccf08f708583955ffd84f8ff62b76f

(this sample)

Cape
Cape
https://www.capesandbox.com/analysis/80431/
  
URLhaus
https://urlhaus.abuse.ch/url/760038/
  
Delivery method
Distributed via web download

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