MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 ef4c04da2b5fe6ce33597d1dbe44a8b84b156cb1bd03b3a3f8d8c9dabede075b. 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: 9


Intelligence 9 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: ef4c04da2b5fe6ce33597d1dbe44a8b84b156cb1bd03b3a3f8d8c9dabede075b
SHA3-384 hash: 877e553f11d18cf73f85fbfd4680636e83907ceb5d479a74cecdc949c3ddea96ab8c9249ec62bf0d8b0d447522a88cef
SHA1 hash: 659c4ebc8342d5eaa8ebb8e8e2fca4430cf33639
MD5 hash: be489841f4f228494554e10c55bbe3dc
humanhash: carolina-timing-crazy-avocado
File name:Quatation0000000000.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:472'576 bytes
First seen:2020-10-26 13:36:45 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'742 x AgentTesla, 19'607 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 6144:4lzdTZ4rjNxG/i/OfFGr6BLqt0MPYHBlvaXQuW8MOPMfiqH:4V/4rjvGiO9C6B2t0jHBl+QuWLVi
Threatray 3'028 similar samples on MalwareBazaar
TLSH F4A4C0713D92587ECA6B077514B985C0FABA26C73FA48B0D719F430C0E15A6BEB5324B
Reporter abuse_ch
Tags:exe FormBook


Avatar
abuse_ch
Malspam distributing unidentified malware:

HELO: msa-smtp1.hinet.net
Sending IP: 168.95.6.52
From: <danny-feeder@umail.hinet.net>
Subject: RE: Italy || Quote our Different Designs
Attachment: Quotation.rar (contains "Quatation0000000000.exe")

Intelligence

File Origin
# of uploads :
1
# of downloads :
79
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/79077/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file in the %temp% subdirectories
Sending a UDP request
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
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/511791
Signature
.NET source code contains potential unpacker
.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 netsh to modify the Windows network and firewall settings
Writes to foreign memory regions
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 305014 Sample: Quatation0000000000.exe Startdate: 26/10/2020 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 5 other signatures 2->38 10 Quatation0000000000.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 netsh.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:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/ef4c04da2b5fe6ce33597d1dbe44a8b84b156cb1bd03b3a3f8d8c9dabede075b/
Threat name:
ByteCode-MSIL.Backdoor.Androm
Create hunting rule
Status:
Malicious
First seen:
2020-10-26 02:42:01 UTC
AV detection:
22 of 29 (75.86%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=55gajwrll7tm4m2zpuo34rfixbfrk3frxub3hi7y3de5vpw6a5nq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
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Formbook
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82ec33dd4f26eab172d8a0fc536751d12153a3f7175351da311a7059217c670e
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bfae046475f1458c460cf4eed534a48c8e769fbfc622138170c3945a4ad61a90
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c9b3c7ce6446a64df017cf3301ab24a7993b1336befdec8bab77332fe783e4d4
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ccfefbc3469336f27478735b5cf445612a128621b492a6a9b5a6a235a3fde320
Formbook
e30d5f240c8600e531832e61f6abddde973ba724b55e8c8bb455a151607b40a3
Formbook
+ 3'018 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
rat trojan spyware stealer family:formbook
Link:
https://tria.ge/reports/201026-eqy97pelya/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Loads dropped DLL
Executes dropped EXE
Formbook Payload
Formbook
Malware Config
C2 Extraction:
http://www.elchef.club/ee5/
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.

Malspam

Formbook

rar 68d1d01da9a81eb61256b631c13dbc4c30b49b54fdb1e765028b4325e4e4479f

Formbook

Executable exe ef4c04da2b5fe6ce33597d1dbe44a8b84b156cb1bd03b3a3f8d8c9dabede075b

(this sample)

  
Dropped by
MD5 afa6e5998806fb2333354cedc0fbf0e5
  
Delivery method
Distributed via e-mail attachment
  
Dropped by
SHA256 68d1d01da9a81eb61256b631c13dbc4c30b49b54fdb1e765028b4325e4e4479f
Cape
Cape
https://www.capesandbox.com/analysis/79077/

Comments