MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4c5764d95bdd80b5c98ce78df8684af248550c535adafae13b92b3b79125b871. 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 2 File information Comments
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SHA256 hash: 4c5764d95bdd80b5c98ce78df8684af248550c535adafae13b92b3b79125b871
SHA3-384 hash: 7a8d2e6ae266f0c85fff884232952974528887dd8cdaa34819e5f43bcc6980d42b4c4d7c2ce76527174dce7c2f099855
SHA1 hash: f1e2fae8dd07fb2cd86bd8d7284787e1e6c21335
MD5 hash: 49398cdceb689a12ea3b528fa8aa5b9b
humanhash: beryllium-april-tango-spaghetti
File name:QUOTE REQUEST_Pdf___________________________________....exe
Download: download sample
Signature Formbook
Create hunting rule
File size:495'842 bytes
First seen:2022-02-10 09:06:47 UTC
Last seen:2022-02-10 09:38:58 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 099c0646ea7282d232219f8807883be0 (476 x Formbook, 210 x Loki, 107 x AgentTesla)
ssdeep 6144:WwgOKf+FhjxqRuytvLV+nkGcLQlPE4yLrfwDsxp7WqwqFwtmv9h+tg:FFlxqt8nvEUE4eqsTTwqOte9ctg
Threatray 10'762 similar samples on MalwareBazaar
TLSH T120B4E012314F848BF57325F09AEFD62155A86F98322ED24D76B07F2726F2315046FB2A
File icon (PE):PE icon
dhash icon 04d2a0989aaea419 (1 x Formbook)
Reporter GovCERT_CH
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
246
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/240601/
Detection(s):
SecuriteInfo.com.FakeAV.CXA.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a file in the %temp% directory
Creating a window
Creating a process from a recently created file
Creating a file in the %AppData% subdirectories
Searching for synchronization primitives
Launching the default Windows debugger (dwwin.exe)
DNS request
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Unauthorized injection to a recently created process by context flags manipulation
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
control.exe overlay packed shell32.dll
Link:
https://www.filescan.io/uploads/6204d5bb36f992191836b3dd/reports/79e9d398-bf4e-4561-a743-134545ae1fe1/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
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/e863d4bb-5c57-4bd7-b1ae-47c8c0e67247
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/937484
Signature
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Found evasive API chain (may stop execution after reading information in the PEB, e.g. number of processors)
Found malware configuration
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for submitted file
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 569958 Sample: QUOTE REQUEST_Pdf__________... Startdate: 10/02/2022 Architecture: WINDOWS Score: 100 35 Multi AV Scanner detection for domain / URL 2->35 37 Found malware configuration 2->37 39 Malicious sample detected (through community Yara rule) 2->39 41 6 other signatures 2->41 8 QUOTE REQUEST_Pdf___________________________________....exe 19 2->8         started        11 easgo.exe 2->11         started        13 easgo.exe 2->13         started        process3 file4 27 C:\Users\user\AppData\Local\...\whlcubfh.exe, PE32 8->27 dropped 15 whlcubfh.exe 1 2 8->15         started        19 WerFault.exe 19 9 11->19         started        21 WerFault.exe 9 13->21         started        process5 file6 29 C:\Users\user\AppData\Roaming\...\easgo.exe, PE32 15->29 dropped 31 Found evasive API chain (may stop execution after reading information in the PEB, e.g. number of processors) 15->31 33 Injects a PE file into a foreign processes 15->33 23 whlcubfh.exe 15->23         started        signatures7 process8 process9 25 WerFault.exe 23 9 23->25         started       
Detection:
xloader
Create hunting rule
Link:
https://mwdb.cert.pl/sample/4c5764d95bdd80b5c98ce78df8684af248550c535adafae13b92b3b79125b871/
Threat name:
Win32.Trojan.FormBook
Create hunting rule
Status:
Malicious
First seen:
2022-02-10 09:07:08 UTC
File Type:
PE (Exe)
Extracted files:
4
AV detection:
21 of 41 (51.22%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=jrlwjwk33wallsmm46g7q2ck6jefkdctllnpvyj3skz3pejfxbyq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
13c9e72370631d555cab3bd6ba12339252fa26915a6a60741668aea478a17cbb
Formbook
41d5c1e02c1b4a694660a1c8759ffd46569f5b9574ed99a08d3f00cd2765d2d0
Formbook
4d1ac5962b58c0bf6386b85fc1c2029efb0c8d5ccf0054733795eec1ea8b3291
Formbook
7cbd8cc35b03d65491ad01b6a44b84dc047e6663189554201c24dbfbeb81473c
Formbook
af7abd08a5752f55f59e38b2bd9568943ada7d2b23ddc3324b735beebd8846ce
Formbook
d2cc3484cdabe8305bf9afd35530ca1118ca2c308408dc7140c3a94b392b60bb
Formbook
dbc4b30858a2fa9f7001f2347e1cb88f660b8e6651962519b78a7978c6cc2d72
Formbook
+ 10'752 additional samples on MalwareBazaar
Result
Malware family:
xloader
Create hunting rule
Score:
  10/10
Tags:
family:xloader campaign:ihg0 loader persistence rat
Link:
https://tria.ge/reports/220210-k3bc6agff9/
Behaviour
Checks processor information in registry
Modifies data under HKEY_USERS
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Program crash
Drops file in Windows directory
Suspicious use of SetThreadContext
Adds Run key to start application
Loads dropped DLL
Executes dropped EXE
Xloader Payload
Xloader
Unpacked files
SH256 hash:
811078381800166dbbc5fd38d26c3bef261557c73ff977602a2248287073df3f
MD5 hash:
f33cef1ae2de76a7e317e95f89b1c75c
SHA1 hash:
eb42461f6bc3be8d61f900d96ef01d25aef7207b
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/ef94adc2-96bb-495e-9ff4-d0379b9b22b9/
Parent samples :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 hash:
ace258816538c194a5a8a1f0413c4adec40315e98b6f6c92f7d473e52f93d3ff
MD5 hash:
6933f23d6fe1b621d74f1bb8d4b98d5d
SHA1 hash:
23f275962b53e612800f9f7e0a1eca31e3fec5bc
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/ef94adc2-96bb-495e-9ff4-d0379b9b22b9/
SH256 hash:
15a4d78f271542c9cbf533de0d219c1148b519a602bdbe4cbb0ea3ef78a3494e
MD5 hash:
d8df1d97e54a5883ff8249e0a745d5e7
SHA1 hash:
19ed38ad2231dd139858de6604ac14bff924e9b5
Link:
https://www.unpac.me/results/ef94adc2-96bb-495e-9ff4-d0379b9b22b9/
SH256 hash:
4c5764d95bdd80b5c98ce78df8684af248550c535adafae13b92b3b79125b871
MD5 hash:
49398cdceb689a12ea3b528fa8aa5b9b
SHA1 hash:
f1e2fae8dd07fb2cd86bd8d7284787e1e6c21335
Link:
https://www.unpac.me/results/ef94adc2-96bb-495e-9ff4-d0379b9b22b9/
Malware family:
XLoader
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/4c5764d95bdd/report/overview.html
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:malware_Formbook_strings
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:Detects win.formbook.

File information

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

Malspam

Formbook

Executable exe 4c5764d95bdd80b5c98ce78df8684af248550c535adafae13b92b3b79125b871

(this sample)

  
Dropped by
Formbook
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/240601/

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