MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 71d4abb6ea36ebfca83e1b236cadfd303a41fe6d642637197c630ec1263b20db. 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: 10


Intelligence 10 IOCs YARA 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 71d4abb6ea36ebfca83e1b236cadfd303a41fe6d642637197c630ec1263b20db
SHA3-384 hash: 190c96f26effb2d73b321d4b00ea0713ff5ae902a5b48bf67a0075ccc4edb5156eb64d23e2b7ff5e9d8a4ee5484e40b2
SHA1 hash: 3e0bc65708c7242f9d77681d892f19a06ae192eb
MD5 hash: 2bfcac42c6f82c8be1898e07141ba58b
humanhash: kitten-ohio-mars-early
File name:2bfcac42c6f82c8be1898e07141ba58b.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:924'672 bytes
First seen:2022-04-14 11:25:11 UTC
Last seen:2022-04-20 10:21:14 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'661 x AgentTesla, 19'474 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 12288:Aqy/aDOEhGkEHIxZEfz1ZwdeTzQVnGuRv0nNqMUFrVn6LAXnLj9EUdxUHxms3UcX:VyihgVOEzw1YuRww3nSAXn39Ew8
TLSH T1DF158D688F95CA30D41AA332225261FEDAFD89F71C74855208BB47871C72DD8CB19BA7
TrID 61.5% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
11.0% (.SCR) Windows screen saver (13101/52/3)
8.8% (.EXE) Win64 Executable (generic) (10523/12/4)
5.5% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.2% (.EXE) Win16 NE executable (generic) (5038/12/1)
Reporter abuse_ch
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
285
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
2bfcac42c6f82c8be1898e07141ba58b.exe
Verdict:
Suspicious activity
Analysis date:
2022-04-14 11:48:35 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/1315012c-d03f-4dfb-b78e-d0dafc6bbb2b

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/263694/
Detection(s):
SecuriteInfo.com.Trojan.GenericKD.48867287.20185.27260.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Adding an access-denied ACE
Using the Windows Management Instrumentation requests
Launching a process
Сreating synchronization primitives
Creating a file
Searching for synchronization primitives
Launching cmd.exe command interpreter
DNS request
Sending an HTTP GET request
Unauthorized injection to a system process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
control.exe obfuscated packed remote.exe update.exe
Link:
https://www.filescan.io/uploads/625804d5ffe27d5119cd8464/reports/6021d8f5-ec63-46f4-9df8-cb682357644e/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.
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/7e22eca0-7b61-4687-a126-6920fe84b603
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/976784
Signature
.NET source code references suspicious native API functions
Allocates memory in foreign processes
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Contains functionality to hide user accounts
Found malware configuration
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)
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for submitted file
Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines)
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Sigma detected: Suspicious Svchost Process
System process connects to network (likely due to code injection or exploit)
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to detect virtualization through RDTSC time measurements
Writes to foreign memory regions
Yara detected AntiVM3
Yara detected FormBook
Yara detected UAC Bypass using CMSTP
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 609268 Sample: 3cJ1gCCwJU.exe Startdate: 14/04/2022 Architecture: WINDOWS Score: 100 35 www.manifiestoccs.com 2->35 37 www.lacimaeventos.com 2->37 39 2 other IPs or domains 2->39 47 Multi AV Scanner detection for domain / URL 2->47 49 Found malware configuration 2->49 51 Malicious sample detected (through community Yara rule) 2->51 53 11 other signatures 2->53 11 3cJ1gCCwJU.exe 1 2->11         started        signatures3 process4 file5 33 C:\Users\user\AppData\...\3cJ1gCCwJU.exe.log, ASCII 11->33 dropped 63 Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines) 11->63 65 Writes to foreign memory regions 11->65 67 Allocates memory in foreign processes 11->67 69 Injects a PE file into a foreign processes 11->69 15 makecab.exe 11->15         started        signatures6 process7 signatures8 71 Modifies the context of a thread in another process (thread injection) 15->71 73 Maps a DLL or memory area into another process 15->73 75 Sample uses process hollowing technique 15->75 77 2 other signatures 15->77 18 explorer.exe 15->18 injected 22 svchost.exe 1 15->22         started        process9 dnsIp10 41 www.tsdsbjt.com 108.186.180.118, 49799, 80 PEGTECHINCUS United States 18->41 43 deirdremoncy.com 172.65.232.115, 49743, 80 CLOUDFLARENETUS United States 18->43 45 7 other IPs or domains 18->45 55 System process connects to network (likely due to code injection or exploit) 18->55 24 systray.exe 18->24         started        27 autochk.exe 18->27         started        signatures11 process12 signatures13 57 Modifies the context of a thread in another process (thread injection) 24->57 59 Maps a DLL or memory area into another process 24->59 61 Tries to detect virtualization through RDTSC time measurements 24->61 29 cmd.exe 1 24->29         started        process14 process15 31 conhost.exe 29->31         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/71d4abb6ea36ebfca83e1b236cadfd303a41fe6d642637197c630ec1263b20db/
Threat name:
ByteCode-MSIL.Trojan.Generic
Create hunting rule
Status:
Suspicious
First seen:
2022-04-13 13:51:15 UTC
File Type:
PE (.Net Exe)
Extracted files:
3
AV detection:
16 of 42 (38.10%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=ohkkxnxkg3v7zkb6dmrwzlp5ga5ed7tnmqtdogl4mmhmcjr3ednq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Result
Malware family:
xloader
Create hunting rule
Score:
  10/10
Tags:
family:xloader campaign:ud5f evasion loader rat suricata
Link:
https://tria.ge/reports/220414-nke56sbhdq/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Program crash
Suspicious use of SetThreadContext
Maps connected drives based on registry
Checks BIOS information in registry
Looks for VMWare Tools registry key
Looks for VirtualBox Guest Additions in registry
Xloader Payload
Xloader
suricata: ET MALWARE FormBook CnC Checkin (GET)
Unpacked files
SH256 hash:
71d4abb6ea36ebfca83e1b236cadfd303a41fe6d642637197c630ec1263b20db
MD5 hash:
2bfcac42c6f82c8be1898e07141ba58b
SHA1 hash:
3e0bc65708c7242f9d77681d892f19a06ae192eb
Link:
https://www.unpac.me/results/2039b385-2f4e-4ecf-9a8c-fc993dff5128/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.38
Link:
https://yomi.yoroi.company/submissions/71d4abb6ea36ebfca83e1b236cadfd303a41fe6d642637197c630ec1263b20db

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:BitcoinAddress
Create hunting rule
Author:Didier Stevens (@DidierStevens)
Description:Contains a valid Bitcoin address
Rule name:malware_Formbook_strings
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect Formbook in memory
Reference:internal research
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
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.

Web download

Formbook

Executable exe 71d4abb6ea36ebfca83e1b236cadfd303a41fe6d642637197c630ec1263b20db

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/2144805/
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/263694/

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