MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c8c237670713836f584e4d9e740d1f8d302ab223e60c01790d18d06eef978387. 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: 16


Intelligence 16 IOCs YARA 6 File information Comments
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SHA256 hash: c8c237670713836f584e4d9e740d1f8d302ab223e60c01790d18d06eef978387
SHA3-384 hash: f7713c092deac101fc8aa296ba06bb09d7cc35e314f66cbfb5e314eacdd8e724bea3a4e41974bf7a56c7efcf99ab2eca
SHA1 hash: 95eb75c881afeeea670810083fcbad39e8466138
MD5 hash: 8c0aa48459ffd620b65440ce711718b5
humanhash: ohio-cup-bluebird-sweet
File name:bq0WOI4IP84Va7A.bat
Download: download sample
Signature Formbook
Create hunting rule
File size:764'928 bytes
First seen:2025-03-19 05:36:35 UTC
Last seen:2025-03-19 06:30:02 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'660 x AgentTesla, 19'470 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 12288:C0tbPOJXLCspniWHXQfdjqTOR3tebMC6OC0M9Ee9GrqkBg3gLOrnu8fNdz7gEO:C0xPCXLCsIakq6R3te4C6b9Ee9aqkWws
TLSH T1C7F412987698CEADDAFB53B91D31E37102B0ED8CE635D3929DC45CEB7C2670499083A1
TrID 71.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.2% (.EXE) Win64 Executable (generic) (10522/11/4)
6.3% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.3% (.EXE) Win32 Executable (generic) (4504/4/1)
2.0% (.ICL) Windows Icons Library (generic) (2059/9)
Magika pebin
dhash icon 8e8eaa70e968e8c8 (2 x SnakeKeylogger, 2 x Formbook, 1 x MassLogger)
Reporter threatcat_ch
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
513
Origin country :
CH CH
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
bq0WOI4IP84Va7A.bat
Verdict:
No threats detected
Analysis date:
2025-03-19 05:39:20 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/b812da63-e1c2-41fa-9592-74706e50f7de

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Trojan.PackedNET.3277.14643.209.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
99.1%
Link:
https://cyber-fortress.com/docs/result/index.php?id=67da634b194f23322a71083a
Tags:
shell virus msil
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Сreating synchronization primitives
Creating a process with a hidden window
Unauthorized injection to a recently created process
Restart of the analyzed sample
Creating a file
Adding an exclusion to Microsoft Defender
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
masquerade obfuscated packed packed packer_detected
Link:
https://www.filescan.io/uploads/67da5805d2c4beeae927f354/reports/a210bda7-12bf-463a-8e0b-6cd4b58cdf4e/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/c8c237670713836f584e4d9e740d1f8d302ab223e60c01790d18d06eef978387
Result
Verdict:
SUSPICIOUS
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:
Agent Tesla
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Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/5e7b08e5-0032-4d76-9d3c-9dffc364fadd
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1642549
Signature
.NET source code contains potential unpacker
Adds a directory exclusion to Windows Defender
Antivirus detection for URL or domain
Found direct / indirect Syscall (likely to bypass EDR)
Injects a PE file into a foreign processes
Joe Sandbox ML detected suspicious sample
Loading BitLocker PowerShell Module
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 submitted file
Performs DNS queries to domains with low reputation
Queues an APC in another process (thread injection)
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
Suricata IDS alerts for network traffic
Switches to a custom stack to bypass stack traces
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1642549 Sample: bq0WOI4IP84Va7A.bat.exe Startdate: 19/03/2025 Architecture: WINDOWS Score: 100 37 www.pagproseso.xyz 2->37 39 www.martpoint.site 2->39 41 4 other IPs or domains 2->41 49 Suricata IDS alerts for network traffic 2->49 51 Antivirus detection for URL or domain 2->51 53 Multi AV Scanner detection for submitted file 2->53 57 5 other signatures 2->57 10 bq0WOI4IP84Va7A.bat.exe 4 2->10         started        signatures3 55 Performs DNS queries to domains with low reputation 37->55 process4 file5 35 C:\Users\user\...\bq0WOI4IP84Va7A.bat.exe.log, ASCII 10->35 dropped 69 Adds a directory exclusion to Windows Defender 10->69 71 Injects a PE file into a foreign processes 10->71 14 bq0WOI4IP84Va7A.bat.exe 10->14         started        17 powershell.exe 23 10->17         started        signatures6 process7 signatures8 73 Maps a DLL or memory area into another process 14->73 19 a6RicdbMDA4X3UIp5cnEd.exe 14->19 injected 75 Loading BitLocker PowerShell Module 17->75 22 WmiPrvSE.exe 17->22         started        24 conhost.exe 17->24         started        process9 signatures10 59 Found direct / indirect Syscall (likely to bypass EDR) 19->59 26 PATHPING.EXE 13 19->26         started        process11 signatures12 61 Tries to steal Mail credentials (via file / registry access) 26->61 63 Tries to harvest and steal browser information (history, passwords, etc) 26->63 65 Modifies the context of a thread in another process (thread injection) 26->65 67 3 other signatures 26->67 29 a6RicdbMDA4X3UIp5cnEd.exe 26->29 injected 33 firefox.exe 26->33         started        process13 dnsIp14 43 pixelplace.shop 190.92.174.28, 49738, 49739, 49740 DesarrollosDigitalesdePulsarConsultingAR Argentina 29->43 45 www.pagproseso.xyz 13.248.169.48, 49730, 49731, 49732 AMAZON-02US United States 29->45 47 2 other IPs or domains 29->47 77 Found direct / indirect Syscall (likely to bypass EDR) 29->77 signatures15
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/c8c237670713836f584e4d9e740d1f8d302ab223e60c01790d18d06eef978387
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/c8c237670713836f584e4d9e740d1f8d302ab223e60c01790d18d06eef978387/
Threat name:
Win32.Backdoor.FormBook
Create hunting rule
Status:
Malicious
First seen:
2025-03-19 05:26:04 UTC
File Type:
PE (.Net Exe)
Extracted files:
6
AV detection:
20 of 24 (83.33%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=zdbdozyhcobw6wcojwphidi7ruycvmrd4ygac6inddig534xqodq._file
Verdict:
malicious
Label(s):
formbook
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unc_loader_037
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Similar samples:
error
Formbook
Result
Malware family:
n/a
Score:
  8/10
Tags:
discovery execution
Link:
https://tria.ge/reports/250319-ga7n4swq13/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Checks computer location settings
Command and Scripting Interpreter: PowerShell
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/fbfa3a97-10a1-4da9-a4fd-d65b8801c557
Unpacked files
SH256 hash:
c8c237670713836f584e4d9e740d1f8d302ab223e60c01790d18d06eef978387
MD5 hash:
8c0aa48459ffd620b65440ce711718b5
SHA1 hash:
95eb75c881afeeea670810083fcbad39e8466138
Link:
https://www.unpac.me/results/da293b61-a20e-4b3c-a078-fede6cdd7c8f/
SH256 hash:
a75501ed93792a4db03b97576a1af09fedaf7241c5ba7c7dade775dadf6c6cc1
MD5 hash:
984683d9f9a7382a05ae4816736e0989
SHA1 hash:
00338516db2399bfb60c852f26c71078c88953eb
Link:
https://www.unpac.me/results/da293b61-a20e-4b3c-a078-fede6cdd7c8f/
SH256 hash:
f97420b1d1ef7cb43399180b419cd381b2f23cc65cb844820fc5b101377091b5
MD5 hash:
7626aeef3ce1ccdd41f40376befc85a2
SHA1 hash:
5da2d0deea9f6e72923fd03340b39609f1b0b58b
Detections:
SUSP_OBF_NET_ConfuserEx_Name_Pattern_Jan24
Create hunting rule
SUSP_OBF_NET_Reactor_Indicators_Jan24
Create hunting rule
Link:
https://www.unpac.me/results/da293b61-a20e-4b3c-a078-fede6cdd7c8f/
SH256 hash:
802b04f2b5c820f15989b100a4b5e7a99ac56b2a3f01f2341f562a0d880d1134
MD5 hash:
fa96121e50b2ae16f872c49b429059c8
SHA1 hash:
ac0c9af30c310423f4dcb77037e2568a2c3c8387
Link:
https://www.unpac.me/results/da293b61-a20e-4b3c-a078-fede6cdd7c8f/
SH256 hash:
8e35f36a92e354c8508f4318bd86940e207f5f4ea8f0306deb58331347365b97
MD5 hash:
3a44da4c55f00fa37d4503e7c355a48c
SHA1 hash:
28ee33cc1213a86043ed373600971b5328daf4e7
Link:
https://www.unpac.me/results/da293b61-a20e-4b3c-a078-fede6cdd7c8f/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/c8c237670713/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/c8c237670713836f584e4d9e740d1f8d302ab223e60c01790d18d06eef978387

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:NET
Create hunting rule
Author:malware-lu
Rule name:pe_imphash
Create hunting rule
Rule name:pe_no_import_table
Create hunting rule
Description:Detect pe file that no import table
Rule name:shellcode
Create hunting rule
Author:nex
Description:Matched shellcode byte patterns
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:Sus_Obf_Enc_Spoof_Hide_PE
Create hunting rule
Author:XiAnzheng
Description:Check for Overlay, Obfuscating, Encrypting, Spoofing, Hiding, or Entropy Technique(can create FP)

File information

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

Malspam

Formbook

Executable exe c8c237670713836f584e4d9e740d1f8d302ab223e60c01790d18d06eef978387

(this sample)

  
Delivery method
Distributed via e-mail attachment

BLint

The following table provides more information about this file using BLint. BLint is a Binary Linter to check the security properties, and capabilities in executables.

Findings
IDTitleSeverity
CHECK_AUTHENTICODEMissing Authenticodehigh
CHECK_DLL_CHARACTERISTICSMissing dll Security Characteristics (HIGH_ENTROPY_VA)high

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