MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4ab3a5cc0dbb6052c34d1e1b1f3ca48fca69e9a2834d4b15b4addda3ccdcc617. 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: 15


Intelligence 15 IOCs YARA 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 4ab3a5cc0dbb6052c34d1e1b1f3ca48fca69e9a2834d4b15b4addda3ccdcc617
SHA3-384 hash: dbab8504d67c5a5effaa66c4c2ac1c1b77bd7079915998efbf61fd0fa212cd16ae0ee03ad3d5fec2baaa56fd1dea7182
SHA1 hash: ef25677bd1d6acf52a7cd05663b4f2c26a45dc26
MD5 hash: 2cf936b3a5f311134f345f3b92debf19
humanhash: berlin-march-leopard-oranges
File name:MVSL_BUNKER INQUIRY.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:718'336 bytes
First seen:2025-03-14 09:07:32 UTC
Last seen:2025-03-14 09:31:36 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'666 x AgentTesla, 19'479 x Formbook, 12'209 x SnakeKeylogger)
ssdeep 12288:Nq5MOiV1F9YbsWkbg9pPeBqjfNl1La2/MrIPS6Ne/PqXBnCeFr1k:Nq5MOiX0o+pmBqh3LBMrz6U/PqXBnxk
TLSH T12FE41254671ACEA5FEE413750A31D73653B8AF6DE0118383CED9ECE7BC20371A81919A
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 0000000000000000 (872 x AgentTesla, 496 x Formbook, 296 x RedLineStealer)
Reporter threatcat_ch
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
403
Origin country :
CH CH
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
MVSL_BUNKER INQUIRY.exe
Verdict:
No threats detected
Analysis date:
2025-03-14 09:08:21 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/f34249f6-b459-4347-ac67-5af41f64bae2

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Malicious
Score:
91.7%
Link:
https://cyber-fortress.com/docs/result/index.php?id=67d4037b3962f1a6f47133ec
Tags:
shell virus micro
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:
obfuscated packed packed packer_detected vbnet
Link:
https://www.filescan.io/uploads/67d3f1f60a7899f35795babd/reports/ffb019f1-012a-4cbf-b37a-47098dc1c79b/overview
Verdict:
Malicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/4ab3a5cc0dbb6052c34d1e1b1f3ca48fca69e9a2834d4b15b4addda3ccdcc617
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/b42baa86-971b-4c63-a59b-08fd5341801a
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1638232
Signature
.NET source code contains potential unpacker
Adds a directory exclusion to Windows Defender
Antivirus / Scanner detection for submitted sample
Antivirus detection for URL or domain
Found direct / indirect Syscall (likely to bypass EDR)
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
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: 1638232 Sample: MVSL_BUNKER INQUIRY.exe Startdate: 14/03/2025 Architecture: WINDOWS Score: 100 35 www.nevath.xyz 2->35 37 www.conpactum.xyz 2->37 39 17 other IPs or domains 2->39 47 Antivirus detection for URL or domain 2->47 49 Antivirus / Scanner detection for submitted sample 2->49 51 Multi AV Scanner detection for submitted file 2->51 55 6 other signatures 2->55 10 MVSL_BUNKER INQUIRY.exe 4 2->10         started        signatures3 53 Performs DNS queries to domains with low reputation 37->53 process4 file5 33 C:\Users\user\...\MVSL_BUNKER INQUIRY.exe.log, ASCII 10->33 dropped 67 Adds a directory exclusion to Windows Defender 10->67 14 MVSL_BUNKER INQUIRY.exe 10->14         started        17 powershell.exe 23 10->17         started        signatures6 process7 signatures8 71 Maps a DLL or memory area into another process 14->71 19 f89rnyaBD.exe 14->19 injected 73 Loading BitLocker PowerShell Module 17->73 22 conhost.exe 17->22         started        process9 signatures10 57 Found direct / indirect Syscall (likely to bypass EDR) 19->57 24 wlanext.exe 13 19->24         started        process11 signatures12 59 Tries to steal Mail credentials (via file / registry access) 24->59 61 Tries to harvest and steal browser information (history, passwords, etc) 24->61 63 Modifies the context of a thread in another process (thread injection) 24->63 65 3 other signatures 24->65 27 f89rnyaBD.exe 24->27 injected 31 firefox.exe 24->31         started        process13 dnsIp14 41 www.nevath.xyz 203.161.42.73, 56977, 56978, 56979 VNPT-AS-VNVNPTCorpVN Malaysia 27->41 43 www.ethereumkeeper.xyz 13.248.169.48, 56945, 56947, 56949 AMAZON-02US United States 27->43 45 7 other IPs or domains 27->45 69 Found direct / indirect Syscall (likely to bypass EDR) 27->69 signatures15
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/4ab3a5cc0dbb6052c34d1e1b1f3ca48fca69e9a2834d4b15b4addda3ccdcc617
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/4ab3a5cc0dbb6052c34d1e1b1f3ca48fca69e9a2834d4b15b4addda3ccdcc617/
Threat name:
Win32.Exploit.Generic
Create hunting rule
Status:
Malicious
First seen:
2025-03-13 10:19:21 UTC
File Type:
PE (.Net Exe)
Extracted files:
7
AV detection:
24 of 38 (63.16%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=jkz2ltanxnqffq2ndynr6pfer7fgt2ncqnguwfnuvxo2htg4yylq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
unc_loader_037
Create hunting rule
Similar samples:
error
Formbook
Result
Malware family:
n/a
Score:
  8/10
Tags:
discovery execution
Link:
https://tria.ge/reports/250314-k3x7xs1jx2/
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/a480a169-6a28-485c-8e4f-29c5d925f47e
Unpacked files
SH256 hash:
4ab3a5cc0dbb6052c34d1e1b1f3ca48fca69e9a2834d4b15b4addda3ccdcc617
MD5 hash:
2cf936b3a5f311134f345f3b92debf19
SHA1 hash:
ef25677bd1d6acf52a7cd05663b4f2c26a45dc26
Link:
https://www.unpac.me/results/d6209d90-3f90-497f-9a5d-388f7fae5cf8/
SH256 hash:
a25e290bb64c283f315b98e903751761998db0ce47a9ac5963bdbef204275b9a
MD5 hash:
3c75e038ce683a90e77fdc9be828a1de
SHA1 hash:
22224063d2712fbb1b9e5a05a058742866becd31
Link:
https://www.unpac.me/results/d6209d90-3f90-497f-9a5d-388f7fae5cf8/
SH256 hash:
28a37c962feaade138cf9e8218c82cf66ca45ba063104169a3d15cdc9cba8448
MD5 hash:
dccb4b1e8709d305191e352c13f45d84
SHA1 hash:
9c10b6e718a8bece89674c29c14c0f58e7c05b9e
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/d6209d90-3f90-497f-9a5d-388f7fae5cf8/
SH256 hash:
298ac6a605fae0eacc8d7f10fc4085e951b18713e22962ef89545bfa6245f536
MD5 hash:
96d3df0ebeac48626ae9e805ebf76257
SHA1 hash:
d4be562661a96d8ac14141ed98036e588485d244
Link:
https://www.unpac.me/results/d6209d90-3f90-497f-9a5d-388f7fae5cf8/
SH256 hash:
599d3dbbcaf5ea0bfd495a797acd8e2c614949ca3147b75a50a8b5b16901f842
MD5 hash:
cd23e66b44d0fbf34f462871321a7fb0
SHA1 hash:
9d00b928d8e4c146a6d301d9b7be34ad4b9a3bbd
Link:
https://www.unpac.me/results/d6209d90-3f90-497f-9a5d-388f7fae5cf8/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/4ab3a5cc0dbb/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/4ab3a5cc0dbb6052c34d1e1b1f3ca48fca69e9a2834d4b15b4addda3ccdcc617

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:NETexecutableMicrosoft
Create hunting rule
Author:malware-lu
Rule name:pe_imphash
Create hunting rule
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 4ab3a5cc0dbb6052c34d1e1b1f3ca48fca69e9a2834d4b15b4addda3ccdcc617

(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 (GUARD_CF)high

Comments