MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f8f51f4644636178d7b4adba3f9214f7498774055b6e1922470c3c1330942107. 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 8 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: f8f51f4644636178d7b4adba3f9214f7498774055b6e1922470c3c1330942107
SHA3-384 hash: ddc10ed877b68e7d44afb2e51ad5e4f42e26e34f104be4643cfc635d63e186643e6879cf285413cd3c58995eda06318d
SHA1 hash: 7f0213911abf3e24cc1ebc0571c2067dfddea590
MD5 hash: abb52ba89b090dec4700b0d5675487ac
humanhash: jig-edward-pluto-undress
File name:f8f51f4644636178d7b4adba3f9214f7498774055b6e1922470c3c1330942107
Download: download sample
Signature Formbook
Create hunting rule
File size:816'128 bytes
First seen:2025-04-08 08:46:42 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'658 x AgentTesla, 19'469 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 24576:KTF9fn5rV1DCwK19B2OmBFEAYTaMQjnqL0mF6:Yzfn5rU19714qLX
Threatray 74 similar samples on MalwareBazaar
TLSH T1A805E0487269DF1ADAB58BF50621F23017F92D9FB12AE2194ECB6CEB7469F000D44B53
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
Reporter adrian__luca
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
331
Origin country :
HU HU
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
f8f51f4644636178d7b4adba3f9214f7498774055b6e1922470c3c1330942107
Verdict:
Suspicious activity
Analysis date:
2025-04-08 15:14:11 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/bfb0a752-ab55-451c-a736-8ed8c723c72c

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Malicious
Score:
94.1%
Link:
https://cyber-fortress.com/docs/result/index.php?id=67f4e4cea695a0cd1facb3fe
Tags:
virus micro msil
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Unauthorized injection to a recently created process
Restart of the analyzed sample
Creating a file
Searching for synchronization primitives
Launching the default Windows debugger (dwwin.exe)
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
obfuscated packed packed packer_detected vbnet
Link:
https://www.filescan.io/uploads/67f4e2992d430c849e0c8985/reports/a9fdab7c-df05-4bcf-a314-7cbd63222d35/overview
Verdict:
Malicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/f8f51f4644636178d7b4adba3f9214f7498774055b6e1922470c3c1330942107
Malware family:
Formbook
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/80598b3f-2bdc-4314-a5ad-5f474e332f15
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1659323
Signature
.NET source code contains potential unpacker
Antivirus / Scanner detection for submitted sample
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
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)
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: 1659323 Sample: mgqDKtYt6z.exe Startdate: 08/04/2025 Architecture: WINDOWS Score: 100 31 www.kekisi.xyz 2->31 33 www.dubaicarpark.xyz 2->33 35 15 other IPs or domains 2->35 45 Antivirus detection for URL or domain 2->45 47 Antivirus / Scanner detection for submitted sample 2->47 49 Multi AV Scanner detection for submitted file 2->49 53 4 other signatures 2->53 10 mgqDKtYt6z.exe 3 2->10         started        signatures3 51 Performs DNS queries to domains with low reputation 33->51 process4 file5 29 C:\Users\user\AppData\...\mgqDKtYt6z.exe.log, ASCII 10->29 dropped 65 Injects a PE file into a foreign processes 10->65 14 mgqDKtYt6z.exe 10->14         started        signatures6 process7 signatures8 67 Maps a DLL or memory area into another process 14->67 17 BKFlOzOp22cvuWMQ11w.exe 14->17 injected process9 signatures10 43 Found direct / indirect Syscall (likely to bypass EDR) 17->43 20 TSTheme.exe 13 17->20         started        process11 signatures12 55 Tries to steal Mail credentials (via file / registry access) 20->55 57 Tries to harvest and steal browser information (history, passwords, etc) 20->57 59 Modifies the context of a thread in another process (thread injection) 20->59 61 3 other signatures 20->61 23 BKFlOzOp22cvuWMQ11w.exe 20->23 injected 27 firefox.exe 20->27         started        process13 dnsIp14 37 www.nexthorizon.website 162.254.32.71, 49724, 49725, 49726 VIVIDHOSTINGUS United States 23->37 39 www.geopet.store 103.224.182.242, 49716, 49717, 49718 TRELLIAN-AS-APTrellianPtyLimitedAU Australia 23->39 41 9 other IPs or domains 23->41 63 Found direct / indirect Syscall (likely to bypass EDR) 23->63 signatures15
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/f8f51f4644636178d7b4adba3f9214f7498774055b6e1922470c3c1330942107
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/f8f51f4644636178d7b4adba3f9214f7498774055b6e1922470c3c1330942107/
Threat name:
ByteCode-MSIL.Trojan.CrypterX
Create hunting rule
Status:
Malicious
First seen:
2025-03-30 15:55:30 UTC
File Type:
PE (.Net Exe)
Extracted files:
21
AV detection:
19 of 24 (79.17%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=7d2r6rsemnqxrv5uvw5d7equ65eyo5aflnxbsishbq6bgmeueedq._file
Verdict:
malicious
Label(s):
unc_loader_037
Create hunting rule
formbook
Create hunting rule
Similar samples:
413afb58c7726edb41ee39f2f6a151990187b21628a068806226b97455dfa4e6
Formbook
5dc2790fddfb80029dc4e2fe2ff5a9ef0e1f9d57fe27c10e2073f77aad2889ef
Formbook
7e3a485080e55e3d34ac4f5a4a019160c1d20dd5e19da336c851afabc7169252
Formbook
7e6f3a59c25802e0ac8ad91502b3b5ac25775195d7447b870cf4c28f9aa0db5f
Formbook
da53346d61e2da0fe14ced8a383cc11242a96f55159b1cd443e41986c7998557
Formbook
error
Formbook
f8f51f4644636178d7b4adba3f9214f7498774055b6e1922470c3c1330942107
Formbook
+ 64 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  5/10
Tags:
discovery
Link:
https://tria.ge/reports/250408-kp2m7asl17/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Program crash
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/3a7a5d73-b62a-4076-9897-a4552de3a677
Unpacked files
SH256 hash:
f8f51f4644636178d7b4adba3f9214f7498774055b6e1922470c3c1330942107
MD5 hash:
abb52ba89b090dec4700b0d5675487ac
SHA1 hash:
7f0213911abf3e24cc1ebc0571c2067dfddea590
Link:
https://www.unpac.me/results/90070a03-4aed-4b5b-8ea9-b627a7e6dfb7/
SH256 hash:
65f0880737b9a2dbf00faa12e37e679b8a1232237df736360fcc14e19e806cca
MD5 hash:
f22fece115e9c0f99bf3bff82d4fb834
SHA1 hash:
034e911420fad38712fb1200d9ff116af39a7cd4
Link:
https://www.unpac.me/results/90070a03-4aed-4b5b-8ea9-b627a7e6dfb7/
SH256 hash:
891fa39584afe226f707ef7e81d632edf1872a373d52b7fa401e4e3902d5287c
MD5 hash:
3fca0e4d667fb746cd0b835ff0a0b75e
SHA1 hash:
2262e207ec236658c4e6be849a40752bc7247229
Link:
https://www.unpac.me/results/90070a03-4aed-4b5b-8ea9-b627a7e6dfb7/
SH256 hash:
4dcdbad5a47b154c8b14b5fe14710c17099236d04cdc4359f8ee3923c27d6a99
MD5 hash:
c71f75c47f17b6154ff7cdc517cfc450
SHA1 hash:
32f9aa6ea1ce82a646cbe1ca677407a1cd368b6c
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/90070a03-4aed-4b5b-8ea9-b627a7e6dfb7/
SH256 hash:
074c3435940d9fe7c4b36a773dc8c6f9fa4e34e4cba4e5964389ce15114b0b49
MD5 hash:
ed3ab851b6c1537f451ef4b4c6de899a
SHA1 hash:
ae72394938b9ab7e7cc5b2e818cd6a834e9effa6
Link:
https://www.unpac.me/results/90070a03-4aed-4b5b-8ea9-b627a7e6dfb7/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/f8f51f464463/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:AgentTesla_DIFF_Common_Strings_01
Create hunting rule
Author:schmidtsz
Description:Identify partial Agent Tesla strings
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: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.

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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