MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 8958957f28d6d109287facfd2d9e537c35000b5cdae8418f976a5bf9070e1256. 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: 19


Intelligence 19 IOCs YARA 6 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 8958957f28d6d109287facfd2d9e537c35000b5cdae8418f976a5bf9070e1256
SHA3-384 hash: 4f56aa32a239c34093080c2d4ea9610c16385a00819d6cc92e19f83593a6b882d7dbc7c3e1fb86c195fd509da0fc15e2
SHA1 hash: e65784c82480eac9c1b3457dc1c475f957373205
MD5 hash: b2ed3376117ca429c17fb13998b99a48
humanhash: butter-nevada-north-batman
File name:SecuriteInfo.com.W32.MSIL_Kryptik.MJN.gen.Eldorado.29329.18429
Download: download sample
Signature Formbook
Create hunting rule
File size:772'096 bytes
First seen:2025-09-17 17:20:17 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 12288:QsjZm3qjCN2AebcJlu3SkjLo0oyjtsoJABy57LfekqNS5LL8MVMM5UdHC3Y4BvdN:QVmk2Z3SMjtsQ5/fekKe38+FUs9dvd
TLSH T1D2F41219265AED03D9A12BF05870D3701B786EDCBD11D3039EEA7DEBB836B825940683
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 SecuriteInfoCom
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
118
Origin country :
FR FR
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
SecuriteInfo.com.W32.MSIL_Kryptik.MJN.gen.Eldorado.29329.18429
Verdict:
Malicious activity
Analysis date:
2025-09-17 17:25:29 UTC
Tags:
formbook xloader
Link:
https://app.any.run/tasks/f99ef9f8-df39-4593-a877-e920bb303ecb

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/27978/
Verdict:
Malicious
Score:
81.4%
Link:
https://cyber-fortress.com/docs/result/index.php?id=68caee1388b95443924755a5
Tags:
stration spawn shell
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Creating a process with a hidden 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)
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/68caee215ebd1d861ec4d48f/reports/0990668a-536c-4347-8ed8-563721a9cdf7/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/8958957f28d6d109287facfd2d9e537c35000b5cdae8418f976a5bf9070e1256
Verdict:
Malicious
File Type:
exe x32
First seen:
2025-09-17T13:32:00Z UTC
Last seen:
2025-09-17T13:32:00Z UTC
Hits:
~100
Link:
https://opentip.kaspersky.com/8958957f28d6d109287facfd2d9e537c35000b5cdae8418f976a5bf9070e1256/results?tab=lookup
Malware family:
Formbook
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/8f6f9575-971e-4655-988e-37b2094aaacf
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/8958957f28d6d109287facfd2d9e537c35000b5cdae8418f976a5bf9070e1256
Verdict:
inconclusive
YARA:
5 match(es)
Tags:
.Net Executable Managed .NET PDB Path PE (Portable Executable) PE File Layout SOS: 0.40 Win 32 Exe x86
Link:
https://app.malva.re/file/b2ed3376117ca429c17fb13998b99a48
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/8958957f28d6d109287facfd2d9e537c35000b5cdae8418f976a5bf9070e1256/
Threat name:
ByteCode-MSIL.Trojan.DarkCloud
Create hunting rule
Status:
Malicious
First seen:
2025-09-17 17:22:42 UTC
File Type:
PE (.Net Exe)
Extracted files:
9
AV detection:
29 of 38 (76.32%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=rfmjk7zi23iqskd7vt6s3hstpq2qac243luedd4xnjn7sbyocjla._file
Verdict:
malicious
Label(s):
unc_loader_037
Create hunting rule
Similar samples:
error
Formbook
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook discovery execution rat spyware stealer trojan
Link:
https://tria.ge/reports/250917-vxajsaaj3t/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Program crash
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Checks computer location settings
Command and Scripting Interpreter: PowerShell
Formbook payload
Formbook
Formbook family
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/bd348fd7-9801-4e00-8257-7f0d4ca41a2c
Unpacked files
SH256 hash:
8958957f28d6d109287facfd2d9e537c35000b5cdae8418f976a5bf9070e1256
MD5 hash:
b2ed3376117ca429c17fb13998b99a48
SHA1 hash:
e65784c82480eac9c1b3457dc1c475f957373205
Link:
https://www.unpac.me/results/ab61eb67-8be8-49e9-98bb-4420db3fe906/
SH256 hash:
22eacd4e01c2b1293e754d2861d922603411ca7ab9a1d12759fccd220dd4b2cf
MD5 hash:
da1348b1f322167b2370afc0c0471c0c
SHA1 hash:
79429b4cc746d67e7dd107fdded5380b8a879bbc
Link:
https://www.unpac.me/results/ab61eb67-8be8-49e9-98bb-4420db3fe906/
SH256 hash:
1041b538ccbc7d66e59247ef7551cde9b6c282843541585e9190a8e2e3943b12
MD5 hash:
e870d1e8f3791ccc141f85f40fd2972b
SHA1 hash:
150919ee289cffa6feb40ab8261f620dd7e26aac
Link:
https://www.unpac.me/results/ab61eb67-8be8-49e9-98bb-4420db3fe906/
SH256 hash:
23134001b91e28af1bc7d9baaf101a282d032541d1ffbeec774891f5fca09a31
MD5 hash:
c6b73f7f17fd29a2f012475f9faede02
SHA1 hash:
c8a3fafeb9fad905b67e0c39c3137dd23d510011
Link:
https://www.unpac.me/results/ab61eb67-8be8-49e9-98bb-4420db3fe906/
SH256 hash:
85362c43769cdd92fce30fb6cea0915efd7ae290d4733c45f87b85e331d86430
MD5 hash:
920ac092feea13fea990fb13a6d727c1
SHA1 hash:
cd83f9203f031c7ccb6e4fc7d1e3b833ab619e9f
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/ab61eb67-8be8-49e9-98bb-4420db3fe906/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/8958957f28d6/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/8958957f28d6d109287facfd2d9e537c35000b5cdae8418f976a5bf9070e1256

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:CP_AllMal_Detector
Create hunting rule
Author:DiegoAnalytics
Description:CrossPlatform All Malwares Detector: Detect PE, ELF, Mach-O, scripts, archives; overlay, obfuscation, encryption, spoofing, hiding, high entropy, network communication
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

File information

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

Cape
Cape
https://www.capesandbox.com/analysis/27978/

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