MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 3fc1ea56d5615af7499a2bb9a8bd1a0940a330954fc09a50f0605bd0628807d2. 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: 20


Intelligence 20 IOCs YARA 26 File information Comments
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SHA256 hash: 3fc1ea56d5615af7499a2bb9a8bd1a0940a330954fc09a50f0605bd0628807d2
SHA3-384 hash: 41844e4f9b6d33622d611ebacb373559c2330f6e154c2d4bd59166989ee52ea4af782df33c743bee86f59afac4eb0d8c
SHA1 hash: 196708fdb55b2d4a123c47beb8b0cea7c3aefdee
MD5 hash: 020bcefd5774185f627e72d63751702e
humanhash: hawaii-five-alaska-ceiling
File name:SecuriteInfo.com.Trojan.Siggen31.58115.13898.28507
Download: download sample
Signature Formbook
Create hunting rule
File size:819'200 bytes
First seen:2025-09-24 11:35:53 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'664 x AgentTesla, 19'478 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 12288:pMrXS+mW9+EPesDWj5RbXhCJkl/DXgIr6dmf0LTFGqTNzuP/c:QdmW9ZPjSj5yJ0rgWqNzuP/
TLSH T1D805021033E9DE02D0B74BF11570D3B05776AEA9B522D30D8ED56CEB7D39B421A062A7
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 :
124
Origin country :
FR FR
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
SecuriteInfo.com.Trojan.Siggen31.58115.13898.28507.exe
Verdict:
Malicious activity
Analysis date:
2025-09-24 11:39:57 UTC
Tags:
formbook xloader
Link:
https://app.any.run/tasks/7e12889c-8030-4a01-8448-f8df3466cf02

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/28779/
Detection(s):
SecuriteInfo.com.Trojan.Siggen31.58115.13898.28507.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
94.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=68d53f58cc9425144151cdb0
Tags:
stration shell spawn
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a custom TCP request
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
Link:
https://www.filescan.io/uploads/68d3d7c0674d5fd6aa0b16bc/reports/f0057cec-4caf-44c8-8d31-01a8e4afda9f/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/3fc1ea56d5615af7499a2bb9a8bd1a0940a330954fc09a50f0605bd0628807d2
Verdict:
Malicious
File Type:
exe x32
First seen:
2025-09-24T07:24:00Z UTC
Last seen:
2025-09-24T07:24:00Z UTC
Hits:
~1000
Detections:
VHO:Backdoor.Win32.Agent.gen PDM:Trojan.Win32.Generic HEUR:Trojan.MSIL.Taskun.gen Trojan-Spy.Win32.Noon.sb Trojan.MSIL.Taskun.sb Trojan.MSIL.Inject.sb Trojan.MSIL.Crypt.sb
Link:
https://opentip.kaspersky.com/3fc1ea56d5615af7499a2bb9a8bd1a0940a330954fc09a50f0605bd0628807d2/results?tab=lookup
Malware family:
Formbook
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/75bf514e-38f9-4b4b-bed3-47d1b112f4a6
Score:
99%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/3fc1ea56d5615af7499a2bb9a8bd1a0940a330954fc09a50f0605bd0628807d2
Verdict:
inconclusive
YARA:
10 match(es)
Tags:
.Net Executable Managed .NET PDB Path PE (Portable Executable) PE File Layout SOS: 0.16 Win 32 Exe x86
Link:
https://app.malva.re/file/020bcefd5774185f627e72d63751702e
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/3fc1ea56d5615af7499a2bb9a8bd1a0940a330954fc09a50f0605bd0628807d2/
Verdict:
Malicious
Threat:
Family.FORMBOOK
Link:
https://tip.neiki.dev/file/3fc1ea56d5615af7499a2bb9a8bd1a0940a330954fc09a50f0605bd0628807d2
Threat name:
ByteCode-MSIL.Spyware.Negasteal
Create hunting rule
Status:
Malicious
First seen:
2025-09-24 10:10:41 UTC
File Type:
PE (.Net Exe)
Extracted files:
33
AV detection:
26 of 38 (68.42%)
Threat level:
  2/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=h7a6uvwvmfnposm2fo42rpi2bfakgmevj7ajuuhqmbn5ayuia7ja._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/250924-nqt7aavkv2/
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/6071cb0c-ef4a-4583-92e8-de80a1f6ea53
Unpacked files
SH256 hash:
3fc1ea56d5615af7499a2bb9a8bd1a0940a330954fc09a50f0605bd0628807d2
MD5 hash:
020bcefd5774185f627e72d63751702e
SHA1 hash:
196708fdb55b2d4a123c47beb8b0cea7c3aefdee
Link:
https://www.unpac.me/results/3e526276-da5b-4271-9c10-888269cb2397/
SH256 hash:
e087b6769de29a91f3bf46ac5e680863c40e143dec8ec1533f2b0f4f744d7e96
MD5 hash:
f300d4d60fee865b9129dd93bdd30824
SHA1 hash:
5ac325089ae1677bcff3f37d25fad0577975aa3c
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/3e526276-da5b-4271-9c10-888269cb2397/
SH256 hash:
cdb8ac92c7a341ee1ead563bf7b48a244d580acfb30704043b6d4b24ea5ccf09
MD5 hash:
07ca79c30cd50df8c68d115eebd52475
SHA1 hash:
a70c058086cd6156059b9947aee5bcd3f75f3336
Link:
https://www.unpac.me/results/3e526276-da5b-4271-9c10-888269cb2397/
SH256 hash:
0fd8fbd3f9fea94bbfaa61d0b25e4d7e1f624338912296a8cd05fad3de6f7b64
MD5 hash:
c74b415bb180764d6b8031cec0cebe45
SHA1 hash:
ce2b7b025b572f8d797aee799d74f9bdee553fd7
Link:
https://www.unpac.me/results/3e526276-da5b-4271-9c10-888269cb2397/
SH256 hash:
f0cb55f264ecd2e074276bac9bb05156d4c1e9d0c7c32731ca0eab8e56cf8a93
MD5 hash:
652dc3ea284ef5640b37e3d3d844e440
SHA1 hash:
3b6aa4a5591245f8260304d65f5f7c2c6d175314
Link:
https://www.unpac.me/results/3e526276-da5b-4271-9c10-888269cb2397/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/3fc1ea56d561/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/3fc1ea56d5615af7499a2bb9a8bd1a0940a330954fc09a50f0605bd0628807d2

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:CP_Script_Inject_Detector
Create hunting rule
Author:DiegoAnalytics
Description:Detects attempts to inject code into another process across PE, ELF, Mach-O binaries
Rule name:DebuggerCheck__GlobalFlags
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerCheck__QueryInfo
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerHiding__Active
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerHiding__Thread
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DetectEncryptedVariants
Create hunting rule
Author:Zinyth
Description:Detects 'encrypted' in ASCII, Unicode, base64, or hex-encoded
Rule name:dgaagas
Create hunting rule
Author:Harshit
Description:Uses certutil.exe to download a file named test.txt
Rule name:Formbook
Create hunting rule
Author:kevoreilly
Description:Formbook Payload
Rule name:golang_bin_JCorn_CSC846
Create hunting rule
Author:Justin Cornwell
Description:CSC-846 Golang detection ruleset
Rule name:MD5_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for MD5 constants
Rule name:meth_stackstrings
Create hunting rule
Author:Willi Ballenthin
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:RIPEMD160_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for RIPEMD-160 constants
Rule name:SEH__vectored
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:SHA1_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for SHA1 constants
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/28779/

Comments