MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 100dee1435e5c1b8e15c6b354723199d6bb76e7085214987908abfdd8e9a7835. 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 10 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 100dee1435e5c1b8e15c6b354723199d6bb76e7085214987908abfdd8e9a7835
SHA3-384 hash: fc736860f233a8c8bbfe401a695f630853449a8db3631005d148d42f038257de931e095a0ffb6b7821bf36063ddb3868
SHA1 hash: e2d33bbcb1f52965d368bb65639e878d364cd20e
MD5 hash: d3010925a9deb49ccfbefc0734b20d35
humanhash: foxtrot-alaska-oscar-carolina
File name:100dee1435e5c1b8e15c6b354723199d6bb76e7085214987908abfdd8e9a7835
Download: download sample
Signature Formbook
Create hunting rule
File size:822'784 bytes
First seen:2025-10-09 14:42:41 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'740 x AgentTesla, 19'600 x Formbook, 12'241 x SnakeKeylogger)
ssdeep 12288:cMrXPdKnQazcKikU42gotangwPM0eVppSY/eggSzhMywHRfSfJjOEBHOpo:VlKnT/NU4rotanT9E/eggy4Rsup
Threatray 1'866 similar samples on MalwareBazaar
TLSH T1B505124132E9EB06C4B64FF01570D374173AAE95A516D30A4EE5BCEF7C36B422E09267
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 :
64
Origin country :
HU HU
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
100dee1435e5c1b8e15c6b354723199d6bb76e7085214987908abfdd8e9a7835
Verdict:
No threats detected
Analysis date:
2025-10-09 20:21:24 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/9af25365-fbbf-4fd5-a7ab-77d5366d46a4

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/31647/
Verdict:
Malicious
Score:
99.1%
Link:
https://cyber-fortress.com/docs/result/index.php?id=68e7cbd67f305fa2545e036e
Tags:
virus shell msil
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:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
negasteal obfuscated packed packed packer_detected
Link:
https://www.filescan.io/uploads/68e7dcc7d4a0085473c5ac95/reports/6260255d-4832-43fc-93d2-757c258acce5/overview
Verdict:
Malicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/100dee1435e5c1b8e15c6b354723199d6bb76e7085214987908abfdd8e9a7835
Verdict:
Malicious
File Type:
exe x32
First seen:
2025-09-24T01:46:00Z UTC
Last seen:
2025-10-09T10:08:00Z UTC
Hits:
~1000
Link:
https://opentip.kaspersky.com/100dee1435e5c1b8e15c6b354723199d6bb76e7085214987908abfdd8e9a7835/results?tab=lookup
Verdict:
Suspicious
Link:
https://analyze.intezer.com/analyses/dd009094-ea81-455c-b0f8-19ee5279c837
Score:
99%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/100dee1435e5c1b8e15c6b354723199d6bb76e7085214987908abfdd8e9a7835
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/d3010925a9deb49ccfbefc0734b20d35
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/100dee1435e5c1b8e15c6b354723199d6bb76e7085214987908abfdd8e9a7835/
Threat name:
ByteCode-MSIL.Spyware.Negasteal
Create hunting rule
Status:
Malicious
First seen:
2025-09-24 07:49:31 UTC
File Type:
PE (.Net Exe)
Extracted files:
33
AV detection:
24 of 36 (66.67%)
Threat level:
  2/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=cag64fbv4xa3ryk4nm2uoiyztvv3o3tqququtb4qrk753du2pa2q._file
Verdict:
malicious
Label(s):
unc_loader_078
Create hunting rule
unc_loader_037
Create hunting rule
Similar samples:
3fc1ea56d5615af7499a2bb9a8bd1a0940a330954fc09a50f0605bd0628807d2
Formbook
5f9b01b88c7faf63239a79405c1f7c5521b9cfd1934c659a8c56345ad1549d17
Formbook
6cd04e6c9e273dda6da56883af6f2f2653feb111b60d5b2af02e021d5256e8fa
Formbook
bce46d675d57b09b2bf85f109ab3cdd12c7894519b8ba37426601dd18eb03671
Formbook
c374f2998fc7dcbc0c3e559a1dfcdf4b2729a12ea1783ead0624a1553a8bacf1
Formbook
c55443835b9da7ef3fd8e804969c806713c352c5fbdbe8e673e348f9588e7189
Formbook
+ 1'856 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook discovery execution rat spyware stealer trojan
Link:
https://tria.ge/reports/251009-tgxhyawshz/
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/77069674-7e50-4548-8a4b-aae3453dd58a
Unpacked files
SH256 hash:
100dee1435e5c1b8e15c6b354723199d6bb76e7085214987908abfdd8e9a7835
MD5 hash:
d3010925a9deb49ccfbefc0734b20d35
SHA1 hash:
e2d33bbcb1f52965d368bb65639e878d364cd20e
Link:
https://www.unpac.me/results/7469c1fb-a0a6-4b3d-a775-b2d93ecebbf2/
SH256 hash:
8d742f9c82306148f6db7a7a3a60cd863fd3f99bf12effdb06cec0e1b7cfd52a
MD5 hash:
ff294b4acb7c35b9baf8834633344f37
SHA1 hash:
4a7df3bfa2968bfbd29c2fedcaab888bc75da0f5
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/7469c1fb-a0a6-4b3d-a775-b2d93ecebbf2/
SH256 hash:
ca1afbbdb25b54e0d4c07f9b84b0413f52a43b6cde98879ad8ab8f4af072cc61
MD5 hash:
08b7c02de115f6bd6949b9cf47164d4b
SHA1 hash:
9307c830cedc68bfba8f518954c07c352cc063bc
Link:
https://www.unpac.me/results/7469c1fb-a0a6-4b3d-a775-b2d93ecebbf2/
SH256 hash:
cdb8ac92c7a341ee1ead563bf7b48a244d580acfb30704043b6d4b24ea5ccf09
MD5 hash:
07ca79c30cd50df8c68d115eebd52475
SHA1 hash:
a70c058086cd6156059b9947aee5bcd3f75f3336
Link:
https://www.unpac.me/results/7469c1fb-a0a6-4b3d-a775-b2d93ecebbf2/
SH256 hash:
a9a052597a34286cf778a5ad06f7f70f61712d1987f53a987c223d43b12073a9
MD5 hash:
e97357eb02eb9b699aad5c9c5990ef31
SHA1 hash:
5bc3719dbecef38e6087c7f70e0fd146343304da
Detections:
win_formbook_g0
Create hunting rule
Link:
https://www.unpac.me/results/7469c1fb-a0a6-4b3d-a775-b2d93ecebbf2/
Parent samples :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 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/100dee1435e5c1b8e15c6b354723199d6bb76e7085214987908abfdd8e9a7835

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:Formbook
Create hunting rule
Author:kevoreilly
Description:Formbook Payload
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: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/31647/

Comments