MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c90c85de9f7413b7ab31ddb5035a74d5d7e33cba90e9ce4585de7c659d27232b. 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: 16

Intelligence 16 IOCs YARA 21 File information Comments

SHA256 hash:	c90c85de9f7413b7ab31ddb5035a74d5d7e33cba90e9ce4585de7c659d27232b
SHA3-384 hash:	0275a17f602ac77acf104c0a4848a5a648dc52a71646db81d66f86168334e5544430b00c46382defe82628ddaf782f05
SHA1 hash:	15058e42a7d5e31944515d66e13f67b188b49c37
MD5 hash:	52d7080caa4670f8fa5e2e3424946392
humanhash:	speaker-artist-equal-virginia
File name:	c90c85de9f7413b7ab31ddb5035a74d5d7e33cba90e9ce4585de7c659d27232b
Download:	download sample
Signature	Formbook Create hunting rule
File size:	768'000 bytes
First seen:	2025-10-10 06:48:24 UTC
Last seen:	Never
File type:	exe
MIME type:	application/x-dosexec
imphash	f34d5f2d4577ed6d9ceec516c1f5a744 (48'747 x AgentTesla, 19'638 x Formbook, 12'244 x SnakeKeylogger)
ssdeep	12288:8mSJx7untvfhIPQvZf6mKFDhLoacYAs8X7TCmXAPvsz5dGaNU5HkT3UhqVPmoUSH:8Hv7wpfyIvZymKFDhE/HsgCKAPvuHFwd
Threatray	2'005 similar samples on MalwareBazaar
TLSH	T115F402A9275EED03C8510FB419B0D3B5037CAEC8A510C7079FFABD9B7C3A25658942A7
TrID	69.7% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13) 10.0% (.EXE) Win64 Executable (generic) (10522/11/4) 6.2% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2) 4.2% (.EXE) Win32 Executable (generic) (4504/4/1) 1.9% (.EXE) Win16/32 Executable Delphi generic (2072/23)
Magika	pebin
Reporter	adrian__luca
Tags:	exe FormBook

Intelligence

File Origin

# of uploads :

# of downloads :

Origin country :

Vendor Threat Intelligence

Malware family:

n/a

ID:

File name:

c90c85de9f7413b7ab31ddb5035a74d5d7e33cba90e9ce4585de7c659d27232b

Verdict:

Malicious activity

Analysis date:

2025-10-10 11:07:51 UTC

Tags:

auto-sch-xml

Link:

https://app.any.run/tasks/aa943eca-1e7a-42e5-a88c-f692aa8602cd

Note:

ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample

Detection:

Formbook

Link:

https://www.capesandbox.com/analysis/32188/

Verdict:

Malicious

Score:

99.1%

Link:

https://cyber-fortress.com/docs/result/index.php?id=68e8ae318b7b147cc4b68ec6

Tags:

micro spawn shell

Result

Verdict:

Malware

Maliciousness:

Behaviour

Creating a window

Sending a custom TCP request

Сreating synchronization primitives

Creating a process with a hidden window

Creating a file in the %AppData% directory

Enabling the 'hidden' option for recently created files

Adding an access-denied ACE

Creating a file in the %temp% directory

Launching a process

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

Enabling autorun by creating a file

Verdict:

Likely Malicious

Threat level:

7.5/10

Confidence:

100%

Tags:

barys obfuscated packed packed packer_detected vbnet

Link:

https://www.filescan.io/uploads/68e8b9d94f3013c55e4945c6/reports/1c21b908-7dc3-4349-ae24-2c120ce1a1ed/overview

Verdict:

Malicious

Labled as:

Jalapeno.Generic

Link:

https://www.hybrid-analysis.com/sample/c90c85de9f7413b7ab31ddb5035a74d5d7e33cba90e9ce4585de7c659d27232b

Verdict:

Malicious

File Type:

exe x32

First seen:

2025-09-16T23:28:00Z UTC

Last seen:

2025-10-12T03:45:00Z UTC

Hits:

~100

Link:

https://opentip.kaspersky.com/c90c85de9f7413b7ab31ddb5035a74d5d7e33cba90e9ce4585de7c659d27232b/results?tab=lookup

Malware family:

Formbook

Verdict:

Malicious

Link:

https://analyze.intezer.com/analyses/86f7456c-3d93-4b7b-8d67-889dbefb7b28

Score:

100%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/c90c85de9f7413b7ab31ddb5035a74d5d7e33cba90e9ce4585de7c659d27232b

Verdict:

inconclusive

YARA:

10 match(es)

Tags:

.Net Executable Managed .NET PDB Path PE (Portable Executable) PE File Layout SOS: 0.29 Win 32 Exe x86

Link:

https://app.malva.re/file/52d7080caa4670f8fa5e2e3424946392

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/c90c85de9f7413b7ab31ddb5035a74d5d7e33cba90e9ce4585de7c659d27232b/

Threat name:

ByteCode-MSIL.Backdoor.FormBook

Status:

Malicious

First seen:

2025-09-17 02:13:10 UTC

File Type:

PE (.Net Exe)

Extracted files:

AV detection:

29 of 38 (76.32%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=zegilxu7oqj3pkzr3w2qgwtu2xl6gpf2sdu44rmf3z6glhjhemvq._file

Verdict:

malicious

Label(s):

unc_loader_078

unc_loader_037

Result

Malware family:

n/a

Score:

8/10

Tags:

discovery execution persistence

Link:

https://tria.ge/reports/251010-jl5p1ahl3t/

Behaviour

Scheduled Task/Job: Scheduled Task

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

System Location Discovery: System Language Discovery

Enumerates physical storage devices

Program crash

Suspicious use of SetThreadContext

Checks computer location settings

Executes dropped EXE

Command and Scripting Interpreter: PowerShell

Verdict:

Suspicious

Tags:

n/a

YARA:

n/a

Link:

https://app.threat.zone/submission/fcd06ea7-0abe-4886-96fe-a756087f3f77

Unpacked files

SH256 hash:

c90c85de9f7413b7ab31ddb5035a74d5d7e33cba90e9ce4585de7c659d27232b

MD5 hash:

52d7080caa4670f8fa5e2e3424946392

SHA1 hash:

15058e42a7d5e31944515d66e13f67b188b49c37

Link:

https://www.unpac.me/results/8533cf8f-72aa-4c59-9f61-d17fa7232f83/

SH256 hash:

3e674b562fe0906e2cd4769ba39466254cfeafb473d8900000dd42d47b5719bb

MD5 hash:

506336e740ccff4d4f5d5bc03bf83c0b

SHA1 hash:

43e9121ca476f98b0e629bca933eb9ebee10fe31

Link:

https://www.unpac.me/results/8533cf8f-72aa-4c59-9f61-d17fa7232f83/

SH256 hash:

b2ac00d97c373c7efe7b9a54ce8b9f8b317ef919f29c45e3cdcfac3545674800

MD5 hash:

3d4e92fe67d6c1780f213fd51c36df1f

SHA1 hash:

8285892de43aa6bf4fd6bb52d05c937095c7b1be

Link:

https://www.unpac.me/results/8533cf8f-72aa-4c59-9f61-d17fa7232f83/

SH256 hash:

6d75254e371685fe661c780509eb0538dd5570624b891fb05aa255cb28fe04cc

MD5 hash:

ef67f1866338b7c63c439ee2d362ff17

SHA1 hash:

8ad09b416a75dfe3a1860d01b6acc529db26feb1

Detections:

SUSP_OBF_NET_ConfuserEx_Name_Pattern_Jan24

SUSP_OBF_NET_Reactor_Indicators_Jan24

Link:

https://www.unpac.me/results/8533cf8f-72aa-4c59-9f61-d17fa7232f83/

SH256 hash:

0d9a7bd65a7b99d26081d42ea1b0362a273a6b7fbaa7be96d783b86e75cf4b86

MD5 hash:

1954acaa3f9a95bc9870a18817205af8

SHA1 hash:

8cb14f83c8ef2f5278aa8d9b2d7864b5cb50fe3a

Detections:

win_formbook_g0

Link:

https://www.unpac.me/results/8533cf8f-72aa-4c59-9f61-d17fa7232f83/

Parent samples :

c3bce19ca32fe499888cec1530bef701ba3d11d7fba776945a2e1245cb162a38
c90c85de9f7413b7ab31ddb5035a74d5d7e33cba90e9ce4585de7c659d27232b

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/c90c85de9f7413b7ab31ddb5035a74d5d7e33cba90e9ce4585de7c659d27232b

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:	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:	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

https://www.capesandbox.com/analysis/32188/

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