MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 1fdb37474b1d07f41110416a3381ff1810bd2b9a83e4e0313889f3a941d56ece. 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: 17

Intelligence 17 IOCs YARA 21 File information Comments

SHA256 hash:	1fdb37474b1d07f41110416a3381ff1810bd2b9a83e4e0313889f3a941d56ece
SHA3-384 hash:	762f3b2265950de5c6f41648719015186453ca1ef612cf9812f037915ebcf191bcd9c3aaff27b93900f814e5d6bed8a9
SHA1 hash:	2de2268a171953f215933b4b26521f445c107979
MD5 hash:	b08b7557bda34f808d579c212fea35fd
humanhash:	bakerloo-magazine-oxygen-three
File name:	1fdb37474b1d07f41110416a3381ff1810bd2b9a83e4e0313889f3a941d56ece
Download:	download sample
Signature	Formbook Create hunting rule
File size:	714'248 bytes
First seen:	2025-06-10 09:41:31 UTC
Last seen:	2025-06-20 10:11:13 UTC
File type:	exe
MIME type:	application/x-dosexec
imphash	f34d5f2d4577ed6d9ceec516c1f5a744 (48'747 x AgentTesla, 19'642 x Formbook, 12'245 x SnakeKeylogger)
ssdeep	12288:VepljYhzn6YMsiQgV8i23MzdNWsUX9i5mZxYW2ospJL1jCW4uWyAdKMlDRfJKSgG:8chzn6Uw9b5MxYWiJL1jCj8MwSn
Threatray	1 similar samples on MalwareBazaar
TLSH	T150E402987305D40BCA2157740A71F2B897BC1EDAA910C793AEEDAEDB78B6F111D041A3
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
dhash icon	e89e8e7133b2b2f0 (13 x SnakeKeylogger, 9 x Formbook, 3 x AgentTesla)
Reporter	adrian__luca
Tags:	exe FormBook

Intelligence

File Origin

# of uploads :

# of downloads :

385

Origin country :

Vendor Threat Intelligence

Malware family:

formbook

ID:

File name:

1fdb37474b1d07f41110416a3381ff1810bd2b9a83e4e0313889f3a941d56ece

Verdict:

Malicious activity

Analysis date:

2025-06-10 14:32:08 UTC

Tags:

formbook stealer xloader

Link:

https://app.any.run/tasks/e79f6078-170b-4b91-8e77-a33d736d5c46

Note:

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

Detection:

n/a

Link:

https://www.capesandbox.com/analysis/8572/

Verdict:

Malicious

Score:

99.1%

Link:

https://cyber-fortress.com/docs/result/index.php?id=6847fe018bd5d68a12e763cc

Tags:

n/a

Result

Verdict:

Malware

Maliciousness:

Behaviour

Creating a window

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

Creating a file

Launching cmd.exe command interpreter

Setting browser functions hooks

Adding an exclusion to Microsoft Defender

Enabling autorun by creating a file

Unauthorized injection to a system process

Unauthorized injection to a browser process

Verdict:

Malicious

Labled as:

Trojan.Generic

Link:

https://www.hybrid-analysis.com/sample/1fdb37474b1d07f41110416a3381ff1810bd2b9a83e4e0313889f3a941d56ece

Malware family:

Formbook

Verdict:

Malicious

Link:

https://analyze.intezer.com/analyses/0cd90e20-ad3a-4cba-933f-c3af34493fec

Result

Threat name:

FormBook

Detection:

malicious

Classification:

troj.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1711399

Signature

.NET source code contains potential unpacker

Adds a directory exclusion to Windows Defender

Allocates memory in foreign processes

C2 URLs / IPs found in malware configuration

Found malware configuration

Injects a PE file into a foreign processes

Joe Sandbox ML detected suspicious sample

Loading BitLocker PowerShell Module

Malicious sample detected (through community Yara rule)

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 dropped file

Multi AV Scanner detection for submitted file

Performs DNS queries to domains with low reputation

Queues an APC in another process (thread injection)

Sample uses process hollowing technique

Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet

Sigma detected: Rundll32 Execution Without CommandLine Parameters

Sigma detected: Scheduled temp file as task from temp location

Switches to a custom stack to bypass stack traces

Tries to detect virtualization through RDTSC time measurements

Uses schtasks.exe or at.exe to add and modify task schedules

Uses threadpools to delay analysis

Writes to foreign memory regions

Yara detected AntiVM3

Yara detected FormBook

Behaviour

Behavior Graph:

Download SVG

Score:

94%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/1fdb37474b1d07f41110416a3381ff1810bd2b9a83e4e0313889f3a941d56ece

Detection:

formbook

Link:

https://mwdb.cert.pl/sample/1fdb37474b1d07f41110416a3381ff1810bd2b9a83e4e0313889f3a941d56ece/

Threat name:

Win32.Backdoor.FormBook

Status:

Suspicious

First seen:

2025-05-27 04:26:56 UTC

File Type:

PE (.Net Exe)

Extracted files:

AV detection:

30 of 36 (83.33%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=d7ntor2ldud7ieiqifvdhap7dail2k42qpsoamjyrhz2sqovn3ha._file

Verdict:

malicious

Label(s):

unc_loader_037

formbook

Similar samples:

error

Formbook

Result

Malware family:

formbook

Score:

10/10

Tags:

family:formbook campaign:hi26 discovery execution rat spyware stealer trojan

Link:

https://tria.ge/reports/250610-lpghpawlw4/

Behaviour

Gathers network information

Scheduled Task/Job: Scheduled Task

Suspicious behavior: EnumeratesProcesses

Suspicious behavior: GetForegroundWindowSpam

Suspicious behavior: MapViewOfSection

Suspicious use of AdjustPrivilegeToken

Suspicious use of UnmapMainImage

Suspicious use of WriteProcessMemory

Enumerates physical storage devices

System Location Discovery: System Language Discovery

Suspicious use of SetThreadContext

Checks computer location settings

Uses the VBS compiler for execution

Command and Scripting Interpreter: PowerShell

Formbook payload

Formbook

Formbook family

Verdict:

Malicious

Tags:

n/a

YARA:

n/a

Link:

https://app.threat.zone/submission/788943af-f13e-44c1-a818-58930628ca93

Unpacked files

SH256 hash:

1fdb37474b1d07f41110416a3381ff1810bd2b9a83e4e0313889f3a941d56ece

MD5 hash:

b08b7557bda34f808d579c212fea35fd

SHA1 hash:

2de2268a171953f215933b4b26521f445c107979

Link:

https://www.unpac.me/results/0abcd4b1-661a-4abe-ba18-daea7a8e8d1f/

SH256 hash:

a4002a41088aba3178c8779a4388f40896543f0d5694562729e66f5e4dd899fd

MD5 hash:

6e0c8d849a1ae2b9cfa9ea70e7a0cd57

SHA1 hash:

24a5e2eea493aafd31f48b0b93e534aaf757db4f

Link:

https://www.unpac.me/results/0abcd4b1-661a-4abe-ba18-daea7a8e8d1f/

SH256 hash:

9e1f29c52d9ab57829e4a7d3b1da43106ef2848d6d10256ac62e7273a4b92789

MD5 hash:

421337801cc6fe1b7288ae02c208ae9c

SHA1 hash:

5bc30d0a6b37099991bb2f955e62bc17a576da4f

Detections:

SUSP_OBF_NET_ConfuserEx_Name_Pattern_Jan24

SUSP_OBF_NET_Reactor_Indicators_Jan24

Link:

https://www.unpac.me/results/0abcd4b1-661a-4abe-ba18-daea7a8e8d1f/

SH256 hash:

78ce5985f2ff20719b2924f128206c43d71af6eca0c88fdabeecbfef63057741

MD5 hash:

6440b1f79d6f8a2c00a8397e463becf2

SHA1 hash:

b11cecafb882f82c5fc59d60466baf0ad5dbac30

Detections:

win_formbook_w0

win_formbook_g0

win_formbook_auto

FormBook

Windows_Trojan_Formbook

Formbook

Link:

https://www.unpac.me/results/0abcd4b1-661a-4abe-ba18-daea7a8e8d1f/

Parent samples :
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Malware family:

XLoader

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/1fdb37474b1d/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:	cobalt_strike_tmp01925d3f Create hunting rule
Author:	The DFIR Report
Description:	files - file ~tmp01925d3f.exe
Reference:	https://thedfirreport.com

Rule name:	DebuggerCheck__API Create hunting rule
Reference:	https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara

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:	dgaagas Create hunting rule
Author:	Harshit
Description:	Uses certutil.exe to download a file named test.txt

Rule name:	golang_bin_JCorn_CSC846 Create hunting rule
Author:	Justin Cornwell
Description:	CSC-846 Golang detection ruleset

Rule name:	INDICATOR_KB_CERT_7c1118cbbadc95da3752c46e47a27438 Create hunting rule
Author:	ditekSHen
Description:	Detects executables signed with stolen, revoked or invalid certificates

Rule name:	MD5_Constants Create hunting rule
Author:	phoul (@phoul)
Description:	Look for MD5 constants

Rule name:	NET Create hunting rule
Author:	malware-lu

Rule name:	NETexecutableMicrosoft Create hunting rule
Author:	malware-lu

Rule name:	pe_detect_tls_callbacks Create hunting rule

Rule name:	PE_Digital_Certificate Create hunting rule
Author:	albertzsigovits

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:	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.

Cape

https://www.capesandbox.com/analysis/8572/

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

ID	Title	Severity
CHECK_AUTHENTICODE	Missing Authenticode	high
CHECK_DLL_CHARACTERISTICS	Missing dll Security Characteristics (GUARD_CF)	high

Comments

Login required

You need to login to in order to write a comment. Login with your abuse.ch account.

No comments found for this malware sample