MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 bcc41988bc560c5ddf3e58165cc25daec67e3a33529b2179868f1b4b7746db7a. 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 7 File information Comments

SHA256 hash:	bcc41988bc560c5ddf3e58165cc25daec67e3a33529b2179868f1b4b7746db7a
SHA3-384 hash:	0a743bea1d83a8d5ba7dfbfa7b95979d52a33c6793ad1f921170b3f4fa14094227a0e817d46bc82e6aa77b3c74836654
SHA1 hash:	c5f9c54d9bc639e7f84447e8d0b79323ef128b02
MD5 hash:	96e86e405d7562e778fa380a07ff8ff7
humanhash:	gee-seven-cardinal-sixteen
File name:	20241211TT.exe
Download:	download sample
Signature	Formbook Create hunting rule
File size:	760'832 bytes
First seen:	2024-12-19 07:18:55 UTC
Last seen:	Never
File type:	exe
MIME type:	application/x-dosexec
imphash	f34d5f2d4577ed6d9ceec516c1f5a744 (48'740 x AgentTesla, 19'602 x Formbook, 12'241 x SnakeKeylogger)
ssdeep	12288:uU8f2uE1zDMjwPCBchAASH2gDkPN0IJzI/4yoKAaKKiq08f2:uUu2uOUjw2chAAXgYmIJzI/4yoKAL60Z
Threatray	4'004 similar samples on MalwareBazaar
TLSH	T1A1F4BFD03F3AB702DE7CA934D536ECB851682E687010B9E76EDD2B577699202AD0CF50
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
File icon (PE):
dhash icon	84b2a8a0e2dab28c (7 x Formbook, 2 x AgentTesla, 1 x RemcosRAT)
Reporter	abuse_ch
Tags:	exe FormBook

Intelligence

File Origin

# of uploads :

# of downloads :

409

Origin country :

Vendor Threat Intelligence

Malware family:

formbook

ID:

File name:

20241211TT.exe

Verdict:

Malicious activity

Analysis date:

2024-12-19 07:23:47 UTC

Tags:

formbook xloader

Link:

https://app.any.run/tasks/0d78b2ee-fe4b-422f-b1a5-513ca1f1f025

Note:

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

Detection(s):

SecuriteInfo.com.Trojan.PackedNET.3167.27010.847.UNOFFICIAL

Verdict:

Malicious

Score:

90.9%

Link:

https://cyber-fortress.com/docs/result/index.php?id=6763c8fe8fb73f13afd18e42

Tags:

remcos shell virus micro

Result

Verdict:

Malware

Maliciousness:

Behaviour

Creating a window

Сreating synchronization primitives

Creating a process with a hidden window

Unauthorized injection to a recently created process

Restart of the analyzed sample

Creating a file

Launching a process

Launching cmd.exe command interpreter

Setting browser functions hooks

Adding an exclusion to Microsoft Defender

Unauthorized injection to a system process

Unauthorized injection to a browser process

Verdict:

Suspicious

Threat level:

5/10

Confidence:

100%

Tags:

obfuscated packed packed packer_detected vbnet

Link:

https://www.filescan.io/uploads/6763c8f621bbe1761ca6982e/reports/d7b6bde0-f867-42fd-b590-d4688055ad89/overview

Verdict:

Malicious

Labled as:

Trojan.Generic

Link:

https://www.hybrid-analysis.com/sample/bcc41988bc560c5ddf3e58165cc25daec67e3a33529b2179868f1b4b7746db7a

Result

Verdict:

MALICIOUS

Details

Windows PE Executable

Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.

Malware family:

Formbook

Verdict:

Malicious

Link:

https://analyze.intezer.com/analyses/54cbb306-195d-43fe-8e55-21091478823e

Result

Threat name:

FormBook

Detection:

malicious

Classification:

troj.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1578067

Signature

.NET source code contains potential unpacker

Adds a directory exclusion to Windows Defender

AI detected suspicious sample

Antivirus / Scanner detection for submitted sample

C2 URLs / IPs found in malware configuration

Found direct / indirect Syscall (likely to bypass EDR)

Found malware configuration

Injects a PE file into a foreign processes

Loading BitLocker PowerShell Module

Machine Learning detection for sample

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 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

Switches to a custom stack to bypass stack traces

Tries to detect virtualization through RDTSC time measurements

Tries to resolve many domain names, but no domain seems valid

Yara detected AntiVM3

Yara detected FormBook

Behaviour

Behavior Graph:

Download SVG

Score:

100%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/bcc41988bc560c5ddf3e58165cc25daec67e3a33529b2179868f1b4b7746db7a

Detection:

formbook

Link:

https://mwdb.cert.pl/sample/bcc41988bc560c5ddf3e58165cc25daec67e3a33529b2179868f1b4b7746db7a/

Threat name:

ByteCode-MSIL.Backdoor.FormBook

Status:

Malicious

First seen:

2024-12-18 12:56:25 UTC

File Type:

PE (.Net Exe)

Extracted files:

AV detection:

31 of 38 (81.58%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=xtcbtcf4kygf3xz6lalfzqs5v3dh4ortkknsc6mgr4nuw52g3n5a._file

Verdict:

malicious

Label(s):

unknown_loader_037

formbook

Result

Malware family:

formbook

Score:

10/10

Tags:

family:formbook campaign:k49s discovery execution rat spyware stealer trojan

Link:

https://tria.ge/reports/241219-h5jq7svjdv/

Behaviour

Suspicious behavior: EnumeratesProcesses

Suspicious behavior: MapViewOfSection

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Enumerates physical storage devices

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:

Suspicious

Tags:

n/a

YARA:

n/a

Link:

https://app.threat.zone/submission/7ab9d4df-02e6-4fe6-83af-03ffc5c3c70a

Unpacked files

SH256 hash:

83444a43ba472442e2b0fa4d01a2cb7a556ec37f4cd1ba63d17f0ed2809a31a0

MD5 hash:

3cc82489a99c6d951eab4626dc9dd5ba

SHA1 hash:

bb13c4f857a49e23ce51878b6f00778452a2e98e

Detections:

Windows_Trojan_Formbook

Formbook

Link:

https://www.unpac.me/results/bacd31d6-06f2-4451-81f6-ccf9d93fb065/

Parent samples :

bcc41988bc560c5ddf3e58165cc25daec67e3a33529b2179868f1b4b7746db7a
36ac663aee997b4b8da3bd498abcbdb91ca180f7afe402ce8ab166099c098cbf
792bdecda049100bcddb388c74b9fa5aa21d30a167786f1e5a99091a6e77c430
f30ccd8d6bd65a6c172e6233220523d984516e145b06d986bc6c0736e53dfde8
ba331599bb06083aa97ac39010b2d6b5c1078ed519b5ed4dcab97276c84ecedb
f0b540b1edbd94b9a7b330505529477cbbf6742ad78008979661d30b8f54731a

SH256 hash:

366cfb2015078d80637bad5e41ba879903fafc17fe6d24d74210fbbfeaa07bd6

MD5 hash:

6c6509adcd386e5aa612f7a9c3d8a04b

SHA1 hash:

d36a9e2f20a88d035da9f976ba551358cbb3f913

Link:

https://www.unpac.me/results/bacd31d6-06f2-4451-81f6-ccf9d93fb065/

SH256 hash:

14be53175fbe270677fa1b55b4229b5e8625bf301ee1a76b990079db5e171b1a

MD5 hash:

e2c2a8e4c9d679c0a5403194a724243f

SHA1 hash:

5ff668ae7868d178a2c8fc255ac6ab6e22c75538

Detections:

SUSP_OBF_NET_ConfuserEx_Name_Pattern_Jan24

SUSP_OBF_NET_Reactor_Indicators_Jan24

Link:

https://www.unpac.me/results/bacd31d6-06f2-4451-81f6-ccf9d93fb065/

SH256 hash:

bcc41988bc560c5ddf3e58165cc25daec67e3a33529b2179868f1b4b7746db7a

MD5 hash:

96e86e405d7562e778fa380a07ff8ff7

SHA1 hash:

c5f9c54d9bc639e7f84447e8d0b79323ef128b02

Link:

https://www.unpac.me/results/bacd31d6-06f2-4451-81f6-ccf9d93fb065/

Malware family:

FormBook

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/bcc41988bc56/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:	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:	RansomPyShield_Antiransomware Create hunting rule
Author:	XiAnzheng
Description:	Check for Suspicious String and Import combination that Ransomware mostly abuse(can create FP)

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.

No further information available

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 (HIGH_ENTROPY_VA)	high

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