MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c54ce80cb03b598334ac7e4dc5203cc33fe92f282245c6780d852ddebf77a3c5. 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: 14

Intelligence 14 IOCs YARA 18 File information Comments

SHA256 hash:	c54ce80cb03b598334ac7e4dc5203cc33fe92f282245c6780d852ddebf77a3c5
SHA3-384 hash:	4c37b99bbd97ea950e0635fa7735dd4bf7a73373f1f37cf270db8160f43d6ff8fc82c8cd2a6a69e733418ba475b9a7d4
SHA1 hash:	3763b0133254d1c4bac948d9e9b1384e2df160a8
MD5 hash:	fda056e095b690a81b3fee8302c4d689
humanhash:	eighteen-pluto-arizona-stream
File name:	HjwYtpeUI9fqZuY.exe
Download:	download sample
Signature	Formbook Create hunting rule
File size:	662'024 bytes
First seen:	2024-03-04 13:41:03 UTC
Last seen:	2024-03-04 15:24:10 UTC
File type:	exe
MIME type:	application/x-dosexec
imphash	f34d5f2d4577ed6d9ceec516c1f5a744 (48'657 x AgentTesla, 19'468 x Formbook, 12'208 x SnakeKeylogger)
ssdeep	12288:HUqL9bW9ezNHNMs7pMWbDqwdyOz4QU8RnGFoHqceQmZdZ0wkR:HVL9iyNHNf7GWbnd/zt2QmZ83
Threatray	910 similar samples on MalwareBazaar
TLSH	T1B3E4136633ECD927C9FA2AF524B9091403F1B55A7879C7CE1C8460CE5AD2FDA96E0703
TrID	49.0% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13) 20.9% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13) 8.7% (.SCR) Windows screen saver (13097/50/3) 7.0% (.EXE) Win64 Executable (generic) (10523/12/4) 4.4% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
File icon (PE):
dhash icon	64e4c1ac66e6f4b8 (3 x AgentTesla, 1 x RedLineStealer, 1 x Formbook)
Reporter	adrian__luca
Tags:	exe FormBook

Intelligence

File Origin

# of uploads :

# of downloads :

300

Origin country :

Vendor Threat Intelligence

Detection(s):

Porcupine.Malware.58887.UNOFFICIAL

Result

Verdict:

Malware

Maliciousness:

Behaviour

Creating a window

Unauthorized injection to a recently created process

Restart of the analyzed sample

Creating a file

Launching cmd.exe command interpreter

Сreating synchronization primitives

Creating a file in the %AppData% subdirectories

Reading critical registry keys

Creating a file in the %temp% directory

Searching for synchronization primitives

Launching a process

Unauthorized injection to a system process

Verdict:

Malicious

Threat level:

10/10

Confidence:

100%

Tags:

overlay packed

Link:

https://www.filescan.io/uploads/65e5cfae7ce606140b1bde80/reports/080c67d9-3961-4c36-97a5-bbd052171010/overview

Verdict:

Malicious

Labled as:

Trojan.Generic

Link:

https://www.hybrid-analysis.com/sample/c54ce80cb03b598334ac7e4dc5203cc33fe92f282245c6780d852ddebf77a3c5

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/631d9d9b-1c3d-4801-bda8-8d752675b99b

Result

Threat name:

FormBook, PureLog Stealer

Detection:

malicious

Classification:

troj.spyw.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1402680

Signature

.NET source code contains method to dynamically call methods (often used by packers)

.NET source code contains potential unpacker

.NET source code contains very large array initializations

Antivirus detection for URL or domain

C2 URLs / IPs found in malware configuration

Detected FormBook malware

Found malware configuration

Injects a PE file into a foreign processes

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)

Modifies the prolog of user mode functions (user mode inline hooks)

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: Steal Google chrome login data

Snort IDS alert for network traffic

System process connects to network (likely due to code injection or exploit)

Tries to detect virtualization through RDTSC time measurements

Tries to harvest and steal browser information (history, passwords, etc)

Tries to steal Mail credentials (via file / registry access)

Writes to foreign memory regions

Yara detected AntiVM3

Yara detected FormBook

Yara detected PureLog Stealer

Behaviour

Behavior Graph:

Download SVG

Score:

100%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/c54ce80cb03b598334ac7e4dc5203cc33fe92f282245c6780d852ddebf77a3c5

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/c54ce80cb03b598334ac7e4dc5203cc33fe92f282245c6780d852ddebf77a3c5/

Threat name:

ByteCode-MSIL.Trojan.AgentTesla

Status:

Malicious

First seen:

2024-02-28 07:19:17 UTC

File Type:

PE (.Net Exe)

Extracted files:

AV detection:

19 of 24 (79.17%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=yvgoqdfqhnmygnfmpzg4kib4ym76slziejc4m6anquw55p3xupcq._file

Verdict:

malicious

Label(s):

formbook

Formbook

2aae1c0d24cf1e75f9e392bc8df159de3cc10482ec6a692e45bfab89deade435

Formbook

3f71cd633e4008724884843131ed3d03c8d6613882f81a8afc615ad30f841dfe

Formbook

4a315242b8f5619463853e2d7edea38ccc32a0ac71bf996a6c4d6b27388e6809

Formbook

52d8942e61bd4086fcff78395b40844a7cf525ce5e1201544451e8cd2113e8d8

Formbook

7aa331eebe368ea49b82cdd5fd007e0326c803d8236349364a1868075d068c4c

Formbook

d1544604348008fe3cc10c72a6e1903c47fa78d2fa53c1a04aebcb2c8e187287

Formbook

dcd550058c9d0ddf7734ae149ca1f6d333e5873ab97af5453570d7d5e3deac55

Formbook

+ 900 additional samples on MalwareBazaar

Result

Malware family:

formbook

Score:

10/10

Tags:

family:formbook campaign:cz30 rat spyware stealer trojan

Link:

https://tria.ge/reports/240304-qzpn9scf87/

Behaviour

Modifies Internet Explorer settings

Suspicious behavior: EnumeratesProcesses

Suspicious behavior: MapViewOfSection

Suspicious use of AdjustPrivilegeToken

Suspicious use of FindShellTrayWindow

Suspicious use of UnmapMainImage

Suspicious use of WriteProcessMemory

Program crash

Suspicious use of SetThreadContext

Reads user/profile data of web browsers

Formbook payload

Formbook

Unpacked files

SH256 hash:

fea6d260f190f9c12fe3e5a7b44fa44eb962d64c827cac3c43ccbff0d6f7ef29

MD5 hash:

12b26db7b06bf7bf6dc2b943eccac096

SHA1 hash:

49a957e558b552805e69cfd3d1bff9c986ef7348

Detections:

FormBook

win_formbook_w0

win_formbook_auto

win_formbook_g0

Formbook

Link:

https://www.unpac.me/results/c36eca60-fdb1-4b63-b2b8-03f5af1546d9/

Parent samples :
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SH256 hash:

31b894315abd62e4d12259960d3f73fe42db036c46e3d1bd0d22ae447ebd93c5

MD5 hash:

557226f129c58448b5bc395e4791b6e3

SHA1 hash:

c195e6f28f029bd40e88322782d0096569e4a36d

Link:

https://www.unpac.me/results/c36eca60-fdb1-4b63-b2b8-03f5af1546d9/

SH256 hash:

d5e54ac29044ea48c678a522e6d642294c7dfb119d9bc256f007348f08ea6eff

MD5 hash:

495e6660bcbbe2d96a0119d02a22b416

SHA1 hash:

7dccb189d7f1533a11b95da8908fb1a45cfc9dab

Link:

https://www.unpac.me/results/c36eca60-fdb1-4b63-b2b8-03f5af1546d9/

SH256 hash:

0190398cd1ee7458b2ad4de5bae10989d4f63420c848cc3c80a3c69296dc383f

MD5 hash:

970503effbe2981f2044430e63d4fb4e

SHA1 hash:

5a4c26491580bd7f79c8a4805ef36e9ecf3f1556

Link:

https://www.unpac.me/results/c36eca60-fdb1-4b63-b2b8-03f5af1546d9/

SH256 hash:

c54ce80cb03b598334ac7e4dc5203cc33fe92f282245c6780d852ddebf77a3c5

MD5 hash:

fda056e095b690a81b3fee8302c4d689

SHA1 hash:

3763b0133254d1c4bac948d9e9b1384e2df160a8

Detections:

INDICATOR_KB_CERT_7c1118cbbadc95da3752c46e47a27438

Link:

https://www.unpac.me/results/c36eca60-fdb1-4b63-b2b8-03f5af1546d9/

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/c54ce80cb03b598334ac7e4dc5203cc33fe92f282245c6780d852ddebf77a3c5

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

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

Rule name:	maldoc_getEIP_method_1 Create hunting rule
Author:	Didier Stevens (https://DidierStevens.com)

Rule name:	meth_get_eip Create hunting rule
Author:	Willi Ballenthin

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_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:	PE_Potentially_Signed_Digital_Certificate Create hunting rule
Author:	albertzsigovits

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:	Skystars_Malware_Imphash Create hunting rule
Author:	Skystars LightDefender
Description:	imphash

Rule name:	Windows_Trojan_Formbook Create hunting rule
Author:	@malgamy12

Rule name:	Windows_Trojan_Formbook_1112e116 Create hunting rule
Author:	Elastic Security
Reference:	https://www.elastic.co/security-labs/formbook-adopts-cab-less-approach

Rule name:	win_formbook_auto Create hunting rule
Author:	Felix Bilstein - yara-signator at cocacoding dot com
Description:	Detects win.formbook.

Rule name:	win_formbook_w0 Create hunting rule
Author:	@malgamy12

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Malspam

Formbook

exe c54ce80cb03b598334ac7e4dc5203cc33fe92f282245c6780d852ddebf77a3c5

(this sample)

Delivery method

Distributed via e-mail attachment

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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