MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 77391aadbf70e59c1b92170606445049b8664a2335913d3d58a647f73810bcd2. 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: 13

Intelligence 13 IOCs YARA 20 File information Comments

SHA256 hash:	77391aadbf70e59c1b92170606445049b8664a2335913d3d58a647f73810bcd2
SHA3-384 hash:	5d58d6714ac8a76ac54a1dee19d908436c7214216515984687170aafdc9aed49a2f9a7db9b90acb80898cd205c1bddfc
SHA1 hash:	7c536c225b2e37e0798e05dab05a3685e5bac91d
MD5 hash:	af95b3cf06754e95a0c21b10321488c9
humanhash:	freddie-seventeen-beer-arizona
File name:	Repeat Order 020124.exe
Download:	download sample
Signature	Formbook Create hunting rule
File size:	89'488 bytes
First seen:	2024-02-01 16:50:36 UTC
Last seen:	Never
File type:	exe
MIME type:	application/x-dosexec
imphash	f34d5f2d4577ed6d9ceec516c1f5a744 (48'662 x AgentTesla, 19'475 x Formbook, 12'208 x SnakeKeylogger)
ssdeep	1536:Z8y57vOjG3aktoru5nMGXuwoPFG6NJbhRL0hzPe5QtlPpu0CvmVoBJJeiyl:Z8y5bOj2akmOntuw8G6NJbhoubvZJoj
Threatray	8 similar samples on MalwareBazaar
TLSH	T161936C25678CD51ADA4F06FCE822A124237093B64143E78C5FACC9AC311FFD99A05BE7
TrID	40.4% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13) 31.8% (.CPL) Windows Control Panel Item (generic) (57583/11/19) 7.2% (.SCR) Windows screen saver (13097/50/3) 5.8% (.EXE) Win64 Executable (generic) (10523/12/4) 3.6% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
Reporter	threatcat_ch
Tags:	exe FormBook signed

Code Signing Certificate

Organisation:	Mozilla Cooperation 2023
Issuer:	Mozilla Cooperation 2023
Algorithm:	sha256WithRSAEncryption
Valid from:	2024-02-01T00:22:02Z
Valid to:	2025-02-01T00:22:02Z
Serial number:	ec34df9ae57796e046f0111e095ac4af
Thumbprint Algorithm:	SHA256
Thumbprint:	778e66801945b62b8f059a48e5d612d97d13931758e9409e0a2d86375651cf6d
Source:	This information was brought to you by ReversingLabs A1000 Malware Analysis Platform

Intelligence

File Origin

# of uploads :

# of downloads :

314

Origin country :

Vendor Threat Intelligence

Malware family:

formbook

ID:

File name:

77391aadbf70e59c1b92170606445049b8664a2335913d3d58a647f73810bcd2.zip

Verdict:

Malicious activity

Analysis date:

2024-02-01 18:20:50 UTC

Tags:

formbook xloader

Link:

https://app.any.run/tasks/c0dbf917-5ba3-4f93-ab03-e4b6778c8ba8

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/474070/

Detection(s):

SecuriteInfo.com.Win32.TrojanX-gen.14758.10871.UNOFFICIAL

Verdict:

Malicious

Threat level:

10/10

Confidence:

100%

Tags:

masquerade overlay packed

Link:

https://www.filescan.io/uploads/65bbcc0019fc3809141abf5c/reports/baf4e978-8faf-4494-a753-be9e35b9f389/overview

Verdict:

Malicious

Labled as:

Win/malicious_confidence_100%

Link:

https://www.hybrid-analysis.com/sample/77391aadbf70e59c1b92170606445049b8664a2335913d3d58a647f73810bcd2

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/e5fb6902-ebc7-4dd0-bf3b-02c599a37569

Result

Threat name:

FormBook

Detection:

malicious

Classification:

troj.expl.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1385051

Signature

.NET source code contains potential unpacker

.NET source code contains process injector

.NET source code references suspicious native API functions

Allocates memory in foreign processes

Antivirus detection for URL or domain

C2 URLs / IPs found in malware configuration

Found malware configuration

Initial sample is a PE file and has a suspicious name

Injects a PE file into a foreign processes

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

Queues an APC in another process (thread injection)

Sample uses process hollowing technique

Sigma detected: CMSTP Execution Process Creation

Sigma detected: Suspicious Process Parents

Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)

Tries to detect virtualization through RDTSC time measurements

Writes to foreign memory regions

Yara detected AntiVM3

Yara detected FormBook

Yara detected Generic Downloader

Yara detected UAC Bypass using CMSTP

Behaviour

Behavior Graph:

Download SVG

Score:

31%

Verdict:

Susipicious

File Type:

Link:

https://malprob.io/report/77391aadbf70e59c1b92170606445049b8664a2335913d3d58a647f73810bcd2

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/77391aadbf70e59c1b92170606445049b8664a2335913d3d58a647f73810bcd2/

Threat name:

Win32.Trojan.Znyonm

Status:

Malicious

First seen:

2024-02-01 00:46:28 UTC

File Type:

PE (.Net Exe)

Extracted files:

AV detection:

17 of 24 (70.83%)

Threat level:

5/5

Detection(s):

Malicious file

Link:

https://check.spamhaus.org/check/?searchterm=o44rvln7odszyg4sc4damrcqjg4gmsrdgwit2pkyuzd7ooaqxtja._file

Verdict:

unknown

Formbook

3d5a231fedd35ec2898fd4826c47e40839661f0814d9a0072d8bcb9e0391979d

Formbook

8850c10c46383bafebe6053d7cbaca3625b5ab73c9b267edd574c90aaaa7bed6

Formbook

908c852e62f3c069dfbfd4ee9459bab100e23f84edba24a8d2b5fc863eb649f8

Formbook

Result

Malware family:

formbook

Score:

10/10

Tags:

family:formbook campaign:ai02 rat spyware stealer trojan

Link:

https://tria.ge/reports/240201-vctrxscdgj/

Behaviour

Suspicious behavior: EnumeratesProcesses

Suspicious behavior: MapViewOfSection

Suspicious use of AdjustPrivilegeToken

Suspicious use of FindShellTrayWindow

Suspicious use of SendNotifyMessage

Suspicious use of WriteProcessMemory

Suspicious use of SetThreadContext

Formbook payload

Formbook

Unpacked files

SH256 hash:

77391aadbf70e59c1b92170606445049b8664a2335913d3d58a647f73810bcd2

MD5 hash:

af95b3cf06754e95a0c21b10321488c9

SHA1 hash:

7c536c225b2e37e0798e05dab05a3685e5bac91d

Link:

https://www.unpac.me/results/deff4ae3-0bd7-4988-a579-a14248142c8d/

Malware family:

FormBook

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/77391aadbf70/report/overview.html

Please note that we are no longer able to provide a coverage score for Virus Total.

Threat name:

Legit

Score:

0.00

Link:

https://yomi.yoroi.company/submissions/77391aadbf70e59c1b92170606445049b8664a2335913d3d58a647f73810bcd2

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:	DebuggerException__SetConsoleCtrl 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:	maldoc_find_kernel32_base_method_1 Create hunting rule
Author:	Didier Stevens (https://DidierStevens.com)

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

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

Rule name:	meth_get_eip Create hunting rule
Author:	Willi Ballenthin

Rule name:	NET 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:	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

File information

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

Malspam

Formbook

exe 77391aadbf70e59c1b92170606445049b8664a2335913d3d58a647f73810bcd2

(this sample)

Delivery method

Distributed via e-mail attachment

Cape

https://www.capesandbox.com/analysis/474070/

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