MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 091fe3a36df94f559c878564de16e72c8ad5368ff0f1d89fec4b493725e96bbe. 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: 18

Intelligence 18 IOCs YARA 18 File information Comments

SHA256 hash:	091fe3a36df94f559c878564de16e72c8ad5368ff0f1d89fec4b493725e96bbe
SHA3-384 hash:	c2689a04245f99503df21141aae864a6cfed684e3d1a871b34cc22309e1e7b8b91df030b871d84d3cedaa619795c11b3
SHA1 hash:	c6f168840bc5bdf78aa8e233f82be23de564adfa
MD5 hash:	cf628881be331f30699eb1dd5aa4dfc4
humanhash:	table-wolfram-nuts-saturn
File name:	Order #0827 pdf.exe
Download:	download sample
Signature	Formbook Create hunting rule
File size:	322'022 bytes
First seen:	2023-08-28 14:09:21 UTC
Last seen:	2023-08-30 17:18:36 UTC
File type:	exe
MIME type:	application/x-dosexec
imphash	61259b55b8912888e90f516ca08dc514 (1'059 x Formbook, 741 x AgentTesla, 427 x GuLoader)
ssdeep	6144:PYa6vuZAuR4LMg+goct6Ku7xjFbbOp60nlnoARILQEODn:PYlFuRol02/u9dbOpHnmAR9Eu
Threatray	1'859 similar samples on MalwareBazaar
TLSH	T1FA64121272E1C4D7C5A351323F751BB7ABFBA64718E58B4B238069687A37112E84B393
TrID	47.3% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13) 15.9% (.EXE) Win64 Executable (generic) (10523/12/4) 9.9% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2) 7.6% (.EXE) Win16 NE executable (generic) (5038/12/1) 6.8% (.EXE) Win32 Executable (generic) (4505/5/1)
File icon (PE):
dhash icon	b2a89c96a2cada72 (2'283 x Formbook, 981 x Loki, 803 x AgentTesla)
Reporter	malwarelabnet
Tags:	exe FormBook

Intelligence

File Origin

# of uploads :

# of downloads :

281

Origin country :

Vendor Threat Intelligence

Malware family:

formbook

ID:

File name:

Order #0827 pdf.exe

Verdict:

Malicious activity

Analysis date:

2023-08-28 14:12:29 UTC

Tags:

formbook xloader stealer spyware

Link:

https://app.any.run/tasks/82de5458-eda7-47c0-b777-cad5ec22d0f2

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/444941/

Detection(s):

Sanesecurity.Rogue.0hr.20230828-0538.UNOFFICIAL

Result

Verdict:

Malware

Maliciousness:

Behaviour

Searching for the window

Creating a file in the %temp% directory

Creating a window

Creating a process from a recently created file

Launching the process to change network settings

Сreating synchronization primitives

Launching cmd.exe command interpreter

Sending a custom TCP request

Setting browser functions hooks

Unauthorized injection to a recently created process

Unauthorized injection to a recently created process by context flags manipulation

Unauthorized injection to a system process

Unauthorized injection to a browser process

Gathering data

Verdict:

Malicious

Threat level:

10/10

Confidence:

100%

Tags:

control lolbin masquerade overlay packed shell32

Link:

https://www.filescan.io/uploads/64ecaabc2a47256e3a2e6de2/reports/6429659e-e039-4a49-8776-e2997cb69024/overview

Verdict:

Malicious

Labled as:

Win/malicious_confidence_100%

Link:

https://www.hybrid-analysis.com/sample/091fe3a36df94f559c878564de16e72c8ad5368ff0f1d89fec4b493725e96bbe

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/98a40b74-7d4b-4078-a3c6-4ffac4bf2fb1

Result

Threat name:

FormBook, NSISDropper

Detection:

malicious

Classification:

troj.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1298765

Signature

Antivirus detection for dropped file

Antivirus detection for URL or domain

Detected unpacking (changes PE section rights)

Initial sample is a PE file and has a suspicious name

Machine Learning detection for dropped file

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 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

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

Yara detected FormBook

Yara detected NSISDropper

Behaviour

Behavior Graph:

Download SVG

Detection:

formbook

Link:

https://mwdb.cert.pl/sample/091fe3a36df94f559c878564de16e72c8ad5368ff0f1d89fec4b493725e96bbe/

Threat name:

Win32.Trojan.Generic

Status:

Malicious

First seen:

2023-08-27 23:54:15 UTC

File Type:

PE (Exe)

Extracted files:

AV detection:

24 of 38 (63.16%)

Threat level:

2/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=bep6hi3n7fhvlhehqvsn4fxhfsfnknup6dy5rh7mjnetojpjno7a._file

Verdict:

malicious

Label(s):

formbook

Formbook

3075ce1d8754fd33aba3041411c6f1465abdb5c49495b18511c656589db79ba9

Formbook

6b3304337025f31f706e215c93b83d67ce344240c4130d51a784b06ebc5afa6e

Formbook

7a123e291c6c3bca48da92da78abd1157469dd5885f7af234e9114bcc5c8f061

Formbook

a318197c6b7d13969ec28187327e1005ac7d39f969ef27b81f7967870e896378

Formbook

b799dc2f99d7cf59b9379f6ac7b32fe0852d2eab2386d20799c3085d38a576a5

Formbook

cbcfd7f5e01a53f530bebf71dc07ddac59b03d2ee0f5825f541e3bf668d6abc5

Formbook

ce4adf5f77ad3bf554ee6727abfe3c82e49ac5097e4e8d50ba2faba0d05b9c1d

Formbook

+ 1'849 additional samples on MalwareBazaar

Result

Malware family:

formbook

Score:

10/10

Tags:

family:formbook campaign:sn26 rat spyware stealer trojan

Link:

https://tria.ge/reports/230828-rgpf8aee7t/

Behaviour

Gathers network information

Suspicious behavior: EnumeratesProcesses

Suspicious behavior: GetForegroundWindowSpam

Suspicious behavior: MapViewOfSection

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Enumerates physical storage devices

Suspicious use of SetThreadContext

Executes dropped EXE

Loads dropped DLL

Formbook payload

Formbook

Unpacked files

SH256 hash:

57d06b57605109335f41e7529a275a14155c39bd74c54049dfcdfa8a5756c09a

MD5 hash:

612b19e1ed04b4a8f442939324963a63

SHA1 hash:

5f12391109b022d1017312892ff95a7b751afa37

Detections:

FormBook

win_formbook_w0

win_formbook_auto

win_formbook_g0

Link:

https://www.unpac.me/results/c89089cb-b47e-4e50-b52c-7b5d4fdafff2/

Parent samples :

cc1e18df25ea2f4e3a97b78ceb434ba61318eae9ee868d62bb1b3b8e9dbf2c7c
61894dd6d947ab1237c08e4f020e6462fdc7a96903c7cf27523d4e21304c1612
44b4eef8a260669a21c64f95af4c5ad884b77fc118be9ade37dad2b908a37bee
c4079f3f904aaaeda007ba7ce93f24d8a47eb749be233eaf87766e12fcada032
1a40316f6c5b2edf199b2ea9d5b00cc4ae5547a29b6aa08caadd5ed53a007521
276026d460a163a82f31f1d1b1283b13f37170ab543357585952c311606d6a7f
3075ce1d8754fd33aba3041411c6f1465abdb5c49495b18511c656589db79ba9
7a123e291c6c3bca48da92da78abd1157469dd5885f7af234e9114bcc5c8f061
ce4adf5f77ad3bf554ee6727abfe3c82e49ac5097e4e8d50ba2faba0d05b9c1d
a318197c6b7d13969ec28187327e1005ac7d39f969ef27b81f7967870e896378
5e356ba0663601a704ff745bf4e38b9a8ee7ececcd5443da641d46c30a04de07
5f4316e6d654f612b1aa557b15eae6502979697bcd4cdc101b49c2297a6dca14
91407535cc5852ecae7889b9f034920694c733c9e47f89d08a470e32b9d31e13
091fe3a36df94f559c878564de16e72c8ad5368ff0f1d89fec4b493725e96bbe
21696a3d60cb627bb86b4e08f32f1ae08e348ff3b4e99ad15c85febb1caca754
99160f7ca07e18bc3a131520825ab4ce8d2f4c57b63bffc89d8e18d5a7fa25ce
ae5f1fa9855fd6e4511a674f0a0465df7960a757409a0d176f50b10fd14925ad
02971b038e3224fb89a5aa824cd4388ab3108e86571312d127e32b6a59b1b3ec
ce56ba6e7d6693cf8b2110b6ce1789f9a38669af8e17c30ff83e9fec9372c372
bc1c8cb700d5be15c306441325d0390344f846c226d720647d9f8d8e37f458db
3776d991080dd8cdf41d7b64315d1bccf2c09ed001058b9a28042d760f888163

SH256 hash:

67851e4fc08710df92cf6ca5dbf09eaa4e247648e947bad24db854ca789ebf39

MD5 hash:

76c381c92a2c3aab5d89ce7db27b1d44

SHA1 hash:

5ab7117071fa75aecb93d91d40b988348d772757

Link:

https://www.unpac.me/results/c89089cb-b47e-4e50-b52c-7b5d4fdafff2/

SH256 hash:

091fe3a36df94f559c878564de16e72c8ad5368ff0f1d89fec4b493725e96bbe

MD5 hash:

cf628881be331f30699eb1dd5aa4dfc4

SHA1 hash:

c6f168840bc5bdf78aa8e233f82be23de564adfa

Link:

https://www.unpac.me/results/c89089cb-b47e-4e50-b52c-7b5d4fdafff2/

Malware family:

FormBook

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/091fe3a36df9/report/overview.html

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/091fe3a36df94f559c878564de16e72c8ad5368ff0f1d89fec4b493725e96bbe

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:	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:	meth_stackstrings Create hunting rule
Author:	Willi Ballenthin

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:	Windows_Trojan_Formbook Create hunting rule
Author:	@malgamy12

Rule name:	Windows_Trojan_Formbook_1112e116 Create hunting rule
Author:	Elastic Security

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

zip a351bd52fd5c8548e5b438f11c524b47d3779fdd39d082f33777370e37b0b584

Formbook

exe 091fe3a36df94f559c878564de16e72c8ad5368ff0f1d89fec4b493725e96bbe

(this sample)

Cape

https://www.capesandbox.com/analysis/444941/

Dropped by

SHA256 a351bd52fd5c8548e5b438f11c524b47d3779fdd39d082f33777370e37b0b584

Dropped by

MD5 1b8896f7cc22e5f3c6f8efba0ab18511

Comments

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