MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 5b1fa880d6f314e204011dae8376ae6766d350277c5b80859efe775b5fd7091b. 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: 11

Intelligence 11 IOCs YARA 22 File information Comments

SHA256 hash:	5b1fa880d6f314e204011dae8376ae6766d350277c5b80859efe775b5fd7091b
SHA3-384 hash:	d4f4c9039da55a8281c54af6393ecd238447965da6fe68ddedbf97d2001f9dd36855c7fd2f392b8d6bafc82a91bd69ae
SHA1 hash:	0e601846eeb15dea9ab28e27f75e6aff45d4f241
MD5 hash:	4f289aa022ef4ee7b22a3163725940a7
humanhash:	salami-mike-timing-summer
File name:	TEKLİF TALEP VE FİYAT TEKLİFİ_xlsx.exe
Download:	download sample
Signature	Formbook Create hunting rule
File size:	699'904 bytes
First seen:	2023-11-08 08:11:12 UTC
Last seen:	2023-11-08 14:49:01 UTC
File type:	exe
MIME type:	application/x-dosexec
imphash	f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep	12288:eZuumVcrmovF98HURfSTC/Ud69ZhJnNsuuJ/k0wcBVSq5SLp45PWICMZhNmMhlm:rum+rm49Gii6rNsu90w0SqNN1CMjNl
TLSH	T18DE4025126BC4BE3F638A3F33360B6101779FA5B742AF24A9CD924DD8632F4089A5717
TrID	63.0% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13) 11.2% (.SCR) Windows screen saver (13097/50/3) 9.0% (.EXE) Win64 Executable (generic) (10523/12/4) 5.6% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2) 3.8% (.EXE) Win32 Executable (generic) (4505/5/1)
File icon (PE):
dhash icon	c018f9ccccf430c4 (16 x AgentTesla, 4 x Formbook)
Reporter	abuse_ch
Tags:	exe FormBook geo TUR

Intelligence

File Origin

# of uploads :

# of downloads :

303

Origin country :

Vendor Threat Intelligence

Detection(s):

SecuriteInfo.com.Win32.PWSX-gen.18983.1290.UNOFFICIAL

Result

Verdict:

Malware

Maliciousness:

Behaviour

Searching for the window

Creating a window

Sending a custom TCP request

Сreating synchronization primitives

Searching for synchronization primitives

Launching the default Windows debugger (dwwin.exe)

Verdict:

Malicious

Labled as:

Win/malicious_confidence_100%

Link:

https://www.hybrid-analysis.com/sample/5b1fa880d6f314e204011dae8376ae6766d350277c5b80859efe775b5fd7091b

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/438df16d-a104-4f80-bc89-0d0e83869af1

Result

Threat name:

FormBook

Detection:

malicious

Classification:

troj.evad

Score:

80 / 100

Link:

https://www.joesandbox.com/analysis/1338858

Signature

.NET source code contains potential unpacker

Injects a PE file into a foreign processes

Malicious sample detected (through community Yara rule)

Multi AV Scanner detection for submitted file

Yara detected AntiVM3

Yara detected FormBook

Behaviour

Behavior Graph:

Download SVG

Score:

100%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/5b1fa880d6f314e204011dae8376ae6766d350277c5b80859efe775b5fd7091b

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/5b1fa880d6f314e204011dae8376ae6766d350277c5b80859efe775b5fd7091b/

Threat name:

ByteCode-MSIL.Trojan.AgentTesla

Status:

Malicious

First seen:

2023-11-08 07:47:20 UTC

File Type:

PE (.Net Exe)

Extracted files:

AV detection:

19 of 38 (50.00%)

Threat level:

5/5

Detection(s):

Malicious file

Link:

https://check.spamhaus.org/check/?searchterm=lmp2ragw6mkoebabdwxig5vom5tngubhprnybbm67z3vwx6xbenq._file

Verdict:

malicious

Label(s):

formbook

Result

Malware family:

n/a

Score:

3/10

Tags:

n/a

Link:

https://tria.ge/reports/231108-j3valagb4w/

Behaviour

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Program crash

Unpacked files

SH256 hash:

905f9cac0c46040cb225556a83a536e66e8f08bf39d8ad4787cfb91a45005af6

MD5 hash:

d2f80bad148f04c9fb61f800b0b69fe9

SHA1 hash:

46ffbc18790030159f22d344b942d0e6f821a831

Link:

https://www.unpac.me/results/5da477e2-9978-4e65-ae9b-a5dcf6691a48/

SH256 hash:

4affe8eccb0183654f4aac08808d02460316b8283441609bb78bc14babdd6f7a

MD5 hash:

90e303cc3cf75bfed919c4b8c384f3a9

SHA1 hash:

54375c92aedacc97722bf91f1c762d3a08a09163

Link:

https://www.unpac.me/results/5da477e2-9978-4e65-ae9b-a5dcf6691a48/

SH256 hash:

d01f3dea3851602ba5a0586c60430d286adf6fcc7e17aab080601a66630606e5

MD5 hash:

579197d4f760148a9482d1ebde113259

SHA1 hash:

cf6924eb360c7e5a117323bebcb6ee02d2aec86d

Link:

https://www.unpac.me/results/5da477e2-9978-4e65-ae9b-a5dcf6691a48/

SH256 hash:

14433ff9d2ddece0b2f4b24d50f1b9a5bbd3b7c6fdf4a2eba3c483f582e192ff

MD5 hash:

92b804a835ed0cb474fc18bcaf7e6d14

SHA1 hash:

9b51dff5fe24f1da5a3b55e337563f74e67656ec

Link:

https://www.unpac.me/results/5da477e2-9978-4e65-ae9b-a5dcf6691a48/

SH256 hash:

62757af7ce2dcfe188245dd26d85e233c2ded82311c600c7c8ec83c8c8a071b2

MD5 hash:

804cc8416b7db140f03d251ca3abbf00

SHA1 hash:

1a1160f7db639606a1046b555b08a43035aff960

Link:

https://www.unpac.me/results/5da477e2-9978-4e65-ae9b-a5dcf6691a48/

SH256 hash:

5b1fa880d6f314e204011dae8376ae6766d350277c5b80859efe775b5fd7091b

MD5 hash:

4f289aa022ef4ee7b22a3163725940a7

SHA1 hash:

0e601846eeb15dea9ab28e27f75e6aff45d4f241

Link:

https://www.unpac.me/results/5da477e2-9978-4e65-ae9b-a5dcf6691a48/

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/5b1fa880d6f314e204011dae8376ae6766d350277c5b80859efe775b5fd7091b

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

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:	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:	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:	shellcode Create hunting rule
Author:	nex
Description:	Matched shellcode byte patterns

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

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 5b1fa880d6f314e204011dae8376ae6766d350277c5b80859efe775b5fd7091b

(this sample)

Delivery method

Distributed via e-mail attachment

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