MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 33d4f40d83493428f817717c92af34b335788346735a5563e7ee515993fa8d93. 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 22 File information Comments

SHA256 hash:	33d4f40d83493428f817717c92af34b335788346735a5563e7ee515993fa8d93
SHA3-384 hash:	2ad93c357e892e683defbde89b672eca65f87893837b91f11f6e43ca27748a8e01f1d4ab182bf3c3e7f8d51892d59ad5
SHA1 hash:	e25713624a7c9c632561fdd9026fcfa1da5cc075
MD5 hash:	3e62dcc8fc5c3eff612278d8768bb86d
humanhash:	six-hamper-nebraska-lamp
File name:	rCustomerOnDemandNotice.exe
Download:	download sample
Signature	Formbook Create hunting rule
File size:	879'616 bytes
First seen:	2023-11-23 15:44:28 UTC
Last seen:	2023-11-23 15:58:01 UTC
File type:	exe
MIME type:	application/x-dosexec
imphash	f34d5f2d4577ed6d9ceec516c1f5a744 (48'657 x AgentTesla, 19'468 x Formbook, 12'206 x SnakeKeylogger)
ssdeep	24576:uy172zSObdMzTmihn7cOz1mg5cAG3voBy:uy17228dMzTmeQOz1mgC3voB
Threatray	121 similar samples on MalwareBazaar
TLSH	T1D715F1006EA95B55F9B6CFFD032C62180FBAAD0E67E3E6344EC564D96063B43C501AB7
TrID	71.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13) 10.2% (.EXE) Win64 Executable (generic) (10523/12/4) 6.3% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2) 4.3% (.EXE) Win32 Executable (generic) (4505/5/1) 2.0% (.ICL) Windows Icons Library (generic) (2059/9)
Reporter	FXOLabs
Tags:	exe FormBook

Intelligence

File Origin

# of uploads :

# of downloads :

321

Origin country :

Vendor Threat Intelligence

Malware family:

n/a

ID:

File name:

New Docs 11_22 Weihnachtsbrief-password(Jy5topDG).zip

Verdict:

Suspicious activity

Analysis date:

2023-11-23 15:35:09 UTC

Tags:

n/a

Link:

https://app.any.run/tasks/0cc80641-0d42-4c43-90db-9dc6321858b7

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/459888/

Detection(s):

SecuriteInfo.com.Trojan.PackedNET.1842.UNOFFICIAL

Result

Verdict:

Malware

Maliciousness:

Behaviour

Creating a window

Searching for synchronization primitives

Launching the default Windows debugger (dwwin.exe)

Searching for the window

Verdict:

Malicious

Threat level:

10/10

Confidence:

100%

Tags:

packed

Link:

https://www.filescan.io/uploads/655f73824ad9ae08369de5c7/reports/edcf40e3-19c7-4352-99f9-b35f176f453c/overview

Verdict:

Malicious

Labled as:

Trojan.Generic

Link:

https://www.hybrid-analysis.com/sample/33d4f40d83493428f817717c92af34b335788346735a5563e7ee515993fa8d93

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.

Verdict:

Malicious

Link:

https://analyze.intezer.com/analyses/d2008317-2687-42fe-912d-d404fe1b83a8

Result

Threat name:

FormBook

Detection:

malicious

Classification:

troj.spyw.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1347032

Signature

.NET source code contains potential unpacker

.NET source code contains very large array initializations

Antivirus detection for URL or domain

Initial sample is a PE file and has a suspicious name

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

Multi AV Scanner detection for domain / URL

Multi AV Scanner detection for submitted file

Performs DNS queries to domains with low reputation

Queues an APC in another process (thread injection)

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

Behaviour

Behavior Graph:

Download SVG

Score:

100%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/33d4f40d83493428f817717c92af34b335788346735a5563e7ee515993fa8d93

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/33d4f40d83493428f817717c92af34b335788346735a5563e7ee515993fa8d93/

Threat name:

ByteCode-MSIL.Trojan.AgentTesla

Status:

Malicious

First seen:

2023-11-22 18:25:16 UTC

File Type:

PE (.Net Exe)

Extracted files:

AV detection:

22 of 36 (61.11%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=gpkpidmdje2cr6axof6jflzuwm2xra2gonnfky7h5zivte72rwjq._file

Verdict:

malicious

Label(s):

formbook

Formbook

2bf88c8e82f306e249d71856460626383a4befe7ca9115afbddbae0c7a960242

Formbook

3ea69a1a0c5cc196a71ab1d7754abe0683813ff321d59d731bb72d2d3d076f3f

Formbook

5669840788d19dbb20f845d3beffd4ba401886023cb434fc944ad8c2c002b84c

Formbook

9761c8e02b65302ac53c1354d1b9c0ae5799523213d96e0b941df7699f0fa722

Formbook

b960e59e160d3b049843908bcfb05c00326a252a574de70d2126ddaa8f48a962

Formbook

da49519a5670d282de449cee9f55bfdfb034d4fd011e7420152ed3e841a00372

Formbook

e0793d63666fd27dd0132db7bd77c06ed6fb2d9dd919aa774886e9732e5db57d

Formbook

ed634911cd271d95fde0200d57e20a5d16a33580ae196d97efcc8b3002a5ebc9

Formbook

+ 111 additional samples on MalwareBazaar

Result

Malware family:

n/a

Score:

7/10

Tags:

n/a

Link:

https://tria.ge/reports/231123-s62zaabd6s/

Behaviour

Modifies Internet Explorer settings

Suspicious behavior: EnumeratesProcesses

Suspicious behavior: GetForegroundWindowSpam

Suspicious behavior: MapViewOfSection

Suspicious use of UnmapMainImage

Suspicious use of WriteProcessMemory

Suspicious use of SetThreadContext

Loads dropped DLL

Unpacked files

SH256 hash:

41e245bf0dafde03a575b0d3d6581d5f0e59329047da738ddd88b5e19fe38e87

MD5 hash:

6be36044741307f6bd5dfe7f510a84e8

SHA1 hash:

e5c31ea1f7f5a17098a001af2804aea15405766b

Detections:

win_formbook_w0

win_formbook_g0

Link:

https://www.unpac.me/results/cae70228-9753-421b-a901-3e09583b7e30/

Parent samples :

33d4f40d83493428f817717c92af34b335788346735a5563e7ee515993fa8d93
8a396b8151f475d72a31a9897353e57ee18cd5ec5a4cd82d29998940ff71b3a7
1b245652f8eb90239d220881931099461279d671ad3c9f386c1c93699a9d4fc5
5e8b9a3cfcbc1a19ade37e8d246f61d95caf08ce139b6280b77dea376b626ec7
482fe81656515bb2c9d01bb6d5d6497834fdc36758a069616a4c71a995c10aeb
c01f5a812c3ca378bc066a4fbd56d1ceda30f8b051eaaa4941b9af92956fc8e6
be5ea75b6b003e8d06764370ba6a89be22845dec6bcf25a6f2d50c2d478dd214

SH256 hash:

a0f01eaf0772e8a22deec7deaffe23c78790261a8e917005e7796e12f4b89b6d

MD5 hash:

2d194f56ed6fd1e15d977f873b63df83

SHA1 hash:

adf44b215e43477d8e70b942c528a83df3837c7b

Link:

https://www.unpac.me/results/cae70228-9753-421b-a901-3e09583b7e30/

SH256 hash:

3fc435481d7ef0079bdad4dd86185e61a5092a5df4a3e17a75266cf283effaa1

MD5 hash:

ead80ad88662af6f37f0c49fe6e3fb44

SHA1 hash:

dbeb4019c7337347d1c6d0913c9249021cafd849

Link:

https://www.unpac.me/results/cae70228-9753-421b-a901-3e09583b7e30/

SH256 hash:

d01f3dea3851602ba5a0586c60430d286adf6fcc7e17aab080601a66630606e5

MD5 hash:

579197d4f760148a9482d1ebde113259

SHA1 hash:

cf6924eb360c7e5a117323bebcb6ee02d2aec86d

Link:

https://www.unpac.me/results/cae70228-9753-421b-a901-3e09583b7e30/

SH256 hash:

fde17888dddf7657d95b8ea0704bbb1b2c553c0ae6db5e2979106a36e43b2123

MD5 hash:

e8e0148cfbebc19ee15a75e637cecdc6

SHA1 hash:

bc1eefafabbff2ed93c6ceb28b446c275d0929aa

Link:

https://www.unpac.me/results/cae70228-9753-421b-a901-3e09583b7e30/

SH256 hash:

33d4f40d83493428f817717c92af34b335788346735a5563e7ee515993fa8d93

MD5 hash:

3e62dcc8fc5c3eff612278d8768bb86d

SHA1 hash:

e25713624a7c9c632561fdd9026fcfa1da5cc075

Link:

https://www.unpac.me/results/cae70228-9753-421b-a901-3e09583b7e30/

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/33d4f40d8349/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/33d4f40d83493428f817717c92af34b335788346735a5563e7ee515993fa8d93

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:	AgentTesla_DIFF_Common_Strings_01 Create hunting rule
Author:	schmidtsz
Description:	Identify partial Agent Tesla strings

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:	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 33d4f40d83493428f817717c92af34b335788346735a5563e7ee515993fa8d93

(this sample)

Delivery method

Distributed via e-mail attachment

Cape

https://www.capesandbox.com/analysis/459888/

Comments

Login required

You need to login to in order to write a comment. Login with your abuse.ch account.

No comments found for this malware sample