MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 e1fd783c3c5c3a686b2ae04b64ecce2b3c5e00d2bed04cdbf8f420a57d82208e. 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: 15

Intelligence 15 IOCs YARA 22 File information Comments

SHA256 hash:	e1fd783c3c5c3a686b2ae04b64ecce2b3c5e00d2bed04cdbf8f420a57d82208e
SHA3-384 hash:	ac1d529c2d1a8e0f66b848f5f3a2693ea2e8a4fb8b4954ca4dee75e7ca14f630db931b13132713dbacebc2219edb9a92
SHA1 hash:	526c5e0280cb55ef308312db603e94af4fee0b42
MD5 hash:	70f1ab254a32c6050743605d6f3384d5
humanhash:	jig-may-floor-table
File name:	Bank Details.pdf.exe
Download:	download sample
Signature	Formbook Create hunting rule
File size:	665'088 bytes
First seen:	2024-04-22 07:26:51 UTC
Last seen:	2024-04-22 08:27:45 UTC
File type:	exe
MIME type:	application/x-dosexec
imphash	f34d5f2d4577ed6d9ceec516c1f5a744 (48'742 x AgentTesla, 19'606 x Formbook, 12'242 x SnakeKeylogger)
ssdeep	12288:3f7mvgKnFHMF9XuroT07oUdMIEoKrom2Az3HCqC48wypy/LfcfhtYiQGMXJEGYc:zmvL9MDXurIMMIEHvzrC489ybcfvxQGs
Threatray	1'056 similar samples on MalwareBazaar
TLSH	T1D5E412447A7E6F8ADABE87B59071A65457B4713F2123E7078EC660CA2D36FC08984F43
TrID	69.7% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13) 10.0% (.EXE) Win64 Executable (generic) (10523/12/4) 6.2% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2) 4.2% (.EXE) Win32 Executable (generic) (4504/4/1) 1.9% (.EXE) Win16/32 Executable Delphi generic (2072/23)
Reporter	cocaman
Tags:	exe FormBook

Intelligence

File Origin

# of uploads :

# of downloads :

335

Origin country :

Vendor Threat Intelligence

Result

Verdict:

Malware

Maliciousness:

Behaviour

Creating a window

Сreating synchronization primitives

Creating a process with a hidden window

Launching a process

Creating a file

Launching cmd.exe command interpreter

Setting browser functions hooks

Forced shutdown of a system process

Adding an exclusion to Microsoft Defender

Unauthorized injection to a system process

Unauthorized injection to a browser process

Verdict:

Likely Malicious

Threat level:

7.5/10

Confidence:

100%

Tags:

masquerade obfuscated packed

Link:

https://www.filescan.io/uploads/6626114775339da04f9b7646/reports/33d94636-d9c7-4c6d-88ae-9525d6c59508/overview

Verdict:

Malicious

Labled as:

Win/malicious_confidence_100%

Link:

https://www.hybrid-analysis.com/sample/e1fd783c3c5c3a686b2ae04b64ecce2b3c5e00d2bed04cdbf8f420a57d82208e

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/86078efc-86ec-429a-b295-ebb43214c518

Result

Threat name:

FormBook

Detection:

malicious

Classification:

troj.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1429492

Signature

.NET source code contains potential unpacker

.NET source code contains very large array initializations

Adds a directory exclusion to Windows Defender

Allocates memory in foreign processes

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

Loading BitLocker PowerShell Module

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)

Multi AV Scanner detection for submitted file

Queues an APC in another process (thread injection)

Sample uses process hollowing technique

Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet

Sigma detected: Suspicious Double Extension File Execution

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

Uses an obfuscated file name to hide its real file extension (double extension)

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/e1fd783c3c5c3a686b2ae04b64ecce2b3c5e00d2bed04cdbf8f420a57d82208e

Detection:

formbook

Link:

https://mwdb.cert.pl/sample/e1fd783c3c5c3a686b2ae04b64ecce2b3c5e00d2bed04cdbf8f420a57d82208e/

Threat name:

ByteCode-MSIL.Trojan.AgentTesla

Status:

Malicious

First seen:

2024-04-22 07:26:57 UTC

File Type:

PE (.Net Exe)

Extracted files:

AV detection:

20 of 24 (83.33%)

Threat level:

5/5

Detection(s):

Malicious file

Link:

https://check.spamhaus.org/check/?searchterm=4h6xqpb4lq5gq2zk4bfwj3gofm6f4agsx3iezw7y6qqkk7mcecha._file

Verdict:

malicious

Label(s):

formbook

Formbook

296ccbad60495d5152717c56a0d871e2fbd5413bbdac0e41edb6fcaccf49db36

Formbook

37fd7b8035bd49b8dfad405a793428dda8cbf623de0133818756d05a1191d8b7

Formbook

47d5dfe5d59cd87f1d41105123e02fa661a17e7e0623125c51956165113f8f4e

Formbook

5e89ab886cf3b566f09eae1c670f3c25748d9ac78bc04d8b34ed71300ee53dc6

Formbook

6c57771cda82415d8e0f6492203eff52a3fb36ea966fad9fc4e7fb4d0de7e378

Formbook

bddecf330d5b3d2c09db0b26dc6367e2e71a2e0317cc65610cd1cca8809fd0e2

Formbook

e1fd783c3c5c3a686b2ae04b64ecce2b3c5e00d2bed04cdbf8f420a57d82208e

Formbook

+ 1'046 additional samples on MalwareBazaar

Result

Malware family:

formbook

Score:

10/10

Tags:

family:formbook campaign:fs83 rat spyware stealer trojan

Link:

https://tria.ge/reports/240422-h931msgh39/

Behaviour

Suspicious behavior: EnumeratesProcesses

Suspicious behavior: MapViewOfSection

Suspicious use of AdjustPrivilegeToken

Suspicious use of UnmapMainImage

Suspicious use of WriteProcessMemory

Enumerates physical storage devices

Suspicious use of SetThreadContext

Checks computer location settings

Formbook payload

Formbook

Unpacked files

SH256 hash:

139f75b55ff904e5ccbc51d61c61de935274c66cfa38d9cb859461ea2216bd81

MD5 hash:

cdf453020c11d01891a06da4b1ec17d3

SHA1 hash:

27f91c5c7afdc57847d17f8274ce3b3ba96bbf8b

Detections:

FormBook

win_formbook_w0

win_formbook_auto

win_formbook_g0

Formbook

Link:

https://www.unpac.me/results/781265ed-0897-4ae0-87b5-b7395f692f8c/

Parent samples :

8ab205dc4d6f7c232cf9e2047a6abf4b2bb6425258cefeaf9b05e922c8229c6a
37fd7b8035bd49b8dfad405a793428dda8cbf623de0133818756d05a1191d8b7
e1fd783c3c5c3a686b2ae04b64ecce2b3c5e00d2bed04cdbf8f420a57d82208e
3fce144519b73bde4b30740ced6678a0aebcfcf00c7ff2ed6f78034cd5900f56
331ca91b3a643aab796547bdd69ecd624ab13ac224ea80f88ca4a8987c0625e3
eec2040b640e5b1806119e1a428d54c4dab8fe87e2afe89570d158968122e4bb

SH256 hash:

2000514c32d6744ea1b9eace5cfc4b18bc3cfad13b28337652a2f121610508e3

MD5 hash:

c2b69b487fea9317dd84088369b48de1

SHA1 hash:

c9e80df48835e41ae4fd0dd8d22e9f1b3e7a542a

Link:

https://www.unpac.me/results/781265ed-0897-4ae0-87b5-b7395f692f8c/

SH256 hash:

3fa0e73845e326b338b8393c4cad1d5c3dde1588b02811ad37621fe744fcae00

MD5 hash:

e1706fa993408403e49ae06447f00c24

SHA1 hash:

901ee3790d15a28ba86d221501e86e5c30c8ac66

Link:

https://www.unpac.me/results/781265ed-0897-4ae0-87b5-b7395f692f8c/

SH256 hash:

02850deb70c084a705009ba06079db8ebda6155baa33e103dadd463ff9dec1b7

MD5 hash:

df9b3842eaefc87c71dcef345ae4700f

SHA1 hash:

1f8c85d6a34622087ae2bc646ef303bda0d94e7b

Link:

https://www.unpac.me/results/781265ed-0897-4ae0-87b5-b7395f692f8c/

SH256 hash:

e1fd783c3c5c3a686b2ae04b64ecce2b3c5e00d2bed04cdbf8f420a57d82208e

MD5 hash:

70f1ab254a32c6050743605d6f3384d5

SHA1 hash:

526c5e0280cb55ef308312db603e94af4fee0b42

Link:

https://www.unpac.me/results/781265ed-0897-4ae0-87b5-b7395f692f8c/

Malware family:

FormBook

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/e1fd783c3c5c/report/overview.html

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

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:	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

r00 938db96ba8d7805216d1159da38fab4bdd45cf95c33190962ab3337e7ad6ccec

Formbook

exe e1fd783c3c5c3a686b2ae04b64ecce2b3c5e00d2bed04cdbf8f420a57d82208e

(this sample)

Delivery method

Other

Dropped by

SHA256 938db96ba8d7805216d1159da38fab4bdd45cf95c33190962ab3337e7ad6ccec

Dropped by

MD5 a4f56daa5924b54370930a94c2047d36

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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