MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 614ae605266b9829b5577ebd8562f5fadb2ef82337597d32e54c8ace9f1ea25c. 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: 12


Intelligence 12 IOCs YARA 21 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 614ae605266b9829b5577ebd8562f5fadb2ef82337597d32e54c8ace9f1ea25c
SHA3-384 hash: 510aa667b235248a4c711dbea44385da0f1d7afb234d0bf0b1dba65340390a4ab420c8eebadfe60816afd47213f125c2
SHA1 hash: e06b1561a422b24a8bcb87c91374598a66dec2c8
MD5 hash: c9816a3700accbf435d91e112f2ac978
humanhash: don-sixteen-avocado-montana
File name:614ae605266b9829b5577ebd8562f5fadb2ef82337597d32e54c8ace9f1ea25c
Download: download sample
Signature Formbook
Create hunting rule
File size:723'968 bytes
First seen:2024-03-06 14:28:52 UTC
Last seen:2024-03-06 16:46:47 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'648 x AgentTesla, 19'452 x Formbook, 12'201 x SnakeKeylogger)
ssdeep 12288:/DzScVNgNetDrrBp3Sguj/zNdBL/urcJW0o/Pjk/ehHDgbbuvEpX:rzSOHdBpig+zlmrDnKehHDSmEp
TLSH T107F42331BF88CE5BCE2F4835903157448B7C14150FD9EFCE5FA9A0AEA1B99C6039962D
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) (4504/4/1)
2.0% (.ICL) Windows Icons Library (generic) (2059/9)
File icon (PE):PE icon
dhash icon f0a2aae48ae4e29a (11 x AgentTesla, 3 x Formbook, 1 x PureLogsStealer)
Reporter adrian__luca
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
306
Origin country :
HU HU
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
614ae605266b9829b5577ebd8562f5fadb2ef82337597d32e54c8ace9f1ea25c
Verdict:
Suspicious activity
Analysis date:
2024-03-06 14:28:18 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/1e21d3c6-a317-4047-8b98-f94b6d246761

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
Porcupine.Malware.58887.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Сreating synchronization primitives
Creating a process with a hidden window
Unauthorized injection to a recently created process
Restart of the analyzed sample
Creating a file
Searching for synchronization primitives
Launching the default Windows debugger (dwwin.exe)
Adding an exclusion to Microsoft Defender
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
keylogger packed
Link:
https://www.filescan.io/uploads/65e87db111c3dfa94fc0a98b/reports/7f7133df-c483-4473-a4b2-852e803fa481/overview
Verdict:
Malicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/614ae605266b9829b5577ebd8562f5fadb2ef82337597d32e54c8ace9f1ea25c
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:
Suspicious
Link:
https://analyze.intezer.com/analyses/cf7f6b80-1b73-448f-b515-83d948fba951
Result
Threat name:
FormBook, PureLog Stealer
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1404115
Signature
.NET source code contains method to dynamically call methods (often used by packers)
.NET source code contains potential unpacker
.NET source code contains very large array initializations
Adds a directory exclusion to Windows Defender
Contains functionality to log keystrokes (.Net Source)
Deletes itself after installation
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 submitted file
Queues an APC in another process (thread injection)
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
Yara detected AntiVM3
Yara detected FormBook
Yara detected PureLog Stealer
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1404115 Sample: FMX5v7zzDs.exe Startdate: 06/03/2024 Architecture: WINDOWS Score: 100 30 Malicious sample detected (through community Yara rule) 2->30 32 Multi AV Scanner detection for submitted file 2->32 34 Yara detected PureLog Stealer 2->34 36 8 other signatures 2->36 9 FMX5v7zzDs.exe 4 2->9         started        process3 signatures4 44 Adds a directory exclusion to Windows Defender 9->44 12 FMX5v7zzDs.exe 9->12         started        15 powershell.exe 23 9->15         started        process5 signatures6 46 Maps a DLL or memory area into another process 12->46 17 JnBibMYnKxJq.exe 12->17 injected 19 WmiPrvSE.exe 15->19         started        21 conhost.exe 15->21         started        process7 process8 23 dvdplay.exe 17->23         started        signatures9 38 Deletes itself after installation 23->38 40 Maps a DLL or memory area into another process 23->40 42 Queues an APC in another process (thread injection) 23->42 26 explorer.exe 25 1 23->26 injected 28 JnBibMYnKxJq.exe 23->28 injected process10
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/614ae605266b9829b5577ebd8562f5fadb2ef82337597d32e54c8ace9f1ea25c
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/614ae605266b9829b5577ebd8562f5fadb2ef82337597d32e54c8ace9f1ea25c/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2024-02-27 08:07:03 UTC
File Type:
PE (.Net Exe)
Extracted files:
24
AV detection:
18 of 24 (75.00%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=mffombjgnomctnkxp26ykyxv7lns56bdg5mx2mxfjsfm5hy6ujoa._file
Verdict:
malicious
Result
Malware family:
n/a
Score:
  7/10
Tags:
n/a
Link:
https://tria.ge/reports/240306-rtkc2aea88/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Program crash
Suspicious use of SetThreadContext
Checks computer location settings
Unpacked files
SH256 hash:
db45c91f048f475e4fc2fdd60915c4360a9b54e7495427b4322c5033b114b2cb
MD5 hash:
51db6376d98468b832585c4e032f2d3a
SHA1 hash:
a8fa91d277a15bb73ee53c86b30d4f36309c4dc8
Link:
https://www.unpac.me/results/99b0b09b-3832-46d6-b0a4-4c233edefd4e/
SH256 hash:
b3f2bcb08ae6ed77b51186dc73ac27afc31c9e3b175914fbc7e932a053024057
MD5 hash:
8edcf081ada9f28a2722afb40ac6e099
SHA1 hash:
9a1d6568a6063fccac7eef51a12cbdaa81b82262
Link:
https://www.unpac.me/results/99b0b09b-3832-46d6-b0a4-4c233edefd4e/
SH256 hash:
72638f4b30cc9dab51d31216991957bf1cd118b8a8743227b3e8f9c4805f7628
MD5 hash:
2a8240bba06e832ee5d136a0a7e5b5b9
SHA1 hash:
de49d9b33004a4a622a4279b3ee2b3e3e5cd012b
Link:
https://www.unpac.me/results/99b0b09b-3832-46d6-b0a4-4c233edefd4e/
SH256 hash:
5c7bc91faa8893cd4bb00854437786192e6f2b4284cc6ed6cd3fb6ab57e643ce
MD5 hash:
4ef7dd73c77338caaa746d3ba1793278
SHA1 hash:
b4f54b3cc9683a8272cd5862a93c590fd1824491
Link:
https://www.unpac.me/results/99b0b09b-3832-46d6-b0a4-4c233edefd4e/
SH256 hash:
0190398cd1ee7458b2ad4de5bae10989d4f63420c848cc3c80a3c69296dc383f
MD5 hash:
970503effbe2981f2044430e63d4fb4e
SHA1 hash:
5a4c26491580bd7f79c8a4805ef36e9ecf3f1556
Link:
https://www.unpac.me/results/99b0b09b-3832-46d6-b0a4-4c233edefd4e/
SH256 hash:
614ae605266b9829b5577ebd8562f5fadb2ef82337597d32e54c8ace9f1ea25c
MD5 hash:
c9816a3700accbf435d91e112f2ac978
SHA1 hash:
e06b1561a422b24a8bcb87c91374598a66dec2c8
Link:
https://www.unpac.me/results/99b0b09b-3832-46d6-b0a4-4c233edefd4e/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/614ae605266b/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/614ae605266b9829b5577ebd8562f5fadb2ef82337597d32e54c8ace9f1ea25c

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: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
Reference:https://www.elastic.co/security-labs/formbook-adopts-cab-less-approach
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.

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
IDTitleSeverity
CHECK_AUTHENTICODEMissing Authenticodehigh
CHECK_DLL_CHARACTERISTICSMissing dll Security Characteristics (HIGH_ENTROPY_VA)high

Comments