MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 7f3b3f489c04f2d2de967d41bdf561fd88fa5af7f128ebae5c60632b15cacae3. 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 12 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 7f3b3f489c04f2d2de967d41bdf561fd88fa5af7f128ebae5c60632b15cacae3
SHA3-384 hash: 5fa4c544031fad93807305943bf64cc5f5a718bf648b18d54ee5f91f73e0f5088644490c5c4e3f2e603f04ecd8e233c9
SHA1 hash: e321f74acd932f109dc3a32ca5a45c74c4bfaebd
MD5 hash: 9418e0df34a9aa40a93f09c18894b322
humanhash: minnesota-nuts-fifteen-mango
File name:PO-4900282088.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:914'432 bytes
First seen:2025-01-27 14:02:58 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 24576:U1rw/7nJpd9fVyGj3HdAaFNHlTLFz6us:UVElpzJj3mATRzhs
TLSH T1B1156AD03B26A3D9CE6B6930955D9FF583B339677404B9E636D83B4631E831E9A18F00
TrID 71.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.2% (.EXE) Win64 Executable (generic) (10522/11/4)
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)
Magika pebin
File icon (PE):PE icon
dhash icon c0803c34261684f8 (4 x Formbook, 1 x SnakeKeylogger)
Reporter Anonymous
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
1'292
Origin country :
PL PL
Vendor Threat Intelligence
Detection(s):
SecuriteInfo.com.MSIL.Kryptik.WZA.UNOFFICIAL
Create hunting rule

Gathering data
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
Adding an exclusion to Microsoft Defender
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
obfuscated packed packed packer_detected phishing vbnet
Link:
https://www.filescan.io/uploads/6797921a3e839821fe18e4aa/reports/335d43e5-3dc5-44aa-a4d9-929deaa50bfb/overview
Verdict:
Malicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/7f3b3f489c04f2d2de967d41bdf561fd88fa5af7f128ebae5c60632b15cacae3
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
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/345c7d6b-3600-4298-8130-b190cb0a46d2
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1600423
Signature
.NET source code contains potential unpacker
Adds a directory exclusion to Windows Defender
Antivirus detection for URL or domain
Found direct / indirect Syscall (likely to bypass EDR)
Injects a PE file into a foreign processes
Joe Sandbox ML detected suspicious sample
Loading BitLocker PowerShell Module
Machine Learning detection for sample
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
Performs DNS queries to domains with low reputation
Queues an APC in another process (thread injection)
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
Switches to a custom stack to bypass stack traces
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1600423 Sample: PO-4900282088.exe Startdate: 27/01/2025 Architecture: WINDOWS Score: 100 37 www.letsbookcruise.xyz 2->37 39 www.begumk.xyz 2->39 41 19 other IPs or domains 2->41 49 Antivirus detection for URL or domain 2->49 51 Multi AV Scanner detection for submitted file 2->51 53 Yara detected FormBook 2->53 57 5 other signatures 2->57 10 PO-4900282088.exe 4 2->10         started        signatures3 55 Performs DNS queries to domains with low reputation 39->55 process4 file5 35 C:\Users\user\...\PO-4900282088.exe.log, ASCII 10->35 dropped 69 Adds a directory exclusion to Windows Defender 10->69 71 Injects a PE file into a foreign processes 10->71 14 PO-4900282088.exe 10->14         started        17 powershell.exe 23 10->17         started        signatures6 process7 signatures8 73 Maps a DLL or memory area into another process 14->73 19 XyN08Ff3r90U6EIFftv7qW.exe 14->19 injected 75 Loading BitLocker PowerShell Module 17->75 22 WmiPrvSE.exe 17->22         started        24 conhost.exe 17->24         started        process9 signatures10 59 Found direct / indirect Syscall (likely to bypass EDR) 19->59 26 ROUTE.EXE 13 19->26         started        process11 signatures12 61 Tries to steal Mail credentials (via file / registry access) 26->61 63 Tries to harvest and steal browser information (history, passwords, etc) 26->63 65 Modifies the context of a thread in another process (thread injection) 26->65 67 3 other signatures 26->67 29 XyN08Ff3r90U6EIFftv7qW.exe 26->29 injected 33 firefox.exe 26->33         started        process13 dnsIp14 43 www.cruycq.info 47.83.1.90, 53298, 53299, 53300 VODANETInternationalIP-BackboneofVodafoneDE United States 29->43 45 www.actionhub.live 67.223.117.189, 53290, 53291, 53292 VIMRO-AS15189US United States 29->45 47 7 other IPs or domains 29->47 77 Found direct / indirect Syscall (likely to bypass EDR) 29->77 signatures15
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/7f3b3f489c04f2d2de967d41bdf561fd88fa5af7f128ebae5c60632b15cacae3
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/7f3b3f489c04f2d2de967d41bdf561fd88fa5af7f128ebae5c60632b15cacae3/
Threat name:
Win32.Trojan.Leonem
Create hunting rule
Status:
Malicious
First seen:
2025-01-26 16:57:41 UTC
File Type:
PE (.Net Exe)
Extracted files:
10
AV detection:
18 of 24 (75.00%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=p45t6se4atznfxuwpva335lb7wepuwxx6euoxls4mbrswfokzlrq._file
Result
Malware family:
n/a
Score:
  8/10
Tags:
discovery execution
Link:
https://tria.ge/reports/250127-rcnzwssncr/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Checks computer location settings
Command and Scripting Interpreter: PowerShell
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/8eacd8af-e1c2-41f4-9c7a-1d5aa8bfccfb
Unpacked files
SH256 hash:
9c531ba6aa9308054cf68f3495891749b1677813f017a5f16cd442cf2b93b4f3
MD5 hash:
2eeecde3cd6727b87f7b87dc2cf6c165
SHA1 hash:
ef26ea16a1ebb8e2e5ce7c331ac9502b71f8b773
Detections:
win_formbook_g0
Create hunting rule
Link:
https://www.unpac.me/results/2ac6317a-d08a-476b-aafb-3b4d6636aec0/
Parent samples :
d1a82af2d052117e637c17671568650659a93541083f107e4d1b2d357935928d
cabc5d9c4521d4ed396a616015bc0ce4f0a23e287a7dfbbcff504b1235ac4aad
7f3b3f489c04f2d2de967d41bdf561fd88fa5af7f128ebae5c60632b15cacae3
320daf03f7f2b9e697955ebc5c479c51fa3fb32caf789187c54b52749550305a
SH256 hash:
302a4d8658c6844529ed769c6a29673a036a765bb8dc22fd2bd0d4abc3bf84ad
MD5 hash:
470a56c745079cca34d6d4698f109f67
SHA1 hash:
c139009d57b1cae9d0915157245b20e273106b2d
Link:
https://www.unpac.me/results/2ac6317a-d08a-476b-aafb-3b4d6636aec0/
SH256 hash:
87cc028f7ae0d0e6bcd6c51efe2f5f953a1ac3d8bcc5230b3aa00ebb53fe3c60
MD5 hash:
0b176168a09aebf6789b6603c64da4ea
SHA1 hash:
73fc8b4823dbacce877063ed5d9739c51ec55685
Detections:
SUSP_OBF_NET_ConfuserEx_Name_Pattern_Jan24
Create hunting rule
SUSP_OBF_NET_Reactor_Indicators_Jan24
Create hunting rule
Link:
https://www.unpac.me/results/2ac6317a-d08a-476b-aafb-3b4d6636aec0/
SH256 hash:
e0c00449878e66f919b23ca968f9ec6854f1ba1aecb2b115c33ebbfde3c6ed49
MD5 hash:
167969aa454d5ebbeae4a43fb086fa82
SHA1 hash:
642318661b9418ae7e4e99124cc035c92c5fa5af
Detections:
SUSP_OBF_NET_ConfuserEx_Name_Pattern_Jan24
Create hunting rule
Link:
https://www.unpac.me/results/2ac6317a-d08a-476b-aafb-3b4d6636aec0/
SH256 hash:
db86194244100e03237d561d07295bdd6e27bb998ef6ef8f7efa67947457c1e7
MD5 hash:
2f9e10066cb2fe517ba3bc0ef37e21e3
SHA1 hash:
4b6d0c61fc52af571814911aabe22b442cda5185
Link:
https://www.unpac.me/results/2ac6317a-d08a-476b-aafb-3b4d6636aec0/
SH256 hash:
7f3b3f489c04f2d2de967d41bdf561fd88fa5af7f128ebae5c60632b15cacae3
MD5 hash:
9418e0df34a9aa40a93f09c18894b322
SHA1 hash:
e321f74acd932f109dc3a32ca5a45c74c4bfaebd
Link:
https://www.unpac.me/results/2ac6317a-d08a-476b-aafb-3b4d6636aec0/
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:Formbook
Create hunting rule
Author:kevoreilly
Description:Formbook Payload
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: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:Sus_Obf_Enc_Spoof_Hide_PE
Create hunting rule
Author:XiAnzheng
Description:Check for Overlay, Obfuscating, Encrypting, Spoofing, Hiding, or Entropy Technique(can create FP)

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

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