MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f031fa03b61bd7a49d1500d642e46b4701c6ed40f34a3dc063c4404c7fd5de95. 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: 9


Intelligence 9 IOCs YARA 14 File information Comments 1
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: f031fa03b61bd7a49d1500d642e46b4701c6ed40f34a3dc063c4404c7fd5de95
SHA3-384 hash: 1b953a68e646a8749f936d6c5f1f81d1e3ba7cd7f63f8c2ee6838af90dadf348aeb6213d251a7939c30ec4ed23e36e52
SHA1 hash: f7696f66322c645d5017abb2d7e616522a060e60
MD5 hash: 443837af8359003ab23d9f54f817e560
humanhash: undress-steak-cup-florida
File name:443837af8359003ab23d9f54f817e560
Download: download sample
Signature Formbook
Create hunting rule
File size:172'224 bytes
First seen:2023-09-19 13:08:26 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'663 x AgentTesla, 19'478 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 3072:0YzJh4qeZ5JVIgY8ZdqndhTsDCNtpQ0OtzBSLPNn+8X:7h41Z7+0ChTHt6LpBS9
Threatray 171 similar samples on MalwareBazaar
TLSH T1FAF34AC3B51056E4CC398737D51F98020666FEBBA6B2E81D61C9F26745F3792820AF1B
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)
File icon (PE):PE icon
dhash icon 903464467a644678 (1 x Formbook)
Reporter zbetcheckin
Tags:32 exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
292
Origin country :
FR FR
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/449681/
Detection(s):
SecuriteInfo.com.Win32.PWSX-gen.30273.32031.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Сreating synchronization primitives
Sending an HTTP GET request
Creating a file in the %AppData% directory
Unauthorized injection to a recently created process
Restart of the analyzed sample
Creating a file
Sending a custom TCP request
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
overlay packed packed
Link:
https://www.filescan.io/uploads/65099d6f2d5fc006cad6d48f/reports/932583d1-8047-4920-bdb3-420a80d24f79/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/f031fa03b61bd7a49d1500d642e46b4701c6ed40f34a3dc063c4404c7fd5de95
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:
Unknown
Link:
https://analyze.intezer.com/analyses/b63e1aa8-6e82-4d29-8d56-31b57656d42e
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1310772
Signature
.NET source code contains potential unpacker
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
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 dropped file
Multi AV Scanner detection for submitted file
Queues an APC in another process (thread injection)
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Uses netstat to query active network connections and open ports
Yara detected Costura Assembly Loader
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1310772 Sample: f2U1kuOM62.exe Startdate: 19/09/2023 Architecture: WINDOWS Score: 100 42 Malicious sample detected (through community Yara rule) 2->42 44 Antivirus / Scanner detection for submitted sample 2->44 46 Multi AV Scanner detection for submitted file 2->46 48 5 other signatures 2->48 9 f2U1kuOM62.exe 16 5 2->9         started        14 Rcwwvedwxy.exe 14 5 2->14         started        16 Rcwwvedwxy.exe 4 2->16         started        process3 dnsIp4 40 77.105.147.20, 49710, 49711, 49719 PLUSTELECOM-ASRU Russian Federation 9->40 38 C:\Users\user\AppData\...\Rcwwvedwxy.exe, PE32 9->38 dropped 54 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 9->54 56 Injects a PE file into a foreign processes 9->56 18 f2U1kuOM62.exe 9->18         started        21 f2U1kuOM62.exe 9->21         started        58 Antivirus detection for dropped file 14->58 60 Multi AV Scanner detection for dropped file 14->60 62 Machine Learning detection for dropped file 14->62 23 Rcwwvedwxy.exe 14->23         started        25 Rcwwvedwxy.exe 16->25         started        27 Rcwwvedwxy.exe 16->27         started        file5 signatures6 process7 signatures8 50 Maps a DLL or memory area into another process 18->50 52 Queues an APC in another process (thread injection) 18->52 29 HiMJsTjWbxfyrRMZSzkvuvYrxIQEK.exe 18->29 injected process9 process10 31 NETSTAT.EXE 29->31         started        signatures11 64 Maps a DLL or memory area into another process 31->64 34 explorer.exe 1 1 31->34 injected 36 HiMJsTjWbxfyrRMZSzkvuvYrxIQEK.exe 31->36 injected process12
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/f031fa03b61bd7a49d1500d642e46b4701c6ed40f34a3dc063c4404c7fd5de95/
Threat name:
ByteCode-MSIL.Trojan.Malgent
Create hunting rule
Status:
Malicious
First seen:
2023-09-19 13:09:05 UTC
File Type:
PE (.Net Exe)
Extracted files:
3
AV detection:
18 of 22 (81.82%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=6ay7ua5wdpl2jhivadlefzdli4a4n3ka6nfd3qddyraey76v32kq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
4d61d90d74ffd5bed763498b074fcf82cace2f5d6c7affc209ac917fac3d0912
Formbook
6372a7f93d8048d9105f81e38d773bffd87ab441e8354bc2100ca781d9b43037
Formbook
7496574bfa590d4e3b360f0a485e1d36571b1973fcbe23ec0236700090cc236a
Formbook
8c305a8516089a9e811fbc9cf560b0e36a2494debe59c5677376638c7155a452
Formbook
aee3fa1601e0521d9c628cb2fd13178a06c2f7923478742189026102cda8a494
Formbook
c7d4fd24bc684b1d6132f8435cba9c9120df5a08dee714985e94ef4caae17a72
Formbook
faa252f595975231e286495efd9163606d5675e40e1aa4532eb6a1b957c6a5c8
Formbook
+ 161 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  6/10
Tags:
persistence
Link:
https://tria.ge/reports/230919-qdr79sbb84/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Adds Run key to start application
Unpacked files
SH256 hash:
f031fa03b61bd7a49d1500d642e46b4701c6ed40f34a3dc063c4404c7fd5de95
MD5 hash:
443837af8359003ab23d9f54f817e560
SHA1 hash:
f7696f66322c645d5017abb2d7e616522a060e60
Link:
https://www.unpac.me/results/0a7eeb32-6b46-4ee5-b931-d332e1540309/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Legit
Score:
0.00
Link:
https://yomi.yoroi.company/submissions/f031fa03b61bd7a49d1500d642e46b4701c6ed40f34a3dc063c4404c7fd5de95

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:maldoc_getEIP_method_1
Create hunting rule
Author:Didier Stevens (https://DidierStevens.com)
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_Digital_Certificate
Create hunting rule
Author:albertzsigovits
Rule name:pe_imphash
Create hunting rule
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: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.

Web download

Formbook

Executable exe f031fa03b61bd7a49d1500d642e46b4701c6ed40f34a3dc063c4404c7fd5de95

(this sample)

  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/2712510/
Cape
Cape
https://www.capesandbox.com/analysis/449681/

Comments


Avatar
zbet commented on 2023-09-19 13:08:27 UTC

url : hxxp://77.105.147.20/hih/IMG_710596pdf.exe