MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 5546bd925d3a06f12ca0509af5db9539517039a2e3ba1f6f942b36f3e0115c8e. 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: 17


Intelligence 17 IOCs YARA 6 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 5546bd925d3a06f12ca0509af5db9539517039a2e3ba1f6f942b36f3e0115c8e
SHA3-384 hash: 54731e574c0c0c4532bac60605687be4e0372f5031c1be0c3ec8eef5ea819f0bf6679db0da1c7786cf234b46b7f467d3
SHA1 hash: 08fd87eb1ae2e9ca6ca5a522569c2e75794d009f
MD5 hash: b36284b7321258b92c54ff5621f90a86
humanhash: paris-shade-moon-happy
File name:BARRACUDDA ISLAND PARTICULARS.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:703'488 bytes
First seen:2025-08-11 14:40:35 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'666 x AgentTesla, 19'479 x Formbook, 12'209 x SnakeKeylogger)
ssdeep 12288:qCyx6HiP4mppIv2LKm+LDfHQ9811YSJr8+kQ3RXI45o7SYQjW+4R:ZKI2LKr/tjNJr8tQm445Q2R
TLSH T186E412953719FA12C8750F305A72D6786A766EEEB102EB139EE47CBB74367052342383
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
Reporter threatcat_ch
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
56
Origin country :
CH CH
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
11082025_1117_11082025_BARRACUDDAISLANDPARTICULARS.zip
Verdict:
Malicious activity
Analysis date:
2025-08-11 11:25:33 UTC
Tags:
arch-exec netreactor formbook xloader stealer
Link:
https://app.any.run/tasks/4eb8b85f-92ff-4b6b-8dae-18750b272543

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/20166/
Verdict:
Malicious
Score:
70%
Link:
https://cyber-fortress.com/docs/result/index.php?id=689a011cfca70bd90e8e36a0
Tags:
malware
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Unauthorized injection to a recently created process
Restart of the analyzed sample
Creating a file
Сreating synchronization primitives
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
packed
Link:
https://www.filescan.io/uploads/689a00eb9ef4d2ff7cf659f8/reports/ae3c44b9-2a0e-42b1-bffb-07fb1d2d4d47/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/5546bd925d3a06f12ca0509af5db9539517039a2e3ba1f6f942b36f3e0115c8e
Malware family:
Formbook
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/3257de26-5be7-4be4-b5d4-6fdd506833af
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1754663
Signature
.NET source code contains potential unpacker
Joe Sandbox ML detected suspicious 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
Queues an APC in another process (thread injection)
Suricata IDS alerts for network traffic
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: 1754663 Sample: BARRACUDDA ISLAND PARTICULARS.exe Startdate: 11/08/2025 Architecture: WINDOWS Score: 100 37 www.wibtogelr.cfd 2->37 39 www.lohaco.jp 2->39 41 5 other IPs or domains 2->41 49 Suricata IDS alerts for network traffic 2->49 51 Multi AV Scanner detection for submitted file 2->51 53 Yara detected FormBook 2->53 55 3 other signatures 2->55 11 BARRACUDDA ISLAND PARTICULARS.exe 3 2->11         started        signatures3 process4 file5 35 C:\...\BARRACUDDA ISLAND PARTICULARS.exe.log, ASCII 11->35 dropped 14 BARRACUDDA ISLAND PARTICULARS.exe 11->14         started        17 BARRACUDDA ISLAND PARTICULARS.exe 11->17         started        19 BARRACUDDA ISLAND PARTICULARS.exe 11->19         started        process6 signatures7 65 Maps a DLL or memory area into another process 14->65 21 2u95fPFUAyoV.exe 14->21 injected process8 process9 23 logman.exe 13 21->23         started        signatures10 57 Tries to steal Mail credentials (via file / registry access) 23->57 59 Tries to harvest and steal browser information (history, passwords, etc) 23->59 61 Modifies the context of a thread in another process (thread injection) 23->61 63 3 other signatures 23->63 26 K5Clt23WTO1.exe 23->26 injected 29 chrome.exe 23->29         started        31 firefox.exe 23->31         started        process11 dnsIp12 43 hivedisc.golf 15.197.225.128, 49695, 80 TANDEMUS United States 26->43 45 www.9am.mobi 154.215.180.80, 49700, 49701, 49702 DXTL-HKDXTLTseungKwanOServiceHK Seychelles 26->45 47 3 other IPs or domains 26->47 33 WerFault.exe 4 29->33         started        process13
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/5546bd925d3a06f12ca0509af5db9539517039a2e3ba1f6f942b36f3e0115c8e
Verdict:
inconclusive
YARA:
5 match(es)
Tags:
.Net Executable PDB Path PE (Portable Executable) SOS: 0.23 Win 32 Exe x86
Link:
https://app.malva.re/file/b36284b7321258b92c54ff5621f90a86
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/5546bd925d3a06f12ca0509af5db9539517039a2e3ba1f6f942b36f3e0115c8e/
Threat name:
ByteCode-MSIL.Trojan.SnakeKeylogger
Create hunting rule
Status:
Malicious
First seen:
2025-08-11 07:30:48 UTC
File Type:
PE (.Net Exe)
Extracted files:
4
AV detection:
18 of 24 (75.00%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=kvdl3es5hidpclfakcnplw4vhfixaonc4o5b634ufm3phyarlsha._file
Verdict:
malicious
Label(s):
unc_loader_037
Create hunting rule
formbook
Create hunting rule
Similar samples:
error
Formbook
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook discovery rat spyware stealer trojan
Link:
https://tria.ge/reports/250811-r18n7svrw5/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Formbook payload
Formbook
Formbook family
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/5fb9f39e-c9f8-404c-9aaf-ed5d6e8f1cf3
Unpacked files
SH256 hash:
5546bd925d3a06f12ca0509af5db9539517039a2e3ba1f6f942b36f3e0115c8e
MD5 hash:
b36284b7321258b92c54ff5621f90a86
SHA1 hash:
08fd87eb1ae2e9ca6ca5a522569c2e75794d009f
Link:
https://www.unpac.me/results/e7458f0d-5776-4010-8eca-39c918e59275/
SH256 hash:
847cbd38279d4f9044ffd9f09f6d0c011b99a423d662eacf41a4c201fe3c1e18
MD5 hash:
dd7efc9d9744180dd37e13cd02fccf83
SHA1 hash:
1a1bcf23123d583ad5106d3cf753aa3aab93e382
Detections:
SUSP_OBF_NET_Reactor_Indicators_Jan24
Create hunting rule
Link:
https://www.unpac.me/results/e7458f0d-5776-4010-8eca-39c918e59275/
Parent samples :
0e5ca2f31f00e3aa1eacf918dc957e020d92f8d0198dad5766afb3f101a117d4
37fc883dc7dca2f74947e57ef839c8a2349330ea9e32cb3445f76ebc3c901741
5d56ab1e8c868c5c4bb5baac467c80275f3348a5ae02b009aa39e62aa0b99c49
5546bd925d3a06f12ca0509af5db9539517039a2e3ba1f6f942b36f3e0115c8e
ffec8bac69d96ff2159ec9ad6e09525f133e15256079c7f54332e45ca1aed004
75dcf23c113abd3be7403b977093d83f208ae38773e89bdbc8b2090ec45c24dc
2916bffe78f4e2f157285a37c266d23fd9158c5517bbf138c565d8429d2b7572
SH256 hash:
41f05afc77e61e5ae04b486865fdc040f2baef2a48aa0c6c669cb8cd06bc9bed
MD5 hash:
0e4b10eb5cd9660ae69f8313a2210869
SHA1 hash:
8257c12bc11ee5a97951d1b9f2bafbeb39680771
Link:
https://www.unpac.me/results/e7458f0d-5776-4010-8eca-39c918e59275/
SH256 hash:
9ebb2e8973bd0ec5881a923b5adee47abeffda4447160df69725ce5318b10fb4
MD5 hash:
fbe67f8b2425bc11a505992b7e6118e1
SHA1 hash:
de5f06fc267459dfb2138f5b5594573cf6ce506d
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/e7458f0d-5776-4010-8eca-39c918e59275/
SH256 hash:
929f68ecbc742673a03b398ee461f40d1b3d528fe3bfd4a37b6fd6b65fb97f94
MD5 hash:
489d02e73ca15a65d2254b2bf5cebca1
SHA1 hash:
a242c550f61bcbe65e1dde36e0f7ce6cdc126218
Link:
https://www.unpac.me/results/e7458f0d-5776-4010-8eca-39c918e59275/
SH256 hash:
4565613916fd018dcdb1f723f6f13b5d54db413cd30b7b61851c3594cf2ae4c4
MD5 hash:
c5e200727717d7b698565d4e22ba4f58
SHA1 hash:
f892d50b5fca3aecd9d175add35f0cc81d0b156f
Detections:
win_formbook_g0
Create hunting rule
Link:
https://www.unpac.me/results/e7458f0d-5776-4010-8eca-39c918e59275/
Parent samples :
5a0211a088e32bc1456d5762c0d09e3e172388a0930fafb94a42f8eee9266c3e
5546bd925d3a06f12ca0509af5db9539517039a2e3ba1f6f942b36f3e0115c8e
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.45
Link:
https://yomi.yoroi.company/submissions/5546bd925d3a06f12ca0509af5db9539517039a2e3ba1f6f942b36f3e0115c8e

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: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: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.

Malspam

Formbook

Executable exe 5546bd925d3a06f12ca0509af5db9539517039a2e3ba1f6f942b36f3e0115c8e

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/20166/

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 (GUARD_CF)high

Comments