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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a2872a57bbad4ddbd5a46e2bd32d502b0f8e0682d89869b72613d5bd5f74b580. 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: 16


Intelligence 16 IOCs YARA 8 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a2872a57bbad4ddbd5a46e2bd32d502b0f8e0682d89869b72613d5bd5f74b580
SHA3-384 hash: 38a03e91df924e892ccf26bd0837ee37f5663abb4ff0e639f7f0548c9a2c88ab3605bbe12c862b92993fcad3103f2afb
SHA1 hash: 8b9af34bb7e19078f1f05ea4481194791727944d
MD5 hash: 9e85094d5adc576149b0b61728eb1b1c
humanhash: table-pluto-nine-fifteen
File name:ARRIVAL-NOTICE-pdf.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:585'872 bytes
First seen:2026-01-08 08:30:44 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 56a78d55f3f7af51443e58e0ce2fb5f6 (739 x GuLoader, 453 x Formbook, 295 x Loki)
ssdeep 12288:WbjSjfsuPH0JjaIsNULtE5oK9PMaYQ9WN09z:WbOjfJPH0Juh6GKK9mQ9ya
Threatray 2'478 similar samples on MalwareBazaar
TLSH T1FAC4F1223B15D907E29121B05922EBBD5BB0AF6D2D598B03B7F13E6F79393536C1E240
TrID 47.3% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13)
15.9% (.EXE) Win64 Executable (generic) (10522/11/4)
9.9% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
7.6% (.EXE) Win16 NE executable (generic) (5038/12/1)
6.8% (.EXE) Win32 Executable (generic) (4504/4/1)
Magika pebin
dhash icon 66feffbcd4f0b864 (3 x GuLoader, 1 x Formbook)
Reporter adrian__luca
Tags:exe FormBook signed

Code Signing Certificate

Organisation:Fortifications
Issuer:Fortifications
Algorithm:sha256WithRSAEncryption
Valid from:2025-11-22T02:07:19Z
Valid to:2026-11-22T02:07:19Z
Serial number: 10f3eba74bf879bb325a7fee6314b6f235f0602f
Thumbprint Algorithm:SHA256
Thumbprint: 80052697164fedbb95b1001f7a78bbf3404b137059ff941c2713c89d97c66342
Source:This information was brought to you by ReversingLabs A1000 Malware Analysis Platform

Intelligence

File Origin
# of uploads :
1
# of downloads :
165
Origin country :
HU HU
Vendor Threat Intelligence
Malware configuration found for:
GuLoader NSIS
Details
GuLoader
a c2 URL, a useragent string, and a string XOR key
GuLoader
an XOR decryption key and an extracted component
NSIS
extracted archive contents
Link:
https://research.acce.ciphertechsolutions.com/results/bbeae2e7-ed63-447c-b71c-34f35c3fedb9/
Malware family:
n/a
ID:
1
File name:
ARRIVAL-NOTICE-pdf.exe
Verdict:
Malicious activity
Analysis date:
2026-01-08 08:33:41 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/9b733519-e7bc-426f-8bae-72fd8b578aec

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/48157/
Verdict:
Malicious
Score:
99.1%
Link:
https://cyber-fortress.com/docs/result/index.php?id=695f6b66f50945831dfeb78c
Tags:
underscore injection virus blic
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Searching for the window
Creating a file
Creating a file in the %temp% directory
Delayed reading of the file
DNS request
Unauthorized injection to a recently created process
Restart of the analyzed sample
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
adaptive-context anti-debug blackhole guloader installer installer installer-heuristic microsoft_visual_cc nsis overlay signed smb
Link:
https://www.filescan.io/uploads/695f6b5987e75cdd5af8730d/reports/45302e60-1f24-4c63-b02a-f5d948518729/overview
Verdict:
Unknown
Link:
https://www.hybrid-analysis.com/sample/a2872a57bbad4ddbd5a46e2bd32d502b0f8e0682d89869b72613d5bd5f74b580
Verdict:
Malicious
File Type:
exe x32
First seen:
2025-12-28T11:12:00Z UTC
Last seen:
2026-01-09T23:19:00Z UTC
Hits:
~100
Detections:
HEUR:Trojan.Win32.GuLoader.gen Trojan-Downloader.Win32.Minix.sb Trojan.Win32.Guloader.sb Trojan.NSIS.Makoob.sbb Trojan.NSIS.Makoob.sba
Link:
https://opentip.kaspersky.com/a2872a57bbad4ddbd5a46e2bd32d502b0f8e0682d89869b72613d5bd5f74b580/results?tab=lookup
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/978fc181-138f-4318-92f4-35265290e565
Score:
92%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/a2872a57bbad4ddbd5a46e2bd32d502b0f8e0682d89869b72613d5bd5f74b580
Verdict:
inconclusive
YARA:
5 match(es)
Tags:
Executable NSIS Installer PE (Portable Executable) PE File Layout Win 32 Exe x86
Link:
https://app.malva.re/file/9e85094d5adc576149b0b61728eb1b1c
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/a2872a57bbad4ddbd5a46e2bd32d502b0f8e0682d89869b72613d5bd5f74b580/
Verdict:
Malicious
Threat:
Family.FORMBOOK
Link:
https://tip.neiki.dev/file/a2872a57bbad4ddbd5a46e2bd32d502b0f8e0682d89869b72613d5bd5f74b580
Threat name:
Win32.Trojan.Guloader
Create hunting rule
Status:
Malicious
First seen:
2025-12-29 00:33:10 UTC
File Type:
PE (Exe)
Extracted files:
20
AV detection:
23 of 36 (63.89%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=ukdsuv53vvg5xvnenyv5glkqfmhy4buc3cmgtnzgcpk32x3uwwaa._file
Verdict:
malicious
Label(s):
cloudeye
Create hunting rule
Similar samples:
0399c34993fa4537408a571820f9f1d8b56c0348007baf90c2c93cd88085ac7d
Formbook
7c3335bf6c2f5b7ca5bd189f70e3f39095ee5df24353462694b9498d108835bf
Formbook
8d6b1eb9182980493d21fb6d78435775b0fd33ece6bc17c53e1eeaf084a7f975
Formbook
90e8b7e31fd00f3209ed27b8eb5f74ac9b0b29aa9eeacc116518c9912ab11378
Formbook
9d3a4319952de04093b0b9515cfc0ead76aab32013c070499437b08a05e879f3
Formbook
a2872a57bbad4ddbd5a46e2bd32d502b0f8e0682d89869b72613d5bd5f74b580
Formbook
error
Formbook
+ 2'468 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook discovery rat spyware stealer trojan
Link:
https://tria.ge/reports/260108-keytjses4e/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Drops file in Program Files directory
Drops file in Windows directory
Suspicious use of NtCreateThreadExHideFromDebugger
Suspicious use of NtSetInformationThreadHideFromDebugger
Legitimate hosting services abused for malware hosting/C2
Loads dropped DLL
Formbook payload
Formbook
Formbook family
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/b149ce6a-75a7-4326-9484-32b3e2a9a8a0
Unpacked files
SH256 hash:
a2872a57bbad4ddbd5a46e2bd32d502b0f8e0682d89869b72613d5bd5f74b580
MD5 hash:
9e85094d5adc576149b0b61728eb1b1c
SHA1 hash:
8b9af34bb7e19078f1f05ea4481194791727944d
Link:
https://www.unpac.me/results/bafe374e-1c43-400b-849c-977582335318/
SH256 hash:
8dc562cda7217a3a52db898243de3e2ed68b80e62ddcb8619545ed0b4e7f65a8
MD5 hash:
cff85c549d536f651d4fb8387f1976f2
SHA1 hash:
d41ce3a5ff609df9cf5c7e207d3b59bf8a48530e
Link:
https://www.unpac.me/results/bafe374e-1c43-400b-849c-977582335318/
Malware family:
GuLoader
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/a2872a57bbad/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/a2872a57bbad4ddbd5a46e2bd32d502b0f8e0682d89869b72613d5bd5f74b580

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__API
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DetectEncryptedVariants
Create hunting rule
Author:Zinyth
Description:Detects 'encrypted' in ASCII, Unicode, base64, or hex-encoded
Rule name:Detect_NSIS_Nullsoft_Installer
Create hunting rule
Author:Obscurity Labs LLC
Description:Detects NSIS installers by .ndata section + NSIS header string
Rule name:golang_bin_JCorn_CSC846
Create hunting rule
Author:Justin Cornwell
Description:CSC-846 Golang detection ruleset
Rule name:pe_detect_tls_callbacks
Create hunting rule
Rule name:PE_Digital_Certificate
Create hunting rule
Author:albertzsigovits
Rule name:shellcode
Create hunting rule
Author:nex
Description:Matched shellcode byte patterns
Rule name:Sus_CMD_Powershell_Usage
Create hunting rule
Author:XiAnzheng
Description:May Contain(Obfuscated or no) Powershell or CMD Command that can be abused by threat actor(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 a2872a57bbad4ddbd5a46e2bd32d502b0f8e0682d89869b72613d5bd5f74b580

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/48157/

Comments