MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 51fec247480d39d3fa354fa4a4d81a08155a9de87330d01cc8299e4cbeab6ca5. 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: 15


Intelligence 15 IOCs YARA 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 51fec247480d39d3fa354fa4a4d81a08155a9de87330d01cc8299e4cbeab6ca5
SHA3-384 hash: f9e9b4d29b6e7692a02af6e49b4deb76d993f10991b936a1d669ed5006e530239b5f94b549f7410c0c42e9484dd7b589
SHA1 hash: 1cba7604cd06ff3e4af58a8ebc6dbb4f5cc647a4
MD5 hash: b865d511713d8f0bbb7cd7c209e1e660
humanhash: maryland-florida-quebec-violet
File name:Purchase order Pdf.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:1'021'952 bytes
First seen:2026-08-20 09:26:42 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (49'197 x AgentTesla, 20'351 x Formbook, 12'365 x SnakeKeylogger)
ssdeep 24576:lNctsC1Vdxdh/PkaB1Nl0ADqK3OLp9gHHAvIlmysAguFyQb:Xc51EaDNl5Dq4OIAvI/IuFyQ
TLSH T19725128C32AA8712D5E657F85EB2E13057B53C8D8634D20E5FD02EEF7970B164A14B27
TrID 73.9% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
6.6% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
6.6% (.EXE) Win64 Executable (generic) (6522/11/2)
4.5% (.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 :
163
Origin country :
CH CH
Vendor Threat Intelligence
Malware configuration found for:
RoboSki
Details
Link:
https://research.acce.ciphertechsolutions.com/results/689e84f3-1677-4552-9568-10ad8175fbe4/
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/82199/
Detection(s):
SecuriteInfo.com.Win32.MalwareX-gen.83759339.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file
Creating a window
Сreating synchronization primitives
Unauthorized injection to a recently created process
Restart of the analyzed sample
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
base64 masquerade obfuscated packed
Link:
https://www.filescan.io/uploads/6a86c873d58adbb2e6c362e6/reports/68a8377d-56ba-4a09-8d09-81c5590a9115/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/51fec247480d39d3fa354fa4a4d81a08155a9de87330d01cc8299e4cbeab6ca5
Malware family:
Formbook
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/52cb4ecf-01a7-4b6a-aae1-c76a6fc89674
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1961050
Signature
.NET source code contains potential unpacker
Found direct / indirect Syscall (likely to bypass EDR)
Initial sample is a PE file and has a suspicious name
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)
Unusual module load detection (module proxying)
Yara detected AntiVM3
Yara detected FormBook
Yara detected UAC Bypass using CMSTP
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1961050 Sample: Purchase order Pdf.exe Startdate: 20/08/2026 Architecture: WINDOWS Score: 100 28 www.plainframe.info 2->28 30 www.lalolpo.site 2->30 32 14 other IPs or domains 2->32 48 Suricata IDS alerts for network traffic 2->48 50 Multi AV Scanner detection for submitted file 2->50 52 Yara detected FormBook 2->52 54 7 other signatures 2->54 10 Purchase order Pdf.exe 4 2->10         started        signatures3 process4 file5 26 C:\Users\user\...\Purchase order Pdf.exe.log, ASCII 10->26 dropped 13 Purchase order Pdf.exe 10->13         started        process6 signatures7 56 Modifies the context of a thread in another process (thread injection) 13->56 58 Maps a DLL or memory area into another process 13->58 60 Queues an APC in another process (thread injection) 13->60 62 Found direct / indirect Syscall (likely to bypass EDR) 13->62 16 NQ4XHlIScvu.exe 13->16 injected process8 process9 18 regsvr32.exe 13 16->18         started        signatures10 40 Tries to steal Mail credentials (via file / registry access) 18->40 42 Tries to harvest and steal browser information (history, passwords, etc) 18->42 44 Modifies the context of a thread in another process (thread injection) 18->44 46 3 other signatures 18->46 21 NI7j9gz04uB.exe 18->21 injected 24 firefox.exe 18->24         started        process11 dnsIp12 34 2.59.170.19, 49758, 49759, 49760 WORLDSTREAMNL Netherlands 21->34 36 shieldtechghana.com 104.238.222.48, 49750, 49751, 49752 RELIABLESITE-ReliableSiteNetLLCUS United States 21->36 38 8 other IPs or domains 21->38
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/51fec247480d39d3fa354fa4a4d81a08155a9de87330d01cc8299e4cbeab6ca5
Verdict:
inconclusive
YARA:
5 match(es)
Tags:
.Net Executable Managed .NET PE (Portable Executable) PE File Layout SOS: 0.40 Win 32 Exe x86
Link:
https://app.malva.re/file/b865d511713d8f0bbb7cd7c209e1e660
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/51fec247480d39d3fa354fa4a4d81a08155a9de87330d01cc8299e4cbeab6ca5/
Threat name:
Win32.Trojan.Generic
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Status:
Suspicious
First seen:
2026-08-20 06:40:28 UTC
File Type:
PE (.Net Exe)
Extracted files:
8
AV detection:
14 of 36 (38.89%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=kh7mer2ibu45h6rvj6skjwa2bakvvhpiomynahgifgpezpvlnssq._file
Verdict:
malicious
Label(s):
Formbook
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Link:
https://reports.threatray.com/c55b8137-f4a7-4949-9bb5-02eeb7837c4a
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook discovery rat spyware stealer trojan
Link:
https://tria.ge/reports/260820-levybstdld/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Family: Formbook
Formbook payload
Unpacked files
SH256 hash:
51fec247480d39d3fa354fa4a4d81a08155a9de87330d01cc8299e4cbeab6ca5
MD5 hash:
b865d511713d8f0bbb7cd7c209e1e660
SHA1 hash:
1cba7604cd06ff3e4af58a8ebc6dbb4f5cc647a4
Link:
https://www.unpac.me/results/2cf138fa-8f8b-4188-8a3c-8da533e608dd/
SH256 hash:
8d0d5cca253ae27db341dc761edec9857969bdf7eb393222c71340028a388bc3
MD5 hash:
2af60e550388575429c7bc46368e9bd2
SHA1 hash:
90ece2b9a47b0be4aea9817d6ff24542fda7c9de
Link:
https://www.unpac.me/results/2cf138fa-8f8b-4188-8a3c-8da533e608dd/
SH256 hash:
0afe682ee5061af15ead2890644a1f20f937600684f25412eeb31ecece8f2010
MD5 hash:
ddbea23e3ed17b4084887586ba1c486d
SHA1 hash:
f349b2044cf228c773c57cda2e8bc0776dc3e8fe
Detections:
SUSP_OBF_NET_ConfuserEx_Name_Pattern_Jan24
Create hunting rule
Link:
https://www.unpac.me/results/2cf138fa-8f8b-4188-8a3c-8da533e608dd/
SH256 hash:
fe0a9c5940db96687086393d0e620b4a15e07d1e1e912a54167d846637ce8ae9
MD5 hash:
098a30ac7e22920446a41f6fb0a8df4b
SHA1 hash:
aee4c020509227ffbd5c89ab674ce0f8b9f44d76
Link:
https://www.unpac.me/results/2cf138fa-8f8b-4188-8a3c-8da533e608dd/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/51fec247480d/report/overview.html
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/51fec247480d39d3fa354fa4a4d81a08155a9de87330d01cc8299e4cbeab6ca5

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:NETexecutableMicrosoft
Create hunting rule
Author:malware-lu
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Malspam

Formbook

Executable exe 51fec247480d39d3fa354fa4a4d81a08155a9de87330d01cc8299e4cbeab6ca5

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/82199/

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