MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 1ef388be81d3736c7f150e43658266540d0495b33c351dff18a328f5b8702039. 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: 18


Intelligence 18 IOCs YARA 20 File information Comments
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SHA256 hash: 1ef388be81d3736c7f150e43658266540d0495b33c351dff18a328f5b8702039
SHA3-384 hash: 358ad59da5eab521962796e7a55abdc497835f3b891e7ac602674f9ef17afde23c43c3cdd74c42dd41d994d21598dce8
SHA1 hash: f1e7762a92e95bccb28c481bcd6374aef6cfbddc
MD5 hash: 7bde48345744d0df86e55ddffe6682e4
humanhash: music-west-shade-quiet
File name:Shipping Docs.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:1'025'024 bytes
First seen:2026-02-24 14:28:00 UTC
Last seen:2026-02-24 15:30:27 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'873 x AgentTesla, 19'796 x Formbook, 12'305 x SnakeKeylogger)
ssdeep 24576:exIjgRPYXlDUnk0LKuBGhedGiEkOWLLWIuB+BQv:eyj4PYVUhB0/LQLWIa
Threatray 61 similar samples on MalwareBazaar
TLSH T13F250298671AC817C16663358AF1F77413B84EDED512E7279FED6EFBB822B214C40182
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 James_inthe_box
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
198
Origin country :
US US
Vendor Threat Intelligence
Malware configuration found for:
NETReactor RoboSki
Details
Link:
https://research.acce.ciphertechsolutions.com/results/d6bac779-2272-43ff-b4d8-65f4ddcc6ed2/
Malware family:
formbook
Create hunting rule
ID:
1
File name:
Re_ Packing List and Commercial Invoice for Shipment to Canada and the USA.eml
Verdict:
Malicious activity
Analysis date:
2026-02-24 14:00:22 UTC
Tags:
attachments attc-arch arch-exec stealer formbook xloader
Link:
https://app.any.run/tasks/28c8f61b-3286-48cb-bd02-da4a2722a1a8

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/54442/
Detection(s):
SecuriteInfo.com.Trojan.PackedNET.3462.25102.7666.UNOFFICIAL
Create hunting rule

Verdict:
Clean
Score:
89.3%
Link:
https://cyber-fortress.com/docs/result/index.php?id=699db5848fffa866e3b19f1b
Tags:
n/a
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
krypt lolbin masquerade net_reactor obfuscated packed packed tracker
Link:
https://www.filescan.io/uploads/699db58291ad9169e533b41a/reports/5412b824-ba4e-4ed3-9bb0-dc9b7d0dab26/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/1ef388be81d3736c7f150e43658266540d0495b33c351dff18a328f5b8702039
Verdict:
Malicious
File Type:
exe x32
Detections:
Trojan.MSIL.Crypt.sb PDM:Trojan.Win32.Generic HEUR:Trojan-Spy.MSIL.Noon.gen Backdoor.Agent.HTTP.C&C Trojan-Spy.Noon.HTTP.ServerRequest
Link:
https://opentip.kaspersky.com/1ef388be81d3736c7f150e43658266540d0495b33c351dff18a328f5b8702039/results?tab=lookup
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/1a60f384-d71a-4a1e-917e-0af9f6f4f132
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/1ef388be81d3736c7f150e43658266540d0495b33c351dff18a328f5b8702039
Verdict:
Malware
YARA:
12 match(es)
Tags:
.Net .Net Obfuscator .Net Reactor Executable Managed .NET PDB Path PE (Portable Executable) PE File Layout SOS: 0.57 Win 32 Exe x86
Link:
https://app.malva.re/file/7bde48345744d0df86e55ddffe6682e4
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/1ef388be81d3736c7f150e43658266540d0495b33c351dff18a328f5b8702039/
Verdict:
Malicious
Threat:
Family.FORMBOOK
Link:
https://tip.neiki.dev/file/1ef388be81d3736c7f150e43658266540d0495b33c351dff18a328f5b8702039
Threat name:
Win32.Backdoor.FormBook
Create hunting rule
Status:
Malicious
First seen:
2026-02-24 04:20:03 UTC
File Type:
PE (.Net Exe)
Extracted files:
7
AV detection:
23 of 37 (62.16%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=d3zyrpub2nzwy7yvbzbwlatgkqgqjfnthq2r37yyumuplodqea4q._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
027b246202821c3564dcb1c7bdab3c76bbf77c5b98bb8d862616eb3352ed3fd1
Formbook
0c82b648de097a84476eae0187e6ae187b4ec872a57cb2dd80aa2c5fdac05df3
Formbook
16ff90b14867d9cde7cf8d405da63ea0c87f2c0cada7f00224d0099cb1a27d65
Formbook
351d3d2274389081c215d37dd5ac36e03594eb42123afb49fa5447e60f8156bd
Formbook
9b796f3ed25953c5f786a68211c50a08a630155949e36826ade8c91dd61b70b4
Formbook
b32d05c6d0606ae99980ac52e9acbae681e7c35936abca1aa7bbc66bc25bb0e5
Formbook
c516363e147f458e1806ace3348ded638bfdeef92c663a2478940e45b95cb911
Formbook
+ 51 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/260224-rs5btaav8g/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
System Location Discovery: System Language Discovery
System Network Configuration Discovery: Internet Connection Discovery
Suspicious use of SetThreadContext
Formbook payload
Formbook
Formbook family
Unpacked files
SH256 hash:
1ef388be81d3736c7f150e43658266540d0495b33c351dff18a328f5b8702039
MD5 hash:
7bde48345744d0df86e55ddffe6682e4
SHA1 hash:
f1e7762a92e95bccb28c481bcd6374aef6cfbddc
Link:
https://www.unpac.me/results/e328d405-5498-4b47-903a-0c0a1d4a6eda/
SH256 hash:
fb11ae87a47583695f8c340c20525c0d806680a6bed33986372da63443b27ea3
MD5 hash:
42874980ad6103ae4f7d802cfb35307b
SHA1 hash:
1f1426584e80060edb6c599a25fc769ce2a36fd2
Detections:
SUSP_OBF_NET_ConfuserEx_Name_Pattern_Jan24
Create hunting rule
Link:
https://www.unpac.me/results/e328d405-5498-4b47-903a-0c0a1d4a6eda/
SH256 hash:
7e1ad413becb342eab79a517ed8a986d01ef6234248f837b5cce16df255cfcd5
MD5 hash:
fe6918a61784ffe8063e996735293a1e
SHA1 hash:
d4c22969c56656ac95227680eb1fe8d7d7d55bd8
Link:
https://www.unpac.me/results/e328d405-5498-4b47-903a-0c0a1d4a6eda/
SH256 hash:
34265b21d08db558cef3273edd46e78f5aef684b6da22c208e9d44c48f284918
MD5 hash:
239434cc0b1ad3e68938a8885552d26a
SHA1 hash:
ed54ac5753c012bf39e949e5eabb233b0bc55f7a
Link:
https://www.unpac.me/results/e328d405-5498-4b47-903a-0c0a1d4a6eda/
SH256 hash:
8c5d9e1aaff27c4bba45f73ebc731d7a0cfc076cba9b2623d4ba5116be41eddb
MD5 hash:
7f273ede8abea6352e0e103e666e4e30
SHA1 hash:
f69d7663093128c709dabdba96d214fb8afb67c7
Detections:
win_formbook_g0
Create hunting rule
Link:
https://www.unpac.me/results/e328d405-5498-4b47-903a-0c0a1d4a6eda/
Parent samples :
16ff90b14867d9cde7cf8d405da63ea0c87f2c0cada7f00224d0099cb1a27d65
9b796f3ed25953c5f786a68211c50a08a630155949e36826ade8c91dd61b70b4
6095802613f5bd7c2189dd74f5a473872f7671e174d512f5f30d6475081f37b4
1ef388be81d3736c7f150e43658266540d0495b33c351dff18a328f5b8702039
6b15d702539c47fd54a63bda4d309e06d3c0b92d150f61c0b8b65eae787680be
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/1ef388be81d3/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/1ef388be81d3736c7f150e43658266540d0495b33c351dff18a328f5b8702039

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:CP_Script_Inject_Detector
Create hunting rule
Author:DiegoAnalytics
Description:Detects attempts to inject code into another process across PE, ELF, Mach-O binaries
Rule name:DebuggerCheck__GlobalFlags
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerCheck__QueryInfo
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerHiding__Active
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerHiding__Thread
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:dgaagas
Create hunting rule
Author:Harshit
Description:Uses certutil.exe to download a file named test.txt
Rule name:Formbook
Create hunting rule
Author:kevoreilly
Description:Formbook Payload
Rule name:golang_bin_JCorn_CSC846
Create hunting rule
Author:Justin Cornwell
Description:CSC-846 Golang detection ruleset
Rule name:MD5_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for MD5 constants
Rule name:meth_stackstrings
Create hunting rule
Author:Willi Ballenthin
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:RIPEMD160_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for RIPEMD-160 constants
Rule name:SEH__vectored
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
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:TH_Win_ETW_Bypass_2025_CYFARE
Create hunting rule
Author:CYFARE
Description:Windows ETW Bypass Detection Rule - 2025
Reference:https://cyfare.net/

File information

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

Cape
Cape
https://www.capesandbox.com/analysis/54442/

Comments