MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 6bd3e0a979dc756642ce746393277e69301b3fe43aa4f30b7c8fbc563d7ae842. 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: 6


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

SHA256 hash: 6bd3e0a979dc756642ce746393277e69301b3fe43aa4f30b7c8fbc563d7ae842
SHA3-384 hash: 1f0868a72ed03cf6997c17974583882f6348325bf89848b33053b195c48ad9b3517671b50092ee589f7393cc7feae0c1
SHA1 hash: fcad4f405e4e38cbe83981fdb2935c9c0d41fa61
MD5 hash: 7874a68e9ffd47b1f75e64dd736c4924
humanhash: five-east-music-white
File name:change in staff positions pdf.r00
Download: download sample
Signature Formbook
Create hunting rule
File size:295'541 bytes
First seen:2023-10-05 08:32:25 UTC
Last seen:Never
File type: r00
MIME type:application/x-rar
ssdeep 6144:A9C7HtToil+10FGhixMpit1Ho6k0wzHq9/CYArX/F2A1:A9ge10Ahixwivo6twzHq9/CYATdT1
TLSH T14454239C16D830A137C990C99FBB1037A9026485D39B4AC3DD3E8F99EEA9E72607540F
TrID 61.5% (.RAR) RAR compressed archive (v5.0) (8000/1)
38.4% (.RAR) RAR compressed archive (gen) (5000/1)
Reporter cocaman
Tags:FormBook r00


Avatar
cocaman
Malicious email (T1566.001)
From: "HR <hr@gemsl.com>" (likely spoofed)
Received: "from [81.161.229.115] (unknown [81.161.229.115]) "
Date: "5 Oct 2023 06:07:18 +0200"
Subject: "Changes in staff positions Thursday 05-Oct-23"
Attachment: "change in staff positions pdf.r00"

Intelligence

File Origin
# of uploads :
1
# of downloads :
74
Origin country :
CH CH
File Archive Information

This file archive contains 1 file(s), sorted by their relevance:

File name:change in staff positions pdf.exe
File size:310'982 bytes
SHA256 hash: 393f41d6aaa447a3fc89f83b3ffb08574464197bf45704ba8226cd070b63c6ed
MD5 hash: bc18302569c7391add21bcf078c569e5
MIME type:application/x-dosexec
Signature Formbook
Vendor Threat Intelligence
Detection(s):
Sanesecurity.Malware.27342.RarHeur.v5.HideExt.UNOFFICIAL
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Sanesecurity.Rogue.0hr.20231005-0837.UNOFFICIAL
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Gathering data
Verdict:
Malicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/6bd3e0a979dc756642ce746393277e69301b3fe43aa4f30b7c8fbc563d7ae842
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.
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/6bd3e0a979dc756642ce746393277e69301b3fe43aa4f30b7c8fbc563d7ae842/
Threat name:
Win32.Trojan.Znyonm
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Status:
Malicious
First seen:
2023-10-05 00:05:31 UTC
File Type:
Binary (Archive)
Extracted files:
4
AV detection:
18 of 36 (50.00%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=npj6bklz3r2wmqwoorrzgj36neybwp7ehkspgc34r66fmpl25bba._file
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Formbook
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/6bd3e0a979dc756642ce746393277e69301b3fe43aa4f30b7c8fbc563d7ae842

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__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:maldoc_find_kernel32_base_method_1
Create hunting rule
Author:Didier Stevens (https://DidierStevens.com)
Rule name:maldoc_getEIP_method_1
Create hunting rule
Author:Didier Stevens (https://DidierStevens.com)
Rule name:MD5_Constants
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Author:phoul (@phoul)
Description:Look for MD5 constants
Rule name:meth_get_eip
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Author:Willi Ballenthin
Rule name:meth_stackstrings
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Author:Willi Ballenthin
Rule name:RIPEMD160_Constants
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Author:phoul (@phoul)
Description:Look for RIPEMD-160 constants
Rule name:SEH__vectored
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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:Windows_Trojan_Formbook
Create hunting rule
Author:@malgamy12
Rule name:Windows_Trojan_Formbook_1112e116
Create hunting rule
Author:Elastic Security
Rule name:win_formbook_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:Detects win.formbook.
Rule name:win_formbook_g0
Create hunting rule
Author:Slavo Greminger, SWITCH-CERT
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.

Malspam

Formbook

r00 6bd3e0a979dc756642ce746393277e69301b3fe43aa4f30b7c8fbc563d7ae842

(this sample)

Formbook

Executable exe 393f41d6aaa447a3fc89f83b3ffb08574464197bf45704ba8226cd070b63c6ed

  
Delivery method
Distributed via e-mail attachment
  
Dropping
SHA256 393f41d6aaa447a3fc89f83b3ffb08574464197bf45704ba8226cd070b63c6ed
  
Dropping
Formbook
  
Dropping
MD5 bc18302569c7391add21bcf078c569e5

Comments