MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 957f88d1989331dcc99a317bf1abcb6a00d1d778adbad9862a704294a972408a. 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: 7


Intelligence 7 IOCs YARA 17 File information Comments
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SHA256 hash: 957f88d1989331dcc99a317bf1abcb6a00d1d778adbad9862a704294a972408a
SHA3-384 hash: 20c9de49ea25fa64c656e3833057a3075c7247c9d407a1e5a4d3624516e75c370374088f1fb06080f7c338ac6f2b938e
SHA1 hash: c420f58eb9822a8550b37ec33175b0e88d18ab44
MD5 hash: b45fd43e7e9a01d6fb4c327d25e54fd5
humanhash: golf-twelve-early-nitrogen
File name:Annual Leave and Salary Memo_PDF.cab
Download: download sample
Signature Formbook
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File size:345'187 bytes
First seen:2023-08-30 20:35:17 UTC
Last seen:Never
File type: rar
MIME type:application/x-rar
ssdeep 6144:uFFfWQm0mLFo/yA/lGXSJTGfzTM8zAcbyy+sR1gNGAo/hxXg9CpeNcOG:uvf2E1PJazTXH+y+sUoXSCpcG
TLSH T1387423B313BCA11850A16C276C371E91B380B1AC18C5EAE37216FCE7077CEBB9459D06
TrID 61.5% (.RAR) RAR compressed archive (v5.0) (8000/1)
38.4% (.RAR) RAR compressed archive (gen) (5000/1)
Reporter cocaman
Tags:cab FormBook rar


Avatar
cocaman
Malicious email (T1566.001)
From: ""HR Department" <info@sabos-china.com>" (likely spoofed)
Received: "from mail.sabos-china.com (unknown [45.129.0.101]) "
Date: "29 Aug 2023 23:32:00 +0100"
Subject: "/Re: Employees Salary And Annual Leave Approval/Application Form/"
Attachment: "Annual Leave and Salary Memo_PDF.cab"

Intelligence

File Origin
# of uploads :
1
# of downloads :
106
Origin country :
CH CH
File Archive Information

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

File name:Annual Leave and Salary Memo_PDF.exe
File size:360'828 bytes
SHA256 hash: 8e06e30fe6a9c4f64a09da567c0a6d2f01b49622f535122736d1dd7177b7f9be
MD5 hash: 5ac38c0411769fc70fde438d5d74ceeb
MIME type:application/x-dosexec
Signature Formbook
Vendor Threat Intelligence
Detection(s):
Sanesecurity.Rogue.0hr.20230830-1139.UNOFFICIAL
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Result
Verdict:
Unknown
File Type:
PE File
Link:
https://app.docguard.net/957f88d1989331dcc99a317bf1abcb6a00d1d778adbad9862a704294a972408a/results/dashboard
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
control lolbin masquerade overlay packed shell32
Link:
https://www.filescan.io/uploads/64efa833b3b7d7c782d15bcf/reports/6e74a891-cfff-4c27-bf4d-2bdc1877e57c/overview
Verdict:
Malicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/957f88d1989331dcc99a317bf1abcb6a00d1d778adbad9862a704294a972408a
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/957f88d1989331dcc99a317bf1abcb6a00d1d778adbad9862a704294a972408a/
Threat name:
Win32.Trojan.Leonem
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Status:
Malicious
First seen:
2023-08-30 03:55:28 UTC
File Type:
Binary (Archive)
Extracted files:
4
AV detection:
18 of 37 (48.65%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=sv7yrumysmy5zsm2gf57dk6lniandv3yvw5ntbrkobbjjklsicfa._file
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/957f88d1989331dcc99a317bf1abcb6a00d1d778adbad9862a704294a972408a

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
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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
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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
Create hunting rule
Author:Willi Ballenthin
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:Windows_Trojan_Formbook
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Author:@malgamy12
Rule name:Windows_Trojan_Formbook_1112e116
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Author:Elastic Security
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

rar 957f88d1989331dcc99a317bf1abcb6a00d1d778adbad9862a704294a972408a

(this sample)

Formbook

Executable exe 8e06e30fe6a9c4f64a09da567c0a6d2f01b49622f535122736d1dd7177b7f9be

  
Delivery method
Distributed via e-mail attachment
  
Dropping
SHA256 8e06e30fe6a9c4f64a09da567c0a6d2f01b49622f535122736d1dd7177b7f9be
  
Dropping
Formbook
  
Dropping
MD5 5ac38c0411769fc70fde438d5d74ceeb

Comments