MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c9fafa3ff81cb5ce2fdc25a61f0267c5324f706b948df55b8ab83a0ca98ad5c5. 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 6 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: c9fafa3ff81cb5ce2fdc25a61f0267c5324f706b948df55b8ab83a0ca98ad5c5
SHA3-384 hash: f20532ed92fbc8d56ee216b6125d83fed59235cb024c7908b21aeb98debc0d2332d2a4b8a5e5db092882720b61cc3367
SHA1 hash: eadefbd6f44d7677692fd5077db81094a5548586
MD5 hash: 2383a6b58b80329f170b29e33ce2d6a1
humanhash: jersey-south-speaker-earth
File name:Payment slip.rar
Download: download sample
Signature Formbook
Create hunting rule
File size:15'155 bytes
First seen:2025-03-11 12:17:27 UTC
Last seen:2025-03-11 14:54:23 UTC
File type: rar
MIME type:application/x-rar
ssdeep 384:1WJelkUq/n1HCv1yb7PoAiHpCgd4NmxQGL:1WJ8uCN2N/gd4NSQQ
TLSH T1FD62BFC1D908ADB564E4DA8E4FBE1F07B9BD2CCD279DB250809DB1DA6350889306A58B
TrID 61.5% (.RAR) RAR compressed archive (v5.0) (8000/1)
38.4% (.RAR) RAR compressed archive (gen) (5000/1)
Magika rar
Reporter cocaman
Tags:FormBook payment rar


Avatar
cocaman
Malicious email (T1566.001)
From: ""Jason Mao" <Jason.mao@yizhanparts.com>" (likely spoofed)
Received: "from yizhanparts.com (unknown [45.144.212.136]) "
Date: "11 Mar 2025 07:50:34 -0700"
Subject: "RE: payment made to your account today "
Attachment: "Payment slip.rar"

Intelligence

File Origin
# of uploads :
5
# of downloads :
79
Origin country :
CH CH
File Archive Information

This file archive contains 2 file(s), sorted by their relevance:

File name:Payment slip.scr
File size:38'912 bytes
SHA256 hash: 5df3cc983cea806c5bda3747bce97f051997d14cf692f2128fb2ad575e56f049
MD5 hash: 7f879ef74891855e9437830ae83d4f40
MIME type:application/x-dosexec
Signature Formbook
File name:32512
File size:20 bytes
SHA256 hash: f78beaa8a648d5fea615e001cf967454caf3607d17409b7fa64ecc4ed4e781db
MD5 hash: dc50bc98ce9fb9d33cb41255cb360332
MIME type:application/octet-stream
Signature Formbook
Vendor Threat Intelligence
Verdict:
Clean
Score:
99.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=67d02ad94fd7d3fd0e082ed8
Tags:
n/a
Verdict:
Unknown
Threat level:
  2.5/10
Confidence:
100%
Tags:
masquerade net_reactor obfuscated packed
Link:
https://www.filescan.io/uploads/67d02a0c3c5f644bd94d2bbb/reports/baa19c0c-0ab0-4800-8bba-ce4427f130da/overview
Verdict:
Malicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/c9fafa3ff81cb5ce2fdc25a61f0267c5324f706b948df55b8ab83a0ca98ad5c5
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/c9fafa3ff81cb5ce2fdc25a61f0267c5324f706b948df55b8ab83a0ca98ad5c5/
Threat name:
Win32.Trojan.Znyonm
Create hunting rule
Status:
Malicious
First seen:
2025-03-11 11:30:21 UTC
File Type:
Binary (Archive)
Extracted files:
4
AV detection:
19 of 24 (79.17%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=zh5pup7yds244l64ewtb6athyuze64dlssg7kw4kxa5azkmk2xcq._file
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:mg63 discovery rat spyware stealer trojan
Link:
https://tria.ge/reports/250311-raey7sv1bw/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of UnmapMainImage
Suspicious use of WriteProcessMemory
Program crash
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Formbook payload
Formbook
Formbook family
Suspicious use of NtCreateUserProcessOtherParentProcess
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/c9fafa3ff81cb5ce2fdc25a61f0267c5324f706b948df55b8ab83a0ca98ad5c5

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
Rule name:Sus_Obf_Enc_Spoof_Hide_PE
Create hunting rule
Author:XiAnzheng
Description:Check for Overlay, Obfuscating, Encrypting, Spoofing, Hiding, or Entropy Technique(can create FP)
Rule name:win32_dotnet_obfuscate
Create hunting rule
Author:Reedus0
Description:Rule for detecting .NET obfuscated malware

File information

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

Malspam

Formbook

rar c9fafa3ff81cb5ce2fdc25a61f0267c5324f706b948df55b8ab83a0ca98ad5c5

(this sample)

Formbook

Executable exe 5df3cc983cea806c5bda3747bce97f051997d14cf692f2128fb2ad575e56f049

  
Delivery method
Distributed via e-mail attachment
  
Dropping
SHA256 5df3cc983cea806c5bda3747bce97f051997d14cf692f2128fb2ad575e56f049
  
Dropping
Formbook
  
Dropping
MD5 7f879ef74891855e9437830ae83d4f40

Comments