MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 79b1c6f0974e39d1e4f513eaef5f1f3ad5fd6cd42ce8758f1c7fef791632c82d. 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 14 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 79b1c6f0974e39d1e4f513eaef5f1f3ad5fd6cd42ce8758f1c7fef791632c82d
SHA3-384 hash: 4dfd78ca224db86e3a7437d22e258b425775a7416ad2a3007e1fa057268e4f0d49073a987fd2eb78f890cffb5250cb67
SHA1 hash: 7484a2ce1e87561b05320dc3b0488048b090574d
MD5 hash: 45444ed8c62492e06a04df61e36be59c
humanhash: south-louisiana-pennsylvania-don
File name:Invoice 230892 PDF.zip
Download: download sample
Signature Formbook
Create hunting rule
File size:442'820 bytes
First seen:2023-09-18 14:25:35 UTC
Last seen:Never
File type: zip
MIME type:application/zip
ssdeep 12288:sfLlxLhiy568guzlKcaqFMdBe8Is3vWMaWtoW2:+ltb6TqxuG+7aWtP2
TLSH T11D9423EB11BB9BEA446DBC3450C272AABE73D600A0A5B8C338D51DFD5552CB7843D09E
TrID 80.0% (.ZIP) ZIP compressed archive (4000/1)
20.0% (.PG/BIN) PrintFox/Pagefox bitmap (640x800) (1000/1)
Reporter cocaman
Tags:FormBook INVOICE payment zip


Avatar
cocaman
Malicious email (T1566.001)
From: "Janet Wang <jane@mhi.com.tw>" (likely spoofed)
Received: "from [81.161.229.115] (unknown [81.161.229.115]) "
Date: "18 Sep 2023 16:24:17 +0200"
Subject: "Outstanding Invoices Payment"
Attachment: "Invoice 230892 PDF.zip"

Intelligence

File Origin
# of uploads :
1
# of downloads :
85
Origin country :
CH CH
File Archive Information

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

File name:Invoice 230892 PDF.com
File size:537'088 bytes
SHA256 hash: 21696a3d60cb627bb86b4e08f32f1ae08e348ff3b4e99ad15c85febb1caca754
MD5 hash: 8f95a8029b4f30e0a0bb1d53867927c1
MIME type:application/x-dosexec
Signature Formbook
Vendor Threat Intelligence
Detection(s):
Sanesecurity.Foxhole.Zip_fs438.UNOFFICIAL
Create hunting rule

Result
Verdict:
Unknown
File Type:
ZIP File
Link:
https://app.docguard.net/79b1c6f0974e39d1e4f513eaef5f1f3ad5fd6cd42ce8758f1c7fef791632c82d/results/dashboard
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
masquerade packed
Link:
https://www.filescan.io/uploads/65085dfb1edabd99829c6af8/reports/b0eee5fb-2f34-4f4f-a463-ddb584c74f14/overview
Verdict:
Unknown
Link:
https://www.hybrid-analysis.com/sample/79b1c6f0974e39d1e4f513eaef5f1f3ad5fd6cd42ce8758f1c7fef791632c82d
Result
Verdict:
MALICIOUS
Link:
https://labs.inquest.net/dfi/sha256/79b1c6f0974e39d1e4f513eaef5f1f3ad5fd6cd42ce8758f1c7fef791632c82d
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/79b1c6f0974e39d1e4f513eaef5f1f3ad5fd6cd42ce8758f1c7fef791632c82d/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2023-09-18 00:59:13 UTC
File Type:
Binary (Archive)
Extracted files:
10
AV detection:
18 of 36 (50.00%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=pgy4n4exjy45dzhvcpvo6xy7hlk723guftuhldy4p7xxsfrszawq._file
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:sn26 rat spyware stealer trojan
Link:
https://tria.ge/reports/230918-shwglaab2v/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of UnmapMainImage
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Deletes itself
Formbook payload
Formbook
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/79b1c6f0974e39d1e4f513eaef5f1f3ad5fd6cd42ce8758f1c7fef791632c82d

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
Create hunting rule
Author:phoul (@phoul)
Description:Look for MD5 constants
Rule name:meth_get_eip
Create hunting rule
Author:Willi Ballenthin
Rule name:NET
Create hunting rule
Author:malware-lu
Rule name:pe_imphash
Create hunting rule
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: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

zip 79b1c6f0974e39d1e4f513eaef5f1f3ad5fd6cd42ce8758f1c7fef791632c82d

(this sample)

Formbook

Executable exe 21696a3d60cb627bb86b4e08f32f1ae08e348ff3b4e99ad15c85febb1caca754

  
Delivery method
Distributed via e-mail attachment
  
Dropping
SHA256 21696a3d60cb627bb86b4e08f32f1ae08e348ff3b4e99ad15c85febb1caca754
  
Dropping
MD5 8f95a8029b4f30e0a0bb1d53867927c1

Comments