MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 81c1d78fd9c2c4e78b74976875c7ea0ac39ab5c87f5d1671e203c8c05bce01ca. 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 1 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 81c1d78fd9c2c4e78b74976875c7ea0ac39ab5c87f5d1671e203c8c05bce01ca
SHA3-384 hash: e4418b1daac3bd01123ffae9c36673688898da12d6cf8a76585a53739dbe39205c388c6666af8bded9d76513ee5e7e95
SHA1 hash: 742e2b17e6e3c5e90098c401ddbccba339ce4c6f
MD5 hash: 1e5fe47835896ae4bb10a382167cf0f1
humanhash: cardinal-gee-idaho-quiet
File name:PI41006.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:363'008 bytes
First seen:2020-10-26 14:11:22 UTC
Last seen:2020-10-26 15:58:08 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 1f8569d21a787b1abc77f7de957f26de (3 x Formbook)
ssdeep 6144:xVIHTKyfQWoiVcy5iqEQC4V5dHDwsaPWNN2gdG96x9hupaO6Sv:IHRfQni2yHEQC4RHDMWWes6Sv
Threatray 2'728 similar samples on MalwareBazaar
TLSH 6E74D011B9D0D031D17301BA81E4E7B24ABEBD316F569A9AB7DD1F4D1AB85C26330B23
Reporter abuse_ch
Tags:exe FormBook


Avatar
abuse_ch
Malspam distributing Formbook:

HELO: rdns0.greapr.xyz
Sending IP: 143.110.148.94
From: Se hee kim<office@greapr.xyz>
Reply-To: <friding7@gmail.com>
Subject: RE: RE: PAYMENT
Attachment: Document.ISO (contains "PI41006.exe")

Intelligence

File Origin
# of uploads :
2
# of downloads :
75
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/79160/
Detection(s):
SecuriteInfo.com.Artemis1E5FE4783589.29497.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Sending a UDP request
Unauthorized injection to a recently created process
Launching cmd.exe command interpreter
DNS request
Sending an HTTP GET request
Unauthorized injection to a system process
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/511871
Signature
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
Modifies the context of a thread in another process (thread injection)
Multi AV Scanner detection for submitted file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
System process connects to network (likely due to code injection or exploit)
Tries to detect virtualization through RDTSC time measurements
Uses netsh to modify the Windows network and firewall settings
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 305069 Sample: PI41006.exe Startdate: 26/10/2020 Architecture: WINDOWS Score: 100 30 www.soundhoney.net 2->30 32 www.sdafund.com 2->32 34 2 other IPs or domains 2->34 42 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->42 44 Malicious sample detected (through community Yara rule) 2->44 46 Multi AV Scanner detection for submitted file 2->46 48 3 other signatures 2->48 11 PI41006.exe 1 2->11         started        signatures3 process4 signatures5 58 Maps a DLL or memory area into another process 11->58 60 Tries to detect virtualization through RDTSC time measurements 11->60 14 PI41006.exe 11->14         started        17 conhost.exe 11->17         started        process6 signatures7 62 Modifies the context of a thread in another process (thread injection) 14->62 64 Maps a DLL or memory area into another process 14->64 66 Sample uses process hollowing technique 14->66 68 Queues an APC in another process (thread injection) 14->68 19 explorer.exe 14->19 injected process8 dnsIp9 36 www.cc-js.com 104.161.56.139, 49745, 80 IOFLOODUS United States 19->36 38 ralphlaurenfabrics.com 34.102.136.180, 49735, 49747, 49750 GOOGLEUS United States 19->38 40 17 other IPs or domains 19->40 50 System process connects to network (likely due to code injection or exploit) 19->50 23 netsh.exe 19->23         started        signatures10 process11 signatures12 52 Modifies the context of a thread in another process (thread injection) 23->52 54 Maps a DLL or memory area into another process 23->54 56 Tries to detect virtualization through RDTSC time measurements 23->56 26 cmd.exe 1 23->26         started        process13 process14 28 conhost.exe 26->28         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/81c1d78fd9c2c4e78b74976875c7ea0ac39ab5c87f5d1671e203c8c05bce01ca/
Threat name:
Win32.Trojan.Tnega
Create hunting rule
Status:
Malicious
First seen:
2020-10-26 02:55:28 UTC
AV detection:
25 of 29 (86.21%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=qha5pd6zylcopc3us5uhlr7kblbzvnoip5orm4pcapemaw6oahfa._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
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f1a12a36b7cdbc3e0429105b407ca042b88c6113e39083abc39316ad835e41fe
Formbook
+ 2'718 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  1/10
Tags:
n/a
Link:
https://tria.ge/reports/201026-mp5qlyxjhx/
Please note that we are no longer able to provide a coverage score for Virus Total.

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:INDICATOR_SUSPICIOUS_Stomped_PECompilation_Timestamp_InTheFuture
Create hunting rule
Author:ditekSHen
Description:Detect executables with stomped PE compilation timestamp that is greater than local current time

File information

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

Malspam

Formbook

iso 3cb0d180932053d77d02b0c78eb19051cf792b8a3ab71ea5f9bbd5d276efe76b

Formbook

Executable exe 81c1d78fd9c2c4e78b74976875c7ea0ac39ab5c87f5d1671e203c8c05bce01ca

(this sample)

  
Dropped by
MD5 663bbc80bfdd87a06c6f7acca2c9d806
  
Delivery method
Distributed via e-mail attachment
  
Dropped by
SHA256 3cb0d180932053d77d02b0c78eb19051cf792b8a3ab71ea5f9bbd5d276efe76b
Cape
Cape
https://www.capesandbox.com/analysis/79160/

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