MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 7a2d439918f752b46c119c13a8e3bc9cecbba270918f52721910ff5447aaefa1. 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: 10


Intelligence 10 IOCs YARA 2 File information Comments
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SHA256 hash: 7a2d439918f752b46c119c13a8e3bc9cecbba270918f52721910ff5447aaefa1
SHA3-384 hash: 79a2ff235e2461e8211c98aa038de668e6eea23b5568cba29e17af67e01323d4e83773f47f3fb241668e6219e2432928
SHA1 hash: 053781a729c82d7f5438eb2a40ae5fd9d5fd84d9
MD5 hash: 1fbd4fefbc554060ddff694374606c48
humanhash: mars-network-robin-alabama
File name:609712.xls.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:544'256 bytes
First seen:2020-08-21 13:10:33 UTC
Last seen:2020-08-21 13:38:07 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'650 x AgentTesla, 19'462 x Formbook, 12'203 x SnakeKeylogger)
ssdeep 6144:NlKNLdi9gd2qOd2q38wHcUxOCiqPKZJVqVbt+0Tr2IU7:PKNLdi9zqhqv8UxOCiJJMdG
Threatray 2'199 similar samples on MalwareBazaar
TLSH 05C43A2B2142C025F721B1B154685AC2A23A7E5C3745CA3FF3DF3F285E3695B762429E
Reporter James_inthe_box
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
116
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/49552/
Detection(s):
SecuriteInfo.com.Trojan.MulDrop13.46063.25369.7915.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
Creating a file in the %temp% directory
Running batch commands
Launching a process
Creating a file in the %AppData% directory
Creating a process from a recently created file
Creating a file
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Unauthorized injection to a recently created process
Result
Threat name:
FormBook
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Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/444285
Signature
.NET source code contains very large array initializations
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Creates an autostart registry key pointing to binary in C:\Windows
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sigma detected: Add file from suspicious location to autostart registry
Uses an obfuscated file name to hide its real file extension (double extension)
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 274942 Sample: 609712.xls.exe Startdate: 23/08/2020 Architecture: WINDOWS Score: 100 39 Malicious sample detected (through community Yara rule) 2->39 41 Antivirus / Scanner detection for submitted sample 2->41 43 Multi AV Scanner detection for submitted file 2->43 45 4 other signatures 2->45 8 609712.xls.exe 7 2->8         started        11 pcalua.exe 1 2->11         started        13 pcalua.exe 1 1 2->13         started        process3 file4 31 C:\Users\user\AppData\Roaming\dsuh.exe, PE32 8->31 dropped 33 C:\Users\user\...\dsuh.exe:Zone.Identifier, ASCII 8->33 dropped 35 C:\Users\user\AppData\...\609712.xls.exe.log, ASCII 8->35 dropped 37 C:\Users\user\AppData\...\AddInProcess32.exe, PE32 8->37 dropped 15 cmd.exe 1 8->15         started        17 dsuh.exe 2 8->17         started        19 dsuh.exe 3 11->19         started        process5 signatures6 22 reg.exe 1 1 15->22         started        25 conhost.exe 15->25         started        27 AddInProcess32.exe 17->27         started        47 Antivirus detection for dropped file 19->47 49 Multi AV Scanner detection for dropped file 19->49 process7 signatures8 51 Creates an autostart registry key pointing to binary in C:\Windows 22->51 29 WerFault.exe 23 7 27->29         started        process9
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/7a2d439918f752b46c119c13a8e3bc9cecbba270918f52721910ff5447aaefa1/
Threat name:
Win32.Trojan.Kryptik
Create hunting rule
Status:
Malicious
First seen:
2020-08-21 11:37:50 UTC
File Type:
PE (.Net Exe)
Extracted files:
15
AV detection:
22 of 29 (75.86%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=piwuhgiy65jli3artqj2ry54ttwlxitqsghve4qzcd7vir5k56qq._file
Verdict:
malicious
Similar samples:
1b114b7614a73e7b1b75355a4904a7314a91c39ec385a246a67624dfc11b7b8e
Formbook
370293d95666a952ba140489c797e3c7d82a92cb400e360f7743075aee04ca10
Formbook
510b24a8ddcc1a99925f07d8ec0b56489930147a95810b787291b3396bd54a7c
Formbook
878d3d77023a927c7dc6aaab23b90cd1203bcd1bacdeedf997692a4c60d24129
Formbook
9963cb9f95312d222c99fac596b5bf02d81ace63ebde79c37e2312d3e2ecd32f
Formbook
9d9739b817d35a815e89c74d8e04d1571e5591de09ca6e8d7a634b140db45605
Formbook
b32579e01c28fc0a157f14ce8c679d02fcd1f5c03f8eef56ba6a77a627786d84
Formbook
c940837494435b53d54b6b4349031a14bf5db905a22b7601e34deb851b109715
Formbook
d4224f6f5b734de53a5a7e5f5675b05f9a808deb058e64d00859146f8255594c
Formbook
d9ba192982200a73ca54ce3c9f10c43a185e0d99864eee685bc7ba70c311110a
Formbook
+ 2'189 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
rat family:formbook
Link:
https://tria.ge/reports/200821-4bansrzj5e/
Behaviour
Formbook Payload
Formbook family
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Barys
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/7a2d439918f752b46c119c13a8e3bc9cecbba270918f52721910ff5447aaefa1

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:Formbook
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect Formbook in memory
Reference:internal research
Rule name:win_formbook_auto
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Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:autogenerated rule brought to you by yara-signator

File information

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

  
Delivery method
Other
Cape
Cape
https://www.capesandbox.com/analysis/49552/

Comments