MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 46b29fc514589a1671da29ef67c593086a66359a66ff800ca530887620d98bc6. 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: 8


Intelligence 8 IOCs YARA 2 File information Comments
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SHA256 hash: 46b29fc514589a1671da29ef67c593086a66359a66ff800ca530887620d98bc6
SHA3-384 hash: ca997b6e0de341b0f0e352be293d6dc1f96e37440029b0bde9f888e7cad0b5c3623e61f0936aa3bbb4b19be13078b669
SHA1 hash: d34b50cb518808a0c47108cfb6f5cde7f7b08fad
MD5 hash: b05a1050b277928895e7550be42af992
humanhash: jupiter-glucose-queen-three
File name:18490162.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:518'656 bytes
First seen:2020-07-16 15:14:29 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'462 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 6144:JbO2CS28qtmuFD7ms9BXwfnYAOT6gFRPt3y9Ur/2s0ct97g:Ji2CSVq2s92fnYDP1Hr/2ct
Threatray 5'367 similar samples on MalwareBazaar
TLSH ABB47D363581802CC8260374A43D4AF27E7459FB37968B6FB397130C5E9295BFB1626E
Reporter James_inthe_box
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
85
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/26840/
Detection(s):
Win.Malware.Formbook-7399661-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
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
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/388672
Signature
.NET source code contains very large array initializations
Allocates memory in foreign processes
Creates an autostart registry key pointing to binary in C:\Windows
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sigma detected: Add file from suspicious location to autostart registry
Tries to detect virtualization through RDTSC time measurements
Writes to foreign memory regions
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 246510 Sample: 18490162.exe Startdate: 18/07/2020 Architecture: WINDOWS Score: 100 39 Malicious sample detected (through community Yara rule) 2->39 41 Multi AV Scanner detection for submitted file 2->41 43 Yara detected FormBook 2->43 45 3 other signatures 2->45 8 18490162.exe 5 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\...\application.exe, PE32 8->31 dropped 33 C:\Users\user\AppData\Local\Temp\RegAsm.exe, PE32 8->33 dropped 35 C:\Users\...\application.exe:Zone.Identifier, ASCII 8->35 dropped 37 C:\Users\user\AppData\...\18490162.exe.log, ASCII 8->37 dropped 15 application.exe 8->15         started        18 cmd.exe 1 8->18         started        20 application.exe 1 11->20         started        process5 signatures6 53 Writes to foreign memory regions 15->53 55 Allocates memory in foreign processes 15->55 57 Injects a PE file into a foreign processes 15->57 22 RegAsm.exe 15->22         started        25 reg.exe 1 1 18->25         started        27 conhost.exe 18->27         started        59 Multi AV Scanner detection for dropped file 20->59 61 Machine Learning detection for dropped file 20->61 process7 signatures8 47 Maps a DLL or memory area into another process 22->47 49 Tries to detect virtualization through RDTSC time measurements 22->49 29 explorer.exe 22->29 injected 51 Creates an autostart registry key pointing to binary in C:\Windows 25->51 process9
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/46b29fc514589a1671da29ef67c593086a66359a66ff800ca530887620d98bc6/
Threat name:
ByteCode-MSIL.Trojan.Kryptik
Create hunting rule
Status:
Malicious
First seen:
2020-07-16 15:13:10 UTC
File Type:
PE (.Net Exe)
Extracted files:
33
AV detection:
25 of 29 (86.21%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=i2zj7riulcnbm4o2fhxwprmtbbvgmnm2m37yadffgcehmigzrpda._file
Verdict:
malicious
Similar samples:
08b47c6d183afb72f383ced4639ba73a03d9b36f06617585b3a3d28b69d1ce9f
Formbook
30bbf2043054b92e495bbd55f67e43b8eafce430bf31d8aaa4899385e503cdbe
Formbook
5ea463243b051351c219469515fb9b39d01c5c3c4f4698bd6164e36070622d35
Formbook
80e9eded592bf14b7597f9feaedb2899c1ce69ea74f588f02fdea70ced4539c6
Formbook
8606768cb758ba8379659f65220250ebc1c491dabd668e7f98663571419cadf2
Formbook
9c0d3c463792d704909de3a04cd7a6d31f8094301e8e24950af31cdc5e9f2838
Formbook
9e7fc8b6366c4240285db7831d6fd712e27f8be4f83c757e77b60b01a7744624
Formbook
a5d81b3d4d0df91d286ae0f3db7d166ecd013e8c53d1677be5b149edb9d15d42
Formbook
ac3f3b427e4a53df34b871e557fe29f46c9a49dac5d10fe488a23daa78f99c4c
Formbook
d99947df7b80d4cf1f998cd4c205df67be0afc6ab0d9b4d92988b1aeccc1bf0c
Formbook
+ 5'357 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  1/10
Tags:
n/a
Link:
https://tria.ge/reports/200716-jwtev1h1cn/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetThreadContext
Adds Run key to start application
Loads dropped DLL
Executes dropped EXE
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:Formbook
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect Formbook in memory
Reference:internal research
Rule name:win_formbook_auto
Create hunting rule
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/26840/

Comments