MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 8b6a946bbba908d8087fa23d3eb420ade3d88ea8c36023a97e6b9129c6453988. 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 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 8b6a946bbba908d8087fa23d3eb420ade3d88ea8c36023a97e6b9129c6453988
SHA3-384 hash: 722ff4313613d4c7ca68c415f4c59740e7364b79923d2ede3e23f66784823f6b26c9b2b6309e32c71440f37dbff2da5b
SHA1 hash: f2d79308075ee28bbe10f050179d26ca90bd9c13
MD5 hash: 294546cc1917e5cd4825ea349620468c
humanhash: tennis-violet-don-november
File name:Purchase Order.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:405'504 bytes
First seen:2020-08-05 06:35:14 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 6144:hBCcWYvTvZ+b1+khkXVQGA5mM1c2v2moRG8KundSoS/VSxNpEhZOnjGrzdF:hf7xo+KBhR2ZfdM/ALEZ/
Threatray 5'305 similar samples on MalwareBazaar
TLSH 5D84126C1868856BF63A0B3F8CB445039F6BD15F7101D29F4BB820A9B9BD25C7C16F62
Reporter abuse_ch
Tags:exe FormBook


Avatar
abuse_ch
Malspam distributing unidentified malware:

HELO: noblehk.com
Sending IP: 103.99.1.145
From: kumar@noblehk.com
Subject: Re: Purchase Order
Attachment: Purchase Order.rar (contains "Purchase Order.exe")

Intelligence

File Origin
# of uploads :
1
# of downloads :
68
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/38962/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
Launching a process
Creating a file
Launching cmd.exe command interpreter
Setting browser functions hooks
Unauthorized injection to a system process
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/410178
Signature
Benign windows process drops PE files
Detected FormBook malware
Executable has a suspicious name (potential lure to open the executable)
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
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)
Modifies the prolog of user mode functions (user mode inline hooks)
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
System process connects to network (likely due to code injection or exploit)
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to detect virtualization through RDTSC time measurements
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file access)
Writes to foreign memory regions
Yara detected AntiVM_3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 257332 Sample: Purchase Order.exe Startdate: 05/08/2020 Architecture: WINDOWS Score: 100 47 www.strikermillion.net 2->47 55 Malicious sample detected (through community Yara rule) 2->55 57 Yara detected AntiVM_3 2->57 59 Yara detected FormBook 2->59 61 5 other signatures 2->61 11 Purchase Order.exe 3 2->11         started        signatures3 process4 file5 45 C:\Users\user\...\Purchase Order.exe.log, ASCII 11->45 dropped 75 Writes to foreign memory regions 11->75 77 Injects a PE file into a foreign processes 11->77 15 RegSvcs.exe 11->15         started        signatures6 process7 signatures8 79 Modifies the context of a thread in another process (thread injection) 15->79 81 Maps a DLL or memory area into another process 15->81 83 Sample uses process hollowing technique 15->83 85 2 other signatures 15->85 18 explorer.exe 3 6 15->18 injected process9 dnsIp10 49 www.iskovlay.com 63.250.41.146, 49746, 80 NAMECHEAP-NETUS United States 18->49 51 www.xbjxs.com 18->51 53 www.ehoulby.com 18->53 39 C:\Users\user\AppData\...\services9rl8.exe, PE32 18->39 dropped 63 System process connects to network (likely due to code injection or exploit) 18->63 65 Benign windows process drops PE files 18->65 23 rundll32.exe 1 17 18->23         started        27 services9rl8.exe 2 18->27         started        29 services9rl8.exe 1 18->29         started        file11 signatures12 process13 file14 41 C:\Users\user\AppData\...41K4logrv.ini, data 23->41 dropped 43 C:\Users\user\AppData\...43K4logri.ini, data 23->43 dropped 67 Detected FormBook malware 23->67 69 Tries to steal Mail credentials (via file access) 23->69 71 Tries to harvest and steal browser information (history, passwords, etc) 23->71 73 3 other signatures 23->73 31 cmd.exe 1 23->31         started        33 conhost.exe 27->33         started        35 conhost.exe 29->35         started        signatures15 process16 process17 37 conhost.exe 31->37         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/8b6a946bbba908d8087fa23d3eb420ade3d88ea8c36023a97e6b9129c6453988/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2020-08-05 01:16:55 UTC
AV detection:
23 of 29 (79.31%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=rnvji253veenqcd7ui6t5nbavxr5rdviynqchkl6noistrsfhgea._file
Verdict:
malicious
Similar samples:
0c6ef50f134bbd723eddc99d8f9fc78b37e7e2590ec907ce4209075677add6d9
Formbook
1f6cc75fd60ebf9094d1e446292692518dae884f795b5db70b879e0fb942074b
Formbook
59b3d10d21cabf7b65afd5c425a6c0be1778646a1e5e1411875e8c52e38410b8
Formbook
703ff50ce5c0478d29687466ee83df7f4d7f302343039cba3bab46405e07433b
Formbook
9bbebb59b74b06b6d1db59d4d33f0baa4a6d44ec18b51b4ec11b9ae210e8bff8
Formbook
b6e89905d6d6238171dd9b2fe24dada39d4ca0f9e7634229e5c43b5f3b563dc5
Formbook
b92daf26444f20dda1b9473af9b4016f67fc4e87761b1429021aceba77e3dd5a
Formbook
bb2f11cf6a69920db299f01b3f971aacd7277f0d37884deff05cba52e59b2998
Formbook
dcdd457e51bde64c24cf118ac54c8489efbc4bc55b5f1afc4facdfe673d3543e
Formbook
e2ff7c5e749d36ebfcc2a9d5af487369e454ef301a859eb8fc11ebe15ea73e34
Formbook
+ 5'295 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
rat evasion trojan persistence spyware stealer family:formbook
Link:
https://tria.ge/reports/200805-67k5jb6fna/
Behaviour
Modifies Internet Explorer settings
Suspicious use of AdjustPrivilegeToken
Suspicious behavior: MapViewOfSection
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Suspicious behavior: EnumeratesProcesses
Drops file in Program Files directory
Suspicious use of SetThreadContext
Adds Run key to start application
Checks whether UAC is enabled
Reads user/profile data of web browsers
Formbook Payload
Formbook
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Kryptik
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/8b6a946bbba908d8087fa23d3eb420ade3d88ea8c36023a97e6b9129c6453988

File information

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

Malspam

Formbook

rar 6f445adccc490d3cdeeef1d59704d39de905c5ee093974881e5fe704d69116ec

Formbook

Executable exe 8b6a946bbba908d8087fa23d3eb420ade3d88ea8c36023a97e6b9129c6453988

(this sample)

  
Dropped by
MD5 253a4772bbd03d0d677f2a69dc5c72c6
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/38962/
  
Dropped by
SHA256 6f445adccc490d3cdeeef1d59704d39de905c5ee093974881e5fe704d69116ec

Comments