MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 12898cbec097104c225702c61e311cc6e12d0f4ac55b95a1eb41a812e6941748. 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: 11


Intelligence 11 IOCs YARA 1 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 12898cbec097104c225702c61e311cc6e12d0f4ac55b95a1eb41a812e6941748
SHA3-384 hash: 1fe197806a886284eced78808254ae684b4847758d69aac2e8772125d94742bed9cda6d9b64a7667255f61acfc822465
SHA1 hash: 38d03e28aac1eb2682847bef72b4d09ac656700c
MD5 hash: 150b9ad62d86751e83d50a1dd0cd337c
humanhash: ohio-fillet-cat-eleven
File name:cmr and invoice.scr
Download: download sample
Signature Formbook
Create hunting rule
File size:908'800 bytes
First seen:2020-10-20 08:33:12 UTC
Last seen:2020-10-25 21:49:03 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'661 x AgentTesla, 19'474 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 24576:l9L9WktdQc2VxZWdMI51ErUnRYQGlqPGacj3eNd:ltdQc2VDWdMI5im5eqPs7eN
Threatray 2'557 similar samples on MalwareBazaar
TLSH 2315CF0812B88655ED7F4779D5B4410CD3FDA833B16ADB8E8A6C20EE1F6B750ED052A3
Reporter abuse_ch
Tags:FormBook scr


Avatar
abuse_ch
Malspam distributing unidentified malware:

HELO: backfall.from.sh
Sending IP: 141.8.192.167
From: AlfaKar Pleven <alfakar112@abv.bg>
Reply-To: aladdinq2011@gmail.com
Subject: cmr+inv
Attachment: cmr and invoice.img (contains "cmr and invoice.scr")

Intelligence

File Origin
# of uploads :
2
# of downloads :
80
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/73355/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Sending a UDP request
Creating a window
Launching a process
Running batch commands
Creating a process with a hidden window
Creating a file
Launching cmd.exe command interpreter
Setting browser functions hooks
Unauthorized injection to a system process
Unauthorized injection to a browser process
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/497325
Signature
Icon mismatch, binary includes an icon from a different legit application in order to fool users
Initial sample is a PE file and has a suspicious name
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)
Multi AV Scanner detection for submitted file
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 virtualization through RDTSC time measurements
Uses ipconfig to lookup or modify the Windows network settings
Uses netstat to query active network connections and open ports
Writes to foreign memory regions
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 300852 Sample: cmr and invoice.scr Startdate: 20/10/2020 Architecture: WINDOWS Score: 100 57 Malicious sample detected (through community Yara rule) 2->57 59 Icon mismatch, binary includes an icon from a different legit application in order to fool users 2->59 61 Multi AV Scanner detection for submitted file 2->61 63 5 other signatures 2->63 10 cmr and invoice.exe 1 2->10         started        process3 signatures4 73 Writes to foreign memory regions 10->73 75 Maps a DLL or memory area into another process 10->75 13 vbc.exe 10->13         started        16 cmr and invoice.exe 1 10->16         started        18 cmd.exe 1 10->18         started        process5 signatures6 77 Modifies the context of a thread in another process (thread injection) 13->77 79 Maps a DLL or memory area into another process 13->79 81 Sample uses process hollowing technique 13->81 83 2 other signatures 13->83 20 explorer.exe 13->20 injected 24 vbc.exe 16->24         started        26 cmd.exe 1 16->26         started        28 conhost.exe 18->28         started        30 choice.exe 1 18->30         started        process7 dnsIp8 45 www.crifinmarket.com 46.28.105.2, 49749, 80 WEDOSCZ Czech Republic 20->45 47 www.valentinakasu.com 217.160.0.124, 49747, 80 ONEANDONE-ASBrauerstrasse48DE Germany 20->47 49 3 other IPs or domains 20->49 65 System process connects to network (likely due to code injection or exploit) 20->65 32 NETSTAT.EXE 20->32         started        35 ipconfig.exe 20->35         started        67 Modifies the context of a thread in another process (thread injection) 24->67 69 Maps a DLL or memory area into another process 24->69 71 Sample uses process hollowing technique 24->71 37 conhost.exe 26->37         started        39 choice.exe 1 26->39         started        signatures9 process10 signatures11 51 Modifies the context of a thread in another process (thread injection) 32->51 53 Maps a DLL or memory area into another process 32->53 55 Tries to detect virtualization through RDTSC time measurements 32->55 41 cmd.exe 1 32->41         started        process12 process13 43 conhost.exe 41->43         started       
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/12898cbec097104c225702c61e311cc6e12d0f4ac55b95a1eb41a812e6941748/
Threat name:
Win32.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2020-10-20 03:03:03 UTC
AV detection:
21 of 28 (75.00%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=ckeyzpwas4ieyisxaldb4mi4y3qs2d2kyvnzlipligubfzuuc5ea._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
21ac6b3466ff131a75cea134baddd37412fa73bb5b8697aad76a719346a14648
Formbook
27c9bdfa6cc8c9343b507ee1df148482028afcabda152e356feabd28ecd67eb5
Formbook
2f96167c307b2b82ca3ed1b6b6368b607cb075e178aef0ea4ff7bd4c203e7d6b
Formbook
41460fb3f977f3130a43b79af43befae6f7ba72270f20d4f928fd35bdd28ec0b
Formbook
5eb9ca5476eb4c9c83bbb5d6bbb7ff90474749121e2e063bbd9e988c4e4917e2
Formbook
7d7edb74ec4a4b30b75d0337169be83d230a384ba2bb9597c626aaeadbef8048
Formbook
a5101910da7817c72ebc45da2ee45900f306a86edc039c9072f6c1e890da6628
Formbook
a9ee569395b89fd6a4a129896d38f1ed68fb6b512bbd54cdf570ec4f2ea70497
Formbook
b9225c079305112fcd1d5be698796eb426a668779daff06b99986266c161ab52
Formbook
ece024ccd4accbc99e106f03c4b4764765b37615e3caa0b021084ac5f689cc3e
Formbook
+ 2'547 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
rat trojan spyware stealer family:formbook
Link:
https://tria.ge/reports/201020-dgjqrzrwv6/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Uses the VBS compiler for execution
Formbook Payload
Formbook
Unpacked files
SH256 hash:
12898cbec097104c225702c61e311cc6e12d0f4ac55b95a1eb41a812e6941748
MD5 hash:
150b9ad62d86751e83d50a1dd0cd337c
SHA1 hash:
38d03e28aac1eb2682847bef72b4d09ac656700c
Link:
https://www.unpac.me/results/bd27d615-e4a2-4acf-90dd-c1cf863f437a/
SH256 hash:
ff6cbb2b11aee4cba8084f9b679a64d3daec8b4bd2b4956847099b20f8719468
MD5 hash:
0c4da8f54976caadd5ac1cf130376bff
SHA1 hash:
19afc7746aa10210d4e260fd1dc0d28d4b16f28a
Link:
https://www.unpac.me/results/bd27d615-e4a2-4acf-90dd-c1cf863f437a/
SH256 hash:
b087a4c845235d514eb24a87f9af3c3f4171050906450d2d185e056caa4ba0f6
MD5 hash:
63ba6b8c7406b7c5af6526977517a7bf
SHA1 hash:
704e4e782aa010d23342b5bff350024a355c88d4
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/bd27d615-e4a2-4acf-90dd-c1cf863f437a/
Parent samples :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 note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Formbook
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/12898cbec097104c225702c61e311cc6e12d0f4ac55b95a1eb41a812e6941748

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

img 939f6cd4aece451ff56f7f7b90008c58b38bf1e1de5997b0da8190688df726e5

Formbook

Executable exe 12898cbec097104c225702c61e311cc6e12d0f4ac55b95a1eb41a812e6941748

(this sample)

  
Dropped by
MD5 c536fae734aafd576ec2189deadd3319
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/73355/
  
Dropped by
SHA256 939f6cd4aece451ff56f7f7b90008c58b38bf1e1de5997b0da8190688df726e5

Comments