MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 18b73eb77f7ab87787d413aa80258f45f7e70b93c2464166c459254e0a4d8a47. 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 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 18b73eb77f7ab87787d413aa80258f45f7e70b93c2464166c459254e0a4d8a47
SHA3-384 hash: e9d239ff11cd1157811c88a8437ff04fd78df1b810abc4ef7be4fc0d20b001055fb0ffae710501aa78a953fddd2c46c2
SHA1 hash: e240816dfa277da2b8e0a6df1300b6d7f21eecf8
MD5 hash: e43ef7c83cb4de0bbab81797fd71814f
humanhash: vermont-maryland-comet-london
File name:winlog.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:769'024 bytes
First seen:2020-08-13 08:49:53 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 0aa3dcbdd0727cba5785897870b1d0ce (14 x AgentTesla, 6 x Loki, 3 x Formbook)
ssdeep 12288:WkTCaGA3RukdYUSTkq31mZqB5ke5C5y3ptXqzFPT+A/jQtgs7hV4lT:F0CEU+DTk0lp58hi5GlT
Threatray 2'248 similar samples on MalwareBazaar
TLSH 0FF49D62B2E0483ED126153D9F3B5FE49C25BE512A2858462BF41C4F7F3928D393629F
Reporter abuse_ch
Tags:exe FormBook


Avatar
abuse_ch
Malspam distributing Formbook:

HELO: server.cma.com.my
Sending IP: 103.233.0.169
From: Orlando Yoon (Ho Seok Yoon) <orlandoyoon@evergreen-shipping.co.kr>
Subject: Documents for the Sea shipment(MATZ MAERSK / 017W , ETA:29/august)
Attachment: 20200068.xlsx

Formbook payload URL:
http://chinesewsdyhigncomeiscausedbythepan12msn.duckdns.org/chnsfrnd3/winlog.exe

Intelligence

File Origin
# of uploads :
1
# of downloads :
68
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/44981/
Detection(s):
PUA.Win.Adware.Slugin-6803969-0
Create hunting rule

PUA.Win.Adware.Slugin-6840354-0
Create hunting rule

SecuriteInfo.com.Mal.Generic-S.5549.16169.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Unauthorized injection to a recently created process
Sending a UDP request
Launching a process
Launching cmd.exe command interpreter
DNS request
Setting browser functions hooks
Forced shutdown of a system process
Unauthorized injection to a system process
Unauthorized injection to a browser process
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/425512
Signature
Benign windows process drops PE files
Contains functionality to detect sleep reduction / modifications
Detected FormBook malware
Detected unpacking (changes PE section rights)
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
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 virtualization through RDTSC time measurements
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file access)
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: 265316 Sample: winlog.exe Startdate: 14/08/2020 Architecture: WINDOWS Score: 100 53 www.michiganbusinesshub.com 2->53 63 Malicious sample detected (through community Yara rule) 2->63 65 Detected unpacking (changes PE section rights) 2->65 67 Yara detected FormBook 2->67 69 6 other signatures 2->69 11 winlog.exe 2->11         started        signatures3 process4 signatures5 87 Detected unpacking (changes PE section rights) 11->87 89 Maps a DLL or memory area into another process 11->89 91 Tries to detect virtualization through RDTSC time measurements 11->91 93 Contains functionality to detect sleep reduction / modifications 11->93 14 winlog.exe 11->14         started        process6 signatures7 95 Modifies the context of a thread in another process (thread injection) 14->95 97 Maps a DLL or memory area into another process 14->97 99 Sample uses process hollowing technique 14->99 101 Queues an APC in another process (thread injection) 14->101 17 explorer.exe 4 6 14->17 injected process8 dnsIp9 47 www.ksplaza.com 162.255.118.194, 49741, 49742, 49743 NAMECHEAP-NETUS United States 17->47 49 www.524qk.com 103.24.153.34, 49737, 80 HENGTONG-IDC-LLCUS Hong Kong 17->49 51 www.w8byr7.com 17->51 41 C:\Users\user\AppData\Local\...\dvsdbcr9l.exe, PE32 17->41 dropped 71 System process connects to network (likely due to code injection or exploit) 17->71 73 Benign windows process drops PE files 17->73 22 wscript.exe 1 17 17->22         started        26 dvsdbcr9l.exe 17->26         started        28 dvsdbcr9l.exe 17->28         started        30 2 other processes 17->30 file10 signatures11 process12 file13 43 C:\Users\user\AppData\...\053logrv.ini, data 22->43 dropped 45 C:\Users\user\AppData\...\053logri.ini, data 22->45 dropped 75 Detected FormBook malware 22->75 77 Tries to steal Mail credentials (via file access) 22->77 79 Tries to harvest and steal browser information (history, passwords, etc) 22->79 81 Modifies the context of a thread in another process (thread injection) 22->81 32 cmd.exe 1 22->32         started        83 Maps a DLL or memory area into another process 26->83 35 dvsdbcr9l.exe 26->35         started        37 dvsdbcr9l.exe 28->37         started        85 Tries to detect virtualization through RDTSC time measurements 30->85 signatures14 process15 signatures16 55 Tries to detect virtualization through RDTSC time measurements 32->55 39 conhost.exe 32->39         started        57 Modifies the context of a thread in another process (thread injection) 35->57 59 Maps a DLL or memory area into another process 35->59 61 Sample uses process hollowing technique 35->61 process17
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/18b73eb77f7ab87787d413aa80258f45f7e70b93c2464166c459254e0a4d8a47/
Threat name:
Win32.Backdoor.NanoCore
Create hunting rule
Status:
Malicious
First seen:
2020-08-13 03:55:26 UTC
AV detection:
27 of 29 (93.10%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=dc3t5n37pk4hpb6ucoviajmpix36oc4tyjdeczwelesu4csnrjdq._file
Verdict:
malicious
Label(s):
netwirerc
Create hunting rule
Similar samples:
0098bf2ef8230d9bb30b451868272ffb271fe63a8c248bfc9ce569991c19f279
Formbook
08b47c6d183afb72f383ced4639ba73a03d9b36f06617585b3a3d28b69d1ce9f
Formbook
51f4e86285f8cb8a14a0d456beed9f15882e4ec7813bc24ff4c20a2389d1ccd0
Formbook
52f217cdebe83217297bedc352fac2e475e293e6cad52a1335b3641eeb8c412b
Formbook
783c6835be34af1803983890ec14e1edb2ac7cef4442dff43cddb719d97236b2
Formbook
8606768cb758ba8379659f65220250ebc1c491dabd668e7f98663571419cadf2
Formbook
99ae2d3c813970e279188fa1fce92e70ac2ba63c03d2d04fd6f719d4953169c3
Formbook
a2a9054cc0ce0c7c53a7fbf11b1ea81e80a3e4d6ccff09e731281807c17791fc
Formbook
b9cd83c667b694ec10f884183b138beeb0f986a7d3c50af463535852f2fa0663
Formbook
e6d371badc121f232f4305f3a50f0a136d1b7edbc3337414ca692c26ae41986c
Formbook
+ 2'238 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
rat persistence spyware trojan stealer family:formbook
Link:
https://tria.ge/reports/200813-r2xx68ar4j/
Behaviour
Modifies Internet Explorer settings
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Drops file in Program Files directory
Suspicious use of SetThreadContext
Adds Run key to start application
Deletes itself
Reads user/profile data of web browsers
Formbook Payload
Formbook
Malware Config
C2 Extraction:
http://www.porcber.com/jjk/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Lokibot
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/18b73eb77f7ab87787d413aa80258f45f7e70b93c2464166c459254e0a4d8a47

File information

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

Malspam

Formbook

Excel file xlsx 70563c359ff2403e24c46c6273c6c2284fb4f03ee27ccac72790fb45cac82b53

Formbook

Executable exe 18b73eb77f7ab87787d413aa80258f45f7e70b93c2464166c459254e0a4d8a47

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/431694/
  
Dropped by
MD5 4be24de8af52fdeb819b9e99cf172ce9
  
Dropped by
SHA256 70563c359ff2403e24c46c6273c6c2284fb4f03ee27ccac72790fb45cac82b53
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/44981/

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