MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 2a6f4ceccb614247724bff7ecc0241c756b3d0d971734ebf7d15d2c822975ff1. 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: 9


Intelligence 9 IOCs YARA File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 2a6f4ceccb614247724bff7ecc0241c756b3d0d971734ebf7d15d2c822975ff1
SHA3-384 hash: 36f9ecc314cccebcc8e7ec50982b4d4bb696e9b373fd2cea7cf3d749d8b455988969748307263608ffb4d46ef9cdae06
SHA1 hash: 090e0407aa4b3684699b2fb749796e3f2c5de188
MD5 hash: 708a1b01fec5b30cba9afffb119eb4f4
humanhash: florida-virginia-carbon-jersey
File name:DOC99281270.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:488'448 bytes
First seen:2020-08-17 07:03:30 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'649 x AgentTesla, 19'461 x Formbook, 12'202 x SnakeKeylogger)
ssdeep 12288:Kz4EcmZHAFaxmVmie9bngPJomGXNTUIpXtlOVe/GskEAX10Y/PGsA:a4EcmZHAFaxmVmie9bngPxqNZfLJSv
Threatray 2'240 similar samples on MalwareBazaar
TLSH 31A47C5838C0E7EFE1E20EB94818982433D32F290115E90B9C7B3AD927F57D16E9A55F
Reporter abuse_ch
Tags:exe FormBook


Avatar
abuse_ch
Malspam distributing Formbook:

HELO: xv20.pinotvineryms.gq
Sending IP: 161.35.92.129
From: Suya Wang <sales@pinotvineryms.gq>
Reply-To: Suya Wang <eterecomo@eternalexposure.com.my>
Subject: RE: Request for Quotation
Attachment: PURCHASE_ORDER_010333.xlsx

Formbook payload URL:
http://saidagruop.jp/DOC99281270.exe

Formbook C2:
http://www.flekcht.com/crb/

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/46742/
Detection(s):
Win.Malware.Autoit-8998052-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
Unauthorized injection to a recently created process
Creating a file
Launching a process
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/432737
Signature
Benign windows process drops PE files
Detected FormBook malware
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
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)
Yara detected AntiVM_3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 268681 Sample: DOC99281270.exe Startdate: 17/08/2020 Architecture: WINDOWS Score: 100 57 Malicious sample detected (through community Yara rule) 2->57 59 Yara detected AntiVM_3 2->59 61 Yara detected FormBook 2->61 63 5 other signatures 2->63 10 DOC99281270.exe 3 2->10         started        process3 file4 49 C:\Users\user\AppData\...\DOC99281270.exe.log, ASCII 10->49 dropped 87 Tries to detect virtualization through RDTSC time measurements 10->87 89 Injects a PE file into a foreign processes 10->89 14 DOC99281270.exe 10->14         started        signatures5 process6 signatures7 91 Modifies the context of a thread in another process (thread injection) 14->91 93 Maps a DLL or memory area into another process 14->93 95 Sample uses process hollowing technique 14->95 97 Queues an APC in another process (thread injection) 14->97 17 explorer.exe 4 6 14->17 injected process8 dnsIp9 51 www.flekcht.com 192.64.116.112, 49751, 80 NAMECHEAP-NETUS United States 17->51 53 www.thatsigns.com 17->53 55 www.creativeraft.com 17->55 43 C:\Users\user\AppData\Local\...\ut404t5jg.exe, PE32 17->43 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 cmd.exe 1 17 17->22         started        26 ut404t5jg.exe 3 17->26         started        28 ut404t5jg.exe 2 17->28         started        30 2 other processes 17->30 file10 signatures11 process12 file13 45 C:\Users\user\AppData\...\0L-logrv.ini, data 22->45 dropped 47 C:\Users\user\AppData\...\0L-logri.ini, data 22->47 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 85 2 other signatures 22->85 32 cmd.exe 1 22->32         started        81 Injects a PE file into a foreign processes 26->81 34 ut404t5jg.exe 26->34         started        37 ut404t5jg.exe 26->37         started        39 ut404t5jg.exe 28->39         started        83 Tries to detect virtualization through RDTSC time measurements 30->83 signatures14 process15 signatures16 41 conhost.exe 32->41         started        65 Modifies the context of a thread in another process (thread injection) 34->65 67 Maps a DLL or memory area into another process 34->67 69 Sample uses process hollowing technique 34->69 process17
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/2a6f4ceccb614247724bff7ecc0241c756b3d0d971734ebf7d15d2c822975ff1/
Threat name:
ByteCode-MSIL.Trojan.Kryptik
Create hunting rule
Status:
Malicious
First seen:
2020-08-17 07:05:05 UTC
AV detection:
23 of 29 (79.31%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=fjxuz3glmfbeo4sl757myasby5llhugzofzu5p35cxjmqiuxl7yq._file
Verdict:
malicious
Similar samples:
035c2fa5d912202dd34e8410b14a42b0db007c2be8ed819bbc444f9818497f5b
Formbook
474cad642b1cf88f8d7f922cbfd9b8a00d7fc0eb40cafc0877007ee2884f105f
Formbook
52e01cac4f5319a7d1177aae77861b4ad8f77b26581d089e948344d0e608b80b
Formbook
5e5d88343393a5a1f98a66c8e5967023e200dcf3be81bc0a3c210396156d0fea
Formbook
6f827b68129d30609057c2e6b36be05649fce91d6bc8ee3d3566ca5c6aba562b
Formbook
79f15bc55fcc0e2f863a81accfb76b601531a909ebf009d57176dd18edf46d7d
Formbook
9099123ab27c467c09e2483339756820e29e6d8cd3d0346305d3873902e4af65
Formbook
9bf2e6afa0656c8129746c95784146ba85f15ecf46081644192e5bbfd5899144
Formbook
aac570b4af97093e3d10f81c8754d3523b4d76fd894333a8e20deb33a4247ab5
Formbook
e6de9e86b470184110650c77b487796a8fb27d67a60b9e0ca7a113df7eefdde6
Formbook
+ 2'230 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
rat spyware trojan stealer family:formbook persistence
Link:
https://tria.ge/reports/200817-1sqj67m2d2/
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
System policy modification
Drops file in Program Files directory
Suspicious use of SetThreadContext
Deletes itself
Reads user/profile data of web browsers
Adds policy Run key to start application
Formbook Payload
Formbook
Malware Config
C2 Extraction:
http://www.flekcht.com/crb/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Trojan
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/2a6f4ceccb614247724bff7ecc0241c756b3d0d971734ebf7d15d2c822975ff1

File information

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

Malspam

Formbook

Excel file xlsx 5ab40f12765a612b39c842e214dc877217074c83d7c2a4114380da8fe6a7d83c

Formbook

Executable exe 2a6f4ceccb614247724bff7ecc0241c756b3d0d971734ebf7d15d2c822975ff1

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/422540/
  
Dropped by
MD5 ea34109c78fad3492b6c181e9e442304
  
Dropped by
SHA256 5ab40f12765a612b39c842e214dc877217074c83d7c2a4114380da8fe6a7d83c
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/46742/

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