MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 08fa0f706fc396cd5015d07862705016732e3d6e6f3e3178c165a1cd94e1d0a1. 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 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 08fa0f706fc396cd5015d07862705016732e3d6e6f3e3178c165a1cd94e1d0a1
SHA3-384 hash: 78427cd2d6b5193470108d2ff8827ff27a1df6f5bad3b31254361bf98183ca34ae59a62bca43345f27975cdfa991f309
SHA1 hash: f631534b88570c8e5938132587953daf0b57c127
MD5 hash: 0852c0e2255aae1522e6aabba53a5702
humanhash: lion-river-black-social
File name:0852c0e2255aae1522e6aabba53a5702.rtf
Download: download sample
Signature Formbook
Create hunting rule
File size:10'366 bytes
First seen:2020-11-25 07:18:30 UTC
Last seen:Never
File type:Rich Text Format (RTF) rtf
MIME type:text/rtf
ssdeep 192:5jI8HeUrXiykYxH8bM32KW8D2ws20+BihtU++YPWtf1SZp:GU1rXiykYxH8bk2q2wskc0Tu
TLSH D7226D44FCEAD4651B8A8890032A757900277CBEC6E3AE643E4D7ABA2793B4547B704C
Reporter abuse_ch
Tags:CVE-2017-11882 FormBook rtf

Office OLE Information

This malware samples appears to be an Office document. The following table provides more information about this document using oletools and oledump.

OLE dump

Intelligence

File Origin
# of uploads :
1
# of downloads :
167
Origin country :
n/a
Vendor Threat Intelligence
Result
Verdict:
Malware
Maliciousness:

Behaviour
Launching a process
Creating a window
Creating a file
Launching cmd.exe command interpreter
Deleting a system file
Sending an HTTP GET request
Launching a file downloaded from the Internet
Forced shutdown of a system process
Creating a process from a recently created file
Unauthorized injection to a system process
Result
Verdict:
MALICIOUS
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/546682
Signature
Allocates memory in foreign processes
Drops PE files to the user root directory
Injects a PE file into a foreign processes
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 dropped file
Multi AV Scanner detection for submitted file
Office equation editor drops PE file
Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802)
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Sigma detected: Droppers Exploiting CVE-2017-11882
Sigma detected: EQNEDT32.EXE connecting to internet
Sigma detected: Executables Started in Suspicious Folder
Sigma detected: Execution in Non-Executable Folder
Sigma detected: File Dropped By EQNEDT32EXE
Sigma detected: Suspicious Program Location Process Starts
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
Writes to foreign memory regions
Yara detected AntiVM_3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 322435 Sample: Sgyq1ebjMJ.rtf Startdate: 25/11/2020 Architecture: WINDOWS Score: 100 42 Malicious sample detected (through community Yara rule) 2->42 44 Multi AV Scanner detection for dropped file 2->44 46 Multi AV Scanner detection for submitted file 2->46 48 12 other signatures 2->48 9 EQNEDT32.EXE 11 2->9         started        14 WINWORD.EXE 336 18 2->14         started        16 EQNEDT32.EXE 2->16         started        process3 dnsIp4 36 103.207.38.170, 49165, 80 VNPT-AS-VNVNPTCorpVN Viet Nam 9->36 32 C:\Users\user\AppData\Local\...\coo[1].exe, PE32 9->32 dropped 34 C:\Users\Public\vbc.exe, PE32 9->34 dropped 74 Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802) 9->74 18 vbc.exe 9->18         started        file5 signatures6 process7 signatures8 50 Multi AV Scanner detection for dropped file 18->50 52 Writes to foreign memory regions 18->52 54 Allocates memory in foreign processes 18->54 56 Injects a PE file into a foreign processes 18->56 21 RegSvcs.exe 18->21         started        process9 signatures10 58 Modifies the context of a thread in another process (thread injection) 21->58 60 Maps a DLL or memory area into another process 21->60 62 Sample uses process hollowing technique 21->62 64 2 other signatures 21->64 24 raserver.exe 21->24         started        27 explorer.exe 21->27 injected process11 dnsIp12 66 Modifies the context of a thread in another process (thread injection) 24->66 68 Maps a DLL or memory area into another process 24->68 70 Tries to detect virtualization through RDTSC time measurements 24->70 30 cmd.exe 24->30         started        38 www.myvirtualmision.com 199.59.242.153, 49166, 80 BODIS-NJUS United States 27->38 40 www.oghomeinfoa6.club 27->40 72 System process connects to network (likely due to code injection or exploit) 27->72 signatures13 process14
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/08fa0f706fc396cd5015d07862705016732e3d6e6f3e3178c165a1cd94e1d0a1/
Threat name:
Document-Office.Exploit.CVE-2017-11882
Create hunting rule
Status:
Malicious
First seen:
2020-11-24 12:27:49 UTC
AV detection:
16 of 29 (55.17%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=bd5a64dpyolm2uav2b4ge4cqczzs4plon47dc6gbmwq43fhb2cqq._file
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook rat spyware stealer trojan
Link:
https://tria.ge/reports/201125-h4sa34efce/
Behaviour
Suspicious use of WriteProcessMemory
Checks processor information in registry
Enumerates system info in registry
Launches Equation Editor
Modifies Internet Explorer settings
Suspicious behavior: AddClipboardFormatListener
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Office loads VBA resources, possible macro or embedded object present
Drops file in Windows directory
Suspicious use of SetThreadContext
Loads dropped DLL
Uses the VBS compiler for execution
Blacklisted process makes network request
Executes dropped EXE
Formbook Payload
Formbook
Malware Config
C2 Extraction:
http://www.digitalcashteam.com/glt/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Bloodhound
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/08fa0f706fc396cd5015d07862705016732e3d6e6f3e3178c165a1cd94e1d0a1

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:Email_stealer_bin_mem
Create hunting rule
Author:James_inthe_box
Description:Email in files like avemaria
Rule name:IPPort_combo_mem
Create hunting rule
Author:James_inthe_box
Description:IP and port combo
Rule name:Select_from_enumeration
Create hunting rule
Author:James_inthe_box
Description:IP and port combo
Rule name:SharedStrings
Create hunting rule
Author:Katie Kleemola
Description:Internal names found in LURK0/CCTV0 samples
Rule name:UAC_bypass_bin_mem
Create hunting rule
Author:James_inthe_box
Description:UAC bypass in files like avemaria

File information

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

Web download

Formbook

Rich Text Format (RTF) rtf 08fa0f706fc396cd5015d07862705016732e3d6e6f3e3178c165a1cd94e1d0a1

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/836543/
  
Delivery method
Distributed via web download

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