MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 970aa1ea39079684830789ad8c5c9cbf9777b65fdb44130aa8bbe4b88245e6fc. 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 7 File information Comments
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SHA256 hash: 970aa1ea39079684830789ad8c5c9cbf9777b65fdb44130aa8bbe4b88245e6fc
SHA3-384 hash: f525185754857adf43f71570da1e873592659fd1535d6cc1dcffbde8f2a3cb9beff5200deb0f84f4cb34cc0461d1afc3
SHA1 hash: 276874cf73eea9c561525b4f45e23acb84a59e33
MD5 hash: f4230f83573dbf097b3219588cd656f2
humanhash: wyoming-georgia-mobile-montana
File name:SecuriteInfo.com.Exploit.Rtf.Obfuscated.16.18733.11009
Download: download sample
Signature Formbook
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File size:1'892'063 bytes
First seen:2021-01-11 16:43:56 UTC
Last seen:2021-02-17 22:35:15 UTC
File type:Rich Text Format (RTF) rtf
MIME type:text/rtf
ssdeep 384:fD1P4dWtyyPztnlyb4dWty7JyyA2dWty+sdWhdWuArdW5dWGhzlGK1/w6vz2p3JR:faixS29i6rmYXzph72+bNcQX
TLSH C6950B852A796202E9DA37D5FEFB3B46F22F3029A6C11050C959DCF95C63D88D606CCB
Reporter SecuriteInfoCom
Tags:CVE-2017-8570 FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
192
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
970aa1ea39079684830789ad8c5c9cbf9777b65fdb44130aa8bbe4b88245e6fc
Verdict:
Malicious activity
Analysis date:
2021-01-11 12:38:18 UTC
Tags:
exploit CVE-2017-11882
Link:
https://app.any.run/tasks/beea8711-8b99-416d-b7dc-469c04606fe3

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Malicious
File type:
application/rtf
Has a screenshot:
False
Contains macros:
False
Detection(s):
SecuriteInfo.com.Exploit.Rtf.Obfuscated.16.18733.11009.UNOFFICIAL
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Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file in the %temp% directory
Launching a process
Creating a window
Creating a process with a hidden window
Launching the default Windows debugger (dwwin.exe)
Using the Windows Management Instrumentation requests
DNS request
Sending a custom TCP request
Bypassing of proactive protection methods using Windows Management Instrumentation (WMI)
Running batch commands by exploiting the app vulnerability
Creating a process from a recently created file
Launching a process by exploiting the app vulnerability
Result
Verdict:
Malicious
File Type:
RTF File
Link:
https://app.docguard.net/970aa1ea39079684830789ad8c5c9cbf9777b65fdb44130aa8bbe4b88245e6fc/results/dashboard
Result
Verdict:
MALICIOUS
Result
Threat name:
FormBook
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Detection:
malicious
Classification:
troj.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/578160
Signature
Creates processes via WMI
Document exploit detected (creates forbidden files)
Found malware configuration
Found potential equation exploit (CVE-2017-11882)
Found suspicious RTF objects
Injects a PE file into a foreign processes
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
Microsoft Office drops suspicious files
Modifies the context of a thread in another process (thread injection)
Multi AV Scanner detection for submitted file
Obfuscated command line found
Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802)
Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines)
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Sigma detected: CMSTP Execution Process Creation
Sigma detected: Droppers Exploiting CVE-2017-11882
Sigma detected: Microsoft Office Product Spawning Windows Shell
Sigma detected: Office product drops script at suspicious location
Sigma detected: WScript or CScript Dropper
Tries to detect virtualization through RDTSC time measurements
Very long command line found
Writes to foreign memory regions
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 338133 Sample: SecuriteInfo.com.Exploit.Rt... Startdate: 11/01/2021 Architecture: WINDOWS Score: 100 37 Found malware configuration 2->37 39 Malicious sample detected (through community Yara rule) 2->39 41 Multi AV Scanner detection for submitted file 2->41 43 10 other signatures 2->43 9 powershell.exe 4 136 2->9         started        13 WINWORD.EXE 292 25 2->13         started        16 EQNEDT32.EXE 47 2->16         started        process3 dnsIp4 35 cdn.discordapp.com 162.159.133.233, 443, 49167 CLOUDFLARENETUS United States 9->35 55 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 9->55 57 Writes to foreign memory regions 9->57 59 Injects a PE file into a foreign processes 9->59 18 notepad.exe 9->18         started        33 C:\Users\user\AppData\Local\Temp\Client.vbs, ASCII 13->33 dropped 61 Document exploit detected (creates forbidden files) 13->61 63 Microsoft Office drops suspicious files 13->63 65 Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802) 16->65 21 cmd.exe 16->21         started        file5 signatures6 process7 signatures8 45 Modifies the context of a thread in another process (thread injection) 18->45 47 Maps a DLL or memory area into another process 18->47 49 Sample uses process hollowing technique 18->49 51 2 other signatures 18->51 23 explorer.exe 18->23 injected 25 cscript.exe 21->25         started        process9 signatures10 28 cmstp.exe 23->28         started        53 Creates processes via WMI 25->53 process11 signatures12 67 Tries to detect virtualization through RDTSC time measurements 28->67 31 cmd.exe 28->31         started        process13
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/970aa1ea39079684830789ad8c5c9cbf9777b65fdb44130aa8bbe4b88245e6fc/
Threat name:
Document-Office.Exploit.CVE-2017-8570
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Status:
Malicious
First seen:
2021-01-11 10:54:55 UTC
AV detection:
7 of 46 (15.22%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=s4fkd2rza6lijayhrgwyyxe4x6lxpns73ncbgcvixpslrasf436a._file
Result
Malware family:
formbook
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Score:
  10/10
Tags:
family:formbook rat spyware stealer trojan
Link:
https://tria.ge/reports/210111-aznttj1xl2/
Behaviour
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 FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Checks processor information in registry
NTFS ADS
Office loads VBA resources, possible macro or embedded object present
Drops file in Windows directory
Drops file in System32 directory
Suspicious use of SetThreadContext
Blocklisted process makes network request
Formbook Payload
Formbook
Process spawned unexpected child process
Malware Config
C2 Extraction:
http://www.familyof2.com/p3c/
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/970aa1ea39079684830789ad8c5c9cbf9777b65fdb44130aa8bbe4b88245e6fc

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
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Author:James_inthe_box
Description:Email in files like avemaria
Rule name:INDICATOR_RTF_EXPLOIT_CVE_2017_11882_4
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Author:ditekSHen
Description:detects RTF variant documents potentially exploiting CVE-2018-0802 or CVE-2017-11882
Rule name:IPPort_combo_mem
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Author:James_inthe_box
Description:IP and port combo
Rule name:MAL_RTF_Embedded_OLE_PE
Create hunting rule
Author:Florian Roth
Description:Detects a suspicious string often used in PE files in a hex encoded object stream
Reference:https://www.nextron-systems.com/2018/01/22/creating-yara-rules-detect-embedded-exe-files-ole-objects/
Rule name:Select_from_enumeration
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Author:James_inthe_box
Description:IP and port combo
Rule name:SharedStrings
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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.

Comments