MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 29894cfea1f1f742f90e595a4b0e19b3de66d14eef3209331d653b5f49da8c62. 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: 15


Intelligence 15 IOCs YARA 1 File information Comments 1
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 29894cfea1f1f742f90e595a4b0e19b3de66d14eef3209331d653b5f49da8c62
SHA3-384 hash: f99a9e7cf661ff40556df8508f15a13c1d29b94df25e7118d469e92f1cfd3402bc9cf38116d0be088e22a9b3cb3710bf
SHA1 hash: 4ec1eb316c8fbe5e71ab162ef86ed5e9929e3750
MD5 hash: e5102c5df398cf5130a0367e6b2a37c3
humanhash: winter-bulldog-saturn-idaho
File name:e5102c5df398cf5130a0367e6b2a37c3
Download: download sample
Signature Formbook
Create hunting rule
File size:121'337 bytes
First seen:2024-07-18 04:48:25 UTC
Last seen:2024-07-18 05:16:12 UTC
File type:Rich Text Format (RTF) rtf
MIME type:text/rtf
ssdeep 768:SDV61L/qqaWG5HBAgBvcmqAbUllxvsI98IOUueeBxH:OYLiqaWG5vZcmXg0I98IOUueQV
TLSH T11DC3E199D78F41A5CF44A277031B8A494AFCB33EF24545A078AC937437ED83D45AA8BC
Reporter zbetcheckin
Tags:CVE-2017-11882 FormBook rtf

Intelligence

File Origin
# of uploads :
2
# of downloads :
128
Origin country :
FR FR
Vendor Threat Intelligence
Verdict:
Legit
File type:
application/rtf
Has a screenshot:
False
Contains macros:
False
Detection(s):
Sanesecurity.Malware.29030.RtfHeur.UNOFFICIAL
Create hunting rule

Sanesecurity.Shelter.Malware.BadRtf.ObjUpd.UNOFFICIAL
Create hunting rule

MiscreantPunch.RTF.2017-0199.Obfus.171711.UNOFFICIAL
Create hunting rule

TwinWave.EvilRTF.ObfusRunAway.20240409.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
92.5%
Link:
https://cyber-fortress.com/docs/result/index.php?id=66989ebf936dc865ddc76c89
Tags:
Exploit Generic Office
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Searching for synchronization primitives
Launching a process
Using the Windows Management Instrumentation requests
Creating a window
Sending an HTTP GET request to an infection source by exploiting the app vulnerability
Creating a file in the %AppData% directory
Сreating synchronization primitives
DNS request
Connection attempt
Sending a custom TCP request
Creating a process with a hidden window
Launching a service
Sending an HTTP GET request
Connection attempt to an infection source by exploiting the app vulnerability
Creating a process from a recently created file
Result
Verdict:
Malicious
File Type:
RTF File
Link:
https://app.docguard.net/29894cfea1f1f742f90e595a4b0e19b3de66d14eef3209331d653b5f49da8c62/results/dashboard
Behaviour
BlacklistAPI detected
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Link:
https://www.filescan.io/uploads/66989ebfa537d9330bdf29e8/reports/37789992-6ca1-491e-bd0c-a9e2c3fa607c/overview
Verdict:
Malicious
Labled as:
CVE-2017-11882
Link:
https://www.hybrid-analysis.com/sample/29894cfea1f1f742f90e595a4b0e19b3de66d14eef3209331d653b5f49da8c62
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/1475637
Signature
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Document exploit detected (process start blacklist hit)
Found direct / indirect Syscall (likely to bypass EDR)
Found malware configuration
Found potential equation exploit (CVE-2017-11882)
Injects a PE file into a foreign processes
Installs new ROOT certificates
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 domain / URL
Multi AV Scanner detection for submitted file
Obfuscated command line found
Office drops RTF file
Office equation editor establishes network connection
Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802)
Performs DNS queries to domains with low reputation
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Sigma detected: Base64 Encoded PowerShell Command Detected
Sigma detected: EQNEDT32.EXE connecting to internet
Sigma detected: Equation Editor Network Connection
Sigma detected: File Dropped By EQNEDT32EXE
Sigma detected: HackTool - CrackMapExec PowerShell Obfuscation
Sigma detected: Potential PowerShell Command Line Obfuscation
Sigma detected: PowerShell Base64 Encoded FromBase64String Cmdlet
Sigma detected: Script Initiated Connection to Non-Local Network
Sigma detected: Suspicious Microsoft Office Child Process
Sigma detected: WScript or CScript Dropper
Snort IDS alert for network traffic
Suspicious execution chain found
Suspicious powershell command line found
Switches to a custom stack to bypass stack traces
System process connects to network (likely due to code injection or exploit)
Tries to detect virtualization through RDTSC time measurements
Very long command line found
Windows Scripting host queries suspicious COM object (likely to drop second stage)
Writes to foreign memory regions
Wscript starts Powershell (via cmd or directly)
Yara detected FormBook
Yara detected Powershell download and execute
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1475637 Sample: 42ZjBoAnX1.rtf Startdate: 18/07/2024 Architecture: WINDOWS Score: 100 59 www.00050680.xyz 2->59 61 00050680.xyz 2->61 77 Snort IDS alert for network traffic 2->77 79 Multi AV Scanner detection for domain / URL 2->79 81 Found malware configuration 2->81 85 23 other signatures 2->85 13 WINWORD.EXE 336 18 2->13         started        signatures3 83 Performs DNS queries to domains with low reputation 59->83 process4 file5 43 C:\Users\...\~WRD0000.tmp:Zone.Identifier, ASCII 13->43 dropped 45 C:\Users\user\Desktop\~WRD0000.tmp, Rich 13->45 dropped 47 C:\Users\user\Desktop\42ZjBoAnX1.rtf (copy), Rich 13->47 dropped 49 ~WRF{0680296D-314A...4-FC238E86FEB1}.tmp, Composite 13->49 dropped 16 EQNEDT32.EXE 12 13->16         started        process6 dnsIp7 51 103.161.133.121, 49161, 49164, 80 AARNET-AS-APAustralianAcademicandResearchNetworkAARNe unknown 16->51 41 clearpicneedflowersnadimagesforhair.vBS, Unicode 16->41 dropped 73 Office equation editor establishes network connection 16->73 75 Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802) 16->75 21 wscript.exe 11 16->21         started        file8 signatures9 process10 dnsIp11 63 pastecode.dev 21->63 65 pastecode.dev 172.66.43.27, 443, 49162 CLOUDFLARENETUS United States 21->65 95 System process connects to network (likely due to code injection or exploit) 21->95 97 Suspicious powershell command line found 21->97 99 Wscript starts Powershell (via cmd or directly) 21->99 101 5 other signatures 21->101 25 powershell.exe 12 5 21->25         started        signatures12 process13 dnsIp14 67 198.46.176.133, 49163, 80 AS-COLOCROSSINGUS United States 25->67 103 Writes to foreign memory regions 25->103 105 Suspicious execution chain found 25->105 107 Injects a PE file into a foreign processes 25->107 29 RegAsm.exe 25->29         started        signatures15 process16 signatures17 109 Modifies the context of a thread in another process (thread injection) 29->109 111 Maps a DLL or memory area into another process 29->111 113 Sample uses process hollowing technique 29->113 115 3 other signatures 29->115 32 explorer.exe 7 3 29->32 injected process18 dnsIp19 53 www.00050280.xyz 32->53 55 www.trevelloescapes.com 32->55 57 16 other IPs or domains 32->57 69 System process connects to network (likely due to code injection or exploit) 32->69 71 Performs DNS queries to domains with low reputation 32->71 36 chkdsk.exe 32->36         started        signatures20 process21 signatures22 87 Modifies the context of a thread in another process (thread injection) 36->87 89 Maps a DLL or memory area into another process 36->89 91 Tries to detect virtualization through RDTSC time measurements 36->91 93 2 other signatures 36->93 39 cmd.exe 36->39         started        process23
Score:
100%
Verdict:
Malware
File Type:
SCRIPT
Link:
https://malprob.io/report/29894cfea1f1f742f90e595a4b0e19b3de66d14eef3209331d653b5f49da8c62
Detection:
cve-2017-11882-shellcode
Create hunting rule
Link:
https://mwdb.cert.pl/sample/29894cfea1f1f742f90e595a4b0e19b3de66d14eef3209331d653b5f49da8c62/
Threat name:
Document-RTF.Exploit.CVE-2017-11882
Create hunting rule
Status:
Malicious
First seen:
2024-07-17 15:20:56 UTC
File Type:
Document
Extracted files:
5
AV detection:
15 of 24 (62.50%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=fgeuz7vb6h3uf6iolfnewdqzwppgnuko54zasmy5mu5v6so2rrra._file
Result
Malware family:
n/a
Score:
  8/10
Tags:
execution
Link:
https://tria.ge/reports/240718-ffn9aaygnb/
Behaviour
Checks processor information in registry
Enumerates system info in registry
Launches Equation Editor
Suspicious behavior: AddClipboardFormatListener
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Office loads VBA resources, possible macro or embedded object present
Command and Scripting Interpreter: PowerShell
Enumerates physical storage devices
Drops file in Windows directory
Drops file in System32 directory
Blocklisted process makes network request
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/05fc51b7-c4f1-4985-a02e-0416963b9ec6
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/29894cfea1f1/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/29894cfea1f1f742f90e595a4b0e19b3de66d14eef3209331d653b5f49da8c62

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:SUSP_INDICATOR_RTF_MalVer_Objects
Create hunting rule
Author:ditekSHen
Description:Detects RTF documents with non-standard version and embedding one of the object mostly observed in exploit (e.g. CVE-2017-11882) documents.
Reference:https://github.com/ditekshen/detection

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 29894cfea1f1f742f90e595a4b0e19b3de66d14eef3209331d653b5f49da8c62

(this sample)

  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/3050270/

Comments


Avatar
zbet commented on 2024-07-18 04:48:26 UTC

url : hxxp://103.161.133.121/80180/cno/cno.cno.cno.cnocnocno.doc