MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 844a17a6a53f849d31668e7bb26e2ddc0606a3785e3374da92e0e8f241a0da05. 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: 12


Intelligence 12 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 844a17a6a53f849d31668e7bb26e2ddc0606a3785e3374da92e0e8f241a0da05
SHA3-384 hash: 83ffe293e4b39aa1e48b43df33e97a6ca427f638e38413be59df37a53a6c95d447c46c013e92d985c110eddbae79e0e6
SHA1 hash: 8489a7ea542bcec1736471577ebadd7a877d3479
MD5 hash: af31bf147cf66992b9f4a2b344cb2c25
humanhash: yankee-mobile-blue-green
File name:APR PAYROLL.doc
Download: download sample
Signature Formbook
Create hunting rule
File size:393'812 bytes
First seen:2024-04-30 05:41:52 UTC
Last seen:2024-04-30 06:37:30 UTC
File type:Word file doc
MIME type:text/rtf
ssdeep 6144:9wAYwAYwAYwAYwAYwAYwAYwAYwAYwAirM2m2+:vY
TLSH T166849D2DD34B02598F620376AB571E5142BDBB7EF38552B1302C537933EAC39A1252BE
Reporter abuse_ch
Tags:CVE-2017-11882 doc FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
357
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
844a17a6a53f849d31668e7bb26e2ddc0606a3785e3374da92e0e8f241a0da05.doc
Verdict:
Suspicious activity
Analysis date:
2024-04-30 06:06:53 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/8d38c41c-573c-462c-a872-e7ca6dd98c9e

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Legit
File type:
application/msword
Has a screenshot:
False
Contains macros:
False
Detection(s):
Sanesecurity.Malware.29015.RtfHeur.Msg.UNOFFICIAL
Create hunting rule

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

TwinWave.EvilDoc.RoomService.20230808.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for synchronization primitives
Launching a process
Using the Windows Management Instrumentation requests
Creating a window
Connection attempt to an infection source by exploiting the app vulnerability
Creating a file in the %AppData% directory
Сreating synchronization primitives
Creating a file
Launching a service
Query of malicious DNS domain
Launching a file downloaded from the Internet
Unauthorized injection to a recently created process
Unauthorized injection to a recently created process by context flags manipulation
Sending a TCP request to an infection source 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:
Fake RTF File
Link:
https://app.docguard.net/844a17a6a53f849d31668e7bb26e2ddc0606a3785e3374da92e0e8f241a0da05/results/dashboard
Behaviour
BlacklistAPI detected
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Link:
https://www.filescan.io/uploads/663084b254bafb7d21e6eb1b/reports/78833206-82c3-4f54-b41d-6186d97a381e/overview
Verdict:
Malicious
Labled as:
CVE-2018-0798
Link:
https://www.hybrid-analysis.com/sample/844a17a6a53f849d31668e7bb26e2ddc0606a3785e3374da92e0e8f241a0da05
Gathering data
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1433843
Signature
.NET source code contains potential unpacker
.NET source code references suspicious native API functions
Antivirus detection for URL or domain
Document exploit detected (process start blacklist hit)
Drops PE files with a suspicious file extension
Found direct / indirect Syscall (likely to bypass EDR)
Injects a PE file into a foreign processes
Installs new ROOT certificates
Machine Learning detection for dropped file
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for submitted file
Office document tries to convince victim to disable security protection (e.g. to enable ActiveX or Macros)
Office equation editor drops PE file
Office equation editor establishes network connection
Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802)
Queues an APC in another process (thread injection)
Sigma detected: Equation Editor Network Connection
Sigma detected: Suspicious Microsoft Office Child Process
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Yara detected FormBook
Yara detected Generic Downloader
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1433843 Sample: APR PAYROLL.doc Startdate: 30/04/2024 Architecture: WINDOWS Score: 100 47 www.reynerie.org 2->47 49 reynerie.org 2->49 77 Multi AV Scanner detection for domain / URL 2->77 79 Malicious sample detected (through community Yara rule) 2->79 81 Antivirus detection for URL or domain 2->81 83 13 other signatures 2->83 12 WINWORD.EXE 336 14 2->12         started        signatures3 process4 process5 14 EQNEDT32.EXE 11 12->14         started        19 EQNEDT32.EXE 12->19         started        dnsIp6 57 universalmovies.top 172.67.162.95, 443, 49165 CLOUDFLARENETUS United States 14->57 41 C:\Users\user\AppData\...\peace76209.scr, PE32 14->41 dropped 43 C:\Users\user\AppData\...\findpeacebin[1].scr, PE32 14->43 dropped 63 Installs new ROOT certificates 14->63 65 Office equation editor establishes network connection 14->65 67 Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802) 14->67 21 peace76209.scr 2 14->21         started        file7 signatures8 process9 signatures10 87 Machine Learning detection for dropped file 21->87 89 Injects a PE file into a foreign processes 21->89 24 peace76209.scr 21->24         started        process11 signatures12 91 Maps a DLL or memory area into another process 24->91 27 KJhjEYFGpAHmKdtDov.exe 24->27 injected process13 signatures14 93 Maps a DLL or memory area into another process 27->93 95 Found direct / indirect Syscall (likely to bypass EDR) 27->95 30 TapiUnattend.exe 1 20 27->30         started        process15 dnsIp16 59 www.sqlite.org 45.33.6.223, 49167, 80 LINODE-APLinodeLLCUS United States 30->59 61 192.168.2.255, 137, 138 unknown unknown 30->61 45 C:\Users\user\AppData\Local\...\sqlite3.dll, PE32 30->45 dropped 69 Tries to steal Mail credentials (via file / registry access) 30->69 71 Tries to harvest and steal browser information (history, passwords, etc) 30->71 73 Maps a DLL or memory area into another process 30->73 75 Queues an APC in another process (thread injection) 30->75 35 KJhjEYFGpAHmKdtDov.exe 30->35 injected 39 firefox.exe 30->39         started        file17 signatures18 process19 dnsIp20 51 sweetbeespoly.store 202.92.7.88, 49166, 80 VNPT-AS-VNVNPTCorpVN Viet Nam 35->51 53 vavada-band.ru 148.251.36.121, 49168, 49169, 80 HETZNER-ASDE Germany 35->53 55 6 other IPs or domains 35->55 85 Found direct / indirect Syscall (likely to bypass EDR) 35->85 signatures21
Score:
98%
Verdict:
Malware
File Type:
SCRIPT
Link:
https://malprob.io/report/844a17a6a53f849d31668e7bb26e2ddc0606a3785e3374da92e0e8f241a0da05
Detection:
cve-2017-11882-shellcode
Create hunting rule
Link:
https://mwdb.cert.pl/sample/844a17a6a53f849d31668e7bb26e2ddc0606a3785e3374da92e0e8f241a0da05/
Threat name:
Document-RTF.Exploit.CVE-2017-11882
Create hunting rule
Status:
Malicious
First seen:
2024-04-30 01:21:59 UTC
File Type:
Document
Extracted files:
3
AV detection:
17 of 38 (44.74%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=qrfbpjvfh6cj2mlgrz53e3rn3qdani3ylyzxjwus4dupeqna3icq._file
Result
Malware family:
n/a
Score:
  10/10
Tags:
n/a
Link:
https://tria.ge/reports/240430-gd1pzaec7v/
Behaviour
Checks processor information in registry
Enumerates system info in registry
Launches Equation Editor
Modifies Internet Explorer settings
Modifies registry class
Suspicious behavior: AddClipboardFormatListener
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Office loads VBA resources, possible macro or embedded object present
Drops file in Windows directory
Suspicious use of SetThreadContext
Executes dropped EXE
Loads dropped DLL
Blocklisted process makes network request
Downloads MZ/PE file
Process spawned unexpected child process
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/844a17a6a53f/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/844a17a6a53f849d31668e7bb26e2ddc0606a3785e3374da92e0e8f241a0da05

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:INDICATOR_RTF_MalVer_Objects
Create hunting rule
Author:ditekSHen
Description:Detects RTF documents with non-standard version and embeding one of the object mostly observed in exploit documents.
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.

Comments