MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 59dad890842120178c79a9d3b7947dac9bc9d1f074437fdbca765c1867534166. 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: 10


Intelligence 10 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 59dad890842120178c79a9d3b7947dac9bc9d1f074437fdbca765c1867534166
SHA3-384 hash: f547c67dac6f8f2c3a5340c06851e63f63968d86c1001f8952da503038b9d5df08e3c8304b37cf04296019d2fcdcc01a
SHA1 hash: ecadd711c7fc21009d53958e1d139819f9918f78
MD5 hash: 11f7254f05c7b7f931284c6b90cf2d7c
humanhash: happy-louisiana-timing-venus
File name:Arrival Notice.doc
Download: download sample
Signature Formbook
Create hunting rule
File size:341'595 bytes
First seen:2024-05-03 09:27:30 UTC
Last seen:2024-05-03 18:11:31 UTC
File type:Word file doc
MIME type:text/rtf
ssdeep 6144:fwAYwAYwAYwAYwAYwAYwAYwAYwAYwAshnZhJ7:pd7
TLSH T10074BF2DD34B02598F620377AB571E5142BDBA7EF38552B1302C537933EAC39A1252BE
Reporter abuse_ch
Tags:CVE-2017-11882 doc FormBook

Intelligence

File Origin
# of uploads :
3
# of downloads :
367
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
59dad890842120178c79a9d3b7947dac9bc9d1f074437fdbca765c1867534166.doc
Verdict:
Suspicious activity
Analysis date:
2024-05-03 09:33:09 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/f1d4ca64-795c-46af-9b2f-d322e2dc4458

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
Sanesecurity.Malware.29015.RtfHeur.Msg.UNOFFICIAL
Create hunting rule

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

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

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

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
Connection attempt to an infection source by exploiting the app vulnerability
Creating a file in the %AppData% directory
Creating a file in the %temp% directory
Сreating synchronization primitives
Query of malicious DNS domain
Launching a file downloaded from the Internet
Sending a TCP request to an infection source by exploiting the app vulnerability
Creating a process from a recently created file
Unauthorized injection to a system process
Launching a process by exploiting the app vulnerability
Result
Verdict:
Malicious
File Type:
Fake RTF File
Link:
https://app.docguard.net/59dad890842120178c79a9d3b7947dac9bc9d1f074437fdbca765c1867534166/results/dashboard
Behaviour
BlacklistAPI detected
Verdict:
Malicious
Labled as:
CVE-2018-0798
Link:
https://www.hybrid-analysis.com/sample/59dad890842120178c79a9d3b7947dac9bc9d1f074437fdbca765c1867534166
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/1435895
Signature
Antivirus detection for URL or domain
Binary is likely a compiled AutoIt script file
Document exploit detected (process start blacklist hit)
Found API chain indicative of sandbox detection
Found direct / indirect Syscall (likely to bypass EDR)
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)
Sample uses process hollowing technique
Sigma detected: Equation Editor Network Connection
Sigma detected: File Dropped By EQNEDT32EXE
Sigma detected: Legitimate Application Dropped Archive
Sigma detected: Legitimate Application Dropped Executable
Sigma detected: Suspicious Binary In User Directory Spawned From Office Application
Sigma detected: Suspicious Microsoft Office Child Process
Snort IDS alert for network traffic
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Writes to foreign memory regions
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1435895 Sample: Arrival Notice.doc Startdate: 03/05/2024 Architecture: WINDOWS Score: 100 58 Snort IDS alert for network traffic 2->58 60 Multi AV Scanner detection for domain / URL 2->60 62 Malicious sample detected (through community Yara rule) 2->62 64 15 other signatures 2->64 11 WINWORD.EXE 336 14 2->11         started        process3 process4 13 EQNEDT32.EXE 11 11->13         started        18 EQNEDT32.EXE 11->18         started        dnsIp5 54 covid19help.top 172.67.175.222, 443, 49163 CLOUDFLARENETUS United States 13->54 40 C:\Users\user\...\fredchungel99962.exe, PE32 13->40 dropped 42 C:\Users\user\AppData\Local\...\BE[1].exe, PE32 13->42 dropped 82 Installs new ROOT certificates 13->82 84 Office equation editor establishes network connection 13->84 86 Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802) 13->86 20 fredchungel99962.exe 4 13->20         started        file6 signatures7 process8 signatures9 68 Binary is likely a compiled AutoIt script file 20->68 70 Machine Learning detection for dropped file 20->70 72 Found API chain indicative of sandbox detection 20->72 74 2 other signatures 20->74 23 svchost.exe 20->23         started        process10 signatures11 76 Maps a DLL or memory area into another process 23->76 26 CDWVOahfvgiDRJzfAMolQRnDPlOohi.exe 23->26 injected process12 signatures13 78 Maps a DLL or memory area into another process 26->78 80 Found direct / indirect Syscall (likely to bypass EDR) 26->80 29 finger.exe 1 20 26->29         started        process14 dnsIp15 56 www.sqlite.org 45.33.6.223, 49165, 80 LINODE-APLinodeLLCUS United States 29->56 44 C:\Users\user\AppData\Local\...\sqlite3.dll, PE32 29->44 dropped 46 C:\...\sqlite-dll-win32-x86-3240000[1].zip, Zip 29->46 dropped 88 Tries to steal Mail credentials (via file / registry access) 29->88 90 Tries to harvest and steal browser information (history, passwords, etc) 29->90 92 Maps a DLL or memory area into another process 29->92 94 2 other signatures 29->94 34 CDWVOahfvgiDRJzfAMolQRnDPlOohi.exe 29->34 injected 38 firefox.exe 29->38         started        file16 signatures17 process18 dnsIp19 48 www.deniztemiz.fun 46.28.105.2, 49190, 49191, 49192 WEDOSCZ Czech Republic 34->48 50 www.gudvain.top 203.161.62.199, 49182, 49183, 49184 VNPT-AS-VNVNPTCorpVN Malaysia 34->50 52 16 other IPs or domains 34->52 66 Found direct / indirect Syscall (likely to bypass EDR) 34->66 signatures20
Score:
96%
Verdict:
Malware
File Type:
SCRIPT
Link:
https://malprob.io/report/59dad890842120178c79a9d3b7947dac9bc9d1f074437fdbca765c1867534166
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/59dad890842120178c79a9d3b7947dac9bc9d1f074437fdbca765c1867534166/
Threat name:
Document-RTF.Exploit.CVE-2017-11882
Create hunting rule
Status:
Malicious
First seen:
2024-05-02 21:46:10 UTC
File Type:
Document
Extracted files:
3
AV detection:
17 of 37 (45.95%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=lhnnreeeeeqbpddzvhj3pfd5vsn4tupqorbx7w6kozobqz2tifta._file
Result
Malware family:
n/a
Score:
  10/10
Tags:
n/a
Link:
https://tria.ge/reports/240503-lfbk3sbf4x/
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
AutoIT Executable
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/59dad8908421/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/59dad890842120178c79a9d3b7947dac9bc9d1f074437fdbca765c1867534166

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.

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