MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 3445d16ad6e5de9939611d9bc5f3169581c3bd1166ad228506d6be70ac1eacbd. 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: 13


Intelligence 13 IOCs YARA 3 File information Comments 1
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 3445d16ad6e5de9939611d9bc5f3169581c3bd1166ad228506d6be70ac1eacbd
SHA3-384 hash: 6815fd31926d33d17fef1c4aecd8d436061f84b935c13f46a6b2271d8af6280a0e1697a7fb14ffdc089875f353893e97
SHA1 hash: 4eae75c6e3d552ec1ff34d3ee00a7ee0d6f92bd0
MD5 hash: 87930142ba02cbbfe0b77ab3beb3d1bc
humanhash: sad-johnny-mango-rugby
File name:87930142ba02cbbfe0b77ab3beb3d1bc
Download: download sample
Signature Formbook
Create hunting rule
File size:82'485 bytes
First seen:2024-05-09 04:18:27 UTC
Last seen:2024-05-09 05:22:12 UTC
File type:Rich Text Format (RTF) rtf
MIME type:text/rtf
ssdeep 1536:LAXgS04nWQuhEWhCBt2KET+qMPsAvBgdPwVI6PbxULWI4qtqi/wEXvgaew6iAzab:IggWQuhBCB8KET+qMPsAvBgWVI6POLW8
TLSH T1F883D96EE30F0965DF55A77B434A4E4A05FCB33EB28540B179AC973437AD82E462287C
Reporter zbetcheckin
Tags:CVE-2017-11882 FormBook rtf

Intelligence

File Origin
# of uploads :
2
# of downloads :
113
Origin country :
FR FR
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
3445d16ad6e5de9939611d9bc5f3169581c3bd1166ad228506d6be70ac1eacbd.rtf
Verdict:
Malicious activity
Analysis date:
2024-05-09 04:19:57 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/4b4d375e-25dc-4115-8213-0fdc951a7b6b

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
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

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
Creating a file in the %AppData% directory
Сreating synchronization primitives
Launching a service
Enabling the 'hidden' option for recently created files
Adding an access-denied ACE
Creating a file in the %temp% directory
Creating a process with a hidden window
Creating a file
Launching cmd.exe command interpreter
Connection attempt by exploiting the app vulnerability
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
Creating a process from a recently created file
Enabling autorun by creating a file
Unauthorized injection to a system process
Result
Verdict:
Malicious
File Type:
RTF File
Link:
https://app.docguard.net/3445d16ad6e5de9939611d9bc5f3169581c3bd1166ad228506d6be70ac1eacbd/results/dashboard
Behaviour
BlacklistAPI detected
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
embedequation exploit packed shellcode
Link:
https://www.filescan.io/uploads/663c4eb9b8652ad994a2d55e/reports/316cbe1a-bf15-4dce-ae8f-5acd287c6b45/overview
Verdict:
Malicious
Labled as:
CVE-2017-11882
Link:
https://www.hybrid-analysis.com/sample/3445d16ad6e5de9939611d9bc5f3169581c3bd1166ad228506d6be70ac1eacbd
Result
Threat name:
FormBook, PureLog Stealer
Create hunting rule
Detection:
malicious
Classification:
troj.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1438723
Signature
.NET source code contains method to dynamically call methods (often used by packers)
.NET source code contains potential unpacker
Adds a directory exclusion to Windows Defender
Antivirus / Scanner detection for submitted sample
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Contains functionality to hide windows to a different desktop
Detected unpacking (changes PE section rights)
Detected unpacking (overwrites its own PE header)
Document exploit detected (process start blacklist hit)
Found malware configuration
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
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 submitted file
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
Shellcode detected
Sigma detected: EQNEDT32.EXE connecting to internet
Sigma detected: Equation Editor Network Connection
Sigma detected: File Dropped By EQNEDT32EXE
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
Sigma detected: Scheduled temp file as task from temp location
Sigma detected: Suspicious Binary In User Directory Spawned From Office Application
Sigma detected: Suspicious Microsoft Office Child Process
Snort IDS alert for network traffic
System process connects to network (likely due to code injection or exploit)
Tries to detect virtualization through RDTSC time measurements
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected FormBook
Yara detected PureLog Stealer
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1438723 Sample: oQj0k2KdIP.rtf Startdate: 09/05/2024 Architecture: WINDOWS Score: 100 90 Snort IDS alert for network traffic 2->90 92 Found malware configuration 2->92 94 Malicious sample detected (through community Yara rule) 2->94 96 21 other signatures 2->96 11 WINWORD.EXE 336 13 2->11         started        13 taskeng.exe 1 2->13         started        process3 process4 15 EQNEDT32.EXE 12 11->15         started        20 EQNEDT32.EXE 11->20         started        22 zNukUlepyAI.exe 13->22         started        dnsIp5 68 192.3.179.142, 49161, 80 AS-COLOCROSSINGUS United States 15->68 54 C:\Users\user\AppData\Roaming\hjcl.exe, PE32 15->54 dropped 56 C:\Users\user\AppData\Local\...\HJCL[1].exe, PE32 15->56 dropped 70 Office equation editor establishes network connection 15->70 72 Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802) 15->72 24 hjcl.exe 1 10 15->24         started        74 Detected unpacking (changes PE section rights) 22->74 76 Machine Learning detection for dropped file 22->76 78 Adds a directory exclusion to Windows Defender 22->78 80 2 other signatures 22->80 28 zNukUlepyAI.exe 22->28         started        30 powershell.exe 22->30         started        32 schtasks.exe 22->32         started        file6 signatures7 process8 file9 58 C:\Users\user\AppData\...\zNukUlepyAI.exe, PE32 24->58 dropped 60 C:\Users\user\AppData\Local\...\tmp2EA0.tmp, XML 24->60 dropped 110 Detected unpacking (changes PE section rights) 24->110 112 Detected unpacking (overwrites its own PE header) 24->112 114 Machine Learning detection for dropped file 24->114 122 4 other signatures 24->122 34 hjcl.exe 24->34         started        37 powershell.exe 4 24->37         started        39 schtasks.exe 24->39         started        41 hjcl.exe 24->41         started        116 Modifies the context of a thread in another process (thread injection) 28->116 118 Maps a DLL or memory area into another process 28->118 120 Sample uses process hollowing technique 28->120 43 help.exe 28->43         started        signatures10 process11 signatures12 98 Modifies the context of a thread in another process (thread injection) 34->98 100 Maps a DLL or memory area into another process 34->100 102 Sample uses process hollowing technique 34->102 104 Queues an APC in another process (thread injection) 34->104 45 explorer.exe 34->45 injected 106 Installs new ROOT certificates 37->106 108 Tries to detect virtualization through RDTSC time measurements 43->108 process13 dnsIp14 62 www.used-cars-77695.bond 45->62 64 www.campbellforamerica.com 45->64 66 6 other IPs or domains 45->66 124 System process connects to network (likely due to code injection or exploit) 45->124 49 wininit.exe 45->49         started        signatures15 process16 signatures17 82 Modifies the context of a thread in another process (thread injection) 49->82 84 Contains functionality to hide windows to a different desktop 49->84 86 Maps a DLL or memory area into another process 49->86 88 Tries to detect virtualization through RDTSC time measurements 49->88 52 cmd.exe 49->52         started        process18
Score:
100%
Verdict:
Malware
File Type:
SCRIPT
Link:
https://malprob.io/report/3445d16ad6e5de9939611d9bc5f3169581c3bd1166ad228506d6be70ac1eacbd
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/3445d16ad6e5de9939611d9bc5f3169581c3bd1166ad228506d6be70ac1eacbd/
Threat name:
Document-Office.Exploit.CVE-2017-11882
Create hunting rule
Status:
Malicious
First seen:
2024-05-09 00:55:05 UTC
File Type:
Document
Extracted files:
4
AV detection:
16 of 24 (66.67%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=grc5c2ww4xpjsolbdwn4l4ywswa4hpirm2wsfbig227hbla6vs6q._file
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:ht3d execution rat spyware stealer trojan
Link:
https://tria.ge/reports/240509-exhbmadb55/
Behaviour
Checks processor information in registry
Creates scheduled task(s)
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 AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Office loads VBA resources, possible macro or embedded object present
Enumerates physical storage devices
Drops file in Windows directory
Drops file in System32 directory
Suspicious use of SetThreadContext
Executes dropped EXE
Loads dropped DLL
Blocklisted process makes network request
Command and Scripting Interpreter: PowerShell
Downloads MZ/PE file
Formbook payload
Formbook
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/3445d16ad6e5/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/3445d16ad6e5de9939611d9bc5f3169581c3bd1166ad228506d6be70ac1eacbd

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:DebuggerCheck__API
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
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.

Web download

Formbook

Rich Text Format (RTF) rtf 3445d16ad6e5de9939611d9bc5f3169581c3bd1166ad228506d6be70ac1eacbd

(this sample)

  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/2843843/

Comments


Avatar
zbet commented on 2024-05-09 04:18:28 UTC

url : hxxp://192.3.179.142/xampp/wksh/wk/veryhappytoseeherthingstogetitsbackwithlotofthingssurewewillbebacksoonandeverythinggogreatwithout___happeingkisses.doc