General
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Target
RNSM00477.7z
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Size
22.4MB
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Sample
240920-xd894ssapj
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MD5
e74213e7f48bbb4fc4fba13f0bfaad96
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SHA1
ed97322c26c9f7a028b3c587b5d1aaf656b0f22f
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SHA256
f1495ff599ccc310bb271cdb147f212dc55a6964e46fe037268638e32d591988
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SHA512
c520dac8d25ef5c0864f81e2573dd049fdf5887cbd601488f633549713696a2ac0dd8b4166531c9a40a40010d01381d13f12e7266a7d3b633422618e3bd6d0e0
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SSDEEP
393216:uvQVZl/lgu206A8Vdj0RlYl2g9jQ/kWwjTd4hoSGt/D3rrKAqUpW1Zb3CDDoX25P:KQV/lg506/djICP9jQ/FwtivGJ3r7jpF
Static task
static1
Behavioral task
behavioral1
Sample
RNSM00477.7z
Resource
win10v2004-20240802-en
Malware Config
Extracted
djvu
http://tbpws.top/fhsgtsspen6/get.php
http://securebiz.org/fhsgtsspen6/get.php
http://wrrst.top/fhsgtsspen6/get.php
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extension
.wiot
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offline_id
sZ9rF572Y03XTlUZsBUVlV9YksFOEsyIfGx58yt1
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payload_url
http://securebiz.org/dl/build2.exe
http://tbpws.top/files/1/build3.exe
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ransomnote
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Extracted
nullmixer
http://watira.xyz/
Extracted
vidar
39.7
933
https://shpak125.tumblr.com/
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profile_id
933
Extracted
urelas
112.175.88.207
112.175.88.208
1.234.83.146
133.242.129.155
218.54.31.226
218.54.30.235
218.54.31.165
Targets
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Target
RNSM00477.7z
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Size
22.4MB
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MD5
e74213e7f48bbb4fc4fba13f0bfaad96
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SHA1
ed97322c26c9f7a028b3c587b5d1aaf656b0f22f
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SHA256
f1495ff599ccc310bb271cdb147f212dc55a6964e46fe037268638e32d591988
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SHA512
c520dac8d25ef5c0864f81e2573dd049fdf5887cbd601488f633549713696a2ac0dd8b4166531c9a40a40010d01381d13f12e7266a7d3b633422618e3bd6d0e0
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SSDEEP
393216:uvQVZl/lgu206A8Vdj0RlYl2g9jQ/kWwjTd4hoSGt/D3rrKAqUpW1Zb3CDDoX25P:KQV/lg506/djICP9jQ/FwtivGJ3r7jpF
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Detected Djvu ransomware
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Dharma
Dharma is a ransomware that uses security software installation to hide malicious activities.
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Modifies WinLogon for persistence
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Process spawned unexpected child process
This typically indicates the parent process was compromised via an exploit or macro.
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Deletes shadow copies
Ransomware often targets backup files to inhibit system recovery.
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Renames multiple (329) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
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Vidar Stealer
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Blocklisted process makes network request
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Contacts a large (1134) amount of remote hosts
This may indicate a network scan to discover remotely running services.
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Modifies Windows Firewall
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Checks computer location settings
Looks up country code configured in the registry, likely geofence.
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Drops startup file
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Executes dropped EXE
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Loads dropped DLL
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Modifies file permissions
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Uses the VBS compiler for execution
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Adds Run key to start application
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Drops desktop.ini file(s)
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Enumerates connected drives
Attempts to read the root path of hard drives other than the default C: drive.
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Indicator Removal: File Deletion
Adversaries may delete files left behind by the actions of their intrusion activity.
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Legitimate hosting services abused for malware hosting/C2
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Looks up external IP address via web service
Uses a legitimate IP lookup service to find the infected system's external IP.
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Drops autorun.inf file
Malware can abuse Windows Autorun to spread further via attached volumes.
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Drops file in System32 directory
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Suspicious use of NtSetInformationThreadHideFromDebugger
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Suspicious use of SetThreadContext
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MITRE ATT&CK Enterprise v15
Execution
Command and Scripting Interpreter
1JavaScript
1Scheduled Task/Job
1Scheduled Task
1Scripting
1Windows Management Instrumentation
1Persistence
Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
1Winlogon Helper DLL
1Create or Modify System Process
1Windows Service
1Event Triggered Execution
1Netsh Helper DLL
1Scheduled Task/Job
1Scheduled Task
1Privilege Escalation
Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
1Winlogon Helper DLL
1Create or Modify System Process
1Windows Service
1Event Triggered Execution
1Netsh Helper DLL
1Scheduled Task/Job
1Scheduled Task
1Defense Evasion
Direct Volume Access
1File and Directory Permissions Modification
1Impair Defenses
1Disable or Modify System Firewall
1Indicator Removal
3File Deletion
3Modify Registry
3Scripting
1