General
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Target
krunker.iohacks.cc
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Size
30.9MB
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Sample
240110-ax5dyaaecn
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MD5
2850f1cb75953d9e0232344f6a13bf48
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SHA1
141ab8929fbe01031ab1e559d880440ae931cc16
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SHA256
892f11af94dea87bc8a85acdb092c74541b0ab63c8fcc1823ba7987c82c6e9ba
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SHA512
25551eb0fbca013bcebd514eb72185e157a07f116a6973bfe4b728febcefc7044a816c5c70048c3fda2eeb4ce53b52bd7b19ef1ef851a0f4fc90451e60540d6d
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SSDEEP
786432:j8Zic+QKJObt2u8xQYcLpoTEjoAsM0D0EHShV/:j8YQzB8xQzLp+nAV0BK
Static task
static1
Malware Config
Extracted
Protocol: ftp- Host:
files.000webhost.com - Port:
21 - Username:
fcb-aws-host-4
Extracted
C:\Users\Admin\Documents\@[email protected]
wannacry
13AM4VW2dhxYgXeQepoHkHSQuy6NgaEb94
Extracted
F:\$RECYCLE.BIN\DECRYPT-FILES.txt
maze
http://aoacugmutagkwctu.onion/6b950ca2b8011a1e
https://mazedecrypt.top/6b950ca2b8011a1e
Extracted
http://192.168.5.128/powercat.ps1
Extracted
C:\odt\DECRYPT-FILES.txt
maze
http://aoacugmutagkwctu.onion/6c2b0cba391cf6d5
https://mazedecrypt.top/6c2b0cba391cf6d5
Extracted
C:\Users\Admin\AppData\Roaming\Microsoft\Office\Recent\_R_E_A_D___T_H_I_S___SJYHCB_.txt
cerber
http://xpcx6erilkjced3j.onion/1A5A-CD18-1D46-0098-B26C
http://xpcx6erilkjced3j.1n5mod.top/1A5A-CD18-1D46-0098-B26C
http://xpcx6erilkjced3j.19kdeh.top/1A5A-CD18-1D46-0098-B26C
http://xpcx6erilkjced3j.1mpsnr.top/1A5A-CD18-1D46-0098-B26C
http://xpcx6erilkjced3j.18ey8e.top/1A5A-CD18-1D46-0098-B26C
http://xpcx6erilkjced3j.17gcun.top/1A5A-CD18-1D46-0098-B26C
Targets
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Target
krunker.iohacks.cc
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Size
30.9MB
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MD5
2850f1cb75953d9e0232344f6a13bf48
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SHA1
141ab8929fbe01031ab1e559d880440ae931cc16
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SHA256
892f11af94dea87bc8a85acdb092c74541b0ab63c8fcc1823ba7987c82c6e9ba
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SHA512
25551eb0fbca013bcebd514eb72185e157a07f116a6973bfe4b728febcefc7044a816c5c70048c3fda2eeb4ce53b52bd7b19ef1ef851a0f4fc90451e60540d6d
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SSDEEP
786432:j8Zic+QKJObt2u8xQYcLpoTEjoAsM0D0EHShV/:j8YQzB8xQzLp+nAV0BK
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DcRat
DarkCrystal(DC) is a new .NET RAT active since June 2019 capable of loading additional plugins.
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Detect Neshta payload
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Detect ZGRat V1
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Neshta
Malware from the neshta family is designed to infect itself into other files to spread itself and cause damage.
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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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Rhadamanthys
Rhadamanthys is an info stealer written in C++ first seen in August 2022.
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Suspicious use of NtCreateUserProcessOtherParentProcess
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Enumerates VirtualBox registry keys
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Identifies VirtualBox via ACPI registry values (likely anti-VM)
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Looks for VirtualBox Guest Additions in registry
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NirSoft MailPassView
Password recovery tool for various email clients
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NirSoft WebBrowserPassView
Password recovery tool for various web browsers
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Nirsoft
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Renames multiple (67) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
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Blocklisted process makes network request
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Contacts a large (1129) amount of remote hosts
This may indicate a network scan to discover remotely running services.
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Downloads MZ/PE file
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Looks for VMWare Tools registry key
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Modifies Windows Firewall
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Stops running service(s)
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.NET Reactor proctector
Detects an executable protected by an unregistered version of Eziriz's .NET Reactor.
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Checks BIOS information in registry
BIOS information is often read in order to detect sandboxing environments.
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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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Modifies system executable filetype association
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Uses the VBS compiler for execution
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Adds Run key to start application
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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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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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Checks system information in the registry
System information is often read in order to detect sandboxing environments.
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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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Sets desktop wallpaper using registry
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Suspicious use of SetThreadContext
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MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
2Windows Service
2Event Triggered Execution
1Change Default File Association
1Scheduled Task/Job
1Privilege Escalation
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
2Windows Service
2Event Triggered Execution
1Change Default File Association
1Scheduled Task/Job
1Defense Evasion
Abuse Elevation Control Mechanism
1Bypass User Account Control
1File and Directory Permissions Modification
1Hide Artifacts
1Hidden Files and Directories
1Impair Defenses
2Disable or Modify Tools
1Indicator Removal
2File Deletion
2Modify Registry
8Scripting
1Subvert Trust Controls
1Install Root Certificate
1Virtualization/Sandbox Evasion
4