General
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Target
4f7bb05edfb383b45568b57b070655812cbc2f7cbbc6fe6f772e16dc55c27e93
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Size
1.8MB
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Sample
240520-18lzvaab21
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MD5
cdc65246c0f8b5a8b817385647c65dd2
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SHA1
254ed48e117fb89462e1e2c713baad6d2f76fb49
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SHA256
4f7bb05edfb383b45568b57b070655812cbc2f7cbbc6fe6f772e16dc55c27e93
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SHA512
65f3c526eb906d64bbbd704730e97b0ddfc2c65ae43ac396402b41d04019775aa028d7fe15f46bb82a4fd75498e97d9dadb2b19123e736aea5785d041951e7df
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SSDEEP
49152:pn3ZJ5CTaCMUTPNDWp3C3fvsS/MhQmI7v4UI:Bv5C7M8PNDS3CvvihVI7vTI
Behavioral task
behavioral1
Sample
4f7bb05edfb383b45568b57b070655812cbc2f7cbbc6fe6f772e16dc55c27e93.exe
Resource
win7-20231129-en
Malware Config
Extracted
https://d22hce23hy1ej9.cloudfront.net/load/th.php?a=2836&c=1002
Extracted
https://d22hce23hy1ej9.cloudfront.net/load/dl.php?id=458&c=1002
Extracted
https://d22hce23hy1ej9.cloudfront.net/load/dl.php?id=444&c=1002
Extracted
amadey
4.20
18befc
http://5.42.96.141
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install_dir
908f070dff
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install_file
explorku.exe
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strings_key
b25a9385246248a95c600f9a061438e1
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url_paths
/go34ko8/index.php
Extracted
risepro
147.45.47.126:58709
Extracted
amadey
4.20
c767c0
http://5.42.96.7
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install_dir
7af68cdb52
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install_file
axplons.exe
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strings_key
e2ce58e78f631ed97d01fe7b70e85d5e
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url_paths
/zamo7h/index.php
Extracted
redline
1
185.215.113.67:26260
Targets
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Target
4f7bb05edfb383b45568b57b070655812cbc2f7cbbc6fe6f772e16dc55c27e93
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Size
1.8MB
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MD5
cdc65246c0f8b5a8b817385647c65dd2
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SHA1
254ed48e117fb89462e1e2c713baad6d2f76fb49
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SHA256
4f7bb05edfb383b45568b57b070655812cbc2f7cbbc6fe6f772e16dc55c27e93
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SHA512
65f3c526eb906d64bbbd704730e97b0ddfc2c65ae43ac396402b41d04019775aa028d7fe15f46bb82a4fd75498e97d9dadb2b19123e736aea5785d041951e7df
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SSDEEP
49152:pn3ZJ5CTaCMUTPNDWp3C3fvsS/MhQmI7v4UI:Bv5C7M8PNDS3CvvihVI7vTI
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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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Modifies firewall policy service
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PrivateLoader
PrivateLoader is a downloader sold as a pay-per-install malware distribution service.
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RedLine
RedLine Stealer is a malware family written in C#, first appearing in early 2020.
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RedLine payload
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Detects executables (downlaoders) containing URLs to raw contents of a paste
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Detects executables packed with Themida
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Detects executables packed with or use KoiVM
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Identifies VirtualBox via ACPI registry values (likely anti-VM)
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Blocklisted process makes network request
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Creates new service(s)
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Downloads MZ/PE file
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Drops file in Drivers directory
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Sets service image path in registry
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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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Executes dropped EXE
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Identifies Wine through registry keys
Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.
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Loads dropped DLL
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Modifies system executable filetype association
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Registers COM server for autorun
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Unexpected DNS network traffic destination
Network traffic to other servers than the configured DNS servers was detected on the DNS port.
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Adds Run key to start application
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Checks for any installed AV software in registry
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Checks installed software on the system
Looks up Uninstall key entries in the registry to enumerate software on the system.
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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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Writes to the Master Boot Record (MBR)
Bootkits write to the MBR to gain persistence at a level below the operating system.
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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
1PowerShell
1Scheduled Task/Job
1System Services
2Service Execution
2Persistence
Boot or Logon Autostart Execution
3Registry Run Keys / Startup Folder
3Browser Extensions
1Create or Modify System Process
3Windows Service
3Event Triggered Execution
1Change Default File Association
1Pre-OS Boot
1Bootkit
1Scheduled Task/Job
1Privilege Escalation
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Boot or Logon Autostart Execution
3Registry Run Keys / Startup Folder
3Create or Modify System Process
3Windows Service
3Event Triggered Execution
1Change Default File Association
1Scheduled Task/Job
1Defense Evasion
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Impair Defenses
2Disable or Modify Tools
1Modify Registry
8Pre-OS Boot
1Bootkit
1Subvert Trust Controls
1Install Root Certificate
1Virtualization/Sandbox Evasion
2