Analysis
- max time kernel
147s - max time network
150s - platform
windows10-2004_x64 - resource
win10v2004-20231215-en - resource tags
- submitted
18/01/2024, 02:00
General
- Target 60ee8d1f805ad1ea592617cd83018fde.exe
- Size 1.1MB
- Sample240118-cff15abcd5
- SHA256 5e01f03ba0331e636f398b925a05912fa7d5a2ead25f90677edf97b56e1aec0c
Malware Config
Signatures
- DcRat
DarkCrystal(DC) is a new .NET RAT active since June 2019 capable of loading additional plugins.
- Process spawned unexpected child process 3 IoCs
This typically indicates the parent process was compromised via an exploit or macro.
- DCRat payload 4 IoCs
Detects payload of DCRat, commonly dropped by NSIS installers.
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Executes dropped EXE 1 IoCs
- Adds Run key to start application 2 TTPs 3 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Creates scheduled task(s) 1 TTPs 3 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious behavior: EnumeratesProcesses 2 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of WriteProcessMemory 2 IoCs
- Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
Processes
-
C:\Users\Admin\AppData\Local\Temp\60ee8d1f805ad1ea592617cd83018fde.exe"C:\Users\Admin\AppData\Local\Temp\60ee8d1f805ad1ea592617cd83018fde.exe"1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\odt\60ee8d1f805ad1ea592617cd83018fde.exe"C:\odt\60ee8d1f805ad1ea592617cd83018fde.exe"2⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
-
C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "60ee8d1f805ad1ea592617cd83018fde" /sc ONLOGON /tr "'C:\odt\60ee8d1f805ad1ea592617cd83018fde.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
-
C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "smss" /sc ONLOGON /tr "'C:\Documents and Settings\smss.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
-
C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "SppExtComObj" /sc ONLOGON /tr "'C:\odt\SppExtComObj.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
60ee8d1f805ad1ea592617cd83018fde.exe.log
60ee8d1f805ad1ea592617cd83018fde.exe
60ee8d1f805ad1ea592617cd83018fde.exe
60ee8d1f805ad1ea592617cd83018fde.exe
memory/876-0-0x0000000000E20000-0x0000000000F4A000-memory.dmp
memory/876-1-0x00007FFBDFB50000-0x00007FFBE0611000-memory.dmp
memory/876-2-0x000000001BFC0000-0x000000001BFD0000-memory.dmp
memory/876-21-0x00007FFBDFB50000-0x00007FFBE0611000-memory.dmp
memory/1124-22-0x00007FFBDFB50000-0x00007FFBE0611000-memory.dmp
memory/1124-23-0x000000001BDE0000-0x000000001BDF0000-memory.dmp
memory/1124-24-0x00007FFBDFB50000-0x00007FFBE0611000-memory.dmp