Analysis
-
max time kernel
103s -
max time network
106s -
platform
windows10-2004_x64 -
resource
win10v2004-20240709-en -
resource tags
-
submitted
24-07-2024 23:36
General
-
Target
3198855be37e8b8300dfee1182a774d0N.exe
-
Size
784KB
-
MD5
3198855be37e8b8300dfee1182a774d0
-
SHA1
b47d7b51322f4b40cdccfca8db2825d2a9612e46
-
SHA256
3a303cda66f8030434b0b25938e6d49d52c66c9a65b6159050412f3c09eb9013
-
SHA512
7be8f07bce9fe85de04e54e9cfde2b1683691abe6e5069eca718c1bd13d1aa8df06ecaf9cabaca63f49c2a7355cc4faed5ac38d02e8310eb377b562d88203d1f
-
SSDEEP
12288:+qnO8YpD1oOJp+Ce1PSiG2jfIBoI5DyDwYMDxFesH0ioBw7oKk2:++ORToOWSi5gBoS4wYUJ0eo2
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 5 IoCs
This typically indicates the parent process was compromised via an exploit or macro.
-
UAC bypass 3 TTPs 3 IoCs
-
DCRat payload 2 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 5 IoCs
-
Checks whether UAC is enabled 1 TTPs 2 IoCs
-
Drops file in System32 directory 8 IoCs
-
Drops file in Windows directory 8 IoCs
-
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
-
Modifies registry class 1 IoCs
-
Scheduled Task/Job: Scheduled Task 1 TTPs 5 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
-
Suspicious behavior: EnumeratesProcesses 17 IoCs
-
Suspicious use of AdjustPrivilegeToken 2 IoCs
-
Suspicious use of WriteProcessMemory 2 IoCs
-
System policy modification 1 TTPs 3 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\3198855be37e8b8300dfee1182a774d0N.exe"C:\Users\Admin\AppData\Local\Temp\3198855be37e8b8300dfee1182a774d0N.exe"1⤵
- UAC bypass
- Checks computer location settings
- Adds Run key to start application
- Checks whether UAC is enabled
- Drops file in System32 directory
- Drops file in Windows directory
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- System policy modification
-
C:\Windows\SysmonDrv\explorer.exe"C:\Windows\SysmonDrv\explorer.exe"2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
-
C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "SearchApp" /sc ONLOGON /tr "'C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\DefaultSettings\SearchApp.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
-
C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "explorer" /sc ONLOGON /tr "'C:\Windows\SysmonDrv\explorer.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
-
C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "spoolsv" /sc ONLOGON /tr "'C:\PerfLogs\spoolsv.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
-
C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "spoolsv" /sc ONLOGON /tr "'C:\Windows\System32\EnterpriseAPNCsp\spoolsv.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
-
C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "dwm" /sc ONLOGON /tr "'C:\Windows\System32\slcext\dwm.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
Network
MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Scheduled Task/Job
1Scheduled Task
1Privilege Escalation
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Scheduled Task/Job
1Scheduled Task
1Replay Monitor
Loading Replay Monitor...
Downloads
-
Filesize
784KB
MD53198855be37e8b8300dfee1182a774d0
SHA1b47d7b51322f4b40cdccfca8db2825d2a9612e46
SHA2563a303cda66f8030434b0b25938e6d49d52c66c9a65b6159050412f3c09eb9013
SHA5127be8f07bce9fe85de04e54e9cfde2b1683691abe6e5069eca718c1bd13d1aa8df06ecaf9cabaca63f49c2a7355cc4faed5ac38d02e8310eb377b562d88203d1f
-
Filesize
32KB
-
Filesize
8KB
-
Filesize
32KB
-
Filesize
32KB
-
Filesize
64KB
-
Filesize
32KB
-
Filesize
48KB
-
Filesize
40KB
-
Filesize
40KB
-
Filesize
32KB
-
Filesize
32KB
-
Filesize
32KB
-
Filesize
10.8MB
-
Filesize
10.8MB
-
Filesize
32KB
-
Filesize
32KB
-
Filesize
48KB
-
Filesize
32KB
-
Filesize
32KB
-
Filesize
32KB
-
Filesize
32KB
-
Filesize
32KB
-
Filesize
10.8MB
-
Filesize
10.8MB
-
Filesize
10.8MB
-
Filesize
808KB
-
Filesize
10.8MB
-
Filesize
32KB