Analysis
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max time kernel
121s -
max time network
149s -
platform
windows7_x64 -
resource
win7-20240903-en -
resource tags
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submitted
15-01-2025 19:53
General
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Target
0bc818b4d36da5b093c5ab3c63ec76e9b7d8526ef3d80ecfabcabca8ad00daae.exe
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Size
2.7MB
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MD5
998c94eae1bc93bee0f180c355a01bbd
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SHA1
8bec6f30ced392705452a00f290930d2d721d596
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SHA256
0bc818b4d36da5b093c5ab3c63ec76e9b7d8526ef3d80ecfabcabca8ad00daae
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SHA512
b9569f5d405bae77de2aaaf08d68a4971cb45f7c4786d8999ed4666e8cc70acca015aa8d6674fb356cc76741be3c532f86d5b2b753ceaeb91c315fe2ef5560e2
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SSDEEP
49152:sDkZWCF2T8juUND4YQxZzfllulb0fnyN27mEGnjYEhQ+QK:N4CF2sjELplCbmyN27PxEhQ+
Malware Config
Signatures
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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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Dcrat family
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Process spawned unexpected child process 9 IoCs
This typically indicates the parent process was compromised via an exploit or macro.
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UAC bypass 3 TTPs 6 IoCs
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DCRat payload 3 IoCs
Detects payload of DCRat, commonly dropped by NSIS installers.
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Executes dropped EXE 1 IoCs
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Checks whether UAC is enabled 1 TTPs 4 IoCs
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Drops file in Program Files directory 5 IoCs
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Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Scheduled Task/Job: Scheduled Task 1 TTPs 9 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
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Suspicious behavior: EnumeratesProcesses 10 IoCs
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Suspicious behavior: GetForegroundWindowSpam 1 IoCs
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Suspicious use of AdjustPrivilegeToken 2 IoCs
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Suspicious use of WriteProcessMemory 3 IoCs
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System policy modification 1 TTPs 6 IoCs
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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
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C:\Users\Admin\AppData\Local\Temp\0bc818b4d36da5b093c5ab3c63ec76e9b7d8526ef3d80ecfabcabca8ad00daae.exe"C:\Users\Admin\AppData\Local\Temp\0bc818b4d36da5b093c5ab3c63ec76e9b7d8526ef3d80ecfabcabca8ad00daae.exe"1⤵
- UAC bypass
- Checks whether UAC is enabled
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- System policy modification
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C:\MSOCache\All Users\taskhost.exe"C:\MSOCache\All Users\taskhost.exe"2⤵
- UAC bypass
- Executes dropped EXE
- Checks whether UAC is enabled
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- System policy modification
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "taskhostt" /sc MINUTE /mo 10 /tr "'C:\Program Files\Windows Mail\es-ES\taskhost.exe'" /f1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "taskhost" /sc ONLOGON /tr "'C:\Program Files\Windows Mail\es-ES\taskhost.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "taskhostt" /sc MINUTE /mo 8 /tr "'C:\Program Files\Windows Mail\es-ES\taskhost.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "taskhostt" /sc MINUTE /mo 8 /tr "'C:\MSOCache\All Users\taskhost.exe'" /f1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "taskhost" /sc ONLOGON /tr "'C:\MSOCache\All Users\taskhost.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "taskhostt" /sc MINUTE /mo 8 /tr "'C:\MSOCache\All Users\taskhost.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "WmiPrvSEW" /sc MINUTE /mo 8 /tr "'C:\MSOCache\All Users\{90140000-00A1-0409-0000-0000000FF1CE}-C\WmiPrvSE.exe'" /f1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "WmiPrvSE" /sc ONLOGON /tr "'C:\MSOCache\All Users\{90140000-00A1-0409-0000-0000000FF1CE}-C\WmiPrvSE.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "WmiPrvSEW" /sc MINUTE /mo 8 /tr "'C:\MSOCache\All Users\{90140000-00A1-0409-0000-0000000FF1CE}-C\WmiPrvSE.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
Network
MITRE ATT&CK Enterprise v15
Privilege Escalation
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Scheduled Task/Job
1Scheduled Task
1Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
2.7MB
MD5998c94eae1bc93bee0f180c355a01bbd
SHA18bec6f30ced392705452a00f290930d2d721d596
SHA2560bc818b4d36da5b093c5ab3c63ec76e9b7d8526ef3d80ecfabcabca8ad00daae
SHA512b9569f5d405bae77de2aaaf08d68a4971cb45f7c4786d8999ed4666e8cc70acca015aa8d6674fb356cc76741be3c532f86d5b2b753ceaeb91c315fe2ef5560e2
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Filesize
72KB
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Filesize
48KB
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Filesize
32KB
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Filesize
112KB
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Filesize
64KB
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Filesize
32KB
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Filesize
88KB
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Filesize
32KB
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Filesize
40KB
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Filesize
32KB
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Filesize
56KB
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Filesize
4KB
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Filesize
344KB
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Filesize
32KB
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Filesize
48KB
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Filesize
56KB
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Filesize
9.9MB
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Filesize
40KB
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Filesize
48KB
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Filesize
2.7MB
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Filesize
9.9MB
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Filesize
2.7MB
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Filesize
72KB