Analysis
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max time kernel
145s -
max time network
145s -
platform
windows10_x64 -
resource
win10v20210408 -
submitted
29-04-2021 21:58
Static task
static1
Behavioral task
behavioral1
Sample
server.exe
Resource
win7v20210410
Behavioral task
behavioral2
Sample
server.exe
Resource
win10v20210408
General
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Target
server.exe
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Size
627KB
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MD5
ccadb01dd1b49d0feb520c6bf7f819ef
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SHA1
f0a859f869fe2c4c01541f7777be40b97fa8820d
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SHA256
399b5ca1eee21d07a146800fbccb360c524171237b49b1fa415fbabd0c6b92e8
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SHA512
82bbcdee9acf630fc8e1f15bafec31e2d7f6ac6f998006a4d64ea2b13c7d7a78f2fb51fa6f652ad65dab7e191fd8b17cda3b570ef0101374e1d1b0682932d77c
Malware Config
Signatures
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DarkTrack Payload 2 IoCs
Processes:
resource yara_rule C:\Users\Admin\AppData\Roaming\DtServ32.exe family_darktrack C:\Users\Admin\AppData\Roaming\DtServ32.exe family_darktrack -
Executes dropped EXE 1 IoCs
Processes:
DtServ32.exepid process 3356 DtServ32.exe -
Adds Run key to start application 2 TTPs 1 IoCs
Processes:
notepad.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Software\Microsoft\Windows\CurrentVersion\Run\DtServ32sm.exe = "C:\\Users\\Admin\\AppData\\Roaming\\DtServ32.exe" notepad.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Suspicious behavior: GetForegroundWindowSpam 1 IoCs
Processes:
DtServ32.exepid process 3356 DtServ32.exe -
Suspicious use of WriteProcessMemory 29 IoCs
Processes:
server.exeDtServ32.exedescription pid process target process PID 656 wrote to memory of 3080 656 server.exe cmd.exe PID 656 wrote to memory of 3080 656 server.exe cmd.exe PID 656 wrote to memory of 3080 656 server.exe cmd.exe PID 656 wrote to memory of 3356 656 server.exe DtServ32.exe PID 656 wrote to memory of 3356 656 server.exe DtServ32.exe PID 656 wrote to memory of 3356 656 server.exe DtServ32.exe PID 3356 wrote to memory of 2028 3356 DtServ32.exe notepad.exe PID 3356 wrote to memory of 2028 3356 DtServ32.exe notepad.exe PID 3356 wrote to memory of 2028 3356 DtServ32.exe notepad.exe PID 3356 wrote to memory of 2028 3356 DtServ32.exe notepad.exe PID 3356 wrote to memory of 2028 3356 DtServ32.exe notepad.exe PID 3356 wrote to memory of 2028 3356 DtServ32.exe notepad.exe PID 3356 wrote to memory of 2028 3356 DtServ32.exe notepad.exe PID 3356 wrote to memory of 2028 3356 DtServ32.exe notepad.exe PID 3356 wrote to memory of 2028 3356 DtServ32.exe notepad.exe PID 3356 wrote to memory of 2028 3356 DtServ32.exe notepad.exe PID 3356 wrote to memory of 2028 3356 DtServ32.exe notepad.exe PID 3356 wrote to memory of 2028 3356 DtServ32.exe notepad.exe PID 3356 wrote to memory of 2028 3356 DtServ32.exe notepad.exe PID 3356 wrote to memory of 2028 3356 DtServ32.exe notepad.exe PID 3356 wrote to memory of 2028 3356 DtServ32.exe notepad.exe PID 3356 wrote to memory of 2028 3356 DtServ32.exe notepad.exe PID 3356 wrote to memory of 2028 3356 DtServ32.exe notepad.exe PID 3356 wrote to memory of 2028 3356 DtServ32.exe notepad.exe PID 3356 wrote to memory of 2028 3356 DtServ32.exe notepad.exe PID 3356 wrote to memory of 2028 3356 DtServ32.exe notepad.exe PID 3356 wrote to memory of 2028 3356 DtServ32.exe notepad.exe PID 3356 wrote to memory of 2028 3356 DtServ32.exe notepad.exe PID 3356 wrote to memory of 2028 3356 DtServ32.exe notepad.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\server.exe"C:\Users\Admin\AppData\Local\Temp\server.exe"1⤵
- Suspicious use of WriteProcessMemory
PID:656 -
C:\Windows\SysWOW64\cmd.exe"C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\server.exe >> NUL2⤵PID:3080
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C:\Users\Admin\AppData\Roaming\DtServ32.exe"C:\Users\Admin\AppData\Roaming\DtServ32.exe"2⤵
- Executes dropped EXE
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:3356 -
C:\Windows\SysWOW64\notepad.exenotepad3⤵
- Adds Run key to start application
PID:2028
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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MD5
ccadb01dd1b49d0feb520c6bf7f819ef
SHA1f0a859f869fe2c4c01541f7777be40b97fa8820d
SHA256399b5ca1eee21d07a146800fbccb360c524171237b49b1fa415fbabd0c6b92e8
SHA51282bbcdee9acf630fc8e1f15bafec31e2d7f6ac6f998006a4d64ea2b13c7d7a78f2fb51fa6f652ad65dab7e191fd8b17cda3b570ef0101374e1d1b0682932d77c
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MD5
ccadb01dd1b49d0feb520c6bf7f819ef
SHA1f0a859f869fe2c4c01541f7777be40b97fa8820d
SHA256399b5ca1eee21d07a146800fbccb360c524171237b49b1fa415fbabd0c6b92e8
SHA51282bbcdee9acf630fc8e1f15bafec31e2d7f6ac6f998006a4d64ea2b13c7d7a78f2fb51fa6f652ad65dab7e191fd8b17cda3b570ef0101374e1d1b0682932d77c