Analysis
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max time kernel
151s -
max time network
192s -
platform
windows7_x64 -
resource
win7-20221111-en -
resource tags
arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system -
submitted
26-11-2022 17:55
Behavioral task
behavioral1
Sample
42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exe
Resource
win7-20221111-en
General
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Target
42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exe
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Size
658KB
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MD5
41e39fc0ab363cd35fff3594134777b4
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SHA1
ccef504edaef4c92d3586a1d269506a1a9bb181a
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SHA256
42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad
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SHA512
bfe954804f36438292f8e8804824823cee39be90e8d683a9827b6de466cf563b0340a24d3af8b91d2ce6cb031caac0df32394c55c72f90a5361c96858c9b1042
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SSDEEP
12288:+9HFJ9rJxRX1uVVjoaWSoynxdO1FVBaOiRZTERfIhNkNCCLo9Ek5C/ha:KZ1xuVVjfFoynPaVBUR8f+kN10EB4
Malware Config
Extracted
darkcomet
HF
ambro.ddns.net:1604
DC_MUTEX-FHGVDQZ
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InstallPath
MSDCSC\msdcsc.exe
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gencode
u7a8sNW0Gw40
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install
true
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offline_keylogger
true
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persistence
false
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reg_key
MicroUpdate
Signatures
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Modifies WinLogon for persistence 2 TTPs 1 IoCs
Processes:
42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe" 42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exe -
Executes dropped EXE 1 IoCs
Processes:
msdcsc.exepid process 1464 msdcsc.exe -
Sets file to hidden 1 TTPs 2 IoCs
Modifies file attributes to stop it showing in Explorer etc.
Processes:
attrib.exeattrib.exepid process 320 attrib.exe 676 attrib.exe -
Deletes itself 1 IoCs
Processes:
notepad.exepid process 948 notepad.exe -
Loads dropped DLL 2 IoCs
Processes:
42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exepid process 1228 42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exe 1228 42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exe -
Adds Run key to start application 2 TTPs 1 IoCs
Processes:
42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe" 42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.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:
msdcsc.exepid process 1464 msdcsc.exe -
Suspicious use of AdjustPrivilegeToken 46 IoCs
Processes:
42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exemsdcsc.exedescription pid process Token: SeIncreaseQuotaPrivilege 1228 42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exe Token: SeSecurityPrivilege 1228 42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exe Token: SeTakeOwnershipPrivilege 1228 42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exe Token: SeLoadDriverPrivilege 1228 42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exe Token: SeSystemProfilePrivilege 1228 42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exe Token: SeSystemtimePrivilege 1228 42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exe Token: SeProfSingleProcessPrivilege 1228 42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exe Token: SeIncBasePriorityPrivilege 1228 42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exe Token: SeCreatePagefilePrivilege 1228 42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exe Token: SeBackupPrivilege 1228 42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exe Token: SeRestorePrivilege 1228 42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exe Token: SeShutdownPrivilege 1228 42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exe Token: SeDebugPrivilege 1228 42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exe Token: SeSystemEnvironmentPrivilege 1228 42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exe Token: SeChangeNotifyPrivilege 1228 42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exe Token: SeRemoteShutdownPrivilege 1228 42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exe Token: SeUndockPrivilege 1228 42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exe Token: SeManageVolumePrivilege 1228 42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exe Token: SeImpersonatePrivilege 1228 42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exe Token: SeCreateGlobalPrivilege 1228 42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exe Token: 33 1228 42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exe Token: 34 1228 42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exe Token: 35 1228 42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exe Token: SeIncreaseQuotaPrivilege 1464 msdcsc.exe Token: SeSecurityPrivilege 1464 msdcsc.exe Token: SeTakeOwnershipPrivilege 1464 msdcsc.exe Token: SeLoadDriverPrivilege 1464 msdcsc.exe Token: SeSystemProfilePrivilege 1464 msdcsc.exe Token: SeSystemtimePrivilege 1464 msdcsc.exe Token: SeProfSingleProcessPrivilege 1464 msdcsc.exe Token: SeIncBasePriorityPrivilege 1464 msdcsc.exe Token: SeCreatePagefilePrivilege 1464 msdcsc.exe Token: SeBackupPrivilege 1464 msdcsc.exe Token: SeRestorePrivilege 1464 msdcsc.exe Token: SeShutdownPrivilege 1464 msdcsc.exe Token: SeDebugPrivilege 1464 msdcsc.exe Token: SeSystemEnvironmentPrivilege 1464 msdcsc.exe Token: SeChangeNotifyPrivilege 1464 msdcsc.exe Token: SeRemoteShutdownPrivilege 1464 msdcsc.exe Token: SeUndockPrivilege 1464 msdcsc.exe Token: SeManageVolumePrivilege 1464 msdcsc.exe Token: SeImpersonatePrivilege 1464 msdcsc.exe Token: SeCreateGlobalPrivilege 1464 msdcsc.exe Token: 33 1464 msdcsc.exe Token: 34 1464 msdcsc.exe Token: 35 1464 msdcsc.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
msdcsc.exepid process 1464 msdcsc.exe -
Suspicious use of WriteProcessMemory 61 IoCs
Processes:
42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.execmd.execmd.exemsdcsc.exedescription pid process target process PID 1228 wrote to memory of 2024 1228 42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exe cmd.exe PID 1228 wrote to memory of 2024 1228 42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exe cmd.exe PID 1228 wrote to memory of 2024 1228 42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exe cmd.exe PID 1228 wrote to memory of 2024 1228 42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exe cmd.exe PID 1228 wrote to memory of 2008 1228 42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exe cmd.exe PID 1228 wrote to memory of 2008 1228 42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exe cmd.exe PID 1228 wrote to memory of 2008 1228 42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exe cmd.exe PID 1228 wrote to memory of 2008 1228 42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exe cmd.exe PID 2008 wrote to memory of 320 2008 cmd.exe attrib.exe PID 2008 wrote to memory of 320 2008 cmd.exe attrib.exe PID 2008 wrote to memory of 320 2008 cmd.exe attrib.exe PID 2008 wrote to memory of 320 2008 cmd.exe attrib.exe PID 2024 wrote to memory of 676 2024 cmd.exe attrib.exe PID 2024 wrote to memory of 676 2024 cmd.exe attrib.exe PID 2024 wrote to memory of 676 2024 cmd.exe attrib.exe PID 2024 wrote to memory of 676 2024 cmd.exe attrib.exe PID 1228 wrote to memory of 948 1228 42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exe notepad.exe PID 1228 wrote to memory of 948 1228 42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exe notepad.exe PID 1228 wrote to memory of 948 1228 42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exe notepad.exe PID 1228 wrote to memory of 948 1228 42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exe notepad.exe PID 1228 wrote to memory of 948 1228 42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exe notepad.exe PID 1228 wrote to memory of 948 1228 42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exe notepad.exe PID 1228 wrote to memory of 948 1228 42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exe notepad.exe PID 1228 wrote to memory of 948 1228 42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exe notepad.exe PID 1228 wrote to memory of 948 1228 42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exe notepad.exe PID 1228 wrote to memory of 948 1228 42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exe notepad.exe PID 1228 wrote to memory of 948 1228 42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exe notepad.exe PID 1228 wrote to memory of 948 1228 42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exe notepad.exe PID 1228 wrote to memory of 948 1228 42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exe notepad.exe PID 1228 wrote to memory of 948 1228 42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exe notepad.exe PID 1228 wrote to memory of 948 1228 42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exe notepad.exe PID 1228 wrote to memory of 948 1228 42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exe notepad.exe PID 1228 wrote to memory of 948 1228 42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exe notepad.exe PID 1228 wrote to memory of 948 1228 42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exe notepad.exe PID 1228 wrote to memory of 1464 1228 42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exe msdcsc.exe PID 1228 wrote to memory of 1464 1228 42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exe msdcsc.exe PID 1228 wrote to memory of 1464 1228 42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exe msdcsc.exe PID 1228 wrote to memory of 1464 1228 42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exe msdcsc.exe PID 1464 wrote to memory of 608 1464 msdcsc.exe notepad.exe PID 1464 wrote to memory of 608 1464 msdcsc.exe notepad.exe PID 1464 wrote to memory of 608 1464 msdcsc.exe notepad.exe PID 1464 wrote to memory of 608 1464 msdcsc.exe notepad.exe PID 1464 wrote to memory of 608 1464 msdcsc.exe notepad.exe PID 1464 wrote to memory of 608 1464 msdcsc.exe notepad.exe PID 1464 wrote to memory of 608 1464 msdcsc.exe notepad.exe PID 1464 wrote to memory of 608 1464 msdcsc.exe notepad.exe PID 1464 wrote to memory of 608 1464 msdcsc.exe notepad.exe PID 1464 wrote to memory of 608 1464 msdcsc.exe notepad.exe PID 1464 wrote to memory of 608 1464 msdcsc.exe notepad.exe PID 1464 wrote to memory of 608 1464 msdcsc.exe notepad.exe PID 1464 wrote to memory of 608 1464 msdcsc.exe notepad.exe PID 1464 wrote to memory of 608 1464 msdcsc.exe notepad.exe PID 1464 wrote to memory of 608 1464 msdcsc.exe notepad.exe PID 1464 wrote to memory of 608 1464 msdcsc.exe notepad.exe PID 1464 wrote to memory of 608 1464 msdcsc.exe notepad.exe PID 1464 wrote to memory of 608 1464 msdcsc.exe notepad.exe PID 1464 wrote to memory of 608 1464 msdcsc.exe notepad.exe PID 1464 wrote to memory of 608 1464 msdcsc.exe notepad.exe PID 1464 wrote to memory of 608 1464 msdcsc.exe notepad.exe PID 1464 wrote to memory of 608 1464 msdcsc.exe notepad.exe PID 1464 wrote to memory of 608 1464 msdcsc.exe notepad.exe -
Views/modifies file attributes 1 TTPs 2 IoCs
Processes:
attrib.exeattrib.exepid process 320 attrib.exe 676 attrib.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exe"C:\Users\Admin\AppData\Local\Temp\42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exe"1⤵
- Modifies WinLogon for persistence
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exe" +s +h2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\attrib.exeattrib "C:\Users\Admin\AppData\Local\Temp\42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exe" +s +h3⤵
- Sets file to hidden
- Views/modifies file attributes
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp" +s +h2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\attrib.exeattrib "C:\Users\Admin\AppData\Local\Temp" +s +h3⤵
- Sets file to hidden
- Views/modifies file attributes
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C:\Windows\SysWOW64\notepad.exenotepad2⤵
- Deletes itself
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C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"2⤵
- Executes dropped EXE
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\notepad.exenotepad3⤵
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\Documents\MSDCSC\msdcsc.exeFilesize
658KB
MD541e39fc0ab363cd35fff3594134777b4
SHA1ccef504edaef4c92d3586a1d269506a1a9bb181a
SHA25642a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad
SHA512bfe954804f36438292f8e8804824823cee39be90e8d683a9827b6de466cf563b0340a24d3af8b91d2ce6cb031caac0df32394c55c72f90a5361c96858c9b1042
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C:\Users\Admin\Documents\MSDCSC\msdcsc.exeFilesize
658KB
MD541e39fc0ab363cd35fff3594134777b4
SHA1ccef504edaef4c92d3586a1d269506a1a9bb181a
SHA25642a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad
SHA512bfe954804f36438292f8e8804824823cee39be90e8d683a9827b6de466cf563b0340a24d3af8b91d2ce6cb031caac0df32394c55c72f90a5361c96858c9b1042
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\Users\Admin\Documents\MSDCSC\msdcsc.exeFilesize
658KB
MD541e39fc0ab363cd35fff3594134777b4
SHA1ccef504edaef4c92d3586a1d269506a1a9bb181a
SHA25642a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad
SHA512bfe954804f36438292f8e8804824823cee39be90e8d683a9827b6de466cf563b0340a24d3af8b91d2ce6cb031caac0df32394c55c72f90a5361c96858c9b1042
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\Users\Admin\Documents\MSDCSC\msdcsc.exeFilesize
658KB
MD541e39fc0ab363cd35fff3594134777b4
SHA1ccef504edaef4c92d3586a1d269506a1a9bb181a
SHA25642a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad
SHA512bfe954804f36438292f8e8804824823cee39be90e8d683a9827b6de466cf563b0340a24d3af8b91d2ce6cb031caac0df32394c55c72f90a5361c96858c9b1042
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memory/320-57-0x0000000000000000-mapping.dmp
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memory/608-67-0x0000000000000000-mapping.dmp
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memory/676-58-0x0000000000000000-mapping.dmp
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memory/948-59-0x0000000000000000-mapping.dmp
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memory/1228-54-0x00000000767F1000-0x00000000767F3000-memory.dmpFilesize
8KB
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memory/1464-63-0x0000000000000000-mapping.dmp
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memory/2008-56-0x0000000000000000-mapping.dmp
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memory/2024-55-0x0000000000000000-mapping.dmp