Analysis
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max time kernel
151s -
max time network
154s -
platform
windows7_x64 -
resource
win7-20221111-en -
resource tags
arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system -
submitted
30-01-2023 04:29
Behavioral task
behavioral1
Sample
ad87e5a9500e397571096c8c91289ab3b0062476bfb2b598e8f13bca800b5312.exe
Resource
win7-20221111-en
General
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Target
ad87e5a9500e397571096c8c91289ab3b0062476bfb2b598e8f13bca800b5312.exe
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Size
251KB
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MD5
1884c58a039697b2b792929dfa2354b0
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SHA1
0dbf1786a0913b67545127ecc8dd82778f3f66d0
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SHA256
ad87e5a9500e397571096c8c91289ab3b0062476bfb2b598e8f13bca800b5312
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SHA512
7d245aa06ae838788de31deb6589afff73ce78e64983d2a90fcfc14efca2f3dd680f4cdebc8b6748130ff1aa6eb2229b2cde220dd26cbf644a783f2f098e0761
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SSDEEP
6144:pcNYS996KFifeVjBpeExgVTFSXFoMc5RhCaL37Q:pcW7KEZlPzCy37
Malware Config
Extracted
darkcomet
Guest16
jemes.no-ip.biz:1604
DC_MUTEX-8T3MCEU
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InstallPath
MSDCSC\msdcsc.exe
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gencode
zhwyfBmUvgRd
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install
true
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offline_keylogger
true
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persistence
true
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reg_key
MicroUpdate
Signatures
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Modifies WinLogon for persistence 2 TTPs 1 IoCs
Processes:
ad87e5a9500e397571096c8c91289ab3b0062476bfb2b598e8f13bca800b5312.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Windows\\system32\\MSDCSC\\msdcsc.exe" ad87e5a9500e397571096c8c91289ab3b0062476bfb2b598e8f13bca800b5312.exe -
Modifies firewall policy service 2 TTPs 3 IoCs
Processes:
msdcsc.exedescription ioc process Key created \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile msdcsc.exe Set value (int) \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\EnableFirewall = "0" msdcsc.exe Set value (int) \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DisableNotifications = "0" msdcsc.exe -
Executes dropped EXE 1 IoCs
Processes:
msdcsc.exepid process 2032 msdcsc.exe -
Processes:
resource yara_rule behavioral1/memory/2024-55-0x0000000000400000-0x00000000004B7000-memory.dmp upx \Windows\SysWOW64\MSDCSC\msdcsc.exe upx \Windows\SysWOW64\MSDCSC\msdcsc.exe upx C:\Windows\SysWOW64\MSDCSC\msdcsc.exe upx C:\Windows\SysWOW64\MSDCSC\msdcsc.exe upx behavioral1/memory/2032-65-0x0000000000400000-0x00000000004B7000-memory.dmp upx behavioral1/memory/2024-66-0x0000000000400000-0x00000000004B7000-memory.dmp upx behavioral1/memory/2032-67-0x0000000000400000-0x00000000004B7000-memory.dmp upx -
Loads dropped DLL 2 IoCs
Processes:
ad87e5a9500e397571096c8c91289ab3b0062476bfb2b598e8f13bca800b5312.exepid process 2024 ad87e5a9500e397571096c8c91289ab3b0062476bfb2b598e8f13bca800b5312.exe 2024 ad87e5a9500e397571096c8c91289ab3b0062476bfb2b598e8f13bca800b5312.exe -
Adds Run key to start application 2 TTPs 2 IoCs
Processes:
ad87e5a9500e397571096c8c91289ab3b0062476bfb2b598e8f13bca800b5312.exemsdcsc.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Windows\\system32\\MSDCSC\\msdcsc.exe" ad87e5a9500e397571096c8c91289ab3b0062476bfb2b598e8f13bca800b5312.exe Set value (str) \REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Windows\\system32\\MSDCSC\\msdcsc.exe" msdcsc.exe -
Drops file in System32 directory 3 IoCs
Processes:
ad87e5a9500e397571096c8c91289ab3b0062476bfb2b598e8f13bca800b5312.exedescription ioc process File created C:\Windows\SysWOW64\MSDCSC\msdcsc.exe ad87e5a9500e397571096c8c91289ab3b0062476bfb2b598e8f13bca800b5312.exe File opened for modification C:\Windows\SysWOW64\MSDCSC\msdcsc.exe ad87e5a9500e397571096c8c91289ab3b0062476bfb2b598e8f13bca800b5312.exe File opened for modification C:\Windows\SysWOW64\MSDCSC\ ad87e5a9500e397571096c8c91289ab3b0062476bfb2b598e8f13bca800b5312.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Suspicious use of AdjustPrivilegeToken 46 IoCs
Processes:
ad87e5a9500e397571096c8c91289ab3b0062476bfb2b598e8f13bca800b5312.exemsdcsc.exedescription pid process Token: SeIncreaseQuotaPrivilege 2024 ad87e5a9500e397571096c8c91289ab3b0062476bfb2b598e8f13bca800b5312.exe Token: SeSecurityPrivilege 2024 ad87e5a9500e397571096c8c91289ab3b0062476bfb2b598e8f13bca800b5312.exe Token: SeTakeOwnershipPrivilege 2024 ad87e5a9500e397571096c8c91289ab3b0062476bfb2b598e8f13bca800b5312.exe Token: SeLoadDriverPrivilege 2024 ad87e5a9500e397571096c8c91289ab3b0062476bfb2b598e8f13bca800b5312.exe Token: SeSystemProfilePrivilege 2024 ad87e5a9500e397571096c8c91289ab3b0062476bfb2b598e8f13bca800b5312.exe Token: SeSystemtimePrivilege 2024 ad87e5a9500e397571096c8c91289ab3b0062476bfb2b598e8f13bca800b5312.exe Token: SeProfSingleProcessPrivilege 2024 ad87e5a9500e397571096c8c91289ab3b0062476bfb2b598e8f13bca800b5312.exe Token: SeIncBasePriorityPrivilege 2024 ad87e5a9500e397571096c8c91289ab3b0062476bfb2b598e8f13bca800b5312.exe Token: SeCreatePagefilePrivilege 2024 ad87e5a9500e397571096c8c91289ab3b0062476bfb2b598e8f13bca800b5312.exe Token: SeBackupPrivilege 2024 ad87e5a9500e397571096c8c91289ab3b0062476bfb2b598e8f13bca800b5312.exe Token: SeRestorePrivilege 2024 ad87e5a9500e397571096c8c91289ab3b0062476bfb2b598e8f13bca800b5312.exe Token: SeShutdownPrivilege 2024 ad87e5a9500e397571096c8c91289ab3b0062476bfb2b598e8f13bca800b5312.exe Token: SeDebugPrivilege 2024 ad87e5a9500e397571096c8c91289ab3b0062476bfb2b598e8f13bca800b5312.exe Token: SeSystemEnvironmentPrivilege 2024 ad87e5a9500e397571096c8c91289ab3b0062476bfb2b598e8f13bca800b5312.exe Token: SeChangeNotifyPrivilege 2024 ad87e5a9500e397571096c8c91289ab3b0062476bfb2b598e8f13bca800b5312.exe Token: SeRemoteShutdownPrivilege 2024 ad87e5a9500e397571096c8c91289ab3b0062476bfb2b598e8f13bca800b5312.exe Token: SeUndockPrivilege 2024 ad87e5a9500e397571096c8c91289ab3b0062476bfb2b598e8f13bca800b5312.exe Token: SeManageVolumePrivilege 2024 ad87e5a9500e397571096c8c91289ab3b0062476bfb2b598e8f13bca800b5312.exe Token: SeImpersonatePrivilege 2024 ad87e5a9500e397571096c8c91289ab3b0062476bfb2b598e8f13bca800b5312.exe Token: SeCreateGlobalPrivilege 2024 ad87e5a9500e397571096c8c91289ab3b0062476bfb2b598e8f13bca800b5312.exe Token: 33 2024 ad87e5a9500e397571096c8c91289ab3b0062476bfb2b598e8f13bca800b5312.exe Token: 34 2024 ad87e5a9500e397571096c8c91289ab3b0062476bfb2b598e8f13bca800b5312.exe Token: 35 2024 ad87e5a9500e397571096c8c91289ab3b0062476bfb2b598e8f13bca800b5312.exe Token: SeIncreaseQuotaPrivilege 2032 msdcsc.exe Token: SeSecurityPrivilege 2032 msdcsc.exe Token: SeTakeOwnershipPrivilege 2032 msdcsc.exe Token: SeLoadDriverPrivilege 2032 msdcsc.exe Token: SeSystemProfilePrivilege 2032 msdcsc.exe Token: SeSystemtimePrivilege 2032 msdcsc.exe Token: SeProfSingleProcessPrivilege 2032 msdcsc.exe Token: SeIncBasePriorityPrivilege 2032 msdcsc.exe Token: SeCreatePagefilePrivilege 2032 msdcsc.exe Token: SeBackupPrivilege 2032 msdcsc.exe Token: SeRestorePrivilege 2032 msdcsc.exe Token: SeShutdownPrivilege 2032 msdcsc.exe Token: SeDebugPrivilege 2032 msdcsc.exe Token: SeSystemEnvironmentPrivilege 2032 msdcsc.exe Token: SeChangeNotifyPrivilege 2032 msdcsc.exe Token: SeRemoteShutdownPrivilege 2032 msdcsc.exe Token: SeUndockPrivilege 2032 msdcsc.exe Token: SeManageVolumePrivilege 2032 msdcsc.exe Token: SeImpersonatePrivilege 2032 msdcsc.exe Token: SeCreateGlobalPrivilege 2032 msdcsc.exe Token: 33 2032 msdcsc.exe Token: 34 2032 msdcsc.exe Token: 35 2032 msdcsc.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
msdcsc.exepid process 2032 msdcsc.exe -
Suspicious use of WriteProcessMemory 27 IoCs
Processes:
ad87e5a9500e397571096c8c91289ab3b0062476bfb2b598e8f13bca800b5312.exemsdcsc.exedescription pid process target process PID 2024 wrote to memory of 2032 2024 ad87e5a9500e397571096c8c91289ab3b0062476bfb2b598e8f13bca800b5312.exe msdcsc.exe PID 2024 wrote to memory of 2032 2024 ad87e5a9500e397571096c8c91289ab3b0062476bfb2b598e8f13bca800b5312.exe msdcsc.exe PID 2024 wrote to memory of 2032 2024 ad87e5a9500e397571096c8c91289ab3b0062476bfb2b598e8f13bca800b5312.exe msdcsc.exe PID 2024 wrote to memory of 2032 2024 ad87e5a9500e397571096c8c91289ab3b0062476bfb2b598e8f13bca800b5312.exe msdcsc.exe PID 2032 wrote to memory of 924 2032 msdcsc.exe notepad.exe PID 2032 wrote to memory of 924 2032 msdcsc.exe notepad.exe PID 2032 wrote to memory of 924 2032 msdcsc.exe notepad.exe PID 2032 wrote to memory of 924 2032 msdcsc.exe notepad.exe PID 2032 wrote to memory of 924 2032 msdcsc.exe notepad.exe PID 2032 wrote to memory of 924 2032 msdcsc.exe notepad.exe PID 2032 wrote to memory of 924 2032 msdcsc.exe notepad.exe PID 2032 wrote to memory of 924 2032 msdcsc.exe notepad.exe PID 2032 wrote to memory of 924 2032 msdcsc.exe notepad.exe PID 2032 wrote to memory of 924 2032 msdcsc.exe notepad.exe PID 2032 wrote to memory of 924 2032 msdcsc.exe notepad.exe PID 2032 wrote to memory of 924 2032 msdcsc.exe notepad.exe PID 2032 wrote to memory of 924 2032 msdcsc.exe notepad.exe PID 2032 wrote to memory of 924 2032 msdcsc.exe notepad.exe PID 2032 wrote to memory of 924 2032 msdcsc.exe notepad.exe PID 2032 wrote to memory of 924 2032 msdcsc.exe notepad.exe PID 2032 wrote to memory of 924 2032 msdcsc.exe notepad.exe PID 2032 wrote to memory of 924 2032 msdcsc.exe notepad.exe PID 2032 wrote to memory of 924 2032 msdcsc.exe notepad.exe PID 2032 wrote to memory of 924 2032 msdcsc.exe notepad.exe PID 2032 wrote to memory of 924 2032 msdcsc.exe notepad.exe PID 2032 wrote to memory of 924 2032 msdcsc.exe notepad.exe PID 2032 wrote to memory of 924 2032 msdcsc.exe notepad.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\ad87e5a9500e397571096c8c91289ab3b0062476bfb2b598e8f13bca800b5312.exe"C:\Users\Admin\AppData\Local\Temp\ad87e5a9500e397571096c8c91289ab3b0062476bfb2b598e8f13bca800b5312.exe"1⤵
- Modifies WinLogon for persistence
- Loads dropped DLL
- Adds Run key to start application
- Drops file in System32 directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\MSDCSC\msdcsc.exe"C:\Windows\system32\MSDCSC\msdcsc.exe"2⤵
- Modifies firewall policy service
- Executes dropped EXE
- Adds Run key to start application
- 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:\Windows\SysWOW64\MSDCSC\msdcsc.exeFilesize
251KB
MD51884c58a039697b2b792929dfa2354b0
SHA10dbf1786a0913b67545127ecc8dd82778f3f66d0
SHA256ad87e5a9500e397571096c8c91289ab3b0062476bfb2b598e8f13bca800b5312
SHA5127d245aa06ae838788de31deb6589afff73ce78e64983d2a90fcfc14efca2f3dd680f4cdebc8b6748130ff1aa6eb2229b2cde220dd26cbf644a783f2f098e0761
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C:\Windows\SysWOW64\MSDCSC\msdcsc.exeFilesize
251KB
MD51884c58a039697b2b792929dfa2354b0
SHA10dbf1786a0913b67545127ecc8dd82778f3f66d0
SHA256ad87e5a9500e397571096c8c91289ab3b0062476bfb2b598e8f13bca800b5312
SHA5127d245aa06ae838788de31deb6589afff73ce78e64983d2a90fcfc14efca2f3dd680f4cdebc8b6748130ff1aa6eb2229b2cde220dd26cbf644a783f2f098e0761
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\Windows\SysWOW64\MSDCSC\msdcsc.exeFilesize
251KB
MD51884c58a039697b2b792929dfa2354b0
SHA10dbf1786a0913b67545127ecc8dd82778f3f66d0
SHA256ad87e5a9500e397571096c8c91289ab3b0062476bfb2b598e8f13bca800b5312
SHA5127d245aa06ae838788de31deb6589afff73ce78e64983d2a90fcfc14efca2f3dd680f4cdebc8b6748130ff1aa6eb2229b2cde220dd26cbf644a783f2f098e0761
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\Windows\SysWOW64\MSDCSC\msdcsc.exeFilesize
251KB
MD51884c58a039697b2b792929dfa2354b0
SHA10dbf1786a0913b67545127ecc8dd82778f3f66d0
SHA256ad87e5a9500e397571096c8c91289ab3b0062476bfb2b598e8f13bca800b5312
SHA5127d245aa06ae838788de31deb6589afff73ce78e64983d2a90fcfc14efca2f3dd680f4cdebc8b6748130ff1aa6eb2229b2cde220dd26cbf644a783f2f098e0761
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memory/924-62-0x0000000000000000-mapping.dmp
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memory/2024-54-0x0000000076391000-0x0000000076393000-memory.dmpFilesize
8KB
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memory/2024-55-0x0000000000400000-0x00000000004B7000-memory.dmpFilesize
732KB
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memory/2024-64-0x0000000003220000-0x00000000032D7000-memory.dmpFilesize
732KB
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memory/2024-66-0x0000000000400000-0x00000000004B7000-memory.dmpFilesize
732KB
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memory/2032-58-0x0000000000000000-mapping.dmp
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memory/2032-65-0x0000000000400000-0x00000000004B7000-memory.dmpFilesize
732KB
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memory/2032-67-0x0000000000400000-0x00000000004B7000-memory.dmpFilesize
732KB