Analysis
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max time kernel
180s -
max time network
235s -
platform
windows7_x64 -
resource
win7-20221111-en -
resource tags
arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system -
submitted
02-12-2022 17:58
Static task
static1
Behavioral task
behavioral1
Sample
c6f1d086b0efdd127c9f66422df62a9dd6730a4d6ff33dc7d6246f0ba420cc06.exe
Resource
win7-20221111-en
Behavioral task
behavioral2
Sample
c6f1d086b0efdd127c9f66422df62a9dd6730a4d6ff33dc7d6246f0ba420cc06.exe
Resource
win10v2004-20220812-en
General
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Target
c6f1d086b0efdd127c9f66422df62a9dd6730a4d6ff33dc7d6246f0ba420cc06.exe
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Size
842KB
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MD5
db846fc767bbc92ff7d3eac3b66a5198
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SHA1
98206308068bd214ea4a0154e37cc5327c3fcdf0
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SHA256
c6f1d086b0efdd127c9f66422df62a9dd6730a4d6ff33dc7d6246f0ba420cc06
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SHA512
55528a8e6e4495d2844bad5b21fbdb46d79e949ee11938ceae263197a5cc4a34744da1c4374089fe364c447d9b07dfbce4f96df1463e4f6fa20a7bd7244bf63e
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SSDEEP
24576:h04aY7IxRCHL7WW33V6ivu6+JuQPoqhxqjmZse:h8cIHyL6ViW6yoq7qjmie
Malware Config
Extracted
darkcomet
BotNet
psychozerker.no-ip.biz:1604
DC_MUTEX-EJJAAGS
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InstallPath
MSDCSC\msdcsc.exe
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gencode
pq0xoo1jfSUP
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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:
msvc.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" msvc.exe -
Executes dropped EXE 2 IoCs
Processes:
msvc.exemsdcsc.exepid process 1128 msvc.exe 1308 msdcsc.exe -
Loads dropped DLL 4 IoCs
Processes:
c6f1d086b0efdd127c9f66422df62a9dd6730a4d6ff33dc7d6246f0ba420cc06.exemsvc.exepid process 1300 c6f1d086b0efdd127c9f66422df62a9dd6730a4d6ff33dc7d6246f0ba420cc06.exe 1300 c6f1d086b0efdd127c9f66422df62a9dd6730a4d6ff33dc7d6246f0ba420cc06.exe 1128 msvc.exe 1128 msvc.exe -
Adds Run key to start application 2 TTPs 2 IoCs
Processes:
msvc.exemsdcsc.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Windows\\system32\\MSDCSC\\msdcsc.exe" msvc.exe Set value (str) \REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Windows\\system32\\MSDCSC\\msdcsc.exe" msdcsc.exe -
Drops file in System32 directory 4 IoCs
Processes:
c6f1d086b0efdd127c9f66422df62a9dd6730a4d6ff33dc7d6246f0ba420cc06.exemsvc.exedescription ioc process File opened for modification C:\Windows\SysWOW64\msvc.exe c6f1d086b0efdd127c9f66422df62a9dd6730a4d6ff33dc7d6246f0ba420cc06.exe File created C:\Windows\SysWOW64\MSDCSC\msdcsc.exe msvc.exe File opened for modification C:\Windows\SysWOW64\MSDCSC\msdcsc.exe msvc.exe File opened for modification C:\Windows\SysWOW64\MSDCSC\ msvc.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Modifies registry key 1 TTPs 1 IoCs
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Suspicious behavior: RenamesItself 1 IoCs
Processes:
c6f1d086b0efdd127c9f66422df62a9dd6730a4d6ff33dc7d6246f0ba420cc06.exepid process 1300 c6f1d086b0efdd127c9f66422df62a9dd6730a4d6ff33dc7d6246f0ba420cc06.exe -
Suspicious use of AdjustPrivilegeToken 46 IoCs
Processes:
msvc.exemsdcsc.exedescription pid process Token: SeIncreaseQuotaPrivilege 1128 msvc.exe Token: SeSecurityPrivilege 1128 msvc.exe Token: SeTakeOwnershipPrivilege 1128 msvc.exe Token: SeLoadDriverPrivilege 1128 msvc.exe Token: SeSystemProfilePrivilege 1128 msvc.exe Token: SeSystemtimePrivilege 1128 msvc.exe Token: SeProfSingleProcessPrivilege 1128 msvc.exe Token: SeIncBasePriorityPrivilege 1128 msvc.exe Token: SeCreatePagefilePrivilege 1128 msvc.exe Token: SeBackupPrivilege 1128 msvc.exe Token: SeRestorePrivilege 1128 msvc.exe Token: SeShutdownPrivilege 1128 msvc.exe Token: SeDebugPrivilege 1128 msvc.exe Token: SeSystemEnvironmentPrivilege 1128 msvc.exe Token: SeChangeNotifyPrivilege 1128 msvc.exe Token: SeRemoteShutdownPrivilege 1128 msvc.exe Token: SeUndockPrivilege 1128 msvc.exe Token: SeManageVolumePrivilege 1128 msvc.exe Token: SeImpersonatePrivilege 1128 msvc.exe Token: SeCreateGlobalPrivilege 1128 msvc.exe Token: 33 1128 msvc.exe Token: 34 1128 msvc.exe Token: 35 1128 msvc.exe Token: SeIncreaseQuotaPrivilege 1308 msdcsc.exe Token: SeSecurityPrivilege 1308 msdcsc.exe Token: SeTakeOwnershipPrivilege 1308 msdcsc.exe Token: SeLoadDriverPrivilege 1308 msdcsc.exe Token: SeSystemProfilePrivilege 1308 msdcsc.exe Token: SeSystemtimePrivilege 1308 msdcsc.exe Token: SeProfSingleProcessPrivilege 1308 msdcsc.exe Token: SeIncBasePriorityPrivilege 1308 msdcsc.exe Token: SeCreatePagefilePrivilege 1308 msdcsc.exe Token: SeBackupPrivilege 1308 msdcsc.exe Token: SeRestorePrivilege 1308 msdcsc.exe Token: SeShutdownPrivilege 1308 msdcsc.exe Token: SeDebugPrivilege 1308 msdcsc.exe Token: SeSystemEnvironmentPrivilege 1308 msdcsc.exe Token: SeChangeNotifyPrivilege 1308 msdcsc.exe Token: SeRemoteShutdownPrivilege 1308 msdcsc.exe Token: SeUndockPrivilege 1308 msdcsc.exe Token: SeManageVolumePrivilege 1308 msdcsc.exe Token: SeImpersonatePrivilege 1308 msdcsc.exe Token: SeCreateGlobalPrivilege 1308 msdcsc.exe Token: 33 1308 msdcsc.exe Token: 34 1308 msdcsc.exe Token: 35 1308 msdcsc.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
Processes:
c6f1d086b0efdd127c9f66422df62a9dd6730a4d6ff33dc7d6246f0ba420cc06.exemsdcsc.exepid process 1300 c6f1d086b0efdd127c9f66422df62a9dd6730a4d6ff33dc7d6246f0ba420cc06.exe 1308 msdcsc.exe -
Suspicious use of WriteProcessMemory 57 IoCs
Processes:
c6f1d086b0efdd127c9f66422df62a9dd6730a4d6ff33dc7d6246f0ba420cc06.execmd.exemsvc.exemsdcsc.exedescription pid process target process PID 1300 wrote to memory of 1248 1300 c6f1d086b0efdd127c9f66422df62a9dd6730a4d6ff33dc7d6246f0ba420cc06.exe cmd.exe PID 1300 wrote to memory of 1248 1300 c6f1d086b0efdd127c9f66422df62a9dd6730a4d6ff33dc7d6246f0ba420cc06.exe cmd.exe PID 1300 wrote to memory of 1248 1300 c6f1d086b0efdd127c9f66422df62a9dd6730a4d6ff33dc7d6246f0ba420cc06.exe cmd.exe PID 1300 wrote to memory of 1248 1300 c6f1d086b0efdd127c9f66422df62a9dd6730a4d6ff33dc7d6246f0ba420cc06.exe cmd.exe PID 1248 wrote to memory of 1188 1248 cmd.exe reg.exe PID 1248 wrote to memory of 1188 1248 cmd.exe reg.exe PID 1248 wrote to memory of 1188 1248 cmd.exe reg.exe PID 1248 wrote to memory of 1188 1248 cmd.exe reg.exe PID 1300 wrote to memory of 1128 1300 c6f1d086b0efdd127c9f66422df62a9dd6730a4d6ff33dc7d6246f0ba420cc06.exe msvc.exe PID 1300 wrote to memory of 1128 1300 c6f1d086b0efdd127c9f66422df62a9dd6730a4d6ff33dc7d6246f0ba420cc06.exe msvc.exe PID 1300 wrote to memory of 1128 1300 c6f1d086b0efdd127c9f66422df62a9dd6730a4d6ff33dc7d6246f0ba420cc06.exe msvc.exe PID 1300 wrote to memory of 1128 1300 c6f1d086b0efdd127c9f66422df62a9dd6730a4d6ff33dc7d6246f0ba420cc06.exe msvc.exe PID 1128 wrote to memory of 1140 1128 msvc.exe notepad.exe PID 1128 wrote to memory of 1140 1128 msvc.exe notepad.exe PID 1128 wrote to memory of 1140 1128 msvc.exe notepad.exe PID 1128 wrote to memory of 1140 1128 msvc.exe notepad.exe PID 1128 wrote to memory of 1140 1128 msvc.exe notepad.exe PID 1128 wrote to memory of 1140 1128 msvc.exe notepad.exe PID 1128 wrote to memory of 1140 1128 msvc.exe notepad.exe PID 1128 wrote to memory of 1140 1128 msvc.exe notepad.exe PID 1128 wrote to memory of 1140 1128 msvc.exe notepad.exe PID 1128 wrote to memory of 1140 1128 msvc.exe notepad.exe PID 1128 wrote to memory of 1140 1128 msvc.exe notepad.exe PID 1128 wrote to memory of 1140 1128 msvc.exe notepad.exe PID 1128 wrote to memory of 1140 1128 msvc.exe notepad.exe PID 1128 wrote to memory of 1140 1128 msvc.exe notepad.exe PID 1128 wrote to memory of 1140 1128 msvc.exe notepad.exe PID 1128 wrote to memory of 1140 1128 msvc.exe notepad.exe PID 1128 wrote to memory of 1140 1128 msvc.exe notepad.exe PID 1128 wrote to memory of 1140 1128 msvc.exe notepad.exe PID 1128 wrote to memory of 1308 1128 msvc.exe msdcsc.exe PID 1128 wrote to memory of 1308 1128 msvc.exe msdcsc.exe PID 1128 wrote to memory of 1308 1128 msvc.exe msdcsc.exe PID 1128 wrote to memory of 1308 1128 msvc.exe msdcsc.exe PID 1308 wrote to memory of 1276 1308 msdcsc.exe notepad.exe PID 1308 wrote to memory of 1276 1308 msdcsc.exe notepad.exe PID 1308 wrote to memory of 1276 1308 msdcsc.exe notepad.exe PID 1308 wrote to memory of 1276 1308 msdcsc.exe notepad.exe PID 1308 wrote to memory of 1276 1308 msdcsc.exe notepad.exe PID 1308 wrote to memory of 1276 1308 msdcsc.exe notepad.exe PID 1308 wrote to memory of 1276 1308 msdcsc.exe notepad.exe PID 1308 wrote to memory of 1276 1308 msdcsc.exe notepad.exe PID 1308 wrote to memory of 1276 1308 msdcsc.exe notepad.exe PID 1308 wrote to memory of 1276 1308 msdcsc.exe notepad.exe PID 1308 wrote to memory of 1276 1308 msdcsc.exe notepad.exe PID 1308 wrote to memory of 1276 1308 msdcsc.exe notepad.exe PID 1308 wrote to memory of 1276 1308 msdcsc.exe notepad.exe PID 1308 wrote to memory of 1276 1308 msdcsc.exe notepad.exe PID 1308 wrote to memory of 1276 1308 msdcsc.exe notepad.exe PID 1308 wrote to memory of 1276 1308 msdcsc.exe notepad.exe PID 1308 wrote to memory of 1276 1308 msdcsc.exe notepad.exe PID 1308 wrote to memory of 1276 1308 msdcsc.exe notepad.exe PID 1308 wrote to memory of 1276 1308 msdcsc.exe notepad.exe PID 1308 wrote to memory of 1276 1308 msdcsc.exe notepad.exe PID 1308 wrote to memory of 1276 1308 msdcsc.exe notepad.exe PID 1308 wrote to memory of 1276 1308 msdcsc.exe notepad.exe PID 1308 wrote to memory of 1276 1308 msdcsc.exe notepad.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\c6f1d086b0efdd127c9f66422df62a9dd6730a4d6ff33dc7d6246f0ba420cc06.exe"C:\Users\Admin\AppData\Local\Temp\c6f1d086b0efdd127c9f66422df62a9dd6730a4d6ff33dc7d6246f0ba420cc06.exe"1⤵
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious behavior: RenamesItself
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\cmd.execmd /c REG ADD HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Run /v Startup Key /t REG_SZ /d C:\Users\Admin\AppData\Local\Temp\services.exe /f2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\reg.exeREG ADD HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Run /v Startup Key /t REG_SZ /d C:\Users\Admin\AppData\Local\Temp\services.exe /f3⤵
- Modifies registry key
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C:\Windows\SysWOW64\msvc.exe"C:\Windows\system32\msvc.exe"2⤵
- Modifies WinLogon for persistence
- Executes dropped EXE
- 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\notepad.exenotepad3⤵
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C:\Windows\SysWOW64\MSDCSC\msdcsc.exe"C:\Windows\system32\MSDCSC\msdcsc.exe"3⤵
- 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.exenotepad4⤵
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Windows\SysWOW64\MSDCSC\msdcsc.exeFilesize
658KB
MD58f4bbb731381a70550b4114813d25eff
SHA15633841905950669dff2dc442031abc23e71c071
SHA256ba92ef73fd0b6e50aef46b8d696063daf0a4e5cd77210e5b30b8d42d68390c8a
SHA51294a1b0f2a16bc177b293c9dfd2a1b20a034288c9ad41f5965b2f4535354735211261bddf09add86008e6b8baa5c6fe92d6f0669c12663c26aa9083f20365cdf7
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C:\Windows\SysWOW64\MSDCSC\msdcsc.exeFilesize
658KB
MD58f4bbb731381a70550b4114813d25eff
SHA15633841905950669dff2dc442031abc23e71c071
SHA256ba92ef73fd0b6e50aef46b8d696063daf0a4e5cd77210e5b30b8d42d68390c8a
SHA51294a1b0f2a16bc177b293c9dfd2a1b20a034288c9ad41f5965b2f4535354735211261bddf09add86008e6b8baa5c6fe92d6f0669c12663c26aa9083f20365cdf7
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C:\Windows\SysWOW64\msvc.exeFilesize
658KB
MD58f4bbb731381a70550b4114813d25eff
SHA15633841905950669dff2dc442031abc23e71c071
SHA256ba92ef73fd0b6e50aef46b8d696063daf0a4e5cd77210e5b30b8d42d68390c8a
SHA51294a1b0f2a16bc177b293c9dfd2a1b20a034288c9ad41f5965b2f4535354735211261bddf09add86008e6b8baa5c6fe92d6f0669c12663c26aa9083f20365cdf7
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C:\Windows\SysWOW64\msvc.exeFilesize
658KB
MD58f4bbb731381a70550b4114813d25eff
SHA15633841905950669dff2dc442031abc23e71c071
SHA256ba92ef73fd0b6e50aef46b8d696063daf0a4e5cd77210e5b30b8d42d68390c8a
SHA51294a1b0f2a16bc177b293c9dfd2a1b20a034288c9ad41f5965b2f4535354735211261bddf09add86008e6b8baa5c6fe92d6f0669c12663c26aa9083f20365cdf7
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\Windows\SysWOW64\MSDCSC\msdcsc.exeFilesize
658KB
MD58f4bbb731381a70550b4114813d25eff
SHA15633841905950669dff2dc442031abc23e71c071
SHA256ba92ef73fd0b6e50aef46b8d696063daf0a4e5cd77210e5b30b8d42d68390c8a
SHA51294a1b0f2a16bc177b293c9dfd2a1b20a034288c9ad41f5965b2f4535354735211261bddf09add86008e6b8baa5c6fe92d6f0669c12663c26aa9083f20365cdf7
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\Windows\SysWOW64\MSDCSC\msdcsc.exeFilesize
658KB
MD58f4bbb731381a70550b4114813d25eff
SHA15633841905950669dff2dc442031abc23e71c071
SHA256ba92ef73fd0b6e50aef46b8d696063daf0a4e5cd77210e5b30b8d42d68390c8a
SHA51294a1b0f2a16bc177b293c9dfd2a1b20a034288c9ad41f5965b2f4535354735211261bddf09add86008e6b8baa5c6fe92d6f0669c12663c26aa9083f20365cdf7
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\Windows\SysWOW64\msvc.exeFilesize
658KB
MD58f4bbb731381a70550b4114813d25eff
SHA15633841905950669dff2dc442031abc23e71c071
SHA256ba92ef73fd0b6e50aef46b8d696063daf0a4e5cd77210e5b30b8d42d68390c8a
SHA51294a1b0f2a16bc177b293c9dfd2a1b20a034288c9ad41f5965b2f4535354735211261bddf09add86008e6b8baa5c6fe92d6f0669c12663c26aa9083f20365cdf7
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\Windows\SysWOW64\msvc.exeFilesize
658KB
MD58f4bbb731381a70550b4114813d25eff
SHA15633841905950669dff2dc442031abc23e71c071
SHA256ba92ef73fd0b6e50aef46b8d696063daf0a4e5cd77210e5b30b8d42d68390c8a
SHA51294a1b0f2a16bc177b293c9dfd2a1b20a034288c9ad41f5965b2f4535354735211261bddf09add86008e6b8baa5c6fe92d6f0669c12663c26aa9083f20365cdf7
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memory/1128-61-0x0000000000000000-mapping.dmp
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memory/1140-65-0x0000000000000000-mapping.dmp
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memory/1188-58-0x0000000000000000-mapping.dmp
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memory/1248-56-0x0000000000000000-mapping.dmp
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memory/1276-73-0x0000000000000000-mapping.dmp
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memory/1300-57-0x0000000075C31000-0x0000000075C33000-memory.dmpFilesize
8KB
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memory/1308-69-0x0000000000000000-mapping.dmp