Analysis
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max time kernel
151s -
max time network
155s -
platform
windows7_x64 -
resource
win7-20220414-en -
submitted
20-06-2022 16:30
Behavioral task
behavioral1
Sample
free amongus no virus.exe
Resource
win7-20220414-en
General
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Target
free amongus no virus.exe
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Size
659KB
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MD5
21cb738e372351de0abf0f5bc532ab2c
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SHA1
af006c081c76f91866f377059db52576478aab82
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SHA256
9f95c22d51882e238da73706c58c9903b4f8543b8dbc549c8b01f9d3b4210165
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SHA512
308150556c89f262b74130c0548c134bc1e0ad4e29dd04500e297f53b15988fb3f79cda8a0dafeb225a8ceac1bec5ccfd57a88d02d16dbb82e29d5d703e4cde8
Malware Config
Extracted
darkcomet
Sazan
sussysdfffdfff343.duckdns.org:1604
DC_MUTEX-TUY24DX
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InstallPath
MSDCSC\msdcsc.exe
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gencode
TPTxFZiBzSR9
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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:
free amongus no virus.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" free amongus no virus.exe -
Modifies security service 2 TTPs 2 IoCs
Processes:
msdcsc.exeiexplore.exedescription ioc process Set value (int) \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\wscsvc\Start = "4" msdcsc.exe Set value (int) \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\wscsvc\Start = "4" iexplore.exe -
Processes:
msdcsc.exeiexplore.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1" msdcsc.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1" msdcsc.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1" iexplore.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1" iexplore.exe -
suricata: ET MALWARE Backdoor.Win32.DarkComet Screenshot Upload Successful
suricata: ET MALWARE Backdoor.Win32.DarkComet Screenshot Upload Successful
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Executes dropped EXE 1 IoCs
Processes:
msdcsc.exepid process 1920 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 2016 attrib.exe 2012 attrib.exe -
Deletes itself 1 IoCs
Processes:
notepad.exepid process 2000 notepad.exe -
Loads dropped DLL 2 IoCs
Processes:
free amongus no virus.exepid process 548 free amongus no virus.exe 548 free amongus no virus.exe -
Processes:
msdcsc.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1" msdcsc.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1" msdcsc.exe -
Adds Run key to start application 2 TTPs 3 IoCs
Processes:
msdcsc.exeiexplore.exefree amongus no virus.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe" msdcsc.exe Set value (str) \REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe" iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe" free amongus no virus.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
msdcsc.exedescription pid process target process PID 1920 set thread context of 1888 1920 msdcsc.exe iexplore.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:
iexplore.exepid process 1888 iexplore.exe -
Suspicious use of AdjustPrivilegeToken 64 IoCs
Processes:
free amongus no virus.exemsdcsc.exeiexplore.exedescription pid process Token: SeIncreaseQuotaPrivilege 548 free amongus no virus.exe Token: SeSecurityPrivilege 548 free amongus no virus.exe Token: SeTakeOwnershipPrivilege 548 free amongus no virus.exe Token: SeLoadDriverPrivilege 548 free amongus no virus.exe Token: SeSystemProfilePrivilege 548 free amongus no virus.exe Token: SeSystemtimePrivilege 548 free amongus no virus.exe Token: SeProfSingleProcessPrivilege 548 free amongus no virus.exe Token: SeIncBasePriorityPrivilege 548 free amongus no virus.exe Token: SeCreatePagefilePrivilege 548 free amongus no virus.exe Token: SeBackupPrivilege 548 free amongus no virus.exe Token: SeRestorePrivilege 548 free amongus no virus.exe Token: SeShutdownPrivilege 548 free amongus no virus.exe Token: SeDebugPrivilege 548 free amongus no virus.exe Token: SeSystemEnvironmentPrivilege 548 free amongus no virus.exe Token: SeChangeNotifyPrivilege 548 free amongus no virus.exe Token: SeRemoteShutdownPrivilege 548 free amongus no virus.exe Token: SeUndockPrivilege 548 free amongus no virus.exe Token: SeManageVolumePrivilege 548 free amongus no virus.exe Token: SeImpersonatePrivilege 548 free amongus no virus.exe Token: SeCreateGlobalPrivilege 548 free amongus no virus.exe Token: 33 548 free amongus no virus.exe Token: 34 548 free amongus no virus.exe Token: 35 548 free amongus no virus.exe Token: SeIncreaseQuotaPrivilege 1920 msdcsc.exe Token: SeSecurityPrivilege 1920 msdcsc.exe Token: SeTakeOwnershipPrivilege 1920 msdcsc.exe Token: SeLoadDriverPrivilege 1920 msdcsc.exe Token: SeSystemProfilePrivilege 1920 msdcsc.exe Token: SeSystemtimePrivilege 1920 msdcsc.exe Token: SeProfSingleProcessPrivilege 1920 msdcsc.exe Token: SeIncBasePriorityPrivilege 1920 msdcsc.exe Token: SeCreatePagefilePrivilege 1920 msdcsc.exe Token: SeBackupPrivilege 1920 msdcsc.exe Token: SeRestorePrivilege 1920 msdcsc.exe Token: SeShutdownPrivilege 1920 msdcsc.exe Token: SeDebugPrivilege 1920 msdcsc.exe Token: SeSystemEnvironmentPrivilege 1920 msdcsc.exe Token: SeChangeNotifyPrivilege 1920 msdcsc.exe Token: SeRemoteShutdownPrivilege 1920 msdcsc.exe Token: SeUndockPrivilege 1920 msdcsc.exe Token: SeManageVolumePrivilege 1920 msdcsc.exe Token: SeImpersonatePrivilege 1920 msdcsc.exe Token: SeCreateGlobalPrivilege 1920 msdcsc.exe Token: 33 1920 msdcsc.exe Token: 34 1920 msdcsc.exe Token: 35 1920 msdcsc.exe Token: SeIncreaseQuotaPrivilege 1888 iexplore.exe Token: SeSecurityPrivilege 1888 iexplore.exe Token: SeTakeOwnershipPrivilege 1888 iexplore.exe Token: SeLoadDriverPrivilege 1888 iexplore.exe Token: SeSystemProfilePrivilege 1888 iexplore.exe Token: SeSystemtimePrivilege 1888 iexplore.exe Token: SeProfSingleProcessPrivilege 1888 iexplore.exe Token: SeIncBasePriorityPrivilege 1888 iexplore.exe Token: SeCreatePagefilePrivilege 1888 iexplore.exe Token: SeBackupPrivilege 1888 iexplore.exe Token: SeRestorePrivilege 1888 iexplore.exe Token: SeShutdownPrivilege 1888 iexplore.exe Token: SeDebugPrivilege 1888 iexplore.exe Token: SeSystemEnvironmentPrivilege 1888 iexplore.exe Token: SeChangeNotifyPrivilege 1888 iexplore.exe Token: SeRemoteShutdownPrivilege 1888 iexplore.exe Token: SeUndockPrivilege 1888 iexplore.exe Token: SeManageVolumePrivilege 1888 iexplore.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
iexplore.exepid process 1888 iexplore.exe -
Suspicious use of WriteProcessMemory 64 IoCs
Processes:
free amongus no virus.execmd.execmd.exemsdcsc.exeiexplore.exedescription pid process target process PID 548 wrote to memory of 2040 548 free amongus no virus.exe cmd.exe PID 548 wrote to memory of 2040 548 free amongus no virus.exe cmd.exe PID 548 wrote to memory of 2040 548 free amongus no virus.exe cmd.exe PID 548 wrote to memory of 2040 548 free amongus no virus.exe cmd.exe PID 548 wrote to memory of 1740 548 free amongus no virus.exe cmd.exe PID 548 wrote to memory of 1740 548 free amongus no virus.exe cmd.exe PID 548 wrote to memory of 1740 548 free amongus no virus.exe cmd.exe PID 548 wrote to memory of 1740 548 free amongus no virus.exe cmd.exe PID 1740 wrote to memory of 2016 1740 cmd.exe attrib.exe PID 1740 wrote to memory of 2016 1740 cmd.exe attrib.exe PID 1740 wrote to memory of 2016 1740 cmd.exe attrib.exe PID 1740 wrote to memory of 2016 1740 cmd.exe attrib.exe PID 548 wrote to memory of 2000 548 free amongus no virus.exe notepad.exe PID 548 wrote to memory of 2000 548 free amongus no virus.exe notepad.exe PID 548 wrote to memory of 2000 548 free amongus no virus.exe notepad.exe PID 548 wrote to memory of 2000 548 free amongus no virus.exe notepad.exe PID 2040 wrote to memory of 2012 2040 cmd.exe attrib.exe PID 2040 wrote to memory of 2012 2040 cmd.exe attrib.exe PID 2040 wrote to memory of 2012 2040 cmd.exe attrib.exe PID 2040 wrote to memory of 2012 2040 cmd.exe attrib.exe PID 548 wrote to memory of 2000 548 free amongus no virus.exe notepad.exe PID 548 wrote to memory of 2000 548 free amongus no virus.exe notepad.exe PID 548 wrote to memory of 2000 548 free amongus no virus.exe notepad.exe PID 548 wrote to memory of 2000 548 free amongus no virus.exe notepad.exe PID 548 wrote to memory of 2000 548 free amongus no virus.exe notepad.exe PID 548 wrote to memory of 2000 548 free amongus no virus.exe notepad.exe PID 548 wrote to memory of 2000 548 free amongus no virus.exe notepad.exe PID 548 wrote to memory of 2000 548 free amongus no virus.exe notepad.exe PID 548 wrote to memory of 2000 548 free amongus no virus.exe notepad.exe PID 548 wrote to memory of 2000 548 free amongus no virus.exe notepad.exe PID 548 wrote to memory of 2000 548 free amongus no virus.exe notepad.exe PID 548 wrote to memory of 2000 548 free amongus no virus.exe notepad.exe PID 548 wrote to memory of 2000 548 free amongus no virus.exe notepad.exe PID 548 wrote to memory of 2000 548 free amongus no virus.exe notepad.exe PID 548 wrote to memory of 1920 548 free amongus no virus.exe msdcsc.exe PID 548 wrote to memory of 1920 548 free amongus no virus.exe msdcsc.exe PID 548 wrote to memory of 1920 548 free amongus no virus.exe msdcsc.exe PID 548 wrote to memory of 1920 548 free amongus no virus.exe msdcsc.exe PID 1920 wrote to memory of 1888 1920 msdcsc.exe iexplore.exe PID 1920 wrote to memory of 1888 1920 msdcsc.exe iexplore.exe PID 1920 wrote to memory of 1888 1920 msdcsc.exe iexplore.exe PID 1920 wrote to memory of 1888 1920 msdcsc.exe iexplore.exe PID 1920 wrote to memory of 1888 1920 msdcsc.exe iexplore.exe PID 1920 wrote to memory of 1888 1920 msdcsc.exe iexplore.exe PID 1888 wrote to memory of 1188 1888 iexplore.exe notepad.exe PID 1888 wrote to memory of 1188 1888 iexplore.exe notepad.exe PID 1888 wrote to memory of 1188 1888 iexplore.exe notepad.exe PID 1888 wrote to memory of 1188 1888 iexplore.exe notepad.exe PID 1888 wrote to memory of 1188 1888 iexplore.exe notepad.exe PID 1888 wrote to memory of 1188 1888 iexplore.exe notepad.exe PID 1888 wrote to memory of 1188 1888 iexplore.exe notepad.exe PID 1888 wrote to memory of 1188 1888 iexplore.exe notepad.exe PID 1888 wrote to memory of 1188 1888 iexplore.exe notepad.exe PID 1888 wrote to memory of 1188 1888 iexplore.exe notepad.exe PID 1888 wrote to memory of 1188 1888 iexplore.exe notepad.exe PID 1888 wrote to memory of 1188 1888 iexplore.exe notepad.exe PID 1888 wrote to memory of 1188 1888 iexplore.exe notepad.exe PID 1888 wrote to memory of 1188 1888 iexplore.exe notepad.exe PID 1888 wrote to memory of 1188 1888 iexplore.exe notepad.exe PID 1888 wrote to memory of 1188 1888 iexplore.exe notepad.exe PID 1888 wrote to memory of 1188 1888 iexplore.exe notepad.exe PID 1888 wrote to memory of 1188 1888 iexplore.exe notepad.exe PID 1888 wrote to memory of 1188 1888 iexplore.exe notepad.exe PID 1888 wrote to memory of 1188 1888 iexplore.exe notepad.exe -
System policy modification 1 TTPs 3 IoCs
Processes:
msdcsc.exedescription ioc process Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\CurrentVersion msdcsc.exe Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\CurrentVersion\Explorern msdcsc.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\CurrentVersion\Explorern\NoControlPanel = "1" msdcsc.exe -
Views/modifies file attributes 1 TTPs 2 IoCs
Processes:
attrib.exeattrib.exepid process 2016 attrib.exe 2012 attrib.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\free amongus no virus.exe"C:\Users\Admin\AppData\Local\Temp\free amongus no virus.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\free amongus no virus.exe" +s +h2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\attrib.exeattrib "C:\Users\Admin\AppData\Local\Temp\free amongus no virus.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⤵
- Modifies security service
- Windows security bypass
- Executes dropped EXE
- Windows security modification
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- System policy modification
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C:\Program Files (x86)\Internet Explorer\iexplore.exe"C:\Program Files (x86)\Internet Explorer\iexplore.exe"3⤵
- Modifies security service
- Windows security bypass
- Adds Run key to start application
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\notepad.exenotepad4⤵
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe"4⤵
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe"4⤵
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe"4⤵
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe"4⤵
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe"4⤵
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe"4⤵
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe"4⤵
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe"4⤵
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe"4⤵
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe"4⤵
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe"4⤵
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
659KB
MD521cb738e372351de0abf0f5bc532ab2c
SHA1af006c081c76f91866f377059db52576478aab82
SHA2569f95c22d51882e238da73706c58c9903b4f8543b8dbc549c8b01f9d3b4210165
SHA512308150556c89f262b74130c0548c134bc1e0ad4e29dd04500e297f53b15988fb3f79cda8a0dafeb225a8ceac1bec5ccfd57a88d02d16dbb82e29d5d703e4cde8
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C:\Users\Admin\Documents\MSDCSC\msdcsc.exeFilesize
659KB
MD521cb738e372351de0abf0f5bc532ab2c
SHA1af006c081c76f91866f377059db52576478aab82
SHA2569f95c22d51882e238da73706c58c9903b4f8543b8dbc549c8b01f9d3b4210165
SHA512308150556c89f262b74130c0548c134bc1e0ad4e29dd04500e297f53b15988fb3f79cda8a0dafeb225a8ceac1bec5ccfd57a88d02d16dbb82e29d5d703e4cde8
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\Users\Admin\Documents\MSDCSC\msdcsc.exeFilesize
659KB
MD521cb738e372351de0abf0f5bc532ab2c
SHA1af006c081c76f91866f377059db52576478aab82
SHA2569f95c22d51882e238da73706c58c9903b4f8543b8dbc549c8b01f9d3b4210165
SHA512308150556c89f262b74130c0548c134bc1e0ad4e29dd04500e297f53b15988fb3f79cda8a0dafeb225a8ceac1bec5ccfd57a88d02d16dbb82e29d5d703e4cde8
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\Users\Admin\Documents\MSDCSC\msdcsc.exeFilesize
659KB
MD521cb738e372351de0abf0f5bc532ab2c
SHA1af006c081c76f91866f377059db52576478aab82
SHA2569f95c22d51882e238da73706c58c9903b4f8543b8dbc549c8b01f9d3b4210165
SHA512308150556c89f262b74130c0548c134bc1e0ad4e29dd04500e297f53b15988fb3f79cda8a0dafeb225a8ceac1bec5ccfd57a88d02d16dbb82e29d5d703e4cde8
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memory/308-76-0x0000000000000000-mapping.dmp
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memory/436-73-0x0000000000000000-mapping.dmp
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memory/548-54-0x0000000075D21000-0x0000000075D23000-memory.dmpFilesize
8KB
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memory/1188-67-0x0000000000000000-mapping.dmp
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memory/1288-75-0x0000000000000000-mapping.dmp
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memory/1452-72-0x0000000000000000-mapping.dmp
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memory/1524-70-0x0000000000000000-mapping.dmp
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memory/1532-78-0x0000000000000000-mapping.dmp
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memory/1540-79-0x0000000000000000-mapping.dmp
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memory/1632-77-0x0000000000000000-mapping.dmp
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memory/1672-71-0x0000000000000000-mapping.dmp
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memory/1740-56-0x0000000000000000-mapping.dmp
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memory/1920-63-0x0000000000000000-mapping.dmp
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memory/1992-74-0x0000000000000000-mapping.dmp
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memory/1996-69-0x0000000000000000-mapping.dmp
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memory/2000-58-0x0000000000000000-mapping.dmp
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memory/2012-59-0x0000000000000000-mapping.dmp
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memory/2016-57-0x0000000000000000-mapping.dmp
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memory/2040-55-0x0000000000000000-mapping.dmp