Analysis
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max time kernel
150s -
max time network
140s -
platform
windows10_x64 -
resource
win10v20201028 -
submitted
17-11-2020 11:40
Static task
static1
Behavioral task
behavioral1
Sample
417dd0fc267b52a099e6d21e2f587448.exe
Resource
win7v20201028
General
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Target
417dd0fc267b52a099e6d21e2f587448.exe
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Size
252KB
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MD5
d87a0b6ff3b80619eff6a91dcbbc92f2
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SHA1
2bd496d9718547ba4ff87aab82ef78e7d020b586
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SHA256
bdca22b50a716ac1106fce8eb7fbb0df989bbf381329e952d16be68dc01c6477
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SHA512
da4d7b6ddb9ac15f82ed0e9452e4e90e474c3b22a2b4eb859f3e34033676d1e6e117278a1c65a22ba27a3ba4199c8b5334b8d036d139a3e5071f917c8026df1e
Malware Config
Extracted
darkcomet
Guest16
batchlove.hopto.org:1605
DC_MUTEX-Y0UZCZQ
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InstallPath
MSDCSC\msdcsc.exe
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gencode
KmnWlesUz91w
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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:
417dd0fc267b52a099e6d21e2f587448.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\ProgramData\\Microsoft\\Windows\\Start Menu\\MSDCSC\\msdcsc.exe" 417dd0fc267b52a099e6d21e2f587448.exe -
Modifies firewall policy service 2 TTPs 6 IoCs
Processes:
iexplore.exemsdcsc.exedescription ioc process Key created \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile iexplore.exe Set value (int) \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\EnableFirewall = "0" iexplore.exe Set value (int) \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DisableNotifications = "0" iexplore.exe 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 -
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 -
Disables RegEdit via registry modification
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Disables Task Manager via registry modification
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Executes dropped EXE 1 IoCs
Processes:
msdcsc.exepid process 968 msdcsc.exe -
Processes:
resource yara_rule C:\ProgramData\Microsoft\Windows\Start Menu\MSDCSC\msdcsc.exe upx C:\ProgramData\Microsoft\Windows\Start Menu\MSDCSC\msdcsc.exe upx behavioral2/memory/2764-7-0x0000000000400000-0x00000000004B7000-memory.dmp upx behavioral2/memory/2764-9-0x0000000000400000-0x00000000004B7000-memory.dmp upx behavioral2/memory/2764-10-0x0000000000400000-0x00000000004B7000-memory.dmp upx -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
417dd0fc267b52a099e6d21e2f587448.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000\Control Panel\International\Geo\Nation 417dd0fc267b52a099e6d21e2f587448.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:
iexplore.exe417dd0fc267b52a099e6d21e2f587448.exemsdcsc.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\ProgramData\\Microsoft\\Windows\\Start Menu\\MSDCSC\\msdcsc.exe" iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\ProgramData\\Microsoft\\Windows\\Start Menu\\MSDCSC\\msdcsc.exe" 417dd0fc267b52a099e6d21e2f587448.exe Set value (str) \REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\ProgramData\\Microsoft\\Windows\\Start Menu\\MSDCSC\\msdcsc.exe" msdcsc.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
msdcsc.exedescription pid process target process PID 968 set thread context of 2764 968 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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Modifies registry class 1 IoCs
Processes:
417dd0fc267b52a099e6d21e2f587448.exedescription ioc process Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance 417dd0fc267b52a099e6d21e2f587448.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
Processes:
iexplore.exepid process 2764 iexplore.exe -
Suspicious use of AdjustPrivilegeToken 64 IoCs
Processes:
417dd0fc267b52a099e6d21e2f587448.exemsdcsc.exeiexplore.exedescription pid process Token: SeIncreaseQuotaPrivilege 1112 417dd0fc267b52a099e6d21e2f587448.exe Token: SeSecurityPrivilege 1112 417dd0fc267b52a099e6d21e2f587448.exe Token: SeTakeOwnershipPrivilege 1112 417dd0fc267b52a099e6d21e2f587448.exe Token: SeLoadDriverPrivilege 1112 417dd0fc267b52a099e6d21e2f587448.exe Token: SeSystemProfilePrivilege 1112 417dd0fc267b52a099e6d21e2f587448.exe Token: SeSystemtimePrivilege 1112 417dd0fc267b52a099e6d21e2f587448.exe Token: SeProfSingleProcessPrivilege 1112 417dd0fc267b52a099e6d21e2f587448.exe Token: SeIncBasePriorityPrivilege 1112 417dd0fc267b52a099e6d21e2f587448.exe Token: SeCreatePagefilePrivilege 1112 417dd0fc267b52a099e6d21e2f587448.exe Token: SeBackupPrivilege 1112 417dd0fc267b52a099e6d21e2f587448.exe Token: SeRestorePrivilege 1112 417dd0fc267b52a099e6d21e2f587448.exe Token: SeShutdownPrivilege 1112 417dd0fc267b52a099e6d21e2f587448.exe Token: SeDebugPrivilege 1112 417dd0fc267b52a099e6d21e2f587448.exe Token: SeSystemEnvironmentPrivilege 1112 417dd0fc267b52a099e6d21e2f587448.exe Token: SeChangeNotifyPrivilege 1112 417dd0fc267b52a099e6d21e2f587448.exe Token: SeRemoteShutdownPrivilege 1112 417dd0fc267b52a099e6d21e2f587448.exe Token: SeUndockPrivilege 1112 417dd0fc267b52a099e6d21e2f587448.exe Token: SeManageVolumePrivilege 1112 417dd0fc267b52a099e6d21e2f587448.exe Token: SeImpersonatePrivilege 1112 417dd0fc267b52a099e6d21e2f587448.exe Token: SeCreateGlobalPrivilege 1112 417dd0fc267b52a099e6d21e2f587448.exe Token: 33 1112 417dd0fc267b52a099e6d21e2f587448.exe Token: 34 1112 417dd0fc267b52a099e6d21e2f587448.exe Token: 35 1112 417dd0fc267b52a099e6d21e2f587448.exe Token: 36 1112 417dd0fc267b52a099e6d21e2f587448.exe Token: SeIncreaseQuotaPrivilege 968 msdcsc.exe Token: SeSecurityPrivilege 968 msdcsc.exe Token: SeTakeOwnershipPrivilege 968 msdcsc.exe Token: SeLoadDriverPrivilege 968 msdcsc.exe Token: SeSystemProfilePrivilege 968 msdcsc.exe Token: SeSystemtimePrivilege 968 msdcsc.exe Token: SeProfSingleProcessPrivilege 968 msdcsc.exe Token: SeIncBasePriorityPrivilege 968 msdcsc.exe Token: SeCreatePagefilePrivilege 968 msdcsc.exe Token: SeBackupPrivilege 968 msdcsc.exe Token: SeRestorePrivilege 968 msdcsc.exe Token: SeShutdownPrivilege 968 msdcsc.exe Token: SeDebugPrivilege 968 msdcsc.exe Token: SeSystemEnvironmentPrivilege 968 msdcsc.exe Token: SeChangeNotifyPrivilege 968 msdcsc.exe Token: SeRemoteShutdownPrivilege 968 msdcsc.exe Token: SeUndockPrivilege 968 msdcsc.exe Token: SeManageVolumePrivilege 968 msdcsc.exe Token: SeImpersonatePrivilege 968 msdcsc.exe Token: SeCreateGlobalPrivilege 968 msdcsc.exe Token: 33 968 msdcsc.exe Token: 34 968 msdcsc.exe Token: 35 968 msdcsc.exe Token: 36 968 msdcsc.exe Token: SeIncreaseQuotaPrivilege 2764 iexplore.exe Token: SeSecurityPrivilege 2764 iexplore.exe Token: SeTakeOwnershipPrivilege 2764 iexplore.exe Token: SeLoadDriverPrivilege 2764 iexplore.exe Token: SeSystemProfilePrivilege 2764 iexplore.exe Token: SeSystemtimePrivilege 2764 iexplore.exe Token: SeProfSingleProcessPrivilege 2764 iexplore.exe Token: SeIncBasePriorityPrivilege 2764 iexplore.exe Token: SeCreatePagefilePrivilege 2764 iexplore.exe Token: SeBackupPrivilege 2764 iexplore.exe Token: SeRestorePrivilege 2764 iexplore.exe Token: SeShutdownPrivilege 2764 iexplore.exe Token: SeDebugPrivilege 2764 iexplore.exe Token: SeSystemEnvironmentPrivilege 2764 iexplore.exe Token: SeChangeNotifyPrivilege 2764 iexplore.exe Token: SeRemoteShutdownPrivilege 2764 iexplore.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
iexplore.exepid process 2764 iexplore.exe -
Suspicious use of WriteProcessMemory 42 IoCs
Processes:
417dd0fc267b52a099e6d21e2f587448.execmd.execmd.exemsdcsc.exeiexplore.exedescription pid process target process PID 1112 wrote to memory of 3876 1112 417dd0fc267b52a099e6d21e2f587448.exe cmd.exe PID 1112 wrote to memory of 3876 1112 417dd0fc267b52a099e6d21e2f587448.exe cmd.exe PID 1112 wrote to memory of 3876 1112 417dd0fc267b52a099e6d21e2f587448.exe cmd.exe PID 1112 wrote to memory of 3220 1112 417dd0fc267b52a099e6d21e2f587448.exe cmd.exe PID 1112 wrote to memory of 3220 1112 417dd0fc267b52a099e6d21e2f587448.exe cmd.exe PID 1112 wrote to memory of 3220 1112 417dd0fc267b52a099e6d21e2f587448.exe cmd.exe PID 3876 wrote to memory of 3244 3876 cmd.exe attrib.exe PID 3876 wrote to memory of 3244 3876 cmd.exe attrib.exe PID 3876 wrote to memory of 3244 3876 cmd.exe attrib.exe PID 3220 wrote to memory of 420 3220 cmd.exe attrib.exe PID 3220 wrote to memory of 420 3220 cmd.exe attrib.exe PID 3220 wrote to memory of 420 3220 cmd.exe attrib.exe PID 1112 wrote to memory of 968 1112 417dd0fc267b52a099e6d21e2f587448.exe msdcsc.exe PID 1112 wrote to memory of 968 1112 417dd0fc267b52a099e6d21e2f587448.exe msdcsc.exe PID 1112 wrote to memory of 968 1112 417dd0fc267b52a099e6d21e2f587448.exe msdcsc.exe PID 968 wrote to memory of 2764 968 msdcsc.exe iexplore.exe PID 968 wrote to memory of 2764 968 msdcsc.exe iexplore.exe PID 968 wrote to memory of 2764 968 msdcsc.exe iexplore.exe PID 968 wrote to memory of 2764 968 msdcsc.exe iexplore.exe PID 968 wrote to memory of 2764 968 msdcsc.exe iexplore.exe PID 2764 wrote to memory of 3236 2764 iexplore.exe notepad.exe PID 2764 wrote to memory of 3236 2764 iexplore.exe notepad.exe PID 2764 wrote to memory of 3236 2764 iexplore.exe notepad.exe PID 2764 wrote to memory of 3236 2764 iexplore.exe notepad.exe PID 2764 wrote to memory of 3236 2764 iexplore.exe notepad.exe PID 2764 wrote to memory of 3236 2764 iexplore.exe notepad.exe PID 2764 wrote to memory of 3236 2764 iexplore.exe notepad.exe PID 2764 wrote to memory of 3236 2764 iexplore.exe notepad.exe PID 2764 wrote to memory of 3236 2764 iexplore.exe notepad.exe PID 2764 wrote to memory of 3236 2764 iexplore.exe notepad.exe PID 2764 wrote to memory of 3236 2764 iexplore.exe notepad.exe PID 2764 wrote to memory of 3236 2764 iexplore.exe notepad.exe PID 2764 wrote to memory of 3236 2764 iexplore.exe notepad.exe PID 2764 wrote to memory of 3236 2764 iexplore.exe notepad.exe PID 2764 wrote to memory of 3236 2764 iexplore.exe notepad.exe PID 2764 wrote to memory of 3236 2764 iexplore.exe notepad.exe PID 2764 wrote to memory of 3236 2764 iexplore.exe notepad.exe PID 2764 wrote to memory of 3236 2764 iexplore.exe notepad.exe PID 2764 wrote to memory of 3236 2764 iexplore.exe notepad.exe PID 2764 wrote to memory of 3236 2764 iexplore.exe notepad.exe PID 2764 wrote to memory of 3236 2764 iexplore.exe notepad.exe PID 2764 wrote to memory of 3236 2764 iexplore.exe notepad.exe -
System policy modification 1 TTPs 3 IoCs
Processes:
msdcsc.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\CurrentVersion\Explorern\NoControlPanel = "1" msdcsc.exe 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 -
Views/modifies file attributes 1 TTPs 2 IoCs
Processes:
attrib.exeattrib.exepid process 3244 attrib.exe 420 attrib.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\417dd0fc267b52a099e6d21e2f587448.exe"C:\Users\Admin\AppData\Local\Temp\417dd0fc267b52a099e6d21e2f587448.exe"1⤵
- Modifies WinLogon for persistence
- Checks computer location settings
- Adds Run key to start application
- Modifies registry class
- 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\417dd0fc267b52a099e6d21e2f587448.exe" +s +h2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\attrib.exeattrib "C:\Users\Admin\AppData\Local\Temp\417dd0fc267b52a099e6d21e2f587448.exe" +s +h3⤵
- 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⤵
- Views/modifies file attributes
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C:\ProgramData\Microsoft\Windows\Start Menu\MSDCSC\msdcsc.exe"C:\ProgramData\Microsoft\Windows\Start Menu\MSDCSC\msdcsc.exe"2⤵
- Modifies firewall policy service
- Modifies security service
- 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 firewall policy service
- Modifies security service
- 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⤵
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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C:\ProgramData\Microsoft\Windows\Start Menu\MSDCSC\msdcsc.exeMD5
d87a0b6ff3b80619eff6a91dcbbc92f2
SHA12bd496d9718547ba4ff87aab82ef78e7d020b586
SHA256bdca22b50a716ac1106fce8eb7fbb0df989bbf381329e952d16be68dc01c6477
SHA512da4d7b6ddb9ac15f82ed0e9452e4e90e474c3b22a2b4eb859f3e34033676d1e6e117278a1c65a22ba27a3ba4199c8b5334b8d036d139a3e5071f917c8026df1e
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C:\ProgramData\Microsoft\Windows\Start Menu\MSDCSC\msdcsc.exeMD5
d87a0b6ff3b80619eff6a91dcbbc92f2
SHA12bd496d9718547ba4ff87aab82ef78e7d020b586
SHA256bdca22b50a716ac1106fce8eb7fbb0df989bbf381329e952d16be68dc01c6477
SHA512da4d7b6ddb9ac15f82ed0e9452e4e90e474c3b22a2b4eb859f3e34033676d1e6e117278a1c65a22ba27a3ba4199c8b5334b8d036d139a3e5071f917c8026df1e
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memory/420-3-0x0000000000000000-mapping.dmp
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memory/968-4-0x0000000000000000-mapping.dmp
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memory/2764-8-0x00000000004B5820-mapping.dmp
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memory/2764-7-0x0000000000400000-0x00000000004B7000-memory.dmpFilesize
732KB
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memory/2764-9-0x0000000000400000-0x00000000004B7000-memory.dmpFilesize
732KB
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memory/2764-10-0x0000000000400000-0x00000000004B7000-memory.dmpFilesize
732KB
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memory/3220-1-0x0000000000000000-mapping.dmp
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memory/3236-11-0x0000000000000000-mapping.dmp
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memory/3236-12-0x0000000000730000-0x0000000000731000-memory.dmpFilesize
4KB
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memory/3236-13-0x0000000000000000-mapping.dmp
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memory/3244-2-0x0000000000000000-mapping.dmp
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memory/3876-0-0x0000000000000000-mapping.dmp