Analysis
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max time kernel
150s -
max time network
146s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
16-12-2024 04:59
Behavioral task
behavioral1
Sample
fc42dba54aad4d62a0e50112ef6cda210285f7fb1f388dc1a6ac6fab99335ba7.exe
Resource
win7-20240903-en
windows7-x64
22 signatures
150 seconds
General
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Target
fc42dba54aad4d62a0e50112ef6cda210285f7fb1f388dc1a6ac6fab99335ba7.exe
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Size
1.6MB
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MD5
d05d8198490af311c08159b1d19801e3
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SHA1
d8e458d94e97e0f4270ed76798cb53741094762c
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SHA256
fc42dba54aad4d62a0e50112ef6cda210285f7fb1f388dc1a6ac6fab99335ba7
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SHA512
d74f98ef1a24a8589e8c525b2848e8d4f78f412227fb3979c48d79d3b4a8428e9a30c4de0b01db301cec21f71f0ea36d8b599191236759128aec3ed382fe2490
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SSDEEP
49152:biRnatOaP7Y9k0wK7/l20+FxyqfuXBO15oAlwmSiNL:biotxPWk0wKzllEyIcBO1yAlJS
Malware Config
Extracted
Family
darkcomet
Botnet
Sazan
C2
95.173.236.101:1604
Mutex
DC_MUTEX-QVKEB01
Attributes
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InstallPath
MSDCSC\msdcsc.exe
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gencode
L14htyU8W4iS
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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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Darkcomet family
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Modifies WinLogon for persistence 2 TTPs 1 IoCs
description 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" fc42dba54aad4d62a0e50112ef6cda210285f7fb1f388dc1a6ac6fab99335ba7.exe -
Modifies firewall policy service 3 TTPs 3 IoCs
description 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 -
Modifies security service 2 TTPs 1 IoCs
description ioc Process Set value (int) \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\wscsvc\Start = "4" msdcsc.exe -
description 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 -
Disables RegEdit via registry modification 1 IoCs
description ioc Process Set value (int) \REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1" msdcsc.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation fc42dba54aad4d62a0e50112ef6cda210285f7fb1f388dc1a6ac6fab99335ba7.exe -
Executes dropped EXE 2 IoCs
pid Process 4156 EXTREME INJECTOR V3.EXE 3528 msdcsc.exe -
description ioc Process 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" msdcsc.exe -
Adds Run key to start application 2 TTPs 2 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Windows\\system32\\MSDCSC\\msdcsc.exe" fc42dba54aad4d62a0e50112ef6cda210285f7fb1f388dc1a6ac6fab99335ba7.exe Set value (str) \REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Windows\\system32\\MSDCSC\\msdcsc.exe" msdcsc.exe -
Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs
flow ioc 8 raw.githubusercontent.com 9 raw.githubusercontent.com -
Drops file in System32 directory 3 IoCs
description ioc Process File created C:\Windows\SysWOW64\MSDCSC\msdcsc.exe fc42dba54aad4d62a0e50112ef6cda210285f7fb1f388dc1a6ac6fab99335ba7.exe File opened for modification C:\Windows\SysWOW64\MSDCSC\msdcsc.exe fc42dba54aad4d62a0e50112ef6cda210285f7fb1f388dc1a6ac6fab99335ba7.exe File opened for modification C:\Windows\SysWOW64\MSDCSC\ fc42dba54aad4d62a0e50112ef6cda210285f7fb1f388dc1a6ac6fab99335ba7.exe -
resource yara_rule behavioral2/memory/3320-0-0x0000000000400000-0x00000000006A0000-memory.dmp upx behavioral2/files/0x000e000000023a3a-20.dat upx behavioral2/memory/3320-33-0x0000000000400000-0x00000000006A0000-memory.dmp upx behavioral2/memory/3528-37-0x0000000000400000-0x00000000006A0000-memory.dmp upx behavioral2/memory/3528-41-0x0000000000400000-0x00000000006A0000-memory.dmp upx behavioral2/memory/3528-45-0x0000000000400000-0x00000000006A0000-memory.dmp upx behavioral2/memory/3528-49-0x0000000000400000-0x00000000006A0000-memory.dmp upx behavioral2/memory/3528-53-0x0000000000400000-0x00000000006A0000-memory.dmp upx behavioral2/memory/3528-57-0x0000000000400000-0x00000000006A0000-memory.dmp upx behavioral2/memory/3528-61-0x0000000000400000-0x00000000006A0000-memory.dmp upx -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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System Location Discovery: System Language Discovery 1 TTPs 3 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language msdcsc.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language notepad.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language fc42dba54aad4d62a0e50112ef6cda210285f7fb1f388dc1a6ac6fab99335ba7.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 3528 msdcsc.exe -
Suspicious use of AdjustPrivilegeToken 64 IoCs
description pid Process Token: SeIncreaseQuotaPrivilege 3320 fc42dba54aad4d62a0e50112ef6cda210285f7fb1f388dc1a6ac6fab99335ba7.exe Token: SeSecurityPrivilege 3320 fc42dba54aad4d62a0e50112ef6cda210285f7fb1f388dc1a6ac6fab99335ba7.exe Token: SeTakeOwnershipPrivilege 3320 fc42dba54aad4d62a0e50112ef6cda210285f7fb1f388dc1a6ac6fab99335ba7.exe Token: SeLoadDriverPrivilege 3320 fc42dba54aad4d62a0e50112ef6cda210285f7fb1f388dc1a6ac6fab99335ba7.exe Token: SeSystemProfilePrivilege 3320 fc42dba54aad4d62a0e50112ef6cda210285f7fb1f388dc1a6ac6fab99335ba7.exe Token: SeSystemtimePrivilege 3320 fc42dba54aad4d62a0e50112ef6cda210285f7fb1f388dc1a6ac6fab99335ba7.exe Token: SeProfSingleProcessPrivilege 3320 fc42dba54aad4d62a0e50112ef6cda210285f7fb1f388dc1a6ac6fab99335ba7.exe Token: SeIncBasePriorityPrivilege 3320 fc42dba54aad4d62a0e50112ef6cda210285f7fb1f388dc1a6ac6fab99335ba7.exe Token: SeCreatePagefilePrivilege 3320 fc42dba54aad4d62a0e50112ef6cda210285f7fb1f388dc1a6ac6fab99335ba7.exe Token: SeBackupPrivilege 3320 fc42dba54aad4d62a0e50112ef6cda210285f7fb1f388dc1a6ac6fab99335ba7.exe Token: SeRestorePrivilege 3320 fc42dba54aad4d62a0e50112ef6cda210285f7fb1f388dc1a6ac6fab99335ba7.exe Token: SeShutdownPrivilege 3320 fc42dba54aad4d62a0e50112ef6cda210285f7fb1f388dc1a6ac6fab99335ba7.exe Token: SeDebugPrivilege 3320 fc42dba54aad4d62a0e50112ef6cda210285f7fb1f388dc1a6ac6fab99335ba7.exe Token: SeSystemEnvironmentPrivilege 3320 fc42dba54aad4d62a0e50112ef6cda210285f7fb1f388dc1a6ac6fab99335ba7.exe Token: SeChangeNotifyPrivilege 3320 fc42dba54aad4d62a0e50112ef6cda210285f7fb1f388dc1a6ac6fab99335ba7.exe Token: SeRemoteShutdownPrivilege 3320 fc42dba54aad4d62a0e50112ef6cda210285f7fb1f388dc1a6ac6fab99335ba7.exe Token: SeUndockPrivilege 3320 fc42dba54aad4d62a0e50112ef6cda210285f7fb1f388dc1a6ac6fab99335ba7.exe Token: SeManageVolumePrivilege 3320 fc42dba54aad4d62a0e50112ef6cda210285f7fb1f388dc1a6ac6fab99335ba7.exe Token: SeImpersonatePrivilege 3320 fc42dba54aad4d62a0e50112ef6cda210285f7fb1f388dc1a6ac6fab99335ba7.exe Token: SeCreateGlobalPrivilege 3320 fc42dba54aad4d62a0e50112ef6cda210285f7fb1f388dc1a6ac6fab99335ba7.exe Token: 33 3320 fc42dba54aad4d62a0e50112ef6cda210285f7fb1f388dc1a6ac6fab99335ba7.exe Token: 34 3320 fc42dba54aad4d62a0e50112ef6cda210285f7fb1f388dc1a6ac6fab99335ba7.exe Token: 35 3320 fc42dba54aad4d62a0e50112ef6cda210285f7fb1f388dc1a6ac6fab99335ba7.exe Token: 36 3320 fc42dba54aad4d62a0e50112ef6cda210285f7fb1f388dc1a6ac6fab99335ba7.exe Token: SeDebugPrivilege 4156 EXTREME INJECTOR V3.EXE Token: 33 4156 EXTREME INJECTOR V3.EXE Token: SeIncBasePriorityPrivilege 4156 EXTREME INJECTOR V3.EXE Token: SeIncreaseQuotaPrivilege 3528 msdcsc.exe Token: SeSecurityPrivilege 3528 msdcsc.exe Token: SeTakeOwnershipPrivilege 3528 msdcsc.exe Token: SeLoadDriverPrivilege 3528 msdcsc.exe Token: SeSystemProfilePrivilege 3528 msdcsc.exe Token: SeSystemtimePrivilege 3528 msdcsc.exe Token: SeProfSingleProcessPrivilege 3528 msdcsc.exe Token: SeIncBasePriorityPrivilege 3528 msdcsc.exe Token: SeCreatePagefilePrivilege 3528 msdcsc.exe Token: SeBackupPrivilege 3528 msdcsc.exe Token: SeRestorePrivilege 3528 msdcsc.exe Token: SeShutdownPrivilege 3528 msdcsc.exe Token: SeDebugPrivilege 3528 msdcsc.exe Token: SeSystemEnvironmentPrivilege 3528 msdcsc.exe Token: SeChangeNotifyPrivilege 3528 msdcsc.exe Token: SeRemoteShutdownPrivilege 3528 msdcsc.exe Token: SeUndockPrivilege 3528 msdcsc.exe Token: SeManageVolumePrivilege 3528 msdcsc.exe Token: SeImpersonatePrivilege 3528 msdcsc.exe Token: SeCreateGlobalPrivilege 3528 msdcsc.exe Token: 33 3528 msdcsc.exe Token: 34 3528 msdcsc.exe Token: 35 3528 msdcsc.exe Token: 36 3528 msdcsc.exe Token: SeDebugPrivilege 4156 EXTREME INJECTOR V3.EXE Token: 33 4156 EXTREME INJECTOR V3.EXE Token: SeIncBasePriorityPrivilege 4156 EXTREME INJECTOR V3.EXE Token: 33 4156 EXTREME INJECTOR V3.EXE Token: SeIncBasePriorityPrivilege 4156 EXTREME INJECTOR V3.EXE Token: 33 4156 EXTREME INJECTOR V3.EXE Token: SeIncBasePriorityPrivilege 4156 EXTREME INJECTOR V3.EXE Token: 33 4156 EXTREME INJECTOR V3.EXE Token: SeIncBasePriorityPrivilege 4156 EXTREME INJECTOR V3.EXE Token: 33 4156 EXTREME INJECTOR V3.EXE Token: SeIncBasePriorityPrivilege 4156 EXTREME INJECTOR V3.EXE Token: 33 4156 EXTREME INJECTOR V3.EXE Token: SeIncBasePriorityPrivilege 4156 EXTREME INJECTOR V3.EXE -
Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 3528 msdcsc.exe -
Suspicious use of WriteProcessMemory 32 IoCs
description pid Process procid_target PID 3320 wrote to memory of 4156 3320 fc42dba54aad4d62a0e50112ef6cda210285f7fb1f388dc1a6ac6fab99335ba7.exe 84 PID 3320 wrote to memory of 4156 3320 fc42dba54aad4d62a0e50112ef6cda210285f7fb1f388dc1a6ac6fab99335ba7.exe 84 PID 3320 wrote to memory of 3528 3320 fc42dba54aad4d62a0e50112ef6cda210285f7fb1f388dc1a6ac6fab99335ba7.exe 85 PID 3320 wrote to memory of 3528 3320 fc42dba54aad4d62a0e50112ef6cda210285f7fb1f388dc1a6ac6fab99335ba7.exe 85 PID 3320 wrote to memory of 3528 3320 fc42dba54aad4d62a0e50112ef6cda210285f7fb1f388dc1a6ac6fab99335ba7.exe 85 PID 3528 wrote to memory of 1500 3528 msdcsc.exe 86 PID 3528 wrote to memory of 1500 3528 msdcsc.exe 86 PID 3528 wrote to memory of 1500 3528 msdcsc.exe 86 PID 3528 wrote to memory of 4336 3528 msdcsc.exe 87 PID 3528 wrote to memory of 4336 3528 msdcsc.exe 87 PID 3528 wrote to memory of 2236 3528 msdcsc.exe 88 PID 3528 wrote to memory of 2236 3528 msdcsc.exe 88 PID 3528 wrote to memory of 2236 3528 msdcsc.exe 88 PID 3528 wrote to memory of 2236 3528 msdcsc.exe 88 PID 3528 wrote to memory of 2236 3528 msdcsc.exe 88 PID 3528 wrote to memory of 2236 3528 msdcsc.exe 88 PID 3528 wrote to memory of 2236 3528 msdcsc.exe 88 PID 3528 wrote to memory of 2236 3528 msdcsc.exe 88 PID 3528 wrote to memory of 2236 3528 msdcsc.exe 88 PID 3528 wrote to memory of 2236 3528 msdcsc.exe 88 PID 3528 wrote to memory of 2236 3528 msdcsc.exe 88 PID 3528 wrote to memory of 2236 3528 msdcsc.exe 88 PID 3528 wrote to memory of 2236 3528 msdcsc.exe 88 PID 3528 wrote to memory of 2236 3528 msdcsc.exe 88 PID 3528 wrote to memory of 2236 3528 msdcsc.exe 88 PID 3528 wrote to memory of 2236 3528 msdcsc.exe 88 PID 3528 wrote to memory of 2236 3528 msdcsc.exe 88 PID 3528 wrote to memory of 2236 3528 msdcsc.exe 88 PID 3528 wrote to memory of 2236 3528 msdcsc.exe 88 PID 3528 wrote to memory of 2236 3528 msdcsc.exe 88 PID 3528 wrote to memory of 2236 3528 msdcsc.exe 88 PID 3528 wrote to memory of 2236 3528 msdcsc.exe 88 -
System policy modification 1 TTPs 3 IoCs
description 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
Processes
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C:\Users\Admin\AppData\Local\Temp\fc42dba54aad4d62a0e50112ef6cda210285f7fb1f388dc1a6ac6fab99335ba7.exe"C:\Users\Admin\AppData\Local\Temp\fc42dba54aad4d62a0e50112ef6cda210285f7fb1f388dc1a6ac6fab99335ba7.exe"1⤵
- Modifies WinLogon for persistence
- Checks computer location settings
- Adds Run key to start application
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3320 -
C:\Users\Admin\AppData\Local\Temp\EXTREME INJECTOR V3.EXE"C:\Users\Admin\AppData\Local\Temp\EXTREME INJECTOR V3.EXE"2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4156
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C:\Windows\SysWOW64\MSDCSC\msdcsc.exe"C:\Windows\system32\MSDCSC\msdcsc.exe"2⤵
- Modifies firewall policy service
- Modifies security service
- Windows security bypass
- Disables RegEdit via registry modification
- Executes dropped EXE
- Windows security modification
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
- System policy modification
PID:3528 -
C:\Program Files (x86)\Internet Explorer\iexplore.exe"C:\Program Files (x86)\Internet Explorer\iexplore.exe"3⤵PID:1500
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C:\Windows\explorer.exe"C:\Windows\explorer.exe"3⤵PID:4336
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C:\Windows\SysWOW64\notepad.exenotepad3⤵
- System Location Discovery: System Language Discovery
PID:2236
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Network
MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
1Winlogon Helper DLL
1Create or Modify System Process
2Windows Service
2Privilege Escalation
Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
1Winlogon Helper DLL
1Create or Modify System Process
2Windows Service
2Defense Evasion
Impair Defenses
3Disable or Modify System Firewall
1Disable or Modify Tools
2Modify Registry
7Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
1.9MB
MD5ec801a7d4b72a288ec6c207bb9ff0131
SHA132eec2ae1f9e201516fa7fcdc16c4928f7997561
SHA256b65f40618f584303ca0bcf9b5f88c233cc4237699c0c4bf40ba8facbe8195a46
SHA512a07dd5e8241de73ce65ff8d74acef4942b85fc45cf6a7baafd3c0f9d330b08e7412f2023ba667e99b40e732a65e8fb4389f7fe73c7b6256ca71e63afe46cdcac
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Filesize
1.6MB
MD5d05d8198490af311c08159b1d19801e3
SHA1d8e458d94e97e0f4270ed76798cb53741094762c
SHA256fc42dba54aad4d62a0e50112ef6cda210285f7fb1f388dc1a6ac6fab99335ba7
SHA512d74f98ef1a24a8589e8c525b2848e8d4f78f412227fb3979c48d79d3b4a8428e9a30c4de0b01db301cec21f71f0ea36d8b599191236759128aec3ed382fe2490