Analysis
- max time kernel
117s - max time network
108s - platform
windows10-2004_x64 - resource
win10v2004-20241007-en - resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system - submitted
08/11/2024, 01:06
Behavioral task
behavioral1
Sample
8ec57e505efc1d90b563f11a1ed5fd4fb7bd7956940190e7ff2a36d46e02df10N.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
8ec57e505efc1d90b563f11a1ed5fd4fb7bd7956940190e7ff2a36d46e02df10N.exe
Resource
win10v2004-20241007-en
General
- Target 8ec57e505efc1d90b563f11a1ed5fd4fb7bd7956940190e7ff2a36d46e02df10N.exe
- Size 269KB
- Sample241108-bglsbstrer
- SHA256 8ec57e505efc1d90b563f11a1ed5fd4fb7bd7956940190e7ff2a36d46e02df10
- MD5 ee87f2f764a7f77015a477158cad4200
- SHA1 7ba475bce7160c7b0878ec243810960b0f1a258f
- SHA512 8e0f458bbc57d5cfcfc4619138cc968677070f5d6ba5f5e629256f920972af2755dc4405f4be95234f3cfc75b8e5348f6c9fb24e32b21ef031e8ba8d6929d003
- SSDEEP 6144:MzNRmFiqQfSNJzpztBIRNz4c91ez5FeGV39HY0ZLyXmLoSX:8cFiJSNLtBI/0tlxYELyOoSX
- MD5 SHA1 SHA512 SSDEEP
Malware Config
Signatures
- Modifies firewall policy service 3 TTPs 10 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile reg.exe Set value (int) \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DoNotAllowExceptions = "0" reg.exe Key created \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List reg.exe Set value (str) \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List\C:\Users\Admin\AppData\Roaming\Windows Updater.exe = "C:\\Users\\Admin\\AppData\\Roaming\\Windows Updater.exe:*:Enabled:Windows Messanger" reg.exe Key created \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile reg.exe Key created \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications reg.exe Key created \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile reg.exe Key created \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List reg.exe Set value (str) \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List\C:\Users\Admin\AppData\Roaming\Windows Update\winupdt.exe = "C:\\Users\\Admin\\AppData\\Roaming\\Windows Update\\winupdt.exe:*:Enabled:Windows Messanger" reg.exe Set value (int) \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DoNotAllowExceptions = "0" reg.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-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation 8ec57e505efc1d90b563f11a1ed5fd4fb7bd7956940190e7ff2a36d46e02df10N.exe - Executes dropped EXE 2 IoCs
pid Process 1648 winupdt.exe 1792 winupdt.exe - Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Window Updates = "C:\\Users\\Admin\\AppData\\Roaming\\Windows Update\\winupdt.exe" reg.exe - Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 1648 set thread context of 1792 1648 winupdt.exe 91 -
resource yara_rule behavioral2/memory/224-0-0x0000000000400000-0x00000000005A7000-memory.dmp upx behavioral2/files/0x000b000000023b6b-16.dat upx behavioral2/memory/224-29-0x0000000000400000-0x00000000005A7000-memory.dmp upx behavioral2/memory/1792-32-0x0000000000400000-0x000000000045C000-memory.dmp upx behavioral2/memory/1792-35-0x0000000000400000-0x000000000045C000-memory.dmp upx behavioral2/memory/1792-39-0x0000000000400000-0x000000000045C000-memory.dmp upx behavioral2/memory/1648-38-0x0000000000400000-0x00000000005A7000-memory.dmp upx behavioral2/memory/1792-45-0x0000000000400000-0x000000000045C000-memory.dmp upx behavioral2/memory/1792-47-0x0000000000400000-0x000000000045C000-memory.dmp upx behavioral2/memory/1792-49-0x0000000000400000-0x000000000045C000-memory.dmp upx behavioral2/memory/1792-50-0x0000000000400000-0x000000000045C000-memory.dmp upx behavioral2/memory/1792-51-0x0000000000400000-0x000000000045C000-memory.dmp upx behavioral2/memory/1792-53-0x0000000000400000-0x000000000045C000-memory.dmp upx behavioral2/memory/1792-54-0x0000000000400000-0x000000000045C000-memory.dmp upx behavioral2/memory/1792-55-0x0000000000400000-0x000000000045C000-memory.dmp upx behavioral2/memory/1792-57-0x0000000000400000-0x000000000045C000-memory.dmp upx behavioral2/memory/1792-58-0x0000000000400000-0x000000000045C000-memory.dmp upx - Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- System Location Discovery: System Language Discovery 1 TTPs 13 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 winupdt.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language cmd.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language cmd.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language cmd.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language reg.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language reg.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 8ec57e505efc1d90b563f11a1ed5fd4fb7bd7956940190e7ff2a36d46e02df10N.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language cmd.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language cmd.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language reg.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language reg.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language reg.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language winupdt.exe - Modifies registry key 1 TTPs 4 IoCs
pid Process 848 reg.exe 3348 reg.exe 4376 reg.exe 2460 reg.exe - Suspicious use of AdjustPrivilegeToken 35 IoCs
description pid Process Token: 1 1792 winupdt.exe Token: SeCreateTokenPrivilege 1792 winupdt.exe Token: SeAssignPrimaryTokenPrivilege 1792 winupdt.exe Token: SeLockMemoryPrivilege 1792 winupdt.exe Token: SeIncreaseQuotaPrivilege 1792 winupdt.exe Token: SeMachineAccountPrivilege 1792 winupdt.exe Token: SeTcbPrivilege 1792 winupdt.exe Token: SeSecurityPrivilege 1792 winupdt.exe Token: SeTakeOwnershipPrivilege 1792 winupdt.exe Token: SeLoadDriverPrivilege 1792 winupdt.exe Token: SeSystemProfilePrivilege 1792 winupdt.exe Token: SeSystemtimePrivilege 1792 winupdt.exe Token: SeProfSingleProcessPrivilege 1792 winupdt.exe Token: SeIncBasePriorityPrivilege 1792 winupdt.exe Token: SeCreatePagefilePrivilege 1792 winupdt.exe Token: SeCreatePermanentPrivilege 1792 winupdt.exe Token: SeBackupPrivilege 1792 winupdt.exe Token: SeRestorePrivilege 1792 winupdt.exe Token: SeShutdownPrivilege 1792 winupdt.exe Token: SeDebugPrivilege 1792 winupdt.exe Token: SeAuditPrivilege 1792 winupdt.exe Token: SeSystemEnvironmentPrivilege 1792 winupdt.exe Token: SeChangeNotifyPrivilege 1792 winupdt.exe Token: SeRemoteShutdownPrivilege 1792 winupdt.exe Token: SeUndockPrivilege 1792 winupdt.exe Token: SeSyncAgentPrivilege 1792 winupdt.exe Token: SeEnableDelegationPrivilege 1792 winupdt.exe Token: SeManageVolumePrivilege 1792 winupdt.exe Token: SeImpersonatePrivilege 1792 winupdt.exe Token: SeCreateGlobalPrivilege 1792 winupdt.exe Token: 31 1792 winupdt.exe Token: 32 1792 winupdt.exe Token: 33 1792 winupdt.exe Token: 34 1792 winupdt.exe Token: 35 1792 winupdt.exe - Suspicious use of SetWindowsHookEx 5 IoCs
pid Process 224 8ec57e505efc1d90b563f11a1ed5fd4fb7bd7956940190e7ff2a36d46e02df10N.exe 1648 winupdt.exe 1792 winupdt.exe 1792 winupdt.exe 1792 winupdt.exe - Suspicious use of WriteProcessMemory 41 IoCs
description pid Process procid_target PID 224 wrote to memory of 4604 224 8ec57e505efc1d90b563f11a1ed5fd4fb7bd7956940190e7ff2a36d46e02df10N.exe 86 PID 224 wrote to memory of 4604 224 8ec57e505efc1d90b563f11a1ed5fd4fb7bd7956940190e7ff2a36d46e02df10N.exe 86 PID 224 wrote to memory of 4604 224 8ec57e505efc1d90b563f11a1ed5fd4fb7bd7956940190e7ff2a36d46e02df10N.exe 86 PID 4604 wrote to memory of 1984 4604 cmd.exe 89 PID 4604 wrote to memory of 1984 4604 cmd.exe 89 PID 4604 wrote to memory of 1984 4604 cmd.exe 89 PID 224 wrote to memory of 1648 224 8ec57e505efc1d90b563f11a1ed5fd4fb7bd7956940190e7ff2a36d46e02df10N.exe 90 PID 224 wrote to memory of 1648 224 8ec57e505efc1d90b563f11a1ed5fd4fb7bd7956940190e7ff2a36d46e02df10N.exe 90 PID 224 wrote to memory of 1648 224 8ec57e505efc1d90b563f11a1ed5fd4fb7bd7956940190e7ff2a36d46e02df10N.exe 90 PID 1648 wrote to memory of 1792 1648 winupdt.exe 91 PID 1648 wrote to memory of 1792 1648 winupdt.exe 91 PID 1648 wrote to memory of 1792 1648 winupdt.exe 91 PID 1648 wrote to memory of 1792 1648 winupdt.exe 91 PID 1648 wrote to memory of 1792 1648 winupdt.exe 91 PID 1648 wrote to memory of 1792 1648 winupdt.exe 91 PID 1648 wrote to memory of 1792 1648 winupdt.exe 91 PID 1648 wrote to memory of 1792 1648 winupdt.exe 91 PID 1792 wrote to memory of 3908 1792 winupdt.exe 92 PID 1792 wrote to memory of 3908 1792 winupdt.exe 92 PID 1792 wrote to memory of 3908 1792 winupdt.exe 92 PID 1792 wrote to memory of 3940 1792 winupdt.exe 93 PID 1792 wrote to memory of 3940 1792 winupdt.exe 93 PID 1792 wrote to memory of 3940 1792 winupdt.exe 93 PID 1792 wrote to memory of 3628 1792 winupdt.exe 94 PID 1792 wrote to memory of 3628 1792 winupdt.exe 94 PID 1792 wrote to memory of 3628 1792 winupdt.exe 94 PID 1792 wrote to memory of 3548 1792 winupdt.exe 95 PID 1792 wrote to memory of 3548 1792 winupdt.exe 95 PID 1792 wrote to memory of 3548 1792 winupdt.exe 95 PID 3940 wrote to memory of 848 3940 cmd.exe 101 PID 3940 wrote to memory of 848 3940 cmd.exe 101 PID 3940 wrote to memory of 848 3940 cmd.exe 101 PID 3908 wrote to memory of 3348 3908 cmd.exe 100 PID 3908 wrote to memory of 3348 3908 cmd.exe 100 PID 3908 wrote to memory of 3348 3908 cmd.exe 100 PID 3548 wrote to memory of 4376 3548 cmd.exe 102 PID 3548 wrote to memory of 4376 3548 cmd.exe 102 PID 3548 wrote to memory of 4376 3548 cmd.exe 102 PID 3628 wrote to memory of 2460 3628 cmd.exe 103 PID 3628 wrote to memory of 2460 3628 cmd.exe 103 PID 3628 wrote to memory of 2460 3628 cmd.exe 103
Processes
-
C:\Users\Admin\AppData\Local\Temp\8ec57e505efc1d90b563f11a1ed5fd4fb7bd7956940190e7ff2a36d46e02df10N.exe"C:\Users\Admin\AppData\Local\Temp\8ec57e505efc1d90b563f11a1ed5fd4fb7bd7956940190e7ff2a36d46e02df10N.exe"1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:224 -
C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\eXVQA.bat" "2⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4604 -
C:\Windows\SysWOW64\reg.exeREG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /v "Window Updates" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\Windows Update\winupdt.exe" /f3⤵
- Adds Run key to start application
- System Location Discovery: System Language Discovery
PID:1984
-
-
-
C:\Users\Admin\AppData\Roaming\Windows Update\winupdt.exe"C:\Users\Admin\AppData\Roaming\Windows Update\winupdt.exe"2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1648 -
C:\Users\Admin\AppData\Roaming\Windows Update\winupdt.exe"C:\Users\Admin\AppData\Roaming\Windows Update\winupdt.exe"3⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1792 -
C:\Windows\SysWOW64\cmd.execmd /c REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile /v "DoNotAllowExceptions" /t REG_DWORD /d "0" /f4⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3908 -
C:\Windows\SysWOW64\reg.exeREG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile /v "DoNotAllowExceptions" /t REG_DWORD /d "0" /f5⤵
- Modifies firewall policy service
- System Location Discovery: System Language Discovery
- Modifies registry key
PID:3348
-
-
-
C:\Windows\SysWOW64\cmd.execmd /c REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List /v "C:\Users\Admin\AppData\Roaming\Windows Update\winupdt.exe" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\Windows Update\winupdt.exe:*:Enabled:Windows Messanger" /f4⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3940 -
C:\Windows\SysWOW64\reg.exeREG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List /v "C:\Users\Admin\AppData\Roaming\Windows Update\winupdt.exe" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\Windows Update\winupdt.exe:*:Enabled:Windows Messanger" /f5⤵
- Modifies firewall policy service
- System Location Discovery: System Language Discovery
- Modifies registry key
PID:848
-
-
-
C:\Windows\SysWOW64\cmd.execmd /c REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile /v "DoNotAllowExceptions" /t REG_DWORD /d "0" /f4⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3628 -
C:\Windows\SysWOW64\reg.exeREG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile /v "DoNotAllowExceptions" /t REG_DWORD /d "0" /f5⤵
- Modifies firewall policy service
- System Location Discovery: System Language Discovery
- Modifies registry key
PID:2460
-
-
-
C:\Windows\SysWOW64\cmd.execmd /c REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List /v "C:\Users\Admin\AppData\Roaming\Windows Updater.exe" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\Windows Updater.exe:*:Enabled:Windows Messanger" /f4⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3548 -
C:\Windows\SysWOW64\reg.exeREG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List /v "C:\Users\Admin\AppData\Roaming\Windows Updater.exe" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\Windows Updater.exe:*:Enabled:Windows Messanger" /f5⤵
- Modifies firewall policy service
- System Location Discovery: System Language Discovery
- Modifies registry key
PID:4376
-
-
-
-
Network
MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
1Windows Service
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
1Windows Service
1Defense Evasion
Impair Defenses
1Disable or Modify System Firewall
1Modify Registry
3Replay Monitor
Loading Replay Monitor...
Downloads
- Path C:\Users\Admin\AppData\Local\Temp\eXVQA.txt
- Size 158B
- SHA256 35e0dbc8b455ca38976157ce9d0293fd6cdca20f46f1cb69058a1e0f0af6f693
- MD5 1954c7e666c5b4d1117ef07bc0c9b8ec
- SHA1 559e3c0273c1463e9184027b749bdaad0a372681
- SHA512 3939de8d0ab7e67b59ff8bebed5580dafd38d8785193fd42a289728500761a68b9e6660605e19e10d4278dd106fea4b273a208f25485e7389c8f19b2958c926a
- MD5 SHA1 SHA512
- Path C:\Users\Admin\AppData\Roaming\Windows Update\winupdt.txt
- Size 269KB
- SHA256 8d8e4be8540843a74cdd31c6accb50dd8930ecdb971c7e8db3bd8dba784c6136
- MD5 721e6ef89ce7359a4a14959f06afd8b6
- SHA1 1d0649185f4b67cc1c6883cc3885d39aedf4bfc3
- SHA512 ac785a9ab2341a087daeeb052cd50622669c51383ac27de425cd9012f9a2ca66104099c1c0c19b347cb8650766ed2d73b891d371bba88af83bbf7d88045e2187
- SSDEEP 6144:MzNRmFiqQfSNJzpztBIRNz4c91ez5FeGV39HY0ZLyXmLoSE:8cFiJSNLtBI/0tlxYELyOoSE
- MD5 SHA1 SHA512 SSDEEP