Analysis
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max time kernel
117s -
max time network
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platform
windows10-2004_x64 -
resource
win10v2004-20240802-en -
resource tags
arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system -
submitted
21/09/2024, 13:33
Behavioral task
behavioral1
Sample
cac95b126e4203b143878003b544c175ae0bc201ad54f2be3c4df3a00f17e773N.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
cac95b126e4203b143878003b544c175ae0bc201ad54f2be3c4df3a00f17e773N.exe
Resource
win10v2004-20240802-en
General
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Target
cac95b126e4203b143878003b544c175ae0bc201ad54f2be3c4df3a00f17e773N.exe
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Size
676KB
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MD5
de660c20a214eea81b83b31734caa510
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SHA1
dd3c56b5b1150c66fdeb19d08a9858108f621cec
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SHA256
cac95b126e4203b143878003b544c175ae0bc201ad54f2be3c4df3a00f17e773
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SHA512
4bd1da8209bca16d25e07bbd5636d211a824bef9d7c2dfedcb4bb975d38a08e9d3af16bd0087c2c443358dc660db01ec4b2bc8b9d7c0df0476c9749407fd7456
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SSDEEP
12288:9kiL11aPKT1F5Vs+TVonB7krqRTUWfIVzJVUYMiGx/OHWtWOak:9ki+PKT1F5S7BgORTWJOXBSk
Malware Config
Signatures
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Modifies firewall policy service 3 TTPs 10 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List reg.exe 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 Set value (int) \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DoNotAllowExceptions = "0" reg.exe Set value (str) \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List\C:\Users\Admin\AppData\Roaming\svhost32.exe = "C:\\Users\\Admin\\AppData\\Roaming\\svhost32.exe:*:Enabled:Windows Messanger" reg.exe Key created \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications reg.exe Set value (str) \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List\C:\Users\Admin\AppData\Roaming\csrs.exe = "C:\\Users\\Admin\\AppData\\Roaming\\csrs.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 reg.exe Key created \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List 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-1-5-21-355097885-2402257403-2971294179-1000\Control Panel\International\Geo\Nation cac95b126e4203b143878003b544c175ae0bc201ad54f2be3c4df3a00f17e773N.exe -
Executes dropped EXE 3 IoCs
pid Process 3644 TSNMk.exe 1096 csrs.exe 2924 csrs.exe -
resource yara_rule behavioral2/memory/3928-0-0x0000000000400000-0x00000000005DC000-memory.dmp upx behavioral2/files/0x000800000002346b-7.dat upx behavioral2/memory/3644-10-0x0000000000400000-0x0000000000417000-memory.dmp upx behavioral2/files/0x000900000002346c-25.dat upx behavioral2/memory/3928-38-0x0000000000400000-0x00000000005DC000-memory.dmp upx behavioral2/memory/2924-41-0x0000000000400000-0x000000000045D000-memory.dmp upx behavioral2/memory/2924-44-0x0000000000400000-0x000000000045D000-memory.dmp upx behavioral2/memory/1096-48-0x0000000000400000-0x00000000005DC000-memory.dmp upx behavioral2/memory/2924-46-0x0000000000400000-0x000000000045D000-memory.dmp upx behavioral2/memory/3644-54-0x0000000000400000-0x0000000000417000-memory.dmp upx behavioral2/memory/2924-55-0x0000000000400000-0x000000000045D000-memory.dmp upx behavioral2/memory/2924-59-0x0000000000400000-0x000000000045D000-memory.dmp upx behavioral2/memory/2924-62-0x0000000000400000-0x000000000045D000-memory.dmp upx behavioral2/memory/2924-64-0x0000000000400000-0x000000000045D000-memory.dmp upx behavioral2/memory/2924-66-0x0000000000400000-0x000000000045D000-memory.dmp upx behavioral2/memory/2924-69-0x0000000000400000-0x000000000045D000-memory.dmp upx behavioral2/memory/2924-71-0x0000000000400000-0x000000000045D000-memory.dmp upx behavioral2/memory/2924-73-0x0000000000400000-0x000000000045D000-memory.dmp upx behavioral2/memory/2924-78-0x0000000000400000-0x000000000045D000-memory.dmp upx -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-355097885-2402257403-2971294179-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\csrs = "C:\\Users\\Admin\\AppData\\Roaming\\csrs.exe" reg.exe -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 1096 set thread context of 2924 1096 csrs.exe 88 -
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 14 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 cmd.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language cac95b126e4203b143878003b544c175ae0bc201ad54f2be3c4df3a00f17e773N.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language csrs.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language reg.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language TSNMk.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 cmd.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language csrs.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 cmd.exe -
Modifies registry key 1 TTPs 4 IoCs
pid Process 2500 reg.exe 1764 reg.exe 4568 reg.exe 3904 reg.exe -
Suspicious use of AdjustPrivilegeToken 35 IoCs
description pid Process Token: 1 2924 csrs.exe Token: SeCreateTokenPrivilege 2924 csrs.exe Token: SeAssignPrimaryTokenPrivilege 2924 csrs.exe Token: SeLockMemoryPrivilege 2924 csrs.exe Token: SeIncreaseQuotaPrivilege 2924 csrs.exe Token: SeMachineAccountPrivilege 2924 csrs.exe Token: SeTcbPrivilege 2924 csrs.exe Token: SeSecurityPrivilege 2924 csrs.exe Token: SeTakeOwnershipPrivilege 2924 csrs.exe Token: SeLoadDriverPrivilege 2924 csrs.exe Token: SeSystemProfilePrivilege 2924 csrs.exe Token: SeSystemtimePrivilege 2924 csrs.exe Token: SeProfSingleProcessPrivilege 2924 csrs.exe Token: SeIncBasePriorityPrivilege 2924 csrs.exe Token: SeCreatePagefilePrivilege 2924 csrs.exe Token: SeCreatePermanentPrivilege 2924 csrs.exe Token: SeBackupPrivilege 2924 csrs.exe Token: SeRestorePrivilege 2924 csrs.exe Token: SeShutdownPrivilege 2924 csrs.exe Token: SeDebugPrivilege 2924 csrs.exe Token: SeAuditPrivilege 2924 csrs.exe Token: SeSystemEnvironmentPrivilege 2924 csrs.exe Token: SeChangeNotifyPrivilege 2924 csrs.exe Token: SeRemoteShutdownPrivilege 2924 csrs.exe Token: SeUndockPrivilege 2924 csrs.exe Token: SeSyncAgentPrivilege 2924 csrs.exe Token: SeEnableDelegationPrivilege 2924 csrs.exe Token: SeManageVolumePrivilege 2924 csrs.exe Token: SeImpersonatePrivilege 2924 csrs.exe Token: SeCreateGlobalPrivilege 2924 csrs.exe Token: 31 2924 csrs.exe Token: 32 2924 csrs.exe Token: 33 2924 csrs.exe Token: 34 2924 csrs.exe Token: 35 2924 csrs.exe -
Suspicious use of SetWindowsHookEx 5 IoCs
pid Process 3928 cac95b126e4203b143878003b544c175ae0bc201ad54f2be3c4df3a00f17e773N.exe 1096 csrs.exe 2924 csrs.exe 2924 csrs.exe 2924 csrs.exe -
Suspicious use of WriteProcessMemory 44 IoCs
description pid Process procid_target PID 3928 wrote to memory of 3644 3928 cac95b126e4203b143878003b544c175ae0bc201ad54f2be3c4df3a00f17e773N.exe 82 PID 3928 wrote to memory of 3644 3928 cac95b126e4203b143878003b544c175ae0bc201ad54f2be3c4df3a00f17e773N.exe 82 PID 3928 wrote to memory of 3644 3928 cac95b126e4203b143878003b544c175ae0bc201ad54f2be3c4df3a00f17e773N.exe 82 PID 3928 wrote to memory of 4240 3928 cac95b126e4203b143878003b544c175ae0bc201ad54f2be3c4df3a00f17e773N.exe 84 PID 3928 wrote to memory of 4240 3928 cac95b126e4203b143878003b544c175ae0bc201ad54f2be3c4df3a00f17e773N.exe 84 PID 3928 wrote to memory of 4240 3928 cac95b126e4203b143878003b544c175ae0bc201ad54f2be3c4df3a00f17e773N.exe 84 PID 4240 wrote to memory of 1068 4240 cmd.exe 86 PID 4240 wrote to memory of 1068 4240 cmd.exe 86 PID 4240 wrote to memory of 1068 4240 cmd.exe 86 PID 3928 wrote to memory of 1096 3928 cac95b126e4203b143878003b544c175ae0bc201ad54f2be3c4df3a00f17e773N.exe 87 PID 3928 wrote to memory of 1096 3928 cac95b126e4203b143878003b544c175ae0bc201ad54f2be3c4df3a00f17e773N.exe 87 PID 3928 wrote to memory of 1096 3928 cac95b126e4203b143878003b544c175ae0bc201ad54f2be3c4df3a00f17e773N.exe 87 PID 1096 wrote to memory of 2924 1096 csrs.exe 88 PID 1096 wrote to memory of 2924 1096 csrs.exe 88 PID 1096 wrote to memory of 2924 1096 csrs.exe 88 PID 1096 wrote to memory of 2924 1096 csrs.exe 88 PID 1096 wrote to memory of 2924 1096 csrs.exe 88 PID 1096 wrote to memory of 2924 1096 csrs.exe 88 PID 1096 wrote to memory of 2924 1096 csrs.exe 88 PID 1096 wrote to memory of 2924 1096 csrs.exe 88 PID 2924 wrote to memory of 4080 2924 csrs.exe 89 PID 2924 wrote to memory of 4080 2924 csrs.exe 89 PID 2924 wrote to memory of 4080 2924 csrs.exe 89 PID 2924 wrote to memory of 2928 2924 csrs.exe 90 PID 2924 wrote to memory of 2928 2924 csrs.exe 90 PID 2924 wrote to memory of 2928 2924 csrs.exe 90 PID 2924 wrote to memory of 3188 2924 csrs.exe 91 PID 2924 wrote to memory of 3188 2924 csrs.exe 91 PID 2924 wrote to memory of 3188 2924 csrs.exe 91 PID 2924 wrote to memory of 1512 2924 csrs.exe 93 PID 2924 wrote to memory of 1512 2924 csrs.exe 93 PID 2924 wrote to memory of 1512 2924 csrs.exe 93 PID 2928 wrote to memory of 2500 2928 cmd.exe 97 PID 2928 wrote to memory of 2500 2928 cmd.exe 97 PID 2928 wrote to memory of 2500 2928 cmd.exe 97 PID 4080 wrote to memory of 1764 4080 cmd.exe 98 PID 4080 wrote to memory of 1764 4080 cmd.exe 98 PID 4080 wrote to memory of 1764 4080 cmd.exe 98 PID 3188 wrote to memory of 4568 3188 cmd.exe 99 PID 3188 wrote to memory of 4568 3188 cmd.exe 99 PID 3188 wrote to memory of 4568 3188 cmd.exe 99 PID 1512 wrote to memory of 3904 1512 cmd.exe 100 PID 1512 wrote to memory of 3904 1512 cmd.exe 100 PID 1512 wrote to memory of 3904 1512 cmd.exe 100
Processes
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C:\Users\Admin\AppData\Local\Temp\cac95b126e4203b143878003b544c175ae0bc201ad54f2be3c4df3a00f17e773N.exe"C:\Users\Admin\AppData\Local\Temp\cac95b126e4203b143878003b544c175ae0bc201ad54f2be3c4df3a00f17e773N.exe"1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3928 -
C:\Users\Admin\AppData\Local\Temp\TSNMk.exe"C:\Users\Admin\AppData\Local\Temp\TSNMk.exe"2⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:3644
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C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\eHGsu.bat" "2⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4240 -
C:\Windows\SysWOW64\reg.exeREG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /v "csrs" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\csrs.exe" /f3⤵
- Adds Run key to start application
- System Location Discovery: System Language Discovery
PID:1068
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C:\Users\Admin\AppData\Roaming\csrs.exe"C:\Users\Admin\AppData\Roaming\csrs.exe"2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1096 -
C:\Users\Admin\AppData\Roaming\csrs.exeC:\Users\Admin\AppData\Roaming\csrs.exe3⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2924 -
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:4080 -
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:1764
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C:\Windows\SysWOW64\cmd.execmd /c REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List /v "C:\Users\Admin\AppData\Roaming\csrs.exe" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\csrs.exe:*:Enabled:Windows Messanger" /f4⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2928 -
C:\Windows\SysWOW64\reg.exeREG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List /v "C:\Users\Admin\AppData\Roaming\csrs.exe" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\csrs.exe:*:Enabled:Windows Messanger" /f5⤵
- Modifies firewall policy service
- System Location Discovery: System Language Discovery
- Modifies registry key
PID:2500
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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:3188 -
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:4568
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C:\Windows\SysWOW64\cmd.execmd /c REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List /v "C:\Users\Admin\AppData\Roaming\svhost32.exe" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\svhost32.exe:*:Enabled:Windows Messanger" /f4⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1512 -
C:\Windows\SysWOW64\reg.exeREG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List /v "C:\Users\Admin\AppData\Roaming\svhost32.exe" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\svhost32.exe:*:Enabled:Windows Messanger" /f5⤵
- Modifies firewall policy service
- System Location Discovery: System Language Discovery
- Modifies registry key
PID:3904
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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
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Filesize
12KB
MD5466773bfcbd01059584cdae36e3c281c
SHA181e68615ef27cf363d6fe96582433c8a7ce8043b
SHA25621f0910a1d71dfc63744474b2ba6b8248d893226576ea48791dc0cef7dd52105
SHA5121088e7180a7d4ed717307c03884aebd945c5f78ffd6c4a4d7e84e504dc2da0434fe4173c63f1afd5a57e83e1783b3359ce123e85bb62699fb663bc9b1c02129f
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Filesize
130B
MD534a635bb69f9dc2d8e8ceba2f6b25308
SHA166bbd6b4eb975af0a799c6be7aaed6917f5df10c
SHA256eb18b0e443ffb00db0eb4438c0d3ec49cf67c3b7cbc9da8e25c60298c970a59a
SHA512ae355a265391afe02a37d82ffb0df6664788dc4aee975678aeb524ff47f889d1e5ecab42b073093d71494c9868276dc9794d4bebce4c967d866b189c136a9545
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Filesize
676KB
MD5b1cf1c882d3beac5960f93d0638c1a12
SHA1c7e2d2a6b2115cc791fd449859c688848a937aa2
SHA256dcb89d3c755ffae6585bcdbb438aa9e00c1cfe682c9f246e56a318493c4527a7
SHA51268e5162e4e188b0ddb1121de9df5b3e9adf39a7f7f5bd08604ad9cab263c7f21410c222e012079cb7aa9c07a34b4c53adc24dda859f098ea7b2b6b6a7b9c4dcc