Analysis
- max time kernel
119s - max time network
118s - platform
windows7_x64 - resource
win7-en-20210920 - submitted
08/10/2021, 04:37
Static task
static1
Behavioral task
behavioral1
Sample
a33eac573d7e3e71a2b6729769bd117f.msi
Resource
win7-en-20210920
windows7_x64
0 signatures
0 seconds
Behavioral task
behavioral2
Sample
a33eac573d7e3e71a2b6729769bd117f.msi
Resource
win10-en-20210920
windows10_x64
0 signatures
0 seconds
General
- Target a33eac573d7e3e71a2b6729769bd117f.msi
- Size 264KB
- Sample211008-e8th2adbf9
- SHA256 5ae1647516e23de4444c2bc2b04e1357f02c572421ecfefc82f3c2222c3ee5b4
- MD5 a33eac573d7e3e71a2b6729769bd117f
- SHA1 24a6a3dde4541f00cddd5e08cd9c0f7859ffadab
- SHA512 24523aa85a1e8df3455962b9c250508a74084f7460c15916d140fb716425305cf054dea76eabc5efb8b83d2d8b0996eb05d46a69ad321cd5077cf8d773cd8157
- MD5 SHA1 SHA512
Score
8/10
Malware Config
Signatures
- Blocklisted process makes network request 3 IoCs
flow pid Process 3 740 MsiExec.exe 5 740 MsiExec.exe 7 740 MsiExec.exe - Executes dropped EXE 1 IoCs
pid Process 288 kuCgp.exe - Loads dropped DLL 4 IoCs
pid Process 740 MsiExec.exe 740 MsiExec.exe 288 kuCgp.exe 1136 iexplore.exe - Adds Run key to start application 2 TTPs 2 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Software\Microsoft\Windows\CurrentVersion\Run iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Software\Microsoft\Windows\CurrentVersion\Run\Admin-_rY7915H3 = "\"C:\\Users\\Admin\\Saved Games\\Admin JMucV\\kuCgp.exe\"" iexplore.exe - Enumerates connected drives 3 TTPs 48 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
description ioc Process File opened (read-only) \??\P: msiexec.exe File opened (read-only) \??\H: msiexec.exe File opened (read-only) \??\Z: msiexec.exe File opened (read-only) \??\H: msiexec.exe File opened (read-only) \??\S: msiexec.exe File opened (read-only) \??\G: msiexec.exe File opened (read-only) \??\I: msiexec.exe File opened (read-only) \??\X: msiexec.exe File opened (read-only) \??\X: msiexec.exe File opened (read-only) \??\Z: msiexec.exe File opened (read-only) \??\M: msiexec.exe File opened (read-only) \??\W: msiexec.exe File opened (read-only) \??\O: msiexec.exe File opened (read-only) \??\Q: msiexec.exe File opened (read-only) \??\T: msiexec.exe File opened (read-only) \??\E: msiexec.exe File opened (read-only) \??\Y: msiexec.exe File opened (read-only) \??\F: msiexec.exe File opened (read-only) \??\G: msiexec.exe File opened (read-only) \??\J: msiexec.exe File opened (read-only) \??\K: msiexec.exe File opened (read-only) \??\L: msiexec.exe File opened (read-only) \??\M: msiexec.exe File opened (read-only) \??\R: msiexec.exe File opened (read-only) \??\Q: msiexec.exe File opened (read-only) \??\R: msiexec.exe File opened (read-only) \??\Y: msiexec.exe File opened (read-only) \??\A: msiexec.exe File opened (read-only) \??\F: msiexec.exe File opened (read-only) \??\J: msiexec.exe File opened (read-only) \??\K: msiexec.exe File opened (read-only) \??\T: msiexec.exe File opened (read-only) \??\V: msiexec.exe File opened (read-only) \??\N: msiexec.exe File opened (read-only) \??\B: msiexec.exe File opened (read-only) \??\L: msiexec.exe File opened (read-only) \??\N: msiexec.exe File opened (read-only) \??\P: msiexec.exe File opened (read-only) \??\S: msiexec.exe File opened (read-only) \??\A: msiexec.exe File opened (read-only) \??\O: msiexec.exe File opened (read-only) \??\B: msiexec.exe File opened (read-only) \??\E: msiexec.exe File opened (read-only) \??\I: msiexec.exe File opened (read-only) \??\U: msiexec.exe File opened (read-only) \??\V: msiexec.exe File opened (read-only) \??\W: msiexec.exe File opened (read-only) \??\U: msiexec.exe - Drops file in Windows directory 8 IoCs
description ioc Process File created C:\Windows\Installer\f75ca72.ipi msiexec.exe File opened for modification C:\Windows\Installer\ msiexec.exe File opened for modification C:\Windows\Installer\MSI6125.tmp msiexec.exe File opened for modification C:\Windows\Installer\f75ca72.ipi msiexec.exe File created C:\Windows\Installer\f75ca70.msi msiexec.exe File opened for modification C:\Windows\Installer\f75ca70.msi msiexec.exe File opened for modification C:\Windows\Installer\MSICC35.tmp msiexec.exe File opened for modification C:\Windows\Installer\MSICE0A.tmp msiexec.exe - Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
description ioc Process Key opened \REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0 iexplore.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString iexplore.exe - Enumerates system info in registry 2 TTPs 4 IoCs
description ioc Process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemProductName iexplore.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemVersion iexplore.exe Key opened \REGISTRY\MACHINE\Hardware\Description\System\BIOS iexplore.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemManufacturer iexplore.exe - Modifies Control Panel 2 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Control Panel\(Padrão) 2 = "kuCgp" kuCgp.exe Set value (str) \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Control Panel\(Padrão) 3 = "C:\\Users\\Admin\\Saved Games\\Admin JMucV\\" kuCgp.exe - Script User-Agent 1 IoCs
Uses user-agent string associated with script host/environment.
description flow ioc HTTP User-Agent header 3 Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5) - Suspicious behavior: EnumeratesProcesses 57 IoCs
pid Process 2016 msiexec.exe 2016 msiexec.exe 2016 msiexec.exe 1136 iexplore.exe 1136 iexplore.exe 1136 iexplore.exe 1136 iexplore.exe 1136 iexplore.exe 1136 iexplore.exe 1136 iexplore.exe 1136 iexplore.exe 1136 iexplore.exe 1136 iexplore.exe 1136 iexplore.exe 1136 iexplore.exe 1136 iexplore.exe 1136 iexplore.exe 1136 iexplore.exe 1136 iexplore.exe 1136 iexplore.exe 1136 iexplore.exe 1136 iexplore.exe 1136 iexplore.exe 1136 iexplore.exe 1136 iexplore.exe 1136 iexplore.exe 1136 iexplore.exe 1136 iexplore.exe 1136 iexplore.exe 1136 iexplore.exe 1136 iexplore.exe 1136 iexplore.exe 1136 iexplore.exe 1136 iexplore.exe 1136 iexplore.exe 1136 iexplore.exe 1136 iexplore.exe 1136 iexplore.exe 1136 iexplore.exe 1136 iexplore.exe 1136 iexplore.exe 1136 iexplore.exe 1136 iexplore.exe 1136 iexplore.exe 1136 iexplore.exe 1136 iexplore.exe 1136 iexplore.exe 1136 iexplore.exe 1136 iexplore.exe 1136 iexplore.exe 1136 iexplore.exe 1136 iexplore.exe 1136 iexplore.exe 1136 iexplore.exe 1136 iexplore.exe 1136 iexplore.exe 1136 iexplore.exe - Suspicious use of AdjustPrivilegeToken 64 IoCs
description pid Process Token: SeShutdownPrivilege 1144 msiexec.exe Token: SeIncreaseQuotaPrivilege 1144 msiexec.exe Token: SeRestorePrivilege 2016 msiexec.exe Token: SeTakeOwnershipPrivilege 2016 msiexec.exe Token: SeSecurityPrivilege 2016 msiexec.exe Token: SeCreateTokenPrivilege 1144 msiexec.exe Token: SeAssignPrimaryTokenPrivilege 1144 msiexec.exe Token: SeLockMemoryPrivilege 1144 msiexec.exe Token: SeIncreaseQuotaPrivilege 1144 msiexec.exe Token: SeMachineAccountPrivilege 1144 msiexec.exe Token: SeTcbPrivilege 1144 msiexec.exe Token: SeSecurityPrivilege 1144 msiexec.exe Token: SeTakeOwnershipPrivilege 1144 msiexec.exe Token: SeLoadDriverPrivilege 1144 msiexec.exe Token: SeSystemProfilePrivilege 1144 msiexec.exe Token: SeSystemtimePrivilege 1144 msiexec.exe Token: SeProfSingleProcessPrivilege 1144 msiexec.exe Token: SeIncBasePriorityPrivilege 1144 msiexec.exe Token: SeCreatePagefilePrivilege 1144 msiexec.exe Token: SeCreatePermanentPrivilege 1144 msiexec.exe Token: SeBackupPrivilege 1144 msiexec.exe Token: SeRestorePrivilege 1144 msiexec.exe Token: SeShutdownPrivilege 1144 msiexec.exe Token: SeDebugPrivilege 1144 msiexec.exe Token: SeAuditPrivilege 1144 msiexec.exe Token: SeSystemEnvironmentPrivilege 1144 msiexec.exe Token: SeChangeNotifyPrivilege 1144 msiexec.exe Token: SeRemoteShutdownPrivilege 1144 msiexec.exe Token: SeUndockPrivilege 1144 msiexec.exe Token: SeSyncAgentPrivilege 1144 msiexec.exe Token: SeEnableDelegationPrivilege 1144 msiexec.exe Token: SeManageVolumePrivilege 1144 msiexec.exe Token: SeImpersonatePrivilege 1144 msiexec.exe Token: SeCreateGlobalPrivilege 1144 msiexec.exe Token: SeRestorePrivilege 2016 msiexec.exe Token: SeTakeOwnershipPrivilege 2016 msiexec.exe Token: SeRestorePrivilege 2016 msiexec.exe Token: SeTakeOwnershipPrivilege 2016 msiexec.exe Token: SeRestorePrivilege 2016 msiexec.exe Token: SeTakeOwnershipPrivilege 2016 msiexec.exe Token: SeRestorePrivilege 2016 msiexec.exe Token: SeTakeOwnershipPrivilege 2016 msiexec.exe Token: SeIncreaseQuotaPrivilege 1896 WMIC.exe Token: SeSecurityPrivilege 1896 WMIC.exe Token: SeTakeOwnershipPrivilege 1896 WMIC.exe Token: SeLoadDriverPrivilege 1896 WMIC.exe Token: SeSystemProfilePrivilege 1896 WMIC.exe Token: SeSystemtimePrivilege 1896 WMIC.exe Token: SeProfSingleProcessPrivilege 1896 WMIC.exe Token: SeIncBasePriorityPrivilege 1896 WMIC.exe Token: SeCreatePagefilePrivilege 1896 WMIC.exe Token: SeBackupPrivilege 1896 WMIC.exe Token: SeRestorePrivilege 1896 WMIC.exe Token: SeShutdownPrivilege 1896 WMIC.exe Token: SeDebugPrivilege 1896 WMIC.exe Token: SeSystemEnvironmentPrivilege 1896 WMIC.exe Token: SeRemoteShutdownPrivilege 1896 WMIC.exe Token: SeUndockPrivilege 1896 WMIC.exe Token: SeManageVolumePrivilege 1896 WMIC.exe Token: 33 1896 WMIC.exe Token: 34 1896 WMIC.exe Token: 35 1896 WMIC.exe Token: SeRestorePrivilege 2016 msiexec.exe Token: SeTakeOwnershipPrivilege 2016 msiexec.exe - Suspicious use of FindShellTrayWindow 3 IoCs
pid Process 1144 msiexec.exe 740 MsiExec.exe 1144 msiexec.exe - Suspicious use of WriteProcessMemory 16 IoCs
description pid Process procid_target PID 2016 wrote to memory of 740 2016 msiexec.exe 28 PID 2016 wrote to memory of 740 2016 msiexec.exe 28 PID 2016 wrote to memory of 740 2016 msiexec.exe 28 PID 2016 wrote to memory of 740 2016 msiexec.exe 28 PID 2016 wrote to memory of 740 2016 msiexec.exe 28 PID 2016 wrote to memory of 740 2016 msiexec.exe 28 PID 2016 wrote to memory of 740 2016 msiexec.exe 28 PID 740 wrote to memory of 1896 740 MsiExec.exe 29 PID 740 wrote to memory of 1896 740 MsiExec.exe 29 PID 740 wrote to memory of 1896 740 MsiExec.exe 29 PID 740 wrote to memory of 1896 740 MsiExec.exe 29 PID 288 wrote to memory of 1136 288 kuCgp.exe 33 PID 288 wrote to memory of 1136 288 kuCgp.exe 33 PID 288 wrote to memory of 1136 288 kuCgp.exe 33 PID 288 wrote to memory of 1136 288 kuCgp.exe 33 PID 288 wrote to memory of 1136 288 kuCgp.exe 33
Processes
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C:\Windows\system32\msiexec.exemsiexec.exe /I C:\Users\Admin\AppData\Local\Temp\a33eac573d7e3e71a2b6729769bd117f.msi1⤵
- Enumerates connected drives
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
PID:1144
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C:\Windows\system32\msiexec.exeC:\Windows\system32\msiexec.exe /V1⤵
- Enumerates connected drives
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2016 -
C:\Windows\syswow64\MsiExec.exeC:\Windows\syswow64\MsiExec.exe -Embedding B6B117E9B61D86F1A4DC8132FCD6B24D2⤵
- Blocklisted process makes network request
- Loads dropped DLL
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:740 -
C:\Windows\SysWOW64\Wbem\WMIC.exe"C:\Windows\System32\Wbem\WMIC.exe" process call create 'C:\Users\Admin\Saved Games\Admin JMucV\kuCgp.exe'3⤵
- Suspicious use of AdjustPrivilegeToken
PID:1896
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C:\Users\Admin\Saved Games\Admin JMucV\kuCgp.exe"C:\Users\Admin\Saved Games\Admin JMucV\kuCgp.exe"1⤵
- Executes dropped EXE
- Loads dropped DLL
- Modifies Control Panel
- Suspicious use of WriteProcessMemory
PID:288 -
C:\Program Files (x86)\Internet explorer\iexplore.exe"C:\Program Files (x86)\Internet explorer\iexplore.exe"2⤵
- Loads dropped DLL
- Adds Run key to start application
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: EnumeratesProcesses
PID:1136
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