Analysis
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max time kernel
149s -
max time network
98s -
platform
windows10-2004_x64 -
resource
win10v2004-20240419-en -
resource tags
arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system -
submitted
04/05/2024, 11:03
Static task
static1
1 signatures
Behavioral task
behavioral1
Sample
95815ca8bd1a4c2ecee64112f7d74c19.exe
Resource
win7-20240221-en
windows7-x64
11 signatures
150 seconds
Behavioral task
behavioral2
Sample
95815ca8bd1a4c2ecee64112f7d74c19.exe
Resource
win10v2004-20240419-en
windows10-2004-x64
10 signatures
150 seconds
General
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Target
95815ca8bd1a4c2ecee64112f7d74c19.exe
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Size
70KB
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MD5
95815ca8bd1a4c2ecee64112f7d74c19
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SHA1
36215d706db2fcb974b7c23a439519ab83ec6eea
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SHA256
6c21a6568ca43fc021b18095f09574b870723027c5f9195ef1ad07a077fb5c58
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SHA512
660dd5d9aeed6a30a7867765c94dd523b4c443694d521bfe7a0f4658bee02bd5b06addc8dc90931c57003c68675626a75c9ea507378d81deac691342f81f17cd
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SSDEEP
1536:1teqKDlXvCDB04f5Gn/L8FlADNt3d1Hw8Dn:Olg35GTslA5t3/w8L
Score
10/10
Malware Config
Signatures
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description ioc Process Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesDisableNotify = "25600" oublasook.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusOverride = "25600" oublasook.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "25600" oublasook.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\FirewallDisableNotify = "25600" oublasook.exe -
Modifies Installed Components in the registry 2 TTPs 4 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{484E4F50-4d4c-5059-484E-4F504D4C5059} oublasook.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{484E4F50-4d4c-5059-484E-4F504D4C5059}\01234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123 = "a" oublasook.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{484E4F50-4d4c-5059-484E-4F504D4C5059}\IsInstalled = "1" oublasook.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{484E4F50-4d4c-5059-484E-4F504D4C5059}\StubPath = "C:\\Windows\\system32\\kmudar.exe" oublasook.exe -
Sets file execution options in registry 2 TTPs 3 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\explorer.exe oublasook.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\explorer.exe\0123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890 = "a" oublasook.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\explorer.exe\Debugger = "C:\\Windows\\system32\\eamvutax.exe" oublasook.exe -
Executes dropped EXE 2 IoCs
pid Process 728 oublasook.exe 4612 oublasook.exe -
description ioc Process Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusOverride = "25600" oublasook.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "25600" oublasook.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\FirewallDisableNotify = "25600" oublasook.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesDisableNotify = "25600" oublasook.exe -
Modifies WinLogon 2 TTPs 5 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\{BC84DF00-BC38-9902-8082-6FCBF2D87A0B} oublasook.exe Key created \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify oublasook.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\{BC84DF00-BC38-9902-8082-6FCBF2D87A0B}\012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345 = "a" oublasook.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\{BC84DF00-BC38-9902-8082-6FCBF2D87A0B}\DLLName = "C:\\Windows\\system32\\ufgetip-udooc.dll" oublasook.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\{BC84DF00-BC38-9902-8082-6FCBF2D87A0B}\Startup = "Startup" oublasook.exe -
Drops file in System32 directory 9 IoCs
description ioc Process File created C:\Windows\SysWOW64\oublasook.exe 95815ca8bd1a4c2ecee64112f7d74c19.exe File opened for modification C:\Windows\SysWOW64\ufgetip-udooc.dll oublasook.exe File created C:\Windows\SysWOW64\ufgetip-udooc.dll oublasook.exe File opened for modification C:\Windows\SysWOW64\oublasook.exe oublasook.exe File created C:\Windows\SysWOW64\kmudar.exe oublasook.exe File opened for modification C:\Windows\SysWOW64\oublasook.exe 95815ca8bd1a4c2ecee64112f7d74c19.exe File opened for modification C:\Windows\SysWOW64\eamvutax.exe oublasook.exe File created C:\Windows\SysWOW64\eamvutax.exe oublasook.exe File opened for modification C:\Windows\SysWOW64\kmudar.exe oublasook.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 728 oublasook.exe 728 oublasook.exe 728 oublasook.exe 728 oublasook.exe 4612 oublasook.exe 4612 oublasook.exe 728 oublasook.exe 728 oublasook.exe 728 oublasook.exe 728 oublasook.exe 728 oublasook.exe 728 oublasook.exe 728 oublasook.exe 728 oublasook.exe 728 oublasook.exe 728 oublasook.exe 728 oublasook.exe 728 oublasook.exe 728 oublasook.exe 728 oublasook.exe 728 oublasook.exe 728 oublasook.exe 728 oublasook.exe 728 oublasook.exe 728 oublasook.exe 728 oublasook.exe 728 oublasook.exe 728 oublasook.exe 728 oublasook.exe 728 oublasook.exe 728 oublasook.exe 728 oublasook.exe 728 oublasook.exe 728 oublasook.exe 728 oublasook.exe 728 oublasook.exe 728 oublasook.exe 728 oublasook.exe 728 oublasook.exe 728 oublasook.exe 728 oublasook.exe 728 oublasook.exe 728 oublasook.exe 728 oublasook.exe 728 oublasook.exe 728 oublasook.exe 728 oublasook.exe 728 oublasook.exe 728 oublasook.exe 728 oublasook.exe 728 oublasook.exe 728 oublasook.exe 728 oublasook.exe 728 oublasook.exe 728 oublasook.exe 728 oublasook.exe 728 oublasook.exe 728 oublasook.exe 728 oublasook.exe 728 oublasook.exe 728 oublasook.exe 728 oublasook.exe 728 oublasook.exe 728 oublasook.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 4560 95815ca8bd1a4c2ecee64112f7d74c19.exe Token: SeDebugPrivilege 728 oublasook.exe -
Suspicious use of WriteProcessMemory 64 IoCs
description pid Process procid_target PID 4560 wrote to memory of 728 4560 95815ca8bd1a4c2ecee64112f7d74c19.exe 84 PID 4560 wrote to memory of 728 4560 95815ca8bd1a4c2ecee64112f7d74c19.exe 84 PID 4560 wrote to memory of 728 4560 95815ca8bd1a4c2ecee64112f7d74c19.exe 84 PID 728 wrote to memory of 620 728 oublasook.exe 5 PID 728 wrote to memory of 4612 728 oublasook.exe 85 PID 728 wrote to memory of 4612 728 oublasook.exe 85 PID 728 wrote to memory of 4612 728 oublasook.exe 85 PID 728 wrote to memory of 3480 728 oublasook.exe 55 PID 728 wrote to memory of 3480 728 oublasook.exe 55 PID 728 wrote to memory of 3480 728 oublasook.exe 55 PID 728 wrote to memory of 3480 728 oublasook.exe 55 PID 728 wrote to memory of 3480 728 oublasook.exe 55 PID 728 wrote to memory of 3480 728 oublasook.exe 55 PID 728 wrote to memory of 3480 728 oublasook.exe 55 PID 728 wrote to memory of 3480 728 oublasook.exe 55 PID 728 wrote to memory of 3480 728 oublasook.exe 55 PID 728 wrote to memory of 3480 728 oublasook.exe 55 PID 728 wrote to memory of 3480 728 oublasook.exe 55 PID 728 wrote to memory of 3480 728 oublasook.exe 55 PID 728 wrote to memory of 3480 728 oublasook.exe 55 PID 728 wrote to memory of 3480 728 oublasook.exe 55 PID 728 wrote to memory of 3480 728 oublasook.exe 55 PID 728 wrote to memory of 3480 728 oublasook.exe 55 PID 728 wrote to memory of 3480 728 oublasook.exe 55 PID 728 wrote to memory of 3480 728 oublasook.exe 55 PID 728 wrote to memory of 3480 728 oublasook.exe 55 PID 728 wrote to memory of 3480 728 oublasook.exe 55 PID 728 wrote to memory of 3480 728 oublasook.exe 55 PID 728 wrote to memory of 3480 728 oublasook.exe 55 PID 728 wrote to memory of 3480 728 oublasook.exe 55 PID 728 wrote to memory of 3480 728 oublasook.exe 55 PID 728 wrote to memory of 3480 728 oublasook.exe 55 PID 728 wrote to memory of 3480 728 oublasook.exe 55 PID 728 wrote to memory of 3480 728 oublasook.exe 55 PID 728 wrote to memory of 3480 728 oublasook.exe 55 PID 728 wrote to memory of 3480 728 oublasook.exe 55 PID 728 wrote to memory of 3480 728 oublasook.exe 55 PID 728 wrote to memory of 3480 728 oublasook.exe 55 PID 728 wrote to memory of 3480 728 oublasook.exe 55 PID 728 wrote to memory of 3480 728 oublasook.exe 55 PID 728 wrote to memory of 3480 728 oublasook.exe 55 PID 728 wrote to memory of 3480 728 oublasook.exe 55 PID 728 wrote to memory of 3480 728 oublasook.exe 55 PID 728 wrote to memory of 3480 728 oublasook.exe 55 PID 728 wrote to memory of 3480 728 oublasook.exe 55 PID 728 wrote to memory of 3480 728 oublasook.exe 55 PID 728 wrote to memory of 3480 728 oublasook.exe 55 PID 728 wrote to memory of 3480 728 oublasook.exe 55 PID 728 wrote to memory of 3480 728 oublasook.exe 55 PID 728 wrote to memory of 3480 728 oublasook.exe 55 PID 728 wrote to memory of 3480 728 oublasook.exe 55 PID 728 wrote to memory of 3480 728 oublasook.exe 55 PID 728 wrote to memory of 3480 728 oublasook.exe 55 PID 728 wrote to memory of 3480 728 oublasook.exe 55 PID 728 wrote to memory of 3480 728 oublasook.exe 55 PID 728 wrote to memory of 3480 728 oublasook.exe 55 PID 728 wrote to memory of 3480 728 oublasook.exe 55 PID 728 wrote to memory of 3480 728 oublasook.exe 55 PID 728 wrote to memory of 3480 728 oublasook.exe 55 PID 728 wrote to memory of 3480 728 oublasook.exe 55 PID 728 wrote to memory of 3480 728 oublasook.exe 55 PID 728 wrote to memory of 3480 728 oublasook.exe 55 PID 728 wrote to memory of 3480 728 oublasook.exe 55 PID 728 wrote to memory of 3480 728 oublasook.exe 55
Processes
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C:\Windows\system32\winlogon.exewinlogon.exe1⤵PID:620
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C:\Windows\Explorer.EXEC:\Windows\Explorer.EXE1⤵PID:3480
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C:\Users\Admin\AppData\Local\Temp\95815ca8bd1a4c2ecee64112f7d74c19.exe"C:\Users\Admin\AppData\Local\Temp\95815ca8bd1a4c2ecee64112f7d74c19.exe"2⤵
- Drops file in System32 directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4560 -
C:\Windows\SysWOW64\oublasook.exe"C:\Windows\system32\oublasook.exe"3⤵
- Windows security bypass
- Modifies Installed Components in the registry
- Sets file execution options in registry
- Executes dropped EXE
- Windows security modification
- Modifies WinLogon
- Drops file in System32 directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:728 -
C:\Windows\SysWOW64\oublasook.exe--k33p4⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
PID:4612
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
73KB
MD52effedc2e4b27b7210c3e3d86addcd33
SHA13a34e978730eaff7b7a9b47802126c08e1ccc97f
SHA25685778d9b3a59dc85c4daa02353c48645ae3c8073ff8251f8809644aefb7a26d8
SHA5127092d922c8d70fbe92d555b213c4e1f62ee2650db395a3a9b35cc19680e4a7fcfc417f83d633ba4f5af974f56ec3e2b5f96d41823ba8e4e2b221fa23ffa01aec
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Filesize
72KB
MD5fcca4c6294e1611ebac4ceb02de534ab
SHA183453cb39458ef1a6048923c8025745815ba8eae
SHA25601fb30166f405bbdba6c10796a8507e98320fbfd8e93b93d9a7ee639ed1fa28d
SHA5124e10c423918294d27afcc43292bbc9c2498c43cd2326eeae677e7ec999dd2490e506f14531c54f9e59f41acdabf9d244d9f2d5b1e947d93770eb6c86b0119b14
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Filesize
70KB
MD595815ca8bd1a4c2ecee64112f7d74c19
SHA136215d706db2fcb974b7c23a439519ab83ec6eea
SHA2566c21a6568ca43fc021b18095f09574b870723027c5f9195ef1ad07a077fb5c58
SHA512660dd5d9aeed6a30a7867765c94dd523b4c443694d521bfe7a0f4658bee02bd5b06addc8dc90931c57003c68675626a75c9ea507378d81deac691342f81f17cd
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Filesize
5KB
MD5f37b21c00fd81bd93c89ce741a88f183
SHA1b2796500597c68e2f5638e1101b46eaf32676c1c
SHA25676cf016fd77cb5a06c6ed4674ddc2345e8390c010cf344491a6e742baf2c0fb0
SHA512252fe66dea9a4b9aebc5fd2f24434719cb25159ba51549d9de407f44b6a2f7bce6e071be02c4f2ad6aef588c77f12c00ed415eb54f96dec1b077326e101ce0f4