Analysis
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max time kernel
155s -
max time network
191s -
platform
windows10-2004_x64 -
resource
win10v2004-20221111-en -
resource tags
arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system -
submitted
28-11-2022 03:40
Static task
static1
Behavioral task
behavioral1
Sample
af987e9949de476f955b540bd09d88fa36ad66a29a531a554761a9256cdebd17.exe
Resource
win7-20221111-en
Behavioral task
behavioral2
Sample
af987e9949de476f955b540bd09d88fa36ad66a29a531a554761a9256cdebd17.exe
Resource
win10v2004-20221111-en
General
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Target
af987e9949de476f955b540bd09d88fa36ad66a29a531a554761a9256cdebd17.exe
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Size
233KB
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MD5
55841d5818935938e350943471785894
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SHA1
d2a97467a0a92ba167cc1c3020d0172a6623a3d2
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SHA256
af987e9949de476f955b540bd09d88fa36ad66a29a531a554761a9256cdebd17
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SHA512
ec0ce562c56abede5219d0f05cc0ac9428662e93ed555ce5dc262345c81f4045e7a486a89c3daf379aa864794bc4ac2ea40c06aef524d6143c4259e2e349589b
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SSDEEP
6144:88dNXSEprMkKP1yhkGX/PXdTFxNCmng5K+nSP6:npAwrX//tfZ6
Malware Config
Signatures
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Deletes shadow copies 2 TTPs
Ransomware often targets backup files to inhibit system recovery.
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Loads dropped DLL 4 IoCs
Processes:
af987e9949de476f955b540bd09d88fa36ad66a29a531a554761a9256cdebd17.exepid process 2388 af987e9949de476f955b540bd09d88fa36ad66a29a531a554761a9256cdebd17.exe 2388 af987e9949de476f955b540bd09d88fa36ad66a29a531a554761a9256cdebd17.exe 2388 af987e9949de476f955b540bd09d88fa36ad66a29a531a554761a9256cdebd17.exe 2388 af987e9949de476f955b540bd09d88fa36ad66a29a531a554761a9256cdebd17.exe -
Adds Run key to start application 2 TTPs 2 IoCs
Processes:
explorer.exedescription ioc process Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run explorer.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\uqzfunuf = "\"C:\\Windows\\ugghyvyq.exe\"" explorer.exe -
Suspicious use of SetThreadContext 2 IoCs
Processes:
af987e9949de476f955b540bd09d88fa36ad66a29a531a554761a9256cdebd17.exeaf987e9949de476f955b540bd09d88fa36ad66a29a531a554761a9256cdebd17.exedescription pid process target process PID 2388 set thread context of 3688 2388 af987e9949de476f955b540bd09d88fa36ad66a29a531a554761a9256cdebd17.exe af987e9949de476f955b540bd09d88fa36ad66a29a531a554761a9256cdebd17.exe PID 3688 set thread context of 3596 3688 af987e9949de476f955b540bd09d88fa36ad66a29a531a554761a9256cdebd17.exe explorer.exe -
Drops file in Windows directory 2 IoCs
Processes:
explorer.exedescription ioc process File opened for modification C:\Windows\ugghyvyq.exe explorer.exe File created C:\Windows\ugghyvyq.exe explorer.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Interacts with shadow copies 2 TTPs 1 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
Processes:
vssadmin.exepid process 3036 vssadmin.exe -
Modifies Internet Explorer Phishing Filter 1 TTPs 3 IoCs
Processes:
explorer.exedescription ioc process Key created \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\Software\Microsoft\Internet Explorer\PhishingFilter explorer.exe Set value (int) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Internet Explorer\PhishingFilter\EnabledV8 = "0" explorer.exe Set value (int) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Internet Explorer\PhishingFilter\EnabledV9 = "0" explorer.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
Processes:
vssvc.exedescription pid process Token: SeBackupPrivilege 4188 vssvc.exe Token: SeRestorePrivilege 4188 vssvc.exe Token: SeAuditPrivilege 4188 vssvc.exe -
Suspicious use of WriteProcessMemory 16 IoCs
Processes:
af987e9949de476f955b540bd09d88fa36ad66a29a531a554761a9256cdebd17.exeaf987e9949de476f955b540bd09d88fa36ad66a29a531a554761a9256cdebd17.exeexplorer.exedescription pid process target process PID 2388 wrote to memory of 3688 2388 af987e9949de476f955b540bd09d88fa36ad66a29a531a554761a9256cdebd17.exe af987e9949de476f955b540bd09d88fa36ad66a29a531a554761a9256cdebd17.exe PID 2388 wrote to memory of 3688 2388 af987e9949de476f955b540bd09d88fa36ad66a29a531a554761a9256cdebd17.exe af987e9949de476f955b540bd09d88fa36ad66a29a531a554761a9256cdebd17.exe PID 2388 wrote to memory of 3688 2388 af987e9949de476f955b540bd09d88fa36ad66a29a531a554761a9256cdebd17.exe af987e9949de476f955b540bd09d88fa36ad66a29a531a554761a9256cdebd17.exe PID 2388 wrote to memory of 3688 2388 af987e9949de476f955b540bd09d88fa36ad66a29a531a554761a9256cdebd17.exe af987e9949de476f955b540bd09d88fa36ad66a29a531a554761a9256cdebd17.exe PID 2388 wrote to memory of 3688 2388 af987e9949de476f955b540bd09d88fa36ad66a29a531a554761a9256cdebd17.exe af987e9949de476f955b540bd09d88fa36ad66a29a531a554761a9256cdebd17.exe PID 2388 wrote to memory of 3688 2388 af987e9949de476f955b540bd09d88fa36ad66a29a531a554761a9256cdebd17.exe af987e9949de476f955b540bd09d88fa36ad66a29a531a554761a9256cdebd17.exe PID 2388 wrote to memory of 3688 2388 af987e9949de476f955b540bd09d88fa36ad66a29a531a554761a9256cdebd17.exe af987e9949de476f955b540bd09d88fa36ad66a29a531a554761a9256cdebd17.exe PID 2388 wrote to memory of 3688 2388 af987e9949de476f955b540bd09d88fa36ad66a29a531a554761a9256cdebd17.exe af987e9949de476f955b540bd09d88fa36ad66a29a531a554761a9256cdebd17.exe PID 2388 wrote to memory of 3688 2388 af987e9949de476f955b540bd09d88fa36ad66a29a531a554761a9256cdebd17.exe af987e9949de476f955b540bd09d88fa36ad66a29a531a554761a9256cdebd17.exe PID 2388 wrote to memory of 3688 2388 af987e9949de476f955b540bd09d88fa36ad66a29a531a554761a9256cdebd17.exe af987e9949de476f955b540bd09d88fa36ad66a29a531a554761a9256cdebd17.exe PID 3688 wrote to memory of 3596 3688 af987e9949de476f955b540bd09d88fa36ad66a29a531a554761a9256cdebd17.exe explorer.exe PID 3688 wrote to memory of 3596 3688 af987e9949de476f955b540bd09d88fa36ad66a29a531a554761a9256cdebd17.exe explorer.exe PID 3688 wrote to memory of 3596 3688 af987e9949de476f955b540bd09d88fa36ad66a29a531a554761a9256cdebd17.exe explorer.exe PID 3688 wrote to memory of 3596 3688 af987e9949de476f955b540bd09d88fa36ad66a29a531a554761a9256cdebd17.exe explorer.exe PID 3596 wrote to memory of 3036 3596 explorer.exe vssadmin.exe PID 3596 wrote to memory of 3036 3596 explorer.exe vssadmin.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\af987e9949de476f955b540bd09d88fa36ad66a29a531a554761a9256cdebd17.exe"C:\Users\Admin\AppData\Local\Temp\af987e9949de476f955b540bd09d88fa36ad66a29a531a554761a9256cdebd17.exe"1⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\af987e9949de476f955b540bd09d88fa36ad66a29a531a554761a9256cdebd17.exe"C:\Users\Admin\AppData\Local\Temp\af987e9949de476f955b540bd09d88fa36ad66a29a531a554761a9256cdebd17.exe"2⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\explorer.exe"C:\Windows\system32\explorer.exe"3⤵
- Adds Run key to start application
- Drops file in Windows directory
- Modifies Internet Explorer Phishing Filter
- Suspicious use of WriteProcessMemory
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C:\Windows\SYSTEM32\vssadmin.exevssadmin.exe Delete Shadows /All /Quiet4⤵
- Interacts with shadow copies
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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C:\ProgramData\adyxihodaryrujum\01000000Filesize
233KB
MD5aa44ce726bc03e75c23f56ed642e5f16
SHA13c5659e0b08424b3ef079627886e5cda69b74bce
SHA256068d33dcbe93df8b1933ded11432af3b443c2a50d3c9985f18d8a642845c2b02
SHA5124df6a246824ae0f4ff0b703cf1adf043ba83d908b813b565ae6611d64ffb8a0f008e9a272cb011b0dc84350797cd04b1305335373312ffb7dfc1a84797ec215a
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C:\Users\Admin\AppData\Local\Temp\nsi416F.tmp\UserInfo.dllFilesize
4KB
MD5d9a3fc12d56726dde60c1ead1df366f7
SHA1f531768159c14f07ac896437445652b33750a237
SHA256401f1a02000ff7cf9853d964dcba77e6f0fa8e57256b11ed3c01171d7a97388a
SHA5126b06e3446df419151dd20cdb1d9c595fe9fb0972e7dfc50dadeea9f868d8ef0cd4cefcb18c7ebfc0d2a3e9171f8aa1f9fe762f54c374667f6060e8ce7e845f51
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C:\Users\Admin\AppData\Local\Temp\nsi416F.tmp\UserInfo.dllFilesize
4KB
MD5d9a3fc12d56726dde60c1ead1df366f7
SHA1f531768159c14f07ac896437445652b33750a237
SHA256401f1a02000ff7cf9853d964dcba77e6f0fa8e57256b11ed3c01171d7a97388a
SHA5126b06e3446df419151dd20cdb1d9c595fe9fb0972e7dfc50dadeea9f868d8ef0cd4cefcb18c7ebfc0d2a3e9171f8aa1f9fe762f54c374667f6060e8ce7e845f51
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C:\Users\Admin\AppData\Local\Temp\nsi416F.tmp\UserInfo.dllFilesize
4KB
MD5d9a3fc12d56726dde60c1ead1df366f7
SHA1f531768159c14f07ac896437445652b33750a237
SHA256401f1a02000ff7cf9853d964dcba77e6f0fa8e57256b11ed3c01171d7a97388a
SHA5126b06e3446df419151dd20cdb1d9c595fe9fb0972e7dfc50dadeea9f868d8ef0cd4cefcb18c7ebfc0d2a3e9171f8aa1f9fe762f54c374667f6060e8ce7e845f51
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C:\Users\Admin\AppData\Local\Temp\nsi416F.tmp\oxygenate.dllFilesize
56KB
MD52ef8cf8605d3d42da5e70b7b9478ac1f
SHA1ff26c75863cb2f21319be719b4ff94a3b1cadecd
SHA2568fe88a60dd903069cdfff27813ff1c0d6f01246191aca805af4e11a117067a5f
SHA512f4b2785d4c020c36e41adc7ab34a72b18012faccdd69c4a24fd963740fcd870f79b7273166d2275caebf90c9cf4d6bcb1a099605bcaeab12cbc42e9db3463658
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memory/3036-147-0x0000000000000000-mapping.dmp
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memory/3596-142-0x0000000000A00000-0x0000000000A38000-memory.dmpFilesize
224KB
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memory/3596-141-0x0000000000000000-mapping.dmp
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memory/3596-146-0x0000000000A00000-0x0000000000A38000-memory.dmpFilesize
224KB
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memory/3596-148-0x0000000000A00000-0x0000000000A38000-memory.dmpFilesize
224KB
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memory/3688-140-0x0000000000400000-0x0000000000439000-memory.dmpFilesize
228KB
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memory/3688-139-0x0000000000400000-0x0000000000439000-memory.dmpFilesize
228KB
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memory/3688-145-0x0000000000400000-0x0000000000439000-memory.dmpFilesize
228KB
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memory/3688-137-0x0000000000400000-0x0000000000439000-memory.dmpFilesize
228KB
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memory/3688-136-0x0000000000000000-mapping.dmp