98dae5d33c5c679a7a43cfad922a0cb8986ed4551499cd810b74a35756068a83

Analysis

max time kernel
132s
max time network
163s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
01/12/2022, 20:41

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General

Target

98dae5d33c5c679a7a43cfad922a0cb8986ed4551499cd810b74a35756068a83.exe
Size

198KB
MD5

dbf6d37c76471c54d72c32d6aa5e53bc
SHA1

29f86010b5329da4bd91fdeb6bf6180425067030
SHA256

98dae5d33c5c679a7a43cfad922a0cb8986ed4551499cd810b74a35756068a83
SHA512

c5af371f7be116613cf1f29a699e1aaa1b42cee9c6daf7206dd0612505fbac00e3228a493dc210e583dc8e672d2b054b6fb83c0770de24c2a0a8ae786917cea9
SSDEEP

6144:wABMlUdmTKWTE6xkKZ4CDtvhbdApS9TUIItnJIWS6:wDMWTE+HbmpS9ARnJIj6

Score

10^/10

evasion persistence

Malware Config

Signatures

Modifies system executable filetype association 2 TTPs 17 IoCs

persistence

Modify Registry

T1112

Change Default File Association

T1042

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\exefile\DefaultIcon\ = "%1"	okx.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\exefile\shell\start	okx.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\exefile\ = "Application"	okx.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\exefile\shell\open\command	okx.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\exefile\shell\runas	okx.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\exefile\shell\runas\command\IsolatedCommand = "\"%1\" %*"	okx.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\exefile\shell\start\command\ = "\"%1\" %*"	okx.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\exefile\shell\start\command\IsolatedCommand = "\"%1\" %*"	okx.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\exefile\DefaultIcon	okx.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\exefile\shell\open\command\ = "\"C:\\Users\\Admin\\AppData\\Local\\okx.exe\" -a \"%1\" %*"	okx.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\exefile\shell\open\command\IsolatedCommand = "\"%1\" %*"	okx.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\exefile\shell\start\command	okx.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\exefile\Content Type = "application/x-msdownload"	okx.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\exefile\shell\open	okx.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\exefile\shell\runas\command	okx.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\exefile\shell\runas\command\ = "\"%1\" %*"	okx.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\exefile\shell	okx.exe

Disables taskbar notifications via registry modification
evasion

Executes dropped EXE 1 IoCs

pid	Process
936	okx.exe

Modifies Installed Components in the registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Active Setup\Installed Components	explorer.exe

Deletes itself 1 IoCs

pid	Process
936	okx.exe

Loads dropped DLL 2 IoCs

pid	Process
856	98dae5d33c5c679a7a43cfad922a0cb8986ed4551499cd810b74a35756068a83.exe
856	98dae5d33c5c679a7a43cfad922a0cb8986ed4551499cd810b74a35756068a83.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\ctfmon.exe = "C:\\WINDOWS\\system32\\ctfmon.exe"	okx.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run	okx.exe

Modifies registry class 41 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\.exe\shell\runas\command	okx.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\.exe\shell\start\command\ = "\"%1\" %*"	okx.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\exefile\DefaultIcon	okx.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\exefile\shell\runas\command\IsolatedCommand = "\"%1\" %*"	okx.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\exefile\shell\start	okx.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\.exe\shell\open	okx.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\.exe\shell\start\command	okx.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\exefile\DefaultIcon\ = "%1"	okx.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\exefile\shell\open\command\ = "\"C:\\Users\\Admin\\AppData\\Local\\okx.exe\" -a \"%1\" %*"	okx.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = ffffffff	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\.exe\shell\open\command	okx.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\.exe\shell\open\command\ = "\"C:\\Users\\Admin\\AppData\\Local\\okx.exe\" -a \"%1\" %*"	okx.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\.exe\shell\runas\command\ = "\"%1\" %*"	okx.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\exefile	okx.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\exefile\shell\open	okx.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\.exe\shell\start	okx.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\exefile\ = "Application"	okx.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\exefile\Content Type = "application/x-msdownload"	okx.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\exefile\shell\open\command\IsolatedCommand = "\"%1\" %*"	okx.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\exefile\shell\runas\command\ = "\"%1\" %*"	okx.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\exefile\shell\start\command	okx.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_Classes\Local Settings	explorer.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\.exe\Content Type = "application/x-msdownload"	okx.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\.exe\shell\runas	okx.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\exefile\shell\runas	okx.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\exefile\shell\start\command\ = "\"%1\" %*"	okx.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\.exe\shell	okx.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\.exe\shell\start\command\IsolatedCommand = "\"%1\" %*"	okx.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\exefile\shell	okx.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\.exe\DefaultIcon\ = "%1"	okx.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\.exe\shell\runas\command\IsolatedCommand = "\"%1\" %*"	okx.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\exefile\shell\runas\command	okx.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\.exe\ = "exefile"	okx.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\.exe\DefaultIcon	okx.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\.exe\shell\open\command\IsolatedCommand = "\"%1\" %*"	okx.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\exefile\shell\open\command	okx.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\exefile\shell\start\command\IsolatedCommand = "\"%1\" %*"	okx.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\.exe	okx.exe

Suspicious behavior: EnumeratesProcesses 14 IoCs

pid	Process
856	98dae5d33c5c679a7a43cfad922a0cb8986ed4551499cd810b74a35756068a83.exe
856	98dae5d33c5c679a7a43cfad922a0cb8986ed4551499cd810b74a35756068a83.exe
856	98dae5d33c5c679a7a43cfad922a0cb8986ed4551499cd810b74a35756068a83.exe
856	98dae5d33c5c679a7a43cfad922a0cb8986ed4551499cd810b74a35756068a83.exe
856	98dae5d33c5c679a7a43cfad922a0cb8986ed4551499cd810b74a35756068a83.exe
856	98dae5d33c5c679a7a43cfad922a0cb8986ed4551499cd810b74a35756068a83.exe
856	98dae5d33c5c679a7a43cfad922a0cb8986ed4551499cd810b74a35756068a83.exe
856	98dae5d33c5c679a7a43cfad922a0cb8986ed4551499cd810b74a35756068a83.exe
856	98dae5d33c5c679a7a43cfad922a0cb8986ed4551499cd810b74a35756068a83.exe
936	okx.exe
936	okx.exe
936	okx.exe
936	okx.exe
936	okx.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1744	explorer.exe

Suspicious use of AdjustPrivilegeToken 18 IoCs

description	pid	Process
Token: SeShutdownPrivilege	1744	explorer.exe
Token: SeShutdownPrivilege	1744	explorer.exe
Token: SeShutdownPrivilege	1744	explorer.exe
Token: SeShutdownPrivilege	1744	explorer.exe
Token: SeShutdownPrivilege	1744	explorer.exe
Token: SeShutdownPrivilege	1744	explorer.exe
Token: SeShutdownPrivilege	1744	explorer.exe
Token: SeShutdownPrivilege	1744	explorer.exe
Token: SeShutdownPrivilege	1744	explorer.exe
Token: SeShutdownPrivilege	1744	explorer.exe
Token: 33	756	AUDIODG.EXE
Token: SeIncBasePriorityPrivilege	756	AUDIODG.EXE
Token: 33	756	AUDIODG.EXE
Token: SeIncBasePriorityPrivilege	756	AUDIODG.EXE
Token: SeShutdownPrivilege	1744	explorer.exe
Token: SeShutdownPrivilege	1744	explorer.exe
Token: SeShutdownPrivilege	1744	explorer.exe
Token: SeShutdownPrivilege	1744	explorer.exe

Suspicious use of FindShellTrayWindow 31 IoCs

pid	Process
1744	explorer.exe
1744	explorer.exe
1744	explorer.exe
1744	explorer.exe
1744	explorer.exe
1744	explorer.exe
1744	explorer.exe
1744	explorer.exe
1744	explorer.exe
1744	explorer.exe
1744	explorer.exe
1744	explorer.exe
1744	explorer.exe
1744	explorer.exe
1744	explorer.exe
936	okx.exe
1744	explorer.exe
1744	explorer.exe
1744	explorer.exe
1744	explorer.exe
1744	explorer.exe
1744	explorer.exe
1744	explorer.exe
1744	explorer.exe
1744	explorer.exe
1744	explorer.exe
1744	explorer.exe
1744	explorer.exe
936	okx.exe
1744	explorer.exe
1744	explorer.exe

Suspicious use of SendNotifyMessage 19 IoCs

pid	Process
1744	explorer.exe
1744	explorer.exe
1744	explorer.exe
1744	explorer.exe
1744	explorer.exe
1744	explorer.exe
1744	explorer.exe
1744	explorer.exe
1744	explorer.exe
1744	explorer.exe
1744	explorer.exe
1744	explorer.exe
1744	explorer.exe
1744	explorer.exe
1744	explorer.exe
1744	explorer.exe
1744	explorer.exe
1744	explorer.exe
936	okx.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 856 wrote to memory of 936	856	98dae5d33c5c679a7a43cfad922a0cb8986ed4551499cd810b74a35756068a83.exe	27
PID 856 wrote to memory of 936	856	98dae5d33c5c679a7a43cfad922a0cb8986ed4551499cd810b74a35756068a83.exe	27
PID 856 wrote to memory of 936	856	98dae5d33c5c679a7a43cfad922a0cb8986ed4551499cd810b74a35756068a83.exe	27
PID 856 wrote to memory of 936	856	98dae5d33c5c679a7a43cfad922a0cb8986ed4551499cd810b74a35756068a83.exe	27

C:\Users\Admin\AppData\Local\Temp\98dae5d33c5c679a7a43cfad922a0cb8986ed4551499cd810b74a35756068a83.exe
"C:\Users\Admin\AppData\Local\Temp\98dae5d33c5c679a7a43cfad922a0cb8986ed4551499cd810b74a35756068a83.exe"
1⤵
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:856
- C:\Users\Admin\AppData\Local\okx.exe
  "C:\Users\Admin\AppData\Local\okx.exe" -gav C:\Users\Admin\AppData\Local\Temp\98dae5d33c5c679a7a43cfad922a0cb8986ed4551499cd810b74a35756068a83.exe
  2⤵
  - Modifies system executable filetype association
  - Executes dropped EXE
  - Deletes itself
  - Adds Run key to start application
  - Modifies registry class
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  PID:936

C:\Windows\explorer.exe
explorer.exe
1⤵
- Modifies Installed Components in the registry
- Modifies registry class
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
PID:1744

C:\Windows\system32\AUDIODG.EXE
C:\Windows\system32\AUDIODG.EXE 0x558
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:756

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Change Default File Association

T1042

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\okx.exe

Filesize
198KB

MD5
494a5e774ab9f2749d830eb5c9a0ba98

SHA1
ce23beb22725b6cb54146fee82628454ee1cfc1d

SHA256
736ddddbf2df4f96bbad0e5c001c008f2fec771c16d85587d49bfaaf5008825a

SHA512
225137697305cb785afea2630ff723c86decd5fdb7caffccfdb930040a38dba167e550281df309b266c319423364699c9163cbebff2895f0670526d075ed56cf

Download Submit
C:\Users\Admin\AppData\Local\okx.exe

Filesize
198KB

MD5
494a5e774ab9f2749d830eb5c9a0ba98

SHA1
ce23beb22725b6cb54146fee82628454ee1cfc1d

SHA256
736ddddbf2df4f96bbad0e5c001c008f2fec771c16d85587d49bfaaf5008825a

SHA512
225137697305cb785afea2630ff723c86decd5fdb7caffccfdb930040a38dba167e550281df309b266c319423364699c9163cbebff2895f0670526d075ed56cf

Download Submit
\Users\Admin\AppData\Local\okx.exe

Filesize
198KB

MD5
494a5e774ab9f2749d830eb5c9a0ba98

SHA1
ce23beb22725b6cb54146fee82628454ee1cfc1d

SHA256
736ddddbf2df4f96bbad0e5c001c008f2fec771c16d85587d49bfaaf5008825a

SHA512
225137697305cb785afea2630ff723c86decd5fdb7caffccfdb930040a38dba167e550281df309b266c319423364699c9163cbebff2895f0670526d075ed56cf

Download Submit
\Users\Admin\AppData\Local\okx.exe

Filesize
198KB

MD5
494a5e774ab9f2749d830eb5c9a0ba98

SHA1
ce23beb22725b6cb54146fee82628454ee1cfc1d

SHA256
736ddddbf2df4f96bbad0e5c001c008f2fec771c16d85587d49bfaaf5008825a

SHA512
225137697305cb785afea2630ff723c86decd5fdb7caffccfdb930040a38dba167e550281df309b266c319423364699c9163cbebff2895f0670526d075ed56cf

Download Submit
memory/856-58-0x0000000000400000-0x0000000000605000-memory.dmp

Filesize
2.0MB

Download
memory/856-65-0x0000000000270000-0x0000000000276000-memory.dmp

Filesize
24KB

Download
memory/856-54-0x0000000000400000-0x0000000000605000-memory.dmp

Filesize
2.0MB

Download
memory/856-55-0x0000000000400000-0x0000000000605000-memory.dmp

Filesize
2.0MB

Download
memory/856-57-0x0000000075D01000-0x0000000075D03000-memory.dmp

Filesize
8KB

Download
memory/856-56-0x0000000000270000-0x0000000000276000-memory.dmp

Filesize
24KB

Download
memory/856-64-0x0000000000400000-0x0000000000605000-memory.dmp

Filesize
2.0MB

Download
memory/856-59-0x0000000002130000-0x00000000023E7000-memory.dmp

Filesize
2.7MB

Download
memory/936-70-0x0000000000400000-0x0000000000605000-memory.dmp

Filesize
2.0MB

Download
memory/936-71-0x0000000000270000-0x0000000000276000-memory.dmp

Filesize
24KB

Download
memory/936-72-0x0000000074B41000-0x0000000074B43000-memory.dmp

Filesize
8KB

Download
memory/936-73-0x0000000000400000-0x0000000000605000-memory.dmp

Filesize
2.0MB

Download
memory/1744-66-0x000007FEFBA91000-0x000007FEFBA93000-memory.dmp

Filesize
8KB

Download