f131ad72822c0b352a2d9c8f7cb19c2bbcc643670bdb72ba96ea68b4cc818b4e

Analysis

max time kernel
181s
max time network
163s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
06/01/2024, 06:34

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General

Target

45889bbb5092e1eed5e56cd6c81a4d3e.exe
Size

68KB
MD5

45889bbb5092e1eed5e56cd6c81a4d3e
SHA1

5b96ed5f858a588b3adf6731dc1f7b12f4377c91
SHA256

f131ad72822c0b352a2d9c8f7cb19c2bbcc643670bdb72ba96ea68b4cc818b4e
SHA512

d2af3c1cfcb41581c3c7d192324d36efaf02350b68f8ffe96c083dd1d87f95f46488d551b953b135dae8e7f4457f51ed21873e83b02d76e6331cd44169221463
SSDEEP

1536:wzoClC9mEx0lbt6p1u6Z6iSw/W9DWUlDZ8riVgyf0HjrD7kMKzgPa:govxvHjkCNMNqKsa

Score

8^/10

persistence

Malware Config

Signatures

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\drivers\cxgzky.SYS	45889bbb5092e1eed5e56cd6c81a4d3e.exe

Sets DLL path for service in the registry 2 TTPs 3 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\kksuol\Parameters\ServiceDll = "%SystemRoot%\\System32\\cxgzky.dll"	45889bbb5092e1eed5e56cd6c81a4d3e.exe
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet002\services\kksuol\Parameters\ServiceDll = "%SystemRoot%\\System32\\cxgzky.dll"	45889bbb5092e1eed5e56cd6c81a4d3e.exe
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet003\Services\kksuol\Parameters\ServiceDll = "%SystemRoot%\\System32\\cxgzky.dll"	45889bbb5092e1eed5e56cd6c81a4d3e.exe

Deletes itself 1 IoCs

pid	Process
2856	svchost.exe

Loads dropped DLL 2 IoCs

pid	Process
2768	45889bbb5092e1eed5e56cd6c81a4d3e.exe
2856	svchost.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\05c519.log	45889bbb5092e1eed5e56cd6c81a4d3e.exe
File created	C:\Windows\SysWOW64\cxgzky.dll	45889bbb5092e1eed5e56cd6c81a4d3e.exe

Suspicious behavior: LoadsDriver 1 IoCs

pid	Process
468	Process not Found

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
2856	svchost.exe
2856	svchost.exe
2856	svchost.exe

C:\Users\Admin\AppData\Local\Temp\45889bbb5092e1eed5e56cd6c81a4d3e.exe
"C:\Users\Admin\AppData\Local\Temp\45889bbb5092e1eed5e56cd6c81a4d3e.exe"
1⤵
- Drops file in Drivers directory
- Sets DLL path for service in the registry
- Loads dropped DLL
- Drops file in System32 directory
PID:2768

C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k kksuol
1⤵
- Deletes itself
- Loads dropped DLL
- Suspicious use of SetWindowsHookEx
PID:2856

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

\Windows\SysWOW64\cxgzky.dll

Filesize
93KB

MD5
d8e558bc65f73f39721ebfa99db82b14

SHA1
afdf57a7afce2ae667fd17ff652f7384f6614efe

SHA256
8789c5ada70bce856f875a8ccc3b82a29312e91e4273665409de83411788a10a

SHA512
a88fe6dcb051491241bc7231a3028f0ab110e051f52bc6fae240845a1cdfafb5becf12f10bd264dc99a39d121ac82b3b4c352ce765cdd42371d88dd7c32e29a2

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads