0a8fbca4fb02dfa59d19d5db026a266b8aa08c5337c6886b137d8eb957572fc1

Analysis

max time kernel
33s
max time network
42s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
02/10/2022, 14:18

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General

Target

0a8fbca4fb02dfa59d19d5db026a266b8aa08c5337c6886b137d8eb957572fc1.dll
Size

236KB
MD5

6490120055f07fa807f4f514cbde98f5
SHA1

4fb9e3d71a674ddc4abd86ae2e6afaac93844b43
SHA256

0a8fbca4fb02dfa59d19d5db026a266b8aa08c5337c6886b137d8eb957572fc1
SHA512

99cca3735325dc3fb844b1a0c53b18bcc741400e124e0aea348dfc986539c92e47c8be87c4bc2ea75ad46b9453605a0c3546cdbe476ef7ca156d14791ab96e96
SSDEEP

1536:Iguo2K86vta10RJQYPIHL+D5IWhxRh/Ci4ucg3/+k5ltr+DRPG8Gz7wk+cQvMG:Go256vS0RJAL+lHPKi40+66iwkD0J

Score

10^/10

persistence

Malware Config

Signatures

Adds autorun key to be loaded by Explorer.exe on startup 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\ShellServiceObjectDelayLoad	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\ShellServiceObjectDelayLoad\cxa = "{2568a5bb-ade0-f235-bef1-ade02d334073}"	rundll32.exe

Loads dropped DLL 1 IoCs

pid	Process
1620	rundll32.exe

Drops file in System32 directory 4 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\pkn.dll	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\pkn.dll	rundll32.exe
File created	C:\Windows\SysWOW64\xsv.dll	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\xsv.dll	rundll32.exe

Modifies registry class 5 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{2568a5bb-ade0-f235-bef1-ade02d334073}\InprocServer32	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{2568a5bb-ade0-f235-bef1-ade02d334073}\InprocServer32\ = "C:\\Windows\\SysWow64\\xsv.dll"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{2568a5bb-ade0-f235-bef1-ade02d334073}\InprocServer32\ThreadingModel = "Apartment"	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{2568a5bb-ade0-f235-bef1-ade02d334073}	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{2568a5bb-ade0-f235-bef1-ade02d334073}\	rundll32.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1620	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1620	rundll32.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1620	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 364 wrote to memory of 1620	364	rundll32.exe	26
PID 364 wrote to memory of 1620	364	rundll32.exe	26
PID 364 wrote to memory of 1620	364	rundll32.exe	26
PID 364 wrote to memory of 1620	364	rundll32.exe	26
PID 364 wrote to memory of 1620	364	rundll32.exe	26
PID 364 wrote to memory of 1620	364	rundll32.exe	26
PID 364 wrote to memory of 1620	364	rundll32.exe	26

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\0a8fbca4fb02dfa59d19d5db026a266b8aa08c5337c6886b137d8eb957572fc1.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:364
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\0a8fbca4fb02dfa59d19d5db026a266b8aa08c5337c6886b137d8eb957572fc1.dll,#1
  2⤵
  - Adds autorun key to be loaded by Explorer.exe on startup
  - Loads dropped DLL
  - Drops file in System32 directory
  - Modifies registry class
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:1620

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

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

\Windows\SysWOW64\pkn.dll

Filesize
625KB

MD5
95e2376b3323f062eb562b8586d0f14a

SHA1
453d4c3bf4a489433b593420a37bbffb7749875a

SHA256
bd3fa8750123d00aa0967fba44372c46ea002681da9c9b77a4f9261553e26017

SHA512
b898603d07a49237e4dfc6872d5caa7616bae1258926f10e66c4d3f0d81cccefac1e844395b65bb1f308fbc022061b52e51f60658d0a546c04b365b3428cc87d

Download Submit
memory/1620-55-0x0000000076681000-0x0000000076683000-memory.dmp

Filesize
8KB

Download
memory/1620-56-0x0000000000380000-0x00000000003C4000-memory.dmp

Filesize
272KB

Download
memory/1620-58-0x0000000000380000-0x00000000003C4000-memory.dmp

Filesize
272KB

Download
memory/1620-59-0x0000000000380000-0x00000000003C4000-memory.dmp

Filesize
272KB

Download