9876f9752f3106f852204e408b54fc8b2948ed550f7ee7e7467db4e5a99aa628

Analysis

max time kernel
41s
max time network
45s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
01/12/2022, 20:42

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General

Target

9876f9752f3106f852204e408b54fc8b2948ed550f7ee7e7467db4e5a99aa628.dll
Size

236KB
MD5

39361409b4dc2cada0e6f3011c56c5f8
SHA1

948b6b70cdc75c24504619bafdbbca4e235c4bbf
SHA256

9876f9752f3106f852204e408b54fc8b2948ed550f7ee7e7467db4e5a99aa628
SHA512

ab7d685d75217b09d8ae56102a27df4e7bb9fe7df2984cde59f6390905b35b5979294fccd59a3364bad56e8fca7036a7b7b1d9bbfb4792f475f63a2a73d5c46c
SSDEEP

1536:Iguo2K86vta10RJQYPIHL+D5IWhxRh/Ci4ucg3/+k5ltr+DRPG8Gz7wk+cQvMW:Go256vS0RJAL+lHPKi40+66iwkD0N

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\pxn = "{bd97a5ff-351f-8a64-4620-351f2d77157d}"	rundll32.exe

Loads dropped DLL 1 IoCs

pid	Process
2004	rundll32.exe

Drops file in System32 directory 4 IoCs

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

Modifies registry class 5 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{bd97a5ff-351f-8a64-4620-351f2d77157d}\InprocServer32\ThreadingModel = "Apartment"	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{bd97a5ff-351f-8a64-4620-351f2d77157d}	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{bd97a5ff-351f-8a64-4620-351f2d77157d}\	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{bd97a5ff-351f-8a64-4620-351f2d77157d}\InprocServer32	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{bd97a5ff-351f-8a64-4620-351f2d77157d}\InprocServer32\ = "C:\\Windows\\SysWow64\\ksi.dll"	rundll32.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2004	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2004	rundll32.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2004	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1280 wrote to memory of 2004	1280	rundll32.exe	28
PID 1280 wrote to memory of 2004	1280	rundll32.exe	28
PID 1280 wrote to memory of 2004	1280	rundll32.exe	28
PID 1280 wrote to memory of 2004	1280	rundll32.exe	28
PID 1280 wrote to memory of 2004	1280	rundll32.exe	28
PID 1280 wrote to memory of 2004	1280	rundll32.exe	28
PID 1280 wrote to memory of 2004	1280	rundll32.exe	28

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\9876f9752f3106f852204e408b54fc8b2948ed550f7ee7e7467db4e5a99aa628.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1280
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\9876f9752f3106f852204e408b54fc8b2948ed550f7ee7e7467db4e5a99aa628.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:2004

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\cka.dll

Filesize
625KB

MD5
95e2376b3323f062eb562b8586d0f14a

SHA1
453d4c3bf4a489433b593420a37bbffb7749875a

SHA256
bd3fa8750123d00aa0967fba44372c46ea002681da9c9b77a4f9261553e26017

SHA512
b898603d07a49237e4dfc6872d5caa7616bae1258926f10e66c4d3f0d81cccefac1e844395b65bb1f308fbc022061b52e51f60658d0a546c04b365b3428cc87d

Download Submit
memory/2004-55-0x0000000075811000-0x0000000075813000-memory.dmp

Filesize
8KB

Download
memory/2004-56-0x00000000006E0000-0x0000000000724000-memory.dmp

Filesize
272KB

Download
memory/2004-58-0x00000000006E0000-0x0000000000724000-memory.dmp

Filesize
272KB

Download
memory/2004-59-0x00000000006E0000-0x0000000000724000-memory.dmp

Filesize
272KB

Download