dd8edd03f184cbf62873b3039e9720dfea339352518dc33007e47d2d39c949c2

Analysis

max time kernel
120s
max time network
125s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
29/12/2023, 20:37

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General

Target

03586d6d1534fc29ab4fda3fbd66a7ea.dll
Size

236KB
MD5

03586d6d1534fc29ab4fda3fbd66a7ea
SHA1

af564a4277ff6fe6678b9e6c0dfaef5a396dad08
SHA256

dd8edd03f184cbf62873b3039e9720dfea339352518dc33007e47d2d39c949c2
SHA512

d00fdab581d52e5932a7c2318900a8eb74d6509b0666cc49db5292d87984cff8c2f765d7ae9c3494bb90a432f2ea8cfb9f12a67bdfe58ba7ba9a906645810363
SSDEEP

1536:Iguo2K86vta10RJQYPIHL+D5IWhxRh/Ci4ucg3/+k5ltr+DRPG8Gz7wk+cQvMr:Go256vS0RJAL+lHPKi40+66iwkD08

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

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\ShellServiceObjectDelayLoad\hccbm = "{fa07e0f9-728f-c7d4-8390-728f687110bb}"	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\ShellServiceObjectDelayLoad	rundll32.exe

Loads dropped DLL 1 IoCs

pid	Process
2372	rundll32.exe

Drops file in System32 directory 4 IoCs

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

Modifies registry class 5 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{fa07e0f9-728f-c7d4-8390-728f687110bb}\InprocServer32\ThreadingModel = "Apartment"	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{fa07e0f9-728f-c7d4-8390-728f687110bb}	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{fa07e0f9-728f-c7d4-8390-728f687110bb}\	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{fa07e0f9-728f-c7d4-8390-728f687110bb}\InprocServer32	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{fa07e0f9-728f-c7d4-8390-728f687110bb}\InprocServer32\ = "C:\\Windows\\SysWow64\\cxxwh.dll"	rundll32.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2372	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2372	rundll32.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2372	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2040 wrote to memory of 2372	2040	rundll32.exe	28
PID 2040 wrote to memory of 2372	2040	rundll32.exe	28
PID 2040 wrote to memory of 2372	2040	rundll32.exe	28
PID 2040 wrote to memory of 2372	2040	rundll32.exe	28
PID 2040 wrote to memory of 2372	2040	rundll32.exe	28
PID 2040 wrote to memory of 2372	2040	rundll32.exe	28
PID 2040 wrote to memory of 2372	2040	rundll32.exe	28

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\03586d6d1534fc29ab4fda3fbd66a7ea.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2040
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\03586d6d1534fc29ab4fda3fbd66a7ea.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:2372

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

Replay Monitor

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Downloads

\Windows\SysWOW64\uppoz.dll

Filesize
625KB

MD5
95e2376b3323f062eb562b8586d0f14a

SHA1
453d4c3bf4a489433b593420a37bbffb7749875a

SHA256
bd3fa8750123d00aa0967fba44372c46ea002681da9c9b77a4f9261553e26017

SHA512
b898603d07a49237e4dfc6872d5caa7616bae1258926f10e66c4d3f0d81cccefac1e844395b65bb1f308fbc022061b52e51f60658d0a546c04b365b3428cc87d

Download Submit
memory/2372-0-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download
memory/2372-8-0x0000000075E50000-0x0000000075EF0000-memory.dmp

Filesize
640KB

Download
memory/2372-9-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download
memory/2372-10-0x0000000075E50000-0x0000000075EF0000-memory.dmp

Filesize
640KB

Download