e9751abc05c3080651b583ff5f23767870c19590e5b3e7d5753879e57b311af6

Analysis

max time kernel
45s
max time network
51s
platform
windows7_x64
resource
win7-20220901-en
resource tags

arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
submitted
03/12/2022, 11:41

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General

Target

e9751abc05c3080651b583ff5f23767870c19590e5b3e7d5753879e57b311af6.dll
Size

236KB
MD5

fd806b38b3d709df59db61825106208b
SHA1

b8b71e9e0d3b7df2878215644bf1a72851930455
SHA256

e9751abc05c3080651b583ff5f23767870c19590e5b3e7d5753879e57b311af6
SHA512

9ff9d5eedc6123d2151fa29b818ca80291491fd1f8fe1e2dc43fdba3a01e8ec61600ddcfdca35d6dd7ccfe2a6e93b83f7e6c7f5aa64357fd4f7187801a59c39a
SSDEEP

1536:Iguo2K86vta10RJQYPIHL+D5IWhxRh/Ci4ucg3/+k5ltr+DRPG8Gz7wk+cQvMf:Go256vS0RJAL+lHPKi40+66iwkD0U

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\hftwukn = "{73d002fe-fb58-40ad-0c69-fb588a763328}"	rundll32.exe

Loads dropped DLL 1 IoCs

pid	Process
1356	rundll32.exe

Drops file in System32 directory 4 IoCs

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

Modifies registry class 5 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{73d002fe-fb58-40ad-0c69-fb588a763328}\	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{73d002fe-fb58-40ad-0c69-fb588a763328}\InprocServer32	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{73d002fe-fb58-40ad-0c69-fb588a763328}\InprocServer32\ = "C:\\Windows\\SysWow64\\caorpfi.dll"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{73d002fe-fb58-40ad-0c69-fb588a763328}\InprocServer32\ThreadingModel = "Apartment"	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{73d002fe-fb58-40ad-0c69-fb588a763328}	rundll32.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1356	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1356	rundll32.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1356	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1308 wrote to memory of 1356	1308	rundll32.exe	27
PID 1308 wrote to memory of 1356	1308	rundll32.exe	27
PID 1308 wrote to memory of 1356	1308	rundll32.exe	27
PID 1308 wrote to memory of 1356	1308	rundll32.exe	27
PID 1308 wrote to memory of 1356	1308	rundll32.exe	27
PID 1308 wrote to memory of 1356	1308	rundll32.exe	27
PID 1308 wrote to memory of 1356	1308	rundll32.exe	27

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\e9751abc05c3080651b583ff5f23767870c19590e5b3e7d5753879e57b311af6.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1308
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\e9751abc05c3080651b583ff5f23767870c19590e5b3e7d5753879e57b311af6.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:1356

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\usgjhxa.dll

Filesize
625KB

MD5
95e2376b3323f062eb562b8586d0f14a

SHA1
453d4c3bf4a489433b593420a37bbffb7749875a

SHA256
bd3fa8750123d00aa0967fba44372c46ea002681da9c9b77a4f9261553e26017

SHA512
b898603d07a49237e4dfc6872d5caa7616bae1258926f10e66c4d3f0d81cccefac1e844395b65bb1f308fbc022061b52e51f60658d0a546c04b365b3428cc87d

Download Submit
memory/1356-55-0x0000000074DA1000-0x0000000074DA3000-memory.dmp

Filesize
8KB

Download
memory/1356-56-0x00000000001C0000-0x0000000000204000-memory.dmp

Filesize
272KB

Download
memory/1356-58-0x00000000001C0000-0x0000000000204000-memory.dmp

Filesize
272KB

Download
memory/1356-59-0x00000000001C0000-0x0000000000204000-memory.dmp

Filesize
272KB

Download