e0ca68f3cc2b8977aa07387c8492a06581db85275c5b68205036780a2d5a8099

Analysis

max time kernel
148s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
24/12/2023, 16:28

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General

Target

05b451c94a1d87800d3d100f59f26ca7.dll
Size

236KB
MD5

05b451c94a1d87800d3d100f59f26ca7
SHA1

cb66ca4280c50bff4bbd0db1c7cf64f7cc0f61f7
SHA256

e0ca68f3cc2b8977aa07387c8492a06581db85275c5b68205036780a2d5a8099
SHA512

950ee1da6b5f75605f20ac4c287f8551148f6d72d8c3bdf32fc8d5ca3f4603e05a36cb08301a783bad7c48beee3b19d4e1b0192f072d931c2745ce3fa1a6b2d4
SSDEEP

1536:Iguo2K86vta10RJQYPIHL+D5IWhxRh/Ci4ucg3/+k5ltr+DRPG8Gz7wk+cQvMh:Go256vS0RJAL+lHPKi40+66iwkD0q

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
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\ShellServiceObjectDelayLoad	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\ShellServiceObjectDelayLoad\vlpug = "{9d324292-15ba-6a0f-26cb-15baca1a58c0}"	rundll32.exe

Loads dropped DLL 1 IoCs

pid	Process
3800	rundll32.exe

Drops file in System32 directory 4 IoCs

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

Modifies registry class 5 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{9d324292-15ba-6a0f-26cb-15baca1a58c0}\InprocServer32\ = "C:\\Windows\\SysWow64\\qgkpb.dll"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{9d324292-15ba-6a0f-26cb-15baca1a58c0}\InprocServer32\ThreadingModel = "Apartment"	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{9d324292-15ba-6a0f-26cb-15baca1a58c0}	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{9d324292-15ba-6a0f-26cb-15baca1a58c0}\	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{9d324292-15ba-6a0f-26cb-15baca1a58c0}\InprocServer32	rundll32.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3800	rundll32.exe
3800	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3800	rundll32.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3800	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2540 wrote to memory of 3800	2540	rundll32.exe	93
PID 2540 wrote to memory of 3800	2540	rundll32.exe	93
PID 2540 wrote to memory of 3800	2540	rundll32.exe	93

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\05b451c94a1d87800d3d100f59f26ca7.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2540
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\05b451c94a1d87800d3d100f59f26ca7.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:3800

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

C:\Windows\SysWOW64\iycht.dll

Filesize
478KB

MD5
e99416267b61f52fa5ab994019efd359

SHA1
86d31eae707db7fe51d2556394fcf0e8e9f6b0fd

SHA256
768c286674371564b5e6095edb56e0a4231f341be895da69cfccca5160029774

SHA512
0a1c7579a9c787c2c1bef35f0660e72e74b42824e14ebea63b87ed25ddaf107e3746567bb431cab41a2f6719fad2c22d96e0715a1fe085d75805d7d66f7f05ae

Download Submit
memory/3800-0-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download
memory/3800-9-0x0000000077570000-0x00000000775EA000-memory.dmp

Filesize
488KB

Download
memory/3800-11-0x0000000077570000-0x00000000775EA000-memory.dmp

Filesize
488KB

Download
memory/3800-10-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download