41e3ca9433fb114e0a354c2e165ec36e1869fbbe71a34bdc4bdf1e67b2e175fe

Analysis

max time kernel
165s
max time network
182s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
30-12-2023 10:09

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General

Target

156bc530f752631a64bd470c23e86c7d.dll
Size

236KB
MD5

156bc530f752631a64bd470c23e86c7d
SHA1

275f370e92d56249f9a05c7bd6d68e410142471f
SHA256

41e3ca9433fb114e0a354c2e165ec36e1869fbbe71a34bdc4bdf1e67b2e175fe
SHA512

a40697c4306660065638cf09b2bd54d38475e5fdf858ac3a47c91220340ee0fea86d68b0c1eae322c52850b0d1cd9e39c7ecf4f01dfc7e2b9743ce5a1837f7da
SSDEEP

3072:SeqmgHwlaazN9U3J+P0wFp+bLrt2wkkI3:+Qj9U3jwO3rt5U

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\kwd = "{c2f6d774-4a7e-9fc3-5b8f-4a7e5ffc83fe}"	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\ShellServiceObjectDelayLoad	rundll32.exe

Loads dropped DLL 1 IoCs

pid	Process
552	rundll32.exe

Drops file in System32 directory 4 IoCs

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

Modifies registry class 5 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{c2f6d774-4a7e-9fc3-5b8f-4a7e5ffc83fe}	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{c2f6d774-4a7e-9fc3-5b8f-4a7e5ffc83fe}\	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{c2f6d774-4a7e-9fc3-5b8f-4a7e5ffc83fe}\InprocServer32	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{c2f6d774-4a7e-9fc3-5b8f-4a7e5ffc83fe}\InprocServer32\ = "C:\\Windows\\SysWow64\\fry.dll"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{c2f6d774-4a7e-9fc3-5b8f-4a7e5ffc83fe}\InprocServer32\ThreadingModel = "Apartment"	rundll32.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
552	rundll32.exe
552	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	552	rundll32.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
552	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2028 wrote to memory of 552	2028	rundll32.exe	90
PID 2028 wrote to memory of 552	2028	rundll32.exe	90
PID 2028 wrote to memory of 552	2028	rundll32.exe	90

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\156bc530f752631a64bd470c23e86c7d.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2028
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\156bc530f752631a64bd470c23e86c7d.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:552

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

C:\Windows\SysWOW64\xjq.dll

Filesize
478KB

MD5
e99416267b61f52fa5ab994019efd359

SHA1
86d31eae707db7fe51d2556394fcf0e8e9f6b0fd

SHA256
768c286674371564b5e6095edb56e0a4231f341be895da69cfccca5160029774

SHA512
0a1c7579a9c787c2c1bef35f0660e72e74b42824e14ebea63b87ed25ddaf107e3746567bb431cab41a2f6719fad2c22d96e0715a1fe085d75805d7d66f7f05ae

Download Submit
memory/552-0-0x00000000008F0000-0x0000000000934000-memory.dmp

Filesize
272KB

Download
memory/552-1-0x00000000008F0000-0x0000000000934000-memory.dmp

Filesize
272KB

Download
memory/552-8-0x0000000075990000-0x0000000075A0A000-memory.dmp

Filesize
488KB

Download
memory/552-11-0x00000000008F0000-0x0000000000934000-memory.dmp

Filesize
272KB

Download
memory/552-13-0x0000000075990000-0x0000000075A0A000-memory.dmp

Filesize
488KB

Download