b7e9ca106429a04c13dca37a1d43114199a6a1606e689f924760e6987d44c20e

Analysis

max time kernel
121s
max time network
139s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
31/12/2023, 03:40

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General

Target

26b3be28bd80be9619b28fb0b9245575.dll
Size

236KB
MD5

26b3be28bd80be9619b28fb0b9245575
SHA1

462baecbfc4056d23bf2ab75f7797b6e4266b25b
SHA256

b7e9ca106429a04c13dca37a1d43114199a6a1606e689f924760e6987d44c20e
SHA512

743e5c0150d89e6685c4f9499f4f637a832c5363bc1ce36dfe49c63fac1719cce282c2ba0b7619a8a63806bff070210456e90ee549eb8b3d838245d46bdd9361
SSDEEP

1536:Iguo2K86vta10RJQYPIHL+D5IWhxRh/Ci4ucg3/+k5ltr+DRPG8Gz7wk+cQvMx:Go256vS0RJAL+lHPKi40+66iwkD0G

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\wmqbu = "{ceaf02fb-4627-9b7c-5738-46278a7302ad}"	rundll32.exe

Loads dropped DLL 1 IoCs

pid	Process
1956	rundll32.exe

Drops file in System32 directory 4 IoCs

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

Modifies registry class 5 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{ceaf02fb-4627-9b7c-5738-46278a7302ad}\	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{ceaf02fb-4627-9b7c-5738-46278a7302ad}\InprocServer32	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{ceaf02fb-4627-9b7c-5738-46278a7302ad}\InprocServer32\ = "C:\\Windows\\SysWow64\\rhlwp.dll"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{ceaf02fb-4627-9b7c-5738-46278a7302ad}\InprocServer32\ThreadingModel = "Apartment"	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{ceaf02fb-4627-9b7c-5738-46278a7302ad}	rundll32.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1956	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1956	rundll32.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1956	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1764 wrote to memory of 1956	1764	rundll32.exe	28
PID 1764 wrote to memory of 1956	1764	rundll32.exe	28
PID 1764 wrote to memory of 1956	1764	rundll32.exe	28
PID 1764 wrote to memory of 1956	1764	rundll32.exe	28
PID 1764 wrote to memory of 1956	1764	rundll32.exe	28
PID 1764 wrote to memory of 1956	1764	rundll32.exe	28
PID 1764 wrote to memory of 1956	1764	rundll32.exe	28

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\26b3be28bd80be9619b28fb0b9245575.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1764
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\26b3be28bd80be9619b28fb0b9245575.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:1956

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\jzdoh.dll

Filesize
512KB

MD5
84d57279a4265c83e191956672971353

SHA1
c1c22773e37ab44a59ca334ff10e4c89a3a1a54e

SHA256
f18885498843331ea4735ea7ce129873c039c863971247a18c2ab212424b09c8

SHA512
9c528692df535c50473947d6f3d09b04cabeb26cbc441126a9dff8a192368b494c8c607f509ec6468c5ea92ec9753daa81c9000db5bcac8e51e93689e18a8617

Download Submit
memory/1956-0-0x00000000001A0000-0x00000000001E4000-memory.dmp

Filesize
272KB

Download
memory/1956-1-0x00000000001A0000-0x00000000001E4000-memory.dmp

Filesize
272KB

Download
memory/1956-7-0x0000000074D10000-0x0000000074DB0000-memory.dmp

Filesize
640KB

Download
memory/1956-10-0x00000000001A0000-0x00000000001E4000-memory.dmp

Filesize
272KB

Download
memory/1956-11-0x0000000074D10000-0x0000000074DB0000-memory.dmp

Filesize
640KB

Download