4ce4be54c5f08a11294988dc7d719fdaa8924a5152e2458858ee8c645d9a411e

General

Target

64c2631c63e2dda269239b97fe197ca7.exe
Size

32KB
MD5

64c2631c63e2dda269239b97fe197ca7
SHA1

42eee889ee7dc32cc8aa440c9191e75e9e6052ca
SHA256

4ce4be54c5f08a11294988dc7d719fdaa8924a5152e2458858ee8c645d9a411e
SHA512

54bff8a9f7b7bcb1f3ab296d3392b1424daeffd097b7e7a9e9eae5504a89fe7e1a9f9ff458ed81540146bea2449e7d051ce0a64add810bf2e160bd13fd783019
SSDEEP

768:cDuKgYj4haOObykDPsSESO84DdDhPmSO7RnqS3h3e:13Yj48OOOouxdDcSO1nj

Score

7^/10

Malware Config

Signatures

Deletes itself 1 IoCs

pid	Process
2860	cmd.exe

Executes dropped EXE 2 IoCs

pid	Process
2392	wuaucldt.exe
2716	wuaucldt.exe

Loads dropped DLL 4 IoCs

pid	Process
2176	64c2631c63e2dda269239b97fe197ca7.exe
2176	64c2631c63e2dda269239b97fe197ca7.exe
2392	wuaucldt.exe
2392	wuaucldt.exe

Adds Run key to start application 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\Run\wuaucldt = "c:\\windows\\system32\\wuaucldt.exe"	wuaucldt.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1268429524-3929314613-1992311491-1000\Software\Microsoft\Windows\CurrentVersion\Run\wuaucldt = "c:\\users\\admin\\wuaucldt.exe"	wuaucldt.exe

Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

Bootkits write to the MBR to gain persistence at a level below the operating system.

bootkit persistence

Bootkit

T1542.003

description	ioc	Process
File opened for modification	\??\PhysicalDrive0	svchost.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	\??\c:\windows\SysWOW64\wuaucldt.exe	64c2631c63e2dda269239b97fe197ca7.exe
File created	\??\c:\windows\SysWOW64\wuaucldt.exe	wuaucldt.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2716 set thread context of 2640	2716	wuaucldt.exe	32

Suspicious use of WriteProcessMemory 22 IoCs

description	pid	Process	procid_target
PID 2176 wrote to memory of 2392	2176	64c2631c63e2dda269239b97fe197ca7.exe	28
PID 2176 wrote to memory of 2392	2176	64c2631c63e2dda269239b97fe197ca7.exe	28
PID 2176 wrote to memory of 2392	2176	64c2631c63e2dda269239b97fe197ca7.exe	28
PID 2176 wrote to memory of 2392	2176	64c2631c63e2dda269239b97fe197ca7.exe	28
PID 2392 wrote to memory of 2716	2392	wuaucldt.exe	29
PID 2392 wrote to memory of 2716	2392	wuaucldt.exe	29
PID 2392 wrote to memory of 2716	2392	wuaucldt.exe	29
PID 2392 wrote to memory of 2716	2392	wuaucldt.exe	29
PID 2176 wrote to memory of 2860	2176	64c2631c63e2dda269239b97fe197ca7.exe	30
PID 2176 wrote to memory of 2860	2176	64c2631c63e2dda269239b97fe197ca7.exe	30
PID 2176 wrote to memory of 2860	2176	64c2631c63e2dda269239b97fe197ca7.exe	30
PID 2176 wrote to memory of 2860	2176	64c2631c63e2dda269239b97fe197ca7.exe	30
PID 2716 wrote to memory of 2640	2716	wuaucldt.exe	32
PID 2716 wrote to memory of 2640	2716	wuaucldt.exe	32
PID 2716 wrote to memory of 2640	2716	wuaucldt.exe	32
PID 2716 wrote to memory of 2640	2716	wuaucldt.exe	32
PID 2716 wrote to memory of 2640	2716	wuaucldt.exe	32
PID 2716 wrote to memory of 2640	2716	wuaucldt.exe	32
PID 2392 wrote to memory of 2952	2392	wuaucldt.exe	33
PID 2392 wrote to memory of 2952	2392	wuaucldt.exe	33
PID 2392 wrote to memory of 2952	2392	wuaucldt.exe	33
PID 2392 wrote to memory of 2952	2392	wuaucldt.exe	33

C:\Users\Admin\AppData\Local\Temp\64c2631c63e2dda269239b97fe197ca7.exe
"C:\Users\Admin\AppData\Local\Temp\64c2631c63e2dda269239b97fe197ca7.exe"
1⤵
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
PID:2176
- \??\c:\windows\SysWOW64\wuaucldt.exe
  c:\windows\system32\wuaucldt.exe
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops file in System32 directory
  - Suspicious use of WriteProcessMemory
  PID:2392
- - \??\c:\users\admin\wuaucldt.exe
    c:\users\admin\wuaucldt.exe
    3⤵
    - Executes dropped EXE
    - Adds Run key to start application
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:2716
  - - C:\Windows\SysWOW64\svchost.exe
      C:\Windows\system32\svchost.exe
      4⤵
      Writes to the Master Boot Record (MBR)
      PID:2640
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c del c:\windows\syswow64\wuaucldt.exe
    3⤵
    PID:2952
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c del c:\users\admin\appdata\local\temp\64C263~1.EXE
  2⤵
  - Deletes itself
  PID:2860

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Pre-OS Boot

1

T1542

Bootkit

1

T1542.003

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Pre-OS Boot

1

T1542

Bootkit

1

T1542.003

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

\Windows\SysWOW64\wuaucldt.exe

Filesize
32KB

MD5
64c2631c63e2dda269239b97fe197ca7

SHA1
42eee889ee7dc32cc8aa440c9191e75e9e6052ca

SHA256
4ce4be54c5f08a11294988dc7d719fdaa8924a5152e2458858ee8c645d9a411e

SHA512
54bff8a9f7b7bcb1f3ab296d3392b1424daeffd097b7e7a9e9eae5504a89fe7e1a9f9ff458ed81540146bea2449e7d051ce0a64add810bf2e160bd13fd783019

Download Submit
memory/2176-0-0x0000000000400000-0x0000000000423000-memory.dmp

Filesize
140KB

Download
memory/2176-2-0x0000000009000000-0x0000000009009000-memory.dmp

Filesize
36KB

Download
memory/2176-1-0x0000000009000000-0x0000000009009000-memory.dmp

Filesize
36KB

Download
memory/2176-5-0x0000000070000000-0x000000007000B000-memory.dmp

Filesize
44KB

Download
memory/2176-13-0x0000000000280000-0x00000000002A3000-memory.dmp

Filesize
140KB

Download
memory/2176-28-0x0000000000400000-0x0000000000423000-memory.dmp

Filesize
140KB

Download
memory/2392-25-0x0000000001C60000-0x0000000001C83000-memory.dmp

Filesize
140KB

Download
memory/2392-27-0x0000000001C60000-0x0000000001C83000-memory.dmp

Filesize
140KB

Download
memory/2392-14-0x0000000000400000-0x0000000000423000-memory.dmp

Filesize
140KB

Download
memory/2640-32-0x00000000000C0000-0x00000000000C9000-memory.dmp

Filesize
36KB

Download
memory/2640-33-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2640-35-0x00000000000C0000-0x00000000000C9000-memory.dmp

Filesize
36KB

Download
memory/2640-37-0x00000000000C0000-0x00000000000C9000-memory.dmp

Filesize
36KB

Download
memory/2640-38-0x00000000000C0000-0x00000000000C9000-memory.dmp

Filesize
36KB

Download
memory/2640-41-0x00000000000C0000-0x00000000000C9000-memory.dmp

Filesize
36KB

Download
memory/2640-42-0x00000000000C0000-0x00000000000C9000-memory.dmp

Filesize
36KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads