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

Executes dropped EXE 2 IoCs

pid	Process
4852	wuaucldt.exe
4708	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-1-5-21-3803511929-1339359695-2191195476-1000\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 4708 set thread context of 4416	4708	wuaucldt.exe	104

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeManageVolumePrivilege	1828	svchost.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 2056 wrote to memory of 4852	2056	64c2631c63e2dda269239b97fe197ca7.exe	53
PID 2056 wrote to memory of 4852	2056	64c2631c63e2dda269239b97fe197ca7.exe	53
PID 2056 wrote to memory of 4852	2056	64c2631c63e2dda269239b97fe197ca7.exe	53
PID 4852 wrote to memory of 4708	4852	wuaucldt.exe	89
PID 4852 wrote to memory of 4708	4852	wuaucldt.exe	89
PID 4852 wrote to memory of 4708	4852	wuaucldt.exe	89
PID 2056 wrote to memory of 5016	2056	64c2631c63e2dda269239b97fe197ca7.exe	94
PID 2056 wrote to memory of 5016	2056	64c2631c63e2dda269239b97fe197ca7.exe	94
PID 2056 wrote to memory of 5016	2056	64c2631c63e2dda269239b97fe197ca7.exe	94
PID 4708 wrote to memory of 4416	4708	wuaucldt.exe	104
PID 4708 wrote to memory of 4416	4708	wuaucldt.exe	104
PID 4708 wrote to memory of 4416	4708	wuaucldt.exe	104
PID 4708 wrote to memory of 4416	4708	wuaucldt.exe	104
PID 4708 wrote to memory of 4416	4708	wuaucldt.exe	104
PID 4852 wrote to memory of 3552	4852	wuaucldt.exe	103
PID 4852 wrote to memory of 3552	4852	wuaucldt.exe	103
PID 4852 wrote to memory of 3552	4852	wuaucldt.exe	103

C:\Users\Admin\AppData\Local\Temp\64c2631c63e2dda269239b97fe197ca7.exe
"C:\Users\Admin\AppData\Local\Temp\64c2631c63e2dda269239b97fe197ca7.exe"
1⤵
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
PID:2056
- \??\c:\windows\SysWOW64\wuaucldt.exe
  c:\windows\system32\wuaucldt.exe
  2⤵
  - Executes dropped EXE
  - Drops file in System32 directory
  - Suspicious use of WriteProcessMemory
  PID:4852
- - \??\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:4708
  - - C:\Windows\SysWOW64\svchost.exe
      C:\Windows\system32\svchost.exe
      4⤵
      Writes to the Master Boot Record (MBR)
      PID:4416
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c del c:\windows\syswow64\wuaucldt.exe
    3⤵
    PID:3552
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c del c:\users\admin\appdata\local\temp\64C263~1.EXE
  2⤵
  PID:5016

C:\Windows\system32\rundll32.exe
"C:\Windows\system32\rundll32.exe" "C:\Windows\SYSTEM32\EDGEHTML.dll",#141 Microsoft.VCLibs.140.00_8wekyb3d8bbwe
1⤵
PID:4996

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k UnistackSvcGroup
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1828

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

Replay Monitor

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Downloads

C:\Windows\SysWOW64\wuaucldt.exe

Filesize
32KB

MD5
64c2631c63e2dda269239b97fe197ca7

SHA1
42eee889ee7dc32cc8aa440c9191e75e9e6052ca

SHA256
4ce4be54c5f08a11294988dc7d719fdaa8924a5152e2458858ee8c645d9a411e

SHA512
54bff8a9f7b7bcb1f3ab296d3392b1424daeffd097b7e7a9e9eae5504a89fe7e1a9f9ff458ed81540146bea2449e7d051ce0a64add810bf2e160bd13fd783019

Download Submit
memory/2056-16-0x0000000000400000-0x0000000000423000-memory.dmp

Filesize
140KB

Download
memory/2056-1-0x0000000009000000-0x0000000009009000-memory.dmp

Filesize
36KB

Download
memory/2056-0-0x0000000000400000-0x0000000000423000-memory.dmp

Filesize
140KB

Download
memory/2056-3-0x0000000070000000-0x000000007000B000-memory.dmp

Filesize
44KB

Download
memory/2056-2-0x0000000009000000-0x0000000009009000-memory.dmp

Filesize
36KB

Download
memory/2056-17-0x0000000070000000-0x000000007000B000-memory.dmp

Filesize
44KB

Download
memory/4416-21-0x00000000003E0000-0x00000000003E9000-memory.dmp

Filesize
36KB

Download
memory/4416-25-0x00000000003E0000-0x00000000003E9000-memory.dmp

Filesize
36KB

Download
memory/4416-27-0x00000000003E0000-0x00000000003E9000-memory.dmp

Filesize
36KB

Download
memory/4416-24-0x00000000003E0000-0x00000000003E9000-memory.dmp

Filesize
36KB

Download
memory/4416-23-0x00000000003E0000-0x00000000003E9000-memory.dmp

Filesize
36KB

Download
memory/4416-22-0x00000000003E0000-0x00000000003E9000-memory.dmp

Filesize
36KB

Download
memory/4708-19-0x0000000070000000-0x000000007000B000-memory.dmp

Filesize
44KB

Download
memory/4852-9-0x0000000000400000-0x0000000000423000-memory.dmp

Filesize
140KB

Download
memory/4852-49-0x0000000070000000-0x000000007000B000-memory.dmp

Filesize
44KB

Download
memory/4852-48-0x0000000000400000-0x0000000000423000-memory.dmp

Filesize
140KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads