335406a0bc18126ce44a35d9e95f093bd7f2482689341ac6a435272bcf095134

Analysis

max time kernel
150s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
19/10/2024, 06:05

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General

Target
5b3298d793b39c167b10f41bdbe734b4_JaffaCakes118.exe
Size 59KB
Sample241019-gtb2jstbml
SHA256 335406a0bc18126ce44a35d9e95f093bd7f2482689341ac6a435272bcf095134
MD5 5b3298d793b39c167b10f41bdbe734b4
SHA1 27e06e5143f6654e64adc9a8ee159b7ba227d981
SHA512 9a27170b87f6e0626e55b26bde312c98633b18c3188d5ff09d5bdd457ba95cf085084168525da4280334331eb7e5b0ab4567c4393d58f7fcfe9c9707f4646524
SSDEEP 768:neETYM/cQBUKUdPcrFiFWG76ZOfdz2bD1m5bBb8X/YZSz9vl4jkJhoox:nrEr8Kk5izGCzmD1mpBbral4oYox
MD5 SHA1 SHA512 SSDEEP

Score

7^/10

bootkit defense_evasion discovery persistence

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
1068	wuaucldt.exe
4936	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-1-5-21-493223053-2004649691-1575712786-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\wuaucldt = "c:\\users\\admin\\wuaucldt.exe"	wuaucldt.exe

Indicator Removal: File Deletion 1 TTPs
Adversaries may delete files left behind by the actions of their intrusion activity.
defense_evasion

File Deletion
T1070.004

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	5b3298d793b39c167b10f41bdbe734b4_JaffaCakes118.exe
File created	\??\c:\windows\SysWOW64\wuaucldt.exe	wuaucldt.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4936 set thread context of 3116	4936	wuaucldt.exe	89

System Location Discovery: System Language Discovery 1 TTPs 6 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wuaucldt.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	5b3298d793b39c167b10f41bdbe734b4_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wuaucldt.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 4680 wrote to memory of 1068	4680	5b3298d793b39c167b10f41bdbe734b4_JaffaCakes118.exe	87
PID 4680 wrote to memory of 1068	4680	5b3298d793b39c167b10f41bdbe734b4_JaffaCakes118.exe	87
PID 4680 wrote to memory of 1068	4680	5b3298d793b39c167b10f41bdbe734b4_JaffaCakes118.exe	87
PID 1068 wrote to memory of 4936	1068	wuaucldt.exe	88
PID 1068 wrote to memory of 4936	1068	wuaucldt.exe	88
PID 1068 wrote to memory of 4936	1068	wuaucldt.exe	88
PID 4936 wrote to memory of 3116	4936	wuaucldt.exe	89
PID 4936 wrote to memory of 3116	4936	wuaucldt.exe	89
PID 4936 wrote to memory of 3116	4936	wuaucldt.exe	89
PID 4936 wrote to memory of 3116	4936	wuaucldt.exe	89
PID 4936 wrote to memory of 3116	4936	wuaucldt.exe	89
PID 4680 wrote to memory of 2556	4680	5b3298d793b39c167b10f41bdbe734b4_JaffaCakes118.exe	92
PID 4680 wrote to memory of 2556	4680	5b3298d793b39c167b10f41bdbe734b4_JaffaCakes118.exe	92
PID 4680 wrote to memory of 2556	4680	5b3298d793b39c167b10f41bdbe734b4_JaffaCakes118.exe	92
PID 1068 wrote to memory of 2464	1068	wuaucldt.exe	94
PID 1068 wrote to memory of 2464	1068	wuaucldt.exe	94
PID 1068 wrote to memory of 2464	1068	wuaucldt.exe	94

C:\Users\Admin\AppData\Local\Temp\5b3298d793b39c167b10f41bdbe734b4_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\5b3298d793b39c167b10f41bdbe734b4_JaffaCakes118.exe"
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4680
- \??\c:\windows\SysWOW64\wuaucldt.exe
  c:\windows\system32\wuaucldt.exe
  2⤵
  - Executes dropped EXE
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1068
- - \??\c:\users\admin\wuaucldt.exe
    c:\users\admin\wuaucldt.exe
    3⤵
    - Executes dropped EXE
    - Adds Run key to start application
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4936
  - - C:\Windows\SysWOW64\svchost.exe
      C:\Windows\system32\svchost.exe
      4⤵
      Writes to the Master Boot Record (MBR)
      System Location Discovery: System Language Discovery
      PID:3116
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c del c:\windows\syswow64\wuaucldt.exe
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2464
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c del c:\users\admin\appdata\local\temp\5B3298~1.EXE
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2556

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

Pre-OS Boot

T1542

Bootkit

T1542.003

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Indicator Removal

T1070

File Deletion

T1070.004

Modify Registry

T1112

Pre-OS Boot

T1542

Bootkit

T1542.003

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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wuaucldt.exe

Path C:\Windows\SysWOW64\wuaucldt.exe
Size 59KB
SHA256 335406a0bc18126ce44a35d9e95f093bd7f2482689341ac6a435272bcf095134
MD5 5b3298d793b39c167b10f41bdbe734b4
SHA1 27e06e5143f6654e64adc9a8ee159b7ba227d981
SHA512 9a27170b87f6e0626e55b26bde312c98633b18c3188d5ff09d5bdd457ba95cf085084168525da4280334331eb7e5b0ab4567c4393d58f7fcfe9c9707f4646524
SSDEEP 768:neETYM/cQBUKUdPcrFiFWG76ZOfdz2bD1m5bBb8X/YZSz9vl4jkJhoox:nrEr8Kk5izGCzmD1mpBbral4oYox
MD5 SHA1 SHA512 SSDEEP

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memory/3116-15-0x0000000001270000-0x0000000001279000-memory.dmp

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memory/3116-16-0x0000000001270000-0x0000000001279000-memory.dmp

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memory/3116-17-0x0000000001270000-0x0000000001279000-memory.dmp

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memory/3116-18-0x0000000001270000-0x0000000001279000-memory.dmp

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memory/3116-21-0x0000000001270000-0x0000000001279000-memory.dmp

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memory/3116-22-0x0000000001270000-0x0000000001279000-memory.dmp

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memory/4680-0-0x0000000000400000-0x000000000040EE00-memory.dmp

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memory/4680-1-0x0000000009000000-0x0000000009009000-memory.dmp

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memory/4680-2-0x0000000070000000-0x000000007000B000-memory.dmp

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memory/4680-45-0x0000000000400000-0x000000000040EE00-memory.dmp

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memory/4936-13-0x0000000070000000-0x000000007000B000-memory.dmp

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Analysis

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General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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