b8ebdf1a108a3dd19cc95242a0165cb13ede88008d8f75867f91862dde4334b5

Analysis

max time kernel
150s
max time network
17s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
23/08/2024, 12:53

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General

Target

bbcf0544525372a48cb7d39285974c90_JaffaCakes118.exe
Size

47KB
MD5

bbcf0544525372a48cb7d39285974c90
SHA1

ab8c843a6a622b5e6a8ca5715f287460b06d20d7
SHA256

b8ebdf1a108a3dd19cc95242a0165cb13ede88008d8f75867f91862dde4334b5
SHA512

431e6a9e00211c5a5f63e53c137e7674f028a903e1245805f0a4c318fe0f6641df4bb6d0470369f2e2ee55b0ff32257d8bdef3eea71a40952964e0ae640e60df
SSDEEP

768:RagDcvogUQd2Z9hAOfdvNX9s3SZDGY8yX3S9Blz4p/p:RPoa9hNvNncyX32/I/p

Score

10^/10

bootkit discovery persistence spyware stealer

Malware Config

Signatures

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Userinit = "userinit.exeC:\\Users\\Admin\\AppData\\Roaming\\appconf32.exe,"	TSTheme.exe

Deletes itself 1 IoCs

pid	Process
2340	TSTheme.exe

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

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	TSTheme.exe

System Location Discovery: System Language Discovery 1 TTPs 3 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	bbcf0544525372a48cb7d39285974c90_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	TSTheme.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Modifies Internet Explorer Protected Mode 1 TTPs 1 IoCs

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-2257386474-3982792636-3902186748-1000\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3\2500 = "3"	TSTheme.exe

Modifies Internet Explorer Protected Mode Banner 1 TTPs 1 IoCs

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-2257386474-3982792636-3902186748-1000\Software\Microsoft\Internet Explorer\Main\NoProtectedModeBanner = "1"	TSTheme.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2257386474-3982792636-3902186748-1000\Software\Microsoft\Internet Explorer\Main	TSTheme.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
1496	bbcf0544525372a48cb7d39285974c90_JaffaCakes118.exe
1496	bbcf0544525372a48cb7d39285974c90_JaffaCakes118.exe
1496	bbcf0544525372a48cb7d39285974c90_JaffaCakes118.exe
1496	bbcf0544525372a48cb7d39285974c90_JaffaCakes118.exe
1496	bbcf0544525372a48cb7d39285974c90_JaffaCakes118.exe
1496	bbcf0544525372a48cb7d39285974c90_JaffaCakes118.exe
1496	bbcf0544525372a48cb7d39285974c90_JaffaCakes118.exe
1496	bbcf0544525372a48cb7d39285974c90_JaffaCakes118.exe
1496	bbcf0544525372a48cb7d39285974c90_JaffaCakes118.exe
1496	bbcf0544525372a48cb7d39285974c90_JaffaCakes118.exe
1496	bbcf0544525372a48cb7d39285974c90_JaffaCakes118.exe
1496	bbcf0544525372a48cb7d39285974c90_JaffaCakes118.exe
1496	bbcf0544525372a48cb7d39285974c90_JaffaCakes118.exe
1496	bbcf0544525372a48cb7d39285974c90_JaffaCakes118.exe
1496	bbcf0544525372a48cb7d39285974c90_JaffaCakes118.exe
1496	bbcf0544525372a48cb7d39285974c90_JaffaCakes118.exe
1496	bbcf0544525372a48cb7d39285974c90_JaffaCakes118.exe
1496	bbcf0544525372a48cb7d39285974c90_JaffaCakes118.exe
1496	bbcf0544525372a48cb7d39285974c90_JaffaCakes118.exe
1496	bbcf0544525372a48cb7d39285974c90_JaffaCakes118.exe
1496	bbcf0544525372a48cb7d39285974c90_JaffaCakes118.exe
1496	bbcf0544525372a48cb7d39285974c90_JaffaCakes118.exe
1496	bbcf0544525372a48cb7d39285974c90_JaffaCakes118.exe
1496	bbcf0544525372a48cb7d39285974c90_JaffaCakes118.exe
1496	bbcf0544525372a48cb7d39285974c90_JaffaCakes118.exe
1496	bbcf0544525372a48cb7d39285974c90_JaffaCakes118.exe
1496	bbcf0544525372a48cb7d39285974c90_JaffaCakes118.exe
2340	TSTheme.exe
2340	TSTheme.exe
2340	TSTheme.exe
2340	TSTheme.exe
2340	TSTheme.exe
2340	TSTheme.exe
2340	TSTheme.exe
2340	TSTheme.exe
2340	TSTheme.exe
2340	TSTheme.exe
2340	TSTheme.exe
2340	TSTheme.exe
2340	TSTheme.exe
2340	TSTheme.exe
2340	TSTheme.exe
2340	TSTheme.exe
2340	TSTheme.exe
2340	TSTheme.exe
2340	TSTheme.exe
2340	TSTheme.exe
2340	TSTheme.exe
2340	TSTheme.exe
2340	TSTheme.exe
2340	TSTheme.exe
2340	TSTheme.exe
2340	TSTheme.exe
2340	TSTheme.exe
2340	TSTheme.exe
2340	TSTheme.exe
2340	TSTheme.exe
2340	TSTheme.exe
2340	TSTheme.exe
2340	TSTheme.exe
2340	TSTheme.exe
2340	TSTheme.exe
2340	TSTheme.exe
2340	TSTheme.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 1496 wrote to memory of 2340	1496	bbcf0544525372a48cb7d39285974c90_JaffaCakes118.exe	30
PID 1496 wrote to memory of 2340	1496	bbcf0544525372a48cb7d39285974c90_JaffaCakes118.exe	30
PID 1496 wrote to memory of 2340	1496	bbcf0544525372a48cb7d39285974c90_JaffaCakes118.exe	30
PID 1496 wrote to memory of 2340	1496	bbcf0544525372a48cb7d39285974c90_JaffaCakes118.exe	30
PID 1496 wrote to memory of 2340	1496	bbcf0544525372a48cb7d39285974c90_JaffaCakes118.exe	30
PID 1496 wrote to memory of 2340	1496	bbcf0544525372a48cb7d39285974c90_JaffaCakes118.exe	30
PID 1496 wrote to memory of 2340	1496	bbcf0544525372a48cb7d39285974c90_JaffaCakes118.exe	30
PID 2340 wrote to memory of 2708	2340	TSTheme.exe	31
PID 2340 wrote to memory of 2708	2340	TSTheme.exe	31
PID 2340 wrote to memory of 2708	2340	TSTheme.exe	31
PID 2340 wrote to memory of 2708	2340	TSTheme.exe	31
PID 2340 wrote to memory of 3040	2340	TSTheme.exe	32
PID 2340 wrote to memory of 3040	2340	TSTheme.exe	32
PID 2340 wrote to memory of 3040	2340	TSTheme.exe	32
PID 2340 wrote to memory of 3040	2340	TSTheme.exe	32
PID 2340 wrote to memory of 3040	2340	TSTheme.exe	32
PID 2340 wrote to memory of 3040	2340	TSTheme.exe	32
PID 2340 wrote to memory of 3040	2340	TSTheme.exe	32
PID 2340 wrote to memory of 3040	2340	TSTheme.exe	32
PID 2340 wrote to memory of 3040	2340	TSTheme.exe	32

C:\Users\Admin\AppData\Local\Temp\bbcf0544525372a48cb7d39285974c90_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\bbcf0544525372a48cb7d39285974c90_JaffaCakes118.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1496
- C:\Windows\SysWOW64\TSTheme.exe
  C:\Windows\system32\TSTheme.exe
  2⤵
  - Modifies WinLogon for persistence
  - Deletes itself
  - Writes to the Master Boot Record (MBR)
  - System Location Discovery: System Language Discovery
  - Modifies Internet Explorer Protected Mode
  - Modifies Internet Explorer Protected Mode Banner
  - Modifies Internet Explorer settings
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:2340
- - C:\Windows\SysWOW64\svchost.exe
    svchost.exe
    3⤵
    PID:2708
- - C:\Windows\SysWOW64\svchost.exe
    svchost.exe
    3⤵
    - System Location Discovery: System Language Discovery
    PID:3040

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Winlogon Helper DLL

T1547.004

Pre-OS Boot

T1542

Bootkit

T1542.003

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Winlogon Helper DLL

T1547.004

Defense Evasion

Modify Registry

T1112

Pre-OS Boot

T1542

Bootkit

T1542.003

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1496-5-0x0000000000220000-0x000000000022B000-memory.dmp

Filesize
44KB

Download
memory/1496-0-0x0000000000220000-0x000000000022B000-memory.dmp

Filesize
44KB

Download
memory/2340-8-0x0000000077260000-0x0000000077370000-memory.dmp

Filesize
1.1MB

Download
memory/2340-3-0x0000000000130000-0x000000000013B000-memory.dmp

Filesize
44KB

Download
memory/2340-6-0x0000000000130000-0x000000000013B000-memory.dmp

Filesize
44KB

Download
memory/2340-7-0x0000000077271000-0x0000000077272000-memory.dmp

Filesize
4KB

Download
memory/2340-4-0x0000000000130000-0x000000000013B000-memory.dmp

Filesize
44KB

Download
memory/2340-9-0x0000000000130000-0x000000000013B000-memory.dmp

Filesize
44KB

Download
memory/2340-13-0x0000000000130000-0x000000000013B000-memory.dmp

Filesize
44KB

Download
memory/2340-25-0x0000000000130000-0x000000000013B000-memory.dmp

Filesize
44KB

Download
memory/3040-21-0x0000000000020000-0x000000000002B000-memory.dmp

Filesize
44KB

Download
memory/3040-22-0x0000000077260000-0x0000000077370000-memory.dmp

Filesize
1.1MB

Download
memory/3040-24-0x0000000000170000-0x000000000017B000-memory.dmp

Filesize
44KB

Download
memory/3040-26-0x0000000077260000-0x0000000077370000-memory.dmp

Filesize
1.1MB

Download