289298b863b0b084fb052febba511d51f90a8bee26f77ad9b4bda167439d3481

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
23/08/2024, 00:07

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General

Target

b998b900b1c2173aa76aaa0cd9b86eb8_JaffaCakes118.exe
Size

888KB
MD5

b998b900b1c2173aa76aaa0cd9b86eb8
SHA1

84e93d51418ac6b4a8de5b3318cf79cccf36a2ac
SHA256

289298b863b0b084fb052febba511d51f90a8bee26f77ad9b4bda167439d3481
SHA512

684bc05a6e889d1bde6dc0d91bdf1f2c9190a5fe3a6b092d1bb467d00990e996ff8e2638142c42206229a6973898590a99ca068ca197993b181bcc43c1d07781
SSDEEP

24576:9keY0APntQT822IQ/TFkwDhdhuB1Ix0LkA:xY0Alpfjtd8hh

Score

7^/10

discovery persistence privilege_escalation

Malware Config

Signatures

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-786284298-625481688-3210388970-1000\Control Panel\International\Geo\Nation	b998b900b1c2173aa76aaa0cd9b86eb8_JaffaCakes118.exe

Executes dropped EXE 1 IoCs

pid	Process
4576	csrss.exe

Adds Run key to start application 2 TTPs 1 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\internet = "C:\\Windows\\system\\csrss.exe"	csrss.exe

Drops file in System32 directory 6 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\AUTOEXEC.BAT	b998b900b1c2173aa76aaa0cd9b86eb8_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\BOOTEX.LOG	cmd.exe
File created	C:\Windows\SysWOW64\PhotoScreensaver.scr	b998b900b1c2173aa76aaa0cd9b86eb8_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\scrnsave.scr	b998b900b1c2173aa76aaa0cd9b86eb8_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\AUTOEXEC.BAT	csrss.exe
File opened for modification	C:\Windows\SysWOW64\BOOTEX.LOG	cmd.exe

Drops file in Windows directory 5 IoCs

description	ioc	Process
File created	C:\Windows\system\csrss.exe	b998b900b1c2173aa76aaa0cd9b86eb8_JaffaCakes118.exe
File opened for modification	C:\Windows\system\csrss.exe	b998b900b1c2173aa76aaa0cd9b86eb8_JaffaCakes118.exe
File created	C:\Windows\IsUninst.exe	b998b900b1c2173aa76aaa0cd9b86eb8_JaffaCakes118.exe
File created	C:\Windows\IsUn0804.exe	b998b900b1c2173aa76aaa0cd9b86eb8_JaffaCakes118.exe
File created	C:\Windows\IsUn0404.exe	b998b900b1c2173aa76aaa0cd9b86eb8_JaffaCakes118.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Event Triggered Execution: Screensaver 1 TTPs 3 IoCs

Screensavers are programs that execute after a configurable time of user inactivity and consist of Portable Executable (PE) files with a .scr file extension.

persistence privilege_escalation

Screensaver

T1546.002

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-786284298-625481688-3210388970-1000\Control Panel\Desktop\ScreenSaveActive = "1"	b998b900b1c2173aa76aaa0cd9b86eb8_JaffaCakes118.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-786284298-625481688-3210388970-1000\Control Panel\Desktop\ScreenSaverIsSecure = "0"	b998b900b1c2173aa76aaa0cd9b86eb8_JaffaCakes118.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-786284298-625481688-3210388970-1000\Control Panel\Desktop\SCRNSAVE.EXE = "C:\\Windows\\system32\\scrnsave.scr"	b998b900b1c2173aa76aaa0cd9b86eb8_JaffaCakes118.exe

System Location Discovery: System Language Discovery 1 TTPs 8 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	csrss.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	net.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	net1.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b998b900b1c2173aa76aaa0cd9b86eb8_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	net.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	net1.exe

Modifies Control Panel 5 IoCs

evasion

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-786284298-625481688-3210388970-1000\Control Panel\Desktop\SCRNSAVE.EXE = "C:\\Windows\\system32\\scrnsave.scr"	b998b900b1c2173aa76aaa0cd9b86eb8_JaffaCakes118.exe
Key created	\REGISTRY\USER\S-1-5-21-786284298-625481688-3210388970-1000\Control Panel\Desktop	b998b900b1c2173aa76aaa0cd9b86eb8_JaffaCakes118.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-786284298-625481688-3210388970-1000\Control Panel\Desktop\ScreenSaveActive = "1"	b998b900b1c2173aa76aaa0cd9b86eb8_JaffaCakes118.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-786284298-625481688-3210388970-1000\Control Panel\Desktop\ScreenSaverIsSecure = "0"	b998b900b1c2173aa76aaa0cd9b86eb8_JaffaCakes118.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-786284298-625481688-3210388970-1000\Control Panel\Desktop\ScreenSaveTimeOut = "60"	b998b900b1c2173aa76aaa0cd9b86eb8_JaffaCakes118.exe

Modifies registry class 2 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command	csrss.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "\"C:\\Windows\\system\\csrss.exe\" \"%1\""	csrss.exe

Runs net.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
4576	csrss.exe
4576	csrss.exe
4576	csrss.exe
4576	csrss.exe
4576	csrss.exe
4576	csrss.exe
4576	csrss.exe
4576	csrss.exe
4576	csrss.exe
4576	csrss.exe
4576	csrss.exe
4576	csrss.exe
4576	csrss.exe
4576	csrss.exe
4576	csrss.exe
4576	csrss.exe
4576	csrss.exe
4576	csrss.exe
4576	csrss.exe
4576	csrss.exe
4576	csrss.exe
4576	csrss.exe
4576	csrss.exe
4576	csrss.exe
4576	csrss.exe
4576	csrss.exe
4576	csrss.exe
4576	csrss.exe
4576	csrss.exe
4576	csrss.exe
4576	csrss.exe
4576	csrss.exe
4576	csrss.exe
4576	csrss.exe
4576	csrss.exe
4576	csrss.exe
4576	csrss.exe
4576	csrss.exe
4576	csrss.exe
4576	csrss.exe
4576	csrss.exe
4576	csrss.exe
4576	csrss.exe
4576	csrss.exe
4576	csrss.exe
4576	csrss.exe
4576	csrss.exe
4576	csrss.exe
4576	csrss.exe
4576	csrss.exe
4576	csrss.exe
4576	csrss.exe
4576	csrss.exe
4576	csrss.exe
4576	csrss.exe
4576	csrss.exe
4576	csrss.exe
4576	csrss.exe
4576	csrss.exe
4576	csrss.exe
4576	csrss.exe
4576	csrss.exe
4576	csrss.exe
4576	csrss.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
4576	csrss.exe

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
2868	b998b900b1c2173aa76aaa0cd9b86eb8_JaffaCakes118.exe
4576	csrss.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 2868 wrote to memory of 1140	2868	b998b900b1c2173aa76aaa0cd9b86eb8_JaffaCakes118.exe	87
PID 2868 wrote to memory of 1140	2868	b998b900b1c2173aa76aaa0cd9b86eb8_JaffaCakes118.exe	87
PID 2868 wrote to memory of 1140	2868	b998b900b1c2173aa76aaa0cd9b86eb8_JaffaCakes118.exe	87
PID 1140 wrote to memory of 3884	1140	cmd.exe	89
PID 1140 wrote to memory of 3884	1140	cmd.exe	89
PID 1140 wrote to memory of 3884	1140	cmd.exe	89
PID 3884 wrote to memory of 1956	3884	net.exe	90
PID 3884 wrote to memory of 1956	3884	net.exe	90
PID 3884 wrote to memory of 1956	3884	net.exe	90
PID 2868 wrote to memory of 4576	2868	b998b900b1c2173aa76aaa0cd9b86eb8_JaffaCakes118.exe	91
PID 2868 wrote to memory of 4576	2868	b998b900b1c2173aa76aaa0cd9b86eb8_JaffaCakes118.exe	91
PID 2868 wrote to memory of 4576	2868	b998b900b1c2173aa76aaa0cd9b86eb8_JaffaCakes118.exe	91
PID 4576 wrote to memory of 3496	4576	csrss.exe	92
PID 4576 wrote to memory of 3496	4576	csrss.exe	92
PID 4576 wrote to memory of 3496	4576	csrss.exe	92
PID 3496 wrote to memory of 4656	3496	cmd.exe	94
PID 3496 wrote to memory of 4656	3496	cmd.exe	94
PID 3496 wrote to memory of 4656	3496	cmd.exe	94
PID 4656 wrote to memory of 3980	4656	net.exe	95
PID 4656 wrote to memory of 3980	4656	net.exe	95
PID 4656 wrote to memory of 3980	4656	net.exe	95

C:\Users\Admin\AppData\Local\Temp\b998b900b1c2173aa76aaa0cd9b86eb8_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\b998b900b1c2173aa76aaa0cd9b86eb8_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Drops file in System32 directory
- Drops file in Windows directory
- Event Triggered Execution: Screensaver
- System Location Discovery: System Language Discovery
- Modifies Control Panel
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:2868
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c C:\Windows\system32\AUTOEXEC.BAT
  2⤵
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1140
- - C:\Windows\SysWOW64\net.exe
    net stop "Internet Connection Firewall (ICF) / Internet Connection Sharing (ICS)"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:3884
  - - C:\Windows\SysWOW64\net1.exe
      C:\Windows\system32\net1 stop "Internet Connection Firewall (ICF) / Internet Connection Sharing (ICS)"
      4⤵
      System Location Discovery: System Language Discovery
      PID:1956
- C:\Windows\system\csrss.exe
  "C:\Windows\system\csrss.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of WriteProcessMemory
  PID:4576
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c C:\Windows\system32\AUTOEXEC.BAT
    3⤵
    - Drops file in System32 directory
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:3496
  - - C:\Windows\SysWOW64\net.exe
      net stop "Internet Connection Firewall (ICF) / Internet Connection Sharing (ICS)"
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious use of WriteProcessMemory
      PID:4656
    - - C:\Windows\SysWOW64\net1.exe
        
        C:\Windows\system32\net1 stop "Internet Connection Firewall (ICF) / Internet Connection Sharing (ICS)"
        5⤵
        System Location Discovery: System Language Discovery
        
        PID:3980

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

Event Triggered Execution

T1546

Screensaver

T1546.002

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Event Triggered Execution

T1546

Screensaver

T1546.002

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\SysWOW64\AUTOEXEC.BAT

Filesize
116B

MD5
9fd3649356093534f7a96b3718acb902

SHA1
3ca28c0856733ee0af90bb127e6d0dcae0c35628

SHA256
f0c01d1c7edb96dd6c818b44fafa7b62267e1a53934c820536e1d14b4910a9ee

SHA512
df64a056268467ec9c81c3556168ea92c0952f22cb2a203de62f2cba91f58d663f17c455fb7a5a2d32495ba5000008019b182f620f511b361c8c354538cb437b

Download Submit
C:\Windows\System\csrss.exe

Filesize
888KB

MD5
b998b900b1c2173aa76aaa0cd9b86eb8

SHA1
84e93d51418ac6b4a8de5b3318cf79cccf36a2ac

SHA256
289298b863b0b084fb052febba511d51f90a8bee26f77ad9b4bda167439d3481

SHA512
684bc05a6e889d1bde6dc0d91bdf1f2c9190a5fe3a6b092d1bb467d00990e996ff8e2638142c42206229a6973898590a99ca068ca197993b181bcc43c1d07781

Download Submit
memory/2868-0-0x0000000002290000-0x0000000002291000-memory.dmp

Filesize
4KB

Download
memory/2868-15-0x0000000000400000-0x00000000004E9000-memory.dmp

Filesize
932KB

Download
memory/4576-25-0x0000000000400000-0x00000000004E9000-memory.dmp

Filesize
932KB

Download
memory/4576-26-0x0000000000400000-0x00000000004E9000-memory.dmp

Filesize
932KB

Download
memory/4576-21-0x00000000023B0000-0x00000000023B1000-memory.dmp

Filesize
4KB

Download
memory/4576-22-0x0000000000400000-0x00000000004E9000-memory.dmp

Filesize
932KB

Download
memory/4576-23-0x0000000000400000-0x00000000004E9000-memory.dmp

Filesize
932KB

Download
memory/4576-24-0x0000000000400000-0x00000000004E9000-memory.dmp

Filesize
932KB

Download
memory/4576-16-0x00000000023B0000-0x00000000023B1000-memory.dmp

Filesize
4KB

Download
memory/4576-20-0x0000000000400000-0x00000000004E9000-memory.dmp

Filesize
932KB

Download
memory/4576-27-0x0000000000400000-0x00000000004E9000-memory.dmp

Filesize
932KB

Download
memory/4576-28-0x0000000000400000-0x00000000004E9000-memory.dmp

Filesize
932KB

Download
memory/4576-29-0x0000000000400000-0x00000000004E9000-memory.dmp

Filesize
932KB

Download
memory/4576-30-0x0000000000400000-0x00000000004E9000-memory.dmp

Filesize
932KB

Download
memory/4576-31-0x0000000000400000-0x00000000004E9000-memory.dmp

Filesize
932KB

Download
memory/4576-32-0x0000000000400000-0x00000000004E9000-memory.dmp

Filesize
932KB

Download
memory/4576-33-0x0000000000400000-0x00000000004E9000-memory.dmp

Filesize
932KB

Download
memory/4576-34-0x0000000000400000-0x00000000004E9000-memory.dmp

Filesize
932KB

Download