e7c65fb736f4ec9a78be81c8b7611cb548285b7021b72d9659d0708ad3ccf748

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
09/09/2024, 22:00

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General

Target

d72a277b30ef3604b4b2e78dd21512bd_JaffaCakes118.exe
Size

70KB
MD5

d72a277b30ef3604b4b2e78dd21512bd
SHA1

258c27a3aa9f631621ef82136524e2df91374c9a
SHA256

e7c65fb736f4ec9a78be81c8b7611cb548285b7021b72d9659d0708ad3ccf748
SHA512

21c6f5ec2934137a78d9aee95831c42d69b5186adaf0c9eb963597e01f27666152f470eec45e9d94d36940d2f9b0968b25edb314c0994a27641bfbbc9399f5fc
SSDEEP

1536:I+0gFMj1AaiN7OaM1C9rRtpl8XcFYINoIadoqEXrY:rNDaiN7ORC9rvwXcFH6yrY

Score

10^/10

discovery evasion persistence upx

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\Shell = "Explorer.exe C:\\Windows\\mscarrt32.exe"	mscarrt32.exe

Modifies firewall policy service 3 TTPs 2 IoCs

evasion

Modify Registry

T1112

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

description	ioc	Process
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile	mscarrt32.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\EnableFirewall = "0"	mscarrt32.exe

Disables RegEdit via registry modification 1 IoCs

evasion

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-4182098368-2521458979-3782681353-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1"	mscarrt32.exe

Disables Task Manager via registry modification
evasion

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system32\drivers\etc\hosts	mscarrt32.exe

Deletes itself 1 IoCs

pid	Process
1012	mscarrt32.exe

Executes dropped EXE 2 IoCs

pid	Process
1012	mscarrt32.exe
4724	mscarrt32.exe

UPX packed file 6 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/2232-0-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral2/files/0x00090000000234ce-4.dat	upx
behavioral2/memory/1012-6-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral2/memory/2232-7-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral2/memory/1012-11-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral2/memory/4724-12-0x0000000000400000-0x000000000042E000-memory.dmp	upx

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\mscarrt32.exe	d72a277b30ef3604b4b2e78dd21512bd_JaffaCakes118.exe
File opened for modification	C:\Windows\mscarrt32.exe	d72a277b30ef3604b4b2e78dd21512bd_JaffaCakes118.exe

System Location Discovery: System Language Discovery 1 TTPs 2 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	d72a277b30ef3604b4b2e78dd21512bd_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	mscarrt32.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
4724	mscarrt32.exe
4724	mscarrt32.exe
4724	mscarrt32.exe
4724	mscarrt32.exe
4724	mscarrt32.exe
4724	mscarrt32.exe
4724	mscarrt32.exe
4724	mscarrt32.exe
4724	mscarrt32.exe
4724	mscarrt32.exe
4724	mscarrt32.exe
4724	mscarrt32.exe
4724	mscarrt32.exe
4724	mscarrt32.exe
4724	mscarrt32.exe
4724	mscarrt32.exe
4724	mscarrt32.exe
4724	mscarrt32.exe
4724	mscarrt32.exe
4724	mscarrt32.exe
4724	mscarrt32.exe
4724	mscarrt32.exe
4724	mscarrt32.exe
4724	mscarrt32.exe
4724	mscarrt32.exe
4724	mscarrt32.exe
4724	mscarrt32.exe
4724	mscarrt32.exe
4724	mscarrt32.exe
4724	mscarrt32.exe
4724	mscarrt32.exe
4724	mscarrt32.exe
4724	mscarrt32.exe
4724	mscarrt32.exe
4724	mscarrt32.exe
4724	mscarrt32.exe
4724	mscarrt32.exe
4724	mscarrt32.exe
4724	mscarrt32.exe
4724	mscarrt32.exe
4724	mscarrt32.exe
4724	mscarrt32.exe
4724	mscarrt32.exe
4724	mscarrt32.exe
4724	mscarrt32.exe
4724	mscarrt32.exe
4724	mscarrt32.exe
4724	mscarrt32.exe
4724	mscarrt32.exe
4724	mscarrt32.exe
4724	mscarrt32.exe
4724	mscarrt32.exe
4724	mscarrt32.exe
4724	mscarrt32.exe
4724	mscarrt32.exe
4724	mscarrt32.exe
4724	mscarrt32.exe
4724	mscarrt32.exe
4724	mscarrt32.exe
4724	mscarrt32.exe
4724	mscarrt32.exe
4724	mscarrt32.exe
4724	mscarrt32.exe
4724	mscarrt32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2232 wrote to memory of 1012	2232	d72a277b30ef3604b4b2e78dd21512bd_JaffaCakes118.exe	83
PID 2232 wrote to memory of 1012	2232	d72a277b30ef3604b4b2e78dd21512bd_JaffaCakes118.exe	83
PID 2232 wrote to memory of 1012	2232	d72a277b30ef3604b4b2e78dd21512bd_JaffaCakes118.exe	83

C:\Users\Admin\AppData\Local\Temp\d72a277b30ef3604b4b2e78dd21512bd_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\d72a277b30ef3604b4b2e78dd21512bd_JaffaCakes118.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2232
- C:\Windows\mscarrt32.exe
  C:\Windows\mscarrt32.exe 472 "C:\Users\Admin\AppData\Local\Temp\d72a277b30ef3604b4b2e78dd21512bd_JaffaCakes118.exe"
  2⤵
  - Modifies WinLogon for persistence
  - Modifies firewall policy service
  - Disables RegEdit via registry modification
  - Drops file in Drivers directory
  - Deletes itself
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:1012

C:\Windows\mscarrt32.exe
C:\Windows\mscarrt32.exe
1⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
PID:4724

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Winlogon Helper DLL

T1547.004

Create or Modify System Process

T1543

Windows Service

T1543.003

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Winlogon Helper DLL

T1547.004

Create or Modify System Process

T1543

Windows Service

T1543.003

Defense Evasion

Impair Defenses

T1562

Disable or Modify System Firewall

T1562.004

Modify Registry

T1112

Credential Access

Discovery

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\mscarrt32.exe

Filesize
70KB

MD5
d72a277b30ef3604b4b2e78dd21512bd

SHA1
258c27a3aa9f631621ef82136524e2df91374c9a

SHA256
e7c65fb736f4ec9a78be81c8b7611cb548285b7021b72d9659d0708ad3ccf748

SHA512
21c6f5ec2934137a78d9aee95831c42d69b5186adaf0c9eb963597e01f27666152f470eec45e9d94d36940d2f9b0968b25edb314c0994a27641bfbbc9399f5fc

Download Submit
memory/1012-6-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/1012-11-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/2232-0-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/2232-7-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/4724-12-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download