84948705fee010eaefb23ccd65be44459c8fe843409b12b50fcc297f790d8896

Analysis

max time kernel
140s
max time network
126s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
19/08/2024, 02:41

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

a942373b18545ac3bcf86e774d38a6b5_JaffaCakes118.dll
Size

137KB
MD5

a942373b18545ac3bcf86e774d38a6b5
SHA1

6bd5d473b8b5f62a5f51cc2fe123be0f6a4497e3
SHA256

84948705fee010eaefb23ccd65be44459c8fe843409b12b50fcc297f790d8896
SHA512

bb9e01103fbcf3f31c40f29670ba22c4fd73708daeb0acee89203addb017ac8600eb0f78a419d9724e8bac0b15999850ea8abdd4a119a3b13d6e13f92d31a9e1
SSDEEP

3072:ITodYQXEDhWnp2g2hmPhZXc4Je/mZctxu/8ZyYEH:IEdOlWnpM4PhZXERxE8Zy

Score

6^/10

discovery persistence

Malware Config

Signatures

Modifies WinLogon 2 TTPs 3 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\BITS	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\BITS	rundll32.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\Sys.dll	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\Sys.dll	rundll32.exe

Drops file in Windows directory 8 IoCs

description	ioc	Process
File created	C:\Windows\240670328.dat	rundll32.exe
File created	C:\Windows\240670375.dat	rundll32.exe
File created	C:\Windows\240670031.dat	rundll32.exe
File created	C:\Windows\240670078.dat	rundll32.exe
File created	C:\Windows\240670109.dat	rundll32.exe
File created	C:\Windows\240670171.dat	rundll32.exe
File created	C:\Windows\240670234.dat	rundll32.exe
File created	C:\Windows\240670281.dat	rundll32.exe

System Location Discovery: System Language Discovery 1 TTPs 1 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	rundll32.exe

Suspicious use of AdjustPrivilegeToken 18 IoCs

description	pid	Process
Token: SeRestorePrivilege	4284	rundll32.exe
Token: SeBackupPrivilege	4284	rundll32.exe
Token: SeRestorePrivilege	4284	rundll32.exe
Token: SeBackupPrivilege	4284	rundll32.exe
Token: SeRestorePrivilege	4284	rundll32.exe
Token: SeBackupPrivilege	4284	rundll32.exe
Token: SeRestorePrivilege	4284	rundll32.exe
Token: SeBackupPrivilege	4284	rundll32.exe
Token: SeRestorePrivilege	4284	rundll32.exe
Token: SeBackupPrivilege	4284	rundll32.exe
Token: SeRestorePrivilege	4284	rundll32.exe
Token: SeBackupPrivilege	4284	rundll32.exe
Token: SeRestorePrivilege	4284	rundll32.exe
Token: SeBackupPrivilege	4284	rundll32.exe
Token: SeRestorePrivilege	4284	rundll32.exe
Token: SeBackupPrivilege	4284	rundll32.exe
Token: SeRestorePrivilege	4284	rundll32.exe
Token: SeBackupPrivilege	4284	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4988 wrote to memory of 4284	4988	rundll32.exe	91
PID 4988 wrote to memory of 4284	4988	rundll32.exe	91
PID 4988 wrote to memory of 4284	4988	rundll32.exe	91

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\a942373b18545ac3bcf86e774d38a6b5_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4988
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\a942373b18545ac3bcf86e774d38a6b5_JaffaCakes118.dll,#1
  2⤵
  - Modifies WinLogon
  - Drops file in System32 directory
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:4284

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k 240670171 -s BITS
1⤵
PID:3620

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=4112,i,9445584274764997943,12714240264001792460,262144 --variations-seed-version --mojo-platform-channel-handle=3976 /prefetch:8
1⤵
PID:4456

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Winlogon Helper DLL

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Winlogon Helper DLL

T1547.004

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Windows 7 deprecation

Loading Replay Monitor...

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads