05ae2f0dd61ef10019b94c200e8df192b767bb4cc24a7e7b329ab43cc9c74caf

Analysis

max time kernel
139s
max time network
144s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
03/02/2024, 18:16

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General

Target

SKlauncher-3.2.exe
Size

1.6MB
MD5

b63468dd118dfbca5ef7967ba344e0e3
SHA1

2ba4f0df5f3bd284bf2a89aba320e4440d8b8355
SHA256

05ae2f0dd61ef10019b94c200e8df192b767bb4cc24a7e7b329ab43cc9c74caf
SHA512

007ecb7445dc0c01a802b5a2c91313aae59f9dc96e27455dd85e7a92a4e649d683fbc2ada5f48925d9ab3b4fdaea20aa89eeb442fde079902aecb5ca3454a548
SSDEEP

49152:HIBc3n9dRvwVlzhFAQ/ggUTPQjYEiim7V:oBaO/FAqMQjYEXm

Score

7^/10

discovery

Malware Config

Signatures

Loads dropped DLL 1 IoCs

pid	Process
4040	SKlauncher-3.2.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
2644	icacls.exe

Drops file in Program Files directory 12 IoCs

description	ioc	Process
File opened for modification	\??\c:\program files\java\jre-1.8\bin\server\jvm.pdb	SKlauncher-3.2.exe
File opened for modification	\??\c:\program files\java\jre-1.8\bin\symbols\dll\jvm.pdb	SKlauncher-3.2.exe
File opened for modification	\??\c:\program files\java\jre-1.8\bin\server\ntdll.pdb	SKlauncher-3.2.exe
File opened for modification	\??\c:\program files\java\jre-1.8\bin\dll\ntdll.pdb	SKlauncher-3.2.exe
File opened for modification	\??\c:\program files\java\jre-1.8\bin\symbols\dll\ntdll.pdb	SKlauncher-3.2.exe
File opened for modification	\??\c:\program files\java\jre-1.8\bin\ntdll.pdb	SKlauncher-3.2.exe
File opened for modification	\??\c:\program files\java\jre-1.8\bin\server\dll\jvm.pdb	SKlauncher-3.2.exe
File opened for modification	\??\c:\program files\java\jre-1.8\bin\server\symbols\dll\jvm.pdb	SKlauncher-3.2.exe
File opened for modification	\??\c:\program files\java\jre-1.8\bin\jvm.pdb	SKlauncher-3.2.exe
File opened for modification	\??\c:\program files\java\jre-1.8\bin\dll\jvm.pdb	SKlauncher-3.2.exe
File opened for modification	\??\c:\program files\java\jre-1.8\bin\server\dll\ntdll.pdb	SKlauncher-3.2.exe
File opened for modification	\??\c:\program files\java\jre-1.8\bin\server\symbols\dll\ntdll.pdb	SKlauncher-3.2.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4040	SKlauncher-3.2.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4040 wrote to memory of 376	4040	SKlauncher-3.2.exe	84
PID 4040 wrote to memory of 376	4040	SKlauncher-3.2.exe	84
PID 376 wrote to memory of 2644	376	java.exe	86
PID 376 wrote to memory of 2644	376	java.exe	86
PID 4040 wrote to memory of 1720	4040	SKlauncher-3.2.exe	88
PID 4040 wrote to memory of 1720	4040	SKlauncher-3.2.exe	88

C:\Users\Admin\AppData\Local\Temp\SKlauncher-3.2.exe
"C:\Users\Admin\AppData\Local\Temp\SKlauncher-3.2.exe"
1⤵
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4040
- \??\c:\PROGRA~1\java\jre-1.8\bin\java.exe
  "c:\PROGRA~1\java\jre-1.8\bin\java.exe" -version
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:376
- - C:\Windows\system32\icacls.exe
    C:\Windows\system32\icacls.exe C:\ProgramData\Oracle\Java\.oracle_jre_usage /grant "everyone":(OI)(CI)M
    3⤵
    - Modifies file permissions
    PID:2644
- \??\c:\PROGRA~1\java\jdk-1.8\jre\bin\java.exe
  "c:\PROGRA~1\java\jdk-1.8\jre\bin\java.exe" -version
  2⤵
  PID:1720

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

File and Directory Permissions Modification

T1222

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\ProgramData\Oracle\Java\.oracle_jre_usage\3903daac9bc4a3b7.timestamp

Filesize
46B

MD5
4fc7cfc1840db8730b76f723fa8c626f

SHA1
8c8aa58a27cfac7bc6f124117a3f0888c07ad867

SHA256
a8ebc9373b36c509a2c15f307a4a3f8e07cc5e93a733965dcc744986e60cc532

SHA512
67a410f0605be38a2fe8fbd9f1ccfec44df2bfb1ce680939f01a665e8420eaa72c940ba4452120677d5f78cf853c619472596bf34676882473b4b4328d77ec49

Download Submit
C:\Users\Admin\AppData\Local\Temp\flatlaf.temp\flatlaf-windows-x86_64-5242605314000.dll

Filesize
22KB

MD5
dcd68a87b7e6edbcfde48150403b22eb

SHA1
28e4839a29725075772fccc39b44e194eb91e477

SHA256
ae3352b6ad6cffaae55f4387f9f5e79365ea17f8d5fb45ef11d21c3300a49a4c

SHA512
ac2a6bc0afcd08c56090536a937772edd54f35505c9a5837d9bc8e91c31edb6137cf5191986b3473e9e2f512950b4dbfe4088598bfd1faf47088124c70aeba71

Download Submit
memory/376-5-0x00000221CC2A0000-0x00000221CD2A0000-memory.dmp

Filesize
16.0MB

Download
memory/376-15-0x00000221CC280000-0x00000221CC281000-memory.dmp

Filesize
4KB

Download
memory/376-58-0x00000221CC2A0000-0x00000221CD2A0000-memory.dmp

Filesize
16.0MB

Download
memory/1720-18-0x000001926ECA0000-0x000001926FCA0000-memory.dmp

Filesize
16.0MB

Download
memory/1720-28-0x000001926D460000-0x000001926D461000-memory.dmp

Filesize
4KB

Download
memory/4040-33-0x0000000002CD0000-0x0000000003CD0000-memory.dmp

Filesize
16.0MB

Download
memory/4040-43-0x00000000029C0000-0x00000000029C1000-memory.dmp

Filesize
4KB

Download
memory/4040-47-0x00000000029C0000-0x00000000029C1000-memory.dmp

Filesize
4KB

Download