6c974aa57734ff98a88b403058ebbc281a7deb311886c4e1697e59a192afc542

General

Target

SKlauncher-3.1.2.5.exe
Size

1.6MB
MD5

a3eaae6bb7e01e8059f1276ccb7f6c62
SHA1

801b7bb06be83f057fcf7d84c119e0ccb6310386
SHA256

6c974aa57734ff98a88b403058ebbc281a7deb311886c4e1697e59a192afc542
SHA512

57a21164ca396e36c55d39e553647567399fb9e10b7f08d93c691df714aea1b1959b8c230761445b8e39ce81eb8c65a4d34b968d73f7e649e903d5245320d5f8
SSDEEP

49152:HIBc3nWdsIp8gClzw4Kz/q4BkkKlWThSorx:oB/Eq44TBTKEUor

Score

7^/10

discovery

Malware Config

Signatures

Loads dropped DLL 1 IoCs

pid	Process
2156	SKlauncher-3.1.2.5.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
4704	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\dll\jvm.pdb	SKlauncher-3.1.2.5.exe
File opened for modification	\??\c:\program files\java\jre-1.8\bin\server\symbols\dll\jvm.pdb	SKlauncher-3.1.2.5.exe
File opened for modification	\??\c:\program files\java\jre-1.8\bin\server\ntdll.pdb	SKlauncher-3.1.2.5.exe
File opened for modification	\??\c:\program files\java\jre-1.8\bin\server\dll\ntdll.pdb	SKlauncher-3.1.2.5.exe
File opened for modification	\??\c:\program files\java\jre-1.8\bin\dll\ntdll.pdb	SKlauncher-3.1.2.5.exe
File opened for modification	\??\c:\program files\java\jre-1.8\bin\symbols\dll\ntdll.pdb	SKlauncher-3.1.2.5.exe
File opened for modification	\??\c:\program files\java\jre-1.8\bin\server\jvm.pdb	SKlauncher-3.1.2.5.exe
File opened for modification	\??\c:\program files\java\jre-1.8\bin\dll\jvm.pdb	SKlauncher-3.1.2.5.exe
File opened for modification	\??\c:\program files\java\jre-1.8\bin\symbols\dll\jvm.pdb	SKlauncher-3.1.2.5.exe
File opened for modification	\??\c:\program files\java\jre-1.8\bin\server\symbols\dll\ntdll.pdb	SKlauncher-3.1.2.5.exe
File opened for modification	\??\c:\program files\java\jre-1.8\bin\ntdll.pdb	SKlauncher-3.1.2.5.exe
File opened for modification	\??\c:\program files\java\jre-1.8\bin\jvm.pdb	SKlauncher-3.1.2.5.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2156	SKlauncher-3.1.2.5.exe
2156	SKlauncher-3.1.2.5.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2156 wrote to memory of 3464	2156	SKlauncher-3.1.2.5.exe	86
PID 2156 wrote to memory of 3464	2156	SKlauncher-3.1.2.5.exe	86
PID 3464 wrote to memory of 4704	3464	java.exe	88
PID 3464 wrote to memory of 4704	3464	java.exe	88
PID 2156 wrote to memory of 1648	2156	SKlauncher-3.1.2.5.exe	90
PID 2156 wrote to memory of 1648	2156	SKlauncher-3.1.2.5.exe	90

C:\Users\Admin\AppData\Local\Temp\SKlauncher-3.1.2.5.exe
"C:\Users\Admin\AppData\Local\Temp\SKlauncher-3.1.2.5.exe"
1⤵
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2156
- \??\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:3464
- - 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:4704
- \??\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:1648

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

File and Directory Permissions Modification

1

T1222

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
46B

MD5
680e751dde76494912f5d50741b86ba9

SHA1
8f024fb8148a8aae3568d8ab41bb1bfd6c85d38b

SHA256
734fed358f216d20565cb0a9525b4bd766b72320af8a52856927c020034ef118

SHA512
d308c9a74c42208b55348a7a0a1be76b51101619c07e437ffa0d5bc471b08fcdc51d5fac714c484dd56f0bd23d88ca9a57240c705407dec1b748b6ed42a7a950

Download Submit
C:\Users\Admin\AppData\Local\Temp\flatlaf.temp\flatlaf-windows-x86_64-4834065927000.dll

Filesize
22KB

MD5
dcd68a87b7e6edbcfde48150403b22eb

SHA1
28e4839a29725075772fccc39b44e194eb91e477

SHA256
ae3352b6ad6cffaae55f4387f9f5e79365ea17f8d5fb45ef11d21c3300a49a4c

SHA512
ac2a6bc0afcd08c56090536a937772edd54f35505c9a5837d9bc8e91c31edb6137cf5191986b3473e9e2f512950b4dbfe4088598bfd1faf47088124c70aeba71

Download Submit
memory/1648-29-0x000001DCBBAB0000-0x000001DCBBAB1000-memory.dmp

Filesize
4KB

Download
memory/1648-19-0x000001DCBD380000-0x000001DCBE380000-memory.dmp

Filesize
16.0MB

Download
memory/2156-57-0x00000000031D0000-0x00000000041D0000-memory.dmp

Filesize
16.0MB

Download
memory/2156-81-0x00000000031D0000-0x00000000041D0000-memory.dmp

Filesize
16.0MB

Download
memory/2156-43-0x0000000002FA0000-0x0000000002FA1000-memory.dmp

Filesize
4KB

Download
memory/2156-47-0x0000000002FA0000-0x0000000002FA1000-memory.dmp

Filesize
4KB

Download
memory/2156-92-0x00000000034B0000-0x00000000034C0000-memory.dmp

Filesize
64KB

Download
memory/2156-91-0x0000000003480000-0x0000000003490000-memory.dmp

Filesize
64KB

Download
memory/2156-76-0x00000000031D0000-0x00000000041D0000-memory.dmp

Filesize
16.0MB

Download
memory/2156-77-0x0000000002FA0000-0x0000000002FA1000-memory.dmp

Filesize
4KB

Download
memory/2156-78-0x00000000031D0000-0x00000000041D0000-memory.dmp

Filesize
16.0MB

Download
memory/2156-80-0x0000000002FA0000-0x0000000002FA1000-memory.dmp

Filesize
4KB

Download
memory/2156-38-0x00000000031D0000-0x00000000041D0000-memory.dmp

Filesize
16.0MB

Download
memory/3464-8-0x000001B3D9900000-0x000001B3DA900000-memory.dmp

Filesize
16.0MB

Download
memory/3464-15-0x000001B3D8090000-0x000001B3D8091000-memory.dmp

Filesize
4KB

Download
memory/3464-93-0x000001B3D9900000-0x000001B3DA900000-memory.dmp

Filesize
16.0MB

Download

Analysis

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