4e0ddcd303f27c01dcc8a35a9bd821c53fb7dcca474ac7f0c84d3c6451e9f778

Analysis

max time kernel
1521s
max time network
1512s
platform
windows11-21h2_x64
resource
win11-20240412-en
resource tags

arch:x64arch:x86image:win11-20240412-enlocale:en-usos:windows11-21h2-x64system
submitted
14/04/2024, 10:31

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General

Target
Java Install.jar
Size 92KB
Sample240414-mkd3fafh76
SHA256 16ed7004aa68efab0eda75b3f9bff11508365a4224ef859c91f93029bc441284
MD5 c55f9247eb8ea19af96292f0893f86b5
SHA1 bd5e6884b8151114af7e45a92525893f4d2aaabd
SHA512 3efab4ee9e3c9d81efd4e2f164c0a2ae72f688cbd0068cc44a063bf4787ba65b8d2a644ac2f7704fbd059d0ba96665aeff46c2bfba820fb42df06eea7e87ccdb
SSDEEP 1536:QL/61A/qP1+9Qc1+jxjciQnGSzPsRBo0fpL9mjMT8mMhe3gnHGvPvxKpjHr9Uy:QLn/qP1CQpjEGyP0Bxf99mYTX3gmvKLn
MD5 SHA1 SHA512 SSDEEP

Score

7^/10

discovery

Malware Config

Signatures

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
3320	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\symbols\dll\ntdll.pdb	java.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\dll\ntdll.pdb	java.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\symbols\dll\ntdll.pdb	java.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\server\dll\jvm.pdb	java.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\server\symbols\dll\jvm.pdb	java.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\jvm.pdb	java.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\symbols\dll\jvm.pdb	java.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\ntdll.pdb	java.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\server\jvm.pdb	java.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\dll\jvm.pdb	java.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\server\ntdll.pdb	java.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\server\dll\ntdll.pdb	java.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 3316 wrote to memory of 3320	3316	java.exe	82
PID 3316 wrote to memory of 3320	3316	java.exe	82

C:\Program Files (x86)\Common Files\Oracle\Java\javapath\java.exe
java -jar "C:\Users\Admin\AppData\Local\Temp\Java Install.jar"
1⤵
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:3316
- C:\Windows\system32\icacls.exe
  C:\Windows\system32\icacls.exe C:\ProgramData\Oracle\Java\.oracle_jre_usage /grant "everyone":(OI)(CI)M
  2⤵
  - Modifies file permissions
  PID:3320

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

3903daac9bc4a3b7.timestamp

Path C:\ProgramData\Oracle\Java\.oracle_jre_usage\3903daac9bc4a3b7.timestamp
Size 46B
SHA256 1049b06394f06516671254f15f307e63949fdd0f6bb2dc985b537da92d3d3934
MD5 e6fd46db8769abe0acbb6738a2cead15
SHA1 480d08f6360e471b1681de6ea64a96a2b99b4090
SHA512 0bb9995cc6273fec37da3c05a4326a72c0cc9976f08c6c106001c9ec8910dd66bb01b360cb4450e883ed8f039495a040b90ca76dc20114d9a1f49cafe1e3bc12
MD5 SHA1 SHA512

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memory/3316-4-0x000001F5435D0000-0x000001F5445D0000-memory.dmp

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memory/3316-12-0x000001F5435B0000-0x000001F5435B1000-memory.dmp

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memory/3316-17-0x000001F543850000-0x000001F543860000-memory.dmp

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memory/3316-18-0x000001F5435D0000-0x000001F5445D0000-memory.dmp

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memory/3316-19-0x000001F5435D0000-0x000001F5445D0000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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