4e0ddcd303f27c01dcc8a35a9bd821c53fb7dcca474ac7f0c84d3c6451e9f778

Analysis

max time kernel
209s
max time network
280s
platform
windows11-21h2_x64
resource
win11-20240221-en
resource tags

arch:x64arch:x86image:win11-20240221-enlocale:en-usos:windows11-21h2-x64system
submitted
09/04/2024, 13:33

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General

Target
Java Install.jar
Size 92KB
Sample240409-qthc1abe5y
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
5008	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\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\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\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\jvm.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\server\dll\ntdll.pdb	java.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 336 wrote to memory of 5008	336	java.exe	81
PID 336 wrote to memory of 5008	336	java.exe	81

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:336
- 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:5008

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

Replay Monitor

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Downloads

3903daac9bc4a3b7.timestamp

Path C:\ProgramData\Oracle\Java\.oracle_jre_usage\3903daac9bc4a3b7.timestamp
Size 46B
SHA256 7d058dbee770d2bfee3106572951fd4dd55b5243d5b8ea7cd32cae074457b194
MD5 4c694f2abfa4b02f8c46b83bc8fe3901
SHA1 19f4e047d2edc237bcf4479041808f65c6932813
SHA512 1a0f76f4669606f14974f94315269e3c550b97963d881fc22df0936ddb39d174c45445651b5e566a3d32aab5724da341bde3f4776162fc7874bc9fd721c4327f
MD5 SHA1 SHA512