461b50051439aafded874b3c252e2d2ca78b3ff4f27413e39ceca3f2d070d6cd

Analysis

max time kernel
139s
max time network
143s
platform
windows10-2004_x64
resource
win10v2004-20231127-en
resource tags

arch:x64arch:x86image:win10v2004-20231127-enlocale:en-usos:windows10-2004-x64system
submitted
29/11/2023, 09:56

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General

Target
2911202301.jar
Size 125KB
Sample231129-lybnssfe4y
SHA256 461b50051439aafded874b3c252e2d2ca78b3ff4f27413e39ceca3f2d070d6cd
MD5 61821f7547b53052a6691102d30edb39
SHA1 29fb5b476a7212892d8546715e6d706b89f4ca07
SHA512 e4d236e5713017f56cfd6746599479cee9d747b1e8a78dc8cee627d32e330197e641787df93f1221ddb52b4749a42dd9a744f1cf533a79e752ce6f4bda6e4483
SSDEEP 3072:l/BUDrxslF1DI2uEWIjrVrL1seAfLrNNB4:2xslFSJNInN1PL
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
448	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	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\symbols\dll\jvm.pdb	java.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\server\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\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\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

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 1292 wrote to memory of 448	1292	java.exe	88
PID 1292 wrote to memory of 448	1292	java.exe	88

C:\Program Files (x86)\Common Files\Oracle\Java\javapath\java.exe
java -jar C:\Users\Admin\AppData\Local\Temp\2911202301.jar
1⤵
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:1292
- 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:448

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

memory/1292-2-0x000001EAE4450000-0x000001EAE5450000-memory.dmp

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memory/1292-11-0x000001EAE4430000-0x000001EAE4431000-memory.dmp

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memory/1292-16-0x000001EAE4430000-0x000001EAE4431000-memory.dmp

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memory/1292-19-0x000001EAE46D0000-0x000001EAE46E0000-memory.dmp

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memory/1292-20-0x000001EAE46E0000-0x000001EAE46F0000-memory.dmp

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memory/1292-21-0x000001EAE4450000-0x000001EAE5450000-memory.dmp

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memory/1292-22-0x000001EAE4450000-0x000001EAE5450000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads