de1522a546abbff8b5cdde813b89e754ab0da6894e25bba0243a7a79e26a99d5

Analysis

max time kernel
142s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
01/02/2024, 03:54

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General

Target
SB COPY6827366180.PDF.jar
Size 40KB
Sample240201-ef9dsaafh3
SHA256 243a5315c031347617620bb5c8b694b3308932530519abc04e00c7c4fd7f7c62
MD5 0ec695117cb3bf0f1a8cef9a77f7675a
SHA1 e1152ed31dad5535bbeb5b63d61491d5fadd4787
SHA512 b9b27c10a0363fc38a219e8c9b795e284003e94b5851c30e30907b766bba88aa2e81701edd222461a5379a4daca0f094527f2fdca3da132aafede02d27bc8bf7
SSDEEP 768:qzXFN70ZIv326vOAZT1S0dNMAkuyC9iS7hKouufPN7c:qzXj7eYNJkchvN4
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
4708	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\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\symbols\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
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\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\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

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 4524 wrote to memory of 4708	4524	java.exe	85
PID 4524 wrote to memory of 4708	4524	java.exe	85

C:\Program Files (x86)\Common Files\Oracle\Java\javapath\java.exe
java -jar "C:\Users\Admin\AppData\Local\Temp\SB COPY6827366180.PDF.jar"
1⤵
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:4524
- 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:4708

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 4dd693c18de1403464952b369098b7c052ab2412338184b89fb27f08d96ea59e
MD5 31db826bd42448097dd8d06dbf74a60d
SHA1 c4e4ff8e4732bb86e6452be553cd34b3ccae18ea
SHA512 f7605bb8fc7828d520ff7d175dbc670b6352696d53beb06f2057e9813eaff56bdd69fd8fd09dee6d6ccdb5c7b99d025b03bad3245543700fc9f1e8d513e8e31d
MD5 SHA1 SHA512

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memory/4524-4-0x000001B5AD160000-0x000001B5AE160000-memory.dmp

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