b8854611b04b7ff0269ba30bc535bc4ec583e639a4385818d80ef6ae9c16fb9d

Analysis

max time kernel
144s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
04-01-2024 20:16

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General

Target

41c176289fce610d62f725d77e3a7d01.jar
Size

99KB
MD5

41c176289fce610d62f725d77e3a7d01
SHA1

1dae1e614e39617736f087af8974eaccabbec6f2
SHA256

b8854611b04b7ff0269ba30bc535bc4ec583e639a4385818d80ef6ae9c16fb9d
SHA512

6fe3dc69a6f535ab70585e3c24a96f49971cf490be03263076e566d0f3c38f1388790d8b0db02f45ba65dde36c34147722ca374c813cba9dc4d372c4c4755948
SSDEEP

1536:ayNjdW+3p0L6R62S0Wn7xwxMwM7Xpg1XEWW0o37BwAQ/LjA7d9TMMuDTMoT6N:ayK+Z0SyRnlwKRy10z7O1A7ddMMu7TS

Score

7^/10

discovery

Malware Config

Signatures

Modifies file permissions 1 TTPs 1 IoCs
discovery

File and Directory Permissions Modification
T1222

Processes:

icacls.exe

pid process

2144 icacls.exe

pid	process
2144	icacls.exe

Drops file in Program Files directory 12 IoCs

Processes:

java.exe

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\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\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\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\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\ntdll.pdb	java.exe

Suspicious use of WriteProcessMemory 2 IoCs

Processes:

java.exe

description pid process target process

PID 3404 wrote to memory of 2144 3404 java.exe icacls.exe
PID 3404 wrote to memory of 2144 3404 java.exe icacls.exe

description	pid	process	target process
PID 3404 wrote to memory of 2144	3404	java.exe	icacls.exe
PID 3404 wrote to memory of 2144	3404	java.exe	icacls.exe

C:\Program Files (x86)\Common Files\Oracle\Java\javapath\java.exe
java -jar C:\Users\Admin\AppData\Local\Temp\41c176289fce610d62f725d77e3a7d01.jar
1⤵
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:3404
- 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:2144

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

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

Filesize
46B

MD5
f563247403a4b33b1707281823235765

SHA1
b6b3b63fde9ad090fecffd5076c00d992e02468d

SHA256
1950f5d57c0b8f390174a9b0dc79aacfdaf0f1487289b787f2c7eef42558f9aa

SHA512
6624239f7910eb931cbc9baac9d33c8a4d96ea96c55d1ee111e1e49d3d4d662b1e15f008180c65378a9b789c56a839ffbeb6f82aa49c62d0ccee6bbaf51fbb45

Download Submit
memory/3404-46-0x0000013FD2D40000-0x0000013FD2D50000-memory.dmp

Filesize
64KB

Download
memory/3404-29-0x0000013FD2A60000-0x0000013FD3A60000-memory.dmp

Filesize
16.0MB

Download
memory/3404-47-0x0000013FD2D70000-0x0000013FD2D80000-memory.dmp

Filesize
64KB

Download
memory/3404-45-0x0000013FD2D30000-0x0000013FD2D40000-memory.dmp

Filesize
64KB

Download
memory/3404-48-0x0000013FD2D80000-0x0000013FD2D90000-memory.dmp

Filesize
64KB

Download
memory/3404-35-0x0000013FD1170000-0x0000013FD1171000-memory.dmp

Filesize
4KB

Download
memory/3404-42-0x0000013FD2A60000-0x0000013FD3A60000-memory.dmp

Filesize
16.0MB

Download
memory/3404-41-0x0000013FD2D50000-0x0000013FD2D60000-memory.dmp

Filesize
64KB

Download
memory/3404-40-0x0000013FD2CE0000-0x0000013FD2CF0000-memory.dmp

Filesize
64KB

Download
memory/3404-4-0x0000013FD2A60000-0x0000013FD3A60000-memory.dmp

Filesize
16.0MB

Download
memory/3404-18-0x0000013FD2A60000-0x0000013FD3A60000-memory.dmp

Filesize
16.0MB

Download
memory/3404-16-0x0000013FD1170000-0x0000013FD1171000-memory.dmp

Filesize
4KB

Download
memory/3404-28-0x0000013FD1170000-0x0000013FD1171000-memory.dmp

Filesize
4KB

Download
memory/3404-50-0x0000013FD2A60000-0x0000013FD3A60000-memory.dmp

Filesize
16.0MB

Download
memory/3404-51-0x0000013FD2DA0000-0x0000013FD2DB0000-memory.dmp

Filesize
64KB

Download
memory/3404-53-0x0000013FD2A60000-0x0000013FD3A60000-memory.dmp

Filesize
16.0MB

Download
memory/3404-52-0x0000013FD2DC0000-0x0000013FD2DD0000-memory.dmp

Filesize
64KB

Download
memory/3404-49-0x0000013FD2D90000-0x0000013FD2DA0000-memory.dmp

Filesize
64KB

Download
memory/3404-44-0x0000013FD2D20000-0x0000013FD2D30000-memory.dmp

Filesize
64KB

Download
memory/3404-43-0x0000013FD2D10000-0x0000013FD2D20000-memory.dmp

Filesize
64KB

Download
memory/3404-54-0x0000013FD2A60000-0x0000013FD3A60000-memory.dmp

Filesize
16.0MB

Download