fb0e207a197c528ecffb57fc9f88b0ede2aca81ecc0b3991692e69c045b87ab6

Analysis

max time kernel
146s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
04-04-2024 19:48

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

Bookshelf.jar
Size

260KB
MD5

85a44d3299449545e435f5ec55fc914b
SHA1

83a1864dd78f48102609849dd36866d6cf32b907
SHA256

043afbddfd567e753a893f5a8f0e052db7c45209a08d09d9dcf32cadca764109
SHA512

a3217d1072d98c9c3ff2d9190a7c37cc81aad390179ac72abea7edea3485c6f2851a6cc5f94f07c229d5ac1fd78db58f558b45a299ceaae11ccdfd1aa351fcd7
SSDEEP

6144:qdPoV4xmKkoFx/KIy7dw5k2N6PaJUZFDMCyhfMDtIc:AI4xmGtKIGKlJgNdtD

Score

7^/10

discovery

Malware Config

Signatures

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
3324	icacls.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 3812 wrote to memory of 3324	3812	java.exe	87
PID 3812 wrote to memory of 3324	3812	java.exe	87

C:\Program Files (x86)\Common Files\Oracle\Java\javapath\java.exe
java -jar C:\Users\Admin\AppData\Local\Temp\Bookshelf.jar
1⤵
- Suspicious use of WriteProcessMemory
PID:3812
- 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:3324

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

Loading Replay Monitor...

Downloads

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

Filesize
46B

MD5
54e077ab20dfb614bea21219972b791b

SHA1
848b9c9a87b088ed2105b6de33dae179b3cbfabd

SHA256
9fa1e464cde7066e6e4f99b7d16b9824a85904d0c0aa02fb50698e652d0f917e

SHA512
8f95e233d89a0f1eb226ac635f16ea071bf9ca1c9dd8aba5ffdd7940fabfafb12262442d7376465e6dde00bcafd75eb38373f28b83ac3ec89427034b9899a216

Download Submit
memory/3812-4-0x000001C76CC90000-0x000001C76DC90000-memory.dmp

Filesize
16.0MB

Download
memory/3812-11-0x000001C76CC70000-0x000001C76CC71000-memory.dmp

Filesize
4KB

Download