001b11a9ed658c8504c01726f9b5df3b04caf2ee095396de2e79712674e6dfe0

Analysis

max time kernel
143s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
12-04-2024 15:18

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General

Target

Attachment.jar
Size

64KB
MD5

77b5bec60e8ccde749c522ca55b62f4a
SHA1

399089c4510de6e905190593426436c243f3e692
SHA256

001b11a9ed658c8504c01726f9b5df3b04caf2ee095396de2e79712674e6dfe0
SHA512

980841d212cb12409b7d59a5b7926918d7cf664ecc2a3808a35ceca5b4048ffbb807eb815d0a2035d39ce3043fcccbedd4473ec2d837f666a9a49222289c7e89
SSDEEP

1536:EOVCTmOXlFWlOI7xaiv9WCCC6/YC9icqKBMeGCMQOulVOBXTB2yWv7lv:E2qpVFWx7EiYXeevMQOulVYTB2yWv79

Score

7^/10

discovery

Malware Config

Signatures

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
576	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\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\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\symbols\dll\ntdll.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
File opened for modification	C:\Program Files\Java\jre-1.8\bin\server\symbols\dll\ntdll.pdb	java.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 5104 wrote to memory of 576	5104	java.exe	91
PID 5104 wrote to memory of 576	5104	java.exe	91

C:\Program Files (x86)\Common Files\Oracle\Java\javapath\java.exe
java -jar C:\Users\Admin\AppData\Local\Temp\Attachment.jar
1⤵
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:5104
- 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:576

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=3708 --field-trial-handle=1928,i,13242902252791919845,10377620236057253993,262144 --variations-seed-version /prefetch:8
1⤵
PID:1768

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
64fb710850a4bc0f925bcc15e1a8ab0e

SHA1
536b57cfef26d0d97b4d636f3abdd9de5e93e6ac

SHA256
686862349292dc8795a1f9bdf751f5a2988ba9908e8bbe3c00f467f565f85327

SHA512
5f2ba3700bd38e9c34a771b39ea6e92ae934867ac1e69f5659d4ada540d706792cbee13b3c226ba13afbfeb27f2dab4648e5d3c07f59df9311d5e37b97e993ec

Download Submit
memory/5104-2-0x000002C05ADF0000-0x000002C05BDF0000-memory.dmp

Filesize
16.0MB

Download
memory/5104-12-0x000002C059540000-0x000002C059541000-memory.dmp

Filesize
4KB

Download
memory/5104-20-0x000002C05ADF0000-0x000002C05BDF0000-memory.dmp

Filesize
16.0MB

Download
memory/5104-22-0x000002C05B070000-0x000002C05B080000-memory.dmp

Filesize
64KB

Download
memory/5104-23-0x000002C05B080000-0x000002C05B090000-memory.dmp

Filesize
64KB

Download
memory/5104-24-0x000002C05ADF0000-0x000002C05BDF0000-memory.dmp

Filesize
16.0MB

Download
memory/5104-25-0x000002C05ADF0000-0x000002C05BDF0000-memory.dmp

Filesize
16.0MB

Download