ca438598c383fab834c5e52369032e30c657f8f70cbb095f181ea7779d34bba1

Analysis

max time kernel
146s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
28-03-2024 07:36

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General

Target

Telexcopy.pdf.jar
Size

395KB
MD5

81e621517a407ae36da0a767b960c88c
SHA1

421f3489d10b803e2dd64d0b47ce619da2da448a
SHA256

ca438598c383fab834c5e52369032e30c657f8f70cbb095f181ea7779d34bba1
SHA512

cd0510723447c5ace63f4ec9eb1aa0aa7d9d56b70f08b16c92c71b9825351122e59c1b5173e1e7288f59a8d732be122e90be397521f80e71328d743ad172788c
SSDEEP

192:WtZ3hAJtjmbwOqaI55LEOkOYiDiMkCjvDhvLlSIz3v4M3LwsUE+1MB7hikCOrPiH:cZ3hOOJvsEOWGWCjvSmwM7wsTvQMC

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

4616 icacls.exe

pid	process
4616	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\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
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\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
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

Suspicious use of WriteProcessMemory 2 IoCs

Processes:

java.exe

description pid process target process

PID 5088 wrote to memory of 4616 5088 java.exe icacls.exe
PID 5088 wrote to memory of 4616 5088 java.exe icacls.exe

description	pid	process	target process
PID 5088 wrote to memory of 4616	5088	java.exe	icacls.exe
PID 5088 wrote to memory of 4616	5088	java.exe	icacls.exe

C:\Program Files (x86)\Common Files\Oracle\Java\javapath\java.exe
java -jar C:\Users\Admin\AppData\Local\Temp\Telexcopy.pdf.jar
1⤵
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:5088

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:4616

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
317ab3eb3cf2506a1060cc00f9330f70

SHA1
606fbe0e5b080005fd59fa2ea6e4c49c04280e34

SHA256
9a1a529781ae9821497e2caae2bb027b1c3cd89ef9768d8b6b52a4f0609728ea

SHA512
f8cdb259a4aac0139f5c298462ed521cfc0bdc275566ce7adddbbe002d6a06f004eb5d1a31e7d9459bd2dfb1512d2ca12c5a27850f1fdf3d19b64f956eaa1917

Download Submit
memory/5088-56-0x000001299A880000-0x000001299A890000-memory.dmp

Filesize
64KB

Download
memory/5088-64-0x000001299A8F0000-0x000001299A900000-memory.dmp

Filesize
64KB

Download
memory/5088-55-0x000001299A7E0000-0x000001299A7F0000-memory.dmp

Filesize
64KB

Download
memory/5088-30-0x000001299A550000-0x000001299B550000-memory.dmp

Filesize
16.0MB

Download
memory/5088-37-0x000001299A550000-0x000001299B550000-memory.dmp

Filesize
16.0MB

Download
memory/5088-45-0x000001299A550000-0x000001299B550000-memory.dmp

Filesize
16.0MB

Download
memory/5088-50-0x000001299A530000-0x000001299A531000-memory.dmp

Filesize
4KB

Download
memory/5088-53-0x000001299A550000-0x000001299B550000-memory.dmp

Filesize
16.0MB

Download
memory/5088-21-0x000001299A550000-0x000001299B550000-memory.dmp

Filesize
16.0MB

Download
memory/5088-12-0x000001299A530000-0x000001299A531000-memory.dmp

Filesize
4KB

Download
memory/5088-58-0x000001299A8A0000-0x000001299A8B0000-memory.dmp

Filesize
64KB

Download
memory/5088-57-0x000001299A550000-0x000001299B550000-memory.dmp

Filesize
16.0MB

Download
memory/5088-60-0x000001299A910000-0x000001299A920000-memory.dmp

Filesize
64KB

Download
memory/5088-59-0x000001299A8C0000-0x000001299A8D0000-memory.dmp

Filesize
64KB

Download
memory/5088-61-0x000001299A8B0000-0x000001299A8C0000-memory.dmp

Filesize
64KB

Download
memory/5088-62-0x000001299A8D0000-0x000001299A8E0000-memory.dmp

Filesize
64KB

Download
memory/5088-63-0x000001299A8E0000-0x000001299A8F0000-memory.dmp

Filesize
64KB

Download
memory/5088-65-0x000001299A900000-0x000001299A910000-memory.dmp

Filesize
64KB

Download
memory/5088-4-0x000001299A550000-0x000001299B550000-memory.dmp

Filesize
16.0MB

Download