d0c7d45da838c5c08119c59036ccce877fd7d2fc1c91e0d54268bedc5efc4120

Analysis

max time kernel
96s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
27-12-2023 00:22

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General

Target

SKM_C258201001130020005057.jar
Size

107KB
MD5

bf9f710ba1787558944c14a51c3caab8
SHA1

8ae1f0e795b1aadc692964ac6ee27127fb7d6644
SHA256

d12c23844f090115e9ab57ad9d53fefe49dbbe05a1766551d6b0dd916451965e
SHA512

6b9d951521628e0fa58158e29d9dbeb511c053824575815c943d06f5d98375b7333be4f4cedcd4d864714735a8f9633bd960a58c0f177d7391de272e6a61ccf5
SSDEEP

1536:JbnFYRwaRs91zJuDt6IulM3p6crzdUKW3CwxC5MQAssDgRmAWYGfq6gbyoLGgFo:kG91zaL3Usxe3S5AssDYvGi6g2hD

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

4168 icacls.exe

pid	process
4168	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\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\symbols\dll\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\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\dll\jvm.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\symbols\dll\jvm.pdb	java.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\server\dll\ntdll.pdb	java.exe

Suspicious use of WriteProcessMemory 2 IoCs

Processes:

java.exe

description pid process target process

PID 3124 wrote to memory of 4168 3124 java.exe icacls.exe
PID 3124 wrote to memory of 4168 3124 java.exe icacls.exe

description	pid	process	target process
PID 3124 wrote to memory of 4168	3124	java.exe	icacls.exe
PID 3124 wrote to memory of 4168	3124	java.exe	icacls.exe

C:\Program Files (x86)\Common Files\Oracle\Java\javapath\java.exe
java -jar C:\Users\Admin\AppData\Local\Temp\SKM_C258201001130020005057.jar
1⤵
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:3124
- 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:4168

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
0a954757cd311ea4d371b46ddb73b25c

SHA1
9f429042fded2f4979eb44593cc9aa88717e8972

SHA256
13f8be16b55a7ab27f911a6a85fa7f42a0bace6039a609909dbc78f7addfe58c

SHA512
44b7cbbdab36fe178c03016885befb8d904af0d9a47ef4a6d80d232cd5e734d5cddace16e5750c3de4e3068d0b55c3a3cebd8de12d0fc4fcbd4734fc64a76706

Download Submit
memory/3124-39-0x0000013E22A40000-0x0000013E22A50000-memory.dmp

Filesize
64KB

Download
memory/3124-18-0x0000013E22780000-0x0000013E22781000-memory.dmp

Filesize
4KB

Download
memory/3124-43-0x0000013E22A80000-0x0000013E22A90000-memory.dmp

Filesize
64KB

Download
memory/3124-44-0x0000013E22A90000-0x0000013E22AA0000-memory.dmp

Filesize
64KB

Download
memory/3124-32-0x0000013E227A0000-0x0000013E237A0000-memory.dmp

Filesize
16.0MB

Download
memory/3124-37-0x0000013E22A30000-0x0000013E22A40000-memory.dmp

Filesize
64KB

Download
memory/3124-38-0x0000013E22AA0000-0x0000013E22AB0000-memory.dmp

Filesize
64KB

Download
memory/3124-4-0x0000013E227A0000-0x0000013E237A0000-memory.dmp

Filesize
16.0MB

Download
memory/3124-49-0x0000013E227A0000-0x0000013E237A0000-memory.dmp

Filesize
16.0MB

Download
memory/3124-17-0x0000013E227A0000-0x0000013E237A0000-memory.dmp

Filesize
16.0MB

Download
memory/3124-27-0x0000013E22780000-0x0000013E22781000-memory.dmp

Filesize
4KB

Download
memory/3124-42-0x0000013E22A70000-0x0000013E22A80000-memory.dmp

Filesize
64KB

Download
memory/3124-45-0x0000013E22AC0000-0x0000013E22AD0000-memory.dmp

Filesize
64KB

Download
memory/3124-41-0x0000013E22A60000-0x0000013E22A70000-memory.dmp

Filesize
64KB

Download
memory/3124-48-0x0000013E22AE0000-0x0000013E22AF0000-memory.dmp

Filesize
64KB

Download
memory/3124-47-0x0000013E227A0000-0x0000013E237A0000-memory.dmp

Filesize
16.0MB

Download
memory/3124-46-0x0000013E22AD0000-0x0000013E22AE0000-memory.dmp

Filesize
64KB

Download
memory/3124-40-0x0000013E22A50000-0x0000013E22A60000-memory.dmp

Filesize
64KB

Download