38bc13ef112b2f17d4d1a80243fac6a521b5d58228984aae0752d79487fa3b66

Resubmissions

01/04/2025, 21:24

250401-z8184awycs 10

Analysis

max time kernel
432s
max time network
462s
platform
windows11-21h2_x64
resource
win11-20241007-en
resource tags

arch:x64arch:x86image:win11-20241007-enlocale:en-usos:windows11-21h2-x64system
submitted
04/12/2024, 11:35

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

eupdate.exe
Size

87KB
MD5

ccfaeed043685c189ef498c3c6f675e7
SHA1

6973b66e83db7f6d9ba957a6f9cca60a4983f0e8
SHA256

5d81fc6ab3e6c7bd353ee53297478fc10abfc7f851359f81a65dea74c70156ff
SHA512

ab8f2d33ec8300d87423f53243f45b720e27d59ab7839d7dcb9d37572c1f4e34536221bfda25dee939218475f44915cac2cf4e9270881af15f53d916bd9dc204
SSDEEP

1536:ZzfLlsKsEJQgrsOCvojaWr2mACx9lRMgzIY/M0t4T5y5cum:Z7wngrsOCvov2mACDP/IY00eVyc

Score

7^/10

discovery persistence upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1268	8E2F1353B56F2214332168.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3870231897-2573482396-1083937135-1000\Software\Microsoft\Windows\CurrentVersion\Run\ = "C:\\Users\\Admin\\AppData\\Roaming\\8E2F1353B56F2214332168\\8E2F1353B56F2214332168.exe"	eupdate.exe

UPX packed file 5 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral19/memory/3656-6-0x0000000000400000-0x000000000040F000-memory.dmp	upx
behavioral19/memory/3656-5-0x0000000000400000-0x000000000040F000-memory.dmp	upx
behavioral19/memory/3656-8-0x0000000000400000-0x000000000040F000-memory.dmp	upx
behavioral19/memory/3656-4-0x0000000000400000-0x000000000040F000-memory.dmp	upx
behavioral19/memory/3656-15-0x0000000000400000-0x000000000040F000-memory.dmp	upx

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	eupdate.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	eupdate.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	8E2F1353B56F2214332168.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2440	eupdate.exe
Token: SeDebugPrivilege	1268	8E2F1353B56F2214332168.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 2440 wrote to memory of 3656	2440	eupdate.exe	78
PID 2440 wrote to memory of 3656	2440	eupdate.exe	78
PID 2440 wrote to memory of 3656	2440	eupdate.exe	78
PID 2440 wrote to memory of 3656	2440	eupdate.exe	78
PID 2440 wrote to memory of 3656	2440	eupdate.exe	78
PID 2440 wrote to memory of 3656	2440	eupdate.exe	78
PID 2440 wrote to memory of 3656	2440	eupdate.exe	78
PID 3656 wrote to memory of 1268	3656	eupdate.exe	79
PID 3656 wrote to memory of 1268	3656	eupdate.exe	79
PID 3656 wrote to memory of 1268	3656	eupdate.exe	79
PID 1268 wrote to memory of 5736	1268	8E2F1353B56F2214332168.exe	80
PID 1268 wrote to memory of 5736	1268	8E2F1353B56F2214332168.exe	80
PID 1268 wrote to memory of 5736	1268	8E2F1353B56F2214332168.exe	80

C:\Users\Admin\AppData\Local\Temp\eupdate.exe
"C:\Users\Admin\AppData\Local\Temp\eupdate.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2440
- C:\Users\Admin\AppData\Local\Temp\eupdate.exe
  "eupdate.exe"
  2⤵
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3656
- - C:\Users\Admin\AppData\Roaming\8E2F1353B56F2214332168\8E2F1353B56F2214332168.exe
    "C:\Users\Admin\AppData\Roaming\8E2F1353B56F2214332168\8E2F1353B56F2214332168.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:1268
  - - C:\Users\Admin\AppData\Roaming\8E2F1353B56F2214332168\8E2F1353B56F2214332168.exe
      "8E2F1353B56F2214332168.exe"
      4⤵
      PID:5736

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Roaming\8E2F1353B56F2214332168\8E2F1353B56F2214332168.exe

Filesize
87KB

MD5
ccfaeed043685c189ef498c3c6f675e7

SHA1
6973b66e83db7f6d9ba957a6f9cca60a4983f0e8

SHA256
5d81fc6ab3e6c7bd353ee53297478fc10abfc7f851359f81a65dea74c70156ff

SHA512
ab8f2d33ec8300d87423f53243f45b720e27d59ab7839d7dcb9d37572c1f4e34536221bfda25dee939218475f44915cac2cf4e9270881af15f53d916bd9dc204

Download Submit
memory/1268-20-0x0000000075450000-0x0000000075A01000-memory.dmp

Filesize
5.7MB

Download
memory/1268-18-0x0000000075450000-0x0000000075A01000-memory.dmp

Filesize
5.7MB

Download
memory/1268-17-0x0000000075450000-0x0000000075A01000-memory.dmp

Filesize
5.7MB

Download
memory/1268-16-0x0000000075451000-0x0000000075452000-memory.dmp

Filesize
4KB

Download
memory/2440-13-0x0000000075450000-0x0000000075A01000-memory.dmp

Filesize
5.7MB

Download
memory/2440-1-0x0000000075450000-0x0000000075A01000-memory.dmp

Filesize
5.7MB

Download
memory/2440-2-0x0000000075450000-0x0000000075A01000-memory.dmp

Filesize
5.7MB

Download
memory/2440-3-0x0000000075450000-0x0000000075A01000-memory.dmp

Filesize
5.7MB

Download
memory/2440-0-0x0000000075451000-0x0000000075452000-memory.dmp

Filesize
4KB

Download
memory/3656-8-0x0000000000400000-0x000000000040F000-memory.dmp

Filesize
60KB

Download
memory/3656-15-0x0000000000400000-0x000000000040F000-memory.dmp

Filesize
60KB

Download
memory/3656-4-0x0000000000400000-0x000000000040F000-memory.dmp

Filesize
60KB

Download
memory/3656-5-0x0000000000400000-0x000000000040F000-memory.dmp

Filesize
60KB

Download
memory/3656-6-0x0000000000400000-0x000000000040F000-memory.dmp

Filesize
60KB

Download

Resubmissions

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads