908164fc41810a1629789ed6834454b1f379f87e7c96b268824148c72b484a7a

Analysis

max time kernel
137s
max time network
105s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
18/08/2024, 11:31

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General

Target

Yulgang.exe
Size

1.9MB
MD5

3a42ea5dc5b14b1fc92b99dd877d24ce
SHA1

bd43271ca1e8d7c3b1b5b266c1b33c2246413ef6
SHA256

908164fc41810a1629789ed6834454b1f379f87e7c96b268824148c72b484a7a
SHA512

082c02d43fc8b3a9bdf152511a3948e4d0523b31b6b0ee5f14d6c54db5762fa1dc6b98003cb732606a2e319310dee91bf3aaf7859412aaa582687234e27ecac7
SSDEEP

24576:aRYpEa9Xwn5cT0/ibuZGijFLLFuSSs0lC:SYpE4XI/1Zn1LOs0lC

Score

1^/10

Malware Config

Signatures

Checks processor information in registry 2 TTPs 3 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	dw20.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	dw20.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	dw20.exe

Enumerates system info in registry 2 TTPs 2 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	dw20.exe
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	dw20.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeBackupPrivilege	3824	dw20.exe
Token: SeBackupPrivilege	3824	dw20.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1376	Yulgang.exe
1376	Yulgang.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 1376 wrote to memory of 3824	1376	Yulgang.exe	85
PID 1376 wrote to memory of 3824	1376	Yulgang.exe	85

C:\Users\Admin\AppData\Local\Temp\Yulgang.exe
"C:\Users\Admin\AppData\Local\Temp\Yulgang.exe"
1⤵
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1376
- C:\Windows\Microsoft.NET\Framework64\v2.0.50727\dw20.exe
  dw20.exe -x -s 1216
  2⤵
  - Checks processor information in registry
  - Enumerates system info in registry
  - Suspicious use of AdjustPrivilegeToken
  PID:3824

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1376-0-0x00007FFDC4065000-0x00007FFDC4066000-memory.dmp

Filesize
4KB

Download
memory/1376-2-0x000000001C750000-0x000000001CC1E000-memory.dmp

Filesize
4.8MB

Download
memory/1376-1-0x00007FFDC3DB0000-0x00007FFDC4751000-memory.dmp

Filesize
9.6MB

Download
memory/1376-3-0x000000001CC20000-0x000000001CCBC000-memory.dmp

Filesize
624KB

Download
memory/1376-4-0x00007FFDC3DB0000-0x00007FFDC4751000-memory.dmp

Filesize
9.6MB

Download
memory/1376-5-0x0000000001980000-0x0000000001988000-memory.dmp

Filesize
32KB

Download
memory/1376-6-0x00007FFDC3DB0000-0x00007FFDC4751000-memory.dmp

Filesize
9.6MB

Download
memory/1376-7-0x00007FFDC3DB0000-0x00007FFDC4751000-memory.dmp

Filesize
9.6MB

Download
memory/1376-8-0x00007FFDC3DB0000-0x00007FFDC4751000-memory.dmp

Filesize
9.6MB

Download
memory/1376-15-0x00007FFDC3DB0000-0x00007FFDC4751000-memory.dmp

Filesize
9.6MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads