862eeaafea7f68224158b85c0a09c325e39527082742a7d7a65c0a40c8c9d60e

Analysis

max time kernel
144s
max time network
133s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
30-12-2023 08:46

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General

Target

13b1e246f237bbf22c1e22fa909f027b.exe
Size

75KB
MD5

13b1e246f237bbf22c1e22fa909f027b
SHA1

19fae1ad3a088ab3386d8a4f99a4a6289d786ef6
SHA256

862eeaafea7f68224158b85c0a09c325e39527082742a7d7a65c0a40c8c9d60e
SHA512

54e44a067f81baaf47dd7b766f1ecadfaa4062b77d58ba9c4554db2c74a9d2cd2a9a4067c59d44b286b11646fa412d9df5d531bd89e8adf9442f1024fa42038d
SSDEEP

1536:4fqyQdgrT3DPQtwEC9xPqvgdakq44kMtUVB1FIxp:Gky3Dt+gdakqXkMaVpIxp

Score

8^/10

Malware Config

Signatures

Drops file in Drivers directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\drivers\Beep.sys	13b1e246f237bbf22c1e22fa909f027b.exe
File opened for modification	C:\Windows\SysWOW64\drivers\Beep.sys	13b1e246f237bbf22c1e22fa909f027b.exe

Executes dropped EXE 1 IoCs

pid	Process
3340	MyNule.exe

Enumerates connected drives 3 TTPs 2 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	\??\E:	13b1e246f237bbf22c1e22fa909f027b.exe
File opened (read-only)	\??\H:	13b1e246f237bbf22c1e22fa909f027b.exe

Drops file in System32 directory 4 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\MyNule.exe	Process not Found
File opened for modification	C:\Windows\SysWOW64\MyNule.exe	Process not Found
File opened for modification	C:\Windows\SysWOW64\MyNule.exe	MyNule.exe
File opened for modification	C:\Windows\SysWOW64\MyNule.exe	13b1e246f237bbf22c1e22fa909f027b.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4064	13b1e246f237bbf22c1e22fa909f027b.exe
4064	13b1e246f237bbf22c1e22fa909f027b.exe
3340	MyNule.exe
3340	MyNule.exe

Suspicious behavior: LoadsDriver 2 IoCs

pid	Process
660	Process not Found
660	Process not Found

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 4064 wrote to memory of 3340	4064	Process not Found	30
PID 4064 wrote to memory of 3340	4064	Process not Found	30
PID 4064 wrote to memory of 3340	4064	Process not Found	30
PID 3340 wrote to memory of 4016	3340	MyNule.exe	29
PID 3340 wrote to memory of 4016	3340	MyNule.exe	29
PID 3340 wrote to memory of 4016	3340	MyNule.exe	29
PID 4064 wrote to memory of 1784	4064	Process not Found	28
PID 4064 wrote to memory of 1784	4064	Process not Found	28
PID 4064 wrote to memory of 1784	4064	Process not Found	28

C:\Users\Admin\AppData\Local\Temp\13b1e246f237bbf22c1e22fa909f027b.exe
"C:\Users\Admin\AppData\Local\Temp\13b1e246f237bbf22c1e22fa909f027b.exe"
1⤵
- Drops file in Drivers directory
- Enumerates connected drives
- Drops file in System32 directory
- Suspicious behavior: EnumeratesProcesses
PID:4064
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\~SiGou.bat
  2⤵
  PID:1784
- C:\Windows\SysWOW64\MyNule.exe
  C:\Windows\system32\MyNule.exe MyNule
  2⤵
  - Executes dropped EXE
  - Drops file in System32 directory
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:3340

C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\~SiGou.bat
1⤵
PID:4016

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/3340-11-0x0000000000400000-0x0000000000419000-memory.dmp

Filesize
100KB

Download
memory/4064-15-0x0000000000400000-0x0000000000419000-memory.dmp

Filesize
100KB

Download