b0243b6fdfc0c1ad296299bc4424a13cc2c7c9808bf331c07041261d06c9b712

General

Target

b0243b6fdfc0c1ad296299bc4424a13cc2c7c9808bf331c07041261d06c9b712.exe
Size

269KB
MD5

ff3be7a2ec1d2452f08de1feec2deb2f
SHA1

b842e504a0e84e44ae7b876f3543cf6f2dcae6a9
SHA256

b0243b6fdfc0c1ad296299bc4424a13cc2c7c9808bf331c07041261d06c9b712
SHA512

14469a2bd770cb38f29c8db885ce4ddc10b32cbf64fb62787570cd1347d22d6c0bfb589f3524948ab50c556783970666331ce722a72770c8a7b5225cb7117db8
SSDEEP

6144:YltHeS9enNwHqOu5Dx7tZrRbl+pXOV7yKM+mvSFz9jEhHMIVq1rl:AtHeNn2KOiJZrRJ+0V72+19jqsIVq1B

Score

10^/10

persistence

Malware Config

Signatures

Modifies WinLogon for persistence 2 TTPs 2 IoCs

persistence

Winlogon Helper DLL

T1004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Userinit = "userinit.exe,\"C:\\Windows\\system32\\clientsvr.exe\""	server.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\shell = "explorer.exe,\"C:\\ProgramData\\635701\\server.exe\""	server.exe

Executes dropped EXE 3 IoCs

pid	Process
984	D0fMEQKUz0.exe
4872	tmpE182.tmp.exe
4092	server.exe

Checks computer location settings 2 TTPs 3 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation	D0fMEQKUz0.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation	tmpE182.tmp.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation	b0243b6fdfc0c1ad296299bc4424a13cc2c7c9808bf331c07041261d06c9b712.exe

Drops startup file 1 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\D0fMEQKUz0.url	b0243b6fdfc0c1ad296299bc4424a13cc2c7c9808bf331c07041261d06c9b712.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\microsoft update = "\"C:\\ProgramData\\635701\\server.exe\""	server.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\clientsvr.exe	server.exe
File opened for modification	C:\Windows\SysWOW64\clientsvr.exe	server.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Runs ping.exe 1 TTPs 2 IoCs

Remote System Discovery

T1018

pid	Process
4308	PING.EXE
644	PING.EXE

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
4092	server.exe
4092	server.exe
4092	server.exe
4092	server.exe
4092	server.exe
4092	server.exe
4092	server.exe
4092	server.exe
4092	server.exe
4092	server.exe
4092	server.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	4900	b0243b6fdfc0c1ad296299bc4424a13cc2c7c9808bf331c07041261d06c9b712.exe
Token: SeDebugPrivilege	984	D0fMEQKUz0.exe
Token: SeDebugPrivilege	4092	server.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4092	server.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 4900 wrote to memory of 4020	4900	b0243b6fdfc0c1ad296299bc4424a13cc2c7c9808bf331c07041261d06c9b712.exe	86
PID 4900 wrote to memory of 4020	4900	b0243b6fdfc0c1ad296299bc4424a13cc2c7c9808bf331c07041261d06c9b712.exe	86
PID 4900 wrote to memory of 4020	4900	b0243b6fdfc0c1ad296299bc4424a13cc2c7c9808bf331c07041261d06c9b712.exe	86
PID 4020 wrote to memory of 4308	4020	cmd.exe	88
PID 4020 wrote to memory of 4308	4020	cmd.exe	88
PID 4020 wrote to memory of 4308	4020	cmd.exe	88
PID 4900 wrote to memory of 984	4900	b0243b6fdfc0c1ad296299bc4424a13cc2c7c9808bf331c07041261d06c9b712.exe	93
PID 4900 wrote to memory of 984	4900	b0243b6fdfc0c1ad296299bc4424a13cc2c7c9808bf331c07041261d06c9b712.exe	93
PID 4900 wrote to memory of 984	4900	b0243b6fdfc0c1ad296299bc4424a13cc2c7c9808bf331c07041261d06c9b712.exe	93
PID 984 wrote to memory of 4828	984	D0fMEQKUz0.exe	95
PID 984 wrote to memory of 4828	984	D0fMEQKUz0.exe	95
PID 984 wrote to memory of 4828	984	D0fMEQKUz0.exe	95
PID 4828 wrote to memory of 644	4828	cmd.exe	96
PID 4828 wrote to memory of 644	4828	cmd.exe	96
PID 4828 wrote to memory of 644	4828	cmd.exe	96
PID 984 wrote to memory of 4872	984	D0fMEQKUz0.exe	97
PID 984 wrote to memory of 4872	984	D0fMEQKUz0.exe	97
PID 984 wrote to memory of 4872	984	D0fMEQKUz0.exe	97
PID 4872 wrote to memory of 4092	4872	tmpE182.tmp.exe	98
PID 4872 wrote to memory of 4092	4872	tmpE182.tmp.exe	98
PID 4872 wrote to memory of 4092	4872	tmpE182.tmp.exe	98

C:\Users\Admin\AppData\Local\Temp\b0243b6fdfc0c1ad296299bc4424a13cc2c7c9808bf331c07041261d06c9b712.exe
"C:\Users\Admin\AppData\Local\Temp\b0243b6fdfc0c1ad296299bc4424a13cc2c7c9808bf331c07041261d06c9b712.exe"
1⤵
- Checks computer location settings
- Drops startup file
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4900
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c PING 8.8.8.8 -n 10 > nul
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4020
- - C:\Windows\SysWOW64\PING.EXE
    PING 8.8.8.8 -n 10
    3⤵
    - Runs ping.exe
    PID:4308
- C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\D0fMEQKUz0.exe
  "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\D0fMEQKUz0.exe"
  2⤵
  - Executes dropped EXE
  - Checks computer location settings
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:984
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /c PING 8.8.8.8 -n 10 > nul
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:4828
  - - C:\Windows\SysWOW64\PING.EXE
      PING 8.8.8.8 -n 10
      4⤵
      Runs ping.exe
      PID:644
- - C:\Users\Admin\AppData\Local\Temp\tmpE182.tmp.exe
    "C:\Users\Admin\AppData\Local\Temp\tmpE182.tmp.exe"
    3⤵
    - Executes dropped EXE
    - Checks computer location settings
    - Suspicious use of WriteProcessMemory
    PID:4872
  - - C:\ProgramData\635701\server.exe
      "C:\ProgramData\635701\server.exe"
      4⤵
      Modifies WinLogon for persistence
      Executes dropped EXE
      Adds Run key to start application
      Drops file in System32 directory
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of SetWindowsHookEx
      PID:4092

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

Winlogon Helper DLL

Privilege Escalation

Defense Evasion

Modify Registry

2

T1112

Credential Access

Discovery

Query Registry

1

T1012

Remote System Discovery

1

T1018

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\ProgramData\635701\server.exe

Filesize
222KB

MD5
a40fe2a8fd22909db1e64d47820f7e7a

SHA1
319648067cd94d2144209afc54e1f941fffa66d1

SHA256
29fe5df448b8b33fdf3c210e21a2ba8bcba016023b8c0c3f49e531430edf17bc

SHA512
520450105f630f9b78fbb319720a430efc95b569e0eef598fc5ab718a90093adadf13b6badc7c0a68f108a2861581b44b3c29e76355e7bea017b20272aa269e7

Download Submit
C:\ProgramData\635701\server.exe

Filesize
222KB

MD5
a40fe2a8fd22909db1e64d47820f7e7a

SHA1
319648067cd94d2144209afc54e1f941fffa66d1

SHA256
29fe5df448b8b33fdf3c210e21a2ba8bcba016023b8c0c3f49e531430edf17bc

SHA512
520450105f630f9b78fbb319720a430efc95b569e0eef598fc5ab718a90093adadf13b6badc7c0a68f108a2861581b44b3c29e76355e7bea017b20272aa269e7

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpE182.tmp.exe

Filesize
222KB

MD5
a40fe2a8fd22909db1e64d47820f7e7a

SHA1
319648067cd94d2144209afc54e1f941fffa66d1

SHA256
29fe5df448b8b33fdf3c210e21a2ba8bcba016023b8c0c3f49e531430edf17bc

SHA512
520450105f630f9b78fbb319720a430efc95b569e0eef598fc5ab718a90093adadf13b6badc7c0a68f108a2861581b44b3c29e76355e7bea017b20272aa269e7

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpE182.tmp.exe

Filesize
222KB

MD5
a40fe2a8fd22909db1e64d47820f7e7a

SHA1
319648067cd94d2144209afc54e1f941fffa66d1

SHA256
29fe5df448b8b33fdf3c210e21a2ba8bcba016023b8c0c3f49e531430edf17bc

SHA512
520450105f630f9b78fbb319720a430efc95b569e0eef598fc5ab718a90093adadf13b6badc7c0a68f108a2861581b44b3c29e76355e7bea017b20272aa269e7

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\D0fMEQKUz0.exe

Filesize
269KB

MD5
ff3be7a2ec1d2452f08de1feec2deb2f

SHA1
b842e504a0e84e44ae7b876f3543cf6f2dcae6a9

SHA256
b0243b6fdfc0c1ad296299bc4424a13cc2c7c9808bf331c07041261d06c9b712

SHA512
14469a2bd770cb38f29c8db885ce4ddc10b32cbf64fb62787570cd1347d22d6c0bfb589f3524948ab50c556783970666331ce722a72770c8a7b5225cb7117db8

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\D0fMEQKUz0.exe

Filesize
269KB

MD5
ff3be7a2ec1d2452f08de1feec2deb2f

SHA1
b842e504a0e84e44ae7b876f3543cf6f2dcae6a9

SHA256
b0243b6fdfc0c1ad296299bc4424a13cc2c7c9808bf331c07041261d06c9b712

SHA512
14469a2bd770cb38f29c8db885ce4ddc10b32cbf64fb62787570cd1347d22d6c0bfb589f3524948ab50c556783970666331ce722a72770c8a7b5225cb7117db8

Download Submit
memory/984-147-0x0000000074880000-0x0000000074E31000-memory.dmp

Filesize
5.7MB

Download
memory/984-140-0x0000000074880000-0x0000000074E31000-memory.dmp

Filesize
5.7MB

Download
memory/984-143-0x0000000074880000-0x0000000074E31000-memory.dmp

Filesize
5.7MB

Download
memory/4092-152-0x0000000074880000-0x0000000074E31000-memory.dmp

Filesize
5.7MB

Download
memory/4092-154-0x0000000074880000-0x0000000074E31000-memory.dmp

Filesize
5.7MB

Download
memory/4872-148-0x0000000074880000-0x0000000074E31000-memory.dmp

Filesize
5.7MB

Download
memory/4872-153-0x0000000074880000-0x0000000074E31000-memory.dmp

Filesize
5.7MB

Download
memory/4900-139-0x0000000074880000-0x0000000074E31000-memory.dmp

Filesize
5.7MB

Download
memory/4900-132-0x0000000074880000-0x0000000074E31000-memory.dmp

Filesize
5.7MB

Download
memory/4900-133-0x0000000074880000-0x0000000074E31000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads