d2aefc636b6db18278187345fb5bf1e898c2edae0d0edb35cb4e736ac434ad7a

Analysis

max time kernel
150s
max time network
125s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
09/05/2024, 04:24

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General

Target

d2aefc636b6db18278187345fb5bf1e898c2edae0d0edb35cb4e736ac434ad7a.exe
Size

66KB
MD5

79566a1c23d7399ce2d4cb6172a753ce
SHA1

4f007c19c14cca656c5a814a1d2c65349bc2be80
SHA256

d2aefc636b6db18278187345fb5bf1e898c2edae0d0edb35cb4e736ac434ad7a
SHA512

0765258ac8c1510722d4169251e94cc7c845c69060c9621827b76595899c9832d7840fdd7c3c4cbf95ad469733bfd904b30e82f6808bd1314283af68ff2f9071
SSDEEP

1536:EHfetdklPp+07gDSrB8Xru2zGeJxgawTzpXzrDJrXiY:IeklMMYJhqezw/pXzH9iY

Score

10^/10

evasion persistence

Malware Config

Signatures

Modifies WinLogon for persistence 2 TTPs 2 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\shell = "C:\\Windows\\explorer.exe, c:\\windows\\system\\explorer.exe"	svchost.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\shell = "C:\\Windows\\explorer.exe, c:\\windows\\system\\explorer.exe"	explorer.exe

Modifies visiblity of hidden/system files in Explorer 2 TTPs 2 IoCs

evasion

Hidden Files and Directories

T1564.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-2804150937-2146708401-419095071-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	explorer.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2804150937-2146708401-419095071-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	svchost.exe

Modifies Installed Components in the registry 2 TTPs 8 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Key deleted	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{F146C9B1-VMVQ-A9RC-NUFL-D0BA00B4E999}	svchost.exe
Key created	\REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Active Setup\Installed Components\{Y479C6D0-OTRW-U5GH-S1EE-E0AC10B4E666}	explorer.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{Y479C6D0-OTRW-U5GH-S1EE-E0AC10B4E666}\StubPath = "C:\\Users\\Admin\\AppData\\Roaming\\mrsys.exe MR"	explorer.exe
Key created	\REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Active Setup\Installed Components\{F146C9B1-VMVQ-A9RC-NUFL-D0BA00B4E999}	svchost.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{F146C9B1-VMVQ-A9RC-NUFL-D0BA00B4E999}\StubPath = "C:\\Users\\Admin\\AppData\\Roaming\\mrsys.exe MR"	svchost.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{Y479C6D0-OTRW-U5GH-S1EE-E0AC10B4E666}	svchost.exe
Key created	\REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Active Setup\Installed Components\{Y479C6D0-OTRW-U5GH-S1EE-E0AC10B4E666}	svchost.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{Y479C6D0-OTRW-U5GH-S1EE-E0AC10B4E666}\StubPath = "C:\\Users\\Admin\\AppData\\Roaming\\mrsys.exe MR"	svchost.exe

Executes dropped EXE 4 IoCs

pid	Process
4012	explorer.exe
5076	spoolsv.exe
3232	svchost.exe
2512	spoolsv.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\RunOnce\Svchost = "c:\\windows\\system\\svchost.exe RO"	svchost.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\RunOnce\Explorer = "c:\\windows\\system\\explorer.exe RO"	explorer.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\RunOnce\Svchost = "c:\\windows\\system\\svchost.exe RO"	explorer.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\RunOnce\Explorer = "c:\\windows\\system\\explorer.exe RO"	svchost.exe

Drops file in Windows directory 6 IoCs

description	ioc	Process
File opened for modification	\??\c:\windows\system\svchost.exe	svchost.exe
File opened for modification	C:\Windows\system\udsys.exe	explorer.exe
File opened for modification	\??\c:\windows\system\explorer.exe	d2aefc636b6db18278187345fb5bf1e898c2edae0d0edb35cb4e736ac434ad7a.exe
File opened for modification	\??\c:\windows\system\spoolsv.exe	explorer.exe
File opened for modification	\??\c:\windows\system\svchost.exe	spoolsv.exe
File opened for modification	\??\c:\windows\system\explorer.exe	explorer.exe

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
1300	d2aefc636b6db18278187345fb5bf1e898c2edae0d0edb35cb4e736ac434ad7a.exe
1300	d2aefc636b6db18278187345fb5bf1e898c2edae0d0edb35cb4e736ac434ad7a.exe
4012	explorer.exe
4012	explorer.exe
4012	explorer.exe
4012	explorer.exe
4012	explorer.exe
4012	explorer.exe
4012	explorer.exe
4012	explorer.exe
3232	svchost.exe
3232	svchost.exe
3232	svchost.exe
3232	svchost.exe
3232	svchost.exe
4012	explorer.exe
3232	svchost.exe
4012	explorer.exe
4012	explorer.exe
3232	svchost.exe
3232	svchost.exe
4012	explorer.exe
4012	explorer.exe
3232	svchost.exe
4012	explorer.exe
3232	svchost.exe
3232	svchost.exe
4012	explorer.exe
3232	svchost.exe
4012	explorer.exe
4012	explorer.exe
3232	svchost.exe
4012	explorer.exe
3232	svchost.exe
3232	svchost.exe
4012	explorer.exe
3232	svchost.exe
4012	explorer.exe
3232	svchost.exe
4012	explorer.exe
3232	svchost.exe
4012	explorer.exe
3232	svchost.exe
3232	svchost.exe
4012	explorer.exe
4012	explorer.exe
4012	explorer.exe
3232	svchost.exe
4012	explorer.exe
3232	svchost.exe
4012	explorer.exe
3232	svchost.exe
4012	explorer.exe
3232	svchost.exe
3232	svchost.exe
4012	explorer.exe
4012	explorer.exe
3232	svchost.exe
4012	explorer.exe
3232	svchost.exe
4012	explorer.exe
3232	svchost.exe
3232	svchost.exe
4012	explorer.exe

Suspicious behavior: GetForegroundWindowSpam 2 IoCs

pid	Process
4012	explorer.exe
3232	svchost.exe

Suspicious use of SetWindowsHookEx 12 IoCs

pid	Process
1300	d2aefc636b6db18278187345fb5bf1e898c2edae0d0edb35cb4e736ac434ad7a.exe
1300	d2aefc636b6db18278187345fb5bf1e898c2edae0d0edb35cb4e736ac434ad7a.exe
4012	explorer.exe
4012	explorer.exe
5076	spoolsv.exe
5076	spoolsv.exe
3232	svchost.exe
3232	svchost.exe
2512	spoolsv.exe
2512	spoolsv.exe
4012	explorer.exe
4012	explorer.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 1300 wrote to memory of 4012	1300	d2aefc636b6db18278187345fb5bf1e898c2edae0d0edb35cb4e736ac434ad7a.exe	79
PID 1300 wrote to memory of 4012	1300	d2aefc636b6db18278187345fb5bf1e898c2edae0d0edb35cb4e736ac434ad7a.exe	79
PID 1300 wrote to memory of 4012	1300	d2aefc636b6db18278187345fb5bf1e898c2edae0d0edb35cb4e736ac434ad7a.exe	79
PID 4012 wrote to memory of 5076	4012	explorer.exe	81
PID 4012 wrote to memory of 5076	4012	explorer.exe	81
PID 4012 wrote to memory of 5076	4012	explorer.exe	81
PID 5076 wrote to memory of 3232	5076	spoolsv.exe	83
PID 5076 wrote to memory of 3232	5076	spoolsv.exe	83
PID 5076 wrote to memory of 3232	5076	spoolsv.exe	83
PID 3232 wrote to memory of 2512	3232	svchost.exe	84
PID 3232 wrote to memory of 2512	3232	svchost.exe	84
PID 3232 wrote to memory of 2512	3232	svchost.exe	84
PID 3232 wrote to memory of 1364	3232	svchost.exe	85
PID 3232 wrote to memory of 1364	3232	svchost.exe	85
PID 3232 wrote to memory of 1364	3232	svchost.exe	85
PID 3232 wrote to memory of 3000	3232	svchost.exe	90
PID 3232 wrote to memory of 3000	3232	svchost.exe	90
PID 3232 wrote to memory of 3000	3232	svchost.exe	90
PID 3232 wrote to memory of 4352	3232	svchost.exe	94
PID 3232 wrote to memory of 4352	3232	svchost.exe	94
PID 3232 wrote to memory of 4352	3232	svchost.exe	94

C:\Users\Admin\AppData\Local\Temp\d2aefc636b6db18278187345fb5bf1e898c2edae0d0edb35cb4e736ac434ad7a.exe
"C:\Users\Admin\AppData\Local\Temp\d2aefc636b6db18278187345fb5bf1e898c2edae0d0edb35cb4e736ac434ad7a.exe"
1⤵
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1300
- \??\c:\windows\system\explorer.exe
  c:\windows\system\explorer.exe
  2⤵
  - Modifies WinLogon for persistence
  - Modifies visiblity of hidden/system files in Explorer
  - Modifies Installed Components in the registry
  - Executes dropped EXE
  - Adds Run key to start application
  - Drops file in Windows directory
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4012
- - \??\c:\windows\system\spoolsv.exe
    c:\windows\system\spoolsv.exe SE
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:5076
  - - \??\c:\windows\system\svchost.exe
      c:\windows\system\svchost.exe
      4⤵
      Modifies WinLogon for persistence
      Modifies visiblity of hidden/system files in Explorer
      Modifies Installed Components in the registry
      Executes dropped EXE
      Adds Run key to start application
      Drops file in Windows directory
      Suspicious behavior: EnumeratesProcesses
      Suspicious behavior: GetForegroundWindowSpam
      Suspicious use of SetWindowsHookEx
      Suspicious use of WriteProcessMemory
      PID:3232
    - - \??\c:\windows\system\spoolsv.exe
        
        c:\windows\system\spoolsv.exe PR
        5⤵
        Executes dropped EXE
        Suspicious use of SetWindowsHookEx
        
        PID:2512
    - - C:\Windows\SysWOW64\at.exe
        
        at 04:26 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
        5⤵
        
        PID:1364
    - - C:\Windows\SysWOW64\at.exe
        
        at 04:27 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
        5⤵
        
        PID:3000
    - - C:\Windows\SysWOW64\at.exe
        
        at 04:28 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
        5⤵
        
        PID:4352

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

Winlogon Helper DLL

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Defense Evasion

Hide Artifacts

T1564

Hidden Files and Directories

T1564.001

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\mrsys.exe

Filesize
66KB

MD5
770f70bd83d9edf145d5eb4a85cacefd

SHA1
62b103b3e7c8b6b6baed284f16b5ce8bc6f46c97

SHA256
d4cd43ebe7588f5fd6dffe9da3f729a04a3f71c96fb7c807417939637da03a2f

SHA512
e2bb25628817dcbdd6fe7a33d8b1a0f5ac046b9ae8bf5493cb23834c3e3d1594d2d48dbe0449b92dd2f2f3cc1a09143a29b77107fabe61dd3b47c7c7f5124c3e

Download Submit
C:\Windows\System\spoolsv.exe

Filesize
66KB

MD5
b1ca700ff7bf83c4ebf78fb8ff6b45bf

SHA1
c3b742ffee1a411cd5718473851c8c205b71aa51

SHA256
d3b9154273cceeb3c6ee2435948de0ef9d0818eb2fabd8706e75e623e33f9aed

SHA512
33f95ff815bd421770c87ff10711441ebae9cbd694f817042151a633011f4d9f81c21f068e0b6f01678a44d01f08b8164c6b8b5cc070b6bc7059cddc69e90946

Download Submit
\??\c:\windows\system\explorer.exe

Filesize
66KB

MD5
dcd9ce9bb6ccee604e85fcdfba3d4759

SHA1
2b2af21dddfdb01c875d6e7434afe723c71a31b0

SHA256
18cabd59c9a2a3e25356935e538c3c0b22aefca4910eef8fbfefa8fa8cc3b67a

SHA512
27d910d21ce6e33e8acf148b22dcf0dab2d94ca3f3e8929258e8b83c04dbe850ba40dec31425346995ec254570aaeee9c29c917eda81a1e394c040559fc0c738

Download Submit
\??\c:\windows\system\svchost.exe

Filesize
66KB

MD5
5c11f3c5f86d39360e0281ec1d8bd911

SHA1
273ddd0e85ec508c12a0d86f573050ebb2ecab0a

SHA256
272c434fdebdd9d35671e222fd2ac5cb7946bb54ec8adf33d21edb19562cfa43

SHA512
99a527b0af9d9c3ba22d8ecbb18b5069c9e8036e65333887cf43659fadbcf87119b23400a092fb6f4c3234c829c6ef665eb6d2ee12358dbf7bb2ad60564c9505

Download Submit
memory/1300-2-0x0000000074BF0000-0x0000000074D4D000-memory.dmp

Filesize
1.4MB

Download
memory/1300-57-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/1300-58-0x0000000000401000-0x000000000042E000-memory.dmp

Filesize
180KB

Download
memory/1300-4-0x0000000000401000-0x000000000042E000-memory.dmp

Filesize
180KB

Download
memory/1300-3-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/1300-1-0x00000000001C0000-0x00000000001C4000-memory.dmp

Filesize
16KB

Download
memory/1300-0-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/1300-56-0x00000000001C0000-0x00000000001C4000-memory.dmp

Filesize
16KB

Download
memory/2512-50-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/2512-44-0x0000000074BF0000-0x0000000074D4D000-memory.dmp

Filesize
1.4MB

Download
memory/3232-38-0x0000000074BF0000-0x0000000074D4D000-memory.dmp

Filesize
1.4MB

Download
memory/3232-37-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/3232-62-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/4012-60-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/4012-71-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/4012-13-0x0000000074BF0000-0x0000000074D4D000-memory.dmp

Filesize
1.4MB

Download
memory/4012-15-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/5076-25-0x0000000074BF0000-0x0000000074D4D000-memory.dmp

Filesize
1.4MB

Download
memory/5076-54-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/5076-30-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/5076-26-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/5076-24-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download