01f1d58f0a432ef693b1f7c78e10bdb490c1d3533c9f2ca487e2183bf0352837

Analysis

max time kernel
151s
max time network
148s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
14-06-2024 19:04

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General

Target

01f1d58f0a432ef693b1f7c78e10bdb490c1d3533c9f2ca487e2183bf0352837.exe
Size

66KB
MD5

5f5926a6a95556b9d29ac14cee9cb370
SHA1

e22a2ad1ccfd8a9b9763c3b4325fa50a20c57134
SHA256

01f1d58f0a432ef693b1f7c78e10bdb490c1d3533c9f2ca487e2183bf0352837
SHA512

789d7e3748e4df9fcc32b4ef1f41b2cb6905154efe2138071530f133b4a4cd62661132e049fedfba2c40e289ac9f86b92809531feb09f2c68969cbbe7a5795c8
SSDEEP

1536:EHfetdklPp+07gDSrB8Xru2zGeJxgawTzpXzrDJrXi9:IeklMMYJhqezw/pXzH9i9

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"	explorer.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\shell = "C:\\Windows\\explorer.exe, c:\\windows\\system\\explorer.exe"	svchost.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-1-5-21-3808065738-1666277613-1125846146-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	explorer.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\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
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
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

Executes dropped EXE 4 IoCs

pid	Process
3464	explorer.exe
1576	spoolsv.exe
3632	svchost.exe
4512	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\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
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\RunOnce\Svchost = "c:\\windows\\system\\svchost.exe RO"	svchost.exe

Drops file in Windows directory 6 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system\udsys.exe	explorer.exe
File opened for modification	\??\c:\windows\system\explorer.exe	01f1d58f0a432ef693b1f7c78e10bdb490c1d3533c9f2ca487e2183bf0352837.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
File opened for modification	\??\c:\windows\system\svchost.exe	svchost.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
3352	01f1d58f0a432ef693b1f7c78e10bdb490c1d3533c9f2ca487e2183bf0352837.exe
3352	01f1d58f0a432ef693b1f7c78e10bdb490c1d3533c9f2ca487e2183bf0352837.exe
3464	explorer.exe
3464	explorer.exe
3464	explorer.exe
3464	explorer.exe
3464	explorer.exe
3464	explorer.exe
3632	svchost.exe
3632	svchost.exe
3632	svchost.exe
3632	svchost.exe
3464	explorer.exe
3464	explorer.exe
3632	svchost.exe
3632	svchost.exe
3464	explorer.exe
3464	explorer.exe
3632	svchost.exe
3632	svchost.exe
3464	explorer.exe
3464	explorer.exe
3632	svchost.exe
3632	svchost.exe
3464	explorer.exe
3464	explorer.exe
3632	svchost.exe
3632	svchost.exe
3464	explorer.exe
3464	explorer.exe
3632	svchost.exe
3632	svchost.exe
3464	explorer.exe
3464	explorer.exe
3632	svchost.exe
3632	svchost.exe
3464	explorer.exe
3464	explorer.exe
3632	svchost.exe
3632	svchost.exe
3464	explorer.exe
3464	explorer.exe
3632	svchost.exe
3632	svchost.exe
3464	explorer.exe
3464	explorer.exe
3632	svchost.exe
3632	svchost.exe
3464	explorer.exe
3464	explorer.exe
3632	svchost.exe
3632	svchost.exe
3464	explorer.exe
3464	explorer.exe
3632	svchost.exe
3632	svchost.exe
3464	explorer.exe
3464	explorer.exe
3632	svchost.exe
3632	svchost.exe
3632	svchost.exe
3464	explorer.exe
3632	svchost.exe
3464	explorer.exe

Suspicious behavior: GetForegroundWindowSpam 2 IoCs

pid	Process
3632	svchost.exe
3464	explorer.exe

Suspicious use of SetWindowsHookEx 12 IoCs

pid	Process
3352	01f1d58f0a432ef693b1f7c78e10bdb490c1d3533c9f2ca487e2183bf0352837.exe
3352	01f1d58f0a432ef693b1f7c78e10bdb490c1d3533c9f2ca487e2183bf0352837.exe
3464	explorer.exe
3464	explorer.exe
1576	spoolsv.exe
1576	spoolsv.exe
3632	svchost.exe
3632	svchost.exe
4512	spoolsv.exe
4512	spoolsv.exe
3464	explorer.exe
3464	explorer.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 3352 wrote to memory of 3464	3352	01f1d58f0a432ef693b1f7c78e10bdb490c1d3533c9f2ca487e2183bf0352837.exe	91
PID 3352 wrote to memory of 3464	3352	01f1d58f0a432ef693b1f7c78e10bdb490c1d3533c9f2ca487e2183bf0352837.exe	91
PID 3352 wrote to memory of 3464	3352	01f1d58f0a432ef693b1f7c78e10bdb490c1d3533c9f2ca487e2183bf0352837.exe	91
PID 3464 wrote to memory of 1576	3464	explorer.exe	92
PID 3464 wrote to memory of 1576	3464	explorer.exe	92
PID 3464 wrote to memory of 1576	3464	explorer.exe	92
PID 1576 wrote to memory of 3632	1576	spoolsv.exe	93
PID 1576 wrote to memory of 3632	1576	spoolsv.exe	93
PID 1576 wrote to memory of 3632	1576	spoolsv.exe	93
PID 3632 wrote to memory of 4512	3632	svchost.exe	94
PID 3632 wrote to memory of 4512	3632	svchost.exe	94
PID 3632 wrote to memory of 4512	3632	svchost.exe	94
PID 3632 wrote to memory of 2012	3632	svchost.exe	95
PID 3632 wrote to memory of 2012	3632	svchost.exe	95
PID 3632 wrote to memory of 2012	3632	svchost.exe	95
PID 3632 wrote to memory of 1612	3632	svchost.exe	107
PID 3632 wrote to memory of 1612	3632	svchost.exe	107
PID 3632 wrote to memory of 1612	3632	svchost.exe	107
PID 3632 wrote to memory of 4860	3632	svchost.exe	109
PID 3632 wrote to memory of 4860	3632	svchost.exe	109
PID 3632 wrote to memory of 4860	3632	svchost.exe	109

C:\Users\Admin\AppData\Local\Temp\01f1d58f0a432ef693b1f7c78e10bdb490c1d3533c9f2ca487e2183bf0352837.exe
"C:\Users\Admin\AppData\Local\Temp\01f1d58f0a432ef693b1f7c78e10bdb490c1d3533c9f2ca487e2183bf0352837.exe"
1⤵
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3352
- \??\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:3464
- - \??\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:1576
  - - \??\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:3632
    - - \??\c:\windows\system\spoolsv.exe
        
        c:\windows\system\spoolsv.exe PR
        5⤵
        Executes dropped EXE
        Suspicious use of SetWindowsHookEx
        
        PID:4512
    - - C:\Windows\SysWOW64\at.exe
        
        at 19:06 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
        5⤵
        
        PID:2012
    - - C:\Windows\SysWOW64\at.exe
        
        at 19:07 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
        5⤵
        
        PID:1612
    - - C:\Windows\SysWOW64\at.exe
        
        at 19:08 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
        5⤵
        
        PID:4860

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4440 --field-trial-handle=2248,i,10247514684337323751,15511974759131734137,262144 --variations-seed-version /prefetch:8
1⤵
PID:3912

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
782ad92a242fb514ffe4ac4bc5cd7024

SHA1
ce5a2d267b22b790b35e5363fedefab758bb384b

SHA256
f98df4aa4b12aa6b24cfa042256866924f92eb5a26c8fdf557bfbe87ea185625

SHA512
5b0ccc37d52ed43dafe0e6d51200039959ce63fc84ec602085b1005c18c47f5c99e71bfc87fcc3db8005b3f17dc52670b61d4dfe2ad3425ee493a62cb3300e66

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

Filesize
66KB

MD5
8d39dbe8892550056e62c31203549f33

SHA1
2318c24836eaa0756e81a1015210222301cfb43a

SHA256
51c8d51d4e800d5d921f439306cbb65f777a5b497d9b8fe50cf8953aae597070

SHA512
a6ac64eef40c0f1db7b9061b1f2d4365cd57ce7a3568250577b757ec554bfafcb1e1d333f9ed444735119cb4fe38070c6138b05f8d60c9ca61345fcda7b03018

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

Filesize
66KB

MD5
f97961431822b770894b3ad570018f8b

SHA1
e5dfb651c2a20a38999662098f1e96d4398e8932

SHA256
c34065a508339ed75c1f5a4331867f0c9f5dfa3310d70e88d3ed442f83007b61

SHA512
922c3ae37d21258e7dae6e7f99311e76159b800f7a0bbef4265588ff0062d309b7c716eedc14441009ce664f33fa782510a69a5fe7a5ee764e0872adc3aa904d

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

Filesize
66KB

MD5
6d61ee1ad05468ac13f0c4c924e4e173

SHA1
a51c7fb34dcf5200b86b7e62ed136e8a9957c062

SHA256
a79322087d31855382dab42a7e792627bba0889d7129e4f1b87fe3ebe002e43b

SHA512
e2f608b7c6c6399bf7a01871c9f0005d577d933ace66b91b98352555a2fe30d2414eac94a2bf76694f5e484230a45a4789a79488365122b8f3d0900d6234ba48

Download Submit
memory/1576-25-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/1576-26-0x00000000755A0000-0x00000000756FD000-memory.dmp

Filesize
1.4MB

Download
memory/1576-55-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/3352-0-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/3352-4-0x0000000000401000-0x000000000042E000-memory.dmp

Filesize
180KB

Download
memory/3352-3-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/3352-1-0x00000000001D0000-0x00000000001D4000-memory.dmp

Filesize
16KB

Download
memory/3352-2-0x00000000755A0000-0x00000000756FD000-memory.dmp

Filesize
1.4MB

Download
memory/3352-57-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/3352-40-0x00000000001D0000-0x00000000001D4000-memory.dmp

Filesize
16KB

Download
memory/3352-58-0x0000000000401000-0x000000000042E000-memory.dmp

Filesize
180KB

Download
memory/3352-44-0x0000000000401000-0x000000000042E000-memory.dmp

Filesize
180KB

Download
memory/3464-13-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/3464-16-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/3464-60-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/3464-73-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/3464-14-0x00000000755A0000-0x00000000756FD000-memory.dmp

Filesize
1.4MB

Download
memory/3632-37-0x00000000755A0000-0x00000000756FD000-memory.dmp

Filesize
1.4MB

Download
memory/3632-36-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/3632-62-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/4512-51-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/4512-45-0x00000000755A0000-0x00000000756FD000-memory.dmp

Filesize
1.4MB

Download