1f71572c3d8f8b458cffdbdf64df8f0d2a56b6d0155e8c542707ed68126d7d7a

Analysis

max time kernel
150s
max time network
100s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
10/06/2024, 02:47

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

1f71572c3d8f8b458cffdbdf64df8f0d2a56b6d0155e8c542707ed68126d7d7a.exe
Size

66KB
MD5

5d1f21b0fdf57adce184b5520f47b4d5
SHA1

d0d273ce28ad23c4bc34db1b9fbc9127c4fe0b20
SHA256

1f71572c3d8f8b458cffdbdf64df8f0d2a56b6d0155e8c542707ed68126d7d7a
SHA512

30d96e698ef44e3bbaba40ae1a47f97c4238e1a30d1ddf1f04c3fe8f588abb2284e598375ece1dd472580e3465e560e881acd4632d7dac5c50e3ba34810e138d
SSDEEP

1536:EHfetdklPp+07gDSrB8Xru2zGeJxgawTzpXzrDJrXis:IeklMMYJhqezw/pXzH9is

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-1-5-21-540404634-651139247-2967210625-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	explorer.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-540404634-651139247-2967210625-1000\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 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
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

Executes dropped EXE 4 IoCs

pid	Process
4984	explorer.exe
4940	spoolsv.exe
4312	svchost.exe
4372	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\explorer.exe	1f71572c3d8f8b458cffdbdf64df8f0d2a56b6d0155e8c542707ed68126d7d7a.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
File opened for modification	C:\Windows\system\udsys.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
2320	1f71572c3d8f8b458cffdbdf64df8f0d2a56b6d0155e8c542707ed68126d7d7a.exe
2320	1f71572c3d8f8b458cffdbdf64df8f0d2a56b6d0155e8c542707ed68126d7d7a.exe
4984	explorer.exe
4984	explorer.exe
4984	explorer.exe
4984	explorer.exe
4984	explorer.exe
4984	explorer.exe
4312	svchost.exe
4312	svchost.exe
4312	svchost.exe
4312	svchost.exe
4984	explorer.exe
4984	explorer.exe
4312	svchost.exe
4312	svchost.exe
4984	explorer.exe
4984	explorer.exe
4312	svchost.exe
4312	svchost.exe
4984	explorer.exe
4984	explorer.exe
4312	svchost.exe
4312	svchost.exe
4984	explorer.exe
4984	explorer.exe
4312	svchost.exe
4312	svchost.exe
4984	explorer.exe
4984	explorer.exe
4312	svchost.exe
4312	svchost.exe
4984	explorer.exe
4984	explorer.exe
4312	svchost.exe
4312	svchost.exe
4984	explorer.exe
4984	explorer.exe
4312	svchost.exe
4312	svchost.exe
4984	explorer.exe
4984	explorer.exe
4312	svchost.exe
4312	svchost.exe
4984	explorer.exe
4984	explorer.exe
4312	svchost.exe
4312	svchost.exe
4984	explorer.exe
4984	explorer.exe
4312	svchost.exe
4312	svchost.exe
4984	explorer.exe
4984	explorer.exe
4312	svchost.exe
4312	svchost.exe
4984	explorer.exe
4984	explorer.exe
4312	svchost.exe
4312	svchost.exe
4984	explorer.exe
4984	explorer.exe
4312	svchost.exe
4312	svchost.exe

Suspicious behavior: GetForegroundWindowSpam 2 IoCs

pid	Process
4984	explorer.exe
4312	svchost.exe

Suspicious use of SetWindowsHookEx 12 IoCs

pid	Process
2320	1f71572c3d8f8b458cffdbdf64df8f0d2a56b6d0155e8c542707ed68126d7d7a.exe
2320	1f71572c3d8f8b458cffdbdf64df8f0d2a56b6d0155e8c542707ed68126d7d7a.exe
4984	explorer.exe
4984	explorer.exe
4940	spoolsv.exe
4940	spoolsv.exe
4312	svchost.exe
4312	svchost.exe
4372	spoolsv.exe
4372	spoolsv.exe
4984	explorer.exe
4984	explorer.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 2320 wrote to memory of 4984	2320	1f71572c3d8f8b458cffdbdf64df8f0d2a56b6d0155e8c542707ed68126d7d7a.exe	81
PID 2320 wrote to memory of 4984	2320	1f71572c3d8f8b458cffdbdf64df8f0d2a56b6d0155e8c542707ed68126d7d7a.exe	81
PID 2320 wrote to memory of 4984	2320	1f71572c3d8f8b458cffdbdf64df8f0d2a56b6d0155e8c542707ed68126d7d7a.exe	81
PID 4984 wrote to memory of 4940	4984	explorer.exe	82
PID 4984 wrote to memory of 4940	4984	explorer.exe	82
PID 4984 wrote to memory of 4940	4984	explorer.exe	82
PID 4940 wrote to memory of 4312	4940	spoolsv.exe	83
PID 4940 wrote to memory of 4312	4940	spoolsv.exe	83
PID 4940 wrote to memory of 4312	4940	spoolsv.exe	83
PID 4312 wrote to memory of 4372	4312	svchost.exe	84
PID 4312 wrote to memory of 4372	4312	svchost.exe	84
PID 4312 wrote to memory of 4372	4312	svchost.exe	84
PID 4312 wrote to memory of 3632	4312	svchost.exe	85
PID 4312 wrote to memory of 3632	4312	svchost.exe	85
PID 4312 wrote to memory of 3632	4312	svchost.exe	85
PID 4312 wrote to memory of 5012	4312	svchost.exe	95
PID 4312 wrote to memory of 5012	4312	svchost.exe	95
PID 4312 wrote to memory of 5012	4312	svchost.exe	95
PID 4312 wrote to memory of 1584	4312	svchost.exe	97
PID 4312 wrote to memory of 1584	4312	svchost.exe	97
PID 4312 wrote to memory of 1584	4312	svchost.exe	97

C:\Users\Admin\AppData\Local\Temp\1f71572c3d8f8b458cffdbdf64df8f0d2a56b6d0155e8c542707ed68126d7d7a.exe
"C:\Users\Admin\AppData\Local\Temp\1f71572c3d8f8b458cffdbdf64df8f0d2a56b6d0155e8c542707ed68126d7d7a.exe"
1⤵
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2320
- \??\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:4984
- - \??\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:4940
  - - \??\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:4312
    - - \??\c:\windows\system\spoolsv.exe
        
        c:\windows\system\spoolsv.exe PR
        5⤵
        Executes dropped EXE
        Suspicious use of SetWindowsHookEx
        
        PID:4372
    - - C:\Windows\SysWOW64\at.exe
        
        at 02:49 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
        5⤵
        
        PID:3632
    - - C:\Windows\SysWOW64\at.exe
        
        at 02:50 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
        5⤵
        
        PID:5012
    - - C:\Windows\SysWOW64\at.exe
        
        at 02:51 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
        5⤵
        
        PID:1584

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

Loading Replay Monitor...

Downloads

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

Filesize
66KB

MD5
98f661976a4a82f3606f6e9a6476a28b

SHA1
e47e6a30994d50827eaf11972204b27e8ee3cca8

SHA256
e0a5bcc39877f9a8231d64ccc83504f64a370281c3814f9bf98bf7e6fb71a5cf

SHA512
9990e80ce0e629294057fd4bb643b515ec6caae6b344a3006e2d0a7afdc449a5e6635d1eb4e5b853288fe5e56c90621d36c05a939138b11b6882948da7a25cb0

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

Filesize
66KB

MD5
c20760ebbe93a02df172223024a44426

SHA1
850fe65d219b8d778c42eab165123bd02a9025ae

SHA256
c2448795717b9d34cb3b4dd4c5ec563f3c64d9438fd63e9dde6e52dd6507192a

SHA512
e398e8cc632191c3d1f66542470ea5c20239f5d65ccea885f15d952660626f7071435039f1b7c086fc6edc7637cb0b9f2f43fad61922de68a3c5af23f48ef091

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

Filesize
66KB

MD5
ffa8b87809c93bc47796d0889e8f1a96

SHA1
051add480cc13b9dd71191756cdefa8b0763b8fa

SHA256
f6e22747ea9bd6dd75ff493eca13d49bd77cf24d4b0b66b6f82e387065fb9e2e

SHA512
0415354aef3f763cccfd8488feff47378f8041a80c54bb0e558329bf83109b101309569296e81e41baf021be06548eb1289ddbfaee4c689b03ecb8d88e7f926a

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

Filesize
66KB

MD5
4397ed135a4ad51698d86e7b1c215e9a

SHA1
ede949ca616e76fbbe918aa90f5a05db1618d7c0

SHA256
1d13a917f720f4451ab555e9f84b8d5d58ebb06db3c4dbdb0c66feb388756d96

SHA512
88cd2693a958844a03abc8edfeb96deb19d7770b4d5f5211750090579f492c3dfa3171bcd36f23033b92ed102f17af7f989b2c6321b9b43c632bed7039e0ddb4

Download Submit
memory/2320-58-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/2320-2-0x0000000074BB0000-0x0000000074D0D000-memory.dmp

Filesize
1.4MB

Download
memory/2320-4-0x0000000000401000-0x000000000042E000-memory.dmp

Filesize
180KB

Download
memory/2320-3-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/2320-59-0x0000000000401000-0x000000000042E000-memory.dmp

Filesize
180KB

Download
memory/2320-47-0x00000000001C0000-0x00000000001C4000-memory.dmp

Filesize
16KB

Download
memory/2320-0-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/2320-1-0x00000000001C0000-0x00000000001C4000-memory.dmp

Filesize
16KB

Download
memory/4312-41-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/4312-63-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/4312-37-0x0000000074BB0000-0x0000000074D0D000-memory.dmp

Filesize
1.4MB

Download
memory/4372-48-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/4372-44-0x0000000074BB0000-0x0000000074D0D000-memory.dmp

Filesize
1.4MB

Download
memory/4372-54-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/4940-30-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/4940-26-0x0000000074BB0000-0x0000000074D0D000-memory.dmp

Filesize
1.4MB

Download
memory/4940-25-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/4940-56-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/4984-18-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/4984-14-0x0000000074BB0000-0x0000000074D0D000-memory.dmp

Filesize
1.4MB

Download
memory/4984-61-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/4984-13-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/4984-72-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download