cbe0b927a55c5660dcfc8bf303eaf47ece0bcb2f810bf7a440a7453f41887622

Analysis

max time kernel
150s
max time network
95s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
05/06/2024, 03:27

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General

Target

cbe0b927a55c5660dcfc8bf303eaf47ece0bcb2f810bf7a440a7453f41887622.exe
Size

66KB
MD5

a7c439d704249a3bffc08d43acd5883a
SHA1

60a38069a8dec7e5008a63eee696f5f471eda659
SHA256

cbe0b927a55c5660dcfc8bf303eaf47ece0bcb2f810bf7a440a7453f41887622
SHA512

aebd56f3cee77c54676516dd1d45d93906718f2f62253aa1f123a297d133b7af474c34054f745ffe60ccca04dd4127d573f3a49b360a70fccb4db8ebff5630a2
SSDEEP

1536:EHfetdklPp+07gDSrB8Xru2zGeJxgawTzpXzrDJrXiw:IeklMMYJhqezw/pXzH9iw

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-1-5-21-1162180587-977231257-2194346871-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	explorer.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1162180587-977231257-2194346871-1000\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\{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
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

Executes dropped EXE 4 IoCs

pid	Process
440	explorer.exe
1552	spoolsv.exe
3284	svchost.exe
1156	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\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
File opened for modification	\??\c:\windows\system\explorer.exe	cbe0b927a55c5660dcfc8bf303eaf47ece0bcb2f810bf7a440a7453f41887622.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
3216	cbe0b927a55c5660dcfc8bf303eaf47ece0bcb2f810bf7a440a7453f41887622.exe
3216	cbe0b927a55c5660dcfc8bf303eaf47ece0bcb2f810bf7a440a7453f41887622.exe
440	explorer.exe
440	explorer.exe
440	explorer.exe
440	explorer.exe
440	explorer.exe
440	explorer.exe
3284	svchost.exe
3284	svchost.exe
3284	svchost.exe
3284	svchost.exe
440	explorer.exe
440	explorer.exe
3284	svchost.exe
3284	svchost.exe
440	explorer.exe
440	explorer.exe
3284	svchost.exe
3284	svchost.exe
440	explorer.exe
440	explorer.exe
3284	svchost.exe
3284	svchost.exe
440	explorer.exe
440	explorer.exe
3284	svchost.exe
3284	svchost.exe
440	explorer.exe
440	explorer.exe
3284	svchost.exe
3284	svchost.exe
440	explorer.exe
440	explorer.exe
3284	svchost.exe
3284	svchost.exe
440	explorer.exe
440	explorer.exe
3284	svchost.exe
3284	svchost.exe
440	explorer.exe
440	explorer.exe
3284	svchost.exe
3284	svchost.exe
440	explorer.exe
440	explorer.exe
3284	svchost.exe
3284	svchost.exe
440	explorer.exe
440	explorer.exe
3284	svchost.exe
3284	svchost.exe
440	explorer.exe
440	explorer.exe
3284	svchost.exe
3284	svchost.exe
440	explorer.exe
440	explorer.exe
3284	svchost.exe
3284	svchost.exe
440	explorer.exe
440	explorer.exe
3284	svchost.exe
3284	svchost.exe

Suspicious behavior: GetForegroundWindowSpam 2 IoCs

pid	Process
3284	svchost.exe
440	explorer.exe

Suspicious use of SetWindowsHookEx 12 IoCs

pid	Process
3216	cbe0b927a55c5660dcfc8bf303eaf47ece0bcb2f810bf7a440a7453f41887622.exe
3216	cbe0b927a55c5660dcfc8bf303eaf47ece0bcb2f810bf7a440a7453f41887622.exe
440	explorer.exe
440	explorer.exe
1552	spoolsv.exe
1552	spoolsv.exe
3284	svchost.exe
3284	svchost.exe
1156	spoolsv.exe
1156	spoolsv.exe
440	explorer.exe
440	explorer.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 3216 wrote to memory of 440	3216	cbe0b927a55c5660dcfc8bf303eaf47ece0bcb2f810bf7a440a7453f41887622.exe	82
PID 3216 wrote to memory of 440	3216	cbe0b927a55c5660dcfc8bf303eaf47ece0bcb2f810bf7a440a7453f41887622.exe	82
PID 3216 wrote to memory of 440	3216	cbe0b927a55c5660dcfc8bf303eaf47ece0bcb2f810bf7a440a7453f41887622.exe	82
PID 440 wrote to memory of 1552	440	explorer.exe	83
PID 440 wrote to memory of 1552	440	explorer.exe	83
PID 440 wrote to memory of 1552	440	explorer.exe	83
PID 1552 wrote to memory of 3284	1552	spoolsv.exe	84
PID 1552 wrote to memory of 3284	1552	spoolsv.exe	84
PID 1552 wrote to memory of 3284	1552	spoolsv.exe	84
PID 3284 wrote to memory of 1156	3284	svchost.exe	85
PID 3284 wrote to memory of 1156	3284	svchost.exe	85
PID 3284 wrote to memory of 1156	3284	svchost.exe	85
PID 3284 wrote to memory of 4064	3284	svchost.exe	87
PID 3284 wrote to memory of 4064	3284	svchost.exe	87
PID 3284 wrote to memory of 4064	3284	svchost.exe	87
PID 3284 wrote to memory of 540	3284	svchost.exe	99
PID 3284 wrote to memory of 540	3284	svchost.exe	99
PID 3284 wrote to memory of 540	3284	svchost.exe	99
PID 3284 wrote to memory of 4108	3284	svchost.exe	101
PID 3284 wrote to memory of 4108	3284	svchost.exe	101
PID 3284 wrote to memory of 4108	3284	svchost.exe	101

C:\Users\Admin\AppData\Local\Temp\cbe0b927a55c5660dcfc8bf303eaf47ece0bcb2f810bf7a440a7453f41887622.exe
"C:\Users\Admin\AppData\Local\Temp\cbe0b927a55c5660dcfc8bf303eaf47ece0bcb2f810bf7a440a7453f41887622.exe"
1⤵
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3216
- \??\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:440
- - \??\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:1552
  - - \??\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:3284
    - - \??\c:\windows\system\spoolsv.exe
        
        c:\windows\system\spoolsv.exe PR
        5⤵
        Executes dropped EXE
        Suspicious use of SetWindowsHookEx
        
        PID:1156
    - - C:\Windows\SysWOW64\at.exe
        
        at 03:29 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
        5⤵
        
        PID:4064
    - - C:\Windows\SysWOW64\at.exe
        
        at 03:30 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
        5⤵
        
        PID:540
    - - C:\Windows\SysWOW64\at.exe
        
        at 03:31 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
        5⤵
        
        PID:4108

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
2cc7c9e5d153dce695307a3d37a67528

SHA1
b58ae2dd6307a6130d8fce23486fbc1ab92ce035

SHA256
b7c5243cc07be71ef78f7301749baa0902dbdd70100f1601038483d7b453cd6a

SHA512
df46acc654a7d88b42e875f37b7a7217097bb9eacd7b1f5ef611c5431df8bb5cc30d3a63cf9bccb7721d9d39faef95c9675df14ce87b3ceafdc8a685c68f710e

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

Filesize
66KB

MD5
d11e5f2189d3f12dd420ce18bdfb01f6

SHA1
b558680476a1f93ad26cd5a9e5313ba313823610

SHA256
d2e39caaf0a1181ec2ccb8abeb3c1c8e640b71431c9feee2614b2944da9b1b13

SHA512
603fc0f4ec50537bc934af137c438eb8c878b952a2afb7dfa4fbc52c4b4e3074e89a9bbba7f18c6f200dc5f74586b8e62286c9776f90a15aa708ca92324deb4a

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

Filesize
66KB

MD5
876f289f74f6ac825015b2e8ac03ac6b

SHA1
584dd9ac325ba31a96a982f9b0cfbe1b39f588ae

SHA256
b9dc53ee718ff358c765a0cd3f89f560e3de1d0d1974fb5601f83228c337eaa0

SHA512
d576c06603dc59a4d07394908eca8170bfc8c92db0a043c80a3d5a98ab6ff70f50b677308cae0c1777a843685d994a2703f78d95dbf275602512a2dd7da816ca

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

Filesize
66KB

MD5
f51021115e296ed1c266eed11724ed93

SHA1
01ab243a5ccddbf5598deaf3f3b37ff786a44129

SHA256
4fa6eb80ccf33d115049acff9b44da56ee3c6a4f93916894ed5384851656da41

SHA512
1707d3b6ddb789e4e7080093c4a747f9e769035ec3b96eb1ff7b3a6f3fd89ff7ba55f0407f4e9237a0fab17a732e1157c84defc48d556692a220983f480cb0a6

Download Submit
memory/440-13-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/440-71-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/440-14-0x0000000074B30000-0x0000000074C8D000-memory.dmp

Filesize
1.4MB

Download
memory/440-17-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/440-60-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/1156-48-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/1156-53-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/1156-44-0x0000000074B30000-0x0000000074C8D000-memory.dmp

Filesize
1.4MB

Download
memory/1552-25-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/1552-26-0x0000000074B30000-0x0000000074C8D000-memory.dmp

Filesize
1.4MB

Download
memory/1552-55-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/3216-58-0x0000000000401000-0x000000000042E000-memory.dmp

Filesize
180KB

Download
memory/3216-1-0x0000000074B30000-0x0000000074C8D000-memory.dmp

Filesize
1.4MB

Download
memory/3216-4-0x0000000000401000-0x000000000042E000-memory.dmp

Filesize
180KB

Download
memory/3216-2-0x00000000001C0000-0x00000000001C4000-memory.dmp

Filesize
16KB

Download
memory/3216-57-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/3216-3-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/3216-0-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/3284-41-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/3284-37-0x0000000074B30000-0x0000000074C8D000-memory.dmp

Filesize
1.4MB

Download
memory/3284-36-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/3284-62-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download