565d7fe44800a4f2af5d1690ed669b6cc43915ec642baa1466293bf31f059f28

Analysis

max time kernel
149s
max time network
144s
platform
windows10-2004_x64
resource
win10v2004-20260911-en
resource tags

arch:x64arch:x86image:win10v2004-20260911-enlocale:en-usos:windows10-2004-x64systemwindows
submitted
18/10/2026, 22:13

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General

Target
ScreenMarkup-Setup.exe
Size 7.1MB
Sample261018-145ldscg95
SHA256 565d7fe44800a4f2af5d1690ed669b6cc43915ec642baa1466293bf31f059f28
MD5 77c0dcee328b0e09947843cd64d5883f
SHA1 ef959b827b194aa20e5a354c6b5a0a2fdbcc14c8
SHA512 4282a166bcdbc189ccb92b19c35b7f57271c086c5027be2fd47b642b72c34291216a1a789b56196013b836c831886fa3357f233c645ec088e5bdf264afba700a
SSDEEP 49152:Bom8erqzX1NAXrRzpw0Xw84Ggo+bpJYZ8mZDTUuQPrjCWOTNM9nNZw084POKyQs+:satzpw5dGv+kZJp0C4HrOgsJbm2q70E
TLSH
T1B3766C12BA8B99ACD05BC470834686236A2174CB0B35A9FF45C856393FA9FF05F3C759
MD5 SHA1 SHA512 SSDEEP TLSH

Score

8^/10

defense_evasion execution

Malware Config

Signatures

Command and Scripting Interpreter: PowerShell 1 TTPs 3 IoCs

Run Powershell and hide display window.

execution

PowerShell

T1059.001

pid	Process
1108	powershell.exe
4972	powershell.exe
2692	powershell.exe

Executes dropped EXE 1 IoCs

pid	Process
1148	ScreenMarkup.exe

Kills process with taskkill 2 IoCs

defense_evasion

pid	Process
4304	taskkill.exe
1952	taskkill.exe

Modifies registry key 1 TTPs 12 IoCs

Modify Registry

T1112

pid	Process
3320	reg.exe
2280	reg.exe
4724	reg.exe
3688	reg.exe
3344	reg.exe
4036	reg.exe
3228	reg.exe
760	reg.exe
1124	reg.exe
1128	reg.exe
892	reg.exe
5064	reg.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
1108	powershell.exe
1108	powershell.exe
4972	powershell.exe
4972	powershell.exe
2692	powershell.exe
2692	powershell.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeDebugPrivilege	4304	taskkill.exe
Token: SeDebugPrivilege	1108	powershell.exe
Token: SeDebugPrivilege	1952	taskkill.exe
Token: SeDebugPrivilege	4972	powershell.exe
Token: SeDebugPrivilege	2692	powershell.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
1148	ScreenMarkup.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 752 wrote to memory of 4304	752	ScreenMarkup-Setup.exe	91
PID 752 wrote to memory of 1108	752	ScreenMarkup-Setup.exe	93
PID 752 wrote to memory of 760	752	ScreenMarkup-Setup.exe	96
PID 752 wrote to memory of 1952	752	ScreenMarkup-Setup.exe	99
PID 752 wrote to memory of 4972	752	ScreenMarkup-Setup.exe	101
PID 752 wrote to memory of 2692	752	ScreenMarkup-Setup.exe	103
PID 752 wrote to memory of 1124	752	ScreenMarkup-Setup.exe	105
PID 752 wrote to memory of 1128	752	ScreenMarkup-Setup.exe	107
PID 752 wrote to memory of 892	752	ScreenMarkup-Setup.exe	109
PID 752 wrote to memory of 3320	752	ScreenMarkup-Setup.exe	111
PID 752 wrote to memory of 2280	752	ScreenMarkup-Setup.exe	113
PID 752 wrote to memory of 4724	752	ScreenMarkup-Setup.exe	115
PID 752 wrote to memory of 5064	752	ScreenMarkup-Setup.exe	117
PID 752 wrote to memory of 3688	752	ScreenMarkup-Setup.exe	119
PID 752 wrote to memory of 3344	752	ScreenMarkup-Setup.exe	121
PID 752 wrote to memory of 4036	752	ScreenMarkup-Setup.exe	123
PID 752 wrote to memory of 3228	752	ScreenMarkup-Setup.exe	125
PID 752 wrote to memory of 1148	752	ScreenMarkup-Setup.exe	127

C:\Users\Admin\AppData\Local\Temp\ScreenMarkup-Setup.exe
"C:\Users\Admin\AppData\Local\Temp\ScreenMarkup-Setup.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:752
- C:\Windows\system32\taskkill.exe
  "taskkill" /IM Scribble.exe /F
  2⤵
  - Kills process with taskkill
  - Suspicious use of AdjustPrivilegeToken
  PID:4304
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell" -NoProfile -NonInteractive -WindowStyle Hidden -Command "Remove-Item -Force -ErrorAction SilentlyContinue (Join-Path ([Environment]::GetFolderPath('Programs')) 'Scribble.lnk'), (Join-Path ([Environment]::GetFolderPath('Desktop')) 'Scribble.lnk')"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1108
- C:\Windows\system32\reg.exe
  "reg" delete HKCU\Software\Microsoft\Windows\CurrentVersion\Uninstall\Scribble /f
  2⤵
  - Modifies registry key
  PID:760
- C:\Windows\system32\taskkill.exe
  "taskkill" /IM ScreenMarkup.exe /F
  2⤵
  - Kills process with taskkill
  - Suspicious use of AdjustPrivilegeToken
  PID:1952
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell" -NoProfile -NonInteractive -WindowStyle Hidden -Command "$d = [Environment]::GetFolderPath('Programs'); $s = (New-Object -ComObject WScript.Shell).CreateShortcut((Join-Path $d 'Screen Markup.lnk')); $s.TargetPath = 'C:\Users\Admin\AppData\Local\Programs\Screen Markup\ScreenMarkup.exe'; $s.IconLocation = 'C:\Users\Admin\AppData\Local\Programs\Screen Markup\ScreenMarkup.ico'; $s.WorkingDirectory = 'C:\Users\Admin\AppData\Local\Programs\Screen Markup'; $s.Description = 'Draw on this PC from your phone or tablet'; $s.Save()"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4972
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell" -NoProfile -NonInteractive -WindowStyle Hidden -Command "$d = [Environment]::GetFolderPath('Desktop'); $s = (New-Object -ComObject WScript.Shell).CreateShortcut((Join-Path $d 'Screen Markup.lnk')); $s.TargetPath = 'C:\Users\Admin\AppData\Local\Programs\Screen Markup\ScreenMarkup.exe'; $s.IconLocation = 'C:\Users\Admin\AppData\Local\Programs\Screen Markup\ScreenMarkup.ico'; $s.WorkingDirectory = 'C:\Users\Admin\AppData\Local\Programs\Screen Markup'; $s.Description = 'Draw on this PC from your phone or tablet'; $s.Save()"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2692
- C:\Windows\system32\reg.exe
  "reg" add HKCU\Software\Microsoft\Windows\CurrentVersion\Uninstall\ScreenMarkup /v DisplayName /t REG_SZ /d "Screen Markup" /f
  2⤵
  - Modifies registry key
  PID:1124
- C:\Windows\system32\reg.exe
  "reg" add HKCU\Software\Microsoft\Windows\CurrentVersion\Uninstall\ScreenMarkup /v DisplayVersion /t REG_SZ /d 0.3.5 /f
  2⤵
  - Modifies registry key
  PID:1128
- C:\Windows\system32\reg.exe
  "reg" add HKCU\Software\Microsoft\Windows\CurrentVersion\Uninstall\ScreenMarkup /v Publisher /t REG_SZ /d "RSW Digital Ltd" /f
  2⤵
  - Modifies registry key
  PID:892
- C:\Windows\system32\reg.exe
  "reg" add HKCU\Software\Microsoft\Windows\CurrentVersion\Uninstall\ScreenMarkup /v InstallLocation /t REG_SZ /d "C:\Users\Admin\AppData\Local\Programs\Screen Markup" /f
  2⤵
  - Modifies registry key
  PID:3320
- C:\Windows\system32\reg.exe
  "reg" add HKCU\Software\Microsoft\Windows\CurrentVersion\Uninstall\ScreenMarkup /v DisplayIcon /t REG_SZ /d "C:\Users\Admin\AppData\Local\Programs\Screen Markup\ScreenMarkup.ico" /f
  2⤵
  - Modifies registry key
  PID:2280
- C:\Windows\system32\reg.exe
  "reg" add HKCU\Software\Microsoft\Windows\CurrentVersion\Uninstall\ScreenMarkup /v UninstallString /t REG_SZ /d "\"C:\Users\Admin\AppData\Local\Programs\Screen Markup\Uninstall.exe\" --uninstall" /f
  2⤵
  - Modifies registry key
  PID:4724
- C:\Windows\system32\reg.exe
  "reg" add HKCU\Software\Microsoft\Windows\CurrentVersion\Uninstall\ScreenMarkup /v QuietUninstallString /t REG_SZ /d "\"C:\Users\Admin\AppData\Local\Programs\Screen Markup\Uninstall.exe\" --uninstall /S" /f
  2⤵
  - Modifies registry key
  PID:5064
- C:\Windows\system32\reg.exe
  "reg" add HKCU\Software\Microsoft\Windows\CurrentVersion\Uninstall\ScreenMarkup /v URLInfoAbout /t REG_SZ /d https://screenmarkup.com /f
  2⤵
  - Modifies registry key
  PID:3688
- C:\Windows\system32\reg.exe
  "reg" add HKCU\Software\Microsoft\Windows\CurrentVersion\Uninstall\ScreenMarkup /v NoModify /t REG_DWORD /d 1 /f
  2⤵
  - Modifies registry key
  PID:3344
- C:\Windows\system32\reg.exe
  "reg" add HKCU\Software\Microsoft\Windows\CurrentVersion\Uninstall\ScreenMarkup /v NoRepair /t REG_DWORD /d 1 /f
  2⤵
  - Modifies registry key
  PID:4036
- C:\Windows\system32\reg.exe
  "reg" add HKCU\Software\Microsoft\Windows\CurrentVersion\Uninstall\ScreenMarkup /v EstimatedSize /t REG_DWORD /d 13916 /f
  2⤵
  - Modifies registry key
  PID:3228
- C:\Users\Admin\AppData\Local\Programs\Screen Markup\ScreenMarkup.exe
  "C:\Users\Admin\AppData\Local\Programs\Screen Markup\ScreenMarkup.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of FindShellTrayWindow
  PID:1148

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

powershell.exe.log

Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log
Size 2KB
SHA256 b1f292b6199aa29c7fafbca007e5f9e3f68edcbbca1965bc828cc92dc0f18bb8
MD5 6cf293cb4d80be23433eecf74ddb5503
SHA1 24fe4752df102c2ef492954d6b046cb5512ad408
SHA512 0f91e2da0da8794b9797c7b50eb5dfd27bde4546ceb6902a776664ce887dd6f12a0dd8773d612ccc76dfd029cd280778a0f0ae17ce679b3d2ffd968dd7e94a00
TLSH
T148510F323375F1E4C8567F071E68198053BF4395EA94AF5CB298621ED92741B8F222F3
MD5 SHA1 SHA512 TLSH

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StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 64B
SHA256 a9e909f33b9423a8da36bc1f26912899487d5b4454920ab32b25c4c25c53cbf4
MD5 370ae7c1d4c3e2998a4ef0074c4f5cd6
SHA1 6d3b8016f23be8bda20e9f50275b65b1e98c6e9f
SHA512 ec2c6f48b8ca4e00b96cd274ac0920f3e663298bb435cbbf8cd327f619675fa5a634ddfac9e1a4c62be42db4050a92c8073d6c04d8457f585c39b076c17f3d31
MD5 SHA1 SHA512

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StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 1KB
SHA256 3c8e60a138d954ca2ad15a5dab6ce592410983e0134b875a74c8041b3a575fd1
MD5 049b6e9e5ae574090e37ec4f9cf48812
SHA1 8a84e30d1c55db18e6310ca185f14b8eeafa28fd
SHA512 fe854104d8b936c925a1a6b0b19ba3c5a0adebf9aa568cacc225dce64697bc3fd0a97e11cc065b5c48e27f195c22d8b4cc8221e16ac1ab7d8040d286540bb7b1
TLSH
T137215627B39CC961CC86163A109D9C1176A683C7809EDFDF6BC0D614A1AF998CB61290
MD5 SHA1 SHA512 TLSH

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ScreenMarkup.exe

Path C:\Users\Admin\AppData\Local\Programs\Screen Markup\ScreenMarkup.exe
Size 6.8MB
SHA256 ed44518a44700d72dc02d263db64ea8ddd0109a4ea731b1bc6188a45c8a8b613
MD5 5bb49e254853c5fd16b259152d5aefb2
SHA1 0ecd9e6573b881712d36fefc96306db803b2beac
SHA512 c3226a6a4cea831b62e276ef6d11b927c3ba27becdf4fa3106d8b691c21350bc4852bb91b2ba45099371749998f3c8a619c5a81962ea08cf4fb19180fdb8ae48
SSDEEP 49152:fqzX1NAXrRzpw0Xw84Ggo+bpJYZ8mZDTUuQPrjCWOTNM9nNZw084POKyQsToLLT/:Vtzpw5dGv+kZJp0C4HrOgsJbm2q7
TLSH
T168765C12B78B99ACD05BC470834686236A2174CB0B35A9FF45C856393FAAFF05F38759
MD5 SHA1 SHA512 SSDEEP TLSH

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__PSScriptPolicyTest_p2dd1hci.x0w.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_p2dd1hci.x0w.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
TLSH
T177A02228CC303B200020C0080A000002C00B800C080C8C0220000A00B20B820002F080
MD5 SHA1 SHA512 TLSH

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settings.json

Path C:\Users\Admin\AppData\Roaming\Scribble\settings.json
Size 352B
SHA256 257a03dbfb281b3a72e9aae2de792303bd04fef2bc0293a18a9c0fca2f9b6344
MD5 d04fc7b7bc7edd6f5d97de2540834882
SHA1 befb558af87bb702b360bdb057abfcb36e5f6c28
SHA512 dd90e52325abcd3d259cb1a59cdbc1c28589e758f0510a6be3f2dd328ed11e6db625c37f777f4236b3c7848534d62022c547aaa753f693a5e0106f8a6ccabe25
TLSH
T11CE026774D8900B70DE8C9A04CD3024F37AC0F0B16AE7D92A657852808CF72320F14AC
MD5 SHA1 SHA512 TLSH

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memory/1108-0-0x00000207B14E0000-0x00000207B14F0000-memory.dmp

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memory/1108-8-0x00000207B1470000-0x00000207B1492000-memory.dmp

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