8065bc4d60f43f2bbaac5833d71ef89525e53a6a5b1047c3ecb8739d37432600

Analysis

max time kernel
141s
max time network
157s
platform
windows10-2004_x64
resource
win10v2004-20230703-en
resource tags

arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system
submitted
13/07/2023, 18:00

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General

Target

rhysida.exe
Size

1.2MB
MD5

0c8e88877383ccd23a755f429006b437
SHA1

69b3d913a3967153d1e91ba1a31ebed839b297ed
SHA256

a864282fea5a536510ae86c77ce46f7827687783628e4f2ceb5bf2c41b8cd3c6
SHA512

ba5296a84b7107b293d1afd4752157edaa1a3f1059685ecad2ddea9b9221ee9c8092ce5cae6f2f6a4866e25ca0bf66dd3fbc0786b2a26cb708d2cd536dd85041
SSDEEP

24576:utP7hdO1s6Skscec1SgnyN9HPFCCNhQI6GOfaFVIVrYwcMavDiZn3m75/J7:gLO1qkscec0gnyN9HPFCCNSI6GOfaFVp

Score

9^/10

ransomware spyware stealer

Malware Config

Signatures

Renames multiple (1621) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
ransomware
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081

Sets desktop wallpaper using registry 2 TTPs 1 IoCs

ransomware

Defacement

T1491

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-4176143399-3250363947-192774652-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Public\\bg.jpg"	reg.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2724	powershell.exe
2724	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2724	powershell.exe

Suspicious use of WriteProcessMemory 56 IoCs

description	pid	Process	procid_target
PID 4616 wrote to memory of 5024	4616	rhysida.exe	99
PID 4616 wrote to memory of 5024	4616	rhysida.exe	99
PID 5024 wrote to memory of 4988	5024	cmd.exe	100
PID 5024 wrote to memory of 4988	5024	cmd.exe	100
PID 4988 wrote to memory of 3940	4988	cmd.exe	101
PID 4988 wrote to memory of 3940	4988	cmd.exe	101
PID 4616 wrote to memory of 2792	4616	rhysida.exe	102
PID 4616 wrote to memory of 2792	4616	rhysida.exe	102
PID 2792 wrote to memory of 3192	2792	cmd.exe	103
PID 2792 wrote to memory of 3192	2792	cmd.exe	103
PID 3192 wrote to memory of 4488	3192	cmd.exe	104
PID 3192 wrote to memory of 4488	3192	cmd.exe	104
PID 4616 wrote to memory of 1908	4616	rhysida.exe	105
PID 4616 wrote to memory of 1908	4616	rhysida.exe	105
PID 1908 wrote to memory of 4780	1908	cmd.exe	106
PID 1908 wrote to memory of 4780	1908	cmd.exe	106
PID 4780 wrote to memory of 3284	4780	cmd.exe	107
PID 4780 wrote to memory of 3284	4780	cmd.exe	107
PID 4616 wrote to memory of 2488	4616	rhysida.exe	108
PID 4616 wrote to memory of 2488	4616	rhysida.exe	108
PID 2488 wrote to memory of 1904	2488	cmd.exe	109
PID 2488 wrote to memory of 1904	2488	cmd.exe	109
PID 1904 wrote to memory of 1408	1904	cmd.exe	110
PID 1904 wrote to memory of 1408	1904	cmd.exe	110
PID 4616 wrote to memory of 4008	4616	rhysida.exe	111
PID 4616 wrote to memory of 4008	4616	rhysida.exe	111
PID 4008 wrote to memory of 1828	4008	cmd.exe	112
PID 4008 wrote to memory of 1828	4008	cmd.exe	112
PID 4616 wrote to memory of 2748	4616	rhysida.exe	114
PID 4616 wrote to memory of 2748	4616	rhysida.exe	114
PID 2748 wrote to memory of 4440	2748	cmd.exe	115
PID 2748 wrote to memory of 4440	2748	cmd.exe	115
PID 4440 wrote to memory of 3656	4440	cmd.exe	116
PID 4440 wrote to memory of 3656	4440	cmd.exe	116
PID 4616 wrote to memory of 4916	4616	rhysida.exe	117
PID 4616 wrote to memory of 4916	4616	rhysida.exe	117
PID 4916 wrote to memory of 3840	4916	cmd.exe	118
PID 4916 wrote to memory of 3840	4916	cmd.exe	118
PID 3840 wrote to memory of 1468	3840	cmd.exe	119
PID 3840 wrote to memory of 1468	3840	cmd.exe	119
PID 4616 wrote to memory of 3184	4616	rhysida.exe	120
PID 4616 wrote to memory of 3184	4616	rhysida.exe	120
PID 3184 wrote to memory of 3832	3184	cmd.exe	121
PID 3184 wrote to memory of 3832	3184	cmd.exe	121
PID 3832 wrote to memory of 1956	3832	cmd.exe	122
PID 3832 wrote to memory of 1956	3832	cmd.exe	122
PID 4616 wrote to memory of 1452	4616	rhysida.exe	123
PID 4616 wrote to memory of 1452	4616	rhysida.exe	123
PID 1452 wrote to memory of 392	1452	cmd.exe	124
PID 1452 wrote to memory of 392	1452	cmd.exe	124
PID 4616 wrote to memory of 4076	4616	rhysida.exe	125
PID 4616 wrote to memory of 4076	4616	rhysida.exe	125
PID 4076 wrote to memory of 2636	4076	cmd.exe	126
PID 4076 wrote to memory of 2636	4076	cmd.exe	126
PID 2636 wrote to memory of 2724	2636	cmd.exe	127
PID 2636 wrote to memory of 2724	2636	cmd.exe	127

C:\Users\Admin\AppData\Local\Temp\rhysida.exe
"C:\Users\Admin\AppData\Local\Temp\rhysida.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:4616
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c cmd.exe /c reg delete "HKCU\Conttol Panel\Desktop" /v Wallpaper /f
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:5024
- - C:\Windows\system32\cmd.exe
    cmd.exe /c reg delete "HKCU\Conttol Panel\Desktop" /v Wallpaper /f
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:4988
  - - C:\Windows\system32\reg.exe
      reg delete "HKCU\Conttol Panel\Desktop" /v Wallpaper /f
      4⤵
      PID:3940
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c cmd.exe /c reg delete "HKCU\Conttol Panel\Desktop" /v WallpaperStyle /f
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2792
- - C:\Windows\system32\cmd.exe
    cmd.exe /c reg delete "HKCU\Conttol Panel\Desktop" /v WallpaperStyle /f
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:3192
  - - C:\Windows\system32\reg.exe
      reg delete "HKCU\Conttol Panel\Desktop" /v WallpaperStyle /f
      4⤵
      PID:4488
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c cmd.exe /c reg add "HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\ActiveDesktop" /v NoChangingWallPaper /t REG_SZ /d 1 /f
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1908
- - C:\Windows\system32\cmd.exe
    cmd.exe /c reg add "HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\ActiveDesktop" /v NoChangingWallPaper /t REG_SZ /d 1 /f
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:4780
  - - C:\Windows\system32\reg.exe
      reg add "HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\ActiveDesktop" /v NoChangingWallPaper /t REG_SZ /d 1 /f
      4⤵
      PID:3284
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c cmd.exe /c reg add "HKLM\Software\Microsoft\Windows\CurrentVersion\Policies\ActiveDesktop" /v NoChangingWallPaper /t REG_SZ /d 1 /f
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2488
- - C:\Windows\system32\cmd.exe
    cmd.exe /c reg add "HKLM\Software\Microsoft\Windows\CurrentVersion\Policies\ActiveDesktop" /v NoChangingWallPaper /t REG_SZ /d 1 /f
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1904
  - - C:\Windows\system32\reg.exe
      reg add "HKLM\Software\Microsoft\Windows\CurrentVersion\Policies\ActiveDesktop" /v NoChangingWallPaper /t REG_SZ /d 1 /f
      4⤵
      PID:1408
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c cmd.exe /c reg add "HKCU\Control Panel\Desktop" /v Wallpaper /t REG_SZ /d "C:\Users\Public\bg.jpg" /f
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4008
- - C:\Windows\system32\cmd.exe
    cmd.exe /c reg add "HKCU\Control Panel\Desktop" /v Wallpaper /t REG_SZ /d "C:\Users\Public\bg.jpg" /f
    3⤵
    PID:1828
  - - C:\Windows\system32\reg.exe
      reg add "HKCU\Control Panel\Desktop" /v Wallpaper /t REG_SZ /d "C:\Users\Public\bg.jpg" /f
      4⤵
      Sets desktop wallpaper using registry
      PID:2032
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c cmd.exe /c reg add "HKLM\Software\Microsoft\Windows\CurrentVersion\Policies\System" /v Wallpaper /t REG_SZ /d "C:\Users\Public\bg.jpg" /f
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2748
- - C:\Windows\system32\cmd.exe
    cmd.exe /c reg add "HKLM\Software\Microsoft\Windows\CurrentVersion\Policies\System" /v Wallpaper /t REG_SZ /d "C:\Users\Public\bg.jpg" /f
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:4440
  - - C:\Windows\system32\reg.exe
      reg add "HKLM\Software\Microsoft\Windows\CurrentVersion\Policies\System" /v Wallpaper /t REG_SZ /d "C:\Users\Public\bg.jpg" /f
      4⤵
      PID:3656
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c cmd.exe /c reg add "HKLM\Software\Microsoft\Windows\CurrentVersion\Policies\System" /v WallpaperStyle /t REG_SZ /d 2 /f
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4916
- - C:\Windows\system32\cmd.exe
    cmd.exe /c reg add "HKLM\Software\Microsoft\Windows\CurrentVersion\Policies\System" /v WallpaperStyle /t REG_SZ /d 2 /f
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:3840
  - - C:\Windows\system32\reg.exe
      reg add "HKLM\Software\Microsoft\Windows\CurrentVersion\Policies\System" /v WallpaperStyle /t REG_SZ /d 2 /f
      4⤵
      PID:1468
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c cmd.exe /c reg add "HKCU\Control Panel\Desktop" /v WallpaperStyle /t REG_SZ /d 2 /f
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3184
- - C:\Windows\system32\cmd.exe
    cmd.exe /c reg add "HKCU\Control Panel\Desktop" /v WallpaperStyle /t REG_SZ /d 2 /f
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:3832
  - - C:\Windows\system32\reg.exe
      reg add "HKCU\Control Panel\Desktop" /v WallpaperStyle /t REG_SZ /d 2 /f
      4⤵
      PID:1956
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c rundll32.exe user32.dll,UpdatePerUserSystemParameters
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1452
- - C:\Windows\system32\rundll32.exe
    rundll32.exe user32.dll,UpdatePerUserSystemParameters
    3⤵
    PID:392
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c cmd.exe /c start powershell.exe -WindowStyle Hidden -Command Sleep -Milliseconds 500; Remove-Item -Force -Path "C:\Users\Admin\AppData\Local\Temp\C:\Users\Admin\AppData\Local\Temp\rhysida.exe" -ErrorAction SilentlyContinue;
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4076
- - C:\Windows\system32\cmd.exe
    cmd.exe /c start powershell.exe -WindowStyle Hidden -Command Sleep -Milliseconds 500; Remove-Item -Force -Path "C:\Users\Admin\AppData\Local\Temp\C:\Users\Admin\AppData\Local\Temp\rhysida.exe" -ErrorAction SilentlyContinue;
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2636
  - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      powershell.exe -WindowStyle Hidden -Command Sleep -Milliseconds 500; Remove-Item -Force -Path "C:\Users\Admin\AppData\Local\Temp\C:\Users\Admin\AppData\Local\Temp\rhysida.exe" -ErrorAction SilentlyContinue;
      4⤵
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:2724

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Credentials in Files

T1081

Discovery

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Defacement

T1491

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_1b1enzfq.qnm.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/2724-715-0x0000023C5B0F0000-0x0000023C5B100000-memory.dmp

Filesize
64KB

Download
memory/2724-703-0x0000023C5B0B0000-0x0000023C5B0D2000-memory.dmp

Filesize
136KB

Download
memory/2724-713-0x00007FFAFA410000-0x00007FFAFAED1000-memory.dmp

Filesize
10.8MB

Download
memory/2724-714-0x0000023C5B0F0000-0x0000023C5B100000-memory.dmp

Filesize
64KB

Download
memory/2724-716-0x0000023C5B0F0000-0x0000023C5B100000-memory.dmp

Filesize
64KB

Download
memory/2724-719-0x00007FFAFA410000-0x00007FFAFAED1000-memory.dmp

Filesize
10.8MB

Download
memory/4616-699-0x0000000000400000-0x0000000000522000-memory.dmp

Filesize
1.1MB

Download
memory/4616-700-0x0000000000400000-0x0000000000522000-memory.dmp

Filesize
1.1MB

Download
memory/4616-701-0x0000000000400000-0x0000000000522000-memory.dmp

Filesize
1.1MB

Download
memory/4616-702-0x0000000000400000-0x0000000000522000-memory.dmp

Filesize
1.1MB

Download
memory/4616-698-0x0000000000400000-0x0000000000522000-memory.dmp

Filesize
1.1MB

Download
memory/4616-437-0x0000000000400000-0x0000000000522000-memory.dmp

Filesize
1.1MB

Download