rhysida | 687459d587df273184469f7e707c0e5db8fe4e3d4b15756d666891127851680b

Resubmissions

18/09/2024, 11:32

240918-nnb8pazajl 10

19/11/2023, 08:48

19/11/2023, 08:33

19/11/2023, 08:31

16/11/2023, 13:30

Analysis

max time kernel
1350s
max time network
1141s
platform
windows10-2004_x64
resource
win10v2004-20231023-en
resource tags

arch:x64arch:x86image:win10v2004-20231023-enlocale:en-usos:windows10-2004-x64system
submitted
19/11/2023, 08:33

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Report Analysis Logs

General

Target

a864282fea5a536510ae86c77ce46f7827687783628e4f2ceb5bf2c41b8cd3c6.exe
Size

1.2MB
MD5

0c8e88877383ccd23a755f429006b437
SHA1

69b3d913a3967153d1e91ba1a31ebed839b297ed
SHA256

a864282fea5a536510ae86c77ce46f7827687783628e4f2ceb5bf2c41b8cd3c6
SHA512

ba5296a84b7107b293d1afd4752157edaa1a3f1059685ecad2ddea9b9221ee9c8092ce5cae6f2f6a4866e25ca0bf66dd3fbc0786b2a26cb708d2cd536dd85041
SSDEEP

24576:utP7hdO1s6Skscec1SgnyN9HPFCCNhQI6GOfaFVIVrYwcMavDiZn3m75/J7:gLO1qkscec0gnyN9HPFCCNSI6GOfaFVp

Score

10^/10

rhysida ransomware spyware stealer

Malware Config

Signatures

Detect Rhysida ransomware 6 IoCs

resource	yara_rule
behavioral2/memory/2888-281-0x0000000000400000-0x0000000000522000-memory.dmp	family_rhysida
behavioral2/memory/2888-565-0x0000000000400000-0x0000000000522000-memory.dmp	family_rhysida
behavioral2/memory/2888-566-0x0000000000400000-0x0000000000522000-memory.dmp	family_rhysida
behavioral2/memory/2888-567-0x0000000000400000-0x0000000000522000-memory.dmp	family_rhysida
behavioral2/memory/2888-568-0x0000000000400000-0x0000000000522000-memory.dmp	family_rhysida
behavioral2/memory/2888-569-0x0000000000400000-0x0000000000522000-memory.dmp	family_rhysida

Rhysida
Rhysida is a ransomware that is written in C++ and discovered in 2023.
ransomware rhysida
Renames multiple (1493) 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
T1552.001

Sets desktop wallpaper using registry 2 TTPs 1 IoCs

ransomware

Defacement

T1491

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3125601242-331447593-1512828465-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Public\\bg.jpg"	reg.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1848	powershell.exe
1848	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1848	powershell.exe

Suspicious use of WriteProcessMemory 58 IoCs

description	pid	Process	procid_target
PID 2888 wrote to memory of 4008	2888	a864282fea5a536510ae86c77ce46f7827687783628e4f2ceb5bf2c41b8cd3c6.exe	108
PID 2888 wrote to memory of 4008	2888	a864282fea5a536510ae86c77ce46f7827687783628e4f2ceb5bf2c41b8cd3c6.exe	108
PID 4008 wrote to memory of 2816	4008	cmd.exe	109
PID 4008 wrote to memory of 2816	4008	cmd.exe	109
PID 2816 wrote to memory of 1480	2816	cmd.exe	110
PID 2816 wrote to memory of 1480	2816	cmd.exe	110
PID 2888 wrote to memory of 3888	2888	a864282fea5a536510ae86c77ce46f7827687783628e4f2ceb5bf2c41b8cd3c6.exe	111
PID 2888 wrote to memory of 3888	2888	a864282fea5a536510ae86c77ce46f7827687783628e4f2ceb5bf2c41b8cd3c6.exe	111
PID 3888 wrote to memory of 940	3888	cmd.exe	112
PID 3888 wrote to memory of 940	3888	cmd.exe	112
PID 940 wrote to memory of 3276	940	cmd.exe	113
PID 940 wrote to memory of 3276	940	cmd.exe	113
PID 2888 wrote to memory of 3012	2888	a864282fea5a536510ae86c77ce46f7827687783628e4f2ceb5bf2c41b8cd3c6.exe	114
PID 2888 wrote to memory of 3012	2888	a864282fea5a536510ae86c77ce46f7827687783628e4f2ceb5bf2c41b8cd3c6.exe	114
PID 3012 wrote to memory of 1828	3012	cmd.exe	115
PID 3012 wrote to memory of 1828	3012	cmd.exe	115
PID 1828 wrote to memory of 2164	1828	cmd.exe	116
PID 1828 wrote to memory of 2164	1828	cmd.exe	116
PID 2888 wrote to memory of 2864	2888	a864282fea5a536510ae86c77ce46f7827687783628e4f2ceb5bf2c41b8cd3c6.exe	117
PID 2888 wrote to memory of 2864	2888	a864282fea5a536510ae86c77ce46f7827687783628e4f2ceb5bf2c41b8cd3c6.exe	117
PID 2864 wrote to memory of 616	2864	cmd.exe	118
PID 2864 wrote to memory of 616	2864	cmd.exe	118
PID 616 wrote to memory of 2616	616	cmd.exe	119
PID 616 wrote to memory of 2616	616	cmd.exe	119
PID 2888 wrote to memory of 3972	2888	a864282fea5a536510ae86c77ce46f7827687783628e4f2ceb5bf2c41b8cd3c6.exe	120
PID 2888 wrote to memory of 3972	2888	a864282fea5a536510ae86c77ce46f7827687783628e4f2ceb5bf2c41b8cd3c6.exe	120
PID 3972 wrote to memory of 3272	3972	cmd.exe	121
PID 3972 wrote to memory of 3272	3972	cmd.exe	121
PID 3272 wrote to memory of 4792	3272	cmd.exe	122
PID 3272 wrote to memory of 4792	3272	cmd.exe	122
PID 2888 wrote to memory of 952	2888	a864282fea5a536510ae86c77ce46f7827687783628e4f2ceb5bf2c41b8cd3c6.exe	123
PID 2888 wrote to memory of 952	2888	a864282fea5a536510ae86c77ce46f7827687783628e4f2ceb5bf2c41b8cd3c6.exe	123
PID 952 wrote to memory of 1356	952	cmd.exe	124
PID 952 wrote to memory of 1356	952	cmd.exe	124
PID 1356 wrote to memory of 1428	1356	cmd.exe	125
PID 1356 wrote to memory of 1428	1356	cmd.exe	125
PID 2888 wrote to memory of 3876	2888	a864282fea5a536510ae86c77ce46f7827687783628e4f2ceb5bf2c41b8cd3c6.exe	126
PID 2888 wrote to memory of 3876	2888	a864282fea5a536510ae86c77ce46f7827687783628e4f2ceb5bf2c41b8cd3c6.exe	126
PID 3876 wrote to memory of 3776	3876	cmd.exe	127
PID 3876 wrote to memory of 3776	3876	cmd.exe	127
PID 3776 wrote to memory of 2332	3776	cmd.exe	128
PID 3776 wrote to memory of 2332	3776	cmd.exe	128
PID 2888 wrote to memory of 2488	2888	a864282fea5a536510ae86c77ce46f7827687783628e4f2ceb5bf2c41b8cd3c6.exe	129
PID 2888 wrote to memory of 2488	2888	a864282fea5a536510ae86c77ce46f7827687783628e4f2ceb5bf2c41b8cd3c6.exe	129
PID 2488 wrote to memory of 4644	2488	cmd.exe	130
PID 2488 wrote to memory of 4644	2488	cmd.exe	130
PID 4644 wrote to memory of 4440	4644	cmd.exe	131
PID 4644 wrote to memory of 4440	4644	cmd.exe	131
PID 2888 wrote to memory of 4424	2888	a864282fea5a536510ae86c77ce46f7827687783628e4f2ceb5bf2c41b8cd3c6.exe	132
PID 2888 wrote to memory of 4424	2888	a864282fea5a536510ae86c77ce46f7827687783628e4f2ceb5bf2c41b8cd3c6.exe	132
PID 4424 wrote to memory of 4668	4424	cmd.exe	133
PID 4424 wrote to memory of 4668	4424	cmd.exe	133
PID 2888 wrote to memory of 3016	2888	a864282fea5a536510ae86c77ce46f7827687783628e4f2ceb5bf2c41b8cd3c6.exe	134
PID 2888 wrote to memory of 3016	2888	a864282fea5a536510ae86c77ce46f7827687783628e4f2ceb5bf2c41b8cd3c6.exe	134
PID 3016 wrote to memory of 3448	3016	cmd.exe	135
PID 3016 wrote to memory of 3448	3016	cmd.exe	135
PID 3448 wrote to memory of 1848	3448	cmd.exe	136
PID 3448 wrote to memory of 1848	3448	cmd.exe	136

C:\Users\Admin\AppData\Local\Temp\a864282fea5a536510ae86c77ce46f7827687783628e4f2ceb5bf2c41b8cd3c6.exe
"C:\Users\Admin\AppData\Local\Temp\a864282fea5a536510ae86c77ce46f7827687783628e4f2ceb5bf2c41b8cd3c6.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2888
- 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:4008
- - C:\Windows\system32\cmd.exe
    cmd.exe /c reg delete "HKCU\Conttol Panel\Desktop" /v Wallpaper /f
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2816
  - - C:\Windows\system32\reg.exe
      reg delete "HKCU\Conttol Panel\Desktop" /v Wallpaper /f
      4⤵
      PID:1480
- 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:3888
- - C:\Windows\system32\cmd.exe
    cmd.exe /c reg delete "HKCU\Conttol Panel\Desktop" /v WallpaperStyle /f
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:940
  - - C:\Windows\system32\reg.exe
      reg delete "HKCU\Conttol Panel\Desktop" /v WallpaperStyle /f
      4⤵
      PID:3276
- 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:3012
- - 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:1828
  - - C:\Windows\system32\reg.exe
      reg add "HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\ActiveDesktop" /v NoChangingWallPaper /t REG_SZ /d 1 /f
      4⤵
      PID:2164
- 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:2864
- - 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:616
  - - C:\Windows\system32\reg.exe
      reg add "HKLM\Software\Microsoft\Windows\CurrentVersion\Policies\ActiveDesktop" /v NoChangingWallPaper /t REG_SZ /d 1 /f
      4⤵
      PID:2616
- 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:3972
- - 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⤵
    - Suspicious use of WriteProcessMemory
    PID:3272
  - - 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:4792
- 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:952
- - 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:1356
  - - 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:1428
- 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:3876
- - 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:3776
  - - C:\Windows\system32\reg.exe
      reg add "HKLM\Software\Microsoft\Windows\CurrentVersion\Policies\System" /v WallpaperStyle /t REG_SZ /d 2 /f
      4⤵
      PID:2332
- 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:2488
- - 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:4644
  - - C:\Windows\system32\reg.exe
      reg add "HKCU\Control Panel\Desktop" /v WallpaperStyle /t REG_SZ /d 2 /f
      4⤵
      PID:4440
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c rundll32.exe user32.dll,UpdatePerUserSystemParameters
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4424
- - C:\Windows\system32\rundll32.exe
    rundll32.exe user32.dll,UpdatePerUserSystemParameters
    3⤵
    PID:4668
- 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\a864282fea5a536510ae86c77ce46f7827687783628e4f2ceb5bf2c41b8cd3c6.exe" -ErrorAction SilentlyContinue;
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3016
- - 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\a864282fea5a536510ae86c77ce46f7827687783628e4f2ceb5bf2c41b8cd3c6.exe" -ErrorAction SilentlyContinue;
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:3448
  - - 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\a864282fea5a536510ae86c77ce46f7827687783628e4f2ceb5bf2c41b8cd3c6.exe" -ErrorAction SilentlyContinue;
      4⤵
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:1848

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

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_nuxsl5j1.mam.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1848-579-0x000001F2EB930000-0x000001F2EB952000-memory.dmp

Filesize
136KB

Download
memory/1848-580-0x00007FFFA14B0000-0x00007FFFA1F71000-memory.dmp

Filesize
10.8MB

Download
memory/1848-581-0x000001F2EB920000-0x000001F2EB930000-memory.dmp

Filesize
64KB

Download
memory/1848-582-0x000001F2EB920000-0x000001F2EB930000-memory.dmp

Filesize
64KB

Download
memory/1848-585-0x00007FFFA14B0000-0x00007FFFA1F71000-memory.dmp

Filesize
10.8MB

Download
memory/2888-281-0x0000000000400000-0x0000000000522000-memory.dmp

Filesize
1.1MB

Download
memory/2888-565-0x0000000000400000-0x0000000000522000-memory.dmp

Filesize
1.1MB

Download
memory/2888-566-0x0000000000400000-0x0000000000522000-memory.dmp

Filesize
1.1MB

Download
memory/2888-567-0x0000000000400000-0x0000000000522000-memory.dmp

Filesize
1.1MB

Download
memory/2888-568-0x0000000000400000-0x0000000000522000-memory.dmp

Filesize
1.1MB

Download
memory/2888-569-0x0000000000400000-0x0000000000522000-memory.dmp

Filesize
1.1MB

Download