rhysida | 9097ab2b2b71f3ea0cf8c9271224b6227e9aa2545ae23d4621f122bdb99c77b8

Analysis

max time kernel
95s
max time network
96s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
02/10/2024, 14:56

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General

Target

9097ab2b2b71f3ea0cf8c9271224b6227e9aa2545ae23d4621f122bdb99c77b8.exe
Size

1.2MB
MD5

54416fc42afa9b09ea7e8d8e318f4891
SHA1

8c924431049191e763a14503517a9583f070fdeb
SHA256

9097ab2b2b71f3ea0cf8c9271224b6227e9aa2545ae23d4621f122bdb99c77b8
SHA512

1ce45889054522a9277ebbd012f20dfe4039feafe5e25a0c9c5293dce867aa06e5550606191a8ce876a6307ffbdba3af41013f1c546cf3c4560827b99a98873a
SSDEEP

24576:RtP7hdO1s6Ekgcec1SgnyN9HPFCCNhQI6GOfaFVIVrYwcMavDiZn3m75/J7:XLO18kgcec0gnyN9HPFCCNSI6GOfaFVp

Score

10^/10

rhysida credential_access defense_evasion discovery execution ransomware spyware stealer

Malware Config

Signatures

Detect Rhysida ransomware 4 IoCs

resource	yara_rule
behavioral2/memory/2904-494-0x0000000000400000-0x0000000000522000-memory.dmp	family_rhysida
behavioral2/memory/2904-495-0x0000000000400000-0x0000000000522000-memory.dmp	family_rhysida
behavioral2/memory/2904-496-0x0000000000400000-0x0000000000522000-memory.dmp	family_rhysida
behavioral2/memory/2904-497-0x0000000000400000-0x0000000000522000-memory.dmp	family_rhysida

Rhysida
Rhysida is a ransomware that is written in C++ and discovered in 2023.
ransomware rhysida
Renames multiple (1702) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
ransomware

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell and hide display window.

execution

PowerShell

T1059.001

pid	Process
3608	powershell.exe

Credentials from Password Stores: Windows Credential Manager 1 TTPs
Suspicious access to Credentials History.
credential_access stealer

Windows Credential Manager
T1555.004
Reads user/profile data of web browsers 3 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

Credentials from Web Browsers
T1555.003

Hide Artifacts: Hidden Window 1 TTPs 2 IoCs

Windows that would typically be displayed when an application carries out an operation can be hidden.

defense_evasion

Hidden Window

T1564.003

pid	Process
4328	cmd.exe
1924	cmd.exe

Indicator Removal: File Deletion 1 TTPs
Adversaries may delete files left behind by the actions of their intrusion activity.
defense_evasion

File Deletion
T1070.004

Sets desktop wallpaper using registry 2 TTPs 1 IoCs

ransomware

Defacement

T1491

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1302416131-1437503476-2806442725-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Public\\bg.jpg"	reg.exe

Hide Artifacts: Ignore Process Interrupts 1 TTPs 2 IoCs

Command interpreters often include specific commands/flags that ignore errors and other hangups.

defense_evasion

Ignore Process Interrupts

T1564.011

pid	Process
4328	cmd.exe
1924	cmd.exe

Browser Information Discovery 1 TTPs
Enumerate browser information.
discovery

Browser Information Discovery
T1217

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3608	powershell.exe
3608	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3608	powershell.exe

Suspicious use of WriteProcessMemory 56 IoCs

description	pid	Process	procid_target
PID 2904 wrote to memory of 4764	2904	9097ab2b2b71f3ea0cf8c9271224b6227e9aa2545ae23d4621f122bdb99c77b8.exe	92
PID 2904 wrote to memory of 4764	2904	9097ab2b2b71f3ea0cf8c9271224b6227e9aa2545ae23d4621f122bdb99c77b8.exe	92
PID 4764 wrote to memory of 2112	4764	cmd.exe	93
PID 4764 wrote to memory of 2112	4764	cmd.exe	93
PID 2112 wrote to memory of 3224	2112	cmd.exe	94
PID 2112 wrote to memory of 3224	2112	cmd.exe	94
PID 2904 wrote to memory of 3368	2904	9097ab2b2b71f3ea0cf8c9271224b6227e9aa2545ae23d4621f122bdb99c77b8.exe	95
PID 2904 wrote to memory of 3368	2904	9097ab2b2b71f3ea0cf8c9271224b6227e9aa2545ae23d4621f122bdb99c77b8.exe	95
PID 3368 wrote to memory of 4960	3368	cmd.exe	96
PID 3368 wrote to memory of 4960	3368	cmd.exe	96
PID 4960 wrote to memory of 4816	4960	cmd.exe	97
PID 4960 wrote to memory of 4816	4960	cmd.exe	97
PID 2904 wrote to memory of 3576	2904	9097ab2b2b71f3ea0cf8c9271224b6227e9aa2545ae23d4621f122bdb99c77b8.exe	98
PID 2904 wrote to memory of 3576	2904	9097ab2b2b71f3ea0cf8c9271224b6227e9aa2545ae23d4621f122bdb99c77b8.exe	98
PID 3576 wrote to memory of 4916	3576	cmd.exe	99
PID 3576 wrote to memory of 4916	3576	cmd.exe	99
PID 4916 wrote to memory of 4416	4916	cmd.exe	100
PID 4916 wrote to memory of 4416	4916	cmd.exe	100
PID 2904 wrote to memory of 864	2904	9097ab2b2b71f3ea0cf8c9271224b6227e9aa2545ae23d4621f122bdb99c77b8.exe	101
PID 2904 wrote to memory of 864	2904	9097ab2b2b71f3ea0cf8c9271224b6227e9aa2545ae23d4621f122bdb99c77b8.exe	101
PID 864 wrote to memory of 3520	864	cmd.exe	102
PID 864 wrote to memory of 3520	864	cmd.exe	102
PID 3520 wrote to memory of 1084	3520	cmd.exe	103
PID 3520 wrote to memory of 1084	3520	cmd.exe	103
PID 2904 wrote to memory of 3156	2904	9097ab2b2b71f3ea0cf8c9271224b6227e9aa2545ae23d4621f122bdb99c77b8.exe	104
PID 2904 wrote to memory of 3156	2904	9097ab2b2b71f3ea0cf8c9271224b6227e9aa2545ae23d4621f122bdb99c77b8.exe	104
PID 3156 wrote to memory of 400	3156	cmd.exe	105
PID 3156 wrote to memory of 400	3156	cmd.exe	105
PID 400 wrote to memory of 4712	400	cmd.exe	106
PID 400 wrote to memory of 4712	400	cmd.exe	106
PID 2904 wrote to memory of 3036	2904	9097ab2b2b71f3ea0cf8c9271224b6227e9aa2545ae23d4621f122bdb99c77b8.exe	107
PID 2904 wrote to memory of 3036	2904	9097ab2b2b71f3ea0cf8c9271224b6227e9aa2545ae23d4621f122bdb99c77b8.exe	107
PID 3036 wrote to memory of 3508	3036	cmd.exe	108
PID 3036 wrote to memory of 3508	3036	cmd.exe	108
PID 3508 wrote to memory of 2084	3508	cmd.exe	109
PID 3508 wrote to memory of 2084	3508	cmd.exe	109
PID 2904 wrote to memory of 2136	2904	9097ab2b2b71f3ea0cf8c9271224b6227e9aa2545ae23d4621f122bdb99c77b8.exe	110
PID 2904 wrote to memory of 2136	2904	9097ab2b2b71f3ea0cf8c9271224b6227e9aa2545ae23d4621f122bdb99c77b8.exe	110
PID 2136 wrote to memory of 2404	2136	cmd.exe	111
PID 2136 wrote to memory of 2404	2136	cmd.exe	111
PID 2404 wrote to memory of 4132	2404	cmd.exe	112
PID 2404 wrote to memory of 4132	2404	cmd.exe	112
PID 2904 wrote to memory of 1356	2904	9097ab2b2b71f3ea0cf8c9271224b6227e9aa2545ae23d4621f122bdb99c77b8.exe	113
PID 2904 wrote to memory of 1356	2904	9097ab2b2b71f3ea0cf8c9271224b6227e9aa2545ae23d4621f122bdb99c77b8.exe	113
PID 1356 wrote to memory of 4876	1356	cmd.exe	114
PID 1356 wrote to memory of 4876	1356	cmd.exe	114
PID 4876 wrote to memory of 2208	4876	cmd.exe	115
PID 4876 wrote to memory of 2208	4876	cmd.exe	115
PID 2904 wrote to memory of 4016	2904	9097ab2b2b71f3ea0cf8c9271224b6227e9aa2545ae23d4621f122bdb99c77b8.exe	116
PID 2904 wrote to memory of 4016	2904	9097ab2b2b71f3ea0cf8c9271224b6227e9aa2545ae23d4621f122bdb99c77b8.exe	116
PID 2904 wrote to memory of 4328	2904	9097ab2b2b71f3ea0cf8c9271224b6227e9aa2545ae23d4621f122bdb99c77b8.exe	118
PID 2904 wrote to memory of 4328	2904	9097ab2b2b71f3ea0cf8c9271224b6227e9aa2545ae23d4621f122bdb99c77b8.exe	118
PID 4328 wrote to memory of 1924	4328	cmd.exe	119
PID 4328 wrote to memory of 1924	4328	cmd.exe	119
PID 1924 wrote to memory of 3608	1924	cmd.exe	120
PID 1924 wrote to memory of 3608	1924	cmd.exe	120

C:\Users\Admin\AppData\Local\Temp\9097ab2b2b71f3ea0cf8c9271224b6227e9aa2545ae23d4621f122bdb99c77b8.exe
"C:\Users\Admin\AppData\Local\Temp\9097ab2b2b71f3ea0cf8c9271224b6227e9aa2545ae23d4621f122bdb99c77b8.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2904
- 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:4764
- - C:\Windows\system32\cmd.exe
    cmd.exe /c reg delete "HKCU\Conttol Panel\Desktop" /v Wallpaper /f
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2112
  - - C:\Windows\system32\reg.exe
      reg delete "HKCU\Conttol Panel\Desktop" /v Wallpaper /f
      4⤵
      PID:3224
- 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:3368
- - C:\Windows\system32\cmd.exe
    cmd.exe /c reg delete "HKCU\Conttol Panel\Desktop" /v WallpaperStyle /f
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:4960
  - - C:\Windows\system32\reg.exe
      reg delete "HKCU\Conttol Panel\Desktop" /v WallpaperStyle /f
      4⤵
      PID:4816
- 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:3576
- - 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:4916
  - - C:\Windows\system32\reg.exe
      reg add "HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\ActiveDesktop" /v NoChangingWallPaper /t REG_SZ /d 1 /f
      4⤵
      PID:4416
- 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:864
- - 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:3520
  - - C:\Windows\system32\reg.exe
      reg add "HKLM\Software\Microsoft\Windows\CurrentVersion\Policies\ActiveDesktop" /v NoChangingWallPaper /t REG_SZ /d 1 /f
      4⤵
      PID:1084
- 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:3156
- - 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:400
  - - 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:4712
- 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:3036
- - 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:3508
  - - 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:2084
- 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:2136
- - 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:2404
  - - C:\Windows\system32\reg.exe
      reg add "HKLM\Software\Microsoft\Windows\CurrentVersion\Policies\System" /v WallpaperStyle /t REG_SZ /d 2 /f
      4⤵
      PID:4132
- 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:1356
- - 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:4876
  - - C:\Windows\system32\reg.exe
      reg add "HKCU\Control Panel\Desktop" /v WallpaperStyle /t REG_SZ /d 2 /f
      4⤵
      PID:2208
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c rundll32.exe user32.dll,UpdatePerUserSystemParameters
  2⤵
  PID:4016
- - C:\Windows\system32\rundll32.exe
    rundll32.exe user32.dll,UpdatePerUserSystemParameters
    3⤵
    PID:1152
- 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\9097ab2b2b71f3ea0cf8c9271224b6227e9aa2545ae23d4621f122bdb99c77b8.exe" -ErrorAction SilentlyContinue;
  2⤵
  - Hide Artifacts: Hidden Window
  - Hide Artifacts: Ignore Process Interrupts
  - Suspicious use of WriteProcessMemory
  PID:4328
- - 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\9097ab2b2b71f3ea0cf8c9271224b6227e9aa2545ae23d4621f122bdb99c77b8.exe" -ErrorAction SilentlyContinue;
    3⤵
    - Hide Artifacts: Hidden Window
    - Hide Artifacts: Ignore Process Interrupts
    - Suspicious use of WriteProcessMemory
    PID:1924
  - - 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\9097ab2b2b71f3ea0cf8c9271224b6227e9aa2545ae23d4621f122bdb99c77b8.exe" -ErrorAction SilentlyContinue;
      4⤵
      Command and Scripting Interpreter: PowerShell
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:3608

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

Hide Artifacts

T1564

Hidden Window

T1564.003

Ignore Process Interrupts

T1564.011

Indicator Removal

T1070

File Deletion

T1070.004

Modify Registry

T1112

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Windows Credential Manager

T1555.004

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Browser Information Discovery

T1217

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Defacement

T1491

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Downloads

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ac4w3wia.yh0.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/2904-494-0x0000000000400000-0x0000000000522000-memory.dmp

Filesize
1.1MB

Download
memory/2904-495-0x0000000000400000-0x0000000000522000-memory.dmp

Filesize
1.1MB

Download
memory/2904-496-0x0000000000400000-0x0000000000522000-memory.dmp

Filesize
1.1MB

Download
memory/2904-497-0x0000000000400000-0x0000000000522000-memory.dmp

Filesize
1.1MB

Download
memory/3608-498-0x000001971FB20000-0x000001971FB42000-memory.dmp

Filesize
136KB

Download