rhysida | 9097ab2b2b71f3ea0cf8c9271224b6227e9aa2545ae23d4621f122bdb99c77b8

Analysis

max time kernel
121s
max time network
122s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-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 3 IoCs

resource	yara_rule
behavioral1/memory/2548-693-0x0000000000400000-0x0000000000522000-memory.dmp	family_rhysida
behavioral1/memory/2548-694-0x0000000000400000-0x0000000000522000-memory.dmp	family_rhysida
behavioral1/memory/2548-695-0x0000000000400000-0x0000000000522000-memory.dmp	family_rhysida

Rhysida
Rhysida is a ransomware that is written in C++ and discovered in 2023.
ransomware rhysida
Renames multiple (700) 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
3036	powershell.exe

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

Windows Credential Manager
T1555.004

Drops startup file 1 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Word\STARTUP\CriticalBreachDetected.pdf	9097ab2b2b71f3ea0cf8c9271224b6227e9aa2545ae23d4621f122bdb99c77b8.exe

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
2800	cmd.exe
2820	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-1-5-21-3434294380-2554721341-1919518612-1000\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
2800	cmd.exe
2820	cmd.exe

Browser Information Discovery 1 TTPs
Enumerate browser information.
discovery

Browser Information Discovery
T1217

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
3036	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3036	powershell.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 2548 wrote to memory of 1812	2548	9097ab2b2b71f3ea0cf8c9271224b6227e9aa2545ae23d4621f122bdb99c77b8.exe	33
PID 2548 wrote to memory of 1812	2548	9097ab2b2b71f3ea0cf8c9271224b6227e9aa2545ae23d4621f122bdb99c77b8.exe	33
PID 2548 wrote to memory of 1812	2548	9097ab2b2b71f3ea0cf8c9271224b6227e9aa2545ae23d4621f122bdb99c77b8.exe	33
PID 1812 wrote to memory of 1576	1812	cmd.exe	34
PID 1812 wrote to memory of 1576	1812	cmd.exe	34
PID 1812 wrote to memory of 1576	1812	cmd.exe	34
PID 1576 wrote to memory of 1588	1576	cmd.exe	35
PID 1576 wrote to memory of 1588	1576	cmd.exe	35
PID 1576 wrote to memory of 1588	1576	cmd.exe	35
PID 2548 wrote to memory of 1580	2548	9097ab2b2b71f3ea0cf8c9271224b6227e9aa2545ae23d4621f122bdb99c77b8.exe	36
PID 2548 wrote to memory of 1580	2548	9097ab2b2b71f3ea0cf8c9271224b6227e9aa2545ae23d4621f122bdb99c77b8.exe	36
PID 2548 wrote to memory of 1580	2548	9097ab2b2b71f3ea0cf8c9271224b6227e9aa2545ae23d4621f122bdb99c77b8.exe	36
PID 1580 wrote to memory of 2360	1580	cmd.exe	37
PID 1580 wrote to memory of 2360	1580	cmd.exe	37
PID 1580 wrote to memory of 2360	1580	cmd.exe	37
PID 2360 wrote to memory of 2540	2360	cmd.exe	38
PID 2360 wrote to memory of 2540	2360	cmd.exe	38
PID 2360 wrote to memory of 2540	2360	cmd.exe	38
PID 2548 wrote to memory of 2384	2548	9097ab2b2b71f3ea0cf8c9271224b6227e9aa2545ae23d4621f122bdb99c77b8.exe	39
PID 2548 wrote to memory of 2384	2548	9097ab2b2b71f3ea0cf8c9271224b6227e9aa2545ae23d4621f122bdb99c77b8.exe	39
PID 2548 wrote to memory of 2384	2548	9097ab2b2b71f3ea0cf8c9271224b6227e9aa2545ae23d4621f122bdb99c77b8.exe	39
PID 2384 wrote to memory of 1840	2384	cmd.exe	40
PID 2384 wrote to memory of 1840	2384	cmd.exe	40
PID 2384 wrote to memory of 1840	2384	cmd.exe	40
PID 1840 wrote to memory of 544	1840	cmd.exe	41
PID 1840 wrote to memory of 544	1840	cmd.exe	41
PID 1840 wrote to memory of 544	1840	cmd.exe	41
PID 2548 wrote to memory of 1296	2548	9097ab2b2b71f3ea0cf8c9271224b6227e9aa2545ae23d4621f122bdb99c77b8.exe	42
PID 2548 wrote to memory of 1296	2548	9097ab2b2b71f3ea0cf8c9271224b6227e9aa2545ae23d4621f122bdb99c77b8.exe	42
PID 2548 wrote to memory of 1296	2548	9097ab2b2b71f3ea0cf8c9271224b6227e9aa2545ae23d4621f122bdb99c77b8.exe	42
PID 1296 wrote to memory of 1808	1296	cmd.exe	43
PID 1296 wrote to memory of 1808	1296	cmd.exe	43
PID 1296 wrote to memory of 1808	1296	cmd.exe	43
PID 1808 wrote to memory of 1124	1808	cmd.exe	44
PID 1808 wrote to memory of 1124	1808	cmd.exe	44
PID 1808 wrote to memory of 1124	1808	cmd.exe	44
PID 2548 wrote to memory of 1224	2548	9097ab2b2b71f3ea0cf8c9271224b6227e9aa2545ae23d4621f122bdb99c77b8.exe	45
PID 2548 wrote to memory of 1224	2548	9097ab2b2b71f3ea0cf8c9271224b6227e9aa2545ae23d4621f122bdb99c77b8.exe	45
PID 2548 wrote to memory of 1224	2548	9097ab2b2b71f3ea0cf8c9271224b6227e9aa2545ae23d4621f122bdb99c77b8.exe	45
PID 1224 wrote to memory of 1448	1224	cmd.exe	46
PID 1224 wrote to memory of 1448	1224	cmd.exe	46
PID 1224 wrote to memory of 1448	1224	cmd.exe	46
PID 1448 wrote to memory of 1836	1448	cmd.exe	47
PID 1448 wrote to memory of 1836	1448	cmd.exe	47
PID 1448 wrote to memory of 1836	1448	cmd.exe	47
PID 2548 wrote to memory of 2788	2548	9097ab2b2b71f3ea0cf8c9271224b6227e9aa2545ae23d4621f122bdb99c77b8.exe	48
PID 2548 wrote to memory of 2788	2548	9097ab2b2b71f3ea0cf8c9271224b6227e9aa2545ae23d4621f122bdb99c77b8.exe	48
PID 2548 wrote to memory of 2788	2548	9097ab2b2b71f3ea0cf8c9271224b6227e9aa2545ae23d4621f122bdb99c77b8.exe	48
PID 2788 wrote to memory of 1160	2788	cmd.exe	49
PID 2788 wrote to memory of 1160	2788	cmd.exe	49
PID 2788 wrote to memory of 1160	2788	cmd.exe	49
PID 1160 wrote to memory of 2088	1160	cmd.exe	50
PID 1160 wrote to memory of 2088	1160	cmd.exe	50
PID 1160 wrote to memory of 2088	1160	cmd.exe	50
PID 2548 wrote to memory of 2052	2548	9097ab2b2b71f3ea0cf8c9271224b6227e9aa2545ae23d4621f122bdb99c77b8.exe	51
PID 2548 wrote to memory of 2052	2548	9097ab2b2b71f3ea0cf8c9271224b6227e9aa2545ae23d4621f122bdb99c77b8.exe	51
PID 2548 wrote to memory of 2052	2548	9097ab2b2b71f3ea0cf8c9271224b6227e9aa2545ae23d4621f122bdb99c77b8.exe	51
PID 2052 wrote to memory of 2212	2052	cmd.exe	52
PID 2052 wrote to memory of 2212	2052	cmd.exe	52
PID 2052 wrote to memory of 2212	2052	cmd.exe	52
PID 2212 wrote to memory of 2260	2212	cmd.exe	53
PID 2212 wrote to memory of 2260	2212	cmd.exe	53
PID 2212 wrote to memory of 2260	2212	cmd.exe	53
PID 2548 wrote to memory of 2744	2548	9097ab2b2b71f3ea0cf8c9271224b6227e9aa2545ae23d4621f122bdb99c77b8.exe	54

C:\Users\Admin\AppData\Local\Temp\9097ab2b2b71f3ea0cf8c9271224b6227e9aa2545ae23d4621f122bdb99c77b8.exe
"C:\Users\Admin\AppData\Local\Temp\9097ab2b2b71f3ea0cf8c9271224b6227e9aa2545ae23d4621f122bdb99c77b8.exe"
1⤵
- Drops startup file
- Suspicious use of WriteProcessMemory
PID:2548
- 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:1812
- - C:\Windows\system32\cmd.exe
    cmd.exe /c reg delete "HKCU\Conttol Panel\Desktop" /v Wallpaper /f
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1576
  - - C:\Windows\system32\reg.exe
      reg delete "HKCU\Conttol Panel\Desktop" /v Wallpaper /f
      4⤵
      PID:1588
- 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:1580
- - C:\Windows\system32\cmd.exe
    cmd.exe /c reg delete "HKCU\Conttol Panel\Desktop" /v WallpaperStyle /f
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2360
  - - C:\Windows\system32\reg.exe
      reg delete "HKCU\Conttol Panel\Desktop" /v WallpaperStyle /f
      4⤵
      PID:2540
- 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:2384
- - 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:1840
  - - C:\Windows\system32\reg.exe
      reg add "HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\ActiveDesktop" /v NoChangingWallPaper /t REG_SZ /d 1 /f
      4⤵
      PID:544
- 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:1296
- - 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:1808
  - - C:\Windows\system32\reg.exe
      reg add "HKLM\Software\Microsoft\Windows\CurrentVersion\Policies\ActiveDesktop" /v NoChangingWallPaper /t REG_SZ /d 1 /f
      4⤵
      PID:1124
- 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:1224
- - 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:1448
  - - 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:1836
- 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:2788
- - 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:1160
  - - 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:2088
- 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:2052
- - 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:2212
  - - C:\Windows\system32\reg.exe
      reg add "HKLM\Software\Microsoft\Windows\CurrentVersion\Policies\System" /v WallpaperStyle /t REG_SZ /d 2 /f
      4⤵
      PID:2260
- 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⤵
  PID:2744
- - C:\Windows\system32\cmd.exe
    cmd.exe /c reg add "HKCU\Control Panel\Desktop" /v WallpaperStyle /t REG_SZ /d 2 /f
    3⤵
    PID:2708
  - - C:\Windows\system32\reg.exe
      reg add "HKCU\Control Panel\Desktop" /v WallpaperStyle /t REG_SZ /d 2 /f
      4⤵
      PID:2516
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c rundll32.exe user32.dll,UpdatePerUserSystemParameters
  2⤵
  PID:2804
- - C:\Windows\system32\rundll32.exe
    rundll32.exe user32.dll,UpdatePerUserSystemParameters
    3⤵
    PID:2792
- 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
  PID:2800
- - 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
    PID:2820
  - - 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:3036

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

Replay Monitor

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Downloads

memory/2548-693-0x0000000000400000-0x0000000000522000-memory.dmp

Filesize
1.1MB

Download
memory/2548-694-0x0000000000400000-0x0000000000522000-memory.dmp

Filesize
1.1MB

Download
memory/2548-695-0x0000000000400000-0x0000000000522000-memory.dmp

Filesize
1.1MB

Download
memory/3036-700-0x000000001B8D0000-0x000000001BBB2000-memory.dmp

Filesize
2.9MB

Download
memory/3036-701-0x0000000001EF0000-0x0000000001EF8000-memory.dmp

Filesize
32KB

Download