rhysida | 687459d587df273184469f7e707c0e5db8fe4e3d4b15756d666891127851680b

Analysis

max time kernel
96s
max time network
98s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
18/09/2024, 11:43

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General

Target

a864282fea5a536510ae86c77ce46f7827687783628e4f2ceb5bf2c41b8cd3c6.exe
Size

1.2MB
MD5

0c8e88877383ccd23a755f429006b437
SHA1

69b3d913a3967153d1e91ba1a31ebed839b297ed
SHA256

a864282fea5a536510ae86c77ce46f7827687783628e4f2ceb5bf2c41b8cd3c6
SHA512

ba5296a84b7107b293d1afd4752157edaa1a3f1059685ecad2ddea9b9221ee9c8092ce5cae6f2f6a4866e25ca0bf66dd3fbc0786b2a26cb708d2cd536dd85041
SSDEEP

24576:utP7hdO1s6Skscec1SgnyN9HPFCCNhQI6GOfaFVIVrYwcMavDiZn3m75/J7:gLO1qkscec0gnyN9HPFCCNSI6GOfaFVp

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/4092-495-0x0000000000400000-0x0000000000522000-memory.dmp	family_rhysida
behavioral2/memory/4092-496-0x0000000000400000-0x0000000000522000-memory.dmp	family_rhysida
behavioral2/memory/4092-497-0x0000000000400000-0x0000000000522000-memory.dmp	family_rhysida
behavioral2/memory/4092-498-0x0000000000400000-0x0000000000522000-memory.dmp	family_rhysida

Rhysida
Rhysida is a ransomware that is written in C++ and discovered in 2023.
ransomware rhysida
Credentials from Password Stores: Credentials from Web Browsers 1 TTPs
Malicious Access or copy of Web Browser Credential store.
credential_access stealer

Credentials from Web Browsers
T1555.003
Renames multiple (1769) 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
376	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 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

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
548	cmd.exe
1528	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-1-5-21-945322488-2060912225-3527527000-1000\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
548	cmd.exe
1528	cmd.exe

Browser Information Discovery 1 TTPs
Enumerate browser information.
discovery

Browser Information Discovery
T1217

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
376	powershell.exe
376	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	376	powershell.exe

Suspicious use of WriteProcessMemory 58 IoCs

description	pid	Process	procid_target
PID 4092 wrote to memory of 2316	4092	a864282fea5a536510ae86c77ce46f7827687783628e4f2ceb5bf2c41b8cd3c6.exe	92
PID 4092 wrote to memory of 2316	4092	a864282fea5a536510ae86c77ce46f7827687783628e4f2ceb5bf2c41b8cd3c6.exe	92
PID 2316 wrote to memory of 5028	2316	cmd.exe	93
PID 2316 wrote to memory of 5028	2316	cmd.exe	93
PID 5028 wrote to memory of 4128	5028	cmd.exe	94
PID 5028 wrote to memory of 4128	5028	cmd.exe	94
PID 4092 wrote to memory of 968	4092	a864282fea5a536510ae86c77ce46f7827687783628e4f2ceb5bf2c41b8cd3c6.exe	95
PID 4092 wrote to memory of 968	4092	a864282fea5a536510ae86c77ce46f7827687783628e4f2ceb5bf2c41b8cd3c6.exe	95
PID 968 wrote to memory of 1352	968	cmd.exe	96
PID 968 wrote to memory of 1352	968	cmd.exe	96
PID 1352 wrote to memory of 3968	1352	cmd.exe	97
PID 1352 wrote to memory of 3968	1352	cmd.exe	97
PID 4092 wrote to memory of 1820	4092	a864282fea5a536510ae86c77ce46f7827687783628e4f2ceb5bf2c41b8cd3c6.exe	98
PID 4092 wrote to memory of 1820	4092	a864282fea5a536510ae86c77ce46f7827687783628e4f2ceb5bf2c41b8cd3c6.exe	98
PID 1820 wrote to memory of 3848	1820	cmd.exe	99
PID 1820 wrote to memory of 3848	1820	cmd.exe	99
PID 3848 wrote to memory of 1560	3848	cmd.exe	100
PID 3848 wrote to memory of 1560	3848	cmd.exe	100
PID 4092 wrote to memory of 4364	4092	a864282fea5a536510ae86c77ce46f7827687783628e4f2ceb5bf2c41b8cd3c6.exe	101
PID 4092 wrote to memory of 4364	4092	a864282fea5a536510ae86c77ce46f7827687783628e4f2ceb5bf2c41b8cd3c6.exe	101
PID 4364 wrote to memory of 1636	4364	cmd.exe	102
PID 4364 wrote to memory of 1636	4364	cmd.exe	102
PID 1636 wrote to memory of 3788	1636	cmd.exe	103
PID 1636 wrote to memory of 3788	1636	cmd.exe	103
PID 4092 wrote to memory of 1816	4092	a864282fea5a536510ae86c77ce46f7827687783628e4f2ceb5bf2c41b8cd3c6.exe	104
PID 4092 wrote to memory of 1816	4092	a864282fea5a536510ae86c77ce46f7827687783628e4f2ceb5bf2c41b8cd3c6.exe	104
PID 1816 wrote to memory of 3628	1816	cmd.exe	105
PID 1816 wrote to memory of 3628	1816	cmd.exe	105
PID 3628 wrote to memory of 5084	3628	cmd.exe	106
PID 3628 wrote to memory of 5084	3628	cmd.exe	106
PID 4092 wrote to memory of 1112	4092	a864282fea5a536510ae86c77ce46f7827687783628e4f2ceb5bf2c41b8cd3c6.exe	107
PID 4092 wrote to memory of 1112	4092	a864282fea5a536510ae86c77ce46f7827687783628e4f2ceb5bf2c41b8cd3c6.exe	107
PID 1112 wrote to memory of 3696	1112	cmd.exe	108
PID 1112 wrote to memory of 3696	1112	cmd.exe	108
PID 3696 wrote to memory of 4984	3696	cmd.exe	109
PID 3696 wrote to memory of 4984	3696	cmd.exe	109
PID 4092 wrote to memory of 4416	4092	a864282fea5a536510ae86c77ce46f7827687783628e4f2ceb5bf2c41b8cd3c6.exe	110
PID 4092 wrote to memory of 4416	4092	a864282fea5a536510ae86c77ce46f7827687783628e4f2ceb5bf2c41b8cd3c6.exe	110
PID 4416 wrote to memory of 636	4416	cmd.exe	111
PID 4416 wrote to memory of 636	4416	cmd.exe	111
PID 636 wrote to memory of 2908	636	cmd.exe	112
PID 636 wrote to memory of 2908	636	cmd.exe	112
PID 4092 wrote to memory of 3960	4092	a864282fea5a536510ae86c77ce46f7827687783628e4f2ceb5bf2c41b8cd3c6.exe	113
PID 4092 wrote to memory of 3960	4092	a864282fea5a536510ae86c77ce46f7827687783628e4f2ceb5bf2c41b8cd3c6.exe	113
PID 3960 wrote to memory of 4664	3960	cmd.exe	114
PID 3960 wrote to memory of 4664	3960	cmd.exe	114
PID 4664 wrote to memory of 2828	4664	cmd.exe	115
PID 4664 wrote to memory of 2828	4664	cmd.exe	115
PID 4092 wrote to memory of 4488	4092	a864282fea5a536510ae86c77ce46f7827687783628e4f2ceb5bf2c41b8cd3c6.exe	116
PID 4092 wrote to memory of 4488	4092	a864282fea5a536510ae86c77ce46f7827687783628e4f2ceb5bf2c41b8cd3c6.exe	116
PID 4488 wrote to memory of 3748	4488	cmd.exe	117
PID 4488 wrote to memory of 3748	4488	cmd.exe	117
PID 4092 wrote to memory of 548	4092	a864282fea5a536510ae86c77ce46f7827687783628e4f2ceb5bf2c41b8cd3c6.exe	118
PID 4092 wrote to memory of 548	4092	a864282fea5a536510ae86c77ce46f7827687783628e4f2ceb5bf2c41b8cd3c6.exe	118
PID 548 wrote to memory of 1528	548	cmd.exe	119
PID 548 wrote to memory of 1528	548	cmd.exe	119
PID 1528 wrote to memory of 376	1528	cmd.exe	120
PID 1528 wrote to memory of 376	1528	cmd.exe	120

C:\Users\Admin\AppData\Local\Temp\a864282fea5a536510ae86c77ce46f7827687783628e4f2ceb5bf2c41b8cd3c6.exe
"C:\Users\Admin\AppData\Local\Temp\a864282fea5a536510ae86c77ce46f7827687783628e4f2ceb5bf2c41b8cd3c6.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:4092
- 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:2316
- - C:\Windows\system32\cmd.exe
    cmd.exe /c reg delete "HKCU\Conttol Panel\Desktop" /v Wallpaper /f
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:5028
  - - C:\Windows\system32\reg.exe
      reg delete "HKCU\Conttol Panel\Desktop" /v Wallpaper /f
      4⤵
      PID:4128
- 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:968
- - C:\Windows\system32\cmd.exe
    cmd.exe /c reg delete "HKCU\Conttol Panel\Desktop" /v WallpaperStyle /f
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1352
  - - C:\Windows\system32\reg.exe
      reg delete "HKCU\Conttol Panel\Desktop" /v WallpaperStyle /f
      4⤵
      PID:3968
- 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:1820
- - 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:3848
  - - C:\Windows\system32\reg.exe
      reg add "HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\ActiveDesktop" /v NoChangingWallPaper /t REG_SZ /d 1 /f
      4⤵
      PID:1560
- 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:4364
- - 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:1636
  - - C:\Windows\system32\reg.exe
      reg add "HKLM\Software\Microsoft\Windows\CurrentVersion\Policies\ActiveDesktop" /v NoChangingWallPaper /t REG_SZ /d 1 /f
      4⤵
      PID:3788
- 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:1816
- - 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:3628
  - - 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:5084
- 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:1112
- - 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:3696
  - - 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:4984
- 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:4416
- - 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:636
  - - C:\Windows\system32\reg.exe
      reg add "HKLM\Software\Microsoft\Windows\CurrentVersion\Policies\System" /v WallpaperStyle /t REG_SZ /d 2 /f
      4⤵
      PID:2908
- 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:3960
- - 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:4664
  - - C:\Windows\system32\reg.exe
      reg add "HKCU\Control Panel\Desktop" /v WallpaperStyle /t REG_SZ /d 2 /f
      4⤵
      PID:2828
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c rundll32.exe user32.dll,UpdatePerUserSystemParameters
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4488
- - C:\Windows\system32\rundll32.exe
    rundll32.exe user32.dll,UpdatePerUserSystemParameters
    3⤵
    PID:3748
- 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⤵
  - Hide Artifacts: Hidden Window
  - Hide Artifacts: Ignore Process Interrupts
  - Suspicious use of WriteProcessMemory
  PID:548
- - 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⤵
    - Hide Artifacts: Hidden Window
    - Hide Artifacts: Ignore Process Interrupts
    - Suspicious use of WriteProcessMemory
    PID:1528
  - - 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⤵
      Command and Scripting Interpreter: PowerShell
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:376

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_lrjyblww.g0a.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/376-506-0x000002BF34810000-0x000002BF34832000-memory.dmp

Filesize
136KB

Download
memory/4092-495-0x0000000000400000-0x0000000000522000-memory.dmp

Filesize
1.1MB

Download
memory/4092-496-0x0000000000400000-0x0000000000522000-memory.dmp

Filesize
1.1MB

Download
memory/4092-497-0x0000000000400000-0x0000000000522000-memory.dmp

Filesize
1.1MB

Download
memory/4092-498-0x0000000000400000-0x0000000000522000-memory.dmp

Filesize
1.1MB

Download