rhysida | d5c2f87033a5baeeb1b5b681f2c4a156ff1c05ccd1bfdaf6eae019fc4d5320ee

Analysis

max time kernel
122s
max time network
123s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
02/10/2024, 09:32

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General

Target

d5c2f87033a5baeeb1b5b681f2c4a156ff1c05ccd1bfdaf6eae019fc4d5320ee.exe
Size

417KB
MD5

1e256229b58061860be8dbf0dc4fe67e
SHA1

338d4f4ec714359d589918cee1adad12ef231907
SHA256

d5c2f87033a5baeeb1b5b681f2c4a156ff1c05ccd1bfdaf6eae019fc4d5320ee
SHA512

7f53533d04e2b11bd98d92da91eb541f90239dba25d609d7f32c070a6003604a5e6a8ab75252a3db59e42a699b835eb580d95098ce72cc9c7a0e9ef75311f283
SSDEEP

6144:MmY7bSLzf+AZ0uAF+rJ267j0MCMF0oko84zgtdcZk+DoQPT:zgT67ko/r0t6K

Score

10^/10

rhysida credential_access discovery ransomware spyware stealer

Malware Config

Signatures

Detect Rhysida ransomware 3 IoCs

resource	yara_rule
behavioral1/memory/2120-1407-0x0000000000400000-0x0000000000477000-memory.dmp	family_rhysida
behavioral1/memory/2120-1408-0x0000000000400000-0x0000000000477000-memory.dmp	family_rhysida
behavioral1/memory/2120-1410-0x0000000000400000-0x0000000000477000-memory.dmp	family_rhysida

Rhysida
Rhysida is a ransomware that is written in C++ and discovered in 2023.
ransomware rhysida
Renames multiple (718) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
ransomware
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	d5c2f87033a5baeeb1b5b681f2c4a156ff1c05ccd1bfdaf6eae019fc4d5320ee.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

Sets desktop wallpaper using registry 2 TTPs 1 IoCs

ransomware

Defacement

T1491

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Public\\bg.jpg"	reg.exe

Browser Information Discovery 1 TTPs
Enumerate browser information.
discovery

Browser Information Discovery
T1217

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 2120 wrote to memory of 2412	2120	d5c2f87033a5baeeb1b5b681f2c4a156ff1c05ccd1bfdaf6eae019fc4d5320ee.exe	32
PID 2120 wrote to memory of 2412	2120	d5c2f87033a5baeeb1b5b681f2c4a156ff1c05ccd1bfdaf6eae019fc4d5320ee.exe	32
PID 2120 wrote to memory of 2412	2120	d5c2f87033a5baeeb1b5b681f2c4a156ff1c05ccd1bfdaf6eae019fc4d5320ee.exe	32
PID 2412 wrote to memory of 1764	2412	cmd.exe	34
PID 2412 wrote to memory of 1764	2412	cmd.exe	34
PID 2412 wrote to memory of 1764	2412	cmd.exe	34
PID 1764 wrote to memory of 316	1764	cmd.exe	35
PID 1764 wrote to memory of 316	1764	cmd.exe	35
PID 1764 wrote to memory of 316	1764	cmd.exe	35
PID 2120 wrote to memory of 1768	2120	d5c2f87033a5baeeb1b5b681f2c4a156ff1c05ccd1bfdaf6eae019fc4d5320ee.exe	36
PID 2120 wrote to memory of 1768	2120	d5c2f87033a5baeeb1b5b681f2c4a156ff1c05ccd1bfdaf6eae019fc4d5320ee.exe	36
PID 2120 wrote to memory of 1768	2120	d5c2f87033a5baeeb1b5b681f2c4a156ff1c05ccd1bfdaf6eae019fc4d5320ee.exe	36
PID 1768 wrote to memory of 1792	1768	cmd.exe	38
PID 1768 wrote to memory of 1792	1768	cmd.exe	38
PID 1768 wrote to memory of 1792	1768	cmd.exe	38
PID 1792 wrote to memory of 2392	1792	cmd.exe	39
PID 1792 wrote to memory of 2392	1792	cmd.exe	39
PID 1792 wrote to memory of 2392	1792	cmd.exe	39
PID 2120 wrote to memory of 1684	2120	d5c2f87033a5baeeb1b5b681f2c4a156ff1c05ccd1bfdaf6eae019fc4d5320ee.exe	40
PID 2120 wrote to memory of 1684	2120	d5c2f87033a5baeeb1b5b681f2c4a156ff1c05ccd1bfdaf6eae019fc4d5320ee.exe	40
PID 2120 wrote to memory of 1684	2120	d5c2f87033a5baeeb1b5b681f2c4a156ff1c05ccd1bfdaf6eae019fc4d5320ee.exe	40
PID 1684 wrote to memory of 2344	1684	cmd.exe	42
PID 1684 wrote to memory of 2344	1684	cmd.exe	42
PID 1684 wrote to memory of 2344	1684	cmd.exe	42
PID 2344 wrote to memory of 2332	2344	cmd.exe	43
PID 2344 wrote to memory of 2332	2344	cmd.exe	43
PID 2344 wrote to memory of 2332	2344	cmd.exe	43
PID 2120 wrote to memory of 1508	2120	d5c2f87033a5baeeb1b5b681f2c4a156ff1c05ccd1bfdaf6eae019fc4d5320ee.exe	44
PID 2120 wrote to memory of 1508	2120	d5c2f87033a5baeeb1b5b681f2c4a156ff1c05ccd1bfdaf6eae019fc4d5320ee.exe	44
PID 2120 wrote to memory of 1508	2120	d5c2f87033a5baeeb1b5b681f2c4a156ff1c05ccd1bfdaf6eae019fc4d5320ee.exe	44
PID 1508 wrote to memory of 1588	1508	cmd.exe	46
PID 1508 wrote to memory of 1588	1508	cmd.exe	46
PID 1508 wrote to memory of 1588	1508	cmd.exe	46
PID 1588 wrote to memory of 3016	1588	cmd.exe	47
PID 1588 wrote to memory of 3016	1588	cmd.exe	47
PID 1588 wrote to memory of 3016	1588	cmd.exe	47
PID 2120 wrote to memory of 1032	2120	d5c2f87033a5baeeb1b5b681f2c4a156ff1c05ccd1bfdaf6eae019fc4d5320ee.exe	48
PID 2120 wrote to memory of 1032	2120	d5c2f87033a5baeeb1b5b681f2c4a156ff1c05ccd1bfdaf6eae019fc4d5320ee.exe	48
PID 2120 wrote to memory of 1032	2120	d5c2f87033a5baeeb1b5b681f2c4a156ff1c05ccd1bfdaf6eae019fc4d5320ee.exe	48
PID 1032 wrote to memory of 1028	1032	cmd.exe	50
PID 1032 wrote to memory of 1028	1032	cmd.exe	50
PID 1032 wrote to memory of 1028	1032	cmd.exe	50
PID 1028 wrote to memory of 2724	1028	cmd.exe	51
PID 1028 wrote to memory of 2724	1028	cmd.exe	51
PID 1028 wrote to memory of 2724	1028	cmd.exe	51
PID 2120 wrote to memory of 2976	2120	d5c2f87033a5baeeb1b5b681f2c4a156ff1c05ccd1bfdaf6eae019fc4d5320ee.exe	52
PID 2120 wrote to memory of 2976	2120	d5c2f87033a5baeeb1b5b681f2c4a156ff1c05ccd1bfdaf6eae019fc4d5320ee.exe	52
PID 2120 wrote to memory of 2976	2120	d5c2f87033a5baeeb1b5b681f2c4a156ff1c05ccd1bfdaf6eae019fc4d5320ee.exe	52
PID 2976 wrote to memory of 2884	2976	cmd.exe	54
PID 2976 wrote to memory of 2884	2976	cmd.exe	54
PID 2976 wrote to memory of 2884	2976	cmd.exe	54
PID 2884 wrote to memory of 1164	2884	cmd.exe	55
PID 2884 wrote to memory of 1164	2884	cmd.exe	55
PID 2884 wrote to memory of 1164	2884	cmd.exe	55
PID 2120 wrote to memory of 544	2120	d5c2f87033a5baeeb1b5b681f2c4a156ff1c05ccd1bfdaf6eae019fc4d5320ee.exe	56
PID 2120 wrote to memory of 544	2120	d5c2f87033a5baeeb1b5b681f2c4a156ff1c05ccd1bfdaf6eae019fc4d5320ee.exe	56
PID 2120 wrote to memory of 544	2120	d5c2f87033a5baeeb1b5b681f2c4a156ff1c05ccd1bfdaf6eae019fc4d5320ee.exe	56
PID 544 wrote to memory of 2324	544	cmd.exe	58
PID 544 wrote to memory of 2324	544	cmd.exe	58
PID 544 wrote to memory of 2324	544	cmd.exe	58
PID 2324 wrote to memory of 2744	2324	cmd.exe	59
PID 2324 wrote to memory of 2744	2324	cmd.exe	59
PID 2324 wrote to memory of 2744	2324	cmd.exe	59
PID 2120 wrote to memory of 2720	2120	d5c2f87033a5baeeb1b5b681f2c4a156ff1c05ccd1bfdaf6eae019fc4d5320ee.exe	60

C:\Users\Admin\AppData\Local\Temp\d5c2f87033a5baeeb1b5b681f2c4a156ff1c05ccd1bfdaf6eae019fc4d5320ee.exe
"C:\Users\Admin\AppData\Local\Temp\d5c2f87033a5baeeb1b5b681f2c4a156ff1c05ccd1bfdaf6eae019fc4d5320ee.exe"
1⤵
- Drops startup file
- Suspicious use of WriteProcessMemory
PID:2120
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c cmd.exe /c reg delete "HKCU\Contol Panel\Desktop" /v Wallpaper /f
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2412
- - C:\Windows\system32\cmd.exe
    cmd.exe /c reg delete "HKCU\Contol Panel\Desktop" /v Wallpaper /f
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1764
  - - C:\Windows\system32\reg.exe
      reg delete "HKCU\Contol Panel\Desktop" /v Wallpaper /f
      4⤵
      PID:316
- 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:1768
- - C:\Windows\system32\cmd.exe
    cmd.exe /c reg delete "HKCU\Conttol Panel\Desktop" /v WallpaperStyle /f
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1792
  - - C:\Windows\system32\reg.exe
      reg delete "HKCU\Conttol Panel\Desktop" /v WallpaperStyle /f
      4⤵
      PID:2392
- 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:1684
- - 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:2344
  - - C:\Windows\system32\reg.exe
      reg add "HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\ActiveDesktop" /v NoChangingWallPaper /t REG_SZ /d 1 /f
      4⤵
      PID:2332
- 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:1508
- - 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:1588
  - - C:\Windows\system32\reg.exe
      reg add "HKLM\Software\Microsoft\Windows\CurrentVersion\Policies\ActiveDesktop" /v NoChangingWallPaper /t REG_SZ /d 1 /f
      4⤵
      PID:3016
- 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:1032
- - 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:1028
  - - 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:2724
- 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:2976
- - 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:2884
  - - 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:1164
- 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:544
- - 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:2324
  - - C:\Windows\system32\reg.exe
      reg add "HKLM\Software\Microsoft\Windows\CurrentVersion\Policies\System" /v WallpaperStyle /t REG_SZ /d 2 /f
      4⤵
      PID:2744
- 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:2720
- - C:\Windows\system32\cmd.exe
    cmd.exe /c reg add "HKCU\Control Panel\Desktop" /v WallpaperStyle /t REG_SZ /d 2 /f
    3⤵
    PID:2640
  - - C:\Windows\system32\reg.exe
      reg add "HKCU\Control Panel\Desktop" /v WallpaperStyle /t REG_SZ /d 2 /f
      4⤵
      PID:2856
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c rundll32.exe user32.dll,UpdatePerUserSystemParameters
  2⤵
  PID:2748
- - C:\Windows\system32\rundll32.exe
    rundll32.exe user32.dll,UpdatePerUserSystemParameters
    3⤵
    PID:2904

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

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