rhysida | 250e81eeb4df4649ccb13e271ae3f80d44995b2f8ffca7a2c5e1c738546c2ab1

Resubmissions

02/12/2024, 10:27

241202-mg4hxswqbl 10

02/12/2024, 10:25

241202-mgevka1jfx 10

02/12/2024, 10:24

241202-mfqkns1jdy 10

23/06/2023, 02:54

230623-dd7xhabd82 3

Analysis

max time kernel
46s
max time network
38s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
02/12/2024, 10:27

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Report Analysis Logs

General

Target

bad_rhy_mayb.exe
Size

1.2MB
MD5

59a9ca795b59161f767b94fc2dece71a
SHA1

b07f6a5f61834a57304ad4d885bd37d8e1badba8
SHA256

250e81eeb4df4649ccb13e271ae3f80d44995b2f8ffca7a2c5e1c738546c2ab1
SHA512

ec59175002bd9c11c62e83aef2d1b99f883a0f71a151bee5ab1107d3f795b3e5cdd78f13348fd64eed563f6a5df5a0fef3977a8841f4ea4712ff1c2f7e18c222
SSDEEP

24576:ztP7hdO1s6Skscec1SgnyN9HPFCCNhQI6GOfaFVIVrYwcMavbiZn3m75/J2:BLO1qkscec0gnyN9HPFCCNSI6GOfaFVc

Score

10^/10

rhysida execution ransomware

Malware Config

Signatures

Detect Rhysida ransomware 2 IoCs

resource	yara_rule
behavioral2/memory/4744-0-0x0000000000400000-0x0000000000523000-memory.dmp	family_rhysida
behavioral2/memory/3936-20-0x0000000000400000-0x0000000000523000-memory.dmp	family_rhysida

Rhysida
Rhysida is a ransomware that is written in C++ and discovered in 2023.
ransomware rhysida
Rhysida family
rhysida

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
3532	PowerShell.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\%AppData%\Microsoft\Windows\Start Menu\Programs\Windows PowerShell\Windows PowerShell.lnk	PowerShell.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3532	PowerShell.exe
3532	PowerShell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3532	PowerShell.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 3532 wrote to memory of 3936	3532	PowerShell.exe	101
PID 3532 wrote to memory of 3936	3532	PowerShell.exe	101

C:\Users\Admin\AppData\Local\Temp\bad_rhy_mayb.exe
"C:\Users\Admin\AppData\Local\Temp\bad_rhy_mayb.exe"
1⤵
PID:4744

C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
1⤵
PID:4324

C:\Windows\system32\WindowsPowerShell\v1.0\PowerShell.exe
"PowerShell.exe" -noexit -command Set-Location -literalPath 'C:\Users\Admin\AppData\Local\Temp'
1⤵
- Command and Scripting Interpreter: PowerShell
- Drops file in System32 directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3532
- C:\Users\Admin\AppData\Local\Temp\bad_rhy_mayb.exe
  "C:\Users\Admin\AppData\Local\Temp\bad_rhy_mayb.exe"
  2⤵
  PID:3936

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

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_yapalzka.tyt.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/3532-16-0x00000210205A0000-0x00000210205E4000-memory.dmp

Filesize
272KB

Download
memory/3532-3-0x00007FF818053000-0x00007FF818055000-memory.dmp

Filesize
8KB

Download
memory/3532-13-0x00000210201E0000-0x0000021020202000-memory.dmp

Filesize
136KB

Download
memory/3532-14-0x00007FF818050000-0x00007FF818B11000-memory.dmp

Filesize
10.8MB

Download
memory/3532-15-0x00007FF818050000-0x00007FF818B11000-memory.dmp

Filesize
10.8MB

Download
memory/3532-17-0x0000021020670000-0x00000210206E6000-memory.dmp

Filesize
472KB

Download
memory/3532-18-0x0000021020630000-0x000002102064E000-memory.dmp

Filesize
120KB

Download
memory/3532-21-0x00007FF818053000-0x00007FF818055000-memory.dmp

Filesize
8KB

Download
memory/3532-22-0x00007FF818050000-0x00007FF818B11000-memory.dmp

Filesize
10.8MB

Download
memory/3532-25-0x00007FF818050000-0x00007FF818B11000-memory.dmp

Filesize
10.8MB

Download
memory/3936-20-0x0000000000400000-0x0000000000523000-memory.dmp

Filesize
1.1MB

Download
memory/4744-0-0x0000000000400000-0x0000000000523000-memory.dmp

Filesize
1.1MB

Download