29824133432b929766e8287ad658b75ebfef08d62341c0bb338f239c6f114932

Reason

Machine shutdown

General

Target

2024-04-13_7f193964270dc3d207e4413890c95ab2_ryuk.exe
Size

170KB
MD5

7f193964270dc3d207e4413890c95ab2
SHA1

e3b1b6adf8292e91234a455397d6496b5d92e322
SHA256

29824133432b929766e8287ad658b75ebfef08d62341c0bb338f239c6f114932
SHA512

16210a0ee45b1ea20921ea967e44ad569427960c8299840398c8024c7ef88d18ff4aaf18a6331bbc620992e6ae77c221a72381d136b9f4b1070d4cb788e410d4
SSDEEP

3072:2HeriftL/WSo1vDb53j/8WGUzaqVh4LI8zQpni:2+rA/WSo1rl3ALrlHQpni

Score

9^/10

persistence

Malware Config

Signatures

Detects command variations typically used by ransomware 2 IoCs

resource	yara_rule
behavioral2/memory/2560-0-0x00007FF73F660000-0x00007FF73F9EE000-memory.dmp	INDICATOR_SUSPICIOUS_GENRansomware
behavioral2/memory/2560-1-0x00007FF73F660000-0x00007FF73F9EE000-memory.dmp	INDICATOR_SUSPICIOUS_GENRansomware

Detects executables containing many references to VEEAM. Observed in ransomware 2 IoCs

resource	yara_rule
behavioral2/memory/2560-0-0x00007FF73F660000-0x00007FF73F9EE000-memory.dmp	INDICATOR_SUSPICOUS_EXE_References_VEEAM
behavioral2/memory/2560-1-0x00007FF73F660000-0x00007FF73F9EE000-memory.dmp	INDICATOR_SUSPICOUS_EXE_References_VEEAM

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1230272463-3683322193-511842230-1000\Control Panel\International\Geo\Nation	2024-04-13_7f193964270dc3d207e4413890c95ab2_ryuk.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1230272463-3683322193-511842230-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\svchos = "C:\\Users\\Admin\\AppData\\Local\\Temp\\2024-04-13_7f193964270dc3d207e4413890c95ab2_ryuk.exe"	reg.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2200	2024-04-13_7f193964270dc3d207e4413890c95ab2_ryuk.exe
2200	2024-04-13_7f193964270dc3d207e4413890c95ab2_ryuk.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2200	2024-04-13_7f193964270dc3d207e4413890c95ab2_ryuk.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2200 wrote to memory of 3968	2200	2024-04-13_7f193964270dc3d207e4413890c95ab2_ryuk.exe	89
PID 2200 wrote to memory of 3968	2200	2024-04-13_7f193964270dc3d207e4413890c95ab2_ryuk.exe	89
PID 2200 wrote to memory of 2560	2200	2024-04-13_7f193964270dc3d207e4413890c95ab2_ryuk.exe	42
PID 3968 wrote to memory of 1372	3968	cmd.exe	91
PID 3968 wrote to memory of 1372	3968	cmd.exe	91
PID 2200 wrote to memory of 2568	2200	2024-04-13_7f193964270dc3d207e4413890c95ab2_ryuk.exe	43
PID 2200 wrote to memory of 2816	2200	2024-04-13_7f193964270dc3d207e4413890c95ab2_ryuk.exe	48
PID 2200 wrote to memory of 3524	2200	2024-04-13_7f193964270dc3d207e4413890c95ab2_ryuk.exe	57
PID 2200 wrote to memory of 3716	2200	2024-04-13_7f193964270dc3d207e4413890c95ab2_ryuk.exe	58

C:\Windows\system32\sihost.exe
sihost.exe
1⤵
PID:2560

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k UnistackSvcGroup -s CDPUserSvc
1⤵
PID:2568

C:\Windows\system32\taskhostw.exe
taskhostw.exe {222A245B-E637-4AE9-A93F-A59CA119A75E}
1⤵
PID:2816

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k ClipboardSvcGroup -p -s cbdhsvc
1⤵
PID:3524

C:\Windows\system32\DllHost.exe
C:\Windows\system32\DllHost.exe /Processid:{3EB3C877-1F16-487C-9050-104DBCD66683}
1⤵
PID:3716

C:\Users\Admin\AppData\Local\Temp\2024-04-13_7f193964270dc3d207e4413890c95ab2_ryuk.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-13_7f193964270dc3d207e4413890c95ab2_ryuk.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2200
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /C REG ADD "HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /v "svchos" /t REG_SZ /d "C:\Users\Admin\AppData\Local\Temp\2024-04-13_7f193964270dc3d207e4413890c95ab2_ryuk.exe" /f
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3968
- - C:\Windows\system32\reg.exe
    REG ADD "HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /v "svchos" /t REG_SZ /d "C:\Users\Admin\AppData\Local\Temp\2024-04-13_7f193964270dc3d207e4413890c95ab2_ryuk.exe" /f
    3⤵
    - Adds Run key to start application
    PID:1372

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --field-trial-handle=4048,i,5838972776061051553,16186488414347324308,262144 --variations-seed-version --mojo-platform-channel-handle=1444 /prefetch:8
1⤵
PID:3792

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/2560-0-0x00007FF73F660000-0x00007FF73F9EE000-memory.dmp

Filesize
3.6MB

Download
memory/2560-1-0x00007FF73F660000-0x00007FF73F9EE000-memory.dmp

Filesize
3.6MB

Download

Analysis

Sharing

Errors

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads