545bf6e1ef2f4c4eeb8c789dbdc37c8d7e211c1712b83e9cdfcfccc160f4c4d9

Analysis

max time kernel
148s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
11/03/2024, 09:56

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General

Target

runtime broker.exe
Size

56KB
MD5

f6744e6fb182bb6f92d1ad14b88fd56b
SHA1

5b6661b56ca77759c58a7ab9fde99fc655fc8510
SHA256

545bf6e1ef2f4c4eeb8c789dbdc37c8d7e211c1712b83e9cdfcfccc160f4c4d9
SHA512

52b20378ed3b890d6c2e91fdee19c91d498893c9cbd97bfb9f760d20313c79916b5a76884f148f5fe5c488c840718f6b63d5a5e5dc1144c0312097b041d6b0db
SSDEEP

768:NfvdWST3xRbyApqHuDlOHTjXhDnyokke5dfED1ns7csFOTRZqTsc7v:pvdWSVRVDlOzjRzrksAOTRZS1v

Score

7^/10

Malware Config

Signatures

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-1-5-21-2727153400-192325109-1870347593-1000\Control Panel\International\Geo\Nation	runtime broker.exe

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

System Information Discovery
T1082

Opens file in notepad (likely ransom note) 1 IoCs

ransomware

pid	Process
4832	NOTEPAD.EXE

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1624 wrote to memory of 1148	1624	runtime broker.exe	89
PID 1624 wrote to memory of 1148	1624	runtime broker.exe	89
PID 1624 wrote to memory of 1148	1624	runtime broker.exe	89
PID 1148 wrote to memory of 3352	1148	cmd.exe	91
PID 1148 wrote to memory of 3352	1148	cmd.exe	91
PID 1148 wrote to memory of 3352	1148	cmd.exe	91

C:\Users\Admin\AppData\Local\Temp\runtime broker.exe
"C:\Users\Admin\AppData\Local\Temp\runtime broker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1624
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\HWAV4SQP9G.BAT" "
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1148
- - C:\Windows\SysWOW64\mode.com
    Mode con: cols=50 lines=25
    3⤵
    PID:3352

C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
1⤵
PID:4656

C:\Windows\System32\NOTEPAD.EXE
"C:\Windows\System32\NOTEPAD.EXE" C:\Users\Admin\AppData\Local\Temp\HWAV4SQP9G.BAT
1⤵
- Opens file in notepad (likely ransom note)
PID:4832

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\HWAV4SQP9G.BAT

Filesize
2KB

MD5
327f891287cc8c37230420f4fd6a68d1

SHA1
0023b6f73b1f1ccdd55c163b37be4ff8fba7c155

SHA256
560d5b4f66622e97c0fbcbb179df05ba240ac0b2a730134b28749ec21c5f7128

SHA512
c8b3fe89920ac3abd7ad3d134d4292060b0d48bfbec712c90c51e6397ea7dea0652abd23deab7cc2943b908148d3bdd308fc4769f4c80fb2c07a5ae00fe6f15a

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