60fbfae93eb2f1aedf9f77ea6ee2d46b1f2b050ac3460219a525531c39890630

General

Target

4b48773aca579ec261eec75a86292e0e.exe
Size

158KB
MD5

4b48773aca579ec261eec75a86292e0e
SHA1

efd054d02335da2bc2bf494ce8c0e8f67345d03b
SHA256

60fbfae93eb2f1aedf9f77ea6ee2d46b1f2b050ac3460219a525531c39890630
SHA512

c5c83d40024b808c619d4a0f0e44f5579a9cb87d9bc5559c7e64ed2faceccce2300b20c80edaa613fa870777311872557f712036f461516db7d84d43898cd664
SSDEEP

3072:/DLeUFzL1a1G4irMnO41dtHkU3yVIuCehX1eBALfC10M4RD/:S1uwnO41dKpLCkeBoC10ME

Score

8^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1692	runtimebrokerok.exe

Modifies Windows Firewall 1 TTPs 1 IoCs

evasion

Modify Existing Service

T1031

pid	Process
1464	netsh.exe

Drops startup file 2 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\de768b3dcc60e38e0333dbc9cad3fd59.exe	runtimebrokerok.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\de768b3dcc60e38e0333dbc9cad3fd59.exe	runtimebrokerok.exe

Loads dropped DLL 1 IoCs

pid	Process
1812	4b48773aca579ec261eec75a86292e0e.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\de768b3dcc60e38e0333dbc9cad3fd59 = "\"C:\\Users\\Admin\\AppData\\Roaming\\runtimebrokerok.exe\" .."	runtimebrokerok.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\de768b3dcc60e38e0333dbc9cad3fd59 = "\"C:\\Users\\Admin\\AppData\\Roaming\\runtimebrokerok.exe\" .."	runtimebrokerok.exe

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

System Information Discovery
T1082

Suspicious use of AdjustPrivilegeToken 19 IoCs

description	pid	Process
Token: SeDebugPrivilege	1692	runtimebrokerok.exe
Token: 33	1692	runtimebrokerok.exe
Token: SeIncBasePriorityPrivilege	1692	runtimebrokerok.exe
Token: 33	1692	runtimebrokerok.exe
Token: SeIncBasePriorityPrivilege	1692	runtimebrokerok.exe
Token: 33	1692	runtimebrokerok.exe
Token: SeIncBasePriorityPrivilege	1692	runtimebrokerok.exe
Token: 33	1692	runtimebrokerok.exe
Token: SeIncBasePriorityPrivilege	1692	runtimebrokerok.exe
Token: 33	1692	runtimebrokerok.exe
Token: SeIncBasePriorityPrivilege	1692	runtimebrokerok.exe
Token: 33	1692	runtimebrokerok.exe
Token: SeIncBasePriorityPrivilege	1692	runtimebrokerok.exe
Token: 33	1692	runtimebrokerok.exe
Token: SeIncBasePriorityPrivilege	1692	runtimebrokerok.exe
Token: 33	1692	runtimebrokerok.exe
Token: SeIncBasePriorityPrivilege	1692	runtimebrokerok.exe
Token: 33	1692	runtimebrokerok.exe
Token: SeIncBasePriorityPrivilege	1692	runtimebrokerok.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1812 wrote to memory of 1692	1812	4b48773aca579ec261eec75a86292e0e.exe	28
PID 1812 wrote to memory of 1692	1812	4b48773aca579ec261eec75a86292e0e.exe	28
PID 1812 wrote to memory of 1692	1812	4b48773aca579ec261eec75a86292e0e.exe	28
PID 1812 wrote to memory of 1692	1812	4b48773aca579ec261eec75a86292e0e.exe	28
PID 1692 wrote to memory of 1464	1692	runtimebrokerok.exe	29
PID 1692 wrote to memory of 1464	1692	runtimebrokerok.exe	29
PID 1692 wrote to memory of 1464	1692	runtimebrokerok.exe	29
PID 1692 wrote to memory of 1464	1692	runtimebrokerok.exe	29

C:\Users\Admin\AppData\Local\Temp\4b48773aca579ec261eec75a86292e0e.exe
"C:\Users\Admin\AppData\Local\Temp\4b48773aca579ec261eec75a86292e0e.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1812
- C:\Users\Admin\AppData\Roaming\runtimebrokerok.exe
  "C:\Users\Admin\AppData\Roaming\runtimebrokerok.exe"
  2⤵
  - Executes dropped EXE
  - Drops startup file
  - Adds Run key to start application
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1692
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Users\Admin\AppData\Roaming\runtimebrokerok.exe" "runtimebrokerok.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    PID:1464

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Modify Existing Service

1

T1031

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\runtimebrokerok.exe

Filesize
158KB

MD5
4b48773aca579ec261eec75a86292e0e

SHA1
efd054d02335da2bc2bf494ce8c0e8f67345d03b

SHA256
60fbfae93eb2f1aedf9f77ea6ee2d46b1f2b050ac3460219a525531c39890630

SHA512
c5c83d40024b808c619d4a0f0e44f5579a9cb87d9bc5559c7e64ed2faceccce2300b20c80edaa613fa870777311872557f712036f461516db7d84d43898cd664

Download Submit
C:\Users\Admin\AppData\Roaming\runtimebrokerok.exe

Filesize
158KB

MD5
4b48773aca579ec261eec75a86292e0e

SHA1
efd054d02335da2bc2bf494ce8c0e8f67345d03b

SHA256
60fbfae93eb2f1aedf9f77ea6ee2d46b1f2b050ac3460219a525531c39890630

SHA512
c5c83d40024b808c619d4a0f0e44f5579a9cb87d9bc5559c7e64ed2faceccce2300b20c80edaa613fa870777311872557f712036f461516db7d84d43898cd664

Download Submit
\Users\Admin\AppData\Roaming\runtimebrokerok.exe

Filesize
158KB

MD5
4b48773aca579ec261eec75a86292e0e

SHA1
efd054d02335da2bc2bf494ce8c0e8f67345d03b

SHA256
60fbfae93eb2f1aedf9f77ea6ee2d46b1f2b050ac3460219a525531c39890630

SHA512
c5c83d40024b808c619d4a0f0e44f5579a9cb87d9bc5559c7e64ed2faceccce2300b20c80edaa613fa870777311872557f712036f461516db7d84d43898cd664

Download Submit
memory/1692-62-0x0000000074970000-0x0000000074F1B000-memory.dmp

Filesize
5.7MB

Download
memory/1692-65-0x0000000074970000-0x0000000074F1B000-memory.dmp

Filesize
5.7MB

Download
memory/1812-54-0x0000000076411000-0x0000000076413000-memory.dmp

Filesize
8KB

Download
memory/1812-55-0x0000000074970000-0x0000000074F1B000-memory.dmp

Filesize
5.7MB

Download
memory/1812-61-0x0000000074970000-0x0000000074F1B000-memory.dmp

Filesize
5.7MB

Download

Analysis

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