b56d5976d93635974b4bd302578e147064523a1e07ac11c55ba078a16a571fd7

General

Target

B56D5976D93635974B4BD302578E147064523A1E07AC1.exe
Size

313KB
MD5

1bf50ad7ee44ebd5d6a12033882ce72c
SHA1

40c0674283595b03200bd2d7b46aff240c94193e
SHA256

b56d5976d93635974b4bd302578e147064523a1e07ac11c55ba078a16a571fd7
SHA512

c14ff25c5b6be262fa2a880051e784945eb7f35523a837ed9ce0bffa4f4652474cb6a28dffd81d8327ae742f7f913d53a82edaf02688893e58fc55057039aa26
SSDEEP

3072:7OKkzoKqcD9MBkqtk26R3nQ5u8gXOR4F5/tcoJlPtaWHubKtbCrxdtSQbexk7pi:7KzBqIUb6cgw46Ot0ytbCQQbexkI

Score

8^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1528	MicrosoftSilverlighti.exe

Modifies Windows Firewall 1 TTPs 1 IoCs

evasion

Modify Existing Service

T1031

pid	Process
1416	netsh.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-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\f2c2f645d6addde7f4a261499ae4c969 = "\"C:\\Users\\Admin\\AppData\\Roaming\\MicrosoftSilverlighti.exe\" .."	MicrosoftSilverlighti.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\f2c2f645d6addde7f4a261499ae4c969 = "\"C:\\Users\\Admin\\AppData\\Roaming\\MicrosoftSilverlighti.exe\" .."	MicrosoftSilverlighti.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	1528	MicrosoftSilverlighti.exe
Token: 33	1528	MicrosoftSilverlighti.exe
Token: SeIncBasePriorityPrivilege	1528	MicrosoftSilverlighti.exe
Token: 33	1528	MicrosoftSilverlighti.exe
Token: SeIncBasePriorityPrivilege	1528	MicrosoftSilverlighti.exe
Token: 33	1528	MicrosoftSilverlighti.exe
Token: SeIncBasePriorityPrivilege	1528	MicrosoftSilverlighti.exe
Token: 33	1528	MicrosoftSilverlighti.exe
Token: SeIncBasePriorityPrivilege	1528	MicrosoftSilverlighti.exe
Token: 33	1528	MicrosoftSilverlighti.exe
Token: SeIncBasePriorityPrivilege	1528	MicrosoftSilverlighti.exe
Token: 33	1528	MicrosoftSilverlighti.exe
Token: SeIncBasePriorityPrivilege	1528	MicrosoftSilverlighti.exe
Token: 33	1528	MicrosoftSilverlighti.exe
Token: SeIncBasePriorityPrivilege	1528	MicrosoftSilverlighti.exe
Token: 33	1528	MicrosoftSilverlighti.exe
Token: SeIncBasePriorityPrivilege	1528	MicrosoftSilverlighti.exe
Token: 33	1528	MicrosoftSilverlighti.exe
Token: SeIncBasePriorityPrivilege	1528	MicrosoftSilverlighti.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2016 wrote to memory of 1528	2016	B56D5976D93635974B4BD302578E147064523A1E07AC1.exe	27
PID 2016 wrote to memory of 1528	2016	B56D5976D93635974B4BD302578E147064523A1E07AC1.exe	27
PID 2016 wrote to memory of 1528	2016	B56D5976D93635974B4BD302578E147064523A1E07AC1.exe	27
PID 1528 wrote to memory of 1416	1528	MicrosoftSilverlighti.exe	28
PID 1528 wrote to memory of 1416	1528	MicrosoftSilverlighti.exe	28
PID 1528 wrote to memory of 1416	1528	MicrosoftSilverlighti.exe	28

C:\Users\Admin\AppData\Local\Temp\B56D5976D93635974B4BD302578E147064523A1E07AC1.exe
"C:\Users\Admin\AppData\Local\Temp\B56D5976D93635974B4BD302578E147064523A1E07AC1.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2016
- C:\Users\Admin\AppData\Roaming\MicrosoftSilverlighti.exe
  "C:\Users\Admin\AppData\Roaming\MicrosoftSilverlighti.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1528
- - C:\Windows\system32\netsh.exe
    netsh firewall add allowedprogram "C:\Users\Admin\AppData\Roaming\MicrosoftSilverlighti.exe" "MicrosoftSilverlighti.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    PID:1416

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\MicrosoftSilverlighti.exe

Filesize
313KB

MD5
1bf50ad7ee44ebd5d6a12033882ce72c

SHA1
40c0674283595b03200bd2d7b46aff240c94193e

SHA256
b56d5976d93635974b4bd302578e147064523a1e07ac11c55ba078a16a571fd7

SHA512
c14ff25c5b6be262fa2a880051e784945eb7f35523a837ed9ce0bffa4f4652474cb6a28dffd81d8327ae742f7f913d53a82edaf02688893e58fc55057039aa26

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

Filesize
313KB

MD5
1bf50ad7ee44ebd5d6a12033882ce72c

SHA1
40c0674283595b03200bd2d7b46aff240c94193e

SHA256
b56d5976d93635974b4bd302578e147064523a1e07ac11c55ba078a16a571fd7

SHA512
c14ff25c5b6be262fa2a880051e784945eb7f35523a837ed9ce0bffa4f4652474cb6a28dffd81d8327ae742f7f913d53a82edaf02688893e58fc55057039aa26

Download Submit
memory/1528-60-0x000007FEF3A60000-0x000007FEF4483000-memory.dmp

Filesize
10.1MB

Download
memory/1528-61-0x000007FEECC10000-0x000007FEEDCA6000-memory.dmp

Filesize
16.6MB

Download
memory/1528-64-0x000000000209A000-0x00000000020B9000-memory.dmp

Filesize
124KB

Download
memory/1528-65-0x000000000209A000-0x00000000020B9000-memory.dmp

Filesize
124KB

Download
memory/2016-54-0x000007FEF4490000-0x000007FEF4EB3000-memory.dmp

Filesize
10.1MB

Download
memory/2016-55-0x000007FEEDCB0000-0x000007FEEED46000-memory.dmp

Filesize
16.6MB

Download
memory/2016-56-0x000007FEFB8D1000-0x000007FEFB8D3000-memory.dmp

Filesize
8KB

Download

Analysis

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