f54b84a4efc58dfba747896c3411ecb6915fd1d7ddf896f8464af251340b14a4

Analysis

max time kernel
151s
max time network
46s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
03-12-2022 23:53

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General

Target

scripts/sirius.lua.example
Size

468B
MD5

1fdd7bce4f24c51ec8267d7fe65b265e
SHA1

4f247776830fb30cf816f227f13d3645b8d3aa6d
SHA256

d331a1344d7354019fdeb564a21f95f85f26458f91aa93d7af58affa9728cb1d
SHA512

4bf9c85600dcab2ff532ef5f459c270d3197ea5a9d46677b4f7f1e0d2e3b3454bc5ba1f64bcb732448cbe37a71a2112511f46166ec4ba0f3db1ca14d4f685bb4

Score

3^/10

Malware Config

Signatures

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

System Information Discovery
T1082

Modifies registry class 10 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\example_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\.example	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\.example\ = "example_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\example_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\example_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\MuiCache	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\example_auto_file	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\example_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\example_auto_file\shell	rundll32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
908	AcroRd32.exe
908	AcroRd32.exe
908	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1088 wrote to memory of 1972	1088	cmd.exe	29
PID 1088 wrote to memory of 1972	1088	cmd.exe	29
PID 1088 wrote to memory of 1972	1088	cmd.exe	29
PID 1972 wrote to memory of 908	1972	rundll32.exe	30
PID 1972 wrote to memory of 908	1972	rundll32.exe	30
PID 1972 wrote to memory of 908	1972	rundll32.exe	30
PID 1972 wrote to memory of 908	1972	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\scripts\sirius.lua.example
1⤵
- Suspicious use of WriteProcessMemory
PID:1088
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\scripts\sirius.lua.example
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:1972
- - C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe
    "C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe" "C:\Users\Admin\AppData\Local\Temp\scripts\sirius.lua.example"
    3⤵
    - Suspicious use of SetWindowsHookEx
    PID:908

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/908-81-0x0000000000000000-mapping.dmp

Download
memory/908-82-0x0000000075241000-0x0000000075243000-memory.dmp

Filesize
8KB

Download
memory/1088-54-0x000007FEFBE61000-0x000007FEFBE63000-memory.dmp

Filesize
8KB

Download
memory/1972-76-0x0000000000000000-mapping.dmp

Download