locky | a92fabe3ad5c2e51fe204e977772c935e3caeab6eb1c779a9258c7758eaff0c6

Analysis

max time kernel
152s
max time network
150s
platform
windows10_x64
resource
win10-en-20211104
submitted
18-11-2021 14:03

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General

Target

20161205_d0a20f3ad3b7a2c399a9f9c8245dd76f.js
Size

13KB
MD5

f6dbcc215aaca6a41234b8f5c4e63102
SHA1

ba8aaa58fa4e526cb0b6ef75948c5f5c22345d3d
SHA256

a92fabe3ad5c2e51fe204e977772c935e3caeab6eb1c779a9258c7758eaff0c6
SHA512

46bd8ec361b7cd22b311b7c4413ec1146d6b5c7ab7c6d99792423d27bb1748c0c61e6dd3c6d856af96b3fbb53d7a2e5b0797b17cfe36c356c12bc81dd5605397

Score

10^/10

locky locky_osiris ransomware

Malware Config

Signatures

Locky
Ransomware strain released in 2016, with advanced features like anti-analysis.
ransomware locky
Locky (Osiris variant)
Variant of the Locky ransomware seen in the wild since early 2017.
ransomware locky_osiris

Blocklisted process makes network request 10 IoCs

flow	pid	Process
8	4164	wscript.exe
10	4164	wscript.exe
14	4164	wscript.exe
17	4164	wscript.exe
19	4164	wscript.exe
35	3972	rundll32.exe
47	3972	rundll32.exe
48	3972	rundll32.exe
54	3972	rundll32.exe
55	3972	rundll32.exe

Loads dropped DLL 1 IoCs

pid	Process
3972	rundll32.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 WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 4164 wrote to memory of 4188	4164	wscript.exe	68
PID 4164 wrote to memory of 4188	4164	wscript.exe	68
PID 4188 wrote to memory of 3972	4188	rundll32.exe	69
PID 4188 wrote to memory of 3972	4188	rundll32.exe	69
PID 4188 wrote to memory of 3972	4188	rundll32.exe	69

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\20161205_d0a20f3ad3b7a2c399a9f9c8245dd76f.js
1⤵
- Blocklisted process makes network request
- Suspicious use of WriteProcessMemory
PID:4164
- C:\Windows\System32\rundll32.exe
  "C:\Windows\System32\rundll32.exe" C:\Users\Admin\AppData\Local\Temp\IBJJVA~1.ZK,TOxNKCZjUHCfTf9D
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4188
- - C:\Windows\SysWOW64\rundll32.exe
    "C:\Windows\System32\rundll32.exe" C:\Users\Admin\AppData\Local\Temp\IBJJVA~1.ZK,TOxNKCZjUHCfTf9D
    3⤵
    - Blocklisted process makes network request
    - Loads dropped DLL
    PID:3972

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/3972-122-0x0000000073DC0000-0x0000000073DFA000-memory.dmp

Filesize
232KB

Download
memory/3972-124-0x00000000001F0000-0x00000000001F1000-memory.dmp

Filesize
4KB

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