locky | 8758f8414e002568ca5872b1677f26a238ef8dd7e10840c9b23b296c86ff9f13

Analysis

max time kernel
152s
max time network
122s
platform
windows7_x64
resource
win7-en-20211104
submitted
17-11-2021 11:31

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General

Target

20161205_94392b41886882eae567704071328694.js
Size

12KB
MD5

606a681823a1378212c3eb66e9f4b2f0
SHA1

7f60d8ad61224419a77e43626c81f5c7c2510533
SHA256

8758f8414e002568ca5872b1677f26a238ef8dd7e10840c9b23b296c86ff9f13
SHA512

d4366b90d827fa32f1dd5454a0bc6d4776073867bfbbf4c5ae9cb94bac1a328823b62691361d324e941d7b9a73aa9e65f538878fd7ab8a325d15e50e7769d1a5

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 7 IoCs

flow	pid	Process
5	1096	wscript.exe
8	1096	wscript.exe
9	1984	rundll32.exe
12	1984	rundll32.exe
13	1984	rundll32.exe
14	1984	rundll32.exe
15	1984	rundll32.exe

Loads dropped DLL 1 IoCs

pid	Process
1984	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 10 IoCs

description	pid	Process	procid_target
PID 1096 wrote to memory of 2004	1096	wscript.exe	30
PID 1096 wrote to memory of 2004	1096	wscript.exe	30
PID 1096 wrote to memory of 2004	1096	wscript.exe	30
PID 2004 wrote to memory of 1984	2004	rundll32.exe	31
PID 2004 wrote to memory of 1984	2004	rundll32.exe	31
PID 2004 wrote to memory of 1984	2004	rundll32.exe	31
PID 2004 wrote to memory of 1984	2004	rundll32.exe	31
PID 2004 wrote to memory of 1984	2004	rundll32.exe	31
PID 2004 wrote to memory of 1984	2004	rundll32.exe	31
PID 2004 wrote to memory of 1984	2004	rundll32.exe	31

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\20161205_94392b41886882eae567704071328694.js
1⤵
- Blocklisted process makes network request
- Suspicious use of WriteProcessMemory
PID:1096
- C:\Windows\System32\rundll32.exe
  "C:\Windows\System32\rundll32.exe" C:\Users\Admin\AppData\Local\Temp\RPDIHV~1.ZK,TOxNKCZjUHCfTf9D
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2004
- - C:\Windows\SysWOW64\rundll32.exe
    "C:\Windows\System32\rundll32.exe" C:\Users\Admin\AppData\Local\Temp\RPDIHV~1.ZK,TOxNKCZjUHCfTf9D
    3⤵
    - Blocklisted process makes network request
    - Loads dropped DLL
    PID:1984

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/1984-58-0x0000000075A61000-0x0000000075A63000-memory.dmp

Filesize
8KB

Download
memory/1984-60-0x0000000000160000-0x0000000000161000-memory.dmp

Filesize
4KB

Download
memory/1984-61-0x0000000075020000-0x000000007505A000-memory.dmp

Filesize
232KB

Download