locky | 10fc625dc1859a1f88b9cae2aae55e4268c027a65eff039d0266e855c75b6ca5

Analysis

Target

20161205_0a3057963564d1fbe7c4c961ad8c2816.js
Size

13KB
MD5

874e785cda72eb99593ce097ab739b71
SHA1

a8b8d3ed05173b8a33d3f03d525ea440e593848c
SHA256

10fc625dc1859a1f88b9cae2aae55e4268c027a65eff039d0266e855c75b6ca5
SHA512

c984bfc1dc0ea684c466530bba8d8a83ad61da413e23cd6f2bd98301b5560c5f5acc6d7ced6c5035fd9954239a7a3ab8284120d8c07d568bb579eb454f398cab

Score

10^/10

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 6 IoCs

Processes:

wscript.exerundll32.exe

flow pid process

10 4056 wscript.exe
24 804 rundll32.exe
25 804 rundll32.exe
26 804 rundll32.exe
29 804 rundll32.exe
30 804 rundll32.exe
Loads dropped DLL 1 IoCs

Processes:

rundll32.exe

pid process

804 rundll32.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

pid	process
804	rundll32.exe

Suspicious use of WriteProcessMemory 5 IoCs

Processes:

wscript.exerundll32.exe

description	pid	process	target process
PID 4056 wrote to memory of 512	4056	wscript.exe	rundll32.exe
PID 4056 wrote to memory of 512	4056	wscript.exe	rundll32.exe
PID 512 wrote to memory of 804	512	rundll32.exe	rundll32.exe
PID 512 wrote to memory of 804	512	rundll32.exe	rundll32.exe
PID 512 wrote to memory of 804	512	rundll32.exe	rundll32.exe

C:\Windows\System32\rundll32.exe
"C:\Windows\System32\rundll32.exe" C:\Users\Admin\AppData\Local\Temp\OUV6VD~1.ZK,TOxNKCZjUHCfTf9D
2⤵
- Suspicious use of WriteProcessMemory
PID:512

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

C:\Users\Admin\AppData\Local\Temp\OUV6VD~1.ZK
MD5
6b760fbbefa7f8dd1daaa93ebc38725a

SHA1
81841f24244485dae1c1834df3e544893d258f06

SHA256
c564dcc24fa9909a4482feb46d52fa96869a2ad6c8c87b5cbeee19b9b36a0ff6

SHA512
6ea91469538c40dada22b66373da0deb57f48d9d535e5ebd8199b5074a26c93a297386389a58468032dec1aef36423271d7ffaf84feba772b531c9ccd46fc68a

Download Submit
\Users\Admin\AppData\Local\Temp\OUV6VD~1.ZK
MD5
6b760fbbefa7f8dd1daaa93ebc38725a

SHA1
81841f24244485dae1c1834df3e544893d258f06

SHA256
c564dcc24fa9909a4482feb46d52fa96869a2ad6c8c87b5cbeee19b9b36a0ff6

SHA512
6ea91469538c40dada22b66373da0deb57f48d9d535e5ebd8199b5074a26c93a297386389a58468032dec1aef36423271d7ffaf84feba772b531c9ccd46fc68a

Download Submit
memory/512-118-0x0000000000000000-mapping.dmp

Download
memory/804-120-0x0000000000000000-mapping.dmp

Download
memory/804-122-0x0000000074250000-0x000000007428A000-memory.dmp

Filesize
232KB

Download
memory/804-124-0x0000000002EB0000-0x0000000002F5E000-memory.dmp

Filesize
696KB

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