locky | 0881cd733dd584863daaf87341e4d0c38815a5aa62a9dc7f2608af2a3f1dc3e8

Analysis

Target

20161205_eb2df1e72525f9d332e3179c4d432c70.js
Size

13KB
MD5

4962f8c69418e2a963a2efcf37718d8d
SHA1

aeab75634c68d8505e9f64dcabb1e415e9f53840
SHA256

0881cd733dd584863daaf87341e4d0c38815a5aa62a9dc7f2608af2a3f1dc3e8
SHA512

c2cfc24d90cc8bee452f8cf10d87b038221c9b0c7a5ea5733ccd2ce7ea74b829f15116695f0315f6765adf9aa1922653ecbda249f66aaef9e9b3fa98e2664cd8

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

8 2896 wscript.exe
26 3496 rundll32.exe
34 3496 rundll32.exe
35 3496 rundll32.exe
39 3496 rundll32.exe
40 3496 rundll32.exe
Loads dropped DLL 1 IoCs

Processes:

rundll32.exe

pid process

3496 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
3496	rundll32.exe

Suspicious use of WriteProcessMemory 5 IoCs

Processes:

wscript.exerundll32.exe

description	pid	process	target process
PID 2896 wrote to memory of 2368	2896	wscript.exe	rundll32.exe
PID 2896 wrote to memory of 2368	2896	wscript.exe	rundll32.exe
PID 2368 wrote to memory of 3496	2368	rundll32.exe	rundll32.exe
PID 2368 wrote to memory of 3496	2368	rundll32.exe	rundll32.exe
PID 2368 wrote to memory of 3496	2368	rundll32.exe	rundll32.exe

C:\Windows\System32\rundll32.exe
"C:\Windows\System32\rundll32.exe" C:\Users\Admin\AppData\Local\Temp\Z0MEK8~1.ZK,TOxNKCZjUHCfTf9D
2⤵
- Suspicious use of WriteProcessMemory
PID:2368

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

C:\Users\Admin\AppData\Local\Temp\Z0MEK8~1.ZK
MD5
6b760fbbefa7f8dd1daaa93ebc38725a

SHA1
81841f24244485dae1c1834df3e544893d258f06

SHA256
c564dcc24fa9909a4482feb46d52fa96869a2ad6c8c87b5cbeee19b9b36a0ff6

SHA512
6ea91469538c40dada22b66373da0deb57f48d9d535e5ebd8199b5074a26c93a297386389a58468032dec1aef36423271d7ffaf84feba772b531c9ccd46fc68a

Download Submit
\Users\Admin\AppData\Local\Temp\Z0MEK8~1.ZK
MD5
6b760fbbefa7f8dd1daaa93ebc38725a

SHA1
81841f24244485dae1c1834df3e544893d258f06

SHA256
c564dcc24fa9909a4482feb46d52fa96869a2ad6c8c87b5cbeee19b9b36a0ff6

SHA512
6ea91469538c40dada22b66373da0deb57f48d9d535e5ebd8199b5074a26c93a297386389a58468032dec1aef36423271d7ffaf84feba772b531c9ccd46fc68a

Download Submit
memory/2368-118-0x0000000000000000-mapping.dmp

Download
memory/3496-120-0x0000000000000000-mapping.dmp

Download
memory/3496-122-0x00000000738F0000-0x000000007392A000-memory.dmp

Filesize
232KB

Download
memory/3496-124-0x0000000000F60000-0x0000000000F61000-memory.dmp

Filesize
4KB

Download