waski | 5fa7d8d5f063e057c9218a4b9976b07ab43d086b8b3691a97a32e961648f0a0c

Analysis

max time kernel
148s
max time network
125s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260911-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
27/10/2026, 01:05

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General

Target
2026-10-26_fd8c98f7703a6bb0f2d00f0cb0f74292_elex_wannacry.exe
Size 20KB
Sample261027-bfp4csxv7j
SHA256 5fa7d8d5f063e057c9218a4b9976b07ab43d086b8b3691a97a32e961648f0a0c
MD5 fd8c98f7703a6bb0f2d00f0cb0f74292
SHA1 138e9859a159bafe1bed8acb41d2d84891f49438
SHA512 739fb5465747d44b04842aabe544a3199af0f559fcabb0fbcc9c41469e78be48367e680f2392da93b3ff920c3eab609b112b7a346034a3a5706bc4151a910630
SSDEEP 384:uTQWckBeEd6ml1pcg7F3Gi+CW6H7s9Pj4:uxckEEd62J7F3Gig6HIlj4
TLSH
T1689241396FD51D73E3BBD7B285F7C1C6A934B0277A035D2E80861B491C23E12AD91A8D
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

discovery downloader waski

Malware Config

Signatures

Family: Waski
Waski is a trojan downloader written in C++.
downloader waski

Detects Waski payload 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000001b2d6-3.dat	family_waski

Executes dropped EXE 1 IoCs

pid	Process
3276	codecsupdater.exe

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

System Information Discovery
T1082

Reads the TCP/IP host and domain name from the registry 1 TTPs 2 IoCs

The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.

discovery

System Network Configuration Discovery

T1016

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Hostname	codecsupdater.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Domain	codecsupdater.exe

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-10-26_fd8c98f7703a6bb0f2d00f0cb0f74292_elex_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	codecsupdater.exe

Suspicious use of WriteProcessMemory 1 IoCs

description	pid	Process	procid_target
PID 4652 wrote to memory of 3276	4652	2026-10-26_fd8c98f7703a6bb0f2d00f0cb0f74292_elex_wannacry.exe	90

C:\Users\Admin\AppData\Local\Temp\2026-10-26_fd8c98f7703a6bb0f2d00f0cb0f74292_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-10-26_fd8c98f7703a6bb0f2d00f0cb0f74292_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4652
- C:\Users\Admin\AppData\Local\Temp\codecsupdater.exe
  "C:\Users\Admin\AppData\Local\Temp\codecsupdater.exe"
  2⤵
  - Executes dropped EXE
  - Reads the TCP/IP host and domain name from the registry
  - System Location Discovery: System Language Discovery
  PID:3276

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

System Network Configuration Discovery

T1016

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

codecsupdater.exe

Path C:\Users\Admin\AppData\Local\Temp\codecsupdater.exe
Size 20KB
SHA256 8e5e497b8872c7b257bdd4c72baa883089137835d2bdae7a64c7f641e3f5ac65
MD5 badb4319049297e9d64dd40a04639281
SHA1 a84e5708e66d7f905aa0216f8641b7729d222f84
SHA512 cd06102bfc40bb2c7987d867c33ee448917c10f5d9023e1974f0858da70d111e13a907dbdd0169b3a9879fc8e99bfcb13dc50c4729671f7cf22fd22379e45f0c
SSDEEP 384:uTQWckBeEd6ml1pcg7F3Gi+CW6H7s9Pj8:uxckEEd62J7F3Gig6HIlj8
TLSH
T1AC9241396FD51D73E3BBD7B285F7C1C6A934B0277A035D2E80861B491C23E12AD91A8D
MD5 SHA1 SHA512 SSDEEP TLSH

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