waski | 20ce05780ef5e5de6bb22340c2321a08b9584ed172d05f309105d185b0ed0a58

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
28/09/2026, 08:27

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General

Target
2026-09-27_19c799ec4c7bb57469b243500b9ad782_elex_wannacry.exe
Size 22KB
Sample260928-kceynazs8m
SHA256 20ce05780ef5e5de6bb22340c2321a08b9584ed172d05f309105d185b0ed0a58
MD5 19c799ec4c7bb57469b243500b9ad782
SHA1 ea08b7617084bc3ed1ba15b6f5b6cd37cfaee9cd
SHA512 3baab9a580805d98b5ea581d6844b084aec216389aa30742ade7c1dac91d855af7dcd8ee504ca3d0737e533de76ae713f1fec535446d306ef747179e53445381
SSDEEP 384:uTQWckBeEd6ml1pcg7F3Gih1uTRTcljilermJiMiA2r7a9AH:uxckEEd62J7F3Gih1uTRTcljilViM8r5
TLSH
T160A220395FE419B3E3BBD6B685F685C6B830B4373A03591E408607891C23F16EDA1B5D
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/0x000f00000001b869-4.dat	family_waski

Executes dropped EXE 1 IoCs

pid	Process
808	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	2026-09-27_19c799ec4c7bb57469b243500b9ad782_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 5528 wrote to memory of 808	5528	2026-09-27_19c799ec4c7bb57469b243500b9ad782_elex_wannacry.exe	89

C:\Users\Admin\AppData\Local\Temp\2026-09-27_19c799ec4c7bb57469b243500b9ad782_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-09-27_19c799ec4c7bb57469b243500b9ad782_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5528
- 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:808

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 22KB
SHA256 ec956c6f60e4297359d30ea11137b5718b615e203417d13f8df1bcea2a4aaef8
MD5 cf5c3fb42a40ef76104a9409d055047f
SHA1 a33c8160ab34499041ae84847c64164e31091595
SHA512 9bd703cf7b58fd101e25b19fc84c52494cd3d75af1cd75d2d5a60c879f19c70d1c862ba55a9a2013ab7e26cb4ed1b740cb97ef4c97d3a9ee82c346ea4ebdd84b
SSDEEP 384:uTQWckBeEd6ml1pcg7F3Gih1uTRTcljilermJiMiA2r7a9Ax:uxckEEd62J7F3Gih1uTRTcljilViM8r/
TLSH
T1C1A220395FE419B3E3BBD6BA85F685C6B830B4373A03591E408607891C23F16EDA1B5D
MD5 SHA1 SHA512 SSDEEP TLSH

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