stormser | 1974b51d0c069886b1d9c9f6980c39fba52e68bf1e1e521c963496963cd7684a

General

Target
2026-07-01_ed6ff6aa4225a2993973e420a08e8b0a_elex_wannacry.exe
Size 59KB
Sample260701-txpg9sbx61
SHA256 1974b51d0c069886b1d9c9f6980c39fba52e68bf1e1e521c963496963cd7684a
MD5 ed6ff6aa4225a2993973e420a08e8b0a
SHA1 0b29cf7f90c92d507159c1c84247d6da33d3418f
SHA512 5ecb7f88127830858d581748e0662bd372e24a85cbbd5c6a178f0fee2831e58efa24ba37f542836869fbf2d32410e4c8f58259f9139cfc23b2177573dedcbb3d
SSDEEP 384:MbLwOs8AHsc4sMfwhKQLroKQ4/CFsrYAutg/CNl2e4WMZ:Mvw9816vhKQLrot4/wQLfwl27WMZ
TLSH
T10E439D831F9A7CF2F3860075097F97B6836B54C4D24EBE9B6FA0CC094066641E83E609
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

discovery stormser persistence worm

Malware Config

Signatures

Family: Stormser, StormDDoS, StormAttack, Stormer
Stormser aka StormDDoS, StormAttack, and Stormer is a Windows worm written in C++.
worm stormser

Detects Stormser aka Storm DDoS and StormAttack 1 IoCs

resource	yara_rule
behavioral2/files/0x000d00000001c5cb-3.dat	family_stormser

Detects Windows executables referencing non-Windows User-Agents 1 IoCs

resource	yara_rule
behavioral2/files/0x000d00000001c5cb-3.dat	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA

Boot or Logon Autostart Execution: Active Setup 2 TTPs 2 IoCs

Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

persistence

Active Setup

T1547.014

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{E8E5EC77-7BB5-4e81-B065-3450A3827F58}	2026-07-01_ed6ff6aa4225a2993973e420a08e8b0a_elex_wannacry.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{E8E5EC77-7BB5-4e81-B065-3450A3827F58}\stubpath = "C:\\Windows\\{E8E5EC77-7BB5-4e81-B065-3450A3827F58}.exe"	2026-07-01_ed6ff6aa4225a2993973e420a08e8b0a_elex_wannacry.exe

Executes dropped EXE 2 IoCs

pid	Process
1920	{E8E5EC77-7BB5-4e81-B065-3450A3827F58}.exe
5412	{E8E5EC77-7BB5-4e81-B065-3450A3827F58}.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\Windows\{E8E5EC77-7BB5-4e81-B065-3450A3827F58}.exe	2026-07-01_ed6ff6aa4225a2993973e420a08e8b0a_elex_wannacry.exe

System Location Discovery: System Language Discovery 1 TTPs 4 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	{E8E5EC77-7BB5-4e81-B065-3450A3827F58}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{E8E5EC77-7BB5-4e81-B065-3450A3827F58}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-07-01_ed6ff6aa4225a2993973e420a08e8b0a_elex_wannacry.exe

Modifies registry class 3 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\Software\Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppModel\Deployment\Package\*\S-1-5-21-1991999443-3181470666-3272020885-1000\{B147228C-244D-4EF6-9130-426C58279241}	explorer.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{A8CDFF1C-4878-43be-B5FD-F8091C1C60D0}\Instance\	explorer.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{B4BFCC3A-DB2C-424C-B029-7FE99A87C641}\Instance\	explorer.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	620	2026-07-01_ed6ff6aa4225a2993973e420a08e8b0a_elex_wannacry.exe
Token: SeShutdownPrivilege	1896	explorer.exe
Token: SeCreatePagefilePrivilege	1896	explorer.exe
Token: SeShutdownPrivilege	1896	explorer.exe
Token: SeCreatePagefilePrivilege	1896	explorer.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
4068	sihost.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 620 wrote to memory of 1920	620	2026-07-01_ed6ff6aa4225a2993973e420a08e8b0a_elex_wannacry.exe	88
PID 620 wrote to memory of 2068	620	2026-07-01_ed6ff6aa4225a2993973e420a08e8b0a_elex_wannacry.exe	89
PID 4068 wrote to memory of 1896	4068	sihost.exe	94
PID 1896 wrote to memory of 5412	1896	explorer.exe	95

C:\Users\Admin\AppData\Local\Temp\2026-07-01_ed6ff6aa4225a2993973e420a08e8b0a_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-07-01_ed6ff6aa4225a2993973e420a08e8b0a_elex_wannacry.exe"
1⤵
- Boot or Logon Autostart Execution: Active Setup
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:620
- C:\Windows\{E8E5EC77-7BB5-4e81-B065-3450A3827F58}.exe
  C:\Windows\{E8E5EC77-7BB5-4e81-B065-3450A3827F58}.exe
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:1920
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c del C:\Users\Admin\AppData\Local\Temp\2026-0~1.EXE > nul
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2068

C:\Windows\system32\sihost.exe
sihost.exe
1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:4068
- C:\Windows\explorer.exe
  explorer.exe /LOADSAVEDWINDOWS
  2⤵
  - Modifies registry class
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1896
- - C:\Windows\{E8E5EC77-7BB5-4e81-B065-3450A3827F58}.exe
    "C:\Windows\{E8E5EC77-7BB5-4e81-B065-3450A3827F58}.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:5412

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Active Setup

1

T1547.014

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Active Setup

1

T1547.014

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

{E8E5EC77-7BB5-4e81-B065-3450A3827F58}.exe

Path C:\Windows\{E8E5EC77-7BB5-4e81-B065-3450A3827F58}.exe
Size 59KB
SHA256 d86bb718a6b5f67499220bc183456adcadf9878e9d71c911e4db416be23e7624
MD5 63771df2ad7654b96b835a09ab1a1487
SHA1 e22d11b77c8149352d6ae39851631f27ce5b9db8
SHA512 5ade930a2683122da86174b9aa636901f781a708dc45dea86a477ffcf420cb881e32f552acc97c0fc6b7aaf70de5943788900048a7b8f2aa47b97052e7d0391a
SSDEEP 384:MbLwOs8AHsc4sMfwhKQLroK/4/CFsrYAutg/CNl2e4WMZ:Mvw9816vhKQLro+4/wQLfwl27WMZ
TLSH
T16B439D831FDA7CF2F3860075097F97B6876B55C4D24EBE9B6F90CC095026641E83E609
MD5 SHA1 SHA512 SSDEEP TLSH

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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Downloads