stormser | 17ee1d1ffaf33e80f100b6c276fc49a98853e7a98f573fe25d71537c7259dca4

General

Target
2026-10-22_99a9de3a7c1bd21f8041ba93869885a2_elex_wannacry.exe
Size 59KB
Sample261024-d34ldafv7s
SHA256 17ee1d1ffaf33e80f100b6c276fc49a98853e7a98f573fe25d71537c7259dca4
MD5 99a9de3a7c1bd21f8041ba93869885a2
SHA1 b2433d16a8fb98a144e391890cbd2e95a1b79b7c
SHA512 826e86c71e0b54a677877e01f03e9aa8435006ef3b9859ad73b4fb5a09915f2add2cdd2242133ab5f1db0d01e018a442cd6a09c2dc1e4c047418f1374495e2be
SSDEEP 192:ebOzawOs81elJHsc45CcRZOgtShcWaOT2QLrCqwEvY04/CFxyNhoy5t:ebLwOs8AHsc4sMfwhKQLroM4/CFsrd
TLSH
T12643F7834BEE9CF2F791113108798AB9927B99D4950EBEDFBF90CD154037292E53A10B
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

discovery execution 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 2 IoCs

resource	yara_rule
behavioral1/files/0x000700000002457f-2.dat	family_stormser
behavioral1/files/0x0008000000024570-5.dat	family_stormser

Boot or Logon Autostart Execution: Active Setup 2 TTPs 4 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\{50B40747-C949-468b-A20F-A0790BE971B8}	2026-10-22_99a9de3a7c1bd21f8041ba93869885a2_elex_wannacry.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{50B40747-C949-468b-A20F-A0790BE971B8}\stubpath = "C:\\Windows\\{50B40747-C949-468b-A20F-A0790BE971B8}.exe"	2026-10-22_99a9de3a7c1bd21f8041ba93869885a2_elex_wannacry.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{295E9148-B866-4c8a-B6A5-00BEA27983DF}	{50B40747-C949-468b-A20F-A0790BE971B8}.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{295E9148-B866-4c8a-B6A5-00BEA27983DF}\stubpath = "C:\\Windows\\{295E9148-B866-4c8a-B6A5-00BEA27983DF}.exe"	{50B40747-C949-468b-A20F-A0790BE971B8}.exe

Executes dropped EXE 2 IoCs

pid	Process
3236	{50B40747-C949-468b-A20F-A0790BE971B8}.exe
2992	{295E9148-B866-4c8a-B6A5-00BEA27983DF}.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\{50B40747-C949-468b-A20F-A0790BE971B8}.exe	2026-10-22_99a9de3a7c1bd21f8041ba93869885a2_elex_wannacry.exe
File created	C:\Windows\{295E9148-B866-4c8a-B6A5-00BEA27983DF}.exe	{50B40747-C949-468b-A20F-A0790BE971B8}.exe

Executes a command shell one-liner 1 TTPs 2 IoCs

Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

execution

Windows Command Shell

T1059.003

pid	Process
4264	cmd.exe
4744	cmd.exe

System Location Discovery: System Language Discovery 1 TTPs 5 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	2026-10-22_99a9de3a7c1bd21f8041ba93869885a2_elex_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{50B40747-C949-468b-A20F-A0790BE971B8}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{295E9148-B866-4c8a-B6A5-00BEA27983DF}.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	2704	2026-10-22_99a9de3a7c1bd21f8041ba93869885a2_elex_wannacry.exe
Token: SeIncBasePriorityPrivilege	3236	{50B40747-C949-468b-A20F-A0790BE971B8}.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2704 wrote to memory of 3236	2704	2026-10-22_99a9de3a7c1bd21f8041ba93869885a2_elex_wannacry.exe	95
PID 2704 wrote to memory of 4264	2704	2026-10-22_99a9de3a7c1bd21f8041ba93869885a2_elex_wannacry.exe	96
PID 3236 wrote to memory of 2992	3236	{50B40747-C949-468b-A20F-A0790BE971B8}.exe	97
PID 3236 wrote to memory of 4744	3236	{50B40747-C949-468b-A20F-A0790BE971B8}.exe	98

C:\Users\Admin\AppData\Local\Temp\2026-10-22_99a9de3a7c1bd21f8041ba93869885a2_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-10-22_99a9de3a7c1bd21f8041ba93869885a2_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:2704
- C:\Windows\{50B40747-C949-468b-A20F-A0790BE971B8}.exe
  C:\Windows\{50B40747-C949-468b-A20F-A0790BE971B8}.exe
  2⤵
  - Boot or Logon Autostart Execution: Active Setup
  - Executes dropped EXE
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3236
- - C:\Windows\{295E9148-B866-4c8a-B6A5-00BEA27983DF}.exe
    C:\Windows\{295E9148-B866-4c8a-B6A5-00BEA27983DF}.exe
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:2992
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c del C:\Windows\{50B40~1.EXE > nul
    3⤵
    - Executes a command shell one-liner
    - System Location Discovery: System Language Discovery
    PID:4744
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c del C:\Users\Admin\AppData\Local\Temp\2026-1~1.EXE > nul
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  PID:4264

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

Windows Command Shell

1

T1059.003

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

{295E9148-B866-4c8a-B6A5-00BEA27983DF}.exe

Path C:\Windows\{295E9148-B866-4c8a-B6A5-00BEA27983DF}.exe
Size 59KB
SHA256 bbaaabc014b482cdae667cef2d511fc05b4c9d5b3dacb99bbe83f84d288dab6d
MD5 dedcfd39d5cf7ad0374db6e7a4010c71
SHA1 4723bdffa28676fa4a4538645ea9f76f94268d44
SHA512 5daf24eb73ad06ff66133387b40d933d5dcfe2830292f4ae9f6edf197b56cbeb337c4b8e7fc34543265b99f394df2a80f2ba4c54979fa217d142422ddc87ad40
SSDEEP 192:ebOzawOs81elJHsc45CcRZOgtShcWaOT2QLrCqwEQIY04/CFxyNhoy5t:ebLwOs8AHsc4sMfwhKQLroA4/CFsrd
TLSH
T13543F8834BDE9CF2F791113108794AB9927BA9C4950EBEDFBF90CD154037292E53A10B
MD5 SHA1 SHA512 SSDEEP TLSH

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{50B40747-C949-468b-A20F-A0790BE971B8}.exe

Path C:\Windows\{50B40747-C949-468b-A20F-A0790BE971B8}.exe
Size 59KB
SHA256 13cd2f0ff2d14296b37d3e9abae7a87c3c1a168bef8e4aa7f475378e2143b9dd
MD5 c9c0b15d76bb4fc3e78fcdb722683145
SHA1 e5b95182ae61aa7bffffaf46b0bc80b1f5ebca71
SHA512 104d585d864a9275ec4046f558c6ada241fd13a9741d005250fb0cb3059f542fc271c5c0c91edae1338bb8cc4456dea9d374a187eef2a49e728106b53ed83eb4
SSDEEP 192:ebOzawOs81elJHsc45CcRZOgtShcWaOT2QLrCqwt0Y04/CFxyNhoy5t:ebLwOs8AHsc4sMfwhKQLrotC4/CFsrd
TLSH
T13743F8834BEE5CF2F791117108798AB9927B9AC4950EBEDFBF90CD550037292E53A10B
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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