stormser | 397683a67d3b614d18e69fa15cd401ccb4bf00a10df7604385a91d5f57a0794a

General

Target
2026-10-22_b86469f778c205efcb0d547f72b2c8ce_elex_wannacry.exe
Size 60KB
Sample261023-29qvvs1vbw
SHA256 397683a67d3b614d18e69fa15cd401ccb4bf00a10df7604385a91d5f57a0794a
MD5 b86469f778c205efcb0d547f72b2c8ce
SHA1 e0bb16feee0aea3c393cd96a1ccc54324a128ea8
SHA512 caf7e6b1dbb7e8e993d58b965fdbc9e4bfb78094698e4f5248525127637fe35b2289138ff277d05b6b943bb26a1af8cce89862f26f656e09e22757c16951a66e
SSDEEP 192:pbOzawOs81elJHsc45CcRZOgtShcWaOT2QLrCqwtY04/CFxyNhoy5t:pbLwOs8AHsc4sMfwhKQLro/4/CFsrd
TLSH
T1CD53F8834BEE9CF2F791117108798AB9927B99C4950EBEDFBF90CD154037292E53A10B
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 3 IoCs

resource	yara_rule
behavioral1/files/0x000f0000000245de-2.dat	family_stormser
behavioral1/files/0x00090000000245cf-5.dat	family_stormser
behavioral1/files/0x00080000000245e6-10.dat	family_stormser

Boot or Logon Autostart Execution: Active Setup 2 TTPs 6 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
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{7A3A480D-6B07-45d5-B9E0-3E7636854632}\stubpath = "C:\\Windows\\{7A3A480D-6B07-45d5-B9E0-3E7636854632}.exe"	2026-10-22_b86469f778c205efcb0d547f72b2c8ce_elex_wannacry.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{531D4812-6D02-41dd-9F66-F4BFA7E9B388}	{7A3A480D-6B07-45d5-B9E0-3E7636854632}.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{531D4812-6D02-41dd-9F66-F4BFA7E9B388}\stubpath = "C:\\Windows\\{531D4812-6D02-41dd-9F66-F4BFA7E9B388}.exe"	{7A3A480D-6B07-45d5-B9E0-3E7636854632}.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{70C5C4CB-1D73-4cd7-BB80-4A2A272CC461}	{531D4812-6D02-41dd-9F66-F4BFA7E9B388}.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{70C5C4CB-1D73-4cd7-BB80-4A2A272CC461}\stubpath = "C:\\Windows\\{70C5C4CB-1D73-4cd7-BB80-4A2A272CC461}.exe"	{531D4812-6D02-41dd-9F66-F4BFA7E9B388}.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{7A3A480D-6B07-45d5-B9E0-3E7636854632}	2026-10-22_b86469f778c205efcb0d547f72b2c8ce_elex_wannacry.exe

Executes dropped EXE 3 IoCs

pid	Process
2436	{7A3A480D-6B07-45d5-B9E0-3E7636854632}.exe
212	{531D4812-6D02-41dd-9F66-F4BFA7E9B388}.exe
3316	{70C5C4CB-1D73-4cd7-BB80-4A2A272CC461}.exe

Drops file in Windows directory 3 IoCs

description	ioc	Process
File created	C:\Windows\{7A3A480D-6B07-45d5-B9E0-3E7636854632}.exe	2026-10-22_b86469f778c205efcb0d547f72b2c8ce_elex_wannacry.exe
File created	C:\Windows\{531D4812-6D02-41dd-9F66-F4BFA7E9B388}.exe	{7A3A480D-6B07-45d5-B9E0-3E7636854632}.exe
File created	C:\Windows\{70C5C4CB-1D73-4cd7-BB80-4A2A272CC461}.exe	{531D4812-6D02-41dd-9F66-F4BFA7E9B388}.exe

Executes a command shell one-liner 1 TTPs 3 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
204	cmd.exe
4640	cmd.exe

System Location Discovery: System Language Discovery 1 TTPs 7 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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{531D4812-6D02-41dd-9F66-F4BFA7E9B388}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{70C5C4CB-1D73-4cd7-BB80-4A2A272CC461}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-10-22_b86469f778c205efcb0d547f72b2c8ce_elex_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{7A3A480D-6B07-45d5-B9E0-3E7636854632}.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	848	2026-10-22_b86469f778c205efcb0d547f72b2c8ce_elex_wannacry.exe
Token: SeIncBasePriorityPrivilege	2436	{7A3A480D-6B07-45d5-B9E0-3E7636854632}.exe
Token: SeIncBasePriorityPrivilege	212	{531D4812-6D02-41dd-9F66-F4BFA7E9B388}.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 848 wrote to memory of 2436	848	2026-10-22_b86469f778c205efcb0d547f72b2c8ce_elex_wannacry.exe	93
PID 848 wrote to memory of 4264	848	2026-10-22_b86469f778c205efcb0d547f72b2c8ce_elex_wannacry.exe	94
PID 2436 wrote to memory of 212	2436	{7A3A480D-6B07-45d5-B9E0-3E7636854632}.exe	95
PID 2436 wrote to memory of 204	2436	{7A3A480D-6B07-45d5-B9E0-3E7636854632}.exe	96
PID 212 wrote to memory of 3316	212	{531D4812-6D02-41dd-9F66-F4BFA7E9B388}.exe	100
PID 212 wrote to memory of 4640	212	{531D4812-6D02-41dd-9F66-F4BFA7E9B388}.exe	101

C:\Users\Admin\AppData\Local\Temp\2026-10-22_b86469f778c205efcb0d547f72b2c8ce_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-10-22_b86469f778c205efcb0d547f72b2c8ce_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:848
- C:\Windows\{7A3A480D-6B07-45d5-B9E0-3E7636854632}.exe
  C:\Windows\{7A3A480D-6B07-45d5-B9E0-3E7636854632}.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:2436
- - C:\Windows\{531D4812-6D02-41dd-9F66-F4BFA7E9B388}.exe
    C:\Windows\{531D4812-6D02-41dd-9F66-F4BFA7E9B388}.exe
    3⤵
    - 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:212
  - - C:\Windows\{70C5C4CB-1D73-4cd7-BB80-4A2A272CC461}.exe
      C:\Windows\{70C5C4CB-1D73-4cd7-BB80-4A2A272CC461}.exe
      4⤵
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      PID:3316
  - - C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c del C:\Windows\{531D4~1.EXE > nul
      4⤵
      Executes a command shell one-liner
      System Location Discovery: System Language Discovery
      PID:4640
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c del C:\Windows\{7A3A4~1.EXE > nul
    3⤵
    - Executes a command shell one-liner
    - System Location Discovery: System Language Discovery
    PID:204
- 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

{531D4812-6D02-41dd-9F66-F4BFA7E9B388}.exe

Path C:\Windows\{531D4812-6D02-41dd-9F66-F4BFA7E9B388}.exe
Size 60KB
SHA256 43c42a438e63d69e5c31a4c88a5f25afaacd3a013812b288fcda384dc8b21c3f
MD5 d1f85ecbf4ee27e1d8597d3ade536fc0
SHA1 abbee9ddbdb2eb7ebac86e3acb35cc6e19de3120
SHA512 9f16cb79aa339c33602932e43edda98d3be1047cee19dafb29d80cc1966da0a904d46bbf6a5861ed63baa5f324f58c9f7e7e542db07a052d32bf43681cf59a6e
SSDEEP 192:pbOzawOs81elJHsc45CcRZOgtShcWaOT2QLrCqwBY04/CFxyNhoy5t:pbLwOs8AHsc4sMfwhKQLroz4/CFsrd
TLSH
T1015309834BEE9CF2F791117108798AB9927B99C4910EBEDFBF90CD150037292E53A10B
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

{70C5C4CB-1D73-4cd7-BB80-4A2A272CC461}.exe

Path C:\Windows\{70C5C4CB-1D73-4cd7-BB80-4A2A272CC461}.exe
Size 60KB
SHA256 8090181a2f61898d2f47e7bba15d30bbf4d43c43c87ce849165ca3588c40052c
MD5 a150d792cb7976492c24fae2544eeb7c
SHA1 461d8a6a6f07aeb9cc1f66e529151182187bc52c
SHA512 f3a82960466bfdb3088a01537a00fbbd930382424d1d3ef04053a3c95ef867d1935f7b6d1b6edfe01e6c5d7add45292dc6d9932ec5fe98a2a7b685d431c80302
SSDEEP 192:pbOzawOs81elJHsc45CcRZOgtShcWaOT2QLrCqwgY04/CFxyNhoy5t:pbLwOs8AHsc4sMfwhKQLrou4/CFsrd
TLSH
T19C5308834BEE9CF2F791113108798AB9927B99C4910EBEDFBF90CD150037292E53A10B
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

{7A3A480D-6B07-45d5-B9E0-3E7636854632}.exe

Path C:\Windows\{7A3A480D-6B07-45d5-B9E0-3E7636854632}.exe
Size 60KB
SHA256 28dbdc940bc72293886bbfe57b857d89ddf28543e7d1635f27fa91d398704c04
MD5 bb3145db2590a4623514637311d0aebb
SHA1 fe19b58f625e3ddbfd176d1ea7775b24260b86ed
SHA512 e3ed81dd84a5e36b1bcce3f0ec1c56429fa994864b4cc79dcbe32d6f25422b4945dd4ac774a5ba1d96ac7e51ea3340901452f4c3ec8f2f264956b901f7fdeda2
SSDEEP 192:pbOzawOs81elJHsc45CcRZOgtShcWaOT2QLrCqwuSY04/CFxyNhoy5t:pbLwOs8AHsc4sMfwhKQLroH4/CFsrd
TLSH
T1285308834BDE9CF2F791113108798AB9927BA9D4950EBEDFBF90CD150037292E53A10B
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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Downloads