stormser | cd794488582cbc1faceaca738736bb728e8ef5dee7c4b2e20a53039b93533a5e

General

Target
2026-10-16_8defe0c6468a19bbc303034f880ba367_elex_wannacry.exe
Size 60KB
Sample261017-phzbpsez3n
SHA256 cd794488582cbc1faceaca738736bb728e8ef5dee7c4b2e20a53039b93533a5e
MD5 8defe0c6468a19bbc303034f880ba367
SHA1 e26dbb3e3acd51be54078aafc00cb7bc77a4aa8d
SHA512 39a0f707b768c0d00e070b28b900fbf1714d953e6907054e917404d1d4f01d2a2c8c0619bede521a0a8c3edc8123a2afd4df4cf5df766a171874e251d2a0aa5b
SSDEEP 192:pbOzawOs81elJHsc45CcRZOgtShcWaOT2QLrCqwFY04/CFxyNhoy5t:pbLwOs8AHsc4sMfwhKQLro34/CFsrd
TLSH
T1CD5308834BEE5CF2F791123108798BB9927B99C4910EBEDFBB90CD150037292E53A10B
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 4 IoCs

resource	yara_rule
behavioral1/files/0x0007000000024384-2.dat	family_stormser
behavioral1/files/0x000a0000000242cc-6.dat	family_stormser
behavioral1/files/0x000800000002438c-10.dat	family_stormser
behavioral1/files/0x000b0000000242cc-15.dat	family_stormser

Boot or Logon Autostart Execution: Active Setup 2 TTPs 8 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\{BFA0CBFD-0EAC-4c7a-A3FB-182681CF40A0}\stubpath = "C:\\Windows\\{BFA0CBFD-0EAC-4c7a-A3FB-182681CF40A0}.exe"	{DA4AFB61-84CE-4300-9249-6BF526C5F108}.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{FA996B78-922C-4079-8919-A2603B41F43C}	2026-10-16_8defe0c6468a19bbc303034f880ba367_elex_wannacry.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{FA996B78-922C-4079-8919-A2603B41F43C}\stubpath = "C:\\Windows\\{FA996B78-922C-4079-8919-A2603B41F43C}.exe"	2026-10-16_8defe0c6468a19bbc303034f880ba367_elex_wannacry.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{769A6F0C-9CB6-4d8e-BB53-CC30AED27C30}	{FA996B78-922C-4079-8919-A2603B41F43C}.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{769A6F0C-9CB6-4d8e-BB53-CC30AED27C30}\stubpath = "C:\\Windows\\{769A6F0C-9CB6-4d8e-BB53-CC30AED27C30}.exe"	{FA996B78-922C-4079-8919-A2603B41F43C}.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{DA4AFB61-84CE-4300-9249-6BF526C5F108}	{769A6F0C-9CB6-4d8e-BB53-CC30AED27C30}.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{DA4AFB61-84CE-4300-9249-6BF526C5F108}\stubpath = "C:\\Windows\\{DA4AFB61-84CE-4300-9249-6BF526C5F108}.exe"	{769A6F0C-9CB6-4d8e-BB53-CC30AED27C30}.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{BFA0CBFD-0EAC-4c7a-A3FB-182681CF40A0}	{DA4AFB61-84CE-4300-9249-6BF526C5F108}.exe

Executes dropped EXE 4 IoCs

pid	Process
4112	{FA996B78-922C-4079-8919-A2603B41F43C}.exe
3848	{769A6F0C-9CB6-4d8e-BB53-CC30AED27C30}.exe
1828	{DA4AFB61-84CE-4300-9249-6BF526C5F108}.exe
4732	{BFA0CBFD-0EAC-4c7a-A3FB-182681CF40A0}.exe

Drops file in Windows directory 4 IoCs

description	ioc	Process
File created	C:\Windows\{FA996B78-922C-4079-8919-A2603B41F43C}.exe	2026-10-16_8defe0c6468a19bbc303034f880ba367_elex_wannacry.exe
File created	C:\Windows\{769A6F0C-9CB6-4d8e-BB53-CC30AED27C30}.exe	{FA996B78-922C-4079-8919-A2603B41F43C}.exe
File created	C:\Windows\{DA4AFB61-84CE-4300-9249-6BF526C5F108}.exe	{769A6F0C-9CB6-4d8e-BB53-CC30AED27C30}.exe
File created	C:\Windows\{BFA0CBFD-0EAC-4c7a-A3FB-182681CF40A0}.exe	{DA4AFB61-84CE-4300-9249-6BF526C5F108}.exe

Executes a command shell one-liner 1 TTPs 4 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
344	cmd.exe
4232	cmd.exe
2312	cmd.exe
4492	cmd.exe

System Location Discovery: System Language Discovery 1 TTPs 9 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	{769A6F0C-9CB6-4d8e-BB53-CC30AED27C30}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{DA4AFB61-84CE-4300-9249-6BF526C5F108}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{BFA0CBFD-0EAC-4c7a-A3FB-182681CF40A0}.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	2026-10-16_8defe0c6468a19bbc303034f880ba367_elex_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{FA996B78-922C-4079-8919-A2603B41F43C}.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	380	2026-10-16_8defe0c6468a19bbc303034f880ba367_elex_wannacry.exe
Token: SeIncBasePriorityPrivilege	4112	{FA996B78-922C-4079-8919-A2603B41F43C}.exe
Token: SeIncBasePriorityPrivilege	3848	{769A6F0C-9CB6-4d8e-BB53-CC30AED27C30}.exe
Token: SeIncBasePriorityPrivilege	1828	{DA4AFB61-84CE-4300-9249-6BF526C5F108}.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 380 wrote to memory of 4112	380	2026-10-16_8defe0c6468a19bbc303034f880ba367_elex_wannacry.exe	96
PID 380 wrote to memory of 344	380	2026-10-16_8defe0c6468a19bbc303034f880ba367_elex_wannacry.exe	97
PID 4112 wrote to memory of 3848	4112	{FA996B78-922C-4079-8919-A2603B41F43C}.exe	98
PID 4112 wrote to memory of 4232	4112	{FA996B78-922C-4079-8919-A2603B41F43C}.exe	99
PID 3848 wrote to memory of 1828	3848	{769A6F0C-9CB6-4d8e-BB53-CC30AED27C30}.exe	102
PID 3848 wrote to memory of 2312	3848	{769A6F0C-9CB6-4d8e-BB53-CC30AED27C30}.exe	103
PID 1828 wrote to memory of 4732	1828	{DA4AFB61-84CE-4300-9249-6BF526C5F108}.exe	104
PID 1828 wrote to memory of 4492	1828	{DA4AFB61-84CE-4300-9249-6BF526C5F108}.exe	105

C:\Users\Admin\AppData\Local\Temp\2026-10-16_8defe0c6468a19bbc303034f880ba367_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-10-16_8defe0c6468a19bbc303034f880ba367_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:380
- C:\Windows\{FA996B78-922C-4079-8919-A2603B41F43C}.exe
  C:\Windows\{FA996B78-922C-4079-8919-A2603B41F43C}.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:4112
- - C:\Windows\{769A6F0C-9CB6-4d8e-BB53-CC30AED27C30}.exe
    C:\Windows\{769A6F0C-9CB6-4d8e-BB53-CC30AED27C30}.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:3848
  - - C:\Windows\{DA4AFB61-84CE-4300-9249-6BF526C5F108}.exe
      C:\Windows\{DA4AFB61-84CE-4300-9249-6BF526C5F108}.exe
      4⤵
      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:1828
    - - C:\Windows\{BFA0CBFD-0EAC-4c7a-A3FB-182681CF40A0}.exe
        
        C:\Windows\{BFA0CBFD-0EAC-4c7a-A3FB-182681CF40A0}.exe
        5⤵
        Executes dropped EXE
        System Location Discovery: System Language Discovery
        
        PID:4732
    - - C:\Windows\SysWOW64\cmd.exe
        
        C:\Windows\system32\cmd.exe /c del C:\Windows\{DA4AF~1.EXE > nul
        5⤵
        Executes a command shell one-liner
        System Location Discovery: System Language Discovery
        
        PID:4492
  - - C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c del C:\Windows\{769A6~1.EXE > nul
      4⤵
      Executes a command shell one-liner
      System Location Discovery: System Language Discovery
      PID:2312
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c del C:\Windows\{FA996~1.EXE > nul
    3⤵
    - Executes a command shell one-liner
    - System Location Discovery: System Language Discovery
    PID:4232
- 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:344

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

{769A6F0C-9CB6-4d8e-BB53-CC30AED27C30}.exe

Path C:\Windows\{769A6F0C-9CB6-4d8e-BB53-CC30AED27C30}.exe
Size 60KB
SHA256 382b44afafd8b0b1480e0501d7aa504f71b6c3aab1077cd6bb4de18b4a76f111
MD5 c49b446e010de86a505ca53a2f452522
SHA1 f3d0b76c3ac8b372c7a7514d0ee264c81af41367
SHA512 997f844a8da6ac9d1afb3b490be5613d78b429106f2e8de0db7e46515a27589d7b8deb3f78becd63a0735b03709ac8977b3ef42144c18137eb28e1234c672d2a
SSDEEP 192:pbOzawOs81elJHsc45CcRZOgtShcWaOT2QLrCqwYvqY04/CFxyNhoy5t:pbLwOs8AHsc4sMfwhKQLroh4/CFsrd
TLSH
T1655308834BEE5CF2F791113108798AB9927B99D4910EBEDFBB90CD150037292E93A10B
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

{BFA0CBFD-0EAC-4c7a-A3FB-182681CF40A0}.exe

Path C:\Windows\{BFA0CBFD-0EAC-4c7a-A3FB-182681CF40A0}.exe
Size 60KB
SHA256 efc90767650bd3668f2b2c17596ce26efb879c92d55e26467750361d04afed1a
MD5 f602cc9c5a4e2c4c1f161f688ac1bb26
SHA1 79fecd6ab730c6fb6f705fbb9dd28ab61ffa1b40
SHA512 026eb96aa021565e93c2479f9e36d91ce4e2f55ad2e2948b0b22fa5acd08e11cc7d4487f700846e5677e6f6917cf969536cddb868717450dd8ee627aebe1862e
SSDEEP 192:pbOzawOs81elJHsc45CcRZOgtShcWaOT2QLrCqwYzY04/CFxyNhoy5t:pbLwOs8AHsc4sMfwhKQLroYV4/CFsrd
TLSH
T1605308834BEE5CF2F791113108798AB9927B99D4950EBEDFBF90CD150037292E53A10B
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

{DA4AFB61-84CE-4300-9249-6BF526C5F108}.exe

Path C:\Windows\{DA4AFB61-84CE-4300-9249-6BF526C5F108}.exe
Size 60KB
SHA256 84c4f3f5a5ba6dfecc68ca41a15228c059b8689948d5df41571d1064a43c643c
MD5 a4dac46ea2bf8bcbfb3a834e4edb6132
SHA1 edc5e0ef9b6499b9cb9c85b55c567e1e20e11693
SHA512 26d4626485452896ecc555cc3d69f13959b5e60042a4893953f916529b30cfd2a3b3f980b62548bd4b1b75c1cecc62a2a52ff11c0dd72027020fb12bc75a619e
SSDEEP 192:pbOzawOs81elJHsc45CcRZOgtShcWaOT2QLrCqwROY04/CFxyNhoy5t:pbLwOs8AHsc4sMfwhKQLroR04/CFsrd
TLSH
T1825309834BDE5CF2F791113108794AB9927B99C4950EBEDFBF90CD154037292E53A10B
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

{FA996B78-922C-4079-8919-A2603B41F43C}.exe

Path C:\Windows\{FA996B78-922C-4079-8919-A2603B41F43C}.exe
Size 60KB
SHA256 550c9f4506e85254659e8bd925ce1765eae83245259e4cb7f75b69effa269f2a
MD5 0b555a116871f9b3c41c63a15ea76ce8
SHA1 531df30b712175d3e872a2efec72f2bf122d58d5
SHA512 1f6168b97b537d1d534474cd962f4fe2ebb4b37b41e380ffe3a4dba2c6f34af659d5b0430d8fbc4851497954c290833922a656e713a468f7b7a8c0da3db2aa9c
SSDEEP 192:pbOzawOs81elJHsc45CcRZOgtShcWaOT2QLrCqwMY04/CFxyNhoy5t:pbLwOs8AHsc4sMfwhKQLro64/CFsrd
TLSH
T1DE53F8834BEE9CF2F791113108798AB9927B99C4950EBEDFBB90CD154037292E53A10B
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

Replay Monitor

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Downloads