stormser | 6aaec642dd8844d5aca78616c8af6fa3360d501fcbf908c955432f8ba841e1d4

General

Target
2026-10-28_5a1adad997bf602d2e42ea7a3b3e890a_elex_wannacry.exe
Size 79KB
Sample261030-ehtfcaav4n
SHA256 6aaec642dd8844d5aca78616c8af6fa3360d501fcbf908c955432f8ba841e1d4
MD5 5a1adad997bf602d2e42ea7a3b3e890a
SHA1 3c383a6ea7cb88281ea645a3df1bb00c7bd89d55
SHA512 13b40db5ed2f83d0483bd2121cb57d3501226bea701af7ccedf0ebf6377ac5be5623e165ebd8f62ad1f904b9774922fa0c0fe33dd22aab4de92a362d20eef4e1
SSDEEP 768:4vw9816vhKQLroD4/wQzXOQ69zbjlAAX5e9zz:wEGh0oDlGizbR9Xwzz
TLSH
T193835CD38EAC4483FDD6697012B8DAA77C3E97C61604799B6B91FD5408A33C1EB3411E
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/0x00070000000243a3-2.dat	family_stormser
behavioral1/files/0x0008000000024393-6.dat	family_stormser
behavioral1/files/0x00080000000243ab-10.dat	family_stormser
behavioral1/files/0x0009000000024393-14.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\{B8348378-714B-45ca-9313-9F9287DFF07A}\stubpath = "C:\\Windows\\{B8348378-714B-45ca-9313-9F9287DFF07A}.exe"	{8BC5D589-2A4B-4049-B3AD-CD624287B833}.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{F8FFDB3D-7A04-4963-A76C-9D9472F6E162}	{B8348378-714B-45ca-9313-9F9287DFF07A}.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{F8FFDB3D-7A04-4963-A76C-9D9472F6E162}\stubpath = "C:\\Windows\\{F8FFDB3D-7A04-4963-A76C-9D9472F6E162}.exe"	{B8348378-714B-45ca-9313-9F9287DFF07A}.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{A0D51077-4A9E-4dce-9A9C-E3B06563A8BE}	{F8FFDB3D-7A04-4963-A76C-9D9472F6E162}.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{A0D51077-4A9E-4dce-9A9C-E3B06563A8BE}\stubpath = "C:\\Windows\\{A0D51077-4A9E-4dce-9A9C-E3B06563A8BE}.exe"	{F8FFDB3D-7A04-4963-A76C-9D9472F6E162}.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{8BC5D589-2A4B-4049-B3AD-CD624287B833}	2026-10-28_5a1adad997bf602d2e42ea7a3b3e890a_elex_wannacry.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{8BC5D589-2A4B-4049-B3AD-CD624287B833}\stubpath = "C:\\Windows\\{8BC5D589-2A4B-4049-B3AD-CD624287B833}.exe"	2026-10-28_5a1adad997bf602d2e42ea7a3b3e890a_elex_wannacry.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{B8348378-714B-45ca-9313-9F9287DFF07A}	{8BC5D589-2A4B-4049-B3AD-CD624287B833}.exe

Executes dropped EXE 4 IoCs

pid	Process
716	{8BC5D589-2A4B-4049-B3AD-CD624287B833}.exe
1812	{B8348378-714B-45ca-9313-9F9287DFF07A}.exe
2996	{F8FFDB3D-7A04-4963-A76C-9D9472F6E162}.exe
2212	{A0D51077-4A9E-4dce-9A9C-E3B06563A8BE}.exe

Drops file in Windows directory 4 IoCs

description	ioc	Process
File created	C:\Windows\{8BC5D589-2A4B-4049-B3AD-CD624287B833}.exe	2026-10-28_5a1adad997bf602d2e42ea7a3b3e890a_elex_wannacry.exe
File created	C:\Windows\{B8348378-714B-45ca-9313-9F9287DFF07A}.exe	{8BC5D589-2A4B-4049-B3AD-CD624287B833}.exe
File created	C:\Windows\{F8FFDB3D-7A04-4963-A76C-9D9472F6E162}.exe	{B8348378-714B-45ca-9313-9F9287DFF07A}.exe
File created	C:\Windows\{A0D51077-4A9E-4dce-9A9C-E3B06563A8BE}.exe	{F8FFDB3D-7A04-4963-A76C-9D9472F6E162}.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
3124	cmd.exe
3236	cmd.exe
4896	cmd.exe
3936	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	{8BC5D589-2A4B-4049-B3AD-CD624287B833}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{B8348378-714B-45ca-9313-9F9287DFF07A}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{F8FFDB3D-7A04-4963-A76C-9D9472F6E162}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-10-28_5a1adad997bf602d2e42ea7a3b3e890a_elex_wannacry.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	{A0D51077-4A9E-4dce-9A9C-E3B06563A8BE}.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	364	2026-10-28_5a1adad997bf602d2e42ea7a3b3e890a_elex_wannacry.exe
Token: SeIncBasePriorityPrivilege	716	{8BC5D589-2A4B-4049-B3AD-CD624287B833}.exe
Token: SeIncBasePriorityPrivilege	1812	{B8348378-714B-45ca-9313-9F9287DFF07A}.exe
Token: SeIncBasePriorityPrivilege	2996	{F8FFDB3D-7A04-4963-A76C-9D9472F6E162}.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 364 wrote to memory of 716	364	2026-10-28_5a1adad997bf602d2e42ea7a3b3e890a_elex_wannacry.exe	92
PID 364 wrote to memory of 3124	364	2026-10-28_5a1adad997bf602d2e42ea7a3b3e890a_elex_wannacry.exe	93
PID 716 wrote to memory of 1812	716	{8BC5D589-2A4B-4049-B3AD-CD624287B833}.exe	94
PID 716 wrote to memory of 3236	716	{8BC5D589-2A4B-4049-B3AD-CD624287B833}.exe	95
PID 1812 wrote to memory of 2996	1812	{B8348378-714B-45ca-9313-9F9287DFF07A}.exe	98
PID 1812 wrote to memory of 4896	1812	{B8348378-714B-45ca-9313-9F9287DFF07A}.exe	99
PID 2996 wrote to memory of 2212	2996	{F8FFDB3D-7A04-4963-A76C-9D9472F6E162}.exe	100
PID 2996 wrote to memory of 3936	2996	{F8FFDB3D-7A04-4963-A76C-9D9472F6E162}.exe	101

C:\Users\Admin\AppData\Local\Temp\2026-10-28_5a1adad997bf602d2e42ea7a3b3e890a_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-10-28_5a1adad997bf602d2e42ea7a3b3e890a_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:364
- C:\Windows\{8BC5D589-2A4B-4049-B3AD-CD624287B833}.exe
  C:\Windows\{8BC5D589-2A4B-4049-B3AD-CD624287B833}.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:716
- - C:\Windows\{B8348378-714B-45ca-9313-9F9287DFF07A}.exe
    C:\Windows\{B8348378-714B-45ca-9313-9F9287DFF07A}.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:1812
  - - C:\Windows\{F8FFDB3D-7A04-4963-A76C-9D9472F6E162}.exe
      C:\Windows\{F8FFDB3D-7A04-4963-A76C-9D9472F6E162}.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:2996
    - - C:\Windows\{A0D51077-4A9E-4dce-9A9C-E3B06563A8BE}.exe
        
        C:\Windows\{A0D51077-4A9E-4dce-9A9C-E3B06563A8BE}.exe
        5⤵
        Executes dropped EXE
        System Location Discovery: System Language Discovery
        
        PID:2212
    - - C:\Windows\SysWOW64\cmd.exe
        
        C:\Windows\system32\cmd.exe /c del C:\Windows\{F8FFD~1.EXE > nul
        5⤵
        Executes a command shell one-liner
        System Location Discovery: System Language Discovery
        
        PID:3936
  - - C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c del C:\Windows\{B8348~1.EXE > nul
      4⤵
      Executes a command shell one-liner
      System Location Discovery: System Language Discovery
      PID:4896
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c del C:\Windows\{8BC5D~1.EXE > nul
    3⤵
    - Executes a command shell one-liner
    - System Location Discovery: System Language Discovery
    PID:3236
- 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:3124

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

{8BC5D589-2A4B-4049-B3AD-CD624287B833}.exe

Path C:\Windows\{8BC5D589-2A4B-4049-B3AD-CD624287B833}.exe
Size 79KB
SHA256 feb2ecc0a1f71eab5da50f42dcb241f2fef2e1b510f9c0adeca289ad72d47fbb
MD5 76bd6377ee483b2f65876016446660ce
SHA1 d852e727df8976a200f2fbc768ad59edb0900f3c
SHA512 376cb41be8583ac47888275118e80c65ffda644965eb539b78c147357fac9ebdb6d6d082490acbee1528cf68706560d29219c6af78547c4ba0ac12efc29b1340
SSDEEP 768:4vw9816vhKQLros4/wQzXOQ69zbjlAAX5e9zz:wEGh0oslGizbR9Xwzz
TLSH
T125835CD38EAC4483FDE6697012B8D9A77C3E97C61604B99B6B91FD5408A33C1EB3411E
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

{A0D51077-4A9E-4dce-9A9C-E3B06563A8BE}.exe

Path C:\Windows\{A0D51077-4A9E-4dce-9A9C-E3B06563A8BE}.exe
Size 79KB
SHA256 6f512a7c1f13af4b3c67f049aedc8737af122815eaa47bc27524c10cd4a63483
MD5 4ae8d5d5a34e60beed7492e6ce5e7853
SHA1 7fe8ad42fb360d2c4159eefa321fce0617adb9cf
SHA512 b763450df08f04c7e6361bb4aab27205508510b15911961fa07f6fe8c2b7ff576bca2b45681f397c863538fda455becaeabf74ccc220dba6ca4361d20e1a9c35
SSDEEP 768:4vw9816vhKQLro64/wQzXOQ69zbjlAAX5e9zz:wEGh0o6lGizbR9Xwzz
TLSH
T19B835CD38EAC4483FDD6697012B8DAA77C3E97C61604799B6B91FD5408A33C1EB3411E
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

{B8348378-714B-45ca-9313-9F9287DFF07A}.exe

Path C:\Windows\{B8348378-714B-45ca-9313-9F9287DFF07A}.exe
Size 79KB
SHA256 a6d9d2b77e98617c4e2d4a81fd619a198077700bcd1dd69fd75f42254ba31b84
MD5 7f389eb1e2d9d5603c7ac319aa123465
SHA1 548fa3fb39b7bf25987df7599ee0335cdde63140
SHA512 acab12e8f47456d2cc6d4f66aa812bbf54f5f3eba3c9bb7d72ca91fb18663ee549b2705ba9ac2ebb1d5c8c85a9bb0a43054fa7c858a77ebae06eb26921a9d8a9
SSDEEP 768:4vw9816vhKQLrov4/wQzXOQ69zbjlAAX5e9zz:wEGh0ovlGizbR9Xwzz
TLSH
T1ED835CC38EAC4483FDE6697012B8D9A77C3E97C61604B99B6B91FD5408A33C1EB3411E
MD5 SHA1 SHA512 SSDEEP TLSH

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{F8FFDB3D-7A04-4963-A76C-9D9472F6E162}.exe

Path C:\Windows\{F8FFDB3D-7A04-4963-A76C-9D9472F6E162}.exe
Size 79KB
SHA256 5d8d355ade2c59fea0db3624b71f7fde37d2077dc663fcae32c4b11044d990db
MD5 5ed7984db8f1a098b6f41a8497fd9b5b
SHA1 c4dd9cc2a60adf2094f387f0c18f8924ccc17bad
SHA512 f921c292dc9e48082ba23440f4c61f276e111fea4352eb582d34f8ff0ddbc37c73d3ab3151a9ec10406acd87d26ec3f83125fd22958241ff713f9adf10989995
SSDEEP 768:4vw9816vhKQLro94/wQzXOQ69zbjlAAX5e9zz:wEGh0o9lGizbR9Xwzz
TLSH
T198835CC38EAC4483FDE6697012B8D9A77C3E97C61604B99B6B91FD5408A33C1EB3411E
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