stormser | b921cc1aa4828a865ed454d50d4baa1459834f8c0708a7b6b2ca2f04e1861f87

General

Target
2026-07-09_f92906bbf51b12fa166a861ef6b3c71b_elex_wannacry.exe
Size 59KB
Sample260709-thrn3sdy6v
SHA256 b921cc1aa4828a865ed454d50d4baa1459834f8c0708a7b6b2ca2f04e1861f87
MD5 f92906bbf51b12fa166a861ef6b3c71b
SHA1 8e7df0c89b49496758ec86bd90675847b916c304
SHA512 135a300d2dc8d723ac073b479936a62277789ae55990019508afe1b95b1322bf46a8988e8774c385d0d71add527d613e8e0e2bd4ab5ec820d07503406f477499
SSDEEP 192:vbOzawOs81elJHsc45CcRZOgtShcWaOT2QLrCqwv5Y04/CFxyNhoy5t:vbLwOs8AHsc4sMfwhKQLrovL4/CFsrd
TLSH
T10743F8834BEE9CF2F791117108798AB9927B99D4950EBEDFBF90CD150037292E53A10B
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 2 IoCs

resource	yara_rule
behavioral2/files/0x000e00000001c609-3.dat	family_stormser
behavioral2/files/0x000d00000001c60a-6.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\{52FBAE44-8976-44f3-88CF-E51FB3B8CA59}	2026-07-09_f92906bbf51b12fa166a861ef6b3c71b_elex_wannacry.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{52FBAE44-8976-44f3-88CF-E51FB3B8CA59}\stubpath = "C:\\Windows\\{52FBAE44-8976-44f3-88CF-E51FB3B8CA59}.exe"	2026-07-09_f92906bbf51b12fa166a861ef6b3c71b_elex_wannacry.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{A8D33785-3F0B-47a4-AB3B-F79A8120CCD5}	{52FBAE44-8976-44f3-88CF-E51FB3B8CA59}.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{A8D33785-3F0B-47a4-AB3B-F79A8120CCD5}\stubpath = "C:\\Windows\\{A8D33785-3F0B-47a4-AB3B-F79A8120CCD5}.exe"	{52FBAE44-8976-44f3-88CF-E51FB3B8CA59}.exe

Executes dropped EXE 3 IoCs

pid	Process
5684	{52FBAE44-8976-44f3-88CF-E51FB3B8CA59}.exe
5340	{A8D33785-3F0B-47a4-AB3B-F79A8120CCD5}.exe
1280	{A8D33785-3F0B-47a4-AB3B-F79A8120CCD5}.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\{52FBAE44-8976-44f3-88CF-E51FB3B8CA59}.exe	2026-07-09_f92906bbf51b12fa166a861ef6b3c71b_elex_wannacry.exe
File created	C:\Windows\{A8D33785-3F0B-47a4-AB3B-F79A8120CCD5}.exe	{52FBAE44-8976-44f3-88CF-E51FB3B8CA59}.exe

System Location Discovery: System Language Discovery 1 TTPs 6 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	{52FBAE44-8976-44f3-88CF-E51FB3B8CA59}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{A8D33785-3F0B-47a4-AB3B-F79A8120CCD5}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{A8D33785-3F0B-47a4-AB3B-F79A8120CCD5}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-07-09_f92906bbf51b12fa166a861ef6b3c71b_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-1-5-21-2049790993-2338060321-149346055-1000\{0C12DBA2-4E03-4944-8904-5FD86F21052C}	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 6 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	4488	2026-07-09_f92906bbf51b12fa166a861ef6b3c71b_elex_wannacry.exe
Token: SeIncBasePriorityPrivilege	5684	{52FBAE44-8976-44f3-88CF-E51FB3B8CA59}.exe
Token: SeShutdownPrivilege	1488	explorer.exe
Token: SeCreatePagefilePrivilege	1488	explorer.exe
Token: SeShutdownPrivilege	1488	explorer.exe
Token: SeCreatePagefilePrivilege	1488	explorer.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
4268	sihost.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4488 wrote to memory of 5684	4488	2026-07-09_f92906bbf51b12fa166a861ef6b3c71b_elex_wannacry.exe	88
PID 4488 wrote to memory of 1568	4488	2026-07-09_f92906bbf51b12fa166a861ef6b3c71b_elex_wannacry.exe	89
PID 5684 wrote to memory of 5340	5684	{52FBAE44-8976-44f3-88CF-E51FB3B8CA59}.exe	90
PID 5684 wrote to memory of 2684	5684	{52FBAE44-8976-44f3-88CF-E51FB3B8CA59}.exe	91
PID 4268 wrote to memory of 1488	4268	sihost.exe	97
PID 1488 wrote to memory of 1280	1488	explorer.exe	98

C:\Users\Admin\AppData\Local\Temp\2026-07-09_f92906bbf51b12fa166a861ef6b3c71b_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-07-09_f92906bbf51b12fa166a861ef6b3c71b_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:4488
- C:\Windows\{52FBAE44-8976-44f3-88CF-E51FB3B8CA59}.exe
  C:\Windows\{52FBAE44-8976-44f3-88CF-E51FB3B8CA59}.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:5684
- - C:\Windows\{A8D33785-3F0B-47a4-AB3B-F79A8120CCD5}.exe
    C:\Windows\{A8D33785-3F0B-47a4-AB3B-F79A8120CCD5}.exe
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:5340
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c del C:\Windows\{52FBA~1.EXE > nul
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2684
- 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:1568

C:\Windows\system32\sihost.exe
sihost.exe
1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:4268
- C:\Windows\explorer.exe
  explorer.exe /LOADSAVEDWINDOWS
  2⤵
  - Modifies registry class
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1488
- - C:\Windows\{A8D33785-3F0B-47a4-AB3B-F79A8120CCD5}.exe
    "C:\Windows\{A8D33785-3F0B-47a4-AB3B-F79A8120CCD5}.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:1280

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

{52FBAE44-8976-44f3-88CF-E51FB3B8CA59}.exe

Path C:\Windows\{52FBAE44-8976-44f3-88CF-E51FB3B8CA59}.exe
Size 59KB
SHA256 4fd03ef6867b230606279ed3696090ac7428d6aaa2d9cb9f9691e65a5b4a818e
MD5 0508fc8ae68f1f4fe8caac088a3a8f06
SHA1 3d21480ca5b5a6cdca638003ec57e3e674947961
SHA512 79a84f1f846a9a2dbb34083256ddfff8fc683cb51c04084736906bf22b32a69132ad427643afc24382b2173dfb8bc17826aaee6cf6367b4c2a7e1657acaf8015
SSDEEP 384:vbLwOs8AHsc4sMfwhKQLroPtL4/CFsrd:vvw9816vhKQLroPtL4/wQ
TLSH
T1054308834BEE9CF2F791117108798AB9927B99D4910EBEDFBF90CD150037292E43A10B
MD5 SHA1 SHA512 SSDEEP TLSH

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{A8D33785-3F0B-47a4-AB3B-F79A8120CCD5}.exe

Path C:\Windows\{A8D33785-3F0B-47a4-AB3B-F79A8120CCD5}.exe
Size 59KB
SHA256 d248c0986cb36ec86bb5fab3be0029d6145bbe9bbaa1ce009af824923e1bb1f2
MD5 98cfee98402df882e6db403797c01dff
SHA1 810fc6f3ffe610d3a44ad36501dbafdeb54f39ba
SHA512 cf2287a22e14d68b0a6d75c62afbfb30dec4b2a780441d60c337d7f0a97f0aeb250d7d01150493c47cbd1b49d4dabd1f60272d089d86173adf7f347e14c9da33
SSDEEP 192:vbOzawOs81elJHsc45CcRZOgtShcWaOT2QLrCqwxY04/CFxyNhoy5t:vbLwOs8AHsc4sMfwhKQLroD4/CFsrd
TLSH
T10C4308834BEE9CF2F7911171087D8AB9927B99D4950EBEDFBB90CD150037292E53A10B
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