stormser | 5e3a0743932e6b8af1e5feeadf429548f63589c56fda4b7bb9d784b1e8c1e6d7

General

Target
2026-07-08_4daac3929b5ca51bb93371765d8a4c79_elex_wannacry.exe
Size 372KB
Sample260708-wlevsse191
SHA256 5e3a0743932e6b8af1e5feeadf429548f63589c56fda4b7bb9d784b1e8c1e6d7
MD5 4daac3929b5ca51bb93371765d8a4c79
SHA1 7ce681e8a2721d4d053107d6ae8d3e96c647e690
SHA512 f2f570ca8705409d32099006944fcfd89781d896e1b5b50a8e866128bacc8e59a44146df9d958d7b439a8be52b33664baf8cd26c4f5cf13c6f2f269f0c015a25
SSDEEP 384:K7bLwOs8AHsc4sMfwhKQLrohx4/CFsrdb:Gvw9816vhKQLrohx4/wQR
TLSH
T1BD8419835BDE9CF2FB91113009798AB9927B99C4910EBEDFBF90CD150037292D53A10B
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 4 IoCs

resource	yara_rule
behavioral2/files/0x000e00000001c4de-3.dat	family_stormser
behavioral2/files/0x000e00000001c4df-6.dat	family_stormser
behavioral2/files/0x000e00000001c4e1-13.dat	family_stormser
behavioral2/files/0x000f00000001c4df-18.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\{8FDDB462-3433-4401-BD87-F92542E90FD0}\stubpath = "C:\\Windows\\{8FDDB462-3433-4401-BD87-F92542E90FD0}.exe"	{27B6DED0-29AC-484e-A611-5AE8C32D1D42}.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{44A17341-9176-43f0-91C9-FEC857BEE29C}	{8FDDB462-3433-4401-BD87-F92542E90FD0}.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{44A17341-9176-43f0-91C9-FEC857BEE29C}\stubpath = "C:\\Windows\\{44A17341-9176-43f0-91C9-FEC857BEE29C}.exe"	{8FDDB462-3433-4401-BD87-F92542E90FD0}.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{FEA44146-0EC3-4535-A69C-5CE7483D7B4F}	2026-07-08_4daac3929b5ca51bb93371765d8a4c79_elex_wannacry.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{FEA44146-0EC3-4535-A69C-5CE7483D7B4F}\stubpath = "C:\\Windows\\{FEA44146-0EC3-4535-A69C-5CE7483D7B4F}.exe"	2026-07-08_4daac3929b5ca51bb93371765d8a4c79_elex_wannacry.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{27B6DED0-29AC-484e-A611-5AE8C32D1D42}	{FEA44146-0EC3-4535-A69C-5CE7483D7B4F}.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{27B6DED0-29AC-484e-A611-5AE8C32D1D42}\stubpath = "C:\\Windows\\{27B6DED0-29AC-484e-A611-5AE8C32D1D42}.exe"	{FEA44146-0EC3-4535-A69C-5CE7483D7B4F}.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{8FDDB462-3433-4401-BD87-F92542E90FD0}	{27B6DED0-29AC-484e-A611-5AE8C32D1D42}.exe

Executes dropped EXE 5 IoCs

pid	Process
3876	{FEA44146-0EC3-4535-A69C-5CE7483D7B4F}.exe
1956	{27B6DED0-29AC-484e-A611-5AE8C32D1D42}.exe
4952	{8FDDB462-3433-4401-BD87-F92542E90FD0}.exe
4312	{44A17341-9176-43f0-91C9-FEC857BEE29C}.exe
3260	{44A17341-9176-43f0-91C9-FEC857BEE29C}.exe

Drops file in Windows directory 4 IoCs

description	ioc	Process
File created	C:\Windows\{27B6DED0-29AC-484e-A611-5AE8C32D1D42}.exe	{FEA44146-0EC3-4535-A69C-5CE7483D7B4F}.exe
File created	C:\Windows\{8FDDB462-3433-4401-BD87-F92542E90FD0}.exe	{27B6DED0-29AC-484e-A611-5AE8C32D1D42}.exe
File created	C:\Windows\{44A17341-9176-43f0-91C9-FEC857BEE29C}.exe	{8FDDB462-3433-4401-BD87-F92542E90FD0}.exe
File created	C:\Windows\{FEA44146-0EC3-4535-A69C-5CE7483D7B4F}.exe	2026-07-08_4daac3929b5ca51bb93371765d8a4c79_elex_wannacry.exe

System Location Discovery: System Language Discovery 1 TTPs 10 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	2026-07-08_4daac3929b5ca51bb93371765d8a4c79_elex_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{FEA44146-0EC3-4535-A69C-5CE7483D7B4F}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{8FDDB462-3433-4401-BD87-F92542E90FD0}.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	{44A17341-9176-43f0-91C9-FEC857BEE29C}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{27B6DED0-29AC-484e-A611-5AE8C32D1D42}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{44A17341-9176-43f0-91C9-FEC857BEE29C}.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-1-5-21-3575702013-381963388-2545377694-1000\{EB1DB29E-2365-4FE3-BACE-EE7E8D60DEE4}	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 8 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	4700	2026-07-08_4daac3929b5ca51bb93371765d8a4c79_elex_wannacry.exe
Token: SeIncBasePriorityPrivilege	3876	{FEA44146-0EC3-4535-A69C-5CE7483D7B4F}.exe
Token: SeIncBasePriorityPrivilege	1956	{27B6DED0-29AC-484e-A611-5AE8C32D1D42}.exe
Token: SeIncBasePriorityPrivilege	4952	{8FDDB462-3433-4401-BD87-F92542E90FD0}.exe
Token: SeShutdownPrivilege	2316	explorer.exe
Token: SeCreatePagefilePrivilege	2316	explorer.exe
Token: SeShutdownPrivilege	2316	explorer.exe
Token: SeCreatePagefilePrivilege	2316	explorer.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
6132	sihost.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 4700 wrote to memory of 3876	4700	2026-07-08_4daac3929b5ca51bb93371765d8a4c79_elex_wannacry.exe	88
PID 4700 wrote to memory of 4816	4700	2026-07-08_4daac3929b5ca51bb93371765d8a4c79_elex_wannacry.exe	89
PID 3876 wrote to memory of 1956	3876	{FEA44146-0EC3-4535-A69C-5CE7483D7B4F}.exe	90
PID 3876 wrote to memory of 4180	3876	{FEA44146-0EC3-4535-A69C-5CE7483D7B4F}.exe	91
PID 1956 wrote to memory of 4952	1956	{27B6DED0-29AC-484e-A611-5AE8C32D1D42}.exe	93
PID 1956 wrote to memory of 1984	1956	{27B6DED0-29AC-484e-A611-5AE8C32D1D42}.exe	94
PID 4952 wrote to memory of 4312	4952	{8FDDB462-3433-4401-BD87-F92542E90FD0}.exe	95
PID 4952 wrote to memory of 5636	4952	{8FDDB462-3433-4401-BD87-F92542E90FD0}.exe	96
PID 6132 wrote to memory of 2316	6132	sihost.exe	101
PID 2316 wrote to memory of 3260	2316	explorer.exe	102

C:\Users\Admin\AppData\Local\Temp\2026-07-08_4daac3929b5ca51bb93371765d8a4c79_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-07-08_4daac3929b5ca51bb93371765d8a4c79_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:4700
- C:\Windows\{FEA44146-0EC3-4535-A69C-5CE7483D7B4F}.exe
  C:\Windows\{FEA44146-0EC3-4535-A69C-5CE7483D7B4F}.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:3876
- - C:\Windows\{27B6DED0-29AC-484e-A611-5AE8C32D1D42}.exe
    C:\Windows\{27B6DED0-29AC-484e-A611-5AE8C32D1D42}.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:1956
  - - C:\Windows\{8FDDB462-3433-4401-BD87-F92542E90FD0}.exe
      C:\Windows\{8FDDB462-3433-4401-BD87-F92542E90FD0}.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:4952
    - - C:\Windows\{44A17341-9176-43f0-91C9-FEC857BEE29C}.exe
        
        C:\Windows\{44A17341-9176-43f0-91C9-FEC857BEE29C}.exe
        5⤵
        Executes dropped EXE
        System Location Discovery: System Language Discovery
        
        PID:4312
    - - C:\Windows\SysWOW64\cmd.exe
        
        C:\Windows\system32\cmd.exe /c del C:\Windows\{8FDDB~1.EXE > nul
        5⤵
        System Location Discovery: System Language Discovery
        
        PID:5636
  - - C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c del C:\Windows\{27B6D~1.EXE > nul
      4⤵
      System Location Discovery: System Language Discovery
      PID:1984
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c del C:\Windows\{FEA44~1.EXE > nul
    3⤵
    - System Location Discovery: System Language Discovery
    PID:4180
- 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:4816

C:\Windows\system32\sihost.exe
sihost.exe
1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:6132
- C:\Windows\explorer.exe
  explorer.exe /LOADSAVEDWINDOWS
  2⤵
  - Modifies registry class
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2316
- - C:\Windows\{44A17341-9176-43f0-91C9-FEC857BEE29C}.exe
    "C:\Windows\{44A17341-9176-43f0-91C9-FEC857BEE29C}.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:3260

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

{27B6DED0-29AC-484e-A611-5AE8C32D1D42}.exe

Path C:\Windows\{27B6DED0-29AC-484e-A611-5AE8C32D1D42}.exe
Size 372KB
SHA256 f1ab6852e3e43639a5eb24b494fc5058a8c382a0ea2149d0a40e63453cf85f31
MD5 30600b881c450750b603a7e04780e76c
SHA1 b7e7451a53321549453871ea102bbbd80b5050ff
SHA512 333dd9cfabc9cabbd9653016ef897f2e4e9895254cf36f753d6fab27a40f4f7fae7841d6c9e96ab4d885a57513cdb0a179dcea01f6707536d211117dda429885
SSDEEP 384:K7bLwOs8AHsc4sMfwhKQLroax4/CFsrdb:Gvw9816vhKQLroax4/wQR
TLSH
T136841A834BDE9CF2FB91113109798AB5927B99C4910EBEDFBF90CD150037292D43A10B
MD5 SHA1 SHA512 SSDEEP TLSH

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{44A17341-9176-43f0-91C9-FEC857BEE29C}.exe

Path C:\Windows\{44A17341-9176-43f0-91C9-FEC857BEE29C}.exe
Size 372KB
SHA256 de9f25183ed55e18d310bc0a73f088bdc3e19f5bdc5b19d3139f38f81ecc4129
MD5 ef5bf7bca4dee8e646b2d717fc0c2483
SHA1 ab89b9cd2952072fc63b40194d744c3cbe18a077
SHA512 d4e7baf51f610b7a7819c624fe6e328b6cf9a67a8940da22b662a6e6ce44df70bd5313f278a3bec6a6bf10b9e17c7f43da99842b06bd57477d889fc84ac58155
SSDEEP 384:K7bLwOs8AHsc4sMfwhKQLro6x4/CFsrdb:Gvw9816vhKQLro6x4/wQR
TLSH
T1E68408835BDE9CF2FB91113009798AB9927B9AC4914EBEDFBF90CD550037292D53A10B
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

{8FDDB462-3433-4401-BD87-F92542E90FD0}.exe

Path C:\Windows\{8FDDB462-3433-4401-BD87-F92542E90FD0}.exe
Size 372KB
SHA256 b21f44e98f40ffe53e626d5fdee1cc7ba95ad3b720f23793548a065f88f08f69
MD5 d31c24e5f1a8034e52a10e3fff5a6c1a
SHA1 ea903092b9d494d291d0cf1a5119510b94208d13
SHA512 923586e0b2cb8eff54718b5b8f7bc1d80df2a54f1da850634971f52aea995f105c4e3e889ed4a2e3d2435a02b285a657bb2e6568c79c566884727ca1592e42e6
SSDEEP 384:K7bLwOs8AHsc4sMfwhKQLroKx4/CFsrdb:Gvw9816vhKQLroKx4/wQR
TLSH
T1068409835BDE9CF2FB91113109798AB9927B9AC4950EBEDFBF90CD150037252D93A10B
MD5 SHA1 SHA512 SSDEEP TLSH

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{FEA44146-0EC3-4535-A69C-5CE7483D7B4F}.exe

Path C:\Windows\{FEA44146-0EC3-4535-A69C-5CE7483D7B4F}.exe
Size 372KB
SHA256 e37f719ffa7e1600155597751aee8d9fc29ede3e34c495a9ed4a3505ab953640
MD5 7f64bed66a08deb6d503b4c24bf96caf
SHA1 4b828ccdde7a1660d626b9bb7ab98dd4b0db6c0d
SHA512 39c2369ace7a70dee180280f9d7628e0e4417b957ad0cf9bf3c5ad23676aa76cd6112a83610093ea01b266d2c7c88622db896db42219621a6e1b98e25b1c5651
SSDEEP 384:K7bLwOs8AHsc4sMfwhKQLroxx4/CFsrdb:Gvw9816vhKQLroxx4/wQR
TLSH
T11F8419835BDE9CF2FB91113009798AB5927B99C4914EBEDFBF90CD550037291D53A10B
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