stormser | 24d881a4ecc11d50420cac34f9f6ab8a333139aa670edb3cd36c645b60770de4

General

Target
2026-06-25_27cbf6d5ee7e7c09b198de414c252ddd_elex_wannacry.exe
Size 59KB
Sample260629-3hl82aax9r
SHA256 24d881a4ecc11d50420cac34f9f6ab8a333139aa670edb3cd36c645b60770de4
MD5 27cbf6d5ee7e7c09b198de414c252ddd
SHA1 53b5097ee2ae46a0fd38b2e6663f025e2b646453
SHA512 4190df4640a4a7717c69477672ec370649dbd77c1bd3f23fd554d92e0ec31010232d842c87579c22d5698dd5c996e2957ec596b924124e9be959129928e02d3a
SSDEEP 192:kbOzawOs81elJHsc45CcRZOgtShcWaOT2QLrCqw+Y04/CFxyNhoy5t:kbLwOs8AHsc4sMfwhKQLroE4/CFsrd
TLSH
T10F4308834BDE9CF2F791127118794AB9927B9AC4910EBE9FBF90CD540037292E53E10B
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/0x000e00000001c533-3.dat	family_stormser
behavioral2/files/0x000e00000001c534-6.dat	family_stormser
behavioral2/files/0x000f00000001c533-13.dat	family_stormser
behavioral2/files/0x000f00000001c534-18.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
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{2800C273-216D-48bf-8135-6E8DFA81FDBC}	{25117AD1-F92D-4c72-BE32-30136C99FE56}.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{2800C273-216D-48bf-8135-6E8DFA81FDBC}\stubpath = "C:\\Windows\\{2800C273-216D-48bf-8135-6E8DFA81FDBC}.exe"	{25117AD1-F92D-4c72-BE32-30136C99FE56}.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{9967A1DD-7C0F-4d5d-98CE-5C51FB8E5FEB}	{2800C273-216D-48bf-8135-6E8DFA81FDBC}.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{9967A1DD-7C0F-4d5d-98CE-5C51FB8E5FEB}\stubpath = "C:\\Windows\\{9967A1DD-7C0F-4d5d-98CE-5C51FB8E5FEB}.exe"	{2800C273-216D-48bf-8135-6E8DFA81FDBC}.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{1EFC9DA1-1681-4249-B73A-95468133C5BD}	2026-06-25_27cbf6d5ee7e7c09b198de414c252ddd_elex_wannacry.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{1EFC9DA1-1681-4249-B73A-95468133C5BD}\stubpath = "C:\\Windows\\{1EFC9DA1-1681-4249-B73A-95468133C5BD}.exe"	2026-06-25_27cbf6d5ee7e7c09b198de414c252ddd_elex_wannacry.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{25117AD1-F92D-4c72-BE32-30136C99FE56}	{1EFC9DA1-1681-4249-B73A-95468133C5BD}.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{25117AD1-F92D-4c72-BE32-30136C99FE56}\stubpath = "C:\\Windows\\{25117AD1-F92D-4c72-BE32-30136C99FE56}.exe"	{1EFC9DA1-1681-4249-B73A-95468133C5BD}.exe

Executes dropped EXE 5 IoCs

pid	Process
1156	{1EFC9DA1-1681-4249-B73A-95468133C5BD}.exe
5824	{25117AD1-F92D-4c72-BE32-30136C99FE56}.exe
4372	{2800C273-216D-48bf-8135-6E8DFA81FDBC}.exe
2580	{9967A1DD-7C0F-4d5d-98CE-5C51FB8E5FEB}.exe
2420	{9967A1DD-7C0F-4d5d-98CE-5C51FB8E5FEB}.exe

Drops file in Windows directory 4 IoCs

description	ioc	Process
File created	C:\Windows\{1EFC9DA1-1681-4249-B73A-95468133C5BD}.exe	2026-06-25_27cbf6d5ee7e7c09b198de414c252ddd_elex_wannacry.exe
File created	C:\Windows\{25117AD1-F92D-4c72-BE32-30136C99FE56}.exe	{1EFC9DA1-1681-4249-B73A-95468133C5BD}.exe
File created	C:\Windows\{2800C273-216D-48bf-8135-6E8DFA81FDBC}.exe	{25117AD1-F92D-4c72-BE32-30136C99FE56}.exe
File created	C:\Windows\{9967A1DD-7C0F-4d5d-98CE-5C51FB8E5FEB}.exe	{2800C273-216D-48bf-8135-6E8DFA81FDBC}.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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{9967A1DD-7C0F-4d5d-98CE-5C51FB8E5FEB}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-06-25_27cbf6d5ee7e7c09b198de414c252ddd_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	{25117AD1-F92D-4c72-BE32-30136C99FE56}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{9967A1DD-7C0F-4d5d-98CE-5C51FB8E5FEB}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{1EFC9DA1-1681-4249-B73A-95468133C5BD}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{2800C273-216D-48bf-8135-6E8DFA81FDBC}.exe

Modifies registry class 3 IoCs

description	ioc	Process
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
Key created	\REGISTRY\MACHINE\Software\Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppModel\Deployment\Package\*\S-1-5-21-2639994890-966400312-4246138405-1000\{7DA6B089-9B42-4856-B0DB-27F3E2EC6D41}	explorer.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	5968	2026-06-25_27cbf6d5ee7e7c09b198de414c252ddd_elex_wannacry.exe
Token: SeIncBasePriorityPrivilege	1156	{1EFC9DA1-1681-4249-B73A-95468133C5BD}.exe
Token: SeIncBasePriorityPrivilege	5824	{25117AD1-F92D-4c72-BE32-30136C99FE56}.exe
Token: SeIncBasePriorityPrivilege	4372	{2800C273-216D-48bf-8135-6E8DFA81FDBC}.exe
Token: SeShutdownPrivilege	2724	explorer.exe
Token: SeCreatePagefilePrivilege	2724	explorer.exe
Token: SeShutdownPrivilege	2724	explorer.exe
Token: SeCreatePagefilePrivilege	2724	explorer.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
4440	sihost.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 5968 wrote to memory of 1156	5968	2026-06-25_27cbf6d5ee7e7c09b198de414c252ddd_elex_wannacry.exe	88
PID 5968 wrote to memory of 1400	5968	2026-06-25_27cbf6d5ee7e7c09b198de414c252ddd_elex_wannacry.exe	89
PID 1156 wrote to memory of 5824	1156	{1EFC9DA1-1681-4249-B73A-95468133C5BD}.exe	90
PID 1156 wrote to memory of 5588	1156	{1EFC9DA1-1681-4249-B73A-95468133C5BD}.exe	91
PID 5824 wrote to memory of 4372	5824	{25117AD1-F92D-4c72-BE32-30136C99FE56}.exe	92
PID 5824 wrote to memory of 4360	5824	{25117AD1-F92D-4c72-BE32-30136C99FE56}.exe	93
PID 4372 wrote to memory of 2580	4372	{2800C273-216D-48bf-8135-6E8DFA81FDBC}.exe	94
PID 4372 wrote to memory of 4588	4372	{2800C273-216D-48bf-8135-6E8DFA81FDBC}.exe	95
PID 4440 wrote to memory of 2724	4440	sihost.exe	100
PID 2724 wrote to memory of 2420	2724	explorer.exe	101

C:\Users\Admin\AppData\Local\Temp\2026-06-25_27cbf6d5ee7e7c09b198de414c252ddd_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-06-25_27cbf6d5ee7e7c09b198de414c252ddd_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:5968
- C:\Windows\{1EFC9DA1-1681-4249-B73A-95468133C5BD}.exe
  C:\Windows\{1EFC9DA1-1681-4249-B73A-95468133C5BD}.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:1156
- - C:\Windows\{25117AD1-F92D-4c72-BE32-30136C99FE56}.exe
    C:\Windows\{25117AD1-F92D-4c72-BE32-30136C99FE56}.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:5824
  - - C:\Windows\{2800C273-216D-48bf-8135-6E8DFA81FDBC}.exe
      C:\Windows\{2800C273-216D-48bf-8135-6E8DFA81FDBC}.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:4372
    - - C:\Windows\{9967A1DD-7C0F-4d5d-98CE-5C51FB8E5FEB}.exe
        
        C:\Windows\{9967A1DD-7C0F-4d5d-98CE-5C51FB8E5FEB}.exe
        5⤵
        Executes dropped EXE
        System Location Discovery: System Language Discovery
        
        PID:2580
    - - C:\Windows\SysWOW64\cmd.exe
        
        C:\Windows\system32\cmd.exe /c del C:\Windows\{2800C~1.EXE > nul
        5⤵
        System Location Discovery: System Language Discovery
        
        PID:4588
  - - C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c del C:\Windows\{25117~1.EXE > nul
      4⤵
      System Location Discovery: System Language Discovery
      PID:4360
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c del C:\Windows\{1EFC9~1.EXE > nul
    3⤵
    - System Location Discovery: System Language Discovery
    PID:5588
- 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:1400

C:\Windows\system32\sihost.exe
sihost.exe
1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:4440
- C:\Windows\explorer.exe
  explorer.exe /LOADSAVEDWINDOWS
  2⤵
  - Modifies registry class
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2724
- - C:\Windows\{9967A1DD-7C0F-4d5d-98CE-5C51FB8E5FEB}.exe
    "C:\Windows\{9967A1DD-7C0F-4d5d-98CE-5C51FB8E5FEB}.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:2420

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

{1EFC9DA1-1681-4249-B73A-95468133C5BD}.exe

Path C:\Windows\{1EFC9DA1-1681-4249-B73A-95468133C5BD}.exe
Size 59KB
SHA256 6bf59dec2097cb38ea5c14ed95f4b4f1b9c0f822cd3f48dafa86c6e2d60e7034
MD5 e9b12aa86a6f366cf85eb5d8bb4cd744
SHA1 4c50c9ba0cb12f57019910b8cdf97d3d01c9416b
SHA512 4ef0e69b1db32c636c8ac970544d347b72f497a0f094178c92d2edc4d6951fae4f7ae0b980d82f219d0b07bbec1bec95309b3e520a37959230d59718aef3f7ed
SSDEEP 192:kbOzawOs81elJHsc45CcRZOgtShcWaOT2QLrCqwbY04/CFxyNhoy5t:kbLwOs8AHsc4sMfwhKQLrod4/CFsrd
TLSH
T1E44309834BDE9CF2F791123108794AB9927B9AC4910EBE9FBF90CD550037292E53E10B
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

{25117AD1-F92D-4c72-BE32-30136C99FE56}.exe

Path C:\Windows\{25117AD1-F92D-4c72-BE32-30136C99FE56}.exe
Size 59KB
SHA256 ee16121d71a752d5bd8f234bd65cae36a90fcbacc078083bf1a0598ea55070ba
MD5 1dd0efc1822e6a71d509551a183503e3
SHA1 a7bca225a8a3046d6bbf3ac1ca8ebcbf5c968ebd
SHA512 02ab96ebbbdf32d4e77a69ac0b0da2d354acdfe4c20a793e3256e0d618a3acf41664ac6b4b06588c42b7673ce8ec7414a9017b3b88ed71dd6eb9d7d46e682597
SSDEEP 192:kbOzawOs81elJHsc45CcRZOgtShcWaOT2QLrCqwEyY04/CFxyNhoy5t:kbLwOs8AHsc4sMfwhKQLroh4/CFsrd
TLSH
T1D94308834BDE9CF2F791127108794AB9927B9AC4910EBE9FBF90CD550037292E53E14B
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

{2800C273-216D-48bf-8135-6E8DFA81FDBC}.exe

Path C:\Windows\{2800C273-216D-48bf-8135-6E8DFA81FDBC}.exe
Size 59KB
SHA256 fe1047ce6105d7469e3b15626211ce9652853397d8cf0579cdac341f0bf4ad99
MD5 c83a19cc233324158ed60c34aeac9e17
SHA1 5c19f7bf8b74faaa0fc57c8e26e88fb458e6ec04
SHA512 23db3c6f36011cd506bae3f07f52dd21804d3b8d6e22e4aafb002c3e9a94b197919f387d53a591b8ab13c93151b11fa38f6c50984d72bbd38d15eddd75d73abf
SSDEEP 192:kbOzawOs81elJHsc45CcRZOgtShcWaOT2QLrCqwEo/Y04/CFxyNhoy5t:kbLwOs8AHsc4sMfwhKQLro5x4/CFsrd
TLSH
T11D4308834BDE9CF2F791123108794AB9927B9AC4910EBE9FBF90CD540037292E53E14B
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

{9967A1DD-7C0F-4d5d-98CE-5C51FB8E5FEB}.exe

Path C:\Windows\{9967A1DD-7C0F-4d5d-98CE-5C51FB8E5FEB}.exe
Size 59KB
SHA256 ea5782b79d49c141e475b0c3fce939ce65ed0aebd1663da956905372b176b08f
MD5 1a1b2dd3305e4ab287961bbf8565c2b6
SHA1 82dd1256fe0b1532d0218c78d083d2626a923929
SHA512 b9d38115f56e832d5f8667aaf06b6efaa24d6063e9ceaf75765cdf253c9e8d26449e4a6c8abf9ee1b010e9eb502518fec52dd247ec264fcee844e69327bab8c2
SSDEEP 192:kbOzawOs81elJHsc45CcRZOgtShcWaOT2QLrCqwAY04/CFxyNhoy5t:kbLwOs8AHsc4sMfwhKQLroO4/CFsrd
TLSH
T1404309834BDE9CF2F791127108794AB9927B9AC4910EBE9FBF90CD550037292E53E14B
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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