stormser | 44eb0a14632dba18af1fd3497ebc35f948750d9103e4da0a00169963aad15920

General

Target
2026-06-27_df0c58e219269d6bd8c41a9feeb1e53a_elex_wannacry.exe
Size 60KB
Sample260629-ckdfssb16l
SHA256 44eb0a14632dba18af1fd3497ebc35f948750d9103e4da0a00169963aad15920
MD5 df0c58e219269d6bd8c41a9feeb1e53a
SHA1 a5add46d0242446310a044f5816cd02c340a1f86
SHA512 05116733be9616fa04eaca9dbee108d57afef1f9dc759ba7fc2df6ab1c363bf694be51bc86cf7dcb8150fcde2d0ada7dc8fe747a34755519fbd453f914139a6d
SSDEEP 384:vbLwOs8AHsc4sMfwhKQLroK4/CFsrdHWMZo:vvw9816vhKQLroK4/wQpWMZo
TLSH
T163533A830F9978F2FB810175043A8BB992AB59D4D14FFE9BBF90CC194436651E83E60A
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/0x000e00000001c510-3.dat	family_stormser
behavioral2/files/0x000e00000001c511-6.dat	family_stormser
behavioral2/files/0x000d00000001c515-13.dat	family_stormser
behavioral2/files/0x000f00000001c511-18.dat	family_stormser

Detects Windows executables referencing non-Windows User-Agents 4 IoCs

resource	yara_rule
behavioral2/files/0x000e00000001c510-3.dat	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
behavioral2/files/0x000e00000001c511-6.dat	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
behavioral2/files/0x000d00000001c515-13.dat	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
behavioral2/files/0x000f00000001c511-18.dat	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA

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\{47EBC39E-B7D5-46f1-8D17-A936026816DD}	{315B505C-9E39-4cec-8AFB-FE9D0F6703B3}.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{47EBC39E-B7D5-46f1-8D17-A936026816DD}\stubpath = "C:\\Windows\\{47EBC39E-B7D5-46f1-8D17-A936026816DD}.exe"	{315B505C-9E39-4cec-8AFB-FE9D0F6703B3}.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{5E289675-367F-40e2-B77A-54D49EAC9E24}	{47EBC39E-B7D5-46f1-8D17-A936026816DD}.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{5E289675-367F-40e2-B77A-54D49EAC9E24}\stubpath = "C:\\Windows\\{5E289675-367F-40e2-B77A-54D49EAC9E24}.exe"	{47EBC39E-B7D5-46f1-8D17-A936026816DD}.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{145D5E84-EED2-44b2-9FB6-345343EA11F2}	2026-06-27_df0c58e219269d6bd8c41a9feeb1e53a_elex_wannacry.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{145D5E84-EED2-44b2-9FB6-345343EA11F2}\stubpath = "C:\\Windows\\{145D5E84-EED2-44b2-9FB6-345343EA11F2}.exe"	2026-06-27_df0c58e219269d6bd8c41a9feeb1e53a_elex_wannacry.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{315B505C-9E39-4cec-8AFB-FE9D0F6703B3}	{145D5E84-EED2-44b2-9FB6-345343EA11F2}.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{315B505C-9E39-4cec-8AFB-FE9D0F6703B3}\stubpath = "C:\\Windows\\{315B505C-9E39-4cec-8AFB-FE9D0F6703B3}.exe"	{145D5E84-EED2-44b2-9FB6-345343EA11F2}.exe

Executes dropped EXE 5 IoCs

pid	Process
2620	{145D5E84-EED2-44b2-9FB6-345343EA11F2}.exe
1388	{315B505C-9E39-4cec-8AFB-FE9D0F6703B3}.exe
3560	{47EBC39E-B7D5-46f1-8D17-A936026816DD}.exe
5368	{5E289675-367F-40e2-B77A-54D49EAC9E24}.exe
4108	{5E289675-367F-40e2-B77A-54D49EAC9E24}.exe

Drops file in Windows directory 4 IoCs

description	ioc	Process
File created	C:\Windows\{145D5E84-EED2-44b2-9FB6-345343EA11F2}.exe	2026-06-27_df0c58e219269d6bd8c41a9feeb1e53a_elex_wannacry.exe
File created	C:\Windows\{315B505C-9E39-4cec-8AFB-FE9D0F6703B3}.exe	{145D5E84-EED2-44b2-9FB6-345343EA11F2}.exe
File created	C:\Windows\{47EBC39E-B7D5-46f1-8D17-A936026816DD}.exe	{315B505C-9E39-4cec-8AFB-FE9D0F6703B3}.exe
File created	C:\Windows\{5E289675-367F-40e2-B77A-54D49EAC9E24}.exe	{47EBC39E-B7D5-46f1-8D17-A936026816DD}.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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{5E289675-367F-40e2-B77A-54D49EAC9E24}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{315B505C-9E39-4cec-8AFB-FE9D0F6703B3}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{47EBC39E-B7D5-46f1-8D17-A936026816DD}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{5E289675-367F-40e2-B77A-54D49EAC9E24}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-06-27_df0c58e219269d6bd8c41a9feeb1e53a_elex_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{145D5E84-EED2-44b2-9FB6-345343EA11F2}.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-1-5-21-28459746-3881314244-166055492-1000\{03EC4D04-7215-4994-9294-51298A71F20B}	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	5160	2026-06-27_df0c58e219269d6bd8c41a9feeb1e53a_elex_wannacry.exe
Token: SeIncBasePriorityPrivilege	2620	{145D5E84-EED2-44b2-9FB6-345343EA11F2}.exe
Token: SeIncBasePriorityPrivilege	1388	{315B505C-9E39-4cec-8AFB-FE9D0F6703B3}.exe
Token: SeIncBasePriorityPrivilege	3560	{47EBC39E-B7D5-46f1-8D17-A936026816DD}.exe
Token: SeShutdownPrivilege	1080	explorer.exe
Token: SeCreatePagefilePrivilege	1080	explorer.exe
Token: SeShutdownPrivilege	1080	explorer.exe
Token: SeCreatePagefilePrivilege	1080	explorer.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2540	sihost.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 5160 wrote to memory of 2620	5160	2026-06-27_df0c58e219269d6bd8c41a9feeb1e53a_elex_wannacry.exe	89
PID 5160 wrote to memory of 2524	5160	2026-06-27_df0c58e219269d6bd8c41a9feeb1e53a_elex_wannacry.exe	90
PID 2620 wrote to memory of 1388	2620	{145D5E84-EED2-44b2-9FB6-345343EA11F2}.exe	91
PID 2620 wrote to memory of 5300	2620	{145D5E84-EED2-44b2-9FB6-345343EA11F2}.exe	92
PID 1388 wrote to memory of 3560	1388	{315B505C-9E39-4cec-8AFB-FE9D0F6703B3}.exe	94
PID 1388 wrote to memory of 5908	1388	{315B505C-9E39-4cec-8AFB-FE9D0F6703B3}.exe	95
PID 3560 wrote to memory of 5368	3560	{47EBC39E-B7D5-46f1-8D17-A936026816DD}.exe	96
PID 3560 wrote to memory of 600	3560	{47EBC39E-B7D5-46f1-8D17-A936026816DD}.exe	97
PID 2540 wrote to memory of 1080	2540	sihost.exe	102
PID 1080 wrote to memory of 4108	1080	explorer.exe	103

C:\Users\Admin\AppData\Local\Temp\2026-06-27_df0c58e219269d6bd8c41a9feeb1e53a_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-06-27_df0c58e219269d6bd8c41a9feeb1e53a_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:5160
- C:\Windows\{145D5E84-EED2-44b2-9FB6-345343EA11F2}.exe
  C:\Windows\{145D5E84-EED2-44b2-9FB6-345343EA11F2}.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:2620
- - C:\Windows\{315B505C-9E39-4cec-8AFB-FE9D0F6703B3}.exe
    C:\Windows\{315B505C-9E39-4cec-8AFB-FE9D0F6703B3}.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:1388
  - - C:\Windows\{47EBC39E-B7D5-46f1-8D17-A936026816DD}.exe
      C:\Windows\{47EBC39E-B7D5-46f1-8D17-A936026816DD}.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:3560
    - - C:\Windows\{5E289675-367F-40e2-B77A-54D49EAC9E24}.exe
        
        C:\Windows\{5E289675-367F-40e2-B77A-54D49EAC9E24}.exe
        5⤵
        Executes dropped EXE
        System Location Discovery: System Language Discovery
        
        PID:5368
    - - C:\Windows\SysWOW64\cmd.exe
        
        C:\Windows\system32\cmd.exe /c del C:\Windows\{47EBC~1.EXE > nul
        5⤵
        System Location Discovery: System Language Discovery
        
        PID:600
  - - C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c del C:\Windows\{315B5~1.EXE > nul
      4⤵
      System Location Discovery: System Language Discovery
      PID:5908
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c del C:\Windows\{145D5~1.EXE > nul
    3⤵
    - System Location Discovery: System Language Discovery
    PID:5300
- 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:2524

C:\Windows\system32\sihost.exe
sihost.exe
1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:2540
- C:\Windows\explorer.exe
  explorer.exe /LOADSAVEDWINDOWS
  2⤵
  - Modifies registry class
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1080
- - C:\Windows\{5E289675-367F-40e2-B77A-54D49EAC9E24}.exe
    "C:\Windows\{5E289675-367F-40e2-B77A-54D49EAC9E24}.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:4108

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

{145D5E84-EED2-44b2-9FB6-345343EA11F2}.exe

Path C:\Windows\{145D5E84-EED2-44b2-9FB6-345343EA11F2}.exe
Size 60KB
SHA256 d091edcb33146a0ae86c957d5a6fbdda0b93cd020a587d22ba3978b494c56ecd
MD5 a6135cdaea00fef19d60749cc6d4a8cd
SHA1 415269db6132c9bc1656fe0ff1ab73eb3bccc3cb
SHA512 26b3006900979eafe40f8ff582d6172246ef8b42d8595e07e3b67ee4ba2019f1ac3eafae1651de02b402fbdc1b7da2dd21525c04389d4f27232b66e172f64951
SSDEEP 384:vbLwOs8AHsc4sMfwhKQLroo4/CFsrdHWMZo:vvw9816vhKQLroo4/wQpWMZo
TLSH
T185533B830F997CF2F7810175043A8B7992AB59D4D14FFE9BBF90CC194436691E83E60A
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

{315B505C-9E39-4cec-8AFB-FE9D0F6703B3}.exe

Path C:\Windows\{315B505C-9E39-4cec-8AFB-FE9D0F6703B3}.exe
Size 60KB
SHA256 3b45ede26d0fc0d28ebe30247c30af91a747ff886e96254b7d895351b8ce8f4d
MD5 e3524868dcbe4d28f207e90528a4a707
SHA1 fbe4b68d0b644429d3d42e25a69bde3e3a046691
SHA512 829bc50217de49d704d53af6b092211fbd4104d6f5202acb0c29b685fedc878569594d1e5f0946bc1e2f02e8bafbb2b5c32142bf28098ad709880509a7f3d2b8
SSDEEP 384:vbLwOs8AHsc4sMfwhKQLroe4/CFsrdHWMZo:vvw9816vhKQLroe4/wQpWMZo
TLSH
T13E533A830F9978F2F7810175047A8B7992AB59D4D14FFE9BBF90CC194436691E83E60A
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

{47EBC39E-B7D5-46f1-8D17-A936026816DD}.exe

Path C:\Windows\{47EBC39E-B7D5-46f1-8D17-A936026816DD}.exe
Size 60KB
SHA256 4ef39fa2158f2193022126d2bd1117a552f252252840384bfea6964d6848dae0
MD5 2e5d1f2da5ced20247604c6d00dac1e7
SHA1 126ca2e78935586ffdcd2cfaf69f3bb9051ba2a0
SHA512 3b283e84272cb1a32ce79066f9ef4f6dc7a9fff243ce2157dc198ab23fb79b7ad6f0abceee3eb44c7a8aa90999c4d92c48f0b81e42a5b2a68a20be9ed0fc0db3
SSDEEP 384:vbLwOs8AHsc4sMfwhKQLroc4/CFsrdHWMZo:vvw9816vhKQLroc4/wQpWMZo
TLSH
T1CD533B834F997CF2FB810175043A8BB992AB59D4D14FFE9BBF90CC194436651E83E60A
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

{5E289675-367F-40e2-B77A-54D49EAC9E24}.exe

Path C:\Windows\{5E289675-367F-40e2-B77A-54D49EAC9E24}.exe
Size 60KB
SHA256 2a99cab227cff452d0279cceca38f4613104db56e449ec7bfb0c3671ed1f9366
MD5 38a7fcbccdf23439fa73db852c3dad45
SHA1 0135424cd110548030e684136573ce31421c1d47
SHA512 b28bab6c40efa470544e8493562cc5575b39b93e56724ddd90e522ace8a2ecc26923a2b7eaaa1500b047c7baea00baa5f00f32aeb65897865026136161b96f5c
SSDEEP 384:vbLwOs8AHsc4sMfwhKQLrojp4/CFsrdHWMZo:vvw9816vhKQLrojp4/wQpWMZo
TLSH
T114533A830F9978F2FB810175043A8BB992BB59D4D14FFE9BBF90CC194436651E83E60A
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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