stormser | 4403f5ce28eccb8d25b9f478c6f0b9b027d0691ef681caf86b2a7720918e5d08

General

Target
2026-06-27_b1e6a630a9fec947d2fd356a4df39532_elex_wannacry.exe
Size 60KB
Sample260629-ec7e1scv7w
SHA256 4403f5ce28eccb8d25b9f478c6f0b9b027d0691ef681caf86b2a7720918e5d08
MD5 b1e6a630a9fec947d2fd356a4df39532
SHA1 29f5cac9e4cbedd68e9c64670e973d7430300157
SHA512 4ee07f4a81623185387402866350d2b3316de90876e880afcd768b2e4ff8138bbfc151d90e9238c1b97dec44673d95af9692e578739c292a7a14bbfdf0a547f9
SSDEEP 384:vbLwOs8AHsc4sMfwhKQLro24/CFsrdHWMZo:vvw9816vhKQLro24/wQpWMZo
TLSH
T186533A830F997CF2FB810175047A8BB992AB59D4D14FFE9BBF90CC194436651E83E60A
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/0x00080000000167e6-3.dat	family_stormser
behavioral2/files/0x000d00000001c5b0-6.dat	family_stormser
behavioral2/files/0x000c00000001c5b3-13.dat	family_stormser
behavioral2/files/0x000e00000001c5b0-18.dat	family_stormser

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

resource	yara_rule
behavioral2/files/0x00080000000167e6-3.dat	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
behavioral2/files/0x000d00000001c5b0-6.dat	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
behavioral2/files/0x000c00000001c5b3-13.dat	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
behavioral2/files/0x000e00000001c5b0-18.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\{E7D51889-25C9-452a-948C-17676804D04B}	{4AA47454-0246-42df-8703-18B088A02FF1}.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{E7D51889-25C9-452a-948C-17676804D04B}\stubpath = "C:\\Windows\\{E7D51889-25C9-452a-948C-17676804D04B}.exe"	{4AA47454-0246-42df-8703-18B088A02FF1}.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{701C56C3-E40C-414b-BFB5-3E9EDFC875AF}	{E7D51889-25C9-452a-948C-17676804D04B}.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{701C56C3-E40C-414b-BFB5-3E9EDFC875AF}\stubpath = "C:\\Windows\\{701C56C3-E40C-414b-BFB5-3E9EDFC875AF}.exe"	{E7D51889-25C9-452a-948C-17676804D04B}.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{92F93C11-47CE-4a0b-B8D3-6910E4A93A6D}	2026-06-27_b1e6a630a9fec947d2fd356a4df39532_elex_wannacry.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{92F93C11-47CE-4a0b-B8D3-6910E4A93A6D}\stubpath = "C:\\Windows\\{92F93C11-47CE-4a0b-B8D3-6910E4A93A6D}.exe"	2026-06-27_b1e6a630a9fec947d2fd356a4df39532_elex_wannacry.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{4AA47454-0246-42df-8703-18B088A02FF1}	{92F93C11-47CE-4a0b-B8D3-6910E4A93A6D}.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{4AA47454-0246-42df-8703-18B088A02FF1}\stubpath = "C:\\Windows\\{4AA47454-0246-42df-8703-18B088A02FF1}.exe"	{92F93C11-47CE-4a0b-B8D3-6910E4A93A6D}.exe

Executes dropped EXE 5 IoCs

pid	Process
2364	{92F93C11-47CE-4a0b-B8D3-6910E4A93A6D}.exe
5836	{4AA47454-0246-42df-8703-18B088A02FF1}.exe
1092	{E7D51889-25C9-452a-948C-17676804D04B}.exe
3104	{701C56C3-E40C-414b-BFB5-3E9EDFC875AF}.exe
2876	{701C56C3-E40C-414b-BFB5-3E9EDFC875AF}.exe

Drops file in Windows directory 4 IoCs

description	ioc	Process
File created	C:\Windows\{E7D51889-25C9-452a-948C-17676804D04B}.exe	{4AA47454-0246-42df-8703-18B088A02FF1}.exe
File created	C:\Windows\{701C56C3-E40C-414b-BFB5-3E9EDFC875AF}.exe	{E7D51889-25C9-452a-948C-17676804D04B}.exe
File created	C:\Windows\{92F93C11-47CE-4a0b-B8D3-6910E4A93A6D}.exe	2026-06-27_b1e6a630a9fec947d2fd356a4df39532_elex_wannacry.exe
File created	C:\Windows\{4AA47454-0246-42df-8703-18B088A02FF1}.exe	{92F93C11-47CE-4a0b-B8D3-6910E4A93A6D}.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	{92F93C11-47CE-4a0b-B8D3-6910E4A93A6D}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{701C56C3-E40C-414b-BFB5-3E9EDFC875AF}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-06-27_b1e6a630a9fec947d2fd356a4df39532_elex_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{4AA47454-0246-42df-8703-18B088A02FF1}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{E7D51889-25C9-452a-948C-17676804D04B}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{701C56C3-E40C-414b-BFB5-3E9EDFC875AF}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Modifies registry class 3 IoCs

description	ioc	Process
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-1-5-21-2289519114-2956110270-1748446682-1000\{D5BB8A3E-B41B-4312-98EB-DCD4F7B942F2}	explorer.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{A8CDFF1C-4878-43be-B5FD-F8091C1C60D0}\Instance\	explorer.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	5692	2026-06-27_b1e6a630a9fec947d2fd356a4df39532_elex_wannacry.exe
Token: SeIncBasePriorityPrivilege	2364	{92F93C11-47CE-4a0b-B8D3-6910E4A93A6D}.exe
Token: SeIncBasePriorityPrivilege	5836	{4AA47454-0246-42df-8703-18B088A02FF1}.exe
Token: SeIncBasePriorityPrivilege	1092	{E7D51889-25C9-452a-948C-17676804D04B}.exe
Token: SeShutdownPrivilege	3552	explorer.exe
Token: SeCreatePagefilePrivilege	3552	explorer.exe
Token: SeShutdownPrivilege	3552	explorer.exe
Token: SeCreatePagefilePrivilege	3552	explorer.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
1916	sihost.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 5692 wrote to memory of 2364	5692	2026-06-27_b1e6a630a9fec947d2fd356a4df39532_elex_wannacry.exe	89
PID 5692 wrote to memory of 4584	5692	2026-06-27_b1e6a630a9fec947d2fd356a4df39532_elex_wannacry.exe	90
PID 2364 wrote to memory of 5836	2364	{92F93C11-47CE-4a0b-B8D3-6910E4A93A6D}.exe	91
PID 2364 wrote to memory of 4144	2364	{92F93C11-47CE-4a0b-B8D3-6910E4A93A6D}.exe	92
PID 5836 wrote to memory of 1092	5836	{4AA47454-0246-42df-8703-18B088A02FF1}.exe	94
PID 5836 wrote to memory of 2608	5836	{4AA47454-0246-42df-8703-18B088A02FF1}.exe	95
PID 1092 wrote to memory of 3104	1092	{E7D51889-25C9-452a-948C-17676804D04B}.exe	96
PID 1092 wrote to memory of 780	1092	{E7D51889-25C9-452a-948C-17676804D04B}.exe	97
PID 1916 wrote to memory of 3552	1916	sihost.exe	102
PID 3552 wrote to memory of 2876	3552	explorer.exe	103

C:\Users\Admin\AppData\Local\Temp\2026-06-27_b1e6a630a9fec947d2fd356a4df39532_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-06-27_b1e6a630a9fec947d2fd356a4df39532_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:5692
- C:\Windows\{92F93C11-47CE-4a0b-B8D3-6910E4A93A6D}.exe
  C:\Windows\{92F93C11-47CE-4a0b-B8D3-6910E4A93A6D}.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:2364
- - C:\Windows\{4AA47454-0246-42df-8703-18B088A02FF1}.exe
    C:\Windows\{4AA47454-0246-42df-8703-18B088A02FF1}.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:5836
  - - C:\Windows\{E7D51889-25C9-452a-948C-17676804D04B}.exe
      C:\Windows\{E7D51889-25C9-452a-948C-17676804D04B}.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:1092
    - - C:\Windows\{701C56C3-E40C-414b-BFB5-3E9EDFC875AF}.exe
        
        C:\Windows\{701C56C3-E40C-414b-BFB5-3E9EDFC875AF}.exe
        5⤵
        Executes dropped EXE
        System Location Discovery: System Language Discovery
        
        PID:3104
    - - C:\Windows\SysWOW64\cmd.exe
        
        C:\Windows\system32\cmd.exe /c del C:\Windows\{E7D51~1.EXE > nul
        5⤵
        System Location Discovery: System Language Discovery
        
        PID:780
  - - C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c del C:\Windows\{4AA47~1.EXE > nul
      4⤵
      System Location Discovery: System Language Discovery
      PID:2608
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c del C:\Windows\{92F93~1.EXE > nul
    3⤵
    - System Location Discovery: System Language Discovery
    PID:4144
- 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:4584

C:\Windows\system32\sihost.exe
sihost.exe
1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:1916
- C:\Windows\explorer.exe
  explorer.exe /LOADSAVEDWINDOWS
  2⤵
  - Modifies registry class
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3552
- - C:\Windows\{701C56C3-E40C-414b-BFB5-3E9EDFC875AF}.exe
    "C:\Windows\{701C56C3-E40C-414b-BFB5-3E9EDFC875AF}.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:2876

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

{4AA47454-0246-42df-8703-18B088A02FF1}.exe

Path C:\Windows\{4AA47454-0246-42df-8703-18B088A02FF1}.exe
Size 60KB
SHA256 cf14372d6e37321200ec9f1762d8a9561157b70d35ceb3d5fcfb2c64da83266e
MD5 31469428fc106aa3997417fc6374bbd4
SHA1 cced0bd4ae98765e067d704421bb9192862d2697
SHA512 8fe161856d8fb83d49a043d017c3ba3c49920ce3fdec9a75779c7893eda21137df28c94f10607a84267b0685677c01a59f1f84370ed36692f99cc25a6ab0496f
SSDEEP 384:vbLwOs8AHsc4sMfwhKQLroC4/CFsrdHWMZo:vvw9816vhKQLroC4/wQpWMZo
TLSH
T141533A830F997CF2FB810175047A8BB992AB59D4D14FFE9BBF90CC194436651E83E60A
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

{701C56C3-E40C-414b-BFB5-3E9EDFC875AF}.exe

Path C:\Windows\{701C56C3-E40C-414b-BFB5-3E9EDFC875AF}.exe
Size 60KB
SHA256 54288b47a117befefadbf41707d8a4db1643cb2e4afa4e072edb41f9e43c0f68
MD5 f1914bc9a1c2f23508d82217b20d8cd0
SHA1 8631a744a2178e27eae4aa39fc668993f702cc9c
SHA512 8f78308d72cff435da1f8e54c510d44fc289a1fa4222af52537685c6f5d1e3e67f4b58b1e46f4d04312a6e0a4b16cbff66812842477f128db9c1f9cba68b4ea9
SSDEEP 384:vbLwOs8AHsc4sMfwhKQLroP4/CFsrdHWMZo:vvw9816vhKQLroP4/wQpWMZo
TLSH
T151533B834F997CF2FB810175043A8BB992AB59D4D14FFE9BBF90CC194436651E83E60A
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

{92F93C11-47CE-4a0b-B8D3-6910E4A93A6D}.exe

Path C:\Windows\{92F93C11-47CE-4a0b-B8D3-6910E4A93A6D}.exe
Size 60KB
SHA256 90ec6206907231dec03f5f5025d82e91e753b60086601f5463961f817b818cb4
MD5 b4aec477d08b7c5fc0a07cf334a53ff7
SHA1 c93052d4f31a6707d82b5eb16b7921798c9b58a9
SHA512 9ac14ca8143a10fc1f403b8cc5ec11eacc3b5afa80f0fce886cdca01ce82ec2badd9607dc7877f510b5a1a2e574c6813d495e323662d8bb5757ea08381223ceb
SSDEEP 384:vbLwOs8AHsc4sMfwhKQLror4/CFsrdHWMZo:vvw9816vhKQLror4/wQpWMZo
TLSH
T1C0533B830F997CF2FB810175047A8B7992AB59D4D14FFE9BBF90CC194436691E83E60A
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

{E7D51889-25C9-452a-948C-17676804D04B}.exe

Path C:\Windows\{E7D51889-25C9-452a-948C-17676804D04B}.exe
Size 60KB
SHA256 df87307c90bafff44157efec63e8299a17b870fcbec5003736eba8b395f13efc
MD5 676a6dda524dafa76b4b428783749a9a
SHA1 be04df9cce0c9b5cacae8e297529fb44b2955e20
SHA512 e7cf1ebf84de1c76291a78d8c568ea923b1d25a1271dc75966d8192784a8a913e627d13d7978a1f8ba45df099443361c42b59ba87de272cc315e78d8c2f9fd08
SSDEEP 384:vbLwOs8AHsc4sMfwhKQLroq4/CFsrdHWMZo:vvw9816vhKQLroq4/wQpWMZo
TLSH
T1F9533A834F997CF2FB810175043A8BB992AB59D4D14FFE9BBF90CC194436651E83E60A
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