stormser | 9d0079d816adc851760b0ecf44a76737e31a2b61e9c6c2ed4e9a7c1258562a8a

General

Target
2026-07-01_538324297316c3c766c017e685626a06_elex_wannacry.exe
Size 116KB
Sample260701-vpd71acw4y
SHA256 9d0079d816adc851760b0ecf44a76737e31a2b61e9c6c2ed4e9a7c1258562a8a
MD5 538324297316c3c766c017e685626a06
SHA1 bdc3b8360cb388b8cde81b915e841161b287ae9d
SHA512 82e6b57a97e67befe2906b342ad14a6d386b83701a6c32a022de5c677af10bb9589eed9709f3e61ae50f197cb97ea78a3fcf380a352cec0a7f02499c6c60aebc
SSDEEP 768:Qvw9816vhKQLroZ4/wQRNrfrunMxVFA3b7glwRjMlfwGxEI5nWAwxt6sDntNiLJN:YEGh0oZl2unMxVS3HgdoKjhLJhL
TLSH
T1E1C3C1295FEA0026F1F3D6749AF556DABE36FC5339058E0E019203064D22F16ED96E3E
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 5 IoCs

resource	yara_rule
behavioral2/files/0x000e00000001c5c8-3.dat	family_stormser
behavioral2/files/0x000e00000001c5c9-6.dat	family_stormser
behavioral2/files/0x000f00000001c5c8-13.dat	family_stormser
behavioral2/files/0x000f00000001c5c9-18.dat	family_stormser
behavioral2/files/0x001200000001c5ca-23.dat	family_stormser

Boot or Logon Autostart Execution: Active Setup 2 TTPs 10 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\{C61913BB-8829-49f1-BBC7-ECC543A801B7}\stubpath = "C:\\Windows\\{C61913BB-8829-49f1-BBC7-ECC543A801B7}.exe"	{358D323D-7610-481d-B4D2-3688A187C8C7}.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{B045DDAE-8D11-478e-811B-5D1F7735A62A}	{C61913BB-8829-49f1-BBC7-ECC543A801B7}.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{B045DDAE-8D11-478e-811B-5D1F7735A62A}\stubpath = "C:\\Windows\\{B045DDAE-8D11-478e-811B-5D1F7735A62A}.exe"	{C61913BB-8829-49f1-BBC7-ECC543A801B7}.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{805BE55B-E1A9-44ba-8B32-19E2B9546FD4}	2026-07-01_538324297316c3c766c017e685626a06_elex_wannacry.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{EB0244F9-BA21-4923-93DE-96F7DD4784F9}	{805BE55B-E1A9-44ba-8B32-19E2B9546FD4}.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{358D323D-7610-481d-B4D2-3688A187C8C7}	{EB0244F9-BA21-4923-93DE-96F7DD4784F9}.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{C61913BB-8829-49f1-BBC7-ECC543A801B7}	{358D323D-7610-481d-B4D2-3688A187C8C7}.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{805BE55B-E1A9-44ba-8B32-19E2B9546FD4}\stubpath = "C:\\Windows\\{805BE55B-E1A9-44ba-8B32-19E2B9546FD4}.exe"	2026-07-01_538324297316c3c766c017e685626a06_elex_wannacry.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{EB0244F9-BA21-4923-93DE-96F7DD4784F9}\stubpath = "C:\\Windows\\{EB0244F9-BA21-4923-93DE-96F7DD4784F9}.exe"	{805BE55B-E1A9-44ba-8B32-19E2B9546FD4}.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{358D323D-7610-481d-B4D2-3688A187C8C7}\stubpath = "C:\\Windows\\{358D323D-7610-481d-B4D2-3688A187C8C7}.exe"	{EB0244F9-BA21-4923-93DE-96F7DD4784F9}.exe

Executes dropped EXE 6 IoCs

pid	Process
2588	{805BE55B-E1A9-44ba-8B32-19E2B9546FD4}.exe
1172	{EB0244F9-BA21-4923-93DE-96F7DD4784F9}.exe
5820	{358D323D-7610-481d-B4D2-3688A187C8C7}.exe
4728	{C61913BB-8829-49f1-BBC7-ECC543A801B7}.exe
3520	{B045DDAE-8D11-478e-811B-5D1F7735A62A}.exe
1636	{B045DDAE-8D11-478e-811B-5D1F7735A62A}.exe

Drops file in Windows directory 5 IoCs

description	ioc	Process
File created	C:\Windows\{358D323D-7610-481d-B4D2-3688A187C8C7}.exe	{EB0244F9-BA21-4923-93DE-96F7DD4784F9}.exe
File created	C:\Windows\{C61913BB-8829-49f1-BBC7-ECC543A801B7}.exe	{358D323D-7610-481d-B4D2-3688A187C8C7}.exe
File created	C:\Windows\{B045DDAE-8D11-478e-811B-5D1F7735A62A}.exe	{C61913BB-8829-49f1-BBC7-ECC543A801B7}.exe
File created	C:\Windows\{805BE55B-E1A9-44ba-8B32-19E2B9546FD4}.exe	2026-07-01_538324297316c3c766c017e685626a06_elex_wannacry.exe
File created	C:\Windows\{EB0244F9-BA21-4923-93DE-96F7DD4784F9}.exe	{805BE55B-E1A9-44ba-8B32-19E2B9546FD4}.exe

System Location Discovery: System Language Discovery 1 TTPs 12 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	{B045DDAE-8D11-478e-811B-5D1F7735A62A}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{B045DDAE-8D11-478e-811B-5D1F7735A62A}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-07-01_538324297316c3c766c017e685626a06_elex_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{805BE55B-E1A9-44ba-8B32-19E2B9546FD4}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{EB0244F9-BA21-4923-93DE-96F7DD4784F9}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{358D323D-7610-481d-B4D2-3688A187C8C7}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{C61913BB-8829-49f1-BBC7-ECC543A801B7}.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-1-5-21-3865087520-2734723108-1233268525-1000\{7D3295C9-D06B-481F-BB99-732383E5EE6E}	explorer.exe

Suspicious use of AdjustPrivilegeToken 9 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	3692	2026-07-01_538324297316c3c766c017e685626a06_elex_wannacry.exe
Token: SeIncBasePriorityPrivilege	2588	{805BE55B-E1A9-44ba-8B32-19E2B9546FD4}.exe
Token: SeIncBasePriorityPrivilege	1172	{EB0244F9-BA21-4923-93DE-96F7DD4784F9}.exe
Token: SeIncBasePriorityPrivilege	5820	{358D323D-7610-481d-B4D2-3688A187C8C7}.exe
Token: SeIncBasePriorityPrivilege	4728	{C61913BB-8829-49f1-BBC7-ECC543A801B7}.exe
Token: SeShutdownPrivilege	708	explorer.exe
Token: SeCreatePagefilePrivilege	708	explorer.exe
Token: SeShutdownPrivilege	708	explorer.exe
Token: SeCreatePagefilePrivilege	708	explorer.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
3224	sihost.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 3692 wrote to memory of 2588	3692	2026-07-01_538324297316c3c766c017e685626a06_elex_wannacry.exe	88
PID 3692 wrote to memory of 2684	3692	2026-07-01_538324297316c3c766c017e685626a06_elex_wannacry.exe	89
PID 2588 wrote to memory of 1172	2588	{805BE55B-E1A9-44ba-8B32-19E2B9546FD4}.exe	90
PID 2588 wrote to memory of 688	2588	{805BE55B-E1A9-44ba-8B32-19E2B9546FD4}.exe	91
PID 1172 wrote to memory of 5820	1172	{EB0244F9-BA21-4923-93DE-96F7DD4784F9}.exe	92
PID 1172 wrote to memory of 5516	1172	{EB0244F9-BA21-4923-93DE-96F7DD4784F9}.exe	93
PID 5820 wrote to memory of 4728	5820	{358D323D-7610-481d-B4D2-3688A187C8C7}.exe	94
PID 5820 wrote to memory of 2916	5820	{358D323D-7610-481d-B4D2-3688A187C8C7}.exe	95
PID 4728 wrote to memory of 3520	4728	{C61913BB-8829-49f1-BBC7-ECC543A801B7}.exe	100
PID 4728 wrote to memory of 2788	4728	{C61913BB-8829-49f1-BBC7-ECC543A801B7}.exe	101
PID 3224 wrote to memory of 708	3224	sihost.exe	102
PID 708 wrote to memory of 1636	708	explorer.exe	103

C:\Users\Admin\AppData\Local\Temp\2026-07-01_538324297316c3c766c017e685626a06_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-07-01_538324297316c3c766c017e685626a06_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:3692
- C:\Windows\{805BE55B-E1A9-44ba-8B32-19E2B9546FD4}.exe
  C:\Windows\{805BE55B-E1A9-44ba-8B32-19E2B9546FD4}.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:2588
- - C:\Windows\{EB0244F9-BA21-4923-93DE-96F7DD4784F9}.exe
    C:\Windows\{EB0244F9-BA21-4923-93DE-96F7DD4784F9}.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:1172
  - - C:\Windows\{358D323D-7610-481d-B4D2-3688A187C8C7}.exe
      C:\Windows\{358D323D-7610-481d-B4D2-3688A187C8C7}.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:5820
    - - C:\Windows\{C61913BB-8829-49f1-BBC7-ECC543A801B7}.exe
        
        C:\Windows\{C61913BB-8829-49f1-BBC7-ECC543A801B7}.exe
        5⤵
        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:4728
      - C:\Windows\{B045DDAE-8D11-478e-811B-5D1F7735A62A}.exe
        
        C:\Windows\{B045DDAE-8D11-478e-811B-5D1F7735A62A}.exe
        6⤵
        Executes dropped EXE
        System Location Discovery: System Language Discovery
        
        PID:3520
      - C:\Windows\SysWOW64\cmd.exe
        
        C:\Windows\system32\cmd.exe /c del C:\Windows\{C6191~1.EXE > nul
        6⤵
        System Location Discovery: System Language Discovery
        
        PID:2788
    - - C:\Windows\SysWOW64\cmd.exe
        
        C:\Windows\system32\cmd.exe /c del C:\Windows\{358D3~1.EXE > nul
        5⤵
        System Location Discovery: System Language Discovery
        
        PID:2916
  - - C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c del C:\Windows\{EB024~1.EXE > nul
      4⤵
      System Location Discovery: System Language Discovery
      PID:5516
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c del C:\Windows\{805BE~1.EXE > nul
    3⤵
    - System Location Discovery: System Language Discovery
    PID:688
- 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:2684

C:\Windows\system32\sihost.exe
sihost.exe
1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:3224
- C:\Windows\explorer.exe
  explorer.exe /LOADSAVEDWINDOWS
  2⤵
  - Modifies registry class
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:708
- - C:\Windows\{B045DDAE-8D11-478e-811B-5D1F7735A62A}.exe
    "C:\Windows\{B045DDAE-8D11-478e-811B-5D1F7735A62A}.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:1636

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

{358D323D-7610-481d-B4D2-3688A187C8C7}.exe

Path C:\Windows\{358D323D-7610-481d-B4D2-3688A187C8C7}.exe
Size 116KB
SHA256 4424270052b36e952715ae33246ce6ba025932cc33061cc66acdf9a71db57f8e
MD5 163cc8c278b8330472b6a48b77e6f20d
SHA1 c1243af2f67284bd2952124fd8c4005605b4d8ec
SHA512 9e7d733a3d94c5438d8ac551f6aca8db33cac0fa80da61ed7c24ae52c084e2cf3422910514e71c08a0fe27b9cfb161791abadb61ad70cd0fa91c6ddc7be9cb54
SSDEEP 768:Qvw9816vhKQLroC4/wQRNrfrunMxVFA3b7glwRjMlfwGxEI5nWAwxt6sDntNiLJN:YEGh0oCl2unMxVS3HgdoKjhLJhL
TLSH
T12CC3C0295FEA0026F1F3D6749AF556DABE36FC5339058E0E019203064D22F16ED96E3E
MD5 SHA1 SHA512 SSDEEP TLSH

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{805BE55B-E1A9-44ba-8B32-19E2B9546FD4}.exe

Path C:\Windows\{805BE55B-E1A9-44ba-8B32-19E2B9546FD4}.exe
Size 116KB
SHA256 092cc77c1a81639e204dc999a430aa7b27feebcceff1cb7ff67f66ea92e286e5
MD5 7545b2fc237838f867789c4ec6053145
SHA1 2764d93c777fd20b4684895e8fb22831165fbbd0
SHA512 a766f913e8472686a934c867dabb4f406f067793a8c1f70d03a51a5890fd1c175796dcfce01a13fa5a8f8cf9508bb8019a06dc5a64f648111e0faad42cc83791
SSDEEP 768:Qvw9816vhKQLro34/wQRNrfrunMxVFA3b7glwRjMlfwGxEI5nWAwxt6sDntNiLJN:YEGh0o3l2unMxVS3HgdoKjhLJhL
TLSH
T17FC3C1295FEA0026F1F3D6749AF556DABE36FC5339058E0E019203064D22F16ED96E3E
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

{B045DDAE-8D11-478e-811B-5D1F7735A62A}.exe

Path C:\Windows\{B045DDAE-8D11-478e-811B-5D1F7735A62A}.exe
Size 116KB
SHA256 15b1916b09d5c55a5fcd4711f02ca1717b9194fce62e8374152703ba751fddae
MD5 184899ec699bbc4476276d2f48a118d5
SHA1 76c1b60b8f22d02405c11efc88cfc3c98fa005f0
SHA512 a0aa95786bb00a58a0aa55fe438bff49112e342cf20322b7d77b3dd5dc6037567f1e5e911c062d06d9137c73b86700bbad5e824987cf406dd799f7e40d1ced4b
SSDEEP 768:Qvw9816vhKQLrod4/wQRNrfrunMxVFA3b7glwRjMlfwGxEI5nWAwxt6sDntNiLJN:YEGh0odl2unMxVS3HgdoKjhLJhL
TLSH
T117C3C1295FEA0026F1F3D6749AF556DABE36FC5339058E0E019203064D22F16ED96E3E
MD5 SHA1 SHA512 SSDEEP TLSH

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{C61913BB-8829-49f1-BBC7-ECC543A801B7}.exe

Path C:\Windows\{C61913BB-8829-49f1-BBC7-ECC543A801B7}.exe
Size 116KB
SHA256 086df383352f161dbef33f95766704c0a359beb88633b237ebbb796437f981fd
MD5 bdb7d7d1e3664dd94c4c0a4215e8ee13
SHA1 c30fd8dbc370f6688a6bd283e5b6c710b7d6f124
SHA512 b0e2d66552833d7f8a748bf73f3f36c87ac1977d72da51de39228ef84adb599d5b3bbbd9e7046823f597a71777738cefd5448272e26ad32113f93e6f8d9181bb
SSDEEP 768:Qvw9816vhKQLroe4/wQRNrfrunMxVFA3b7glwRjMlfwGxEI5nWAwxt6sDntNiLJN:YEGh0oel2unMxVS3HgdoKjhLJhL
TLSH
T1C5C3C1295FEA0026F1F3D6749AF556DABE36FC5339058E0E019203064D22F16ED96E3E
MD5 SHA1 SHA512 SSDEEP TLSH

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{EB0244F9-BA21-4923-93DE-96F7DD4784F9}.exe

Path C:\Windows\{EB0244F9-BA21-4923-93DE-96F7DD4784F9}.exe
Size 116KB
SHA256 bb86502829315794250c762deb0d19232966ba0a039f9a2f4100cdac79b8b4fe
MD5 ed104a3ca5d4c10c1be1fd7a51c1e3b5
SHA1 772356b8107f435e0d3dbd030d9e3491e964de99
SHA512 c5020fd4ae179daf475e91fa7a82ade806224afae82b953d01bafff5b19265d45213853bb4789b1fc3b514ee2661156e26d5dee6b3e165556f5d6c2438ceacaf
SSDEEP 768:Qvw9816vhKQLroNL4/wQRNrfrunMxVFA3b7glwRjMlfwGxEI5nWAwxt6sDntNiL3:YEGh0oNLl2unMxVS3HgdoKjhLJhL
TLSH
T16EC3C1295FEA0026F1F3D6749AF556DABE36FC5339058E0E019203064D22F16ED96E3E
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