stormser | fc3830309695b625c8298a4d0ad7feef04b3c0852ed9acaffadf2b840ac31e64

General

Target
2026-07-09_c9a6373d0204fcac944eb258c0b91daf_elex_wannacry.exe
Size 59KB
Sample260709-tzg6zaev2v
SHA256 fc3830309695b625c8298a4d0ad7feef04b3c0852ed9acaffadf2b840ac31e64
MD5 c9a6373d0204fcac944eb258c0b91daf
SHA1 323675ffcdba6061f71746fca32134660aba35aa
SHA512 b7ebc2e75fcc0f95c3239db5c7c73fce5a1c5de7de9eacf368a52b6c10ea8be989678ed9e146fd60ba9e16410c780f5afc423e00662fbb41df1e978a284b6ed0
SSDEEP 384:MbLwOs8AHsc4sMfwhKQLrojXP314/CFsrcGIiXY1nhbHQn:Mvw9816vhKQLrojXf14/wQDIi4dHQ
TLSH
T1AF436D834FE948F2F7911171057D5BB9527BAAC0D209BEDB7F80DE28117B242E53E14A
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 2 IoCs

resource	yara_rule
behavioral2/files/0x000d00000001c57a-3.dat	family_stormser
behavioral2/files/0x000d00000001c57b-6.dat	family_stormser

Boot or Logon Autostart Execution: Active Setup 2 TTPs 4 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\{C8F741D4-C845-4250-909E-1FE37BA16D75}	2026-07-09_c9a6373d0204fcac944eb258c0b91daf_elex_wannacry.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{C8F741D4-C845-4250-909E-1FE37BA16D75}\stubpath = "C:\\Windows\\{C8F741D4-C845-4250-909E-1FE37BA16D75}.exe"	2026-07-09_c9a6373d0204fcac944eb258c0b91daf_elex_wannacry.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{5F1A7651-7414-4bf4-8574-BC38994E99CF}	{C8F741D4-C845-4250-909E-1FE37BA16D75}.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{5F1A7651-7414-4bf4-8574-BC38994E99CF}\stubpath = "C:\\Windows\\{5F1A7651-7414-4bf4-8574-BC38994E99CF}.exe"	{C8F741D4-C845-4250-909E-1FE37BA16D75}.exe

Executes dropped EXE 3 IoCs

pid	Process
6024	{C8F741D4-C845-4250-909E-1FE37BA16D75}.exe
2076	{5F1A7651-7414-4bf4-8574-BC38994E99CF}.exe
1344	{5F1A7651-7414-4bf4-8574-BC38994E99CF}.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\{C8F741D4-C845-4250-909E-1FE37BA16D75}.exe	2026-07-09_c9a6373d0204fcac944eb258c0b91daf_elex_wannacry.exe
File created	C:\Windows\{5F1A7651-7414-4bf4-8574-BC38994E99CF}.exe	{C8F741D4-C845-4250-909E-1FE37BA16D75}.exe

System Location Discovery: System Language Discovery 1 TTPs 6 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	{5F1A7651-7414-4bf4-8574-BC38994E99CF}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{5F1A7651-7414-4bf4-8574-BC38994E99CF}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-07-09_c9a6373d0204fcac944eb258c0b91daf_elex_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{C8F741D4-C845-4250-909E-1FE37BA16D75}.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-1-5-21-3575702013-381963388-2545377694-1000\{F9064626-6578-43E4-9EEA-B6A81BEA0A20}	explorer.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	1676	2026-07-09_c9a6373d0204fcac944eb258c0b91daf_elex_wannacry.exe
Token: SeIncBasePriorityPrivilege	6024	{C8F741D4-C845-4250-909E-1FE37BA16D75}.exe
Token: SeShutdownPrivilege	5500	explorer.exe
Token: SeCreatePagefilePrivilege	5500	explorer.exe
Token: SeShutdownPrivilege	5500	explorer.exe
Token: SeCreatePagefilePrivilege	5500	explorer.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
4440	sihost.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1676 wrote to memory of 6024	1676	2026-07-09_c9a6373d0204fcac944eb258c0b91daf_elex_wannacry.exe	88
PID 1676 wrote to memory of 6016	1676	2026-07-09_c9a6373d0204fcac944eb258c0b91daf_elex_wannacry.exe	89
PID 6024 wrote to memory of 2076	6024	{C8F741D4-C845-4250-909E-1FE37BA16D75}.exe	90
PID 6024 wrote to memory of 1968	6024	{C8F741D4-C845-4250-909E-1FE37BA16D75}.exe	91
PID 4440 wrote to memory of 5500	4440	sihost.exe	96
PID 5500 wrote to memory of 1344	5500	explorer.exe	97

C:\Users\Admin\AppData\Local\Temp\2026-07-09_c9a6373d0204fcac944eb258c0b91daf_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-07-09_c9a6373d0204fcac944eb258c0b91daf_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:1676
- C:\Windows\{C8F741D4-C845-4250-909E-1FE37BA16D75}.exe
  C:\Windows\{C8F741D4-C845-4250-909E-1FE37BA16D75}.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:6024
- - C:\Windows\{5F1A7651-7414-4bf4-8574-BC38994E99CF}.exe
    C:\Windows\{5F1A7651-7414-4bf4-8574-BC38994E99CF}.exe
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:2076
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c del C:\Windows\{C8F74~1.EXE > nul
    3⤵
    - System Location Discovery: System Language Discovery
    PID:1968
- 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:6016

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:5500
- - C:\Windows\{5F1A7651-7414-4bf4-8574-BC38994E99CF}.exe
    "C:\Windows\{5F1A7651-7414-4bf4-8574-BC38994E99CF}.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:1344

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

{5F1A7651-7414-4bf4-8574-BC38994E99CF}.exe

Path C:\Windows\{5F1A7651-7414-4bf4-8574-BC38994E99CF}.exe
Size 59KB
SHA256 19addf16ba5416a808407f797a80bbd7e206d5e75f167e2c9d02eb5f4f000ffe
MD5 83a357d5ca04e9704d44001e22a73545
SHA1 0bb7b268d906103eeec1d691a9e4130ce53ccc79
SHA512 823057e170fa6119bc339ba94aef0a23ebfa532e2f7a32c54b95e7724bb47dc5b9e931156817d53d34aa1901572520f4de71a9619194eb5ac7cd0ba86e6086ab
SSDEEP 384:MbLwOs8AHsc4sMfwhKQLrojXP3e4/CFsrcGIiXY1nhbHQn:Mvw9816vhKQLrojXfe4/wQDIi4dHQ
TLSH
T144436D830FE948F2F7911171057D5BB9527BAAC0D209BEDB7F80DE28517B242E63E14A
MD5 SHA1 SHA512 SSDEEP TLSH

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{C8F741D4-C845-4250-909E-1FE37BA16D75}.exe

Path C:\Windows\{C8F741D4-C845-4250-909E-1FE37BA16D75}.exe
Size 59KB
SHA256 f8ca1183dbdbcf174402467c9ea19d0378b644d5e5ef272bf8136468414a51bc
MD5 a760726090ff25124db3ad645e52219b
SHA1 89f8a0efc96b72a72a04d06f15eb4554da0f1c59
SHA512 8c38196153feb0731494e7aabf86494f47e4e604cfb43a8f6c2fbfc8c1fb9290feb873381e37fee1dffd72cda980e13e6854b1a7c6510f784530630e5a732429
SSDEEP 384:MbLwOs8AHsc4sMfwhKQLrojXP354/CFsrcGIiXY1nhbHQn:Mvw9816vhKQLrojXf54/wQDIi4dHQ
TLSH
T1D5436D834FE948F2F7911171057D5BB9527BAAC0D209BEDB7F80DE28117B242E53E14A
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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