stormser | d789df6c0c78dbf28b02a521baed938aaf62699b0e20eabacc6389d3555b621f

General

Target
2026-07-08_666cee2d9ae05ae1a5bd419914581b4b_elex_wannacry.exe
Size 90KB
Sample260708-wdbheaez8w
SHA256 d789df6c0c78dbf28b02a521baed938aaf62699b0e20eabacc6389d3555b621f
MD5 666cee2d9ae05ae1a5bd419914581b4b
SHA1 75b1608e56ac923ac82a02825764025a961130d1
SHA512 3f1c837bb5c55138a78c0205c0308649a1f5fa60b2d0d9685daae1bb9d48a07c073570429fa289e6e99ccfe40303a0ad973998ec1744a467356f875fd0fa63ae
SSDEEP 768:Qvw9816vhKQLron4/wQRNrfrunMxVFA3b7glw6:YEGh0onl2unMxVS3Hgl
TLSH
T17893C53D5DDA103BE2B7D6B585F126E3FE66B9833A095D0E05D243428C23B53AD8AC1D
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 1 IoCs

resource	yara_rule
behavioral2/files/0x000d00000001c66b-3.dat	family_stormser

Boot or Logon Autostart Execution: Active Setup 2 TTPs 2 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\{D6D03C42-F916-4932-AA3D-68ED8D4E099C}	2026-07-08_666cee2d9ae05ae1a5bd419914581b4b_elex_wannacry.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{D6D03C42-F916-4932-AA3D-68ED8D4E099C}\stubpath = "C:\\Windows\\{D6D03C42-F916-4932-AA3D-68ED8D4E099C}.exe"	2026-07-08_666cee2d9ae05ae1a5bd419914581b4b_elex_wannacry.exe

Executes dropped EXE 2 IoCs

pid	Process
3352	{D6D03C42-F916-4932-AA3D-68ED8D4E099C}.exe
3764	{D6D03C42-F916-4932-AA3D-68ED8D4E099C}.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\Windows\{D6D03C42-F916-4932-AA3D-68ED8D4E099C}.exe	2026-07-08_666cee2d9ae05ae1a5bd419914581b4b_elex_wannacry.exe

System Location Discovery: System Language Discovery 1 TTPs 4 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	{D6D03C42-F916-4932-AA3D-68ED8D4E099C}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-07-08_666cee2d9ae05ae1a5bd419914581b4b_elex_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{D6D03C42-F916-4932-AA3D-68ED8D4E099C}.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\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppModel\Deployment\Package\*\S-1-5-21-2049790993-2338060321-149346055-1000\{12FD541B-8B55-4E5D-A50D-1FC43E75E552}	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 5 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	2180	2026-07-08_666cee2d9ae05ae1a5bd419914581b4b_elex_wannacry.exe
Token: SeShutdownPrivilege	3204	explorer.exe
Token: SeCreatePagefilePrivilege	3204	explorer.exe
Token: SeShutdownPrivilege	3204	explorer.exe
Token: SeCreatePagefilePrivilege	3204	explorer.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
1968	sihost.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2180 wrote to memory of 3352	2180	2026-07-08_666cee2d9ae05ae1a5bd419914581b4b_elex_wannacry.exe	88
PID 2180 wrote to memory of 4748	2180	2026-07-08_666cee2d9ae05ae1a5bd419914581b4b_elex_wannacry.exe	89
PID 1968 wrote to memory of 3204	1968	sihost.exe	94
PID 3204 wrote to memory of 3764	3204	explorer.exe	95

C:\Users\Admin\AppData\Local\Temp\2026-07-08_666cee2d9ae05ae1a5bd419914581b4b_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-07-08_666cee2d9ae05ae1a5bd419914581b4b_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:2180
- C:\Windows\{D6D03C42-F916-4932-AA3D-68ED8D4E099C}.exe
  C:\Windows\{D6D03C42-F916-4932-AA3D-68ED8D4E099C}.exe
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:3352
- 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:4748

C:\Windows\system32\sihost.exe
sihost.exe
1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:1968
- C:\Windows\explorer.exe
  explorer.exe /LOADSAVEDWINDOWS
  2⤵
  - Modifies registry class
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3204
- - C:\Windows\{D6D03C42-F916-4932-AA3D-68ED8D4E099C}.exe
    "C:\Windows\{D6D03C42-F916-4932-AA3D-68ED8D4E099C}.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:3764

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

{D6D03C42-F916-4932-AA3D-68ED8D4E099C}.exe

Path C:\Windows\{D6D03C42-F916-4932-AA3D-68ED8D4E099C}.exe
Size 90KB
SHA256 f0a2588facc53b4954c5e61c04e713bc7c9dbd8cc5708514cf1538707bde342d
MD5 f0e1682fa7efa35f2a343edf8ce0d33a
SHA1 a45c6e006faa1ab32dd66a98a1bc23b0be25f08a
SHA512 e0fd8bcbfda6c1af4bcd2d9f47c11176e28bedd31b8728ff1a1d652051356944d07cbf6030a0d7b47e97beef353e6e9279981400fe1ea59f04c95d446e1cb970
SSDEEP 768:Qvw9816vhKQLrow4/wQRNrfrunMxVFA3b7glw6:YEGh0owl2unMxVS3Hgl
TLSH
T1A493C53D5DDA103BE2B7D6B585F126E3FE66B9833A095D0E05D243428C23B53AD8AC1D
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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