stormser | 8988016b538fb48673ef3e93df019558932d4fa46f069033aa645002281c2bd9

General

Target
2026-07-09_a1fb280cde9c9cd3c503621fcde813fa_elex_wannacry.exe
Size 98KB
Sample260709-ry9hqacy91
SHA256 8988016b538fb48673ef3e93df019558932d4fa46f069033aa645002281c2bd9
MD5 a1fb280cde9c9cd3c503621fcde813fa
SHA1 e2ea3644c60d873b75f2705659af1042175ef34a
SHA512 fc176cdcd07765f3c65a5a6267c3c5fc391633fe0180cd3a91c1db4029c792a94d4c155cff293bee007f291193597b43c2717822a6c7f37401a225cbbee33c78
SSDEEP 768:5vw98169hKjroN4/wQCNrfrunMxVFA3b7glw6:lEG/HoNlxunMxVS3Hgl
TLSH
T1B1A3BCBEBDDA103BD176D5798AF519BAFD1AA64336450D4E0187C3218C3BE03AC86D4E
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/memory/1924-0-0x0000000000400000-0x0000000000411000-memory.dmp	family_stormser
behavioral2/memory/1924-1-0x0000000000400000-0x0000000000411000-memory.dmp	family_stormser
behavioral2/files/0x000d00000001c61e-5.dat	family_stormser
behavioral2/memory/4536-6-0x0000000000400000-0x0000000000411000-memory.dmp	family_stormser
behavioral2/memory/1924-8-0x0000000000400000-0x0000000000411000-memory.dmp	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\{3BEDF955-6263-4789-8C59-45DD6705E61D}	2026-07-09_a1fb280cde9c9cd3c503621fcde813fa_elex_wannacry.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{3BEDF955-6263-4789-8C59-45DD6705E61D}\stubpath = "C:\\Windows\\{3BEDF955-6263-4789-8C59-45DD6705E61D}.exe"	2026-07-09_a1fb280cde9c9cd3c503621fcde813fa_elex_wannacry.exe

Executes dropped EXE 2 IoCs

pid	Process
4536	{3BEDF955-6263-4789-8C59-45DD6705E61D}.exe
1404	{3BEDF955-6263-4789-8C59-45DD6705E61D}.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\Windows\{3BEDF955-6263-4789-8C59-45DD6705E61D}.exe	2026-07-09_a1fb280cde9c9cd3c503621fcde813fa_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	2026-07-09_a1fb280cde9c9cd3c503621fcde813fa_elex_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{3BEDF955-6263-4789-8C59-45DD6705E61D}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{3BEDF955-6263-4789-8C59-45DD6705E61D}.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-1-5-21-1921861047-1272335887-115070671-1000\{7B30428B-262B-4D0C-8D67-5881B1E4DBC9}	explorer.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{A8CDFF1C-4878-43be-B5FD-F8091C1C60D0}\Instance\	explorer.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	1924	2026-07-09_a1fb280cde9c9cd3c503621fcde813fa_elex_wannacry.exe
Token: SeShutdownPrivilege	2228	explorer.exe
Token: SeCreatePagefilePrivilege	2228	explorer.exe
Token: SeShutdownPrivilege	2228	explorer.exe
Token: SeCreatePagefilePrivilege	2228	explorer.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
5596	sihost.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1924 wrote to memory of 4536	1924	2026-07-09_a1fb280cde9c9cd3c503621fcde813fa_elex_wannacry.exe	88
PID 1924 wrote to memory of 3448	1924	2026-07-09_a1fb280cde9c9cd3c503621fcde813fa_elex_wannacry.exe	89
PID 5596 wrote to memory of 2228	5596	sihost.exe	94
PID 2228 wrote to memory of 1404	2228	explorer.exe	95

C:\Users\Admin\AppData\Local\Temp\2026-07-09_a1fb280cde9c9cd3c503621fcde813fa_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-07-09_a1fb280cde9c9cd3c503621fcde813fa_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:1924
- C:\Windows\{3BEDF955-6263-4789-8C59-45DD6705E61D}.exe
  C:\Windows\{3BEDF955-6263-4789-8C59-45DD6705E61D}.exe
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:4536
- 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:3448

C:\Windows\system32\sihost.exe
sihost.exe
1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:5596
- C:\Windows\explorer.exe
  explorer.exe /LOADSAVEDWINDOWS
  2⤵
  - Modifies registry class
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2228
- - C:\Windows\{3BEDF955-6263-4789-8C59-45DD6705E61D}.exe
    "C:\Windows\{3BEDF955-6263-4789-8C59-45DD6705E61D}.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:1404

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

{3BEDF955-6263-4789-8C59-45DD6705E61D}.exe

Path C:\Windows\{3BEDF955-6263-4789-8C59-45DD6705E61D}.exe
Size 98KB
SHA256 10d5f174f77f0f7b0adebb7a51411bcefbf6891fbc269c05fce10bc3ca310885
MD5 f32c339da50f70666395585027af6c9a
SHA1 c350e14dc27524da6ee6113af9e5f395aa78788c
SHA512 6b5b4b406bbcbc0e128ea7b2690ac1d2a22d884b8358e055b8c285399dd800fb528dee0655d93e178aeea177d8b152f05ea21430bd7c1b2ad7b9fa4886de5c09
SSDEEP 768:5vw98169hKjro64/wQCNrfrunMxVFA3b7glw6:lEG/Ho6lxunMxVS3Hgl
TLSH
T17BA3BCBEBDDA103BD176D5798AF519BAFD1AA64336450D4E0187C3218C3BE03AC86D4E
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/1924-0-0x0000000000400000-0x0000000000411000-memory.dmp

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memory/1924-1-0x0000000000400000-0x0000000000411000-memory.dmp

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memory/1924-8-0x0000000000400000-0x0000000000411000-memory.dmp

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memory/4536-6-0x0000000000400000-0x0000000000411000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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