stormser | 7d5e16c642fd1cb8a168ab1686d5a1b88af94b954b6e4e3f091df3be8bc19858

General

Target
2026-07-05_243b378fe707e1d4f5371e69927d05f2_elex_wannacry.exe
Size 60KB
Sample260705-tsb2dahw7l
SHA256 7d5e16c642fd1cb8a168ab1686d5a1b88af94b954b6e4e3f091df3be8bc19858
MD5 243b378fe707e1d4f5371e69927d05f2
SHA1 bef170c5962dbb0452a70a968059e5aee67e611a
SHA512 d14daa4705abb9b60390ce960abc6bec6916bb36ff82986bcc649ff04d34fa0d57935759f707b77f88a8f2efc560b808bd7d9e4d38f6d95abbfed0cfc8394a66
SSDEEP 192:obOzawOs81elJHsc45CcRZOgtShcWaOT2QLrCqwGY04/CFxyNhoy5t/:obLwOs8AHsc4sMfwhKQLros4/CFsrd/
TLSH
T1E953F7834BDA9CF2FB911171087D4BB9927B99D4910EBEDFAF90CD550077292E83A10B
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/4100-0-0x0000000000400000-0x0000000000410000-memory.dmp	family_stormser
behavioral2/memory/4100-1-0x0000000000400000-0x0000000000410000-memory.dmp	family_stormser
behavioral2/files/0x001c00000001c3d7-5.dat	family_stormser
behavioral2/memory/4684-6-0x0000000000400000-0x0000000000410000-memory.dmp	family_stormser
behavioral2/memory/4100-7-0x0000000000400000-0x0000000000410000-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
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{B56C129A-10C5-475c-A12C-91498F7D883A}\stubpath = "C:\\Windows\\{B56C129A-10C5-475c-A12C-91498F7D883A}.exe"	2026-07-05_243b378fe707e1d4f5371e69927d05f2_elex_wannacry.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{B56C129A-10C5-475c-A12C-91498F7D883A}	2026-07-05_243b378fe707e1d4f5371e69927d05f2_elex_wannacry.exe

Executes dropped EXE 2 IoCs

pid	Process
4684	{B56C129A-10C5-475c-A12C-91498F7D883A}.exe
2460	{B56C129A-10C5-475c-A12C-91498F7D883A}.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\Windows\{B56C129A-10C5-475c-A12C-91498F7D883A}.exe	2026-07-05_243b378fe707e1d4f5371e69927d05f2_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	2026-07-05_243b378fe707e1d4f5371e69927d05f2_elex_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{B56C129A-10C5-475c-A12C-91498F7D883A}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{B56C129A-10C5-475c-A12C-91498F7D883A}.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-1-5-21-1797646245-3139070211-3019596475-1000\{2767302C-8FBB-4097-9BBD-47CD4A6CF9A9}	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	4100	2026-07-05_243b378fe707e1d4f5371e69927d05f2_elex_wannacry.exe
Token: SeShutdownPrivilege	6028	explorer.exe
Token: SeCreatePagefilePrivilege	6028	explorer.exe
Token: SeShutdownPrivilege	6028	explorer.exe
Token: SeCreatePagefilePrivilege	6028	explorer.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
3816	sihost.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 4100 wrote to memory of 4684	4100	2026-07-05_243b378fe707e1d4f5371e69927d05f2_elex_wannacry.exe	88
PID 4100 wrote to memory of 2724	4100	2026-07-05_243b378fe707e1d4f5371e69927d05f2_elex_wannacry.exe	89
PID 3816 wrote to memory of 6028	3816	sihost.exe	95
PID 6028 wrote to memory of 2460	6028	explorer.exe	96

C:\Users\Admin\AppData\Local\Temp\2026-07-05_243b378fe707e1d4f5371e69927d05f2_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-07-05_243b378fe707e1d4f5371e69927d05f2_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:4100
- C:\Windows\{B56C129A-10C5-475c-A12C-91498F7D883A}.exe
  C:\Windows\{B56C129A-10C5-475c-A12C-91498F7D883A}.exe
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:4684
- 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:2724

C:\Windows\system32\sihost.exe
sihost.exe
1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:3816
- C:\Windows\explorer.exe
  explorer.exe /LOADSAVEDWINDOWS
  2⤵
  - Modifies registry class
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:6028
- - C:\Windows\{B56C129A-10C5-475c-A12C-91498F7D883A}.exe
    "C:\Windows\{B56C129A-10C5-475c-A12C-91498F7D883A}.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:2460

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

{B56C129A-10C5-475c-A12C-91498F7D883A}.exe

Path C:\Windows\{B56C129A-10C5-475c-A12C-91498F7D883A}.exe
Size 60KB
SHA256 cef8e0b985359ed7300e85b42581d5bbfb5b55ceb4f90f337079545565c9c504
MD5 4d16d28f9ac88a31d0eb1ffa9d8ca801
SHA1 3aeb29a3e75dab8a3db786dd819f024492021dcc
SHA512 0f1cc04304271454ee02822759c83673fe8da0bae69b49abadc9a62af1ae234b209e009daa1fd572948f882ff2c4f8f91ba73fd804daffbbeaf40b955b2e6508
SSDEEP 192:obOzawOs81elJHsc45CcRZOgtShcWaOT2QLrCqwSY04/CFxyNhoy5t/:obLwOs8AHsc4sMfwhKQLroo4/CFsrd/
TLSH
T10A5307834BDE9CF2FB91117108794BB9927B99D4910EBEDFAF90CD550077292E83A10B
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/4100-0-0x0000000000400000-0x0000000000410000-memory.dmp

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memory/4100-1-0x0000000000400000-0x0000000000410000-memory.dmp

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memory/4100-7-0x0000000000400000-0x0000000000410000-memory.dmp

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memory/4684-6-0x0000000000400000-0x0000000000410000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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