stormser | 35825fd9359bc66de58c1596e7879886929d169f39b1c92998e3f7bca3318d53

General

Target
2026-07-07_734d741a7d8ec920a0b4daebe22350d7_elex_wannacry.exe
Size 59KB
Sample260707-wpghssbv3s
SHA256 35825fd9359bc66de58c1596e7879886929d169f39b1c92998e3f7bca3318d53
MD5 734d741a7d8ec920a0b4daebe22350d7
SHA1 85c9252623ffd516d40e7721ab74f4e69ac8aeee
SHA512 0eb19637c8c6e05b36b267011a23c61538b42ea39cfdfb9791be7b563dd31503b027da3b5a1a2799db5bb2db2e08c0e1a10fd7fbd950372cec81a18b02fb08df
SSDEEP 192:nbOzawOs81elJHsc45CcRZOgtShcWaOT2QLrCqwoY04/CFxyNhoy5t:nbLwOs8AHsc4sMfwhKQLro24/CFsrd
TLSH
T13A43F8835BEE9CF2F791113108798AB9927B99D4950EBEDFBF90CD150037292E53A10B
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/0x000d00000001c697-3.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
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{8BCC577D-1CBD-4c7e-92A3-582BE0EDC962}\stubpath = "C:\\Windows\\{8BCC577D-1CBD-4c7e-92A3-582BE0EDC962}.exe"	2026-07-07_734d741a7d8ec920a0b4daebe22350d7_elex_wannacry.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{8BCC577D-1CBD-4c7e-92A3-582BE0EDC962}	2026-07-07_734d741a7d8ec920a0b4daebe22350d7_elex_wannacry.exe

Executes dropped EXE 2 IoCs

pid	Process
3684	{8BCC577D-1CBD-4c7e-92A3-582BE0EDC962}.exe
2976	{8BCC577D-1CBD-4c7e-92A3-582BE0EDC962}.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\Windows\{8BCC577D-1CBD-4c7e-92A3-582BE0EDC962}.exe	2026-07-07_734d741a7d8ec920a0b4daebe22350d7_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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{8BCC577D-1CBD-4c7e-92A3-582BE0EDC962}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-07-07_734d741a7d8ec920a0b4daebe22350d7_elex_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{8BCC577D-1CBD-4c7e-92A3-582BE0EDC962}.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-1-5-21-2532687178-1633831978-1202193935-1000\{D76E4400-8FC9-4DE6-A5C1-135CD000F980}	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	2636	2026-07-07_734d741a7d8ec920a0b4daebe22350d7_elex_wannacry.exe
Token: SeShutdownPrivilege	1240	explorer.exe
Token: SeCreatePagefilePrivilege	1240	explorer.exe
Token: SeShutdownPrivilege	1240	explorer.exe
Token: SeCreatePagefilePrivilege	1240	explorer.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
1924	sihost.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2636 wrote to memory of 3684	2636	2026-07-07_734d741a7d8ec920a0b4daebe22350d7_elex_wannacry.exe	88
PID 2636 wrote to memory of 5904	2636	2026-07-07_734d741a7d8ec920a0b4daebe22350d7_elex_wannacry.exe	89
PID 1924 wrote to memory of 1240	1924	sihost.exe	94
PID 1240 wrote to memory of 2976	1240	explorer.exe	95

C:\Users\Admin\AppData\Local\Temp\2026-07-07_734d741a7d8ec920a0b4daebe22350d7_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-07-07_734d741a7d8ec920a0b4daebe22350d7_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:2636
- C:\Windows\{8BCC577D-1CBD-4c7e-92A3-582BE0EDC962}.exe
  C:\Windows\{8BCC577D-1CBD-4c7e-92A3-582BE0EDC962}.exe
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:3684
- 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:5904

C:\Windows\system32\sihost.exe
sihost.exe
1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:1924
- C:\Windows\explorer.exe
  explorer.exe /LOADSAVEDWINDOWS
  2⤵
  - Modifies registry class
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1240
- - C:\Windows\{8BCC577D-1CBD-4c7e-92A3-582BE0EDC962}.exe
    "C:\Windows\{8BCC577D-1CBD-4c7e-92A3-582BE0EDC962}.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:2976

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

{8BCC577D-1CBD-4c7e-92A3-582BE0EDC962}.exe

Path C:\Windows\{8BCC577D-1CBD-4c7e-92A3-582BE0EDC962}.exe
Size 59KB
SHA256 ab1b196c93b971fa66abc50e39239565b6ca71c906afad9625b8ac0dc85bb3e3
MD5 eb43afdf9d3059df836e1b2cc66ece0b
SHA1 6fc8768105b21b0c26f07dda6e72f74e6c6e147c
SHA512 b4c6d79de73244111640964931c2000ae4da6667fe1163711835a5fd518c5287bc2202017384d1b6123160a50e12407b7b900936952b4029b6a5483f84ec85e9
SSDEEP 192:nbOzawOs81elJHsc45CcRZOgtShcWaOT2QLrCqwYY04/CFxyNhoy5t:nbLwOs8AHsc4sMfwhKQLroG4/CFsrd
TLSH
T1D443F8834BEE5CF2F791113108798AB9927B99D4950EBEDFBF90CD150037292E53A10B
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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