stormser | 57bc0e85b04c4a718b2ce00f42ac5a87b20e1d2a2898c796858efa2f2fb6f259

General

Target
2026-07-09_e279a8a4ccad17dc11d2b4f30f55b474_elex_rincux_wannacry.exe
Size 64KB
Sample260709-jpxtkaev2n
SHA256 57bc0e85b04c4a718b2ce00f42ac5a87b20e1d2a2898c796858efa2f2fb6f259
MD5 e279a8a4ccad17dc11d2b4f30f55b474
SHA1 15b138d865e4dfc965ddbc1860291fdc4acd237d
SHA512 5da3e6ab1ee478eed1bd5a5dcec8d9b13cc0bfb2167d987ca5e33d40c77d718f4177b109d90a3723e9a9c2c7ee9963ffdadbd0218b69f034190969f39997b011
SSDEEP 768:Ovw981AvhKeroCu4/wQxWMZQcpFM1FgDagXP2TyS1tl7lfqvocqcdT3WVda:6EG7ioCulwWMZQcpmgDagIyS1loL7Wra
TLSH
T16C533A439181BDF2FB780134B16A1FB9553EC5B282C82D6F6B53CDAB54E5C23A521B83
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/4948-0-0x0000000000400000-0x0000000000410000-memory.dmp	family_stormser
behavioral2/memory/4948-1-0x0000000000400000-0x0000000000410000-memory.dmp	family_stormser
behavioral2/files/0x000e00000001c59c-5.dat	family_stormser
behavioral2/memory/5504-6-0x0000000000400000-0x0000000000410000-memory.dmp	family_stormser
behavioral2/memory/4948-7-0x0000000000400000-0x0000000000410000-memory.dmp	family_stormser

Detects Windows executables referencing non-Windows User-Agents 5 IoCs

resource	yara_rule
behavioral2/memory/4948-0-0x0000000000400000-0x0000000000410000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
behavioral2/memory/4948-1-0x0000000000400000-0x0000000000410000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
behavioral2/files/0x000e00000001c59c-5.dat	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
behavioral2/memory/5504-6-0x0000000000400000-0x0000000000410000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
behavioral2/memory/4948-7-0x0000000000400000-0x0000000000410000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA

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\{6698B79E-CD2A-4330-BB10-09F4B93CA56A}	2026-07-09_e279a8a4ccad17dc11d2b4f30f55b474_elex_rincux_wannacry.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{6698B79E-CD2A-4330-BB10-09F4B93CA56A}\stubpath = "C:\\Windows\\{6698B79E-CD2A-4330-BB10-09F4B93CA56A}.exe"	2026-07-09_e279a8a4ccad17dc11d2b4f30f55b474_elex_rincux_wannacry.exe

Executes dropped EXE 2 IoCs

pid	Process
5504	{6698B79E-CD2A-4330-BB10-09F4B93CA56A}.exe
3412	{6698B79E-CD2A-4330-BB10-09F4B93CA56A}.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\Windows\{6698B79E-CD2A-4330-BB10-09F4B93CA56A}.exe	2026-07-09_e279a8a4ccad17dc11d2b4f30f55b474_elex_rincux_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	{6698B79E-CD2A-4330-BB10-09F4B93CA56A}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{6698B79E-CD2A-4330-BB10-09F4B93CA56A}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-07-09_e279a8a4ccad17dc11d2b4f30f55b474_elex_rincux_wannacry.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\{45365D3D-FDA9-4BAE-8EA9-3D5D4ABFA9AF}	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	4948	2026-07-09_e279a8a4ccad17dc11d2b4f30f55b474_elex_rincux_wannacry.exe
Token: SeShutdownPrivilege	5016	explorer.exe
Token: SeCreatePagefilePrivilege	5016	explorer.exe
Token: SeShutdownPrivilege	5016	explorer.exe
Token: SeCreatePagefilePrivilege	5016	explorer.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
3404	sihost.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 4948 wrote to memory of 5504	4948	2026-07-09_e279a8a4ccad17dc11d2b4f30f55b474_elex_rincux_wannacry.exe	88
PID 4948 wrote to memory of 1348	4948	2026-07-09_e279a8a4ccad17dc11d2b4f30f55b474_elex_rincux_wannacry.exe	89
PID 3404 wrote to memory of 5016	3404	sihost.exe	94
PID 5016 wrote to memory of 3412	5016	explorer.exe	95

C:\Users\Admin\AppData\Local\Temp\2026-07-09_e279a8a4ccad17dc11d2b4f30f55b474_elex_rincux_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-07-09_e279a8a4ccad17dc11d2b4f30f55b474_elex_rincux_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:4948
- C:\Windows\{6698B79E-CD2A-4330-BB10-09F4B93CA56A}.exe
  C:\Windows\{6698B79E-CD2A-4330-BB10-09F4B93CA56A}.exe
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:5504
- 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:1348

C:\Windows\system32\sihost.exe
sihost.exe
1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:3404
- C:\Windows\explorer.exe
  explorer.exe /LOADSAVEDWINDOWS
  2⤵
  - Modifies registry class
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:5016
- - C:\Windows\{6698B79E-CD2A-4330-BB10-09F4B93CA56A}.exe
    "C:\Windows\{6698B79E-CD2A-4330-BB10-09F4B93CA56A}.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:3412

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

{6698B79E-CD2A-4330-BB10-09F4B93CA56A}.exe

Path C:\Windows\{6698B79E-CD2A-4330-BB10-09F4B93CA56A}.exe
Size 64KB
SHA256 29846b604d6e7de18211416c10a04543f442eed6011d835e2e792deb53073d55
MD5 e89caec711e16d2fdc772487fb1cca88
SHA1 43f70a244f8ae173af73dc5b8d63f13213166848
SHA512 94c25adf8634165e13555f6dd8ce0a5d2bcb2968e96f45679c92cc0a65267fbd5659446524b39b9709a00b486e47cce28610f5cea56f7de70a11223d6222d984
SSDEEP 768:Ovw981AvhKeroCJ4/wQxWMZQcpFM1FgDagXP2TyS1tl7lfqvocqcdT3WVda:6EG7ioCJlwWMZQcpmgDagIyS1loL7Wra
TLSH
T19E533A439181BDF2FB780134B16A1FB9553EC5B282C82D6F6B53CDAB54E5C23A521B83
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/4948-0-0x0000000000400000-0x0000000000410000-memory.dmp

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memory/4948-1-0x0000000000400000-0x0000000000410000-memory.dmp

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memory/4948-7-0x0000000000400000-0x0000000000410000-memory.dmp

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memory/5504-6-0x0000000000400000-0x0000000000410000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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