stormser | d80ff8611ab071d4efecd88daddb12dbee37b1144a9f31d963c5d6db17824972

General

Target
2026-06-27_6f86958f6a49b580ccdc9e6c249ed9ea_elex_wannacry.exe
Size 64KB
Sample260629-g1zfesez21
SHA256 d80ff8611ab071d4efecd88daddb12dbee37b1144a9f31d963c5d6db17824972
MD5 6f86958f6a49b580ccdc9e6c249ed9ea
SHA1 2e1d1573437bf712e890e41a7e474e94742e5e09
SHA512 2fc4738def279c8905826ce24fb8d63430b3bedde904998af46c3f2e53c1ea3ec0c9cc037008c3d6e006ff8caf0ec65398fdde61de7e5601e63a532909034963
SSDEEP 384:vbLwOs8AHsc4sMfwhKQLroHk4/CFsrdn0A9lsy4:vvw9816vhKQLroE4/wQH9lsl
TLSH
T196535C834BEE98F2F7D20131056D8AB98277ADC4961EBEAF7F50CE54017B191D83A14B
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 3 IoCs

resource	yara_rule
behavioral2/files/0x000e00000001c57b-3.dat	family_stormser
behavioral2/files/0x000e00000001c57c-6.dat	family_stormser
behavioral2/files/0x000d00000001c57f-13.dat	family_stormser

Boot or Logon Autostart Execution: Active Setup 2 TTPs 6 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\{935A9ADF-E44A-4823-B134-94183DCCA099}\stubpath = "C:\\Windows\\{935A9ADF-E44A-4823-B134-94183DCCA099}.exe"	2026-06-27_6f86958f6a49b580ccdc9e6c249ed9ea_elex_wannacry.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{43858586-9F62-4a6c-B7A0-62BD36681F21}	{935A9ADF-E44A-4823-B134-94183DCCA099}.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{43858586-9F62-4a6c-B7A0-62BD36681F21}\stubpath = "C:\\Windows\\{43858586-9F62-4a6c-B7A0-62BD36681F21}.exe"	{935A9ADF-E44A-4823-B134-94183DCCA099}.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{BF7156C3-593F-44ff-8E15-F28F46F66F65}	{43858586-9F62-4a6c-B7A0-62BD36681F21}.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{BF7156C3-593F-44ff-8E15-F28F46F66F65}\stubpath = "C:\\Windows\\{BF7156C3-593F-44ff-8E15-F28F46F66F65}.exe"	{43858586-9F62-4a6c-B7A0-62BD36681F21}.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{935A9ADF-E44A-4823-B134-94183DCCA099}	2026-06-27_6f86958f6a49b580ccdc9e6c249ed9ea_elex_wannacry.exe

Executes dropped EXE 4 IoCs

pid	Process
2540	{935A9ADF-E44A-4823-B134-94183DCCA099}.exe
1616	{43858586-9F62-4a6c-B7A0-62BD36681F21}.exe
4448	{BF7156C3-593F-44ff-8E15-F28F46F66F65}.exe
5820	{BF7156C3-593F-44ff-8E15-F28F46F66F65}.exe

Drops file in Windows directory 3 IoCs

description	ioc	Process
File created	C:\Windows\{935A9ADF-E44A-4823-B134-94183DCCA099}.exe	2026-06-27_6f86958f6a49b580ccdc9e6c249ed9ea_elex_wannacry.exe
File created	C:\Windows\{43858586-9F62-4a6c-B7A0-62BD36681F21}.exe	{935A9ADF-E44A-4823-B134-94183DCCA099}.exe
File created	C:\Windows\{BF7156C3-593F-44ff-8E15-F28F46F66F65}.exe	{43858586-9F62-4a6c-B7A0-62BD36681F21}.exe

System Location Discovery: System Language Discovery 1 TTPs 8 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	{43858586-9F62-4a6c-B7A0-62BD36681F21}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{BF7156C3-593F-44ff-8E15-F28F46F66F65}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{BF7156C3-593F-44ff-8E15-F28F46F66F65}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-06-27_6f86958f6a49b580ccdc9e6c249ed9ea_elex_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{935A9ADF-E44A-4823-B134-94183DCCA099}.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-1-5-21-3226024100-3888324339-2736661264-1000\{745E77E7-61E7-4531-AB67-067E0C7E8849}	explorer.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{A8CDFF1C-4878-43be-B5FD-F8091C1C60D0}\Instance\	explorer.exe

Suspicious use of AdjustPrivilegeToken 7 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	2580	2026-06-27_6f86958f6a49b580ccdc9e6c249ed9ea_elex_wannacry.exe
Token: SeIncBasePriorityPrivilege	2540	{935A9ADF-E44A-4823-B134-94183DCCA099}.exe
Token: SeIncBasePriorityPrivilege	1616	{43858586-9F62-4a6c-B7A0-62BD36681F21}.exe
Token: SeShutdownPrivilege	2956	explorer.exe
Token: SeCreatePagefilePrivilege	2956	explorer.exe
Token: SeShutdownPrivilege	2956	explorer.exe
Token: SeCreatePagefilePrivilege	2956	explorer.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
5800	sihost.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2580 wrote to memory of 2540	2580	2026-06-27_6f86958f6a49b580ccdc9e6c249ed9ea_elex_wannacry.exe	89
PID 2580 wrote to memory of 1860	2580	2026-06-27_6f86958f6a49b580ccdc9e6c249ed9ea_elex_wannacry.exe	90
PID 2540 wrote to memory of 1616	2540	{935A9ADF-E44A-4823-B134-94183DCCA099}.exe	91
PID 2540 wrote to memory of 5124	2540	{935A9ADF-E44A-4823-B134-94183DCCA099}.exe	92
PID 1616 wrote to memory of 4448	1616	{43858586-9F62-4a6c-B7A0-62BD36681F21}.exe	94
PID 1616 wrote to memory of 3924	1616	{43858586-9F62-4a6c-B7A0-62BD36681F21}.exe	95
PID 5800 wrote to memory of 2956	5800	sihost.exe	100
PID 2956 wrote to memory of 5820	2956	explorer.exe	101

C:\Users\Admin\AppData\Local\Temp\2026-06-27_6f86958f6a49b580ccdc9e6c249ed9ea_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-06-27_6f86958f6a49b580ccdc9e6c249ed9ea_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:2580
- C:\Windows\{935A9ADF-E44A-4823-B134-94183DCCA099}.exe
  C:\Windows\{935A9ADF-E44A-4823-B134-94183DCCA099}.exe
  2⤵
  - Boot or Logon Autostart Execution: Active Setup
  - Executes dropped EXE
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2540
- - C:\Windows\{43858586-9F62-4a6c-B7A0-62BD36681F21}.exe
    C:\Windows\{43858586-9F62-4a6c-B7A0-62BD36681F21}.exe
    3⤵
    - Boot or Logon Autostart Execution: Active Setup
    - Executes dropped EXE
    - Drops file in Windows directory
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:1616
  - - C:\Windows\{BF7156C3-593F-44ff-8E15-F28F46F66F65}.exe
      C:\Windows\{BF7156C3-593F-44ff-8E15-F28F46F66F65}.exe
      4⤵
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      PID:4448
  - - C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c del C:\Windows\{43858~1.EXE > nul
      4⤵
      System Location Discovery: System Language Discovery
      PID:3924
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c del C:\Windows\{935A9~1.EXE > nul
    3⤵
    - System Location Discovery: System Language Discovery
    PID:5124
- 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:1860

C:\Windows\system32\sihost.exe
sihost.exe
1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:5800
- C:\Windows\explorer.exe
  explorer.exe /LOADSAVEDWINDOWS
  2⤵
  - Modifies registry class
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2956
- - C:\Windows\{BF7156C3-593F-44ff-8E15-F28F46F66F65}.exe
    "C:\Windows\{BF7156C3-593F-44ff-8E15-F28F46F66F65}.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:5820

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

Replay Monitor

Loading Replay Monitor...

Downloads

{43858586-9F62-4a6c-B7A0-62BD36681F21}.exe

Path C:\Windows\{43858586-9F62-4a6c-B7A0-62BD36681F21}.exe
Size 64KB
SHA256 e7040b88c4a353df2814de1554c2a07500e71d6789cf35f992f948a5e2ea5cf8
MD5 b63526f4dcc4aa743c3f308832b13e61
SHA1 108d55830e35972fb3448cc833516156ab9a5679
SHA512 8d2413bd6a602ff620c4129e5b6eba40e42acbe5aa8ec56bdef08ed4eeca715ad40f046029b7428f79766746240280290095b0514abd39cfd45ffee7bf129bc7
SSDEEP 384:vbLwOs8AHsc4sMfwhKQLroz4/CFsrdn0A9lsy4:vvw9816vhKQLroz4/wQH9lsl
TLSH
T16A535C834BEE98F2F7D20131056D8AB99277ADC4961EBEAF7F50CE54007B191D83A14B
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

{935A9ADF-E44A-4823-B134-94183DCCA099}.exe

Path C:\Windows\{935A9ADF-E44A-4823-B134-94183DCCA099}.exe
Size 64KB
SHA256 448c64f8c2b7cba7b9934e9dccbe582aac9dba975cdb76dff3388e1c2209c036
MD5 bcfafdeaa59a696dc278b049641874eb
SHA1 937fb878fd2a690c15eb7dcd33a8187a0d0db563
SHA512 50e2178c7572b88f4d3add7a0666ee6d9d70123a9ac4be12a401f1be2be5340949a7f3564e28d0713f21ac30ed961c5c8311dea2c82598396622a8e98addc1a9
SSDEEP 384:vbLwOs8AHsc4sMfwhKQLroLL4/CFsrdn0A9lsy4:vvw9816vhKQLroLL4/wQH9lsl
TLSH
T103535C834BEE98F2F7921131046D8AB98277ADC4961EBEAF7F50CE55007B191D83A14B
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

{BF7156C3-593F-44ff-8E15-F28F46F66F65}.exe

Path C:\Windows\{BF7156C3-593F-44ff-8E15-F28F46F66F65}.exe
Size 64KB
SHA256 508e266f74e51d53ad2f04d71e232abfc58992e590c468fce8874dba8ef6ca06
MD5 876da091b97a1f188debb171fa0eb7dd
SHA1 88ee04b4ce35917c035147c95758f4bbe4723cf3
SHA512 bb7c057c8d6ff92ed006fcdec290f3fc2eadbe5ab975a5e7823cfc15cc7b1acdab12f88fae9ec2dcb10521a4a4ebb80cf6db30ad75d0e0e78907b7d9b097c0cc
SSDEEP 384:vbLwOs8AHsc4sMfwhKQLroc4/CFsrdn0A9lsy4:vvw9816vhKQLroc4/wQH9lsl
TLSH
T149535C834BEE98F2F7D20131046D8A799277ADC4961EBEAF7F50CE54017B191D83A14B
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

Replay Monitor

Loading Replay Monitor...

Downloads