stormser | 8649e4e4ff32be4151444ed02940cf93896fb159259de2963fdc9f91a2cbed75

General

Target
2026-07-02_837bc619c8e3337f38bed7d1e07c590e_elex_wannacry.exe
Size 59KB
Sample260703-brgalaev7p
SHA256 8649e4e4ff32be4151444ed02940cf93896fb159259de2963fdc9f91a2cbed75
MD5 837bc619c8e3337f38bed7d1e07c590e
SHA1 300e7d8eb2676114baf05d78f0ef01f3a8a10a29
SHA512 721b9606eade378379c49df9e25cf8b83083700b97401628317b3f457067433b5df4a7deb2b3fd1b57dbc8a529853d2e3bdfef51e5d8cb7ba46efc391415b2ca
SSDEEP 384:MbLwOs8AHsc4sMfwhKQLrojXP3m4/CFsrcGIiXY1nhbHQn:Mvw9816vhKQLrojXfm4/wQDIi4dHQ
TLSH
T12C436C830FE948F2F7911171057D5BB9627BAAC0D209BEDB7F80DE28517B242E53E14A
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 4 IoCs

resource	yara_rule
behavioral2/files/0x000e00000001c571-3.dat	family_stormser
behavioral2/files/0x000e00000001c572-6.dat	family_stormser
behavioral2/files/0x000e00000001c574-13.dat	family_stormser
behavioral2/files/0x000f00000001c572-18.dat	family_stormser

Boot or Logon Autostart Execution: Active Setup 2 TTPs 8 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\{65C3B514-4CD1-4928-B7DE-41C7F5494BB9}	{D1D9972B-4659-4015-9F6F-CCE1512F6EBB}.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{65C3B514-4CD1-4928-B7DE-41C7F5494BB9}\stubpath = "C:\\Windows\\{65C3B514-4CD1-4928-B7DE-41C7F5494BB9}.exe"	{D1D9972B-4659-4015-9F6F-CCE1512F6EBB}.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{13621919-6DD9-4dfa-96CA-7A9A152A1596}	2026-07-02_837bc619c8e3337f38bed7d1e07c590e_elex_wannacry.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{13621919-6DD9-4dfa-96CA-7A9A152A1596}\stubpath = "C:\\Windows\\{13621919-6DD9-4dfa-96CA-7A9A152A1596}.exe"	2026-07-02_837bc619c8e3337f38bed7d1e07c590e_elex_wannacry.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{8215F9B9-EE04-4380-B2A1-03E6A04C3555}	{13621919-6DD9-4dfa-96CA-7A9A152A1596}.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{8215F9B9-EE04-4380-B2A1-03E6A04C3555}\stubpath = "C:\\Windows\\{8215F9B9-EE04-4380-B2A1-03E6A04C3555}.exe"	{13621919-6DD9-4dfa-96CA-7A9A152A1596}.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{D1D9972B-4659-4015-9F6F-CCE1512F6EBB}	{8215F9B9-EE04-4380-B2A1-03E6A04C3555}.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{D1D9972B-4659-4015-9F6F-CCE1512F6EBB}\stubpath = "C:\\Windows\\{D1D9972B-4659-4015-9F6F-CCE1512F6EBB}.exe"	{8215F9B9-EE04-4380-B2A1-03E6A04C3555}.exe

Executes dropped EXE 5 IoCs

pid	Process
716	{13621919-6DD9-4dfa-96CA-7A9A152A1596}.exe
3264	{8215F9B9-EE04-4380-B2A1-03E6A04C3555}.exe
5696	{D1D9972B-4659-4015-9F6F-CCE1512F6EBB}.exe
4660	{65C3B514-4CD1-4928-B7DE-41C7F5494BB9}.exe
5620	{65C3B514-4CD1-4928-B7DE-41C7F5494BB9}.exe

Drops file in Windows directory 4 IoCs

description	ioc	Process
File created	C:\Windows\{13621919-6DD9-4dfa-96CA-7A9A152A1596}.exe	2026-07-02_837bc619c8e3337f38bed7d1e07c590e_elex_wannacry.exe
File created	C:\Windows\{8215F9B9-EE04-4380-B2A1-03E6A04C3555}.exe	{13621919-6DD9-4dfa-96CA-7A9A152A1596}.exe
File created	C:\Windows\{D1D9972B-4659-4015-9F6F-CCE1512F6EBB}.exe	{8215F9B9-EE04-4380-B2A1-03E6A04C3555}.exe
File created	C:\Windows\{65C3B514-4CD1-4928-B7DE-41C7F5494BB9}.exe	{D1D9972B-4659-4015-9F6F-CCE1512F6EBB}.exe

System Location Discovery: System Language Discovery 1 TTPs 10 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	{65C3B514-4CD1-4928-B7DE-41C7F5494BB9}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{65C3B514-4CD1-4928-B7DE-41C7F5494BB9}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-07-02_837bc619c8e3337f38bed7d1e07c590e_elex_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{13621919-6DD9-4dfa-96CA-7A9A152A1596}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{8215F9B9-EE04-4380-B2A1-03E6A04C3555}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{D1D9972B-4659-4015-9F6F-CCE1512F6EBB}.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-1-5-21-3704578903-1610922810-1098216751-1000\{7DE32487-92BD-4559-9CC6-E0F69FEA6DA4}	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 8 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	3464	2026-07-02_837bc619c8e3337f38bed7d1e07c590e_elex_wannacry.exe
Token: SeIncBasePriorityPrivilege	716	{13621919-6DD9-4dfa-96CA-7A9A152A1596}.exe
Token: SeIncBasePriorityPrivilege	3264	{8215F9B9-EE04-4380-B2A1-03E6A04C3555}.exe
Token: SeIncBasePriorityPrivilege	5696	{D1D9972B-4659-4015-9F6F-CCE1512F6EBB}.exe
Token: SeShutdownPrivilege	3828	explorer.exe
Token: SeCreatePagefilePrivilege	3828	explorer.exe
Token: SeShutdownPrivilege	3828	explorer.exe
Token: SeCreatePagefilePrivilege	3828	explorer.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
1152	sihost.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 3464 wrote to memory of 716	3464	2026-07-02_837bc619c8e3337f38bed7d1e07c590e_elex_wannacry.exe	88
PID 3464 wrote to memory of 1012	3464	2026-07-02_837bc619c8e3337f38bed7d1e07c590e_elex_wannacry.exe	89
PID 716 wrote to memory of 3264	716	{13621919-6DD9-4dfa-96CA-7A9A152A1596}.exe	90
PID 716 wrote to memory of 756	716	{13621919-6DD9-4dfa-96CA-7A9A152A1596}.exe	91
PID 3264 wrote to memory of 5696	3264	{8215F9B9-EE04-4380-B2A1-03E6A04C3555}.exe	93
PID 3264 wrote to memory of 5680	3264	{8215F9B9-EE04-4380-B2A1-03E6A04C3555}.exe	94
PID 5696 wrote to memory of 4660	5696	{D1D9972B-4659-4015-9F6F-CCE1512F6EBB}.exe	95
PID 5696 wrote to memory of 1700	5696	{D1D9972B-4659-4015-9F6F-CCE1512F6EBB}.exe	96
PID 1152 wrote to memory of 3828	1152	sihost.exe	101
PID 3828 wrote to memory of 5620	3828	explorer.exe	102

C:\Users\Admin\AppData\Local\Temp\2026-07-02_837bc619c8e3337f38bed7d1e07c590e_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-07-02_837bc619c8e3337f38bed7d1e07c590e_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:3464
- C:\Windows\{13621919-6DD9-4dfa-96CA-7A9A152A1596}.exe
  C:\Windows\{13621919-6DD9-4dfa-96CA-7A9A152A1596}.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:716
- - C:\Windows\{8215F9B9-EE04-4380-B2A1-03E6A04C3555}.exe
    C:\Windows\{8215F9B9-EE04-4380-B2A1-03E6A04C3555}.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:3264
  - - C:\Windows\{D1D9972B-4659-4015-9F6F-CCE1512F6EBB}.exe
      C:\Windows\{D1D9972B-4659-4015-9F6F-CCE1512F6EBB}.exe
      4⤵
      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:5696
    - - C:\Windows\{65C3B514-4CD1-4928-B7DE-41C7F5494BB9}.exe
        
        C:\Windows\{65C3B514-4CD1-4928-B7DE-41C7F5494BB9}.exe
        5⤵
        Executes dropped EXE
        System Location Discovery: System Language Discovery
        
        PID:4660
    - - C:\Windows\SysWOW64\cmd.exe
        
        C:\Windows\system32\cmd.exe /c del C:\Windows\{D1D99~1.EXE > nul
        5⤵
        System Location Discovery: System Language Discovery
        
        PID:1700
  - - C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c del C:\Windows\{8215F~1.EXE > nul
      4⤵
      System Location Discovery: System Language Discovery
      PID:5680
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c del C:\Windows\{13621~1.EXE > nul
    3⤵
    - System Location Discovery: System Language Discovery
    PID:756
- 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:1012

C:\Windows\system32\sihost.exe
sihost.exe
1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:1152
- C:\Windows\explorer.exe
  explorer.exe /LOADSAVEDWINDOWS
  2⤵
  - Modifies registry class
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3828
- - C:\Windows\{65C3B514-4CD1-4928-B7DE-41C7F5494BB9}.exe
    "C:\Windows\{65C3B514-4CD1-4928-B7DE-41C7F5494BB9}.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:5620

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

{13621919-6DD9-4dfa-96CA-7A9A152A1596}.exe

Path C:\Windows\{13621919-6DD9-4dfa-96CA-7A9A152A1596}.exe
Size 59KB
SHA256 4305418eaddc1335ceabbf42d110cc444e0d9463b41e479b8feafc4b518b2d3c
MD5 8dc1db749c60bf729bf6b34be7ae4292
SHA1 6befc808c05cf791c599fbb77fda114a6d33418d
SHA512 047be39aa843f730eaf9ed23791d12a05e4babd50324b5855aaeef6e286cd100039d5d31cbd0119814a7dd3a320834e66d1b16e3435b206319f994123ee70066
SSDEEP 384:MbLwOs8AHsc4sMfwhKQLrojXP3l4/CFsrcGIiXY1nhbHQn:Mvw9816vhKQLrojXfl4/wQDIi4dHQ
TLSH
T183436D830FE948F2F7951171057D5BB9627BAAC0D209BEDB7F80DE28117B242E53E14A
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

{65C3B514-4CD1-4928-B7DE-41C7F5494BB9}.exe

Path C:\Windows\{65C3B514-4CD1-4928-B7DE-41C7F5494BB9}.exe
Size 59KB
SHA256 6c65e697598128b2f9c7f40234a148e1f3145261798d5e80927f38847e424995
MD5 025ba17c2b765cfafaca2f18c4a214b0
SHA1 a810ad1bcc7c32dae0f902ef195bd3deffc8f332
SHA512 722ad52043cbe4f46eb6a54280eb442b184d97e977f447b86149f9f86abebabe7dac205a49e90c88998c71fc6dd8be507bcdeda0501436c0bbb8d1e07c34dbec
SSDEEP 384:MbLwOs8AHsc4sMfwhKQLrojXP3AL4/CFsrcGIiXY1nhbHQn:Mvw9816vhKQLrojXfAL4/wQDIi4dHQ
TLSH
T1E6436C830FE948F2F7911171057D5BB9527BAAC0D209BEDB7F80DE28517B242E53E14A
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

{8215F9B9-EE04-4380-B2A1-03E6A04C3555}.exe

Path C:\Windows\{8215F9B9-EE04-4380-B2A1-03E6A04C3555}.exe
Size 59KB
SHA256 c20624f6a71246d86a961b02a31ca630c20b66f02bc6028274a5b66f529f48ac
MD5 fcb862a50c01c750a9b0b405332b61fe
SHA1 dff46be2fa2b82c9cf06869161b9d635162c5810
SHA512 a8ff2c2601e8787baa7ad5f9a1e30f6eea102f0299fa85ac26d12325d7e2736d34ac26440440aff0ff00180ffa186984058ef83d2da527e7158eedf3ef4ad8f1
SSDEEP 384:MbLwOs8AHsc4sMfwhKQLrojXP3/4/CFsrcGIiXY1nhbHQn:Mvw9816vhKQLrojXf/4/wQDIi4dHQ
TLSH
T194436C830BE948F2F7911171017D5BB9627BAAC0D209BEDB7F80DE28517B242E53E14A
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

{D1D9972B-4659-4015-9F6F-CCE1512F6EBB}.exe

Path C:\Windows\{D1D9972B-4659-4015-9F6F-CCE1512F6EBB}.exe
Size 59KB
SHA256 d56139c4e0f7dc2bf3344016ae6c7072a42e1bebca78849521769ad6f2749336
MD5 bcaba3d15eb5716de657946901beecc5
SHA1 d52c029d3ed19cc4aef683409fd6a301028c1336
SHA512 121d948dac339ae1fa31c040affe282b9f37d18bdd0b197d3de337093d042b0a4d327634c121609153ee9e6d6721c7bd7458c4c9712d45d823e0a583c303d363
SSDEEP 384:MbLwOs8AHsc4sMfwhKQLrojXP3Y4/CFsrcGIiXY1nhbHQn:Mvw9816vhKQLrojXfY4/wQDIi4dHQ
TLSH
T10F436D830FE948F2F7911171057D5BB9527BAAC0D209BEDB7F80DE28517B242E53E14A
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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