stormser | a835eed6118b105dea8d57627171fc23c8bef31108372030ce7b174a1e58e50d

General

Target
2026-07-09_e3f9c6c46ce88a2cff5f5db649017d54_elex_wannacry.exe
Size 90KB
Sample260709-tpzchads7k
SHA256 a835eed6118b105dea8d57627171fc23c8bef31108372030ce7b174a1e58e50d
MD5 e3f9c6c46ce88a2cff5f5db649017d54
SHA1 3e09d707cbce081cb6fc719d2f6b448d7e4efba8
SHA512 af3254e2da248d5bb0d24d2a374d617653fce2054d967021f875f345ed5c4548dc6d7cbcc679796f1241b78ccdf75c9828ee2b2f7e87498b2b10b71373205630
SSDEEP 768:Qvw9816vhKQLrot4/wQRNrfrunMxVFA3b7glR:YEGh0otl2unMxVS3Hg/
TLSH
T1BD93B53D5DDA1037E2B7D6B585F126E3FE66B98339091D0E46D243428D23B53AD86C1C
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/0x000e00000001c4c3-3.dat	family_stormser
behavioral2/files/0x000e00000001c4c4-6.dat	family_stormser
behavioral2/files/0x000f00000001c4c3-13.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\{E8E26C85-0025-4cc6-BD83-704C03627474}\stubpath = "C:\\Windows\\{E8E26C85-0025-4cc6-BD83-704C03627474}.exe"	{1489D149-EBC9-43e5-9BB7-6D392023518E}.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{996458B4-A30E-42c1-B566-1DBF64249AE2}	{E8E26C85-0025-4cc6-BD83-704C03627474}.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{996458B4-A30E-42c1-B566-1DBF64249AE2}\stubpath = "C:\\Windows\\{996458B4-A30E-42c1-B566-1DBF64249AE2}.exe"	{E8E26C85-0025-4cc6-BD83-704C03627474}.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{1489D149-EBC9-43e5-9BB7-6D392023518E}	2026-07-09_e3f9c6c46ce88a2cff5f5db649017d54_elex_wannacry.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{1489D149-EBC9-43e5-9BB7-6D392023518E}\stubpath = "C:\\Windows\\{1489D149-EBC9-43e5-9BB7-6D392023518E}.exe"	2026-07-09_e3f9c6c46ce88a2cff5f5db649017d54_elex_wannacry.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{E8E26C85-0025-4cc6-BD83-704C03627474}	{1489D149-EBC9-43e5-9BB7-6D392023518E}.exe

Executes dropped EXE 4 IoCs

pid	Process
5700	{1489D149-EBC9-43e5-9BB7-6D392023518E}.exe
3640	{E8E26C85-0025-4cc6-BD83-704C03627474}.exe
5276	{996458B4-A30E-42c1-B566-1DBF64249AE2}.exe
5068	{996458B4-A30E-42c1-B566-1DBF64249AE2}.exe

Drops file in Windows directory 3 IoCs

description	ioc	Process
File created	C:\Windows\{996458B4-A30E-42c1-B566-1DBF64249AE2}.exe	{E8E26C85-0025-4cc6-BD83-704C03627474}.exe
File created	C:\Windows\{1489D149-EBC9-43e5-9BB7-6D392023518E}.exe	2026-07-09_e3f9c6c46ce88a2cff5f5db649017d54_elex_wannacry.exe
File created	C:\Windows\{E8E26C85-0025-4cc6-BD83-704C03627474}.exe	{1489D149-EBC9-43e5-9BB7-6D392023518E}.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	{E8E26C85-0025-4cc6-BD83-704C03627474}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{996458B4-A30E-42c1-B566-1DBF64249AE2}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-07-09_e3f9c6c46ce88a2cff5f5db649017d54_elex_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{1489D149-EBC9-43e5-9BB7-6D392023518E}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{996458B4-A30E-42c1-B566-1DBF64249AE2}.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-1-5-21-515251955-468707340-1782030364-1000\{8DEA0E26-367B-4B6C-A786-5287555D25A8}	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 7 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	4832	2026-07-09_e3f9c6c46ce88a2cff5f5db649017d54_elex_wannacry.exe
Token: SeIncBasePriorityPrivilege	5700	{1489D149-EBC9-43e5-9BB7-6D392023518E}.exe
Token: SeIncBasePriorityPrivilege	3640	{E8E26C85-0025-4cc6-BD83-704C03627474}.exe
Token: SeShutdownPrivilege	1104	explorer.exe
Token: SeCreatePagefilePrivilege	1104	explorer.exe
Token: SeShutdownPrivilege	1104	explorer.exe
Token: SeCreatePagefilePrivilege	1104	explorer.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
4012	sihost.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 4832 wrote to memory of 5700	4832	2026-07-09_e3f9c6c46ce88a2cff5f5db649017d54_elex_wannacry.exe	88
PID 4832 wrote to memory of 6008	4832	2026-07-09_e3f9c6c46ce88a2cff5f5db649017d54_elex_wannacry.exe	89
PID 5700 wrote to memory of 3640	5700	{1489D149-EBC9-43e5-9BB7-6D392023518E}.exe	90
PID 5700 wrote to memory of 4368	5700	{1489D149-EBC9-43e5-9BB7-6D392023518E}.exe	91
PID 3640 wrote to memory of 5276	3640	{E8E26C85-0025-4cc6-BD83-704C03627474}.exe	92
PID 3640 wrote to memory of 1136	3640	{E8E26C85-0025-4cc6-BD83-704C03627474}.exe	93
PID 4012 wrote to memory of 1104	4012	sihost.exe	98
PID 1104 wrote to memory of 5068	1104	explorer.exe	99

C:\Users\Admin\AppData\Local\Temp\2026-07-09_e3f9c6c46ce88a2cff5f5db649017d54_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-07-09_e3f9c6c46ce88a2cff5f5db649017d54_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:4832
- C:\Windows\{1489D149-EBC9-43e5-9BB7-6D392023518E}.exe
  C:\Windows\{1489D149-EBC9-43e5-9BB7-6D392023518E}.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:5700
- - C:\Windows\{E8E26C85-0025-4cc6-BD83-704C03627474}.exe
    C:\Windows\{E8E26C85-0025-4cc6-BD83-704C03627474}.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:3640
  - - C:\Windows\{996458B4-A30E-42c1-B566-1DBF64249AE2}.exe
      C:\Windows\{996458B4-A30E-42c1-B566-1DBF64249AE2}.exe
      4⤵
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      PID:5276
  - - C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c del C:\Windows\{E8E26~1.EXE > nul
      4⤵
      System Location Discovery: System Language Discovery
      PID:1136
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c del C:\Windows\{1489D~1.EXE > nul
    3⤵
    - System Location Discovery: System Language Discovery
    PID:4368
- 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:6008

C:\Windows\system32\sihost.exe
sihost.exe
1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:4012
- C:\Windows\explorer.exe
  explorer.exe /LOADSAVEDWINDOWS
  2⤵
  - Modifies registry class
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1104
- - C:\Windows\{996458B4-A30E-42c1-B566-1DBF64249AE2}.exe
    "C:\Windows\{996458B4-A30E-42c1-B566-1DBF64249AE2}.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:5068

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

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Downloads

{1489D149-EBC9-43e5-9BB7-6D392023518E}.exe

Path C:\Windows\{1489D149-EBC9-43e5-9BB7-6D392023518E}.exe
Size 90KB
SHA256 7bff6deb4a6629efbec0b4ac269f5db2205091b9ca95a8c0437bc0d9e78c00c7
MD5 ffa6b113f68b840127e42fdadb33a7e8
SHA1 de13a4f9f3e9d7e07a2b63ef38b659a4c9070d53
SHA512 ebfd988c51b177cf00a618d71c84d6a53b3494961d4eb15b01316b642933c94cf863c4d47b5dec8821499011e59edc64ebec101a2ee8c822e34c4ba97f26d445
SSDEEP 768:Qvw9816vhKQLrog4/wQRNrfrunMxVFA3b7glR:YEGh0ogl2unMxVS3Hg/
TLSH
T10193B43D5DDA1037E277D6B585F126E3FE66B983390A1D0E46D243428D23B53AD8AC1C
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

{996458B4-A30E-42c1-B566-1DBF64249AE2}.exe

Path C:\Windows\{996458B4-A30E-42c1-B566-1DBF64249AE2}.exe
Size 90KB
SHA256 1bde619314c72419e164cf71fc80795238ce712f8f629e0abe96148a93365be9
MD5 d7b12f6929d8121ec527ececf265c5f9
SHA1 dcaef810f44732193211ddefcbf26ad98c21fc1e
SHA512 282bf2cc0f991f7b7ec6d81f6a8a78cff8c77e9c6e32fbf4c96a723884cd17737137744c9bb715225d890643f4200dde87edd395a17d9b16ffdd1ca471bfd932
SSDEEP 768:Qvw9816vhKQLroz4/wQRNrfrunMxVFA3b7glR:YEGh0ozl2unMxVS3Hg/
TLSH
T1E493B53D5DDA1037E277D6B585F126E3FE66B983390A1D0E46D243428D23B53AD8AC1C
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

{E8E26C85-0025-4cc6-BD83-704C03627474}.exe

Path C:\Windows\{E8E26C85-0025-4cc6-BD83-704C03627474}.exe
Size 90KB
SHA256 84aeee7204e3fe3f1969c09fe338fc36b0a4d738211eb579dd4a2de4ae9c5507
MD5 cd32377c30060cd9ad7af4b0290777e6
SHA1 60eb4f7e26e2affae9328ba00f40ebf56167f875
SHA512 e8b7b36dafabac1d97f8baeee718863e282c370aababc8952e1b51e6c3cc3162266403aebed6ed57280ed03d96db2fa1b435dcaeef3e8f34b2bfec86f7b7feef
SSDEEP 768:Qvw9816vhKQLro/4/wQRNrfrunMxVFA3b7glR:YEGh0o/l2unMxVS3Hg/
TLSH
T19593B53D5DDA1037E277D6B585F126E3FE66B9833A091D0E46D243428D23B53AD8AC1C
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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Downloads