stormser | 20d0659033f8dd6a19faf825ffa62d53b71c69d9c389f91b5f08c5642d2608ee

General

Target
2026-06-30_b2f8832751169b0618e5b03c22bb13e8_elex_wannacry.exe
Size 90KB
Sample260630-x2jdlags9t
SHA256 20d0659033f8dd6a19faf825ffa62d53b71c69d9c389f91b5f08c5642d2608ee
MD5 b2f8832751169b0618e5b03c22bb13e8
SHA1 e1d2899fe413b9196c799d607514877a9a2980ad
SHA512 908b504202a5552591fc63f98bf48d9efcf8fc96df369d0ae694ec0919ba1dda3e9164296a5093fea4dfc8756794f09b3165a6d6d5a07e2d8953fdd8e0dbfc61
SSDEEP 768:vvw9816vhKQLroo4/wQRNrfrunMxVFA3b7glw6:nEGh0ool2unMxVS3Hgl
TLSH
T1FA93C53D5EDA103BE2B7D6B585F126E3FE66B98336095D0E05D243428C23B53AD8AC1D
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/0x000e00000001c554-3.dat	family_stormser
behavioral2/files/0x000e00000001c555-6.dat	family_stormser
behavioral2/files/0x000f00000001c554-13.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
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{28D02F6C-9F4C-485b-BD01-FD352CD39856}	2026-06-30_b2f8832751169b0618e5b03c22bb13e8_elex_wannacry.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{28D02F6C-9F4C-485b-BD01-FD352CD39856}\stubpath = "C:\\Windows\\{28D02F6C-9F4C-485b-BD01-FD352CD39856}.exe"	2026-06-30_b2f8832751169b0618e5b03c22bb13e8_elex_wannacry.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{9796AE17-FB1E-4e5e-8003-3728718718B4}	{28D02F6C-9F4C-485b-BD01-FD352CD39856}.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{9796AE17-FB1E-4e5e-8003-3728718718B4}\stubpath = "C:\\Windows\\{9796AE17-FB1E-4e5e-8003-3728718718B4}.exe"	{28D02F6C-9F4C-485b-BD01-FD352CD39856}.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{5B38ABDC-2F09-47f9-80B0-736A9B39A2AD}	{9796AE17-FB1E-4e5e-8003-3728718718B4}.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{5B38ABDC-2F09-47f9-80B0-736A9B39A2AD}\stubpath = "C:\\Windows\\{5B38ABDC-2F09-47f9-80B0-736A9B39A2AD}.exe"	{9796AE17-FB1E-4e5e-8003-3728718718B4}.exe

Executes dropped EXE 4 IoCs

pid	Process
5140	{28D02F6C-9F4C-485b-BD01-FD352CD39856}.exe
5896	{9796AE17-FB1E-4e5e-8003-3728718718B4}.exe
1580	{5B38ABDC-2F09-47f9-80B0-736A9B39A2AD}.exe
5060	{5B38ABDC-2F09-47f9-80B0-736A9B39A2AD}.exe

Drops file in Windows directory 3 IoCs

description	ioc	Process
File created	C:\Windows\{28D02F6C-9F4C-485b-BD01-FD352CD39856}.exe	2026-06-30_b2f8832751169b0618e5b03c22bb13e8_elex_wannacry.exe
File created	C:\Windows\{9796AE17-FB1E-4e5e-8003-3728718718B4}.exe	{28D02F6C-9F4C-485b-BD01-FD352CD39856}.exe
File created	C:\Windows\{5B38ABDC-2F09-47f9-80B0-736A9B39A2AD}.exe	{9796AE17-FB1E-4e5e-8003-3728718718B4}.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	{5B38ABDC-2F09-47f9-80B0-736A9B39A2AD}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-06-30_b2f8832751169b0618e5b03c22bb13e8_elex_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{28D02F6C-9F4C-485b-BD01-FD352CD39856}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{9796AE17-FB1E-4e5e-8003-3728718718B4}.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	{5B38ABDC-2F09-47f9-80B0-736A9B39A2AD}.exe

Modifies registry class 3 IoCs

description	ioc	Process
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
Key created	\REGISTRY\MACHINE\Software\Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppModel\Deployment\Package\*\S-1-5-21-2132828192-1552876075-2324613956-1000\{FCABC63A-FFB1-480E-8B35-9F5CC2F14324}	explorer.exe

Suspicious use of AdjustPrivilegeToken 7 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	796	2026-06-30_b2f8832751169b0618e5b03c22bb13e8_elex_wannacry.exe
Token: SeIncBasePriorityPrivilege	5140	{28D02F6C-9F4C-485b-BD01-FD352CD39856}.exe
Token: SeIncBasePriorityPrivilege	5896	{9796AE17-FB1E-4e5e-8003-3728718718B4}.exe
Token: SeShutdownPrivilege	2468	explorer.exe
Token: SeCreatePagefilePrivilege	2468	explorer.exe
Token: SeShutdownPrivilege	2468	explorer.exe
Token: SeCreatePagefilePrivilege	2468	explorer.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
5760	sihost.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 796 wrote to memory of 5140	796	2026-06-30_b2f8832751169b0618e5b03c22bb13e8_elex_wannacry.exe	87
PID 796 wrote to memory of 4984	796	2026-06-30_b2f8832751169b0618e5b03c22bb13e8_elex_wannacry.exe	88
PID 5140 wrote to memory of 5896	5140	{28D02F6C-9F4C-485b-BD01-FD352CD39856}.exe	89
PID 5140 wrote to memory of 1140	5140	{28D02F6C-9F4C-485b-BD01-FD352CD39856}.exe	90
PID 5896 wrote to memory of 1580	5896	{9796AE17-FB1E-4e5e-8003-3728718718B4}.exe	91
PID 5896 wrote to memory of 5836	5896	{9796AE17-FB1E-4e5e-8003-3728718718B4}.exe	92
PID 5760 wrote to memory of 2468	5760	sihost.exe	97
PID 2468 wrote to memory of 5060	2468	explorer.exe	98

C:\Users\Admin\AppData\Local\Temp\2026-06-30_b2f8832751169b0618e5b03c22bb13e8_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-06-30_b2f8832751169b0618e5b03c22bb13e8_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:796
- C:\Windows\{28D02F6C-9F4C-485b-BD01-FD352CD39856}.exe
  C:\Windows\{28D02F6C-9F4C-485b-BD01-FD352CD39856}.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:5140
- - C:\Windows\{9796AE17-FB1E-4e5e-8003-3728718718B4}.exe
    C:\Windows\{9796AE17-FB1E-4e5e-8003-3728718718B4}.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:5896
  - - C:\Windows\{5B38ABDC-2F09-47f9-80B0-736A9B39A2AD}.exe
      C:\Windows\{5B38ABDC-2F09-47f9-80B0-736A9B39A2AD}.exe
      4⤵
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      PID:1580
  - - C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c del C:\Windows\{9796A~1.EXE > nul
      4⤵
      System Location Discovery: System Language Discovery
      PID:5836
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c del C:\Windows\{28D02~1.EXE > nul
    3⤵
    - System Location Discovery: System Language Discovery
    PID:1140
- 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:4984

C:\Windows\system32\sihost.exe
sihost.exe
1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:5760
- C:\Windows\explorer.exe
  explorer.exe /LOADSAVEDWINDOWS
  2⤵
  - Modifies registry class
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2468
- - C:\Windows\{5B38ABDC-2F09-47f9-80B0-736A9B39A2AD}.exe
    "C:\Windows\{5B38ABDC-2F09-47f9-80B0-736A9B39A2AD}.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:5060

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

{28D02F6C-9F4C-485b-BD01-FD352CD39856}.exe

Path C:\Windows\{28D02F6C-9F4C-485b-BD01-FD352CD39856}.exe
Size 90KB
SHA256 80513ad503b7b4b586db5d69d6c307120667f0c6813f0e00304eb152d9cb2475
MD5 e0ea69ba59daf07a1f9c80342ad3d6a9
SHA1 da3ed540a5579e56c96f76377c0e03719a18d645
SHA512 c941416dd44f7bee39bc1fc4eda8c0192cacd39e950e77cf8f1da95f176189833e0fa52908cb52262243618a0403a684cd813ef00dd09b01b47734edab8e4c0e
SSDEEP 768:vvw9816vhKQLro14/wQRNrfrunMxVFA3b7glw6:nEGh0o1l2unMxVS3Hgl
TLSH
T1D393C53D5DDA103BE2B7D6B585F126E3FE66B98336095D0E05D243428C23B53AD8AC1D
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

{5B38ABDC-2F09-47f9-80B0-736A9B39A2AD}.exe

Path C:\Windows\{5B38ABDC-2F09-47f9-80B0-736A9B39A2AD}.exe
Size 90KB
SHA256 ac8cbf8d0bf2272b65f405c9057385da06be8e8182ee4bd148d8521858187f50
MD5 3571638593121c1b49bfc94244590668
SHA1 be3644243ba7dcc82a102658c7935bf04c30e73b
SHA512 5b127790643b582c5eea657827e285d2e65b50e8cfd62fd96f994223a960f147241b322c828588d2f12be36d00a0953ab9feae0c8b0cebbc842c8d04e7ee6279
SSDEEP 768:vvw9816vhKQLron4/wQRNrfrunMxVFA3b7glw6:nEGh0onl2unMxVS3Hgl
TLSH
T17293C53D5DDA103BE2B7D6B585F126E7FE66B98336094D0E05D243428C23B53AD8AC1D
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

{9796AE17-FB1E-4e5e-8003-3728718718B4}.exe

Path C:\Windows\{9796AE17-FB1E-4e5e-8003-3728718718B4}.exe
Size 90KB
SHA256 5d4e0b799afe8da701ef03399033be02bb69735bc022ed2235da1bdf8c63f963
MD5 156dd02398fe63a9101b4d48ebf5460e
SHA1 83e1bef4575f64ab21f8e617484aec12400ffabe
SHA512 0af051a81e2fc894531e6d6c76d152352b9d215252bf09c8bf9f7a87700394128f0215414d8a89747d19fba463f0c1bd0ba7ddad27034df25e7d4e61121517ee
SSDEEP 768:vvw9816vhKQLroP4/wQRNrfrunMxVFA3b7glw6:nEGh0oPl2unMxVS3Hgl
TLSH
T14693C53D5DDA103BE2B7D6B585F126E3FE66B9833A095D0E05D243428C23B53AD8AC1D
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