stormser | f593c6222b14b8ff506f2d23d76a71d958faf1a11619dea39d77ae718ac3a16f

General

Target
2026-07-06_e8b5978faaf258a4cf661e04997f208f_elex_wannacry.exe
Size 90KB
Sample260707-ajxf6sbs8k
SHA256 f593c6222b14b8ff506f2d23d76a71d958faf1a11619dea39d77ae718ac3a16f
MD5 e8b5978faaf258a4cf661e04997f208f
SHA1 32fb1ebd87bb61fef7ba70c95a92992318db3e9f
SHA512 0c6ba32320077c31bc6b4c799e0e265247458b260d50220c390d6b8221813b950e2b7da6708916acf64f885281083941f97dd2b1d0786a399e329e7373e8b19b
SSDEEP 768:Qvw9816vhKQLroZ4/wQRNrfrunMxVFA3b7glw6:YEGh0oZl2unMxVS3Hgl
TLSH
T18693C53D5DDA103BE2B7D6B585F126E3FE66B98336095D0E05D243428C23B53AD8AC1D
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
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{050FA27C-78CD-453e-BE7A-1B09F85890B4}	2026-07-06_e8b5978faaf258a4cf661e04997f208f_elex_wannacry.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{050FA27C-78CD-453e-BE7A-1B09F85890B4}\stubpath = "C:\\Windows\\{050FA27C-78CD-453e-BE7A-1B09F85890B4}.exe"	2026-07-06_e8b5978faaf258a4cf661e04997f208f_elex_wannacry.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{9D4A86A5-8E74-4914-A0A8-AAF29DE54E05}	{050FA27C-78CD-453e-BE7A-1B09F85890B4}.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{9D4A86A5-8E74-4914-A0A8-AAF29DE54E05}\stubpath = "C:\\Windows\\{9D4A86A5-8E74-4914-A0A8-AAF29DE54E05}.exe"	{050FA27C-78CD-453e-BE7A-1B09F85890B4}.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{FC27EBCA-DF09-44fb-8795-14047D87575F}	{9D4A86A5-8E74-4914-A0A8-AAF29DE54E05}.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{FC27EBCA-DF09-44fb-8795-14047D87575F}\stubpath = "C:\\Windows\\{FC27EBCA-DF09-44fb-8795-14047D87575F}.exe"	{9D4A86A5-8E74-4914-A0A8-AAF29DE54E05}.exe

Executes dropped EXE 4 IoCs

pid	Process
2336	{050FA27C-78CD-453e-BE7A-1B09F85890B4}.exe
3644	{9D4A86A5-8E74-4914-A0A8-AAF29DE54E05}.exe
4756	{FC27EBCA-DF09-44fb-8795-14047D87575F}.exe
1264	{FC27EBCA-DF09-44fb-8795-14047D87575F}.exe

Drops file in Windows directory 3 IoCs

description	ioc	Process
File created	C:\Windows\{050FA27C-78CD-453e-BE7A-1B09F85890B4}.exe	2026-07-06_e8b5978faaf258a4cf661e04997f208f_elex_wannacry.exe
File created	C:\Windows\{9D4A86A5-8E74-4914-A0A8-AAF29DE54E05}.exe	{050FA27C-78CD-453e-BE7A-1B09F85890B4}.exe
File created	C:\Windows\{FC27EBCA-DF09-44fb-8795-14047D87575F}.exe	{9D4A86A5-8E74-4914-A0A8-AAF29DE54E05}.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	{9D4A86A5-8E74-4914-A0A8-AAF29DE54E05}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{FC27EBCA-DF09-44fb-8795-14047D87575F}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{FC27EBCA-DF09-44fb-8795-14047D87575F}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-07-06_e8b5978faaf258a4cf661e04997f208f_elex_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{050FA27C-78CD-453e-BE7A-1B09F85890B4}.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\{1FE0435A-721E-4D7E-8F23-F97827F248EF}	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	3932	2026-07-06_e8b5978faaf258a4cf661e04997f208f_elex_wannacry.exe
Token: SeIncBasePriorityPrivilege	2336	{050FA27C-78CD-453e-BE7A-1B09F85890B4}.exe
Token: SeIncBasePriorityPrivilege	3644	{9D4A86A5-8E74-4914-A0A8-AAF29DE54E05}.exe
Token: SeShutdownPrivilege	5560	explorer.exe
Token: SeCreatePagefilePrivilege	5560	explorer.exe
Token: SeShutdownPrivilege	5560	explorer.exe
Token: SeCreatePagefilePrivilege	5560	explorer.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
5484	sihost.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 3932 wrote to memory of 2336	3932	2026-07-06_e8b5978faaf258a4cf661e04997f208f_elex_wannacry.exe	87
PID 3932 wrote to memory of 5700	3932	2026-07-06_e8b5978faaf258a4cf661e04997f208f_elex_wannacry.exe	88
PID 2336 wrote to memory of 3644	2336	{050FA27C-78CD-453e-BE7A-1B09F85890B4}.exe	89
PID 2336 wrote to memory of 3104	2336	{050FA27C-78CD-453e-BE7A-1B09F85890B4}.exe	90
PID 3644 wrote to memory of 4756	3644	{9D4A86A5-8E74-4914-A0A8-AAF29DE54E05}.exe	91
PID 3644 wrote to memory of 5648	3644	{9D4A86A5-8E74-4914-A0A8-AAF29DE54E05}.exe	92
PID 5484 wrote to memory of 5560	5484	sihost.exe	97
PID 5560 wrote to memory of 1264	5560	explorer.exe	98

C:\Users\Admin\AppData\Local\Temp\2026-07-06_e8b5978faaf258a4cf661e04997f208f_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-07-06_e8b5978faaf258a4cf661e04997f208f_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:3932
- C:\Windows\{050FA27C-78CD-453e-BE7A-1B09F85890B4}.exe
  C:\Windows\{050FA27C-78CD-453e-BE7A-1B09F85890B4}.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:2336
- - C:\Windows\{9D4A86A5-8E74-4914-A0A8-AAF29DE54E05}.exe
    C:\Windows\{9D4A86A5-8E74-4914-A0A8-AAF29DE54E05}.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:3644
  - - C:\Windows\{FC27EBCA-DF09-44fb-8795-14047D87575F}.exe
      C:\Windows\{FC27EBCA-DF09-44fb-8795-14047D87575F}.exe
      4⤵
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      PID:4756
  - - C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c del C:\Windows\{9D4A8~1.EXE > nul
      4⤵
      System Location Discovery: System Language Discovery
      PID:5648
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c del C:\Windows\{050FA~1.EXE > nul
    3⤵
    - System Location Discovery: System Language Discovery
    PID:3104
- 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:5700

C:\Windows\system32\sihost.exe
sihost.exe
1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:5484
- C:\Windows\explorer.exe
  explorer.exe /LOADSAVEDWINDOWS
  2⤵
  - Modifies registry class
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:5560
- - C:\Windows\{FC27EBCA-DF09-44fb-8795-14047D87575F}.exe
    "C:\Windows\{FC27EBCA-DF09-44fb-8795-14047D87575F}.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:1264

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

{050FA27C-78CD-453e-BE7A-1B09F85890B4}.exe

Path C:\Windows\{050FA27C-78CD-453e-BE7A-1B09F85890B4}.exe
Size 90KB
SHA256 1c08903205f644726a28b6a41d2fe95a1d2238f8e3fae0da67b4ef8491de53bd
MD5 a851d20c92c7c0bbd896071d6eafbe9f
SHA1 2503b501f22a241e2232d944081a20bea86e5f81
SHA512 1e4b857354e542783e5216c710a9f34f05db6e35eb3e38f2e9fd7b37369687dd450488a45f4f838e768991bb6e756cbe9371692b65b8469b065cb77e2137c799
SSDEEP 768:Qvw9816vhKQLroq4/wQRNrfrunMxVFA3b7glw6:YEGh0oql2unMxVS3Hgl
TLSH
T17693C53D5DDA103BE2B7D6B585F125E3FE66B98336095D0E05D243428C23B53AD8AC1D
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

{9D4A86A5-8E74-4914-A0A8-AAF29DE54E05}.exe

Path C:\Windows\{9D4A86A5-8E74-4914-A0A8-AAF29DE54E05}.exe
Size 90KB
SHA256 d036a4846adeb4af2f668797929fee4eccce822a0d87f22474fe901feca9a223
MD5 ff4ed8bb3af3c471764961e2dfad0e65
SHA1 f7c7ed1913d967777bc48310c61aba8ec9d3086c
SHA512 3a0e63c22b45f1dcfcbc2102db3c737f774902ae0a5092037035743f6a0c0fb88f1f350d686f2055af0ad6edc6de21a9e6e2d346693d44c1db845b48e1da238c
SSDEEP 768:Qvw9816vhKQLroV4/wQRNrfrunMxVFA3b7glw6:YEGh0oVl2unMxVS3Hgl
TLSH
T10793C53D5EDA103BE2B7D6B585F125E3FE66B98336095D0E05D243428C23B53AD86C1D
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

{FC27EBCA-DF09-44fb-8795-14047D87575F}.exe

Path C:\Windows\{FC27EBCA-DF09-44fb-8795-14047D87575F}.exe
Size 90KB
SHA256 66da01ae669210dcf4d31ad551ee2ed2775c9208eec05de9047fd4125fbf4cdc
MD5 ef8868c169ca00f13c649b8476975c5c
SHA1 0d0d037383b1be91d4daca368cbebf02bc4f997b
SHA512 a232b8d053007c5940ce268956bdb19ccea67ece481b92dca3e9dd754685ea3fefc21ebc1e747ac5e99f3c92a21a605783c7c7a22f5bb6eb1e910142842d1320
SSDEEP 768:Qvw9816vhKQLro94/wQRNrfrunMxVFA3b7glw6:YEGh0o9l2unMxVS3Hgl
TLSH
T19393C53D5DDA103BE2B7D6B585F125E3FE66B983360A5D0E05D243428C23B53AD8AC1D
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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Downloads