stormser | 3cf429ab4fb4e8aad3ee12729d313647feeec888cad6c48ea4ebb60bdc3fefb2

General

Target
2026-07-06_9d0380639187f181803c8647d278db23_elex_wannacry.exe
Size 59KB
Sample260706-wgl4baew4p
SHA256 3cf429ab4fb4e8aad3ee12729d313647feeec888cad6c48ea4ebb60bdc3fefb2
MD5 9d0380639187f181803c8647d278db23
SHA1 c368c503c1bfe77f5b776b3a29be98db69b8eabe
SHA512 74f2285121589d1a75634347ac2c35365e4baaa3b702ae8d84ae47fd4cff47d18e049837797927f87e8db639fe44d6af8eb121c167e348ea38094d565e3b8c4a
SSDEEP 192:MbOzawOs81elJHsc45CcRZOgtShcWaOT2QLrCqwdkbh4/CFxyNhoy5t:MbLwOs8AHsc4sMfwhKQLroG4/CFsrd
TLSH
T1D94308834BDE5CF2FB91123108795AB9926B9AD4950DBEDF7B90CD150037292D43A10B
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 2 IoCs

resource	yara_rule
behavioral2/files/0x000e00000001c5f1-3.dat	family_stormser
behavioral2/files/0x001100000001c5f4-6.dat	family_stormser

Boot or Logon Autostart Execution: Active Setup 2 TTPs 4 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\{5FB0342D-2A76-4139-8E97-CAC28BA7D999}	{4A2A67D7-2B30-43b4-B6AD-3CB0A071D8BE}.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{5FB0342D-2A76-4139-8E97-CAC28BA7D999}\stubpath = "C:\\Windows\\{5FB0342D-2A76-4139-8E97-CAC28BA7D999}.exe"	{4A2A67D7-2B30-43b4-B6AD-3CB0A071D8BE}.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{4A2A67D7-2B30-43b4-B6AD-3CB0A071D8BE}	2026-07-06_9d0380639187f181803c8647d278db23_elex_wannacry.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{4A2A67D7-2B30-43b4-B6AD-3CB0A071D8BE}\stubpath = "C:\\Windows\\{4A2A67D7-2B30-43b4-B6AD-3CB0A071D8BE}.exe"	2026-07-06_9d0380639187f181803c8647d278db23_elex_wannacry.exe

Executes dropped EXE 3 IoCs

pid	Process
1716	{4A2A67D7-2B30-43b4-B6AD-3CB0A071D8BE}.exe
5668	{5FB0342D-2A76-4139-8E97-CAC28BA7D999}.exe
3176	{5FB0342D-2A76-4139-8E97-CAC28BA7D999}.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\{5FB0342D-2A76-4139-8E97-CAC28BA7D999}.exe	{4A2A67D7-2B30-43b4-B6AD-3CB0A071D8BE}.exe
File created	C:\Windows\{4A2A67D7-2B30-43b4-B6AD-3CB0A071D8BE}.exe	2026-07-06_9d0380639187f181803c8647d278db23_elex_wannacry.exe

System Location Discovery: System Language Discovery 1 TTPs 6 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	{4A2A67D7-2B30-43b4-B6AD-3CB0A071D8BE}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{5FB0342D-2A76-4139-8E97-CAC28BA7D999}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{5FB0342D-2A76-4139-8E97-CAC28BA7D999}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-07-06_9d0380639187f181803c8647d278db23_elex_wannacry.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-1-5-21-3575702013-381963388-2545377694-1000\{23157C99-579F-41F3-94DB-D08044CFDC4F}	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 6 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	5404	2026-07-06_9d0380639187f181803c8647d278db23_elex_wannacry.exe
Token: SeIncBasePriorityPrivilege	1716	{4A2A67D7-2B30-43b4-B6AD-3CB0A071D8BE}.exe
Token: SeShutdownPrivilege	2512	explorer.exe
Token: SeCreatePagefilePrivilege	2512	explorer.exe
Token: SeShutdownPrivilege	2512	explorer.exe
Token: SeCreatePagefilePrivilege	2512	explorer.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
1708	sihost.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 5404 wrote to memory of 1716	5404	2026-07-06_9d0380639187f181803c8647d278db23_elex_wannacry.exe	87
PID 5404 wrote to memory of 1076	5404	2026-07-06_9d0380639187f181803c8647d278db23_elex_wannacry.exe	88
PID 1716 wrote to memory of 5668	1716	{4A2A67D7-2B30-43b4-B6AD-3CB0A071D8BE}.exe	93
PID 1716 wrote to memory of 5852	1716	{4A2A67D7-2B30-43b4-B6AD-3CB0A071D8BE}.exe	94
PID 1708 wrote to memory of 2512	1708	sihost.exe	95
PID 2512 wrote to memory of 3176	2512	explorer.exe	96

C:\Users\Admin\AppData\Local\Temp\2026-07-06_9d0380639187f181803c8647d278db23_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-07-06_9d0380639187f181803c8647d278db23_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:5404
- C:\Windows\{4A2A67D7-2B30-43b4-B6AD-3CB0A071D8BE}.exe
  C:\Windows\{4A2A67D7-2B30-43b4-B6AD-3CB0A071D8BE}.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:1716
- - C:\Windows\{5FB0342D-2A76-4139-8E97-CAC28BA7D999}.exe
    C:\Windows\{5FB0342D-2A76-4139-8E97-CAC28BA7D999}.exe
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:5668
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c del C:\Windows\{4A2A6~1.EXE > nul
    3⤵
    - System Location Discovery: System Language Discovery
    PID:5852
- 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:1076

C:\Windows\system32\sihost.exe
sihost.exe
1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:1708
- C:\Windows\explorer.exe
  explorer.exe /LOADSAVEDWINDOWS
  2⤵
  - Modifies registry class
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2512
- - C:\Windows\{5FB0342D-2A76-4139-8E97-CAC28BA7D999}.exe
    "C:\Windows\{5FB0342D-2A76-4139-8E97-CAC28BA7D999}.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:3176

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

{4A2A67D7-2B30-43b4-B6AD-3CB0A071D8BE}.exe

Path C:\Windows\{4A2A67D7-2B30-43b4-B6AD-3CB0A071D8BE}.exe
Size 59KB
SHA256 b80735dabc7d0399b2510f2de615fc7606cd25279f15a15eedc046c521d6ede0
MD5 3ae214ba67d9ea567df0795cd955f629
SHA1 1c9c66f3e0b005928a5716700a0fdf1aecb8e2d3
SHA512 1200e3f6daac633ee2d55ac23756e9f3a8de98f7c065bdeaa1bd44fbff320ebad5d7f0c6d552a28dab4de1037f5609374a1dd9573faba12383a7d5ca7dbf0e5c
SSDEEP 192:MbOzawOs81elJHsc45CcRZOgtShcWaOT2QLrCqw3Sgh4/CFxyNhoy5t:MbLwOs8AHsc4sMfwhKQLro54/CFsrd
TLSH
T1A44318834BDE5CF2FB91127108798AB9927B9AD4910EBEDF7F90CD150037292D53A20B
MD5 SHA1 SHA512 SSDEEP TLSH

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{5FB0342D-2A76-4139-8E97-CAC28BA7D999}.exe

Path C:\Windows\{5FB0342D-2A76-4139-8E97-CAC28BA7D999}.exe
Size 59KB
SHA256 76bb93aec5851ed1168a1dee6d75d782bd291b98842a318e24f94b6a0fb05c58
MD5 9ca58ddaba26f458e3dbeef6afaca03f
SHA1 e9af74707f98ae868a217dc961241a955dc214a9
SHA512 7fdef844eb0f9fb7c69aecc196d677b1e2fb3174c401de1b37714fe4b7366a2245804f1f41cfce3c6ff8a300758e6127f278d4d8c07ea172475214dd5da72e40
SSDEEP 192:MbOzawOs81elJHsc45CcRZOgtShcWaOT2QLrCqw3Gh4/CFxyNhoy5t:MbLwOs8AHsc4sMfwhKQLroS4/CFsrd
TLSH
T1BE4319834BDE5CF2FB911271087D4AB9926B9AD4950DBEDF7F90CD550037292D43A10B
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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