stormser | c9eaf94706b8bde2c1b1a553df536a921f97e3989aaaebd8388e1d5717e6f00d

General

Target
2026-10-23_40ab83e40ffd7a96f6b192401379e316_elex_wannacry.exe
Size 60KB
Sample261023-p9d5vaby2x
SHA256 c9eaf94706b8bde2c1b1a553df536a921f97e3989aaaebd8388e1d5717e6f00d
MD5 40ab83e40ffd7a96f6b192401379e316
SHA1 598e10367c497906346a9b999cc70dc3717fc0b7
SHA512 0f53efbeda3041b81e85f44024667af50e4aa63d9656692037263a3580e60a8a4b48c4e2db30599df9d19e49a7b2f28344336b9b135d108980e1334473da6069
SSDEEP 192:pbOzawOs81elJHsc45CcRZOgtShcWaOT2QLrCqw65Y04/CFxyNhoy5t:pbLwOs8AHsc4sMfwhKQLro6L4/CFsrd
TLSH
T1D553F8834BDE5CF2F691123108798AB9927B99D4950EBEDFBF90CD154037292E53E10B
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

discovery execution 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
behavioral1/files/0x00070000000243b7-2.dat	family_stormser
behavioral1/files/0x00080000000243a7-5.dat	family_stormser
behavioral1/files/0x00080000000243bf-10.dat	family_stormser
behavioral1/files/0x00090000000243a7-14.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\{7A2F36BD-EC7A-4066-A77C-0323BF77C77C}	2026-10-23_40ab83e40ffd7a96f6b192401379e316_elex_wannacry.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{7A2F36BD-EC7A-4066-A77C-0323BF77C77C}\stubpath = "C:\\Windows\\{7A2F36BD-EC7A-4066-A77C-0323BF77C77C}.exe"	2026-10-23_40ab83e40ffd7a96f6b192401379e316_elex_wannacry.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{ADF76296-C339-4507-A398-3E1FB002E841}	{7A2F36BD-EC7A-4066-A77C-0323BF77C77C}.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{ADF76296-C339-4507-A398-3E1FB002E841}\stubpath = "C:\\Windows\\{ADF76296-C339-4507-A398-3E1FB002E841}.exe"	{7A2F36BD-EC7A-4066-A77C-0323BF77C77C}.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{31889A38-468A-465b-9418-4E04B3925E14}	{ADF76296-C339-4507-A398-3E1FB002E841}.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{31889A38-468A-465b-9418-4E04B3925E14}\stubpath = "C:\\Windows\\{31889A38-468A-465b-9418-4E04B3925E14}.exe"	{ADF76296-C339-4507-A398-3E1FB002E841}.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{EC3CFF0C-BCC1-4356-82F0-E058B30057ED}	{31889A38-468A-465b-9418-4E04B3925E14}.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{EC3CFF0C-BCC1-4356-82F0-E058B30057ED}\stubpath = "C:\\Windows\\{EC3CFF0C-BCC1-4356-82F0-E058B30057ED}.exe"	{31889A38-468A-465b-9418-4E04B3925E14}.exe

Executes dropped EXE 4 IoCs

pid	Process
2504	{7A2F36BD-EC7A-4066-A77C-0323BF77C77C}.exe
4476	{ADF76296-C339-4507-A398-3E1FB002E841}.exe
2864	{31889A38-468A-465b-9418-4E04B3925E14}.exe
1548	{EC3CFF0C-BCC1-4356-82F0-E058B30057ED}.exe

Drops file in Windows directory 4 IoCs

description	ioc	Process
File created	C:\Windows\{EC3CFF0C-BCC1-4356-82F0-E058B30057ED}.exe	{31889A38-468A-465b-9418-4E04B3925E14}.exe
File created	C:\Windows\{7A2F36BD-EC7A-4066-A77C-0323BF77C77C}.exe	2026-10-23_40ab83e40ffd7a96f6b192401379e316_elex_wannacry.exe
File created	C:\Windows\{ADF76296-C339-4507-A398-3E1FB002E841}.exe	{7A2F36BD-EC7A-4066-A77C-0323BF77C77C}.exe
File created	C:\Windows\{31889A38-468A-465b-9418-4E04B3925E14}.exe	{ADF76296-C339-4507-A398-3E1FB002E841}.exe

Executes a command shell one-liner 1 TTPs 4 IoCs

Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

execution

Windows Command Shell

T1059.003

pid	Process
2060	cmd.exe
1232	cmd.exe
3840	cmd.exe
2264	cmd.exe

System Location Discovery: System Language Discovery 1 TTPs 9 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	{EC3CFF0C-BCC1-4356-82F0-E058B30057ED}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{7A2F36BD-EC7A-4066-A77C-0323BF77C77C}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{ADF76296-C339-4507-A398-3E1FB002E841}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{31889A38-468A-465b-9418-4E04B3925E14}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-10-23_40ab83e40ffd7a96f6b192401379e316_elex_wannacry.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	2672	2026-10-23_40ab83e40ffd7a96f6b192401379e316_elex_wannacry.exe
Token: SeIncBasePriorityPrivilege	2504	{7A2F36BD-EC7A-4066-A77C-0323BF77C77C}.exe
Token: SeIncBasePriorityPrivilege	4476	{ADF76296-C339-4507-A398-3E1FB002E841}.exe
Token: SeIncBasePriorityPrivilege	2864	{31889A38-468A-465b-9418-4E04B3925E14}.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2672 wrote to memory of 2504	2672	2026-10-23_40ab83e40ffd7a96f6b192401379e316_elex_wannacry.exe	91
PID 2672 wrote to memory of 2060	2672	2026-10-23_40ab83e40ffd7a96f6b192401379e316_elex_wannacry.exe	92
PID 2504 wrote to memory of 4476	2504	{7A2F36BD-EC7A-4066-A77C-0323BF77C77C}.exe	93
PID 2504 wrote to memory of 1232	2504	{7A2F36BD-EC7A-4066-A77C-0323BF77C77C}.exe	94
PID 4476 wrote to memory of 2864	4476	{ADF76296-C339-4507-A398-3E1FB002E841}.exe	97
PID 4476 wrote to memory of 3840	4476	{ADF76296-C339-4507-A398-3E1FB002E841}.exe	98
PID 2864 wrote to memory of 1548	2864	{31889A38-468A-465b-9418-4E04B3925E14}.exe	99
PID 2864 wrote to memory of 2264	2864	{31889A38-468A-465b-9418-4E04B3925E14}.exe	100

C:\Users\Admin\AppData\Local\Temp\2026-10-23_40ab83e40ffd7a96f6b192401379e316_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-10-23_40ab83e40ffd7a96f6b192401379e316_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:2672
- C:\Windows\{7A2F36BD-EC7A-4066-A77C-0323BF77C77C}.exe
  C:\Windows\{7A2F36BD-EC7A-4066-A77C-0323BF77C77C}.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:2504
- - C:\Windows\{ADF76296-C339-4507-A398-3E1FB002E841}.exe
    C:\Windows\{ADF76296-C339-4507-A398-3E1FB002E841}.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:4476
  - - C:\Windows\{31889A38-468A-465b-9418-4E04B3925E14}.exe
      C:\Windows\{31889A38-468A-465b-9418-4E04B3925E14}.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:2864
    - - C:\Windows\{EC3CFF0C-BCC1-4356-82F0-E058B30057ED}.exe
        
        C:\Windows\{EC3CFF0C-BCC1-4356-82F0-E058B30057ED}.exe
        5⤵
        Executes dropped EXE
        System Location Discovery: System Language Discovery
        
        PID:1548
    - - C:\Windows\SysWOW64\cmd.exe
        
        C:\Windows\system32\cmd.exe /c del C:\Windows\{31889~1.EXE > nul
        5⤵
        Executes a command shell one-liner
        System Location Discovery: System Language Discovery
        
        PID:2264
  - - C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c del C:\Windows\{ADF76~1.EXE > nul
      4⤵
      Executes a command shell one-liner
      System Location Discovery: System Language Discovery
      PID:3840
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c del C:\Windows\{7A2F3~1.EXE > nul
    3⤵
    - Executes a command shell one-liner
    - System Location Discovery: System Language Discovery
    PID:1232
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c del C:\Users\Admin\AppData\Local\Temp\2026-1~1.EXE > nul
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  PID:2060

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

Windows Command Shell

1

T1059.003

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

{31889A38-468A-465b-9418-4E04B3925E14}.exe

Path C:\Windows\{31889A38-468A-465b-9418-4E04B3925E14}.exe
Size 60KB
SHA256 901333dbf00fb4c4b08ee4197d9eed0b8d7cc4bee3aa85d413591ed697db27b7
MD5 bac8a62be01bf1a6968742e6a145f562
SHA1 349ea7b0abc45341b600112c3ba287f7e48bb9c5
SHA512 14ed1ed106066f2e348c86304f41e91cd68aedb8911206aa19de76f9976aea7863b0cf14422e393f9193cec4ffbc22096bd234b485f01670d6cc9823c0aedeeb
SSDEEP 192:pbOzawOs81elJHsc45CcRZOgtShcWaOT2QLrCqwNY04/CFxyNhoy5t:pbLwOs8AHsc4sMfwhKQLrof4/CFsrd
TLSH
T1755309834BEE9CF2F791117108798AB9927B99C4950EBEDFBF90CD154037292E53A10B
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

{7A2F36BD-EC7A-4066-A77C-0323BF77C77C}.exe

Path C:\Windows\{7A2F36BD-EC7A-4066-A77C-0323BF77C77C}.exe
Size 60KB
SHA256 f814021d451efe4a0f53dcf653eff9bcde91a2c41116626e2bc0ea456bc20f94
MD5 167d29f71a115ea8739915e589e6b201
SHA1 43b56fcb71d5057d637be064ddb3c4fab60d957b
SHA512 c6ff24d58095d08d9ce99310a87de916c2cf11d2df84c715ce18e382ef13b6a5150e5e2c4952892b452ab93f790712dd6004a477eef33818f1f3d6d36997d559
SSDEEP 192:pbOzawOs81elJHsc45CcRZOgtShcWaOT2QLrCqwTY04/CFxyNhoy5t:pbLwOs8AHsc4sMfwhKQLro14/CFsrd
TLSH
T12E5308834BDE5CF2F791117108798AB9927B99D4950EBEDFBF90CD150037292E53A10B
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

{ADF76296-C339-4507-A398-3E1FB002E841}.exe

Path C:\Windows\{ADF76296-C339-4507-A398-3E1FB002E841}.exe
Size 60KB
SHA256 64f31a478c6769d48a451bc9580dac4629c72e5a1fdbd69a2d3a5afb3737088e
MD5 ae0f11f2ce54448154db1817a5b24400
SHA1 abef90a7c4e3027634ed99076d2b55ba779a2f1b
SHA512 5d691e2a09440b9f506128ef4026ae332e00a8fc0af2b80fad04830ce721699e80441cb204836c48ce8ea39524459b3e30c3a4515ff7c06a0a5c8daab1fd02e5
SSDEEP 192:pbOzawOs81elJHsc45CcRZOgtShcWaOT2QLrCqwZY04/CFxyNhoy5t:pbLwOs8AHsc4sMfwhKQLror4/CFsrd
TLSH
T1E15309834BDE9CF2F791113108798AB9927B99D4950EBEDFBF90CD154037292E53A10B
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

{EC3CFF0C-BCC1-4356-82F0-E058B30057ED}.exe

Path C:\Windows\{EC3CFF0C-BCC1-4356-82F0-E058B30057ED}.exe
Size 60KB
SHA256 68e75f5213902d13de29ecec5cff36b7fb92be312c7b8d0fe811f6026aceb05e
MD5 8f39a656c63c65066f2882c3572204ee
SHA1 3b3a06c31e5427353bec8e9c2cb1587682ca5ede
SHA512 5133d8f0647a471100e3c937fb97e5c1dc3c14973ab944f8ba496cd89b95360b60ba380c1e59d8e98c1ed02c0106aac3837c8cf6e22629d332734a731ce7d1e9
SSDEEP 192:pbOzawOs81elJHsc45CcRZOgtShcWaOT2QLrCqwuY04/CFxyNhoy5t:pbLwOs8AHsc4sMfwhKQLroU4/CFsrd
TLSH
T1EC5308834BDE9CF2F791113108798AB9927B9AC4910EBEDFBF90CD150037292E53A10B
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