stormser | a4d5fb677ae1e9057b6b6f92bfa0fa4179c739d696bfaa542b606f979d68200e

General

Target
2026-08-10_b200e6b5fb524569012c7bf18b801417_elex_wannacry.exe
Size 60KB
Sample260810-gnkfqsck3y
SHA256 a4d5fb677ae1e9057b6b6f92bfa0fa4179c739d696bfaa542b606f979d68200e
MD5 b200e6b5fb524569012c7bf18b801417
SHA1 d13862892463f38fe975e13ae994b3773c1dc698
SHA512 4dc87e469b52935f52f981170148a5b0e53958bcdcd6fd47aba04f48363f7c9e33acc1bfb4f3f8bdf96953e581eabea70e65633c53fa4e1716e3e9ed051ba686
SSDEEP 192:pbOzawOs81elJHsc45CcRZOgtShcWaOT2QLrCqwkY04/CFxyNhoy5t:pbLwOs8AHsc4sMfwhKQLroS4/CFsrd
TLSH
T1995309834BEE5CF2F791117108794AB9927B99C4950EBEDFBF90CD154037292E53A10B
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 2 IoCs

resource	yara_rule
behavioral1/files/0x000300000001e6dc-2.dat	family_stormser
behavioral1/files/0x000300000001e6de-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\{17F407BB-E4EA-4e1f-B6B8-95B9BD9FB9E7}	2026-08-10_b200e6b5fb524569012c7bf18b801417_elex_wannacry.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{17F407BB-E4EA-4e1f-B6B8-95B9BD9FB9E7}\stubpath = "C:\\Windows\\{17F407BB-E4EA-4e1f-B6B8-95B9BD9FB9E7}.exe"	2026-08-10_b200e6b5fb524569012c7bf18b801417_elex_wannacry.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{8F7600EB-C905-4fc2-A74E-319A13058E65}	{17F407BB-E4EA-4e1f-B6B8-95B9BD9FB9E7}.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{8F7600EB-C905-4fc2-A74E-319A13058E65}\stubpath = "C:\\Windows\\{8F7600EB-C905-4fc2-A74E-319A13058E65}.exe"	{17F407BB-E4EA-4e1f-B6B8-95B9BD9FB9E7}.exe

Executes dropped EXE 2 IoCs

pid	Process
3684	{17F407BB-E4EA-4e1f-B6B8-95B9BD9FB9E7}.exe
864	{8F7600EB-C905-4fc2-A74E-319A13058E65}.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\{8F7600EB-C905-4fc2-A74E-319A13058E65}.exe	{17F407BB-E4EA-4e1f-B6B8-95B9BD9FB9E7}.exe
File created	C:\Windows\{17F407BB-E4EA-4e1f-B6B8-95B9BD9FB9E7}.exe	2026-08-10_b200e6b5fb524569012c7bf18b801417_elex_wannacry.exe

Executes a command shell one-liner 1 TTPs 2 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
4316	cmd.exe
1388	cmd.exe

System Location Discovery: System Language Discovery 1 TTPs 5 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	2026-08-10_b200e6b5fb524569012c7bf18b801417_elex_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{17F407BB-E4EA-4e1f-B6B8-95B9BD9FB9E7}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{8F7600EB-C905-4fc2-A74E-319A13058E65}.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	3056	2026-08-10_b200e6b5fb524569012c7bf18b801417_elex_wannacry.exe
Token: SeIncBasePriorityPrivilege	3684	{17F407BB-E4EA-4e1f-B6B8-95B9BD9FB9E7}.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 3056 wrote to memory of 3684	3056	2026-08-10_b200e6b5fb524569012c7bf18b801417_elex_wannacry.exe	87
PID 3056 wrote to memory of 4316	3056	2026-08-10_b200e6b5fb524569012c7bf18b801417_elex_wannacry.exe	88
PID 3684 wrote to memory of 864	3684	{17F407BB-E4EA-4e1f-B6B8-95B9BD9FB9E7}.exe	89
PID 3684 wrote to memory of 1388	3684	{17F407BB-E4EA-4e1f-B6B8-95B9BD9FB9E7}.exe	90

C:\Users\Admin\AppData\Local\Temp\2026-08-10_b200e6b5fb524569012c7bf18b801417_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-08-10_b200e6b5fb524569012c7bf18b801417_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:3056
- C:\Windows\{17F407BB-E4EA-4e1f-B6B8-95B9BD9FB9E7}.exe
  C:\Windows\{17F407BB-E4EA-4e1f-B6B8-95B9BD9FB9E7}.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:3684
- - C:\Windows\{8F7600EB-C905-4fc2-A74E-319A13058E65}.exe
    C:\Windows\{8F7600EB-C905-4fc2-A74E-319A13058E65}.exe
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:864
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c del C:\Windows\{17F40~1.EXE > nul
    3⤵
    - Executes a command shell one-liner
    - System Location Discovery: System Language Discovery
    PID:1388
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c del C:\Users\Admin\AppData\Local\Temp\2026-0~1.EXE > nul
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  PID:4316

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

{17F407BB-E4EA-4e1f-B6B8-95B9BD9FB9E7}.exe

Path C:\Windows\{17F407BB-E4EA-4e1f-B6B8-95B9BD9FB9E7}.exe
Size 60KB
SHA256 252b91da060db5e3235afb0975058f9948d8a1b460e6bad728ffc622efe12ec8
MD5 d8c8092c5d98c4185a42d107b7fe7222
SHA1 2d568f7bb45c945e59e4b510262b9cfed1544181
SHA512 c25859d5841c4452c636ae2bafb998207f86d9007223e7f132ee2840b809395871256332538fc0b655264b65055f2ee2fcac677759a5eaf4f0f3af2058ea9303
SSDEEP 192:pbOzawOs81elJHsc45CcRZOgtShcWaOT2QLrCqwVY04/CFxyNhoy5t:pbLwOs8AHsc4sMfwhKQLron4/CFsrd
TLSH
T1C55309834BEE5CF2F791113108798AB9927B99C4950EBEDFBF90CD150037292E53A10B
MD5 SHA1 SHA512 SSDEEP TLSH

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{8F7600EB-C905-4fc2-A74E-319A13058E65}.exe

Path C:\Windows\{8F7600EB-C905-4fc2-A74E-319A13058E65}.exe
Size 60KB
SHA256 e9220b804838f4cdf15e20c9ab8d1e766f5ca8275cb90ef6442a8f70c9566953
MD5 2c6f9075af4030bc601bf65a8f7f04b6
SHA1 79db608c61701eb30d8b6ebba6bc926d3321b929
SHA512 80b4eaf970e4c00d4584b8e332d74ecdd482709ea0a726f33b10394ab66db215f5eb578f78b009e7586a7a992ad20a49832730f2e50b09cc4787ffd6611e7015
SSDEEP 192:pbOzawOs81elJHsc45CcRZOgtShcWaOT2QLrCqwUY04/CFxyNhoy5t:pbLwOs8AHsc4sMfwhKQLroi4/CFsrd
TLSH
T1425309834BEE5CF2F791117108798AB9927BA9C4950EBEDFBF90CD154037292E53A10B
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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