stormser | 5fafa63f0fc438363245a6e3bd736180f1f5b9ee0ed62d900be81f894c1b566e

General

Target
2026-10-03_fa0472f80181a353bc795fa0c885baee_elex_wannacry.exe
Size 59KB
Sample261003-2wtplazycv
SHA256 5fafa63f0fc438363245a6e3bd736180f1f5b9ee0ed62d900be81f894c1b566e
MD5 fa0472f80181a353bc795fa0c885baee
SHA1 23defb76e4463eaffa6a3014383d4ba7a0f6321f
SHA512 1a5571f916d70b01e84e43ce9130537939a96ec9588ca40e1b199ebc6e24fdbc3d254e27d393ef3cbf01b2e8a77c345244fd58e2bbd46a5a5d1c3544e4aa2742
SSDEEP 192:ebOzawOs81elJHsc45CcRZOgtShcWaOT2QLrCqwBY04/CFxyNhoy5t:ebLwOs8AHsc4sMfwhKQLroz4/CFsrd
TLSH
T1B243F7834BEE9CF2F791113108798AB9927B99D4950EBE9FBB90CD154037292E53A10B
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/0x00070000000243cf-2.dat	family_stormser
behavioral1/files/0x00080000000243be-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\{CA4D3FDC-86AE-45ee-9F35-D4768177A388}	2026-10-03_fa0472f80181a353bc795fa0c885baee_elex_wannacry.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{CA4D3FDC-86AE-45ee-9F35-D4768177A388}\stubpath = "C:\\Windows\\{CA4D3FDC-86AE-45ee-9F35-D4768177A388}.exe"	2026-10-03_fa0472f80181a353bc795fa0c885baee_elex_wannacry.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{FD933EB3-EEFC-41fb-801E-222512D25D91}	{CA4D3FDC-86AE-45ee-9F35-D4768177A388}.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{FD933EB3-EEFC-41fb-801E-222512D25D91}\stubpath = "C:\\Windows\\{FD933EB3-EEFC-41fb-801E-222512D25D91}.exe"	{CA4D3FDC-86AE-45ee-9F35-D4768177A388}.exe

Executes dropped EXE 2 IoCs

pid	Process
4572	{CA4D3FDC-86AE-45ee-9F35-D4768177A388}.exe
2756	{FD933EB3-EEFC-41fb-801E-222512D25D91}.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\{CA4D3FDC-86AE-45ee-9F35-D4768177A388}.exe	2026-10-03_fa0472f80181a353bc795fa0c885baee_elex_wannacry.exe
File created	C:\Windows\{FD933EB3-EEFC-41fb-801E-222512D25D91}.exe	{CA4D3FDC-86AE-45ee-9F35-D4768177A388}.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
1872	cmd.exe
2368	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	{FD933EB3-EEFC-41fb-801E-222512D25D91}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-10-03_fa0472f80181a353bc795fa0c885baee_elex_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{CA4D3FDC-86AE-45ee-9F35-D4768177A388}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	3680	2026-10-03_fa0472f80181a353bc795fa0c885baee_elex_wannacry.exe
Token: SeIncBasePriorityPrivilege	4572	{CA4D3FDC-86AE-45ee-9F35-D4768177A388}.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 3680 wrote to memory of 4572	3680	2026-10-03_fa0472f80181a353bc795fa0c885baee_elex_wannacry.exe	95
PID 3680 wrote to memory of 1872	3680	2026-10-03_fa0472f80181a353bc795fa0c885baee_elex_wannacry.exe	96
PID 4572 wrote to memory of 2756	4572	{CA4D3FDC-86AE-45ee-9F35-D4768177A388}.exe	97
PID 4572 wrote to memory of 2368	4572	{CA4D3FDC-86AE-45ee-9F35-D4768177A388}.exe	98

C:\Users\Admin\AppData\Local\Temp\2026-10-03_fa0472f80181a353bc795fa0c885baee_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-10-03_fa0472f80181a353bc795fa0c885baee_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:3680
- C:\Windows\{CA4D3FDC-86AE-45ee-9F35-D4768177A388}.exe
  C:\Windows\{CA4D3FDC-86AE-45ee-9F35-D4768177A388}.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:4572
- - C:\Windows\{FD933EB3-EEFC-41fb-801E-222512D25D91}.exe
    C:\Windows\{FD933EB3-EEFC-41fb-801E-222512D25D91}.exe
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:2756
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c del C:\Windows\{CA4D3~1.EXE > nul
    3⤵
    - Executes a command shell one-liner
    - System Location Discovery: System Language Discovery
    PID:2368
- 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:1872

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

Replay Monitor

Loading Replay Monitor...

Downloads

{CA4D3FDC-86AE-45ee-9F35-D4768177A388}.exe

Path C:\Windows\{CA4D3FDC-86AE-45ee-9F35-D4768177A388}.exe
Size 59KB
SHA256 fb21c47d5a6a19b4d10dbf5087b10d9872c2fa4bbbb69e9a3155a47e65fc0f1f
MD5 74a4a80b1c69a46002157ac715cc72eb
SHA1 11b4ed76dd9d7eddf0ce45d3a27e8e9d33362be3
SHA512 7de7fedc8603fef222e14a368730bed11ff7e28a7732f33476b354100f6a111a71b80c4c3ed34c6436cccdef8d162204cbf62ff2d8f8ac1b88ff09dcc118b00a
SSDEEP 192:ebOzawOs81elJHsc45CcRZOgtShcWaOT2QLrCqw0Y04/CFxyNhoy5t:ebLwOs8AHsc4sMfwhKQLroC4/CFsrd
TLSH
T10B43F7834BEE5CF2F691127108798AB9927B99C4950EBEDFBB90CD150037292E53A10B
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

{FD933EB3-EEFC-41fb-801E-222512D25D91}.exe

Path C:\Windows\{FD933EB3-EEFC-41fb-801E-222512D25D91}.exe
Size 59KB
SHA256 d46722d203e35fddbcee0418b16afba88d65f126d945ee94b1b44dd8127e1680
MD5 3d3cf9335a338195e0adb42c1ef79a14
SHA1 4edb1fef396d476b4c35fed75be2857edcbf0297
SHA512 5c238e2a9f6b89f2bab95e023523ecbe094dd3cf7bb8d7b80c811833d5b1daf943e059f5be08b4655f75d8e0b46aed0bb6d38d86180f571c7fb7861f14c2292e
SSDEEP 192:ebOzawOs81elJHsc45CcRZOgtShcWaOT2QLrCqwoY04/CFxyNhoy5t:ebLwOs8AHsc4sMfwhKQLro24/CFsrd
TLSH
T1784307834BEE9CF2F791117108798AB9927B99C4910EBEDFBF90CD150037292E53A10B
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

Replay Monitor

Loading Replay Monitor...

Downloads