stormser | 6df2138700373f0ffafcd2a4cb8aa683cd80bde230343b8f54bbed3e1fbccd38

General

Target
2026-10-22_af20f54310ccfa2664754970da22d15e_elex_wannacry.exe
Size 90KB
Sample261024-aszb5aws7l
SHA256 6df2138700373f0ffafcd2a4cb8aa683cd80bde230343b8f54bbed3e1fbccd38
MD5 af20f54310ccfa2664754970da22d15e
SHA1 5500ffe0582f8dc2b07eb77cbde33d3405579037
SHA512 80d3f82b9b7951f7f0b7a864282eb615ed19960355a833bfe902cff686db5de13f29604669aeb018c4c8c953e825754460a8ef839c6f6ff1ebc8a7eff483f344
SSDEEP 768:Qvw9816vhKQLroQ4/wQRNrfrunMxVFA3b7glw:YEGh0oQl2unMxVS3Hg
TLSH
T16993C53D5DDA103BE2B7D6B485F126E3FE66B9833A095D0E06D243428C23B53AD86C1D
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/0x000f000000024638-2.dat	family_stormser
behavioral1/files/0x0008000000024629-5.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\{6FDDA730-577E-4c54-90D1-F15329235392}	2026-10-22_af20f54310ccfa2664754970da22d15e_elex_wannacry.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{6FDDA730-577E-4c54-90D1-F15329235392}\stubpath = "C:\\Windows\\{6FDDA730-577E-4c54-90D1-F15329235392}.exe"	2026-10-22_af20f54310ccfa2664754970da22d15e_elex_wannacry.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{FC8FB455-CD17-4e80-AD2A-16952F5307A0}	{6FDDA730-577E-4c54-90D1-F15329235392}.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{FC8FB455-CD17-4e80-AD2A-16952F5307A0}\stubpath = "C:\\Windows\\{FC8FB455-CD17-4e80-AD2A-16952F5307A0}.exe"	{6FDDA730-577E-4c54-90D1-F15329235392}.exe

Executes dropped EXE 2 IoCs

pid	Process
5088	{6FDDA730-577E-4c54-90D1-F15329235392}.exe
1196	{FC8FB455-CD17-4e80-AD2A-16952F5307A0}.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\{6FDDA730-577E-4c54-90D1-F15329235392}.exe	2026-10-22_af20f54310ccfa2664754970da22d15e_elex_wannacry.exe
File created	C:\Windows\{FC8FB455-CD17-4e80-AD2A-16952F5307A0}.exe	{6FDDA730-577E-4c54-90D1-F15329235392}.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
5428	cmd.exe
4524	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	2026-10-22_af20f54310ccfa2664754970da22d15e_elex_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{6FDDA730-577E-4c54-90D1-F15329235392}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{FC8FB455-CD17-4e80-AD2A-16952F5307A0}.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	4608	2026-10-22_af20f54310ccfa2664754970da22d15e_elex_wannacry.exe
Token: SeIncBasePriorityPrivilege	5088	{6FDDA730-577E-4c54-90D1-F15329235392}.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 4608 wrote to memory of 5088	4608	2026-10-22_af20f54310ccfa2664754970da22d15e_elex_wannacry.exe	93
PID 4608 wrote to memory of 5428	4608	2026-10-22_af20f54310ccfa2664754970da22d15e_elex_wannacry.exe	94
PID 5088 wrote to memory of 1196	5088	{6FDDA730-577E-4c54-90D1-F15329235392}.exe	95
PID 5088 wrote to memory of 4524	5088	{6FDDA730-577E-4c54-90D1-F15329235392}.exe	96

C:\Users\Admin\AppData\Local\Temp\2026-10-22_af20f54310ccfa2664754970da22d15e_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-10-22_af20f54310ccfa2664754970da22d15e_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:4608
- C:\Windows\{6FDDA730-577E-4c54-90D1-F15329235392}.exe
  C:\Windows\{6FDDA730-577E-4c54-90D1-F15329235392}.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:5088
- - C:\Windows\{FC8FB455-CD17-4e80-AD2A-16952F5307A0}.exe
    C:\Windows\{FC8FB455-CD17-4e80-AD2A-16952F5307A0}.exe
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:1196
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c del C:\Windows\{6FDDA~1.EXE > nul
    3⤵
    - Executes a command shell one-liner
    - System Location Discovery: System Language Discovery
    PID:4524
- 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:5428

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

{6FDDA730-577E-4c54-90D1-F15329235392}.exe

Path C:\Windows\{6FDDA730-577E-4c54-90D1-F15329235392}.exe
Size 90KB
SHA256 00651407869ff4e87d86b78b673c0707224a3d2f24eb3f35cbba86e90cdc121a
MD5 23fa84cfc250b6c65ca70fb537bc9a89
SHA1 5972c8b08055fcd59d25e05a86d06642e321389b
SHA512 2b9f69b694a7d84c88cb8fe72a7a697ad6c525ad41cb741e8ad85ccb38d681cbf66a223a1988186d24dc0f23eddfb584abbc438682fbb4d5a238e73bd4713b6e
SSDEEP 768:Qvw9816vhKQLrop4/wQRNrfrunMxVFA3b7glw:YEGh0opl2unMxVS3Hg
TLSH
T14F93C53D5DDA103BE2B7D6B485F126E3FE66B98336095D0E46D243428C23B53AD8AC1D
MD5 SHA1 SHA512 SSDEEP TLSH

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{FC8FB455-CD17-4e80-AD2A-16952F5307A0}.exe

Path C:\Windows\{FC8FB455-CD17-4e80-AD2A-16952F5307A0}.exe
Size 90KB
SHA256 4000bcad77c78b6e1e301641ed34db078351e0ec9f786c6f3198ef00c20e5938
MD5 45d0a829dabae43f26e11c8db24f88d5
SHA1 5c7eeacc46b7de44dde389effbe22dbf241df2ee
SHA512 d2eecfbaee233c4ed1aa730cc4642d4a3e6f1af91888f9caeff1d70cf3595380d2783c15b995643b0be300edbca1e8301c68ef79165145265eebf62cd1d60e4c
SSDEEP 768:Qvw9816vhKQLro04/wQRNrfrunMxVFA3b7glw:YEGh0o0l2unMxVS3Hg
TLSH
T14893C53D5DDA103BE2B7D6B585F126E3FE66B98339095D0E06D243428C23B53AD8AC1D
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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