stormser | 084e15b16e0363191048be2469822fb15a74c7ee3c28f528057872f25074792d

General

Target
2026-10-22_0aa6b396bc3f17a058c48d89284263d2_elex_wannacry.exe
Size 79KB
Sample261024-141mfacx2s
SHA256 084e15b16e0363191048be2469822fb15a74c7ee3c28f528057872f25074792d
MD5 0aa6b396bc3f17a058c48d89284263d2
SHA1 a4f9e1bda241798ec389fa074857ddf4275899dc
SHA512 38f01d1ab459770f08b7bd95074a7a7bb52b76fe8d8e15b4516bff4eca714a2b6aea8863d28ff23e97ab5035936e0c1ee93a3a165b1df224615148040bc81122
SSDEEP 768:4vw9816vhKQLroS4/wQzXOQ69zbjlAAX5e9zz:wEGh0oSlGizbR9Xwzz
TLSH
T1E9835CD38EAC4483FDE6697012B8D9A77C3E97C61604B99B6B91FD5408A33C1EB3411E
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 3 IoCs

resource	yara_rule
behavioral1/files/0x000f000000024639-2.dat	family_stormser
behavioral1/files/0x000800000002462a-5.dat	family_stormser
behavioral1/files/0x0008000000024641-10.dat	family_stormser

Boot or Logon Autostart Execution: Active Setup 2 TTPs 6 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
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{53F7BF79-0094-4753-A018-C1797ED9F746}\stubpath = "C:\\Windows\\{53F7BF79-0094-4753-A018-C1797ED9F746}.exe"	2026-10-22_0aa6b396bc3f17a058c48d89284263d2_elex_wannacry.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{54BEC973-103C-48ad-9D8F-309FDEACF732}	{53F7BF79-0094-4753-A018-C1797ED9F746}.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{54BEC973-103C-48ad-9D8F-309FDEACF732}\stubpath = "C:\\Windows\\{54BEC973-103C-48ad-9D8F-309FDEACF732}.exe"	{53F7BF79-0094-4753-A018-C1797ED9F746}.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{B6B53530-A263-4861-B0B9-8F226ED2D8D4}	{54BEC973-103C-48ad-9D8F-309FDEACF732}.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{B6B53530-A263-4861-B0B9-8F226ED2D8D4}\stubpath = "C:\\Windows\\{B6B53530-A263-4861-B0B9-8F226ED2D8D4}.exe"	{54BEC973-103C-48ad-9D8F-309FDEACF732}.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{53F7BF79-0094-4753-A018-C1797ED9F746}	2026-10-22_0aa6b396bc3f17a058c48d89284263d2_elex_wannacry.exe

Executes dropped EXE 3 IoCs

pid	Process
5660	{53F7BF79-0094-4753-A018-C1797ED9F746}.exe
4664	{54BEC973-103C-48ad-9D8F-309FDEACF732}.exe
5868	{B6B53530-A263-4861-B0B9-8F226ED2D8D4}.exe

Drops file in Windows directory 3 IoCs

description	ioc	Process
File created	C:\Windows\{B6B53530-A263-4861-B0B9-8F226ED2D8D4}.exe	{54BEC973-103C-48ad-9D8F-309FDEACF732}.exe
File created	C:\Windows\{53F7BF79-0094-4753-A018-C1797ED9F746}.exe	2026-10-22_0aa6b396bc3f17a058c48d89284263d2_elex_wannacry.exe
File created	C:\Windows\{54BEC973-103C-48ad-9D8F-309FDEACF732}.exe	{53F7BF79-0094-4753-A018-C1797ED9F746}.exe

Executes a command shell one-liner 1 TTPs 3 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
5816	cmd.exe
3020	cmd.exe
5692	cmd.exe

System Location Discovery: System Language Discovery 1 TTPs 7 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	{53F7BF79-0094-4753-A018-C1797ED9F746}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{54BEC973-103C-48ad-9D8F-309FDEACF732}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{B6B53530-A263-4861-B0B9-8F226ED2D8D4}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-10-22_0aa6b396bc3f17a058c48d89284263d2_elex_wannacry.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	4940	2026-10-22_0aa6b396bc3f17a058c48d89284263d2_elex_wannacry.exe
Token: SeIncBasePriorityPrivilege	5660	{53F7BF79-0094-4753-A018-C1797ED9F746}.exe
Token: SeIncBasePriorityPrivilege	4664	{54BEC973-103C-48ad-9D8F-309FDEACF732}.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4940 wrote to memory of 5660	4940	2026-10-22_0aa6b396bc3f17a058c48d89284263d2_elex_wannacry.exe	94
PID 4940 wrote to memory of 5816	4940	2026-10-22_0aa6b396bc3f17a058c48d89284263d2_elex_wannacry.exe	95
PID 5660 wrote to memory of 4664	5660	{53F7BF79-0094-4753-A018-C1797ED9F746}.exe	96
PID 5660 wrote to memory of 3020	5660	{53F7BF79-0094-4753-A018-C1797ED9F746}.exe	97
PID 4664 wrote to memory of 5868	4664	{54BEC973-103C-48ad-9D8F-309FDEACF732}.exe	101
PID 4664 wrote to memory of 5692	4664	{54BEC973-103C-48ad-9D8F-309FDEACF732}.exe	102

C:\Users\Admin\AppData\Local\Temp\2026-10-22_0aa6b396bc3f17a058c48d89284263d2_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-10-22_0aa6b396bc3f17a058c48d89284263d2_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:4940
- C:\Windows\{53F7BF79-0094-4753-A018-C1797ED9F746}.exe
  C:\Windows\{53F7BF79-0094-4753-A018-C1797ED9F746}.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:5660
- - C:\Windows\{54BEC973-103C-48ad-9D8F-309FDEACF732}.exe
    C:\Windows\{54BEC973-103C-48ad-9D8F-309FDEACF732}.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:4664
  - - C:\Windows\{B6B53530-A263-4861-B0B9-8F226ED2D8D4}.exe
      C:\Windows\{B6B53530-A263-4861-B0B9-8F226ED2D8D4}.exe
      4⤵
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      PID:5868
  - - C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c del C:\Windows\{54BEC~1.EXE > nul
      4⤵
      Executes a command shell one-liner
      System Location Discovery: System Language Discovery
      PID:5692
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c del C:\Windows\{53F7B~1.EXE > nul
    3⤵
    - Executes a command shell one-liner
    - System Location Discovery: System Language Discovery
    PID:3020
- 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:5816

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

{53F7BF79-0094-4753-A018-C1797ED9F746}.exe

Path C:\Windows\{53F7BF79-0094-4753-A018-C1797ED9F746}.exe
Size 79KB
SHA256 238f5bd2f816f9d01164782edd02615ba2f939ba24d63987b9d895e64c610d73
MD5 eee0754dd74975c7c68b15d342ae2c88
SHA1 1965141040dedf4760d5f135647a0d715dc1ca4d
SHA512 609073580bad38112b33c0967379d505c61d3aef5b073821c3620971823779d2efe397f6a8f863247ee39ad9a6841d2850b78b4a1797351374dff2c8933ca96b
SSDEEP 768:4vw9816vhKQLro34/wQzXOQ69zbjlAAX5e9zz:wEGh0o3lGizbR9Xwzz
TLSH
T1F6834CD38EAC4483FDD6697012B8D9A77C3E97C61504B99B6B91FD5408A33C1EB3411E
MD5 SHA1 SHA512 SSDEEP TLSH

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{54BEC973-103C-48ad-9D8F-309FDEACF732}.exe

Path C:\Windows\{54BEC973-103C-48ad-9D8F-309FDEACF732}.exe
Size 79KB
SHA256 c1171655b9463c1af8da404d5aa823586684c4a31ad40921fbb8d8150ee923a3
MD5 0d4d23a3e8d003c332086280fb3f5af6
SHA1 bf1f703db982b160d2d4759a3387bb74b90eba59
SHA512 aa1a5dd232c549bfefd44480a7e040e179041beb4a7ce3f3ac206de461e1be2b38d56b4bddcf43cc61579e3b7fb77b34a63b6fccb862ec714faf1ca39a498541
SSDEEP 768:4vw9816vhKQLroI4/wQzXOQ69zbjlAAX5e9zz:wEGh0oIlGizbR9Xwzz
TLSH
T19B835CD38EAC4483FDD6697012B8D9A77C3E97C61604B99B6B91FD5408A33C1EB3411E
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

{B6B53530-A263-4861-B0B9-8F226ED2D8D4}.exe

Path C:\Windows\{B6B53530-A263-4861-B0B9-8F226ED2D8D4}.exe
Size 79KB
SHA256 faa82b599893f3bc79b4168dbacafa736264973fa9d01f771a502231c6ba8664
MD5 a0bc37f98ca744e60fb45604f161f4c2
SHA1 dfe8d6c0886b3d32ea0d825f3b2576bf7701a0e9
SHA512 07b9a76ca565e6df742243a4c0c1f7bf98c6367a148d5edc29c04e82943ed2c08639d9272bc4c19e442fb404c29769afe7d73d161f7609b678c0ed996eacec7c
SSDEEP 768:4vw9816vhKQLroc3C4/wQzXOQ69zbjlAAX5e9zz:wEGh0oc3ClGizbR9Xwzz
TLSH
T17E835CD38EAC4483FDE6697012B8D9A77C3E97C61604B99B6B91FD5408A33C1EB3411E
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