stormser | 0c75a70d841019c03a68679141c80b4876f8367704612ebc921217174044a95f

General

Target
2026-07-27_498073a32be4435327b44b490c269e26_elex_wannacry.exe
Size 64KB
Sample260727-a6w4xstdqc
SHA256 0c75a70d841019c03a68679141c80b4876f8367704612ebc921217174044a95f
MD5 498073a32be4435327b44b490c269e26
SHA1 a9a895a29cedd65c02e58a2a2810100c31a9d9b2
SHA512 4c5fcce3ecafaff5a43f0e5599d53ff1f1ea28003f86c2666f3acc28bc0e71f615106ef8dae8b9851530596c092680d5ff70fcd86123285e1c81c9f3a82d0e89
SSDEEP 384:vbLwOs8AHsc4sMfwhKQLrom4/CFsrdn0A9lsy4:vvw9816vhKQLrom4/wQH9lsl
TLSH
T1DC535C834BEE98F2F7D21131046D8AB98277ADC4961EBEAF7F50CE55007B191D83A14B
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/0x000300000001e697-2.dat	family_stormser
behavioral1/files/0x000f0000000242cb-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
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{58365AB1-7B85-4916-B89F-E835F77B7A30}\stubpath = "C:\\Windows\\{58365AB1-7B85-4916-B89F-E835F77B7A30}.exe"	{75317FC8-F25F-4f17-A89B-77B04FA7E381}.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{75317FC8-F25F-4f17-A89B-77B04FA7E381}	2026-07-27_498073a32be4435327b44b490c269e26_elex_wannacry.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{75317FC8-F25F-4f17-A89B-77B04FA7E381}\stubpath = "C:\\Windows\\{75317FC8-F25F-4f17-A89B-77B04FA7E381}.exe"	2026-07-27_498073a32be4435327b44b490c269e26_elex_wannacry.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{58365AB1-7B85-4916-B89F-E835F77B7A30}	{75317FC8-F25F-4f17-A89B-77B04FA7E381}.exe

Executes dropped EXE 2 IoCs

pid	Process
4688	{75317FC8-F25F-4f17-A89B-77B04FA7E381}.exe
212	{58365AB1-7B85-4916-B89F-E835F77B7A30}.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\{58365AB1-7B85-4916-B89F-E835F77B7A30}.exe	{75317FC8-F25F-4f17-A89B-77B04FA7E381}.exe
File created	C:\Windows\{75317FC8-F25F-4f17-A89B-77B04FA7E381}.exe	2026-07-27_498073a32be4435327b44b490c269e26_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
2628	cmd.exe
228	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	{58365AB1-7B85-4916-B89F-E835F77B7A30}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-07-27_498073a32be4435327b44b490c269e26_elex_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{75317FC8-F25F-4f17-A89B-77B04FA7E381}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	2320	2026-07-27_498073a32be4435327b44b490c269e26_elex_wannacry.exe
Token: SeIncBasePriorityPrivilege	4688	{75317FC8-F25F-4f17-A89B-77B04FA7E381}.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2320 wrote to memory of 4688	2320	2026-07-27_498073a32be4435327b44b490c269e26_elex_wannacry.exe	90
PID 2320 wrote to memory of 2628	2320	2026-07-27_498073a32be4435327b44b490c269e26_elex_wannacry.exe	91
PID 4688 wrote to memory of 212	4688	{75317FC8-F25F-4f17-A89B-77B04FA7E381}.exe	98
PID 4688 wrote to memory of 228	4688	{75317FC8-F25F-4f17-A89B-77B04FA7E381}.exe	99

C:\Users\Admin\AppData\Local\Temp\2026-07-27_498073a32be4435327b44b490c269e26_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-07-27_498073a32be4435327b44b490c269e26_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:2320
- C:\Windows\{75317FC8-F25F-4f17-A89B-77B04FA7E381}.exe
  C:\Windows\{75317FC8-F25F-4f17-A89B-77B04FA7E381}.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:4688
- - C:\Windows\{58365AB1-7B85-4916-B89F-E835F77B7A30}.exe
    C:\Windows\{58365AB1-7B85-4916-B89F-E835F77B7A30}.exe
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:212
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c del C:\Windows\{75317~1.EXE > nul
    3⤵
    - Executes a command shell one-liner
    - System Location Discovery: System Language Discovery
    PID:228
- 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:2628

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

{58365AB1-7B85-4916-B89F-E835F77B7A30}.exe

Path C:\Windows\{58365AB1-7B85-4916-B89F-E835F77B7A30}.exe
Size 64KB
SHA256 07140f117375d396b592ee8944298a0db446c5484f851fdd73cd05cacc39c6ba
MD5 aefefc17d1b0015b4928640899bd033f
SHA1 731441bc773aec7d705240e08fe3efe3bd6d90f9
SHA512 dfa548547ec6aabc3563774472af167bb3ba432d1c1a178fe65ff5da40befeb6cde60cbd43ebe6323bf094f5f4cfb1702b989cf426ea453e9c0a1e43bf0bd99a
SSDEEP 384:vbLwOs8AHsc4sMfwhKQLro84/CFsrdn0A9lsy4:vvw9816vhKQLro84/wQH9lsl
TLSH
T185535C834BEE98F2F7D20131046D8AB98277ADC4961EBEAF7F50CE54007B191D83A14B
MD5 SHA1 SHA512 SSDEEP TLSH

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{75317FC8-F25F-4f17-A89B-77B04FA7E381}.exe

Path C:\Windows\{75317FC8-F25F-4f17-A89B-77B04FA7E381}.exe
Size 64KB
SHA256 0e1de1ca6fa6a15b5162b7e80cab400799b707798a3ff63c474362f4d8ec3b17
MD5 0dbebdc7b19fe58418eeb175cac59a97
SHA1 4204bad907b2a6b3c871fee620dc7b8778a5ddc2
SHA512 016cf2eea3dd15eab79c5c0eaceec2ffbdad45b7f1700b31fe4c0a248fcdc15989afe935224045ad01549ec0619bd3f4a400885a3e1fdc0a8544890419f93977
SSDEEP 384:vbLwOs8AHsc4sMfwhKQLroo4/CFsrdn0A9lsy4:vvw9816vhKQLroo4/wQH9lsl
TLSH
T18C535C834BEE98F2F7D21131046D8A799277ADC4961EBE9F7F50CE54007B191D83A147
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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