stormser | 1cad0fb5108a01830d69ada105f72d3087c88b4975cfd93d9d6977fdde0f90af

General

Target
2026-07-29_9fafe322a27bc6413f7d100f65cf76ba_elex_wannacry.exe
Size 60KB
Sample260729-sybgcsap21
SHA256 1cad0fb5108a01830d69ada105f72d3087c88b4975cfd93d9d6977fdde0f90af
MD5 9fafe322a27bc6413f7d100f65cf76ba
SHA1 a4db8dfa6e8f6a5f830ba0955c9a4e91a519f020
SHA512 cb1fb2433fb1fcc1d992d850b0c110b42aafe40c4eef8aca19564f689f800cfb97e40c7b79d70e261f2b5f0c02a13e573471da48742eaaafd29e5ca2a949471a
SSDEEP 192:XbOzawOs81elJHsc45CcRZOgtShcWaOT2QLrCqwptY04/CFxyNhoy5t:XbLwOs8AHsc4sMfwhKQLroV4/CFsrd
TLSH
T1AE5309834BDE9CF2F791123108794AB9927B9AC4910EBE9FBF90CD140037292E53E10B
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 5 IoCs

resource	yara_rule
behavioral1/files/0x000f0000000243fb-2.dat	family_stormser
behavioral1/files/0x0015000000024349-6.dat	family_stormser
behavioral1/files/0x0007000000024401-8.dat	family_stormser
behavioral1/files/0x0007000000024405-14.dat	family_stormser
behavioral1/files/0x00020000000220ec-18.dat	family_stormser

Boot or Logon Autostart Execution: Active Setup 2 TTPs 10 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\{C30AF6CF-2490-404b-9507-F1A6108C3FB2}\stubpath = "C:\\Windows\\{C30AF6CF-2490-404b-9507-F1A6108C3FB2}.exe"	{0B558AA7-5150-4636-9E37-A6CBE3B53073}.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{761C9B87-34CC-423a-B647-554646CA6AE8}	{53517586-5242-4151-9956-70BBC871AF6A}.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{761C9B87-34CC-423a-B647-554646CA6AE8}\stubpath = "C:\\Windows\\{761C9B87-34CC-423a-B647-554646CA6AE8}.exe"	{53517586-5242-4151-9956-70BBC871AF6A}.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{D23F69EF-4CBD-49bc-AC03-52632919A4ED}	2026-07-29_9fafe322a27bc6413f7d100f65cf76ba_elex_wannacry.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{D23F69EF-4CBD-49bc-AC03-52632919A4ED}\stubpath = "C:\\Windows\\{D23F69EF-4CBD-49bc-AC03-52632919A4ED}.exe"	2026-07-29_9fafe322a27bc6413f7d100f65cf76ba_elex_wannacry.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{0B558AA7-5150-4636-9E37-A6CBE3B53073}	{D23F69EF-4CBD-49bc-AC03-52632919A4ED}.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{C30AF6CF-2490-404b-9507-F1A6108C3FB2}	{0B558AA7-5150-4636-9E37-A6CBE3B53073}.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{53517586-5242-4151-9956-70BBC871AF6A}	{C30AF6CF-2490-404b-9507-F1A6108C3FB2}.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{53517586-5242-4151-9956-70BBC871AF6A}\stubpath = "C:\\Windows\\{53517586-5242-4151-9956-70BBC871AF6A}.exe"	{C30AF6CF-2490-404b-9507-F1A6108C3FB2}.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{0B558AA7-5150-4636-9E37-A6CBE3B53073}\stubpath = "C:\\Windows\\{0B558AA7-5150-4636-9E37-A6CBE3B53073}.exe"	{D23F69EF-4CBD-49bc-AC03-52632919A4ED}.exe

Executes dropped EXE 5 IoCs

pid	Process
3836	{D23F69EF-4CBD-49bc-AC03-52632919A4ED}.exe
4276	{0B558AA7-5150-4636-9E37-A6CBE3B53073}.exe
60	{C30AF6CF-2490-404b-9507-F1A6108C3FB2}.exe
932	{53517586-5242-4151-9956-70BBC871AF6A}.exe
1580	{761C9B87-34CC-423a-B647-554646CA6AE8}.exe

Drops file in Windows directory 5 IoCs

description	ioc	Process
File created	C:\Windows\{761C9B87-34CC-423a-B647-554646CA6AE8}.exe	{53517586-5242-4151-9956-70BBC871AF6A}.exe
File created	C:\Windows\{D23F69EF-4CBD-49bc-AC03-52632919A4ED}.exe	2026-07-29_9fafe322a27bc6413f7d100f65cf76ba_elex_wannacry.exe
File created	C:\Windows\{0B558AA7-5150-4636-9E37-A6CBE3B53073}.exe	{D23F69EF-4CBD-49bc-AC03-52632919A4ED}.exe
File created	C:\Windows\{C30AF6CF-2490-404b-9507-F1A6108C3FB2}.exe	{0B558AA7-5150-4636-9E37-A6CBE3B53073}.exe
File created	C:\Windows\{53517586-5242-4151-9956-70BBC871AF6A}.exe	{C30AF6CF-2490-404b-9507-F1A6108C3FB2}.exe

Executes a command shell one-liner 1 TTPs 5 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
464	cmd.exe
4668	cmd.exe
1892	cmd.exe
2944	cmd.exe
220	cmd.exe

System Location Discovery: System Language Discovery 1 TTPs 11 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	{0B558AA7-5150-4636-9E37-A6CBE3B53073}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{C30AF6CF-2490-404b-9507-F1A6108C3FB2}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{761C9B87-34CC-423a-B647-554646CA6AE8}.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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{53517586-5242-4151-9956-70BBC871AF6A}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-07-29_9fafe322a27bc6413f7d100f65cf76ba_elex_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{D23F69EF-4CBD-49bc-AC03-52632919A4ED}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	4452	2026-07-29_9fafe322a27bc6413f7d100f65cf76ba_elex_wannacry.exe
Token: SeIncBasePriorityPrivilege	3836	{D23F69EF-4CBD-49bc-AC03-52632919A4ED}.exe
Token: SeIncBasePriorityPrivilege	4276	{0B558AA7-5150-4636-9E37-A6CBE3B53073}.exe
Token: SeIncBasePriorityPrivilege	60	{C30AF6CF-2490-404b-9507-F1A6108C3FB2}.exe
Token: SeIncBasePriorityPrivilege	932	{53517586-5242-4151-9956-70BBC871AF6A}.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 4452 wrote to memory of 3836	4452	2026-07-29_9fafe322a27bc6413f7d100f65cf76ba_elex_wannacry.exe	95
PID 4452 wrote to memory of 2944	4452	2026-07-29_9fafe322a27bc6413f7d100f65cf76ba_elex_wannacry.exe	96
PID 3836 wrote to memory of 4276	3836	{D23F69EF-4CBD-49bc-AC03-52632919A4ED}.exe	97
PID 3836 wrote to memory of 220	3836	{D23F69EF-4CBD-49bc-AC03-52632919A4ED}.exe	98
PID 4276 wrote to memory of 60	4276	{0B558AA7-5150-4636-9E37-A6CBE3B53073}.exe	101
PID 4276 wrote to memory of 464	4276	{0B558AA7-5150-4636-9E37-A6CBE3B53073}.exe	102
PID 60 wrote to memory of 932	60	{C30AF6CF-2490-404b-9507-F1A6108C3FB2}.exe	103
PID 60 wrote to memory of 4668	60	{C30AF6CF-2490-404b-9507-F1A6108C3FB2}.exe	104
PID 932 wrote to memory of 1580	932	{53517586-5242-4151-9956-70BBC871AF6A}.exe	105
PID 932 wrote to memory of 1892	932	{53517586-5242-4151-9956-70BBC871AF6A}.exe	106

C:\Users\Admin\AppData\Local\Temp\2026-07-29_9fafe322a27bc6413f7d100f65cf76ba_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-07-29_9fafe322a27bc6413f7d100f65cf76ba_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:4452
- C:\Windows\{D23F69EF-4CBD-49bc-AC03-52632919A4ED}.exe
  C:\Windows\{D23F69EF-4CBD-49bc-AC03-52632919A4ED}.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:3836
- - C:\Windows\{0B558AA7-5150-4636-9E37-A6CBE3B53073}.exe
    C:\Windows\{0B558AA7-5150-4636-9E37-A6CBE3B53073}.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:4276
  - - C:\Windows\{C30AF6CF-2490-404b-9507-F1A6108C3FB2}.exe
      C:\Windows\{C30AF6CF-2490-404b-9507-F1A6108C3FB2}.exe
      4⤵
      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:60
    - - C:\Windows\{53517586-5242-4151-9956-70BBC871AF6A}.exe
        
        C:\Windows\{53517586-5242-4151-9956-70BBC871AF6A}.exe
        5⤵
        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:932
      - C:\Windows\{761C9B87-34CC-423a-B647-554646CA6AE8}.exe
        
        C:\Windows\{761C9B87-34CC-423a-B647-554646CA6AE8}.exe
        6⤵
        Executes dropped EXE
        System Location Discovery: System Language Discovery
        
        PID:1580
      - C:\Windows\SysWOW64\cmd.exe
        
        C:\Windows\system32\cmd.exe /c del C:\Windows\{53517~1.EXE > nul
        6⤵
        Executes a command shell one-liner
        System Location Discovery: System Language Discovery
        
        PID:1892
    - - C:\Windows\SysWOW64\cmd.exe
        
        C:\Windows\system32\cmd.exe /c del C:\Windows\{C30AF~1.EXE > nul
        5⤵
        Executes a command shell one-liner
        System Location Discovery: System Language Discovery
        
        PID:4668
  - - C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c del C:\Windows\{0B558~1.EXE > nul
      4⤵
      Executes a command shell one-liner
      System Location Discovery: System Language Discovery
      PID:464
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c del C:\Windows\{D23F6~1.EXE > nul
    3⤵
    - Executes a command shell one-liner
    - System Location Discovery: System Language Discovery
    PID:220
- 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:2944

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

{0B558AA7-5150-4636-9E37-A6CBE3B53073}.exe

Path C:\Windows\{0B558AA7-5150-4636-9E37-A6CBE3B53073}.exe
Size 60KB
SHA256 4e4b9cee7e1c20a1292b8c7b99684c5fd5f1b8c53cf7f6422a8b65d536176b7b
MD5 151ccea67be800b51d85ae46784dbf79
SHA1 d528a3061fbf45a9246af1f82f5e0f894256bf7a
SHA512 2146b51bead06d9a8e7db645456c0f68201d77257a0e132ba8ecfc20fecc96e8fe91272c7bd08724e098466b56bed839450c57ef07338a7f6d37b8e3646e9f27
SSDEEP 192:XbOzawOs81elJHsc45CcRZOgtShcWaOT2QLrCqwlY04/CFxyNhoy5t:XbLwOs8AHsc4sMfwhKQLroX4/CFsrd
TLSH
T17A5309834BDE9CF2F791127108794AB9927B9AC4910EBE9FBF90CD140037692E53E14B
MD5 SHA1 SHA512 SSDEEP TLSH

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{53517586-5242-4151-9956-70BBC871AF6A}.exe

Path C:\Windows\{53517586-5242-4151-9956-70BBC871AF6A}.exe
Size 60KB
SHA256 d31210571e246b11f34247a94ee409fb2fe1df134f6e22d143cb83506ec86e4a
MD5 de661bcfd25418fd680b6a65757faa10
SHA1 799349c92307ddb9c6b01291c073bd49f710ef8a
SHA512 dd2a2bcd4f745c00afe93d78d920406881d8737bc0da85763e65e2d49859c2159066c61039cce9e1ea6ee79369df871a230ff022e66e19cffb65349948920f67
SSDEEP 192:XbOzawOs81elJHsc45CcRZOgtShcWaOT2QLrCqwNY04/CFxyNhoy5t:XbLwOs8AHsc4sMfwhKQLrof4/CFsrd
TLSH
T1FB5309834BDE5CF2F791127108798AB9927B9AC4910EBE9FBF90CD540037692E53E10B
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

{761C9B87-34CC-423a-B647-554646CA6AE8}.exe

Path C:\Windows\{761C9B87-34CC-423a-B647-554646CA6AE8}.exe
Size 60KB
SHA256 ac88c7f0d9a6fb58d291f04021805e0547a1f6d7bae726bfae91fe0bf1153f09
MD5 7af11d679689007c7b883b7d552127be
SHA1 8d4894f3f142d080bdc1f7b384a54d3b1265a32d
SHA512 5209d2064c5b51a05c5db732c6698471e75f6fc1c6a87d94abd502eceb068097e4918c24344cbf810b0c4f982f43ebda0f41599dc589ac322d30a1abc2e95616
SSDEEP 192:XbOzawOs81elJHsc45CcRZOgtShcWaOT2QLrCqwEODfY04/CFxyNhoy5t:XbLwOs8AHsc4sMfwhKQLroEq4/CFsrd
TLSH
T1B25309834BDE9CF2F791123108795AB9927B9AD4910EBE9FBF90CD540037292E53E10B
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

{C30AF6CF-2490-404b-9507-F1A6108C3FB2}.exe

Path C:\Windows\{C30AF6CF-2490-404b-9507-F1A6108C3FB2}.exe
Size 60KB
SHA256 a065301c59e00e1609e44d3af45877272ca0efdaba2301f1661c9d9f1d41035e
MD5 7c6dcb982dd0bcc0dd743a890e963c89
SHA1 df7c16964f31c053ecf3b6724e1c865a15f33bb8
SHA512 8e85a3dd50d7786ce92bb46f8bb17d40ba1680037476f9d1dfb29951bdc24fd123b152fcda297533a740c0e4c136e1627bac51a4dece1cdecdacc94bf2f2571f
SSDEEP 192:XbOzawOs81elJHsc45CcRZOgtShcWaOT2QLrCqwHY04/CFxyNhoy5t:XbLwOs8AHsc4sMfwhKQLro54/CFsrd
TLSH
T1355309834BDE9CF2F791123118794AB9927B9AC4910EBE9FBF90CD550037692E53E10B
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

{D23F69EF-4CBD-49bc-AC03-52632919A4ED}.exe

Path C:\Windows\{D23F69EF-4CBD-49bc-AC03-52632919A4ED}.exe
Size 60KB
SHA256 e3f80c2ea18162508954cfc1ed9f27330100d35480d0120911878efbe8deab89
MD5 3955c20c26451a052c80bba4d94ea249
SHA1 f81e46c409786e29d56371d687ed51870c3cd7bc
SHA512 90ffa7cbf28efc961f4b4a5b2e142b1107b80f77f5b5794a188843baab5d1ee50cf4364c1ae7a2212176d46ae8950a1ba5509df422aa9a3cb2fb6153e5c496be
SSDEEP 192:XbOzawOs81elJHsc45CcRZOgtShcWaOT2QLrCqwAY04/CFxyNhoy5t:XbLwOs8AHsc4sMfwhKQLroO4/CFsrd
TLSH
T1A25309834BDE9CF2F791123108794AB9927B9AC4910EBE9FBF90CD154037692E53E10B
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