stormser | 4cd8c2b7146be626be0e113c5efb823eb0e325f6c175f165aeb5335849680252

General

Target
2026-10-26_b73e0e79e00d63abe27640f4ebe73877_elex_wannacry.exe
Size 90KB
Sample261027-kfdvrscw7k
SHA256 4cd8c2b7146be626be0e113c5efb823eb0e325f6c175f165aeb5335849680252
MD5 b73e0e79e00d63abe27640f4ebe73877
SHA1 0e94f6a4f814efd18c0b1751ed90241f5939934a
SHA512 8792fc7f9edcec50c0e87945d68b4061a12ea0512db782153c0f8773d8aca0bada979b1bedbd5bf28b231bc1e5ca386f04ffddbd8f2d37a843e84361b7e2bd14
SSDEEP 768:Qvw9816vhKQLrof4/wQRNrfrunMxVFA3b7glws:YEGh0ofl2unMxVS3Hgz
TLSH
T1EC93C53D5DDA103BE2B7D6B585F126E3FE66B98336091D0E46D243428C23B53AD8AC1D
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/0x0007000000024545-2.dat	family_stormser
behavioral1/files/0x0009000000024535-6.dat	family_stormser
behavioral1/files/0x000800000002454d-10.dat	family_stormser
behavioral1/files/0x000a000000024535-14.dat	family_stormser
behavioral1/files/0x0002000000021d34-18.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
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{2F8B77EA-E36D-48a4-B1C3-912B62FA5FB3}	{FD3CD8AB-5DD5-4dea-9B54-F7A349FD3349}.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{C33094C2-EBB3-44c5-90F2-0B9FEDA17C28}	2026-10-26_b73e0e79e00d63abe27640f4ebe73877_elex_wannacry.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{C33094C2-EBB3-44c5-90F2-0B9FEDA17C28}\stubpath = "C:\\Windows\\{C33094C2-EBB3-44c5-90F2-0B9FEDA17C28}.exe"	2026-10-26_b73e0e79e00d63abe27640f4ebe73877_elex_wannacry.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{F05449C1-03C2-43aa-81B7-9922B67E08E5}\stubpath = "C:\\Windows\\{F05449C1-03C2-43aa-81B7-9922B67E08E5}.exe"	{C33094C2-EBB3-44c5-90F2-0B9FEDA17C28}.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{44384847-456C-4131-9C1E-C3017E75F98E}	{F05449C1-03C2-43aa-81B7-9922B67E08E5}.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{FD3CD8AB-5DD5-4dea-9B54-F7A349FD3349}\stubpath = "C:\\Windows\\{FD3CD8AB-5DD5-4dea-9B54-F7A349FD3349}.exe"	{44384847-456C-4131-9C1E-C3017E75F98E}.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{2F8B77EA-E36D-48a4-B1C3-912B62FA5FB3}\stubpath = "C:\\Windows\\{2F8B77EA-E36D-48a4-B1C3-912B62FA5FB3}.exe"	{FD3CD8AB-5DD5-4dea-9B54-F7A349FD3349}.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{F05449C1-03C2-43aa-81B7-9922B67E08E5}	{C33094C2-EBB3-44c5-90F2-0B9FEDA17C28}.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{44384847-456C-4131-9C1E-C3017E75F98E}\stubpath = "C:\\Windows\\{44384847-456C-4131-9C1E-C3017E75F98E}.exe"	{F05449C1-03C2-43aa-81B7-9922B67E08E5}.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{FD3CD8AB-5DD5-4dea-9B54-F7A349FD3349}	{44384847-456C-4131-9C1E-C3017E75F98E}.exe

Executes dropped EXE 5 IoCs

pid	Process
2060	{C33094C2-EBB3-44c5-90F2-0B9FEDA17C28}.exe
4640	{F05449C1-03C2-43aa-81B7-9922B67E08E5}.exe
552	{44384847-456C-4131-9C1E-C3017E75F98E}.exe
2288	{FD3CD8AB-5DD5-4dea-9B54-F7A349FD3349}.exe
1732	{2F8B77EA-E36D-48a4-B1C3-912B62FA5FB3}.exe

Drops file in Windows directory 5 IoCs

description	ioc	Process
File created	C:\Windows\{C33094C2-EBB3-44c5-90F2-0B9FEDA17C28}.exe	2026-10-26_b73e0e79e00d63abe27640f4ebe73877_elex_wannacry.exe
File created	C:\Windows\{F05449C1-03C2-43aa-81B7-9922B67E08E5}.exe	{C33094C2-EBB3-44c5-90F2-0B9FEDA17C28}.exe
File created	C:\Windows\{44384847-456C-4131-9C1E-C3017E75F98E}.exe	{F05449C1-03C2-43aa-81B7-9922B67E08E5}.exe
File created	C:\Windows\{FD3CD8AB-5DD5-4dea-9B54-F7A349FD3349}.exe	{44384847-456C-4131-9C1E-C3017E75F98E}.exe
File created	C:\Windows\{2F8B77EA-E36D-48a4-B1C3-912B62FA5FB3}.exe	{FD3CD8AB-5DD5-4dea-9B54-F7A349FD3349}.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
4988	cmd.exe
2568	cmd.exe
4880	cmd.exe
2476	cmd.exe
544	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	{C33094C2-EBB3-44c5-90F2-0B9FEDA17C28}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{44384847-456C-4131-9C1E-C3017E75F98E}.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	2026-10-26_b73e0e79e00d63abe27640f4ebe73877_elex_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{F05449C1-03C2-43aa-81B7-9922B67E08E5}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{FD3CD8AB-5DD5-4dea-9B54-F7A349FD3349}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{2F8B77EA-E36D-48a4-B1C3-912B62FA5FB3}.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	2812	2026-10-26_b73e0e79e00d63abe27640f4ebe73877_elex_wannacry.exe
Token: SeIncBasePriorityPrivilege	2060	{C33094C2-EBB3-44c5-90F2-0B9FEDA17C28}.exe
Token: SeIncBasePriorityPrivilege	4640	{F05449C1-03C2-43aa-81B7-9922B67E08E5}.exe
Token: SeIncBasePriorityPrivilege	552	{44384847-456C-4131-9C1E-C3017E75F98E}.exe
Token: SeIncBasePriorityPrivilege	2288	{FD3CD8AB-5DD5-4dea-9B54-F7A349FD3349}.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 2812 wrote to memory of 2060	2812	2026-10-26_b73e0e79e00d63abe27640f4ebe73877_elex_wannacry.exe	91
PID 2812 wrote to memory of 4988	2812	2026-10-26_b73e0e79e00d63abe27640f4ebe73877_elex_wannacry.exe	92
PID 2060 wrote to memory of 4640	2060	{C33094C2-EBB3-44c5-90F2-0B9FEDA17C28}.exe	93
PID 2060 wrote to memory of 2568	2060	{C33094C2-EBB3-44c5-90F2-0B9FEDA17C28}.exe	94
PID 4640 wrote to memory of 552	4640	{F05449C1-03C2-43aa-81B7-9922B67E08E5}.exe	97
PID 4640 wrote to memory of 4880	4640	{F05449C1-03C2-43aa-81B7-9922B67E08E5}.exe	98
PID 552 wrote to memory of 2288	552	{44384847-456C-4131-9C1E-C3017E75F98E}.exe	99
PID 552 wrote to memory of 2476	552	{44384847-456C-4131-9C1E-C3017E75F98E}.exe	100
PID 2288 wrote to memory of 1732	2288	{FD3CD8AB-5DD5-4dea-9B54-F7A349FD3349}.exe	101
PID 2288 wrote to memory of 544	2288	{FD3CD8AB-5DD5-4dea-9B54-F7A349FD3349}.exe	102

C:\Users\Admin\AppData\Local\Temp\2026-10-26_b73e0e79e00d63abe27640f4ebe73877_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-10-26_b73e0e79e00d63abe27640f4ebe73877_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:2812
- C:\Windows\{C33094C2-EBB3-44c5-90F2-0B9FEDA17C28}.exe
  C:\Windows\{C33094C2-EBB3-44c5-90F2-0B9FEDA17C28}.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:2060
- - C:\Windows\{F05449C1-03C2-43aa-81B7-9922B67E08E5}.exe
    C:\Windows\{F05449C1-03C2-43aa-81B7-9922B67E08E5}.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:4640
  - - C:\Windows\{44384847-456C-4131-9C1E-C3017E75F98E}.exe
      C:\Windows\{44384847-456C-4131-9C1E-C3017E75F98E}.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:552
    - - C:\Windows\{FD3CD8AB-5DD5-4dea-9B54-F7A349FD3349}.exe
        
        C:\Windows\{FD3CD8AB-5DD5-4dea-9B54-F7A349FD3349}.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:2288
      - C:\Windows\{2F8B77EA-E36D-48a4-B1C3-912B62FA5FB3}.exe
        
        C:\Windows\{2F8B77EA-E36D-48a4-B1C3-912B62FA5FB3}.exe
        6⤵
        Executes dropped EXE
        System Location Discovery: System Language Discovery
        
        PID:1732
      - C:\Windows\SysWOW64\cmd.exe
        
        C:\Windows\system32\cmd.exe /c del C:\Windows\{FD3CD~1.EXE > nul
        6⤵
        Executes a command shell one-liner
        System Location Discovery: System Language Discovery
        
        PID:544
    - - C:\Windows\SysWOW64\cmd.exe
        
        C:\Windows\system32\cmd.exe /c del C:\Windows\{44384~1.EXE > nul
        5⤵
        Executes a command shell one-liner
        System Location Discovery: System Language Discovery
        
        PID:2476
  - - C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c del C:\Windows\{F0544~1.EXE > nul
      4⤵
      Executes a command shell one-liner
      System Location Discovery: System Language Discovery
      PID:4880
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c del C:\Windows\{C3309~1.EXE > nul
    3⤵
    - Executes a command shell one-liner
    - System Location Discovery: System Language Discovery
    PID:2568
- 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:4988

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

{2F8B77EA-E36D-48a4-B1C3-912B62FA5FB3}.exe

Path C:\Windows\{2F8B77EA-E36D-48a4-B1C3-912B62FA5FB3}.exe
Size 90KB
SHA256 4c7e28161b38d2e543986b0c97512e9eb990e4af4ab8e297302b2fd605d6c8c3
MD5 438337126422c6ef14c545da487753ef
SHA1 809bf3e95337c519c93908985a99fef4d44912bd
SHA512 105c1867ef94e8ec9d5606848b925eff60fde11be67eb252c9ebe510777f5a6fcf032a15060569de7ff001c9395dcad538f7c7e7a24aa04809357935c9f020b7
SSDEEP 768:Qvw9816vhKQLroVt4/wQRNrfrunMxVFA3b7glws:YEGh0oVtl2unMxVS3Hgz
TLSH
T10893B53D5DDA103BE2B7D6B585F126E3FE66B98335091D0E46D243428C23B53AD8AC1D
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

{44384847-456C-4131-9C1E-C3017E75F98E}.exe

Path C:\Windows\{44384847-456C-4131-9C1E-C3017E75F98E}.exe
Size 90KB
SHA256 1ef3c9d35554da9f9bbcdf23ca5ec66cfe7c8687507944cbe4be6785bf4b7503
MD5 36573a7f7956a035c9e7baec19780fc9
SHA1 195f705ddf98026b424fb6f4d597b954b37a993c
SHA512 a04f89ea5f22aed3b6dee5e9508e937c11a19c7d51482a9335906edbb4db563c33469cd29d90b7b3cc78296f355adf93dc252a5a4b55f473ce8eb289e3a0cf62
SSDEEP 768:Qvw9816vhKQLroO4/wQRNrfrunMxVFA3b7glws:YEGh0oOl2unMxVS3Hgz
TLSH
T1E293C53D5DDA103BE2B7D6B485F126E3FE66B98336091D0E46D243428C23B53AD8AC1D
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

{C33094C2-EBB3-44c5-90F2-0B9FEDA17C28}.exe

Path C:\Windows\{C33094C2-EBB3-44c5-90F2-0B9FEDA17C28}.exe
Size 90KB
SHA256 c9ae63e83cc08776161e0a3473deab4e1c563d96730039fcfa4ca9be8c128261
MD5 628e5fe615353ea9a893e417d68774a9
SHA1 e0f73508469f36ce2f26efddf9a9ccefe220a2b4
SHA512 195612030aa9de1a9cda842fba5d82bb711cd29f46d0c3365b3bc34125419a3cc02d2b64574f978964a9728bc70163f9c2c929a62cec1c3c73608bfc874a3aea
SSDEEP 768:Qvw9816vhKQLroK4/wQRNrfrunMxVFA3b7glws:YEGh0oKl2unMxVS3Hgz
TLSH
T13E93C53D5DDA103BE2B7D6B585F126E3FE66B98339091D0E46D243428C23B53AD8AC1D
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

{F05449C1-03C2-43aa-81B7-9922B67E08E5}.exe

Path C:\Windows\{F05449C1-03C2-43aa-81B7-9922B67E08E5}.exe
Size 90KB
SHA256 b539f20a24ff38f02d68166019b58f6198b50b2cacb3740bb11c86de9a5843ce
MD5 ccd991b762f1187289877a6949ca36d1
SHA1 32fb1e2171c41fb56c91621efc7f3ba6336fa118
SHA512 42c761bdf5f3d45c89ceb9de15da5091aa28e60ec3e2b77ec1a48a1c5cd34869890242b6874cbc18c52403f7a73654a3241fd33e07e10261a50c11e4cddd68a0
SSDEEP 768:Qvw9816vhKQLroD4/wQRNrfrunMxVFA3b7glws:YEGh0oDl2unMxVS3Hgz
TLSH
T1A593B53D5DDA103BE2B7D6B585F126E3FE66B98336091D0E46D243428C23B53AD8AC1D
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

{FD3CD8AB-5DD5-4dea-9B54-F7A349FD3349}.exe

Path C:\Windows\{FD3CD8AB-5DD5-4dea-9B54-F7A349FD3349}.exe
Size 90KB
SHA256 2f62bd4eace9ed969827570025d91efaa7382fdaa6cb233053f7c7d1123e18db
MD5 0ee9251e0e6a9a3af66fe251dcb52f69
SHA1 422c905b6fb5e52e05ff99c0ae5534106fed2182
SHA512 d90789ee108ddd270a801697d76431fd1714da1f1c8fda2bed6ebf29be0bc2cb85c10abdaaecee857534d628612bb42808c35c0e6dfa343530fe05c0d5a01d9f
SSDEEP 768:Qvw9816vhKQLroAL4/wQRNrfrunMxVFA3b7glws:YEGh0oALl2unMxVS3Hgz
TLSH
T18B93B53D5DDA1037E2B7D6B585F126E3FE66B98336091D0E46D243428C23B53AD8AC1D
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