stormser | e0c1f8e7a571440b7668d93bb775f2f0f3c6a23c9c1be7b18dfdfdc73ff6b405

General

Target
2026-08-16_667b58db63d743d3d976f732836110c3_elex_wannacry.exe
Size 64KB
Sample260816-we93cstdjg
SHA256 e0c1f8e7a571440b7668d93bb775f2f0f3c6a23c9c1be7b18dfdfdc73ff6b405
MD5 667b58db63d743d3d976f732836110c3
SHA1 41140b06ff8b8ad143da44511d6b486ac4ec6ed1
SHA512 7d473ba68fc873002757489868664d457b4d8b70ce537b7d89527a71560e19f61c6232b76a2198c4216cb645c1969ccbcc83f56223351798a2093d561d5595bb
SSDEEP 384:vbLwOs8AHsc4sMfwhKQLroTQ4/CFsrdn0A9lsy4:vvw9816vhKQLroTQ4/wQH9lsl
TLSH
T1CD535C834BEE98F2F7D20131046D8A798277ADC4961EBE9F7F50CE54007B191D83A147
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/0x000800000002459a-2.dat	family_stormser
behavioral1/files/0x000800000002459b-6.dat	family_stormser
behavioral1/files/0x00080000000245a1-10.dat	family_stormser
behavioral1/files/0x00070000000245a7-14.dat	family_stormser
behavioral1/files/0x00070000000245b9-19.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\{AA6F15F3-38E4-4546-9650-D624318E8710}\stubpath = "C:\\Windows\\{AA6F15F3-38E4-4546-9650-D624318E8710}.exe"	{6FFBE6BC-C2C8-4798-AEB6-9B57F5BFFFA9}.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{B8214965-63ED-464e-B463-C7B6CEC4FB81}	{AA6F15F3-38E4-4546-9650-D624318E8710}.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{B8214965-63ED-464e-B463-C7B6CEC4FB81}\stubpath = "C:\\Windows\\{B8214965-63ED-464e-B463-C7B6CEC4FB81}.exe"	{AA6F15F3-38E4-4546-9650-D624318E8710}.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{2963AD39-E684-43a1-BC35-19BCF3568A56}	{B8214965-63ED-464e-B463-C7B6CEC4FB81}.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{6247385A-7ACB-4eab-9E08-93B7520CB0EC}	2026-08-16_667b58db63d743d3d976f732836110c3_elex_wannacry.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{6247385A-7ACB-4eab-9E08-93B7520CB0EC}\stubpath = "C:\\Windows\\{6247385A-7ACB-4eab-9E08-93B7520CB0EC}.exe"	2026-08-16_667b58db63d743d3d976f732836110c3_elex_wannacry.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{6FFBE6BC-C2C8-4798-AEB6-9B57F5BFFFA9}	{6247385A-7ACB-4eab-9E08-93B7520CB0EC}.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{6FFBE6BC-C2C8-4798-AEB6-9B57F5BFFFA9}\stubpath = "C:\\Windows\\{6FFBE6BC-C2C8-4798-AEB6-9B57F5BFFFA9}.exe"	{6247385A-7ACB-4eab-9E08-93B7520CB0EC}.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{AA6F15F3-38E4-4546-9650-D624318E8710}	{6FFBE6BC-C2C8-4798-AEB6-9B57F5BFFFA9}.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{2963AD39-E684-43a1-BC35-19BCF3568A56}\stubpath = "C:\\Windows\\{2963AD39-E684-43a1-BC35-19BCF3568A56}.exe"	{B8214965-63ED-464e-B463-C7B6CEC4FB81}.exe

Executes dropped EXE 5 IoCs

pid	Process
3292	{6247385A-7ACB-4eab-9E08-93B7520CB0EC}.exe
2628	{6FFBE6BC-C2C8-4798-AEB6-9B57F5BFFFA9}.exe
1116	{AA6F15F3-38E4-4546-9650-D624318E8710}.exe
4084	{B8214965-63ED-464e-B463-C7B6CEC4FB81}.exe
4628	{2963AD39-E684-43a1-BC35-19BCF3568A56}.exe

Drops file in Windows directory 5 IoCs

description	ioc	Process
File created	C:\Windows\{6247385A-7ACB-4eab-9E08-93B7520CB0EC}.exe	2026-08-16_667b58db63d743d3d976f732836110c3_elex_wannacry.exe
File created	C:\Windows\{6FFBE6BC-C2C8-4798-AEB6-9B57F5BFFFA9}.exe	{6247385A-7ACB-4eab-9E08-93B7520CB0EC}.exe
File created	C:\Windows\{AA6F15F3-38E4-4546-9650-D624318E8710}.exe	{6FFBE6BC-C2C8-4798-AEB6-9B57F5BFFFA9}.exe
File created	C:\Windows\{B8214965-63ED-464e-B463-C7B6CEC4FB81}.exe	{AA6F15F3-38E4-4546-9650-D624318E8710}.exe
File created	C:\Windows\{2963AD39-E684-43a1-BC35-19BCF3568A56}.exe	{B8214965-63ED-464e-B463-C7B6CEC4FB81}.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
2520	cmd.exe
4680	cmd.exe
2616	cmd.exe
2024	cmd.exe
2636	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	{B8214965-63ED-464e-B463-C7B6CEC4FB81}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{2963AD39-E684-43a1-BC35-19BCF3568A56}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{6FFBE6BC-C2C8-4798-AEB6-9B57F5BFFFA9}.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	2026-08-16_667b58db63d743d3d976f732836110c3_elex_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{6247385A-7ACB-4eab-9E08-93B7520CB0EC}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{AA6F15F3-38E4-4546-9650-D624318E8710}.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	2996	2026-08-16_667b58db63d743d3d976f732836110c3_elex_wannacry.exe
Token: SeIncBasePriorityPrivilege	3292	{6247385A-7ACB-4eab-9E08-93B7520CB0EC}.exe
Token: SeIncBasePriorityPrivilege	2628	{6FFBE6BC-C2C8-4798-AEB6-9B57F5BFFFA9}.exe
Token: SeIncBasePriorityPrivilege	1116	{AA6F15F3-38E4-4546-9650-D624318E8710}.exe
Token: SeIncBasePriorityPrivilege	4084	{B8214965-63ED-464e-B463-C7B6CEC4FB81}.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 2996 wrote to memory of 3292	2996	2026-08-16_667b58db63d743d3d976f732836110c3_elex_wannacry.exe	88
PID 2996 wrote to memory of 2520	2996	2026-08-16_667b58db63d743d3d976f732836110c3_elex_wannacry.exe	89
PID 3292 wrote to memory of 2628	3292	{6247385A-7ACB-4eab-9E08-93B7520CB0EC}.exe	90
PID 3292 wrote to memory of 4680	3292	{6247385A-7ACB-4eab-9E08-93B7520CB0EC}.exe	91
PID 2628 wrote to memory of 1116	2628	{6FFBE6BC-C2C8-4798-AEB6-9B57F5BFFFA9}.exe	94
PID 2628 wrote to memory of 2616	2628	{6FFBE6BC-C2C8-4798-AEB6-9B57F5BFFFA9}.exe	95
PID 1116 wrote to memory of 4084	1116	{AA6F15F3-38E4-4546-9650-D624318E8710}.exe	96
PID 1116 wrote to memory of 2024	1116	{AA6F15F3-38E4-4546-9650-D624318E8710}.exe	97
PID 4084 wrote to memory of 4628	4084	{B8214965-63ED-464e-B463-C7B6CEC4FB81}.exe	104
PID 4084 wrote to memory of 2636	4084	{B8214965-63ED-464e-B463-C7B6CEC4FB81}.exe	105

C:\Users\Admin\AppData\Local\Temp\2026-08-16_667b58db63d743d3d976f732836110c3_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-08-16_667b58db63d743d3d976f732836110c3_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:2996
- C:\Windows\{6247385A-7ACB-4eab-9E08-93B7520CB0EC}.exe
  C:\Windows\{6247385A-7ACB-4eab-9E08-93B7520CB0EC}.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:3292
- - C:\Windows\{6FFBE6BC-C2C8-4798-AEB6-9B57F5BFFFA9}.exe
    C:\Windows\{6FFBE6BC-C2C8-4798-AEB6-9B57F5BFFFA9}.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:2628
  - - C:\Windows\{AA6F15F3-38E4-4546-9650-D624318E8710}.exe
      C:\Windows\{AA6F15F3-38E4-4546-9650-D624318E8710}.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:1116
    - - C:\Windows\{B8214965-63ED-464e-B463-C7B6CEC4FB81}.exe
        
        C:\Windows\{B8214965-63ED-464e-B463-C7B6CEC4FB81}.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:4084
      - C:\Windows\{2963AD39-E684-43a1-BC35-19BCF3568A56}.exe
        
        C:\Windows\{2963AD39-E684-43a1-BC35-19BCF3568A56}.exe
        6⤵
        Executes dropped EXE
        System Location Discovery: System Language Discovery
        
        PID:4628
      - C:\Windows\SysWOW64\cmd.exe
        
        C:\Windows\system32\cmd.exe /c del C:\Windows\{B8214~1.EXE > nul
        6⤵
        Executes a command shell one-liner
        System Location Discovery: System Language Discovery
        
        PID:2636
    - - C:\Windows\SysWOW64\cmd.exe
        
        C:\Windows\system32\cmd.exe /c del C:\Windows\{AA6F1~1.EXE > nul
        5⤵
        Executes a command shell one-liner
        System Location Discovery: System Language Discovery
        
        PID:2024
  - - C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c del C:\Windows\{6FFBE~1.EXE > nul
      4⤵
      Executes a command shell one-liner
      System Location Discovery: System Language Discovery
      PID:2616
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c del C:\Windows\{62473~1.EXE > nul
    3⤵
    - Executes a command shell one-liner
    - System Location Discovery: System Language Discovery
    PID:4680
- 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:2520

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

{2963AD39-E684-43a1-BC35-19BCF3568A56}.exe

Path C:\Windows\{2963AD39-E684-43a1-BC35-19BCF3568A56}.exe
Size 64KB
SHA256 45871845b7db97ac80c299238971694f338d0cbf4e08d01672976b900f0a2a6e
MD5 8fa6210a3c80f57ebc45cafa881366e3
SHA1 b5dd4f0ed78256bf6f3285b8e277eb069ab64737
SHA512 1d9a0fc03e30ad4af3c4ba28044dc35cc7e8c91c81d4125ae23cc12bde25ae998fbd5a7f3f7fc2bfcc1fa454987e6b6810dc88da4dbc1a0e9ae385321daae739
SSDEEP 384:vbLwOs8AHsc4sMfwhKQLroF4/CFsrdn0A9lsy4:vvw9816vhKQLroF4/wQH9lsl
TLSH
T1F5535C834BEE98F2F7D20131046D8A798277ADC4961EBEAF7F90CE54007B191D83A14B
MD5 SHA1 SHA512 SSDEEP TLSH

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{6247385A-7ACB-4eab-9E08-93B7520CB0EC}.exe

Path C:\Windows\{6247385A-7ACB-4eab-9E08-93B7520CB0EC}.exe
Size 64KB
SHA256 6eb99a44fc66852480b5cb346aeec6043e96d6207bc63d65886eaad77afcf778
MD5 2edcc244bbd4d338dcde922b7fce67bb
SHA1 64baecdc4a374b0960de733037e60c8c71aead7c
SHA512 2d5508841bda694a5fce7298995d820867e181448ba7932e9f10841eb9d9569a8c8ea2142d475eb928601c24b483786f75fa8359287173d3ae094b34113ce9f0
SSDEEP 384:vbLwOs8AHsc4sMfwhKQLroo4/CFsrdn0A9lsy4:vvw9816vhKQLroo4/wQH9lsl
TLSH
T15F535C834BEE98F2F7D21131046D8AB99277ADC4961EBEAF7F50CE54007B191D83A14B
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

{6FFBE6BC-C2C8-4798-AEB6-9B57F5BFFFA9}.exe

Path C:\Windows\{6FFBE6BC-C2C8-4798-AEB6-9B57F5BFFFA9}.exe
Size 64KB
SHA256 2eb3cd0b6f8c855f579162d53960b1ad52d16d2d4089843bccf2f40301f97769
MD5 cf36a05fbb30cc5dad4fb01f5ed0a89b
SHA1 bd22c2dcaab0e799bff684e44ef68b993bc197d2
SHA512 bd1f0886f5f1a222c26fc3c6b9b5d75ee546ad8402abdba7ba2954c1609839456bd59a37ef6451c12c8940060ffece300d09e4ecf05652490ad28ab17b58163e
SSDEEP 384:vbLwOs8AHsc4sMfwhKQLroSL4/CFsrdn0A9lsy4:vvw9816vhKQLroSL4/wQH9lsl
TLSH
T1FB535C834BEE98F2F7D20131046D8AB99277ADC4961EBEAF7F50CE55007B191D83A14B
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

{AA6F15F3-38E4-4546-9650-D624318E8710}.exe

Path C:\Windows\{AA6F15F3-38E4-4546-9650-D624318E8710}.exe
Size 64KB
SHA256 a22c7383b1381bbd87ddf5b4f9201104ea35f5e81680c21a800841045d54749d
MD5 9bc91804354131ac6159f758af542ae9
SHA1 83536a92717413417e337df6fad1a04e4563feae
SHA512 4a706271500cf1af5b0509f21999abd517603524a55710985e46c03ce190866c5091e7f9500085648beddfd1e10757bef9ac72e9f3b4626bd97352596833e749
SSDEEP 384:vbLwOs8AHsc4sMfwhKQLroJ4/CFsrdn0A9lsy4:vvw9816vhKQLroJ4/wQH9lsl
TLSH
T1E1534C834BEE98F2F7920131056D8AB98277ADC4961EBEAF7F50CE54007B191D83A14B
MD5 SHA1 SHA512 SSDEEP TLSH

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{B8214965-63ED-464e-B463-C7B6CEC4FB81}.exe

Path C:\Windows\{B8214965-63ED-464e-B463-C7B6CEC4FB81}.exe
Size 64KB
SHA256 f7921e8816568b0e4da20b48e7f6e342e9f9480e38755ebcdf4f1689dbe9c331
MD5 aa8435eff34fcba2bf45543fa6bb7396
SHA1 c2524bcbbb8c1773b91f422f9dc9852cae09f86e
SHA512 ec6b9c4227183640b73d4833b6c5ac8e7774464455ddf8bd2e5000de47be51708b8bd2d4535e94f1cf9848ab940e13c7126b9b25d962cdff017b18f2d0a4951a
SSDEEP 384:vbLwOs8AHsc4sMfwhKQLrof4/CFsrdn0A9lsy4:vvw9816vhKQLrof4/wQH9lsl
TLSH
T15F535C834BEE9CF2F7920131046D8AB98277ADC4961EBEAF7F50CE54007B191D83A14B
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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Downloads