stormser | d97a37d92fc551aae2477972c2ce8ab3bb8a7926513cc65c5d25ef7bd7203a70

General

Target
2026-11-01_c9e302af9878e7ecfef27c7d564e1d70_elex_wannacry.exe
Size 79KB
Sample261102-kptycaef25
SHA256 d97a37d92fc551aae2477972c2ce8ab3bb8a7926513cc65c5d25ef7bd7203a70
MD5 c9e302af9878e7ecfef27c7d564e1d70
SHA1 51643c2f9dca5975ac26019ceaf45849ecaf4922
SHA512 c63b40672b52b156c6646c59cb259f4d4b1df86b6b8901052ead93535f0898a3065b24a964263c32487373efdfd990d0fc2d814343ef0eb35f442f3e0c8359ac
SSDEEP 768:4vw9816vhKQLro24/wQzXOQ69zbjlAAX5e9zx:wEGh0o2lGizbR9Xwzx
TLSH
T100834BD38EAC4483FDE6697012A8D9B77C3E97C61604B99B6B91FD5408A33C1EB2411E
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 4 IoCs

resource	yara_rule
behavioral1/files/0x000700000002457f-3.dat	family_stormser
behavioral1/files/0x0008000000024570-5.dat	family_stormser
behavioral1/files/0x0008000000024587-10.dat	family_stormser
behavioral1/files/0x0009000000024570-14.dat	family_stormser

Boot or Logon Autostart Execution: Active Setup 2 TTPs 8 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\{D2497993-DC78-4188-92DE-6ADBB177A6DA}\stubpath = "C:\\Windows\\{D2497993-DC78-4188-92DE-6ADBB177A6DA}.exe"	2026-11-01_c9e302af9878e7ecfef27c7d564e1d70_elex_wannacry.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{09D7F29B-639D-49b3-B960-BEC1EA7D2A74}	{D2497993-DC78-4188-92DE-6ADBB177A6DA}.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{09D7F29B-639D-49b3-B960-BEC1EA7D2A74}\stubpath = "C:\\Windows\\{09D7F29B-639D-49b3-B960-BEC1EA7D2A74}.exe"	{D2497993-DC78-4188-92DE-6ADBB177A6DA}.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{41EB8C65-C65F-45aa-A330-E24A5E9F16B6}	{09D7F29B-639D-49b3-B960-BEC1EA7D2A74}.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{41EB8C65-C65F-45aa-A330-E24A5E9F16B6}\stubpath = "C:\\Windows\\{41EB8C65-C65F-45aa-A330-E24A5E9F16B6}.exe"	{09D7F29B-639D-49b3-B960-BEC1EA7D2A74}.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{EFD42202-AC24-44f3-91EE-D1FFF943ABC6}	{41EB8C65-C65F-45aa-A330-E24A5E9F16B6}.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{EFD42202-AC24-44f3-91EE-D1FFF943ABC6}\stubpath = "C:\\Windows\\{EFD42202-AC24-44f3-91EE-D1FFF943ABC6}.exe"	{41EB8C65-C65F-45aa-A330-E24A5E9F16B6}.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{D2497993-DC78-4188-92DE-6ADBB177A6DA}	2026-11-01_c9e302af9878e7ecfef27c7d564e1d70_elex_wannacry.exe

Executes dropped EXE 4 IoCs

pid	Process
5192	{D2497993-DC78-4188-92DE-6ADBB177A6DA}.exe
4744	{09D7F29B-639D-49b3-B960-BEC1EA7D2A74}.exe
6044	{41EB8C65-C65F-45aa-A330-E24A5E9F16B6}.exe
1264	{EFD42202-AC24-44f3-91EE-D1FFF943ABC6}.exe

Drops file in Windows directory 4 IoCs

description	ioc	Process
File created	C:\Windows\{09D7F29B-639D-49b3-B960-BEC1EA7D2A74}.exe	{D2497993-DC78-4188-92DE-6ADBB177A6DA}.exe
File created	C:\Windows\{41EB8C65-C65F-45aa-A330-E24A5E9F16B6}.exe	{09D7F29B-639D-49b3-B960-BEC1EA7D2A74}.exe
File created	C:\Windows\{EFD42202-AC24-44f3-91EE-D1FFF943ABC6}.exe	{41EB8C65-C65F-45aa-A330-E24A5E9F16B6}.exe
File created	C:\Windows\{D2497993-DC78-4188-92DE-6ADBB177A6DA}.exe	2026-11-01_c9e302af9878e7ecfef27c7d564e1d70_elex_wannacry.exe

Executes a command shell one-liner 1 TTPs 4 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
5504	cmd.exe
5428	cmd.exe
4928	cmd.exe
3300	cmd.exe

System Location Discovery: System Language Discovery 1 TTPs 9 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	2026-11-01_c9e302af9878e7ecfef27c7d564e1d70_elex_wannacry.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	{41EB8C65-C65F-45aa-A330-E24A5E9F16B6}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{EFD42202-AC24-44f3-91EE-D1FFF943ABC6}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{D2497993-DC78-4188-92DE-6ADBB177A6DA}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{09D7F29B-639D-49b3-B960-BEC1EA7D2A74}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	4596	2026-11-01_c9e302af9878e7ecfef27c7d564e1d70_elex_wannacry.exe
Token: SeIncBasePriorityPrivilege	5192	{D2497993-DC78-4188-92DE-6ADBB177A6DA}.exe
Token: SeIncBasePriorityPrivilege	4744	{09D7F29B-639D-49b3-B960-BEC1EA7D2A74}.exe
Token: SeIncBasePriorityPrivilege	6044	{41EB8C65-C65F-45aa-A330-E24A5E9F16B6}.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 4596 wrote to memory of 5192	4596	2026-11-01_c9e302af9878e7ecfef27c7d564e1d70_elex_wannacry.exe	95
PID 4596 wrote to memory of 3300	4596	2026-11-01_c9e302af9878e7ecfef27c7d564e1d70_elex_wannacry.exe	96
PID 5192 wrote to memory of 4744	5192	{D2497993-DC78-4188-92DE-6ADBB177A6DA}.exe	97
PID 5192 wrote to memory of 5504	5192	{D2497993-DC78-4188-92DE-6ADBB177A6DA}.exe	98
PID 4744 wrote to memory of 6044	4744	{09D7F29B-639D-49b3-B960-BEC1EA7D2A74}.exe	102
PID 4744 wrote to memory of 5428	4744	{09D7F29B-639D-49b3-B960-BEC1EA7D2A74}.exe	103
PID 6044 wrote to memory of 1264	6044	{41EB8C65-C65F-45aa-A330-E24A5E9F16B6}.exe	104
PID 6044 wrote to memory of 4928	6044	{41EB8C65-C65F-45aa-A330-E24A5E9F16B6}.exe	105

C:\Users\Admin\AppData\Local\Temp\2026-11-01_c9e302af9878e7ecfef27c7d564e1d70_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-11-01_c9e302af9878e7ecfef27c7d564e1d70_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:4596
- C:\Windows\{D2497993-DC78-4188-92DE-6ADBB177A6DA}.exe
  C:\Windows\{D2497993-DC78-4188-92DE-6ADBB177A6DA}.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:5192
- - C:\Windows\{09D7F29B-639D-49b3-B960-BEC1EA7D2A74}.exe
    C:\Windows\{09D7F29B-639D-49b3-B960-BEC1EA7D2A74}.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:4744
  - - C:\Windows\{41EB8C65-C65F-45aa-A330-E24A5E9F16B6}.exe
      C:\Windows\{41EB8C65-C65F-45aa-A330-E24A5E9F16B6}.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:6044
    - - C:\Windows\{EFD42202-AC24-44f3-91EE-D1FFF943ABC6}.exe
        
        C:\Windows\{EFD42202-AC24-44f3-91EE-D1FFF943ABC6}.exe
        5⤵
        Executes dropped EXE
        System Location Discovery: System Language Discovery
        
        PID:1264
    - - C:\Windows\SysWOW64\cmd.exe
        
        C:\Windows\system32\cmd.exe /c del C:\Windows\{41EB8~1.EXE > nul
        5⤵
        Executes a command shell one-liner
        System Location Discovery: System Language Discovery
        
        PID:4928
  - - C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c del C:\Windows\{09D7F~1.EXE > nul
      4⤵
      Executes a command shell one-liner
      System Location Discovery: System Language Discovery
      PID:5428
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c del C:\Windows\{D2497~1.EXE > nul
    3⤵
    - Executes a command shell one-liner
    - System Location Discovery: System Language Discovery
    PID:5504
- 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:3300

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

{09D7F29B-639D-49b3-B960-BEC1EA7D2A74}.exe

Path C:\Windows\{09D7F29B-639D-49b3-B960-BEC1EA7D2A74}.exe
Size 79KB
SHA256 3b248d9e7c2960cb586f0e2784222fdb62a37633a02d38fdcfe15f0f50b0491f
MD5 2738bdee42a1e47030c3881c74ef255a
SHA1 b13010c7dce17247d8fea499002841b94a43fc7f
SHA512 8167c678d10049e78f09c83ff0525e8cc08fc46b89061a0778512c6af2d0b18250f3698d94f79ec617912ba1e237845211e1bdd8fbeb769081644df76a3a29e4
SSDEEP 768:4vw9816vhKQLroi4/wQzXOQ69zbjlAAX5e9zx:wEGh0oilGizbR9Xwzx
TLSH
T131834BD38EAC4483FDE6697012B8D9B77C3E97C61604B99B6B91FD5408A33C1EB2411E
MD5 SHA1 SHA512 SSDEEP TLSH

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{41EB8C65-C65F-45aa-A330-E24A5E9F16B6}.exe

Path C:\Windows\{41EB8C65-C65F-45aa-A330-E24A5E9F16B6}.exe
Size 79KB
SHA256 5c1673517de5c8bdb9be8148fc593ca3b45b2c2161d270fd30cf2aade203c186
MD5 c3e9f56a98640acd6646186cf8b06c7b
SHA1 a7b887f7b590066fb7fc31898038b12891da1832
SHA512 32a39c953964a8be857d65101f04c6b1adc39e493e9511afdc951cce17f3fd849cadac521e667affd1edb11340cafbda869f2e7943ac934ca8de31a703362f3f
SSDEEP 768:4vw9816vhKQLro+4/wQzXOQ69zbjlAAX5e9zx:wEGh0o+lGizbR9Xwzx
TLSH
T13F834BD38EAC4483FDD6697012B8D9B77C3E97C61504799B6B91FD5408A33C1EB2411E
MD5 SHA1 SHA512 SSDEEP TLSH

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{D2497993-DC78-4188-92DE-6ADBB177A6DA}.exe

Path C:\Windows\{D2497993-DC78-4188-92DE-6ADBB177A6DA}.exe
Size 79KB
SHA256 6e3db7dfb34742cfbf7a9a2ebbf3b9019ad31b86663cf90765c6cc229ce56e49
MD5 81a121583568c9ead0183f3ac2a8840f
SHA1 6f3da3f79f042628c4b6085c0306fcefb19f13e5
SHA512 660845dd26fe528c10980b08b17dbdc1f2a57647bc59aa00a446c99872cdcf217173b18241c32476a033b6244c74561028173e8345de1e71d89e06c9f109b8c3
SSDEEP 768:4vw9816vhKQLroW4/wQzXOQ69zbjlAAX5e9zx:wEGh0oWlGizbR9Xwzx
TLSH
T1F1834BD38EAC4483FDE6697012B8D9B77C3E97C61604B99B6B91FD5408A33C1EB2411E
MD5 SHA1 SHA512 SSDEEP TLSH

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{EFD42202-AC24-44f3-91EE-D1FFF943ABC6}.exe

Path C:\Windows\{EFD42202-AC24-44f3-91EE-D1FFF943ABC6}.exe
Size 79KB
SHA256 94a553fb39cdd1a3267db3a184cc519a157d766077897eca67032f9bd2417d7c
MD5 a64e2cf46ffb3c5e2c01ffde2091b4a3
SHA1 e82b6ccd521442bdc05aea9c54bd3e3fe255b9c5
SHA512 7f4fdddf58195a2583f7700b330cf86f49e9d17ed562e08409c27a3946ab60b4ceb9d0d14df80db89b329c43c3a3c2a5cb10c8852daaa9c534bc2a2c2ab3e823
SSDEEP 768:4vw9816vhKQLroZ4/wQzXOQ69zbjlAAX5e9zx:wEGh0oZlGizbR9Xwzx
TLSH
T1AC834BD38EAC4483FDE6697012B8D9B77C3E97C61604B99B6B91FD5408A33C1EB2411E
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