stormser | df87bd5bf76cf16b79fedc723e62f24e0e4e5863275f405cda4f24a5b7412a4c

General

Target
2026-08-16_cbd32bcbf9a3b76aa452e5d47a9bcedc_elex_wannacry.exe
Size 59KB
Sample260816-vcd2gaef34
SHA256 df87bd5bf76cf16b79fedc723e62f24e0e4e5863275f405cda4f24a5b7412a4c
MD5 cbd32bcbf9a3b76aa452e5d47a9bcedc
SHA1 34422d094a58c499d9d6324b47fa7ff1f2f896c8
SHA512 9872c4dcca555936fa933997f99d5cb512df023d348cf8e0d75d371c67d190fd9ca5038a6f478db61a3f402116eb79aa824584fb511a5415bfc1de4be22478bd
SSDEEP 192:MbOzawOs81elJHsc45CcRZOgtShcWaOT2QLrCqwj5Y04/CFxyNhoy5t:MbLwOs8AHsc4sMfwhKQLrojL4/CFsrd
TLSH
T1AE43F7834BEE9CF2F791113108798AB9927B99D4950EBE9FBF90CD550037292E53A10B
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/0x00070000000244c5-2.dat	family_stormser
behavioral1/files/0x000a0000000244a2-6.dat	family_stormser
behavioral1/files/0x000f0000000244cc-10.dat	family_stormser
behavioral1/files/0x00080000000244cd-14.dat	family_stormser
behavioral1/files/0x000300000001e0f4-18.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\{973832E7-B1CF-4238-BA0F-4A3559B577AF}	2026-08-16_cbd32bcbf9a3b76aa452e5d47a9bcedc_elex_wannacry.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{973832E7-B1CF-4238-BA0F-4A3559B577AF}\stubpath = "C:\\Windows\\{973832E7-B1CF-4238-BA0F-4A3559B577AF}.exe"	2026-08-16_cbd32bcbf9a3b76aa452e5d47a9bcedc_elex_wannacry.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{905F13F1-2D7D-4d44-B16D-F760EEAD634F}	{973832E7-B1CF-4238-BA0F-4A3559B577AF}.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{905F13F1-2D7D-4d44-B16D-F760EEAD634F}\stubpath = "C:\\Windows\\{905F13F1-2D7D-4d44-B16D-F760EEAD634F}.exe"	{973832E7-B1CF-4238-BA0F-4A3559B577AF}.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{9387E4A6-C181-4870-9764-139E0A4ACDED}\stubpath = "C:\\Windows\\{9387E4A6-C181-4870-9764-139E0A4ACDED}.exe"	{905F13F1-2D7D-4d44-B16D-F760EEAD634F}.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{5C1F8450-062C-4c36-BA85-0C7B79EA0ACD}	{9387E4A6-C181-4870-9764-139E0A4ACDED}.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{5C1F8450-062C-4c36-BA85-0C7B79EA0ACD}\stubpath = "C:\\Windows\\{5C1F8450-062C-4c36-BA85-0C7B79EA0ACD}.exe"	{9387E4A6-C181-4870-9764-139E0A4ACDED}.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{4FDD5D1E-8A3F-491d-83A5-9590659C512B}	{5C1F8450-062C-4c36-BA85-0C7B79EA0ACD}.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{9387E4A6-C181-4870-9764-139E0A4ACDED}	{905F13F1-2D7D-4d44-B16D-F760EEAD634F}.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{4FDD5D1E-8A3F-491d-83A5-9590659C512B}\stubpath = "C:\\Windows\\{4FDD5D1E-8A3F-491d-83A5-9590659C512B}.exe"	{5C1F8450-062C-4c36-BA85-0C7B79EA0ACD}.exe

Executes dropped EXE 5 IoCs

pid	Process
3188	{973832E7-B1CF-4238-BA0F-4A3559B577AF}.exe
2396	{905F13F1-2D7D-4d44-B16D-F760EEAD634F}.exe
4032	{9387E4A6-C181-4870-9764-139E0A4ACDED}.exe
2348	{5C1F8450-062C-4c36-BA85-0C7B79EA0ACD}.exe
1452	{4FDD5D1E-8A3F-491d-83A5-9590659C512B}.exe

Drops file in Windows directory 5 IoCs

description	ioc	Process
File created	C:\Windows\{905F13F1-2D7D-4d44-B16D-F760EEAD634F}.exe	{973832E7-B1CF-4238-BA0F-4A3559B577AF}.exe
File created	C:\Windows\{9387E4A6-C181-4870-9764-139E0A4ACDED}.exe	{905F13F1-2D7D-4d44-B16D-F760EEAD634F}.exe
File created	C:\Windows\{5C1F8450-062C-4c36-BA85-0C7B79EA0ACD}.exe	{9387E4A6-C181-4870-9764-139E0A4ACDED}.exe
File created	C:\Windows\{4FDD5D1E-8A3F-491d-83A5-9590659C512B}.exe	{5C1F8450-062C-4c36-BA85-0C7B79EA0ACD}.exe
File created	C:\Windows\{973832E7-B1CF-4238-BA0F-4A3559B577AF}.exe	2026-08-16_cbd32bcbf9a3b76aa452e5d47a9bcedc_elex_wannacry.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
1076	cmd.exe
1592	cmd.exe
4028	cmd.exe
5044	cmd.exe
4152	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	{5C1F8450-062C-4c36-BA85-0C7B79EA0ACD}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{973832E7-B1CF-4238-BA0F-4A3559B577AF}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{905F13F1-2D7D-4d44-B16D-F760EEAD634F}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{4FDD5D1E-8A3F-491d-83A5-9590659C512B}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-08-16_cbd32bcbf9a3b76aa452e5d47a9bcedc_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	{9387E4A6-C181-4870-9764-139E0A4ACDED}.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	1388	2026-08-16_cbd32bcbf9a3b76aa452e5d47a9bcedc_elex_wannacry.exe
Token: SeIncBasePriorityPrivilege	3188	{973832E7-B1CF-4238-BA0F-4A3559B577AF}.exe
Token: SeIncBasePriorityPrivilege	2396	{905F13F1-2D7D-4d44-B16D-F760EEAD634F}.exe
Token: SeIncBasePriorityPrivilege	4032	{9387E4A6-C181-4870-9764-139E0A4ACDED}.exe
Token: SeIncBasePriorityPrivilege	2348	{5C1F8450-062C-4c36-BA85-0C7B79EA0ACD}.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 1388 wrote to memory of 3188	1388	2026-08-16_cbd32bcbf9a3b76aa452e5d47a9bcedc_elex_wannacry.exe	92
PID 1388 wrote to memory of 1076	1388	2026-08-16_cbd32bcbf9a3b76aa452e5d47a9bcedc_elex_wannacry.exe	93
PID 3188 wrote to memory of 2396	3188	{973832E7-B1CF-4238-BA0F-4A3559B577AF}.exe	94
PID 3188 wrote to memory of 1592	3188	{973832E7-B1CF-4238-BA0F-4A3559B577AF}.exe	95
PID 2396 wrote to memory of 4032	2396	{905F13F1-2D7D-4d44-B16D-F760EEAD634F}.exe	97
PID 2396 wrote to memory of 4028	2396	{905F13F1-2D7D-4d44-B16D-F760EEAD634F}.exe	98
PID 4032 wrote to memory of 2348	4032	{9387E4A6-C181-4870-9764-139E0A4ACDED}.exe	99
PID 4032 wrote to memory of 5044	4032	{9387E4A6-C181-4870-9764-139E0A4ACDED}.exe	100
PID 2348 wrote to memory of 1452	2348	{5C1F8450-062C-4c36-BA85-0C7B79EA0ACD}.exe	101
PID 2348 wrote to memory of 4152	2348	{5C1F8450-062C-4c36-BA85-0C7B79EA0ACD}.exe	102

C:\Users\Admin\AppData\Local\Temp\2026-08-16_cbd32bcbf9a3b76aa452e5d47a9bcedc_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-08-16_cbd32bcbf9a3b76aa452e5d47a9bcedc_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:1388
- C:\Windows\{973832E7-B1CF-4238-BA0F-4A3559B577AF}.exe
  C:\Windows\{973832E7-B1CF-4238-BA0F-4A3559B577AF}.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:3188
- - C:\Windows\{905F13F1-2D7D-4d44-B16D-F760EEAD634F}.exe
    C:\Windows\{905F13F1-2D7D-4d44-B16D-F760EEAD634F}.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:2396
  - - C:\Windows\{9387E4A6-C181-4870-9764-139E0A4ACDED}.exe
      C:\Windows\{9387E4A6-C181-4870-9764-139E0A4ACDED}.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:4032
    - - C:\Windows\{5C1F8450-062C-4c36-BA85-0C7B79EA0ACD}.exe
        
        C:\Windows\{5C1F8450-062C-4c36-BA85-0C7B79EA0ACD}.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:2348
      - C:\Windows\{4FDD5D1E-8A3F-491d-83A5-9590659C512B}.exe
        
        C:\Windows\{4FDD5D1E-8A3F-491d-83A5-9590659C512B}.exe
        6⤵
        Executes dropped EXE
        System Location Discovery: System Language Discovery
        
        PID:1452
      - C:\Windows\SysWOW64\cmd.exe
        
        C:\Windows\system32\cmd.exe /c del C:\Windows\{5C1F8~1.EXE > nul
        6⤵
        Executes a command shell one-liner
        System Location Discovery: System Language Discovery
        
        PID:4152
    - - C:\Windows\SysWOW64\cmd.exe
        
        C:\Windows\system32\cmd.exe /c del C:\Windows\{9387E~1.EXE > nul
        5⤵
        Executes a command shell one-liner
        System Location Discovery: System Language Discovery
        
        PID:5044
  - - C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c del C:\Windows\{905F1~1.EXE > nul
      4⤵
      Executes a command shell one-liner
      System Location Discovery: System Language Discovery
      PID:4028
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c del C:\Windows\{97383~1.EXE > nul
    3⤵
    - Executes a command shell one-liner
    - System Location Discovery: System Language Discovery
    PID:1592
- 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:1076

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

{4FDD5D1E-8A3F-491d-83A5-9590659C512B}.exe

Path C:\Windows\{4FDD5D1E-8A3F-491d-83A5-9590659C512B}.exe
Size 59KB
SHA256 73c8bcc45c993ffd3648109f793077cc19fbb8c3c2d8c24ba6b09b46c46ecd3a
MD5 eb404c05de3a508e59944f046171293d
SHA1 d1028677967d085cc60fcc6bb99596a5ed9459cd
SHA512 e0be2032879a6afeba68a0492dc2a6646dbe23c44afd06e1ced252a7243403b0383a3569dbea4a99338a09716f3072c5d8ec07a4614832567303f1395b9ac74a
SSDEEP 192:MbOzawOs81elJHsc45CcRZOgtShcWaOT2QLrCqwAY04/CFxyNhoy5t:MbLwOs8AHsc4sMfwhKQLroO4/CFsrd
TLSH
T15043F7834BEE9CF2F791117108798BB9927B99D4950EBEDFBB90CD150037292E53A10B
MD5 SHA1 SHA512 SSDEEP TLSH

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{5C1F8450-062C-4c36-BA85-0C7B79EA0ACD}.exe

Path C:\Windows\{5C1F8450-062C-4c36-BA85-0C7B79EA0ACD}.exe
Size 59KB
SHA256 93a920a0ee6b11e670f348c31e90a551409dc315eff89519654842e0dfb0b5bf
MD5 7f8787729fb598ce3b690b723ca69e78
SHA1 9f579a9dce8fef45cb1d55baf1447388c53feaad
SHA512 8e99f764c53108481dfcd3d86414b17f25b9a48a30d4bf541af8bb008979a5d8611587bbb270baa5554f5325bbd54a24a4af79d41c0f33c2f9638131e374d525
SSDEEP 192:MbOzawOs81elJHsc45CcRZOgtShcWaOT2QLrCqw7Y04/CFxyNhoy5t:MbLwOs8AHsc4sMfwhKQLro94/CFsrd
TLSH
T17B43F7834BEE9CF2F791113108798BB9927B99D4910EBE9FBF90CD150037292E53A10B
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

{905F13F1-2D7D-4d44-B16D-F760EEAD634F}.exe

Path C:\Windows\{905F13F1-2D7D-4d44-B16D-F760EEAD634F}.exe
Size 59KB
SHA256 abe597029c6a90c05deeee26ec25a8f79a5cf6ac64d551486d047605f2080dd0
MD5 85055f2ee3ed76d1a3b0419cc9946b5c
SHA1 d6c5c56d74d29a795ed53b396391d302dd29fbe6
SHA512 5d87d09b92c90917f2fddd2644c2fe39e36cb4a9b928231b96ab477d2c4756bd709e1ceb49efd467a2e4d8ccb26bc0b4b5373f9fbdf7e82cec14eeb0a2b215e6
SSDEEP 192:MbOzawOs81elJHsc45CcRZOgtShcWaOT2QLrCqwGY04/CFxyNhoy5t:MbLwOs8AHsc4sMfwhKQLros4/CFsrd
TLSH
T19843F7834BEE9CF2F791113118798AB9927B99D4950EBEDFBF90CD150037292E53A10B
MD5 SHA1 SHA512 SSDEEP TLSH

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{9387E4A6-C181-4870-9764-139E0A4ACDED}.exe

Path C:\Windows\{9387E4A6-C181-4870-9764-139E0A4ACDED}.exe
Size 59KB
SHA256 462ec11335b96512ccf4dc7e209f4f467ce9659e98d3bd6dee0693cd66d872c6
MD5 c1efb0e19faf49735f56df148ff1d02b
SHA1 0523d8482ab16d1660034272de0d8bde93553982
SHA512 549f46331313e83faf39059a8fd7535297f6da2c87dc78828d85f452a06aba931f25e0ac6195f19ee00a5d736659ffafcdf0852479b1b0d2cf3d52265ee33451
SSDEEP 192:MbOzawOs81elJHsc45CcRZOgtShcWaOT2QLrCqwZY04/CFxyNhoy5t:MbLwOs8AHsc4sMfwhKQLror4/CFsrd
TLSH
T16043F7834BEE9CF2F791117108798AB9927B99D4950EBE9FBB90CD150037292E53A10B
MD5 SHA1 SHA512 SSDEEP TLSH

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{973832E7-B1CF-4238-BA0F-4A3559B577AF}.exe

Path C:\Windows\{973832E7-B1CF-4238-BA0F-4A3559B577AF}.exe
Size 59KB
SHA256 325e1253400bff5043f6281a3a95552f39da1cba929ad2b94ba95cbf0392ad3d
MD5 51400c70046098015ff4157b4d197006
SHA1 4ea110c066b2a05d5864a28406b29c456b1e1a21
SHA512 c0979999d9a744f0f66bd888e72a444814f04b6e466fa95d5b650066291060615fc48d2399005258bbed1f9b271c0e3089823e4cc173ce731f2695b4270cdee0
SSDEEP 192:MbOzawOs81elJHsc45CcRZOgtShcWaOT2QLrCqwZY04/CFxyNhoy5t:MbLwOs8AHsc4sMfwhKQLror4/CFsrd
TLSH
T13C4308834BEE9CF2F791113108798AB9927B99D4950EBEDFBF90CD150037292E43A10B
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