stormser | 7605242ad9994db501dfdb93794d57a0e5636f65af7ebb267d31976834d5473e

General

Target
2026-07-05_27d724b4cb7bd7357b29ae013b3c054b_elex_wannacry.exe
Size 79KB
Sample260705-vtcjzaet61
SHA256 7605242ad9994db501dfdb93794d57a0e5636f65af7ebb267d31976834d5473e
MD5 27d724b4cb7bd7357b29ae013b3c054b
SHA1 b1242003a3df14bf9e43d592908f4baaf622708a
SHA512 5394850b674c6cf4bf55cc83f4a2a71edd5c2cf8795d9de9d9a826b13e5372c695f8e503a741bb4d98bdd033e9630374bb8f642951b467ed7c8cde2b86f78a66
SSDEEP 768:4vw9816vhKQLroQ4/wQpWMZ3XOQ69zbjlAAX5e9zB:wEGh0oQloWMZ3izbR9XwzB
TLSH
T16E834BC38E6C6483FE96297012A8DABB7D3E97C65544B9976F90FC5408A33C1EB3811D
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

discovery 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 3 IoCs

resource	yara_rule
behavioral2/files/0x000e00000001c4e9-3.dat	family_stormser
behavioral2/files/0x000e00000001c4ea-6.dat	family_stormser
behavioral2/files/0x000e00000001c4ec-13.dat	family_stormser

Detects Windows executables referencing non-Windows User-Agents 3 IoCs

resource	yara_rule
behavioral2/files/0x000e00000001c4e9-3.dat	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
behavioral2/files/0x000e00000001c4ea-6.dat	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
behavioral2/files/0x000e00000001c4ec-13.dat	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA

Boot or Logon Autostart Execution: Active Setup 2 TTPs 6 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\{2D375B8E-A448-41e7-A471-2B34635FAE9B}	2026-07-05_27d724b4cb7bd7357b29ae013b3c054b_elex_wannacry.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{2D375B8E-A448-41e7-A471-2B34635FAE9B}\stubpath = "C:\\Windows\\{2D375B8E-A448-41e7-A471-2B34635FAE9B}.exe"	2026-07-05_27d724b4cb7bd7357b29ae013b3c054b_elex_wannacry.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{C9D0EF6B-52A0-433b-993B-054B03787271}	{2D375B8E-A448-41e7-A471-2B34635FAE9B}.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{C9D0EF6B-52A0-433b-993B-054B03787271}\stubpath = "C:\\Windows\\{C9D0EF6B-52A0-433b-993B-054B03787271}.exe"	{2D375B8E-A448-41e7-A471-2B34635FAE9B}.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{4584CD6C-F790-4ea4-969F-659706DEF760}	{C9D0EF6B-52A0-433b-993B-054B03787271}.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{4584CD6C-F790-4ea4-969F-659706DEF760}\stubpath = "C:\\Windows\\{4584CD6C-F790-4ea4-969F-659706DEF760}.exe"	{C9D0EF6B-52A0-433b-993B-054B03787271}.exe

Executes dropped EXE 4 IoCs

pid	Process
712	{2D375B8E-A448-41e7-A471-2B34635FAE9B}.exe
908	{C9D0EF6B-52A0-433b-993B-054B03787271}.exe
5476	{4584CD6C-F790-4ea4-969F-659706DEF760}.exe
2288	{4584CD6C-F790-4ea4-969F-659706DEF760}.exe

Drops file in Windows directory 3 IoCs

description	ioc	Process
File created	C:\Windows\{2D375B8E-A448-41e7-A471-2B34635FAE9B}.exe	2026-07-05_27d724b4cb7bd7357b29ae013b3c054b_elex_wannacry.exe
File created	C:\Windows\{C9D0EF6B-52A0-433b-993B-054B03787271}.exe	{2D375B8E-A448-41e7-A471-2B34635FAE9B}.exe
File created	C:\Windows\{4584CD6C-F790-4ea4-969F-659706DEF760}.exe	{C9D0EF6B-52A0-433b-993B-054B03787271}.exe

System Location Discovery: System Language Discovery 1 TTPs 8 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	{2D375B8E-A448-41e7-A471-2B34635FAE9B}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-07-05_27d724b4cb7bd7357b29ae013b3c054b_elex_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{C9D0EF6B-52A0-433b-993B-054B03787271}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{4584CD6C-F790-4ea4-969F-659706DEF760}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{4584CD6C-F790-4ea4-969F-659706DEF760}.exe

Modifies registry class 3 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\Software\Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppModel\Deployment\Package\*\S-1-5-21-557124681-2609731375-3674401788-1000\{14A3CD99-78A5-4248-B0E9-0BBBE6445826}	explorer.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{A8CDFF1C-4878-43be-B5FD-F8091C1C60D0}\Instance\	explorer.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{B4BFCC3A-DB2C-424C-B029-7FE99A87C641}\Instance\	explorer.exe

Suspicious use of AdjustPrivilegeToken 7 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	1552	2026-07-05_27d724b4cb7bd7357b29ae013b3c054b_elex_wannacry.exe
Token: SeIncBasePriorityPrivilege	712	{2D375B8E-A448-41e7-A471-2B34635FAE9B}.exe
Token: SeIncBasePriorityPrivilege	908	{C9D0EF6B-52A0-433b-993B-054B03787271}.exe
Token: SeShutdownPrivilege	4980	explorer.exe
Token: SeCreatePagefilePrivilege	4980	explorer.exe
Token: SeShutdownPrivilege	4980	explorer.exe
Token: SeCreatePagefilePrivilege	4980	explorer.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
5724	sihost.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1552 wrote to memory of 712	1552	2026-07-05_27d724b4cb7bd7357b29ae013b3c054b_elex_wannacry.exe	88
PID 1552 wrote to memory of 4128	1552	2026-07-05_27d724b4cb7bd7357b29ae013b3c054b_elex_wannacry.exe	89
PID 712 wrote to memory of 908	712	{2D375B8E-A448-41e7-A471-2B34635FAE9B}.exe	90
PID 712 wrote to memory of 5020	712	{2D375B8E-A448-41e7-A471-2B34635FAE9B}.exe	91
PID 908 wrote to memory of 5476	908	{C9D0EF6B-52A0-433b-993B-054B03787271}.exe	93
PID 908 wrote to memory of 2556	908	{C9D0EF6B-52A0-433b-993B-054B03787271}.exe	94
PID 5724 wrote to memory of 4980	5724	sihost.exe	99
PID 4980 wrote to memory of 2288	4980	explorer.exe	100

C:\Users\Admin\AppData\Local\Temp\2026-07-05_27d724b4cb7bd7357b29ae013b3c054b_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-07-05_27d724b4cb7bd7357b29ae013b3c054b_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:1552
- C:\Windows\{2D375B8E-A448-41e7-A471-2B34635FAE9B}.exe
  C:\Windows\{2D375B8E-A448-41e7-A471-2B34635FAE9B}.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:712
- - C:\Windows\{C9D0EF6B-52A0-433b-993B-054B03787271}.exe
    C:\Windows\{C9D0EF6B-52A0-433b-993B-054B03787271}.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:908
  - - C:\Windows\{4584CD6C-F790-4ea4-969F-659706DEF760}.exe
      C:\Windows\{4584CD6C-F790-4ea4-969F-659706DEF760}.exe
      4⤵
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      PID:5476
  - - C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c del C:\Windows\{C9D0E~1.EXE > nul
      4⤵
      System Location Discovery: System Language Discovery
      PID:2556
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c del C:\Windows\{2D375~1.EXE > nul
    3⤵
    - System Location Discovery: System Language Discovery
    PID:5020
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c del C:\Users\Admin\AppData\Local\Temp\2026-0~1.EXE > nul
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4128

C:\Windows\system32\sihost.exe
sihost.exe
1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:5724
- C:\Windows\explorer.exe
  explorer.exe /LOADSAVEDWINDOWS
  2⤵
  - Modifies registry class
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4980
- - C:\Windows\{4584CD6C-F790-4ea4-969F-659706DEF760}.exe
    "C:\Windows\{4584CD6C-F790-4ea4-969F-659706DEF760}.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:2288

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

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

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Downloads

{2D375B8E-A448-41e7-A471-2B34635FAE9B}.exe

Path C:\Windows\{2D375B8E-A448-41e7-A471-2B34635FAE9B}.exe
Size 79KB
SHA256 44c638de542a7cfb8aeeea55f52d73f14ac4f50f8d0a43151d14722493363ae9
MD5 6fa962c453d604a0665d2e437db3f26e
SHA1 f3b90f48b2fc876ebe11c9df25ade87265d85799
SHA512 9ab1553d76b6c50f4f22dc991631b749594bf7c9eff1d642cb3d92300db524ac519d0966ea68678bb2374526e326cc2845758b3d61c92b4860f63438af53f61d
SSDEEP 768:4vw9816vhKQLroM4/wQpWMZ3XOQ69zbjlAAX5e9zB:wEGh0oMloWMZ3izbR9XwzB
TLSH
T163834BC38E6C6483FE96297012A8DAB77D3E97C65544B9976F90FC5408A33C1EB3811D
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

{4584CD6C-F790-4ea4-969F-659706DEF760}.exe

Path C:\Windows\{4584CD6C-F790-4ea4-969F-659706DEF760}.exe
Size 79KB
SHA256 517d8ebbf95908cbd5081c55b314a048e2dccb3a90ead3b3a9cf702375a2daec
MD5 9793ad438e123e00337cca9625465b20
SHA1 ea2d8912347e43951df5c7152f9b8b81f7d7297d
SHA512 7e7952c22582b82779987fb3222b13062dd526dd9556086639617e22527569bdebad840af8af9fd4d2b677e8bb1cb55acb1d479a8e3161275006bd980398c130
SSDEEP 768:4vw9816vhKQLro94/wQpWMZ3XOQ69zbjlAAX5e9zB:wEGh0o9loWMZ3izbR9XwzB
TLSH
T1CF834BC38E6C6483FE96297012A8DAB77D3E97C65544B9976F90FC5408A33C1EB3811D
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

{C9D0EF6B-52A0-433b-993B-054B03787271}.exe

Path C:\Windows\{C9D0EF6B-52A0-433b-993B-054B03787271}.exe
Size 79KB
SHA256 a8af1d8f206ae863ed12aaca70897b3d5c991190d10336fef04761c8eb2b910b
MD5 7c952c2c2dca7f0191688e9fa84471c2
SHA1 85c6c44f751ddc533c16183f64771e6d18cdee7d
SHA512 003f166c776b16943743bd4d51a8d31905794050b9fc5bc2cc4d76f689a7a64e8c62aa910c408caec6d9fc6c9cce1bf88db0eddd8426f32e1786c8fff594ed74
SSDEEP 768:4vw9816vhKQLroJ4/wQpWMZ3XOQ69zbjlAAX5e9zB:wEGh0oJloWMZ3izbR9XwzB
TLSH
T1AE834BC38E6C6483FE96297012A8DAB77D3E97C65544B9976F90FC5408A33C1EB3811D
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