stormser | 6579e815034152cd5bea5997d96a6e30bf18cb7d9289aa34a7d679141567abeb

General

Target
2026-06-27_a20e40394c2ed3d6c695914684096b9a_elex_wannacry.exe
Size 76KB
Sample260629-e2tv8aes8k
SHA256 6579e815034152cd5bea5997d96a6e30bf18cb7d9289aa34a7d679141567abeb
MD5 a20e40394c2ed3d6c695914684096b9a
SHA1 6ea001e479cef0fb67ded2e0351ec42d210ffd47
SHA512 df6f4dff6107376076299da452af7b605bcb2402aaca2091fafd5c2399f1e0e953c4d8648eece5e5a449f34baea6849a564f1d625e09d9154d0def3070eb345f
SSDEEP 768:vvw9816vhKQLroXx4/wQxWMZQcpFM1FgDagXP2TyS1tl7lfqvocqcdT3WVd:nEGh0oXxlwWMZQcpmgDagIyS1loL7Wr
TLSH
T199735B02A684B5F2EBAC0134B19F0F7E963795B1C0D9682F6F634DA55862C63F431E17
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 4 IoCs

resource	yara_rule
behavioral2/files/0x000e00000001c53d-3.dat	family_stormser
behavioral2/files/0x000e00000001c53e-6.dat	family_stormser
behavioral2/files/0x000d00000001c541-13.dat	family_stormser
behavioral2/files/0x000f00000001c53e-18.dat	family_stormser

Detects Windows executables referencing non-Windows User-Agents 4 IoCs

resource	yara_rule
behavioral2/files/0x000e00000001c53d-3.dat	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
behavioral2/files/0x000e00000001c53e-6.dat	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
behavioral2/files/0x000d00000001c541-13.dat	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
behavioral2/files/0x000f00000001c53e-18.dat	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA

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\{1A07D716-8DA6-44a3-AEBE-7F8BECF4EB2F}\stubpath = "C:\\Windows\\{1A07D716-8DA6-44a3-AEBE-7F8BECF4EB2F}.exe"	{8EA72F72-0701-4ecf-882E-A1946D6F9A9F}.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{D7E68A03-339B-4016-AE1D-EF65A07ECA00}	2026-06-27_a20e40394c2ed3d6c695914684096b9a_elex_wannacry.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{D7E68A03-339B-4016-AE1D-EF65A07ECA00}\stubpath = "C:\\Windows\\{D7E68A03-339B-4016-AE1D-EF65A07ECA00}.exe"	2026-06-27_a20e40394c2ed3d6c695914684096b9a_elex_wannacry.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{F734AC71-AD43-46f7-A79B-1218CF0060C6}	{D7E68A03-339B-4016-AE1D-EF65A07ECA00}.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{F734AC71-AD43-46f7-A79B-1218CF0060C6}\stubpath = "C:\\Windows\\{F734AC71-AD43-46f7-A79B-1218CF0060C6}.exe"	{D7E68A03-339B-4016-AE1D-EF65A07ECA00}.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{8EA72F72-0701-4ecf-882E-A1946D6F9A9F}	{F734AC71-AD43-46f7-A79B-1218CF0060C6}.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{8EA72F72-0701-4ecf-882E-A1946D6F9A9F}\stubpath = "C:\\Windows\\{8EA72F72-0701-4ecf-882E-A1946D6F9A9F}.exe"	{F734AC71-AD43-46f7-A79B-1218CF0060C6}.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{1A07D716-8DA6-44a3-AEBE-7F8BECF4EB2F}	{8EA72F72-0701-4ecf-882E-A1946D6F9A9F}.exe

Executes dropped EXE 5 IoCs

pid	Process
5380	{D7E68A03-339B-4016-AE1D-EF65A07ECA00}.exe
4568	{F734AC71-AD43-46f7-A79B-1218CF0060C6}.exe
4240	{8EA72F72-0701-4ecf-882E-A1946D6F9A9F}.exe
2660	{1A07D716-8DA6-44a3-AEBE-7F8BECF4EB2F}.exe
848	{1A07D716-8DA6-44a3-AEBE-7F8BECF4EB2F}.exe

Drops file in Windows directory 4 IoCs

description	ioc	Process
File created	C:\Windows\{1A07D716-8DA6-44a3-AEBE-7F8BECF4EB2F}.exe	{8EA72F72-0701-4ecf-882E-A1946D6F9A9F}.exe
File created	C:\Windows\{D7E68A03-339B-4016-AE1D-EF65A07ECA00}.exe	2026-06-27_a20e40394c2ed3d6c695914684096b9a_elex_wannacry.exe
File created	C:\Windows\{F734AC71-AD43-46f7-A79B-1218CF0060C6}.exe	{D7E68A03-339B-4016-AE1D-EF65A07ECA00}.exe
File created	C:\Windows\{8EA72F72-0701-4ecf-882E-A1946D6F9A9F}.exe	{F734AC71-AD43-46f7-A79B-1218CF0060C6}.exe

System Location Discovery: System Language Discovery 1 TTPs 10 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	{1A07D716-8DA6-44a3-AEBE-7F8BECF4EB2F}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{1A07D716-8DA6-44a3-AEBE-7F8BECF4EB2F}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-06-27_a20e40394c2ed3d6c695914684096b9a_elex_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{8EA72F72-0701-4ecf-882E-A1946D6F9A9F}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{D7E68A03-339B-4016-AE1D-EF65A07ECA00}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{F734AC71-AD43-46f7-A79B-1218CF0060C6}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.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-1-5-21-3226024100-3888324339-2736661264-1000\{3FDAA61D-6B25-4558-AD32-925BE9C6C87D}	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 8 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	4424	2026-06-27_a20e40394c2ed3d6c695914684096b9a_elex_wannacry.exe
Token: SeIncBasePriorityPrivilege	5380	{D7E68A03-339B-4016-AE1D-EF65A07ECA00}.exe
Token: SeIncBasePriorityPrivilege	4568	{F734AC71-AD43-46f7-A79B-1218CF0060C6}.exe
Token: SeIncBasePriorityPrivilege	4240	{8EA72F72-0701-4ecf-882E-A1946D6F9A9F}.exe
Token: SeShutdownPrivilege	3092	explorer.exe
Token: SeCreatePagefilePrivilege	3092	explorer.exe
Token: SeShutdownPrivilege	3092	explorer.exe
Token: SeCreatePagefilePrivilege	3092	explorer.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
1212	sihost.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 4424 wrote to memory of 5380	4424	2026-06-27_a20e40394c2ed3d6c695914684096b9a_elex_wannacry.exe	90
PID 4424 wrote to memory of 2544	4424	2026-06-27_a20e40394c2ed3d6c695914684096b9a_elex_wannacry.exe	91
PID 5380 wrote to memory of 4568	5380	{D7E68A03-339B-4016-AE1D-EF65A07ECA00}.exe	92
PID 5380 wrote to memory of 4464	5380	{D7E68A03-339B-4016-AE1D-EF65A07ECA00}.exe	93
PID 4568 wrote to memory of 4240	4568	{F734AC71-AD43-46f7-A79B-1218CF0060C6}.exe	95
PID 4568 wrote to memory of 940	4568	{F734AC71-AD43-46f7-A79B-1218CF0060C6}.exe	96
PID 4240 wrote to memory of 2660	4240	{8EA72F72-0701-4ecf-882E-A1946D6F9A9F}.exe	97
PID 4240 wrote to memory of 2012	4240	{8EA72F72-0701-4ecf-882E-A1946D6F9A9F}.exe	98
PID 1212 wrote to memory of 3092	1212	sihost.exe	103
PID 3092 wrote to memory of 848	3092	explorer.exe	104

C:\Users\Admin\AppData\Local\Temp\2026-06-27_a20e40394c2ed3d6c695914684096b9a_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-06-27_a20e40394c2ed3d6c695914684096b9a_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:4424
- C:\Windows\{D7E68A03-339B-4016-AE1D-EF65A07ECA00}.exe
  C:\Windows\{D7E68A03-339B-4016-AE1D-EF65A07ECA00}.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:5380
- - C:\Windows\{F734AC71-AD43-46f7-A79B-1218CF0060C6}.exe
    C:\Windows\{F734AC71-AD43-46f7-A79B-1218CF0060C6}.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:4568
  - - C:\Windows\{8EA72F72-0701-4ecf-882E-A1946D6F9A9F}.exe
      C:\Windows\{8EA72F72-0701-4ecf-882E-A1946D6F9A9F}.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:4240
    - - C:\Windows\{1A07D716-8DA6-44a3-AEBE-7F8BECF4EB2F}.exe
        
        C:\Windows\{1A07D716-8DA6-44a3-AEBE-7F8BECF4EB2F}.exe
        5⤵
        Executes dropped EXE
        System Location Discovery: System Language Discovery
        
        PID:2660
    - - C:\Windows\SysWOW64\cmd.exe
        
        C:\Windows\system32\cmd.exe /c del C:\Windows\{8EA72~1.EXE > nul
        5⤵
        System Location Discovery: System Language Discovery
        
        PID:2012
  - - C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c del C:\Windows\{F734A~1.EXE > nul
      4⤵
      System Location Discovery: System Language Discovery
      PID:940
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c del C:\Windows\{D7E68~1.EXE > nul
    3⤵
    - System Location Discovery: System Language Discovery
    PID:4464
- 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:2544

C:\Windows\system32\sihost.exe
sihost.exe
1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:1212
- C:\Windows\explorer.exe
  explorer.exe /LOADSAVEDWINDOWS
  2⤵
  - Modifies registry class
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3092
- - C:\Windows\{1A07D716-8DA6-44a3-AEBE-7F8BECF4EB2F}.exe
    "C:\Windows\{1A07D716-8DA6-44a3-AEBE-7F8BECF4EB2F}.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:848

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

{1A07D716-8DA6-44a3-AEBE-7F8BECF4EB2F}.exe

Path C:\Windows\{1A07D716-8DA6-44a3-AEBE-7F8BECF4EB2F}.exe
Size 76KB
SHA256 b21249941be2a78c30ebad6f8c345b9c83c58bb197dbbb776f84b1f051a719af
MD5 60d884936051e075eb0e7500e2873a0f
SHA1 80399d6024829f8538736c6c57c5e5bb84ccffb1
SHA512 a05a8d53d8be6605c5f1a546a773befeb846a5562d080a0519be62c309c791ea5d958d594ce5fc04e1b9624482bdbff302ef301dfc906e444c893034fb519df8
SSDEEP 768:vvw9816vhKQLrojx4/wQxWMZQcpFM1FgDagXP2TyS1tl7lfqvocqcdT3WVd:nEGh0ojxlwWMZQcpmgDagIyS1loL7Wr
TLSH
T142735B02A684B5F2EBAC0134B19F0F7E963795B1C0D9682F6F634DA55862C63F431E17
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

{8EA72F72-0701-4ecf-882E-A1946D6F9A9F}.exe

Path C:\Windows\{8EA72F72-0701-4ecf-882E-A1946D6F9A9F}.exe
Size 76KB
SHA256 d9aa9a148686cd262ff1c1ed8ee792bc761b3c8277d3cf946c21dbcb385606a6
MD5 7f676252dab87e59200d4a898292b61e
SHA1 56065b94ebe6e2b3cb8cd3fe60d727c10c8c7c4d
SHA512 dace1f97c7feda934c739716256ea7e7c912058448c6be5c749d43dd733970a2f9b3fdd41f9793bb840cb1d50974316b190fe1f617ca9400ef8d02833893c252
SSDEEP 768:vvw9816vhKQLrolx4/wQxWMZQcpFM1FgDagXP2TyS1tl7lfqvocqcdT3WVd:nEGh0olxlwWMZQcpmgDagIyS1loL7Wr
TLSH
T18E735B02A684B5F2EBAC0134B19F0F7E963796B1C0D9682F6F634DA55862C63F431E17
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

{D7E68A03-339B-4016-AE1D-EF65A07ECA00}.exe

Path C:\Windows\{D7E68A03-339B-4016-AE1D-EF65A07ECA00}.exe
Size 76KB
SHA256 c50b3ce05b874204280da393b6b962691059693dac38cd2aae5b1571013d1919
MD5 7ff9adbfc8ed80d7539240e771f0b9fc
SHA1 7e9f64d6e5fb27320359a3339f5be0a1270ac8ed
SHA512 d41b4dd3d5f70e7a3415bd79e7bd3ad9af1b4da5fccc00216dac7f533ff2e3fab038891652f20aa744052339b869a68a4a94a345c7be87e4dd63fc8550ca2e58
SSDEEP 768:vvw9816vhKQLro8x4/wQxWMZQcpFM1FgDagXP2TyS1tl7lfqvocqcdT3WVd:nEGh0o8xlwWMZQcpmgDagIyS1loL7Wr
TLSH
T1DD735B02A684B5F2EBAC0134B19F0F7E963795B1C0D9682F6F634DA55862C63F431E17
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

{F734AC71-AD43-46f7-A79B-1218CF0060C6}.exe

Path C:\Windows\{F734AC71-AD43-46f7-A79B-1218CF0060C6}.exe
Size 76KB
SHA256 d6e293917e418c02a9b49a8ccd64f46d0abe2dc4830c26e5cc6f4630e71aa7db
MD5 ca4f87aadc1314af7dd729af95d180ef
SHA1 1f98be07ace0db0fac515220f0603f8e8373f375
SHA512 61cf66c01fc7c5f5c6881813611b2ee76bd813129760d58e3c4479d9e69c5a160050b495a86a83cb7973722126937171cff45693003caccd4659b5599e91b039
SSDEEP 768:vvw9816vhKQLro6x4/wQxWMZQcpFM1FgDagXP2TyS1tl7lfqvocqcdT3WVd:nEGh0o6xlwWMZQcpmgDagIyS1loL7Wr
TLSH
T12D735B02A684B5F2EBAC0134B19F0F7E963796B1C0D9682F6F634DA55862C63F431E17
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

Replay Monitor

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Downloads