stormser | c0b3de0b05682bc46f5e1bfcd63d07f9c23fa7cc03c165f22b079afcf4c8984d

General

Target
2026-06-27_a08265efda43152b4c3c80b5e16ad7d7_elex_wannacry.exe
Size 60KB
Sample260629-e5ntdac15s
SHA256 c0b3de0b05682bc46f5e1bfcd63d07f9c23fa7cc03c165f22b079afcf4c8984d
MD5 a08265efda43152b4c3c80b5e16ad7d7
SHA1 7c17f548a51cc8835c640110ed0cab187127cf41
SHA512 1b56b9aaa3884e75f782de132bc4f523611becfc870116a6ba4ba23b1895e702811df3e111f4d4ab96bbda0648cc58c8fcc0588184f8cb33cf2ae98e64fa2808
SSDEEP 768:8vw9816vhKQLroC54/wQxWMZQcpFM1FgDagXP2TyS1tl7lfqvocqcdT3WVd:8EGh0oC5lwWMZQcpmgDagIyS1loL7Wr
TLSH
T1D2535B02A684B5F2EBAC0134B19F0FBE963795B1C0D9682F6F634DA55862C63F431E17
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 5 IoCs

resource	yara_rule
behavioral2/files/0x000d00000001c52e-3.dat	family_stormser
behavioral2/files/0x000d00000001c52f-6.dat	family_stormser
behavioral2/files/0x000e00000001c52e-13.dat	family_stormser
behavioral2/files/0x000e00000001c52f-18.dat	family_stormser
behavioral2/files/0x001100000001c530-23.dat	family_stormser

Detects Windows executables referencing non-Windows User-Agents 5 IoCs

resource	yara_rule
behavioral2/files/0x000d00000001c52e-3.dat	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
behavioral2/files/0x000d00000001c52f-6.dat	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
behavioral2/files/0x000e00000001c52e-13.dat	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
behavioral2/files/0x000e00000001c52f-18.dat	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
behavioral2/files/0x001100000001c530-23.dat	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA

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\{98386274-D397-48b1-892F-0C7AD4588060}\stubpath = "C:\\Windows\\{98386274-D397-48b1-892F-0C7AD4588060}.exe"	2026-06-27_a08265efda43152b4c3c80b5e16ad7d7_elex_wannacry.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{3541F74F-8DB1-4a6b-9D88-BC31C5566AA7}\stubpath = "C:\\Windows\\{3541F74F-8DB1-4a6b-9D88-BC31C5566AA7}.exe"	{98386274-D397-48b1-892F-0C7AD4588060}.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{0BB9A95F-AD60-451a-8BD3-2481082D819F}\stubpath = "C:\\Windows\\{0BB9A95F-AD60-451a-8BD3-2481082D819F}.exe"	{3541F74F-8DB1-4a6b-9D88-BC31C5566AA7}.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{50D18407-1781-44b0-A5BF-F7BA2E89BD04}\stubpath = "C:\\Windows\\{50D18407-1781-44b0-A5BF-F7BA2E89BD04}.exe"	{0BB9A95F-AD60-451a-8BD3-2481082D819F}.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{7B43985E-1184-4beb-B379-B56901565B85}	{50D18407-1781-44b0-A5BF-F7BA2E89BD04}.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{7B43985E-1184-4beb-B379-B56901565B85}\stubpath = "C:\\Windows\\{7B43985E-1184-4beb-B379-B56901565B85}.exe"	{50D18407-1781-44b0-A5BF-F7BA2E89BD04}.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{98386274-D397-48b1-892F-0C7AD4588060}	2026-06-27_a08265efda43152b4c3c80b5e16ad7d7_elex_wannacry.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{3541F74F-8DB1-4a6b-9D88-BC31C5566AA7}	{98386274-D397-48b1-892F-0C7AD4588060}.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{0BB9A95F-AD60-451a-8BD3-2481082D819F}	{3541F74F-8DB1-4a6b-9D88-BC31C5566AA7}.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{50D18407-1781-44b0-A5BF-F7BA2E89BD04}	{0BB9A95F-AD60-451a-8BD3-2481082D819F}.exe

Executes dropped EXE 6 IoCs

pid	Process
1140	{98386274-D397-48b1-892F-0C7AD4588060}.exe
1396	{3541F74F-8DB1-4a6b-9D88-BC31C5566AA7}.exe
4868	{0BB9A95F-AD60-451a-8BD3-2481082D819F}.exe
4356	{50D18407-1781-44b0-A5BF-F7BA2E89BD04}.exe
1816	{7B43985E-1184-4beb-B379-B56901565B85}.exe
260	{7B43985E-1184-4beb-B379-B56901565B85}.exe

Drops file in Windows directory 5 IoCs

description	ioc	Process
File created	C:\Windows\{98386274-D397-48b1-892F-0C7AD4588060}.exe	2026-06-27_a08265efda43152b4c3c80b5e16ad7d7_elex_wannacry.exe
File created	C:\Windows\{3541F74F-8DB1-4a6b-9D88-BC31C5566AA7}.exe	{98386274-D397-48b1-892F-0C7AD4588060}.exe
File created	C:\Windows\{0BB9A95F-AD60-451a-8BD3-2481082D819F}.exe	{3541F74F-8DB1-4a6b-9D88-BC31C5566AA7}.exe
File created	C:\Windows\{50D18407-1781-44b0-A5BF-F7BA2E89BD04}.exe	{0BB9A95F-AD60-451a-8BD3-2481082D819F}.exe
File created	C:\Windows\{7B43985E-1184-4beb-B379-B56901565B85}.exe	{50D18407-1781-44b0-A5BF-F7BA2E89BD04}.exe

System Location Discovery: System Language Discovery 1 TTPs 12 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	2026-06-27_a08265efda43152b4c3c80b5e16ad7d7_elex_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{98386274-D397-48b1-892F-0C7AD4588060}.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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{50D18407-1781-44b0-A5BF-F7BA2E89BD04}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{7B43985E-1184-4beb-B379-B56901565B85}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{3541F74F-8DB1-4a6b-9D88-BC31C5566AA7}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{0BB9A95F-AD60-451a-8BD3-2481082D819F}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{7B43985E-1184-4beb-B379-B56901565B85}.exe

Modifies registry class 3 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{B4BFCC3A-DB2C-424C-B029-7FE99A87C641}\Instance\	explorer.exe
Key created	\REGISTRY\MACHINE\Software\Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppModel\Deployment\Package\*\S-1-5-21-487906980-2895880840-1957110281-1000\{87D923AE-61C1-4757-8FAB-34EDB332E34F}	explorer.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{A8CDFF1C-4878-43be-B5FD-F8091C1C60D0}\Instance\	explorer.exe

Suspicious use of AdjustPrivilegeToken 9 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	5552	2026-06-27_a08265efda43152b4c3c80b5e16ad7d7_elex_wannacry.exe
Token: SeIncBasePriorityPrivilege	1140	{98386274-D397-48b1-892F-0C7AD4588060}.exe
Token: SeIncBasePriorityPrivilege	1396	{3541F74F-8DB1-4a6b-9D88-BC31C5566AA7}.exe
Token: SeIncBasePriorityPrivilege	4868	{0BB9A95F-AD60-451a-8BD3-2481082D819F}.exe
Token: SeIncBasePriorityPrivilege	4356	{50D18407-1781-44b0-A5BF-F7BA2E89BD04}.exe
Token: SeShutdownPrivilege	5772	explorer.exe
Token: SeCreatePagefilePrivilege	5772	explorer.exe
Token: SeShutdownPrivilege	5772	explorer.exe
Token: SeCreatePagefilePrivilege	5772	explorer.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
5576	sihost.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 5552 wrote to memory of 1140	5552	2026-06-27_a08265efda43152b4c3c80b5e16ad7d7_elex_wannacry.exe	89
PID 5552 wrote to memory of 5048	5552	2026-06-27_a08265efda43152b4c3c80b5e16ad7d7_elex_wannacry.exe	90
PID 1140 wrote to memory of 1396	1140	{98386274-D397-48b1-892F-0C7AD4588060}.exe	91
PID 1140 wrote to memory of 1124	1140	{98386274-D397-48b1-892F-0C7AD4588060}.exe	92
PID 1396 wrote to memory of 4868	1396	{3541F74F-8DB1-4a6b-9D88-BC31C5566AA7}.exe	93
PID 1396 wrote to memory of 4548	1396	{3541F74F-8DB1-4a6b-9D88-BC31C5566AA7}.exe	94
PID 4868 wrote to memory of 4356	4868	{0BB9A95F-AD60-451a-8BD3-2481082D819F}.exe	95
PID 4868 wrote to memory of 956	4868	{0BB9A95F-AD60-451a-8BD3-2481082D819F}.exe	96
PID 4356 wrote to memory of 1816	4356	{50D18407-1781-44b0-A5BF-F7BA2E89BD04}.exe	101
PID 4356 wrote to memory of 2808	4356	{50D18407-1781-44b0-A5BF-F7BA2E89BD04}.exe	102
PID 5576 wrote to memory of 5772	5576	sihost.exe	103
PID 5772 wrote to memory of 260	5772	explorer.exe	104

C:\Users\Admin\AppData\Local\Temp\2026-06-27_a08265efda43152b4c3c80b5e16ad7d7_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-06-27_a08265efda43152b4c3c80b5e16ad7d7_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:5552
- C:\Windows\{98386274-D397-48b1-892F-0C7AD4588060}.exe
  C:\Windows\{98386274-D397-48b1-892F-0C7AD4588060}.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:1140
- - C:\Windows\{3541F74F-8DB1-4a6b-9D88-BC31C5566AA7}.exe
    C:\Windows\{3541F74F-8DB1-4a6b-9D88-BC31C5566AA7}.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:1396
  - - C:\Windows\{0BB9A95F-AD60-451a-8BD3-2481082D819F}.exe
      C:\Windows\{0BB9A95F-AD60-451a-8BD3-2481082D819F}.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:4868
    - - C:\Windows\{50D18407-1781-44b0-A5BF-F7BA2E89BD04}.exe
        
        C:\Windows\{50D18407-1781-44b0-A5BF-F7BA2E89BD04}.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:4356
      - C:\Windows\{7B43985E-1184-4beb-B379-B56901565B85}.exe
        
        C:\Windows\{7B43985E-1184-4beb-B379-B56901565B85}.exe
        6⤵
        Executes dropped EXE
        System Location Discovery: System Language Discovery
        
        PID:1816
      - C:\Windows\SysWOW64\cmd.exe
        
        C:\Windows\system32\cmd.exe /c del C:\Windows\{50D18~1.EXE > nul
        6⤵
        System Location Discovery: System Language Discovery
        
        PID:2808
    - - C:\Windows\SysWOW64\cmd.exe
        
        C:\Windows\system32\cmd.exe /c del C:\Windows\{0BB9A~1.EXE > nul
        5⤵
        System Location Discovery: System Language Discovery
        
        PID:956
  - - C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c del C:\Windows\{3541F~1.EXE > nul
      4⤵
      System Location Discovery: System Language Discovery
      PID:4548
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c del C:\Windows\{98386~1.EXE > nul
    3⤵
    - System Location Discovery: System Language Discovery
    PID:1124
- 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:5048

C:\Windows\system32\sihost.exe
sihost.exe
1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:5576
- C:\Windows\explorer.exe
  explorer.exe /LOADSAVEDWINDOWS
  2⤵
  - Modifies registry class
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:5772
- - C:\Windows\{7B43985E-1184-4beb-B379-B56901565B85}.exe
    "C:\Windows\{7B43985E-1184-4beb-B379-B56901565B85}.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:260

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

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Downloads

{0BB9A95F-AD60-451a-8BD3-2481082D819F}.exe

Path C:\Windows\{0BB9A95F-AD60-451a-8BD3-2481082D819F}.exe
Size 60KB
SHA256 1b3bdfd377f21633a055f7ee84f1fdffff63b380865c0ae9868d0e4a47f08199
MD5 edb29d96ee94e6629ad404f206793086
SHA1 99ed3b3dc88bcb2c91714b92b28d57f4cb3096c5
SHA512 2aa283b708350776043e859817b462cf0db554f01905c9941f582a4e8024860dc16d33a8e31001beaaad37b4dc8ada4eafbee4549619a1d55c6c8681b98c7318
SSDEEP 768:8vw9816vhKQLroCD4/wQxWMZQcpFM1FgDagXP2TyS1tl7lfqvocqcdT3WVd:8EGh0oCDlwWMZQcpmgDagIyS1loL7Wr
TLSH
T1F5535B02A684B5F2EBAC0134B19F0FBE963795B1C0D9682F6F634DA55862C63F431E17
MD5 SHA1 SHA512 SSDEEP TLSH

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{3541F74F-8DB1-4a6b-9D88-BC31C5566AA7}.exe

Path C:\Windows\{3541F74F-8DB1-4a6b-9D88-BC31C5566AA7}.exe
Size 60KB
SHA256 8451c6079aecec0f297ac8404b62327a5c99d717519cf4016123f2e3343d3182
MD5 2589dfc82ce2313ce1e13111fa9f2939
SHA1 23f5c0f0d7e757cb8c76f5a9dd5e81ba4e8a0c87
SHA512 b912a37510187f0d017b6c9666fe76d4d1bf003bf5e0d0a6ac82dce2d9f4f3ae122f5da5e6f22052b1fe54710b8052e5f19ff19f8c6ec38cb19805c7ca574302
SSDEEP 768:8vw9816vhKQLroCL4/wQxWMZQcpFM1FgDagXP2TyS1tl7lfqvocqcdT3WVd:8EGh0oCLlwWMZQcpmgDagIyS1loL7Wr
TLSH
T1DB535B02A684B5F2EBAC0134B19F0FBE963795B1C0D9682F6F634DA55862C63F431E17
MD5 SHA1 SHA512 SSDEEP TLSH

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{50D18407-1781-44b0-A5BF-F7BA2E89BD04}.exe

Path C:\Windows\{50D18407-1781-44b0-A5BF-F7BA2E89BD04}.exe
Size 60KB
SHA256 5ac132e0a34103c1ab181005524ad471347634b45b033f86174d52a4cd780b61
MD5 318a70e8425343432f2bffa16dd76a7a
SHA1 7e44a0208b02d81d23ab54237f963feee522eaf4
SHA512 49d19725098fb60652ec5fdb4251a39acfa45520f494298bc6d2a879cbb8eb10725a0ed829b3f863b5246d31d2f87c535856b2d7f6855501d231a937b5105e09
SSDEEP 768:8vw9816vhKQLroCD4/wQxWMZQcpFM1FgDagXP2TyS1tl7lfqvocqcdT3WVd:8EGh0oCDlwWMZQcpmgDagIyS1loL7Wr
TLSH
T1FA535B02A684B5F2EBAC0134B19F0F7E963795B1C0D9682F6F634DA55462C63F431E17
MD5 SHA1 SHA512 SSDEEP TLSH

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{7B43985E-1184-4beb-B379-B56901565B85}.exe

Path C:\Windows\{7B43985E-1184-4beb-B379-B56901565B85}.exe
Size 60KB
SHA256 a46a2f342ef8583e4983ba43675050da89800ccdfc9c593669fc1c49a4703cbf
MD5 206614d089005e93d55e75ac1278b03e
SHA1 5dcd22d71e6081783df6982606c781a9c5c29f7d
SHA512 b4cf51d7e003776d4622fe5bb262d09afe894d265c6dd8eba82688267986c2630988c9a280f6e9b9f12c3fea17430818ce111f4f454de4c0c9f1c9033a1dc18a
SSDEEP 768:8vw9816vhKQLroCk4/wQxWMZQcpFM1FgDagXP2TyS1tl7lfqvocqcdT3WVd:8EGh0oCklwWMZQcpmgDagIyS1loL7Wr
TLSH
T15D535B02A684B5F2EBAC0134B19F0FBE963795B1C0D9682F6F634DA55862C63F431E17
MD5 SHA1 SHA512 SSDEEP TLSH

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{98386274-D397-48b1-892F-0C7AD4588060}.exe

Path C:\Windows\{98386274-D397-48b1-892F-0C7AD4588060}.exe
Size 60KB
SHA256 c919fc14c539aa65914b43dcf4f09c33b6358e305e0e9b7071e44ea9427e380e
MD5 32649e57b0244686598823d63106370c
SHA1 e675f0b43699a91e2c00f144b20acbc3233db4b2
SHA512 c2c375f6bf47abf8ef57d9faf3ebedd0977084a46b18188c1ef8d77fe9b0cd35c714bba5a3adec4dfa08461717b81ae873d457641e514339a9072d7484d46f94
SSDEEP 768:8vw9816vhKQLroCb4/wQxWMZQcpFM1FgDagXP2TyS1tl7lfqvocqcdT3WVd:8EGh0oCblwWMZQcpmgDagIyS1loL7Wr
TLSH
T10E535B02A684B5F2EBAC0134B19F0F7E963795B1C0D9682F6F634DA55862C63F431E17
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