stormser | a308ca9edc6ff3985f155e006d8d2176d8f0b4fc5cd5ce5bfdf128ee05be4ba7

General

Target
2026-06-30_b90437f6b4438e1092aa14d8adc33f06_elex_wannacry.exe
Size 60KB
Sample260701-dnxvaadt2p
SHA256 a308ca9edc6ff3985f155e006d8d2176d8f0b4fc5cd5ce5bfdf128ee05be4ba7
MD5 b90437f6b4438e1092aa14d8adc33f06
SHA1 2fa70d2010ad845ff42288fec6dd7bd7fd52acf1
SHA512 0db860d086894d524f9f236cef66d319432f678c974a92ea5d883451b07992f6a81a6838e70cf397f77b08a5a8a6aca3a8804ebf0f59be4fd7101b9497749db2
SSDEEP 384:vbLwOs8AHsc4sMfwhKQLroKK4/CFsrYAutg/CNl2e4WMZAj:vvw9816vhKQLrof4/wQLfwl27WMZs
TLSH
T178539D831F9A7CF2F3861071096E97BA926B49D4D29FBF9B7F50CC0D5062641E83D60A
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/0x000e00000001c47c-3.dat	family_stormser
behavioral2/files/0x000e00000001c47d-6.dat	family_stormser
behavioral2/files/0x000f00000001c47c-13.dat	family_stormser
behavioral2/files/0x000f00000001c47d-18.dat	family_stormser
behavioral2/files/0x001000000001c47c-23.dat	family_stormser

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

resource	yara_rule
behavioral2/files/0x000e00000001c47c-3.dat	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
behavioral2/files/0x000e00000001c47d-6.dat	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
behavioral2/files/0x000f00000001c47c-13.dat	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
behavioral2/files/0x000f00000001c47d-18.dat	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
behavioral2/files/0x001000000001c47c-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\{19779AF5-62C7-4104-97E9-7413382DE0E5}\stubpath = "C:\\Windows\\{19779AF5-62C7-4104-97E9-7413382DE0E5}.exe"	{4FEB9064-A89F-47ef-A4E1-F00001A330B6}.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{D2EE0C2B-1FE2-47ba-B686-C02B325D066A}	{4E602B5B-F7FD-47f3-BECD-1AF36BB62279}.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{4FEB9064-A89F-47ef-A4E1-F00001A330B6}	2026-06-30_b90437f6b4438e1092aa14d8adc33f06_elex_wannacry.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{9772AC12-18B0-47b6-8AFF-033932615EF7}	{19779AF5-62C7-4104-97E9-7413382DE0E5}.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{9772AC12-18B0-47b6-8AFF-033932615EF7}\stubpath = "C:\\Windows\\{9772AC12-18B0-47b6-8AFF-033932615EF7}.exe"	{19779AF5-62C7-4104-97E9-7413382DE0E5}.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{4E602B5B-F7FD-47f3-BECD-1AF36BB62279}	{9772AC12-18B0-47b6-8AFF-033932615EF7}.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{4E602B5B-F7FD-47f3-BECD-1AF36BB62279}\stubpath = "C:\\Windows\\{4E602B5B-F7FD-47f3-BECD-1AF36BB62279}.exe"	{9772AC12-18B0-47b6-8AFF-033932615EF7}.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{D2EE0C2B-1FE2-47ba-B686-C02B325D066A}\stubpath = "C:\\Windows\\{D2EE0C2B-1FE2-47ba-B686-C02B325D066A}.exe"	{4E602B5B-F7FD-47f3-BECD-1AF36BB62279}.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{4FEB9064-A89F-47ef-A4E1-F00001A330B6}\stubpath = "C:\\Windows\\{4FEB9064-A89F-47ef-A4E1-F00001A330B6}.exe"	2026-06-30_b90437f6b4438e1092aa14d8adc33f06_elex_wannacry.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{19779AF5-62C7-4104-97E9-7413382DE0E5}	{4FEB9064-A89F-47ef-A4E1-F00001A330B6}.exe

Executes dropped EXE 6 IoCs

pid	Process
5024	{4FEB9064-A89F-47ef-A4E1-F00001A330B6}.exe
3204	{19779AF5-62C7-4104-97E9-7413382DE0E5}.exe
4508	{9772AC12-18B0-47b6-8AFF-033932615EF7}.exe
1992	{4E602B5B-F7FD-47f3-BECD-1AF36BB62279}.exe
2696	{D2EE0C2B-1FE2-47ba-B686-C02B325D066A}.exe
6064	{D2EE0C2B-1FE2-47ba-B686-C02B325D066A}.exe

Drops file in Windows directory 5 IoCs

description	ioc	Process
File created	C:\Windows\{4FEB9064-A89F-47ef-A4E1-F00001A330B6}.exe	2026-06-30_b90437f6b4438e1092aa14d8adc33f06_elex_wannacry.exe
File created	C:\Windows\{19779AF5-62C7-4104-97E9-7413382DE0E5}.exe	{4FEB9064-A89F-47ef-A4E1-F00001A330B6}.exe
File created	C:\Windows\{9772AC12-18B0-47b6-8AFF-033932615EF7}.exe	{19779AF5-62C7-4104-97E9-7413382DE0E5}.exe
File created	C:\Windows\{4E602B5B-F7FD-47f3-BECD-1AF36BB62279}.exe	{9772AC12-18B0-47b6-8AFF-033932615EF7}.exe
File created	C:\Windows\{D2EE0C2B-1FE2-47ba-B686-C02B325D066A}.exe	{4E602B5B-F7FD-47f3-BECD-1AF36BB62279}.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	{4FEB9064-A89F-47ef-A4E1-F00001A330B6}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{19779AF5-62C7-4104-97E9-7413382DE0E5}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{9772AC12-18B0-47b6-8AFF-033932615EF7}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{D2EE0C2B-1FE2-47ba-B686-C02B325D066A}.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	{4E602B5B-F7FD-47f3-BECD-1AF36BB62279}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{D2EE0C2B-1FE2-47ba-B686-C02B325D066A}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-06-30_b90437f6b4438e1092aa14d8adc33f06_elex_wannacry.exe

Modifies registry class 3 IoCs

description	ioc	Process
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
Key created	\REGISTRY\MACHINE\Software\Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppModel\Deployment\Package\*\S-1-5-21-3704578903-1610922810-1098216751-1000\{2FFDC543-191D-4983-98AC-BC1E8AC69680}	explorer.exe

Suspicious use of AdjustPrivilegeToken 9 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	1056	2026-06-30_b90437f6b4438e1092aa14d8adc33f06_elex_wannacry.exe
Token: SeIncBasePriorityPrivilege	5024	{4FEB9064-A89F-47ef-A4E1-F00001A330B6}.exe
Token: SeIncBasePriorityPrivilege	3204	{19779AF5-62C7-4104-97E9-7413382DE0E5}.exe
Token: SeIncBasePriorityPrivilege	4508	{9772AC12-18B0-47b6-8AFF-033932615EF7}.exe
Token: SeIncBasePriorityPrivilege	1992	{4E602B5B-F7FD-47f3-BECD-1AF36BB62279}.exe
Token: SeShutdownPrivilege	3044	explorer.exe
Token: SeCreatePagefilePrivilege	3044	explorer.exe
Token: SeShutdownPrivilege	3044	explorer.exe
Token: SeCreatePagefilePrivilege	3044	explorer.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
3804	sihost.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1056 wrote to memory of 5024	1056	2026-06-30_b90437f6b4438e1092aa14d8adc33f06_elex_wannacry.exe	88
PID 1056 wrote to memory of 3400	1056	2026-06-30_b90437f6b4438e1092aa14d8adc33f06_elex_wannacry.exe	89
PID 5024 wrote to memory of 3204	5024	{4FEB9064-A89F-47ef-A4E1-F00001A330B6}.exe	90
PID 5024 wrote to memory of 2320	5024	{4FEB9064-A89F-47ef-A4E1-F00001A330B6}.exe	91
PID 3204 wrote to memory of 4508	3204	{19779AF5-62C7-4104-97E9-7413382DE0E5}.exe	92
PID 3204 wrote to memory of 4100	3204	{19779AF5-62C7-4104-97E9-7413382DE0E5}.exe	93
PID 4508 wrote to memory of 1992	4508	{9772AC12-18B0-47b6-8AFF-033932615EF7}.exe	94
PID 4508 wrote to memory of 5716	4508	{9772AC12-18B0-47b6-8AFF-033932615EF7}.exe	95
PID 1992 wrote to memory of 2696	1992	{4E602B5B-F7FD-47f3-BECD-1AF36BB62279}.exe	96
PID 1992 wrote to memory of 4728	1992	{4E602B5B-F7FD-47f3-BECD-1AF36BB62279}.exe	97
PID 3804 wrote to memory of 3044	3804	sihost.exe	102
PID 3044 wrote to memory of 6064	3044	explorer.exe	103

C:\Users\Admin\AppData\Local\Temp\2026-06-30_b90437f6b4438e1092aa14d8adc33f06_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-06-30_b90437f6b4438e1092aa14d8adc33f06_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:1056
- C:\Windows\{4FEB9064-A89F-47ef-A4E1-F00001A330B6}.exe
  C:\Windows\{4FEB9064-A89F-47ef-A4E1-F00001A330B6}.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:5024
- - C:\Windows\{19779AF5-62C7-4104-97E9-7413382DE0E5}.exe
    C:\Windows\{19779AF5-62C7-4104-97E9-7413382DE0E5}.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:3204
  - - C:\Windows\{9772AC12-18B0-47b6-8AFF-033932615EF7}.exe
      C:\Windows\{9772AC12-18B0-47b6-8AFF-033932615EF7}.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:4508
    - - C:\Windows\{4E602B5B-F7FD-47f3-BECD-1AF36BB62279}.exe
        
        C:\Windows\{4E602B5B-F7FD-47f3-BECD-1AF36BB62279}.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:1992
      - C:\Windows\{D2EE0C2B-1FE2-47ba-B686-C02B325D066A}.exe
        
        C:\Windows\{D2EE0C2B-1FE2-47ba-B686-C02B325D066A}.exe
        6⤵
        Executes dropped EXE
        System Location Discovery: System Language Discovery
        
        PID:2696
      - C:\Windows\SysWOW64\cmd.exe
        
        C:\Windows\system32\cmd.exe /c del C:\Windows\{4E602~1.EXE > nul
        6⤵
        System Location Discovery: System Language Discovery
        
        PID:4728
    - - C:\Windows\SysWOW64\cmd.exe
        
        C:\Windows\system32\cmd.exe /c del C:\Windows\{9772A~1.EXE > nul
        5⤵
        System Location Discovery: System Language Discovery
        
        PID:5716
  - - C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c del C:\Windows\{19779~1.EXE > nul
      4⤵
      System Location Discovery: System Language Discovery
      PID:4100
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c del C:\Windows\{4FEB9~1.EXE > nul
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2320
- 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:3400

C:\Windows\system32\sihost.exe
sihost.exe
1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:3804
- C:\Windows\explorer.exe
  explorer.exe /LOADSAVEDWINDOWS
  2⤵
  - Modifies registry class
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3044
- - C:\Windows\{D2EE0C2B-1FE2-47ba-B686-C02B325D066A}.exe
    "C:\Windows\{D2EE0C2B-1FE2-47ba-B686-C02B325D066A}.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:6064

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

{19779AF5-62C7-4104-97E9-7413382DE0E5}.exe

Path C:\Windows\{19779AF5-62C7-4104-97E9-7413382DE0E5}.exe
Size 60KB
SHA256 12a1b294b3f0486d58ca90b659fcffdeec9ccf8ac4fe552a8fb1279627fbb0cd
MD5 922fac69513b211d4c9000f774a8e6bd
SHA1 b1a4316afeb8091ab2a798d95e0698a2d3067042
SHA512 3b0c1b3aa20ae5f69ee9cde73113e45929bf420b6150110ca9bcf7e3257deae9bb96b22d567da852c5cc5aab73099daca12a1df7139e72a2f680620feaaaf5b8
SSDEEP 384:vbLwOs8AHsc4sMfwhKQLroKY4/CFsrYAutg/CNl2e4WMZAj:vvw9816vhKQLro54/wQLfwl27WMZs
TLSH
T11A539D831F9A7CF2F3861071096E97BA926B49C4D25EBF9B7F50CC0D5062641E83D60A
MD5 SHA1 SHA512 SSDEEP TLSH

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{4E602B5B-F7FD-47f3-BECD-1AF36BB62279}.exe

Path C:\Windows\{4E602B5B-F7FD-47f3-BECD-1AF36BB62279}.exe
Size 60KB
SHA256 4adf642baa042bdd35dd7a57f4e4c5a64d5c785feb6671fda5b3ffe17b30253b
MD5 db1de1e486c6a010c40b36183fb50e93
SHA1 3b4600d8e01a87d0fd42776a97350d7aa18660cb
SHA512 d6050ec969b7bbd8c3f779b95160b96c1aad435625fad7c60cdc99afe5637fdbae04339a1f968ee27610a318a45d8ce6faba7e3178c825efa1e7f850b661b8e8
SSDEEP 384:vbLwOs8AHsc4sMfwhKQLroKj4/CFsrYAutg/CNl2e4WMZAj:vvw9816vhKQLroO4/wQLfwl27WMZs
TLSH
T1DA539D831F9A7CF2F3861071096E97BA926B49D4D29EBF9B7F50CC0D5062641E83D60A
MD5 SHA1 SHA512 SSDEEP TLSH

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{4FEB9064-A89F-47ef-A4E1-F00001A330B6}.exe

Path C:\Windows\{4FEB9064-A89F-47ef-A4E1-F00001A330B6}.exe
Size 60KB
SHA256 890e73e1055174246e2b6d0071c9960fb04e89abe37f35fcdcb986f737204c83
MD5 424a7e93e7d34e74638cd2e85150d46a
SHA1 ac11bf68d2c07002434b4f785a89ffac099e7dac
SHA512 635f4843466221303308c5f3b35b888585e2448721d40282cf82fa160834c3fb90339562a1ba08190dc2f045c0c19735d8a5379b8d23422434d2c91a96f5a845
SSDEEP 384:vbLwOs8AHsc4sMfwhKQLroKLw4/CFsrYAutg/CNl2e4WMZAj:vvw9816vhKQLroew4/wQLfwl27WMZs
TLSH
T1A0539D831F9A7CF2F3861071092E97BA936B49D4D25EBF9B7F50CC0D5062641E83D60A
MD5 SHA1 SHA512 SSDEEP TLSH

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{9772AC12-18B0-47b6-8AFF-033932615EF7}.exe

Path C:\Windows\{9772AC12-18B0-47b6-8AFF-033932615EF7}.exe
Size 60KB
SHA256 23804ccf29c457037aebdac8cd868fb6e386c3732c7e8699195ac69dc0ea24c1
MD5 9f8db84180693e954893e3877237826c
SHA1 48a5ba4ca68ca809ea870c98ddce596a3dde9709
SHA512 453c5ccf6efe0708cbc203cd3215690e75cf0218c9fb8c1ae35b61ec2deec7ad112ef2cdb8738ba13e2fa34526d9c5e4699831d799b393cd33100ff0d44fe015
SSDEEP 384:vbLwOs8AHsc4sMfwhKQLroKG4/CFsrYAutg/CNl2e4WMZAj:vvw9816vhKQLroX4/wQLfwl27WMZs
TLSH
T1B4538D831F9A7CF2F3861071096E97BA926B49D4D25EBF9B7F90CC0D5062641E83D609
MD5 SHA1 SHA512 SSDEEP TLSH

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{D2EE0C2B-1FE2-47ba-B686-C02B325D066A}.exe

Path C:\Windows\{D2EE0C2B-1FE2-47ba-B686-C02B325D066A}.exe
Size 60KB
SHA256 145e3be61d23e46e88b3c8e7196364521c27a0bab8eeeaca88007c597fc794fe
MD5 ced6d7659ff0f3040b650d07b0e6b925
SHA1 56409d20467e12ab5ce7c11bb648b179e5ba2317
SHA512 d29762ef94da4a85362901256ea1e295288d9041d1520770a99156cb6267ab9af51fad11b61455efda246b68bad069532af0215f3a4c7dc8cc2887d3670b3b6d
SSDEEP 384:vbLwOs8AHsc4sMfwhKQLroKy4/CFsrYAutg/CNl2e4WMZAj:vvw9816vhKQLroX4/wQLfwl27WMZs
TLSH
T1AB539D831F9A7CF2F3861071097E97BA926B49C4D25EBF9B7FA0CC0D5062641E83D609
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