stormser | 927d3aab604ec63bd29b61829db69166774c910bc50c057c0eaecff6087d3894

General

Target
2026-07-09_bdbf9b3ba8a46eeb39c57f3cd2fdffe9_elex_wannacry.exe
Size 90KB
Sample260709-pewfmsaz51
SHA256 927d3aab604ec63bd29b61829db69166774c910bc50c057c0eaecff6087d3894
MD5 bdbf9b3ba8a46eeb39c57f3cd2fdffe9
SHA1 89ba559c8a6915ab2adb9e775b6423c417e67b36
SHA512 1939da8c5b8720a123a8ad470668c03fe84d2d4f51723bde7f95c667be651db454905b4b309c2df87fca9d5036886cafd3a2ce2fe2e1dc54fe1b145f61705422
SSDEEP 768:Qvw9816vhKQLroM4/wQRNrfrunMxVFA3b7glw6:YEGh0oMl2unMxVS3Hgl
TLSH
T1A093C53D5DDA103BE2B7D6B585F126E3FE66B983360A0D0E05D243428C23B53AD86C1D
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/0x000e00000001c4de-3.dat	family_stormser
behavioral2/files/0x000e00000001c4df-6.dat	family_stormser
behavioral2/files/0x000e00000001c4e1-13.dat	family_stormser
behavioral2/files/0x000f00000001c4df-19.dat	family_stormser

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\{47273809-699D-492e-AF31-0B8A186DDCC6}\stubpath = "C:\\Windows\\{47273809-699D-492e-AF31-0B8A186DDCC6}.exe"	{14031AE1-BCBE-423f-93F5-AA898FC7689F}.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{A47EEA26-6C55-45f7-918E-DEE2AADBD23A}	{47273809-699D-492e-AF31-0B8A186DDCC6}.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{A47EEA26-6C55-45f7-918E-DEE2AADBD23A}\stubpath = "C:\\Windows\\{A47EEA26-6C55-45f7-918E-DEE2AADBD23A}.exe"	{47273809-699D-492e-AF31-0B8A186DDCC6}.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{14BFCA15-7C7D-466f-A096-F88D66833904}	2026-07-09_bdbf9b3ba8a46eeb39c57f3cd2fdffe9_elex_wannacry.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{14BFCA15-7C7D-466f-A096-F88D66833904}\stubpath = "C:\\Windows\\{14BFCA15-7C7D-466f-A096-F88D66833904}.exe"	2026-07-09_bdbf9b3ba8a46eeb39c57f3cd2fdffe9_elex_wannacry.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{14031AE1-BCBE-423f-93F5-AA898FC7689F}	{14BFCA15-7C7D-466f-A096-F88D66833904}.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{14031AE1-BCBE-423f-93F5-AA898FC7689F}\stubpath = "C:\\Windows\\{14031AE1-BCBE-423f-93F5-AA898FC7689F}.exe"	{14BFCA15-7C7D-466f-A096-F88D66833904}.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{47273809-699D-492e-AF31-0B8A186DDCC6}	{14031AE1-BCBE-423f-93F5-AA898FC7689F}.exe

Executes dropped EXE 5 IoCs

pid	Process
5756	{14BFCA15-7C7D-466f-A096-F88D66833904}.exe
2388	{14031AE1-BCBE-423f-93F5-AA898FC7689F}.exe
5704	{47273809-699D-492e-AF31-0B8A186DDCC6}.exe
4312	{A47EEA26-6C55-45f7-918E-DEE2AADBD23A}.exe
264	{A47EEA26-6C55-45f7-918E-DEE2AADBD23A}.exe

Drops file in Windows directory 4 IoCs

description	ioc	Process
File created	C:\Windows\{A47EEA26-6C55-45f7-918E-DEE2AADBD23A}.exe	{47273809-699D-492e-AF31-0B8A186DDCC6}.exe
File created	C:\Windows\{14BFCA15-7C7D-466f-A096-F88D66833904}.exe	2026-07-09_bdbf9b3ba8a46eeb39c57f3cd2fdffe9_elex_wannacry.exe
File created	C:\Windows\{14031AE1-BCBE-423f-93F5-AA898FC7689F}.exe	{14BFCA15-7C7D-466f-A096-F88D66833904}.exe
File created	C:\Windows\{47273809-699D-492e-AF31-0B8A186DDCC6}.exe	{14031AE1-BCBE-423f-93F5-AA898FC7689F}.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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{47273809-699D-492e-AF31-0B8A186DDCC6}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-07-09_bdbf9b3ba8a46eeb39c57f3cd2fdffe9_elex_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{14BFCA15-7C7D-466f-A096-F88D66833904}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{14031AE1-BCBE-423f-93F5-AA898FC7689F}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{A47EEA26-6C55-45f7-918E-DEE2AADBD23A}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{A47EEA26-6C55-45f7-918E-DEE2AADBD23A}.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-1-5-21-3575702013-381963388-2545377694-1000\{AAC17D56-516C-4914-86A4-1326824C8AF2}	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	5968	2026-07-09_bdbf9b3ba8a46eeb39c57f3cd2fdffe9_elex_wannacry.exe
Token: SeIncBasePriorityPrivilege	5756	{14BFCA15-7C7D-466f-A096-F88D66833904}.exe
Token: SeIncBasePriorityPrivilege	2388	{14031AE1-BCBE-423f-93F5-AA898FC7689F}.exe
Token: SeIncBasePriorityPrivilege	5704	{47273809-699D-492e-AF31-0B8A186DDCC6}.exe
Token: SeShutdownPrivilege	2036	explorer.exe
Token: SeCreatePagefilePrivilege	2036	explorer.exe
Token: SeShutdownPrivilege	2036	explorer.exe
Token: SeCreatePagefilePrivilege	2036	explorer.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
6132	sihost.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 5968 wrote to memory of 5756	5968	2026-07-09_bdbf9b3ba8a46eeb39c57f3cd2fdffe9_elex_wannacry.exe	88
PID 5968 wrote to memory of 5668	5968	2026-07-09_bdbf9b3ba8a46eeb39c57f3cd2fdffe9_elex_wannacry.exe	89
PID 5756 wrote to memory of 2388	5756	{14BFCA15-7C7D-466f-A096-F88D66833904}.exe	90
PID 5756 wrote to memory of 1364	5756	{14BFCA15-7C7D-466f-A096-F88D66833904}.exe	91
PID 2388 wrote to memory of 5704	2388	{14031AE1-BCBE-423f-93F5-AA898FC7689F}.exe	93
PID 2388 wrote to memory of 1648	2388	{14031AE1-BCBE-423f-93F5-AA898FC7689F}.exe	94
PID 5704 wrote to memory of 4312	5704	{47273809-699D-492e-AF31-0B8A186DDCC6}.exe	95
PID 5704 wrote to memory of 5636	5704	{47273809-699D-492e-AF31-0B8A186DDCC6}.exe	96
PID 6132 wrote to memory of 2036	6132	sihost.exe	101
PID 2036 wrote to memory of 264	2036	explorer.exe	102

C:\Users\Admin\AppData\Local\Temp\2026-07-09_bdbf9b3ba8a46eeb39c57f3cd2fdffe9_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-07-09_bdbf9b3ba8a46eeb39c57f3cd2fdffe9_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:5968
- C:\Windows\{14BFCA15-7C7D-466f-A096-F88D66833904}.exe
  C:\Windows\{14BFCA15-7C7D-466f-A096-F88D66833904}.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:5756
- - C:\Windows\{14031AE1-BCBE-423f-93F5-AA898FC7689F}.exe
    C:\Windows\{14031AE1-BCBE-423f-93F5-AA898FC7689F}.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:2388
  - - C:\Windows\{47273809-699D-492e-AF31-0B8A186DDCC6}.exe
      C:\Windows\{47273809-699D-492e-AF31-0B8A186DDCC6}.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:5704
    - - C:\Windows\{A47EEA26-6C55-45f7-918E-DEE2AADBD23A}.exe
        
        C:\Windows\{A47EEA26-6C55-45f7-918E-DEE2AADBD23A}.exe
        5⤵
        Executes dropped EXE
        System Location Discovery: System Language Discovery
        
        PID:4312
    - - C:\Windows\SysWOW64\cmd.exe
        
        C:\Windows\system32\cmd.exe /c del C:\Windows\{47273~1.EXE > nul
        5⤵
        System Location Discovery: System Language Discovery
        
        PID:5636
  - - C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c del C:\Windows\{14031~1.EXE > nul
      4⤵
      System Location Discovery: System Language Discovery
      PID:1648
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c del C:\Windows\{14BFC~1.EXE > nul
    3⤵
    - System Location Discovery: System Language Discovery
    PID:1364
- 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:5668

C:\Windows\system32\sihost.exe
sihost.exe
1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:6132
- C:\Windows\explorer.exe
  explorer.exe /LOADSAVEDWINDOWS
  2⤵
  - Modifies registry class
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2036
- - C:\Windows\{A47EEA26-6C55-45f7-918E-DEE2AADBD23A}.exe
    "C:\Windows\{A47EEA26-6C55-45f7-918E-DEE2AADBD23A}.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:264

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

{14031AE1-BCBE-423f-93F5-AA898FC7689F}.exe

Path C:\Windows\{14031AE1-BCBE-423f-93F5-AA898FC7689F}.exe
Size 90KB
SHA256 54915860d9eb5bb5e963dce0ee836fec14fcf253fb748d4003a07e92510892ad
MD5 1b34966da141f4fc06992f60f46184c9
SHA1 840abbc0c381f5fda527ad3d6aaf38d1508ec6df
SHA512 9be96783a3625adf74bf3f4e52597ca5f1faa8652856b47ead03aaea50e744f0ddeead2dc59bd6930e676f367c55190467aeed1c9b8ec9145cfc4ee63707b35e
SSDEEP 768:Qvw9816vhKQLroc4/wQRNrfrunMxVFA3b7glw6:YEGh0ocl2unMxVS3Hgl
TLSH
T15B93C53D5DDA103BE2B7D6B585F126E3FE66B9833A094D0E05D243428C23B53AD8AC1D
MD5 SHA1 SHA512 SSDEEP TLSH

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{14BFCA15-7C7D-466f-A096-F88D66833904}.exe

Path C:\Windows\{14BFCA15-7C7D-466f-A096-F88D66833904}.exe
Size 90KB
SHA256 77e3524bad19609b4853396f0f03e722e04913f7af563280a3767e5dac471c60
MD5 3c8617656a4a11a1f58c0ace99f4bb69
SHA1 2c7a40df4657d5ae267a93d81fd8b4aace4d1839
SHA512 dae6faf1d1692c3e6d05c415ccc680ab9fe303096085bbc9803287af8f5b067c483760a2655953fa4a8d34c9615408a1b9561a96598d50d9726ac040e54150fe
SSDEEP 768:Qvw9816vhKQLroD4/wQRNrfrunMxVFA3b7glw6:YEGh0oDl2unMxVS3Hgl
TLSH
T1B693C53D5DDA103BE2B7D6B585F126E3FE66B9833A095D0E05D243428C23B53AD8AC1D
MD5 SHA1 SHA512 SSDEEP TLSH

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{47273809-699D-492e-AF31-0B8A186DDCC6}.exe

Path C:\Windows\{47273809-699D-492e-AF31-0B8A186DDCC6}.exe
Size 90KB
SHA256 c726ed3cdeccca6eb65f68a9bb9240deb21e99776f3bde92c6c2dd87a94c5176
MD5 25153fa26605168c57576f78592e491b
SHA1 d99470b75262cf7c52a18ec4033aa74dd628cd99
SHA512 b12b2b0b8e01a0cee0d1c22b74ab591a5d15c7632592dd89f29fef0c284ffe8edf4a0c5ac6a0e899bb28778c86e9d1a945929284a9fc7d07a9db813857ecd27b
SSDEEP 768:Qvw9816vhKQLroP4/wQRNrfrunMxVFA3b7glw6:YEGh0oPl2unMxVS3Hgl
TLSH
T1C993C53D5DDA103BE2B7D6B585F126E3FE66B98336095D0E05D243428C23B53AD86C1D
MD5 SHA1 SHA512 SSDEEP TLSH

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{A47EEA26-6C55-45f7-918E-DEE2AADBD23A}.exe

Path C:\Windows\{A47EEA26-6C55-45f7-918E-DEE2AADBD23A}.exe
Size 90KB
SHA256 617598e8d4eb0bcf357891c40188a58d51150d0cdd16f84e9cf04830a62fd97a
MD5 e9c413b450f81e8d4c6f531c23376999
SHA1 0556a71730fcf4a582d40373fe147397ea611a4d
SHA512 a8320aff3ccb47b7b54af0b723d9efd15b1fad39d564012fc8a5728e51206ea6233b1a30b524c02a08dbe576f0b2fce76c54820a309cc85b59aec6af7f4a58ac
SSDEEP 768:Qvw9816vhKQLroB4/wQRNrfrunMxVFA3b7glw6:YEGh0oBl2unMxVS3Hgl
TLSH
T1F093C53D5DDA103BE2B7D6B585F126E3FE66B9833A095D0E05D243428C23B53AD86C1D
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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