stormser | 0fde6f3f81e1a529744763f53a9a5da5f2f74d664c06d1cebfec6f480e2d9cb9

General

Target
2026-07-05_0a0a6c9725bd366e36756342e6063bf2_elex_wannacry.exe
Size 64KB
Sample260705-vwa4xset9w
SHA256 0fde6f3f81e1a529744763f53a9a5da5f2f74d664c06d1cebfec6f480e2d9cb9
MD5 0a0a6c9725bd366e36756342e6063bf2
SHA1 122aaaa96fa27a0cb4d78434d47b1b37ee28c7dc
SHA512 4906e1f415672282c30cc8a2f28d1f2522cdb12faf2b58ad61ded856f69ebc72b33ccc43787a327f262c506e547a66e692afadfbec0262b817eaf75ea36f4bb0
SSDEEP 384:vbLwOs8AHsc4sMfwhKQLroBAL4/CFsrdn0A9lsy4:vvw9816vhKQLroBAL4/wQH9lsl
TLSH
T192535C834BEE98F2F7D20131046D8AB98277ADC4961EBEAF7F50CE54007B191D83A14B
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/0x000e00000001c455-3.dat	family_stormser
behavioral2/files/0x000e00000001c456-6.dat	family_stormser
behavioral2/files/0x000e00000001c458-13.dat	family_stormser
behavioral2/files/0x000f00000001c456-18.dat	family_stormser
behavioral2/files/0x001100000001c459-23.dat	family_stormser

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\{17406182-AC5E-4ea6-847C-ADAE2AA2C29A}\stubpath = "C:\\Windows\\{17406182-AC5E-4ea6-847C-ADAE2AA2C29A}.exe"	{2F842945-A168-495f-B913-FD7D5BD8C87B}.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{259BC001-0D42-4ea1-A2C7-1C35F7E6DEA3}	{17406182-AC5E-4ea6-847C-ADAE2AA2C29A}.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{259BC001-0D42-4ea1-A2C7-1C35F7E6DEA3}\stubpath = "C:\\Windows\\{259BC001-0D42-4ea1-A2C7-1C35F7E6DEA3}.exe"	{17406182-AC5E-4ea6-847C-ADAE2AA2C29A}.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{CAD4E6D0-C00A-452f-B52A-260E0F3BB3FD}	2026-07-05_0a0a6c9725bd366e36756342e6063bf2_elex_wannacry.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{2F842945-A168-495f-B913-FD7D5BD8C87B}	{FC441CF7-504D-410e-B285-3E9E12B4B93F}.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{2F842945-A168-495f-B913-FD7D5BD8C87B}\stubpath = "C:\\Windows\\{2F842945-A168-495f-B913-FD7D5BD8C87B}.exe"	{FC441CF7-504D-410e-B285-3E9E12B4B93F}.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{CAD4E6D0-C00A-452f-B52A-260E0F3BB3FD}\stubpath = "C:\\Windows\\{CAD4E6D0-C00A-452f-B52A-260E0F3BB3FD}.exe"	2026-07-05_0a0a6c9725bd366e36756342e6063bf2_elex_wannacry.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{FC441CF7-504D-410e-B285-3E9E12B4B93F}	{CAD4E6D0-C00A-452f-B52A-260E0F3BB3FD}.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{FC441CF7-504D-410e-B285-3E9E12B4B93F}\stubpath = "C:\\Windows\\{FC441CF7-504D-410e-B285-3E9E12B4B93F}.exe"	{CAD4E6D0-C00A-452f-B52A-260E0F3BB3FD}.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{17406182-AC5E-4ea6-847C-ADAE2AA2C29A}	{2F842945-A168-495f-B913-FD7D5BD8C87B}.exe

Executes dropped EXE 6 IoCs

pid	Process
5804	{CAD4E6D0-C00A-452f-B52A-260E0F3BB3FD}.exe
3628	{FC441CF7-504D-410e-B285-3E9E12B4B93F}.exe
4628	{2F842945-A168-495f-B913-FD7D5BD8C87B}.exe
5716	{17406182-AC5E-4ea6-847C-ADAE2AA2C29A}.exe
6028	{259BC001-0D42-4ea1-A2C7-1C35F7E6DEA3}.exe
4624	{259BC001-0D42-4ea1-A2C7-1C35F7E6DEA3}.exe

Drops file in Windows directory 5 IoCs

description	ioc	Process
File created	C:\Windows\{CAD4E6D0-C00A-452f-B52A-260E0F3BB3FD}.exe	2026-07-05_0a0a6c9725bd366e36756342e6063bf2_elex_wannacry.exe
File created	C:\Windows\{FC441CF7-504D-410e-B285-3E9E12B4B93F}.exe	{CAD4E6D0-C00A-452f-B52A-260E0F3BB3FD}.exe
File created	C:\Windows\{2F842945-A168-495f-B913-FD7D5BD8C87B}.exe	{FC441CF7-504D-410e-B285-3E9E12B4B93F}.exe
File created	C:\Windows\{17406182-AC5E-4ea6-847C-ADAE2AA2C29A}.exe	{2F842945-A168-495f-B913-FD7D5BD8C87B}.exe
File created	C:\Windows\{259BC001-0D42-4ea1-A2C7-1C35F7E6DEA3}.exe	{17406182-AC5E-4ea6-847C-ADAE2AA2C29A}.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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{259BC001-0D42-4ea1-A2C7-1C35F7E6DEA3}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-07-05_0a0a6c9725bd366e36756342e6063bf2_elex_wannacry.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	{2F842945-A168-495f-B913-FD7D5BD8C87B}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{17406182-AC5E-4ea6-847C-ADAE2AA2C29A}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{CAD4E6D0-C00A-452f-B52A-260E0F3BB3FD}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{FC441CF7-504D-410e-B285-3E9E12B4B93F}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{259BC001-0D42-4ea1-A2C7-1C35F7E6DEA3}.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-1-5-21-1991999443-3181470666-3272020885-1000\{84BC9F49-FEFD-4C2D-B419-AA338FAEFEA5}	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	5080	2026-07-05_0a0a6c9725bd366e36756342e6063bf2_elex_wannacry.exe
Token: SeIncBasePriorityPrivilege	5804	{CAD4E6D0-C00A-452f-B52A-260E0F3BB3FD}.exe
Token: SeIncBasePriorityPrivilege	3628	{FC441CF7-504D-410e-B285-3E9E12B4B93F}.exe
Token: SeIncBasePriorityPrivilege	4628	{2F842945-A168-495f-B913-FD7D5BD8C87B}.exe
Token: SeIncBasePriorityPrivilege	5716	{17406182-AC5E-4ea6-847C-ADAE2AA2C29A}.exe
Token: SeShutdownPrivilege	3844	explorer.exe
Token: SeCreatePagefilePrivilege	3844	explorer.exe
Token: SeShutdownPrivilege	3844	explorer.exe
Token: SeCreatePagefilePrivilege	3844	explorer.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
1840	sihost.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 5080 wrote to memory of 5804	5080	2026-07-05_0a0a6c9725bd366e36756342e6063bf2_elex_wannacry.exe	88
PID 5080 wrote to memory of 4960	5080	2026-07-05_0a0a6c9725bd366e36756342e6063bf2_elex_wannacry.exe	89
PID 5804 wrote to memory of 3628	5804	{CAD4E6D0-C00A-452f-B52A-260E0F3BB3FD}.exe	90
PID 5804 wrote to memory of 3076	5804	{CAD4E6D0-C00A-452f-B52A-260E0F3BB3FD}.exe	91
PID 3628 wrote to memory of 4628	3628	{FC441CF7-504D-410e-B285-3E9E12B4B93F}.exe	93
PID 3628 wrote to memory of 2896	3628	{FC441CF7-504D-410e-B285-3E9E12B4B93F}.exe	94
PID 4628 wrote to memory of 5716	4628	{2F842945-A168-495f-B913-FD7D5BD8C87B}.exe	95
PID 4628 wrote to memory of 2464	4628	{2F842945-A168-495f-B913-FD7D5BD8C87B}.exe	96
PID 5716 wrote to memory of 6028	5716	{17406182-AC5E-4ea6-847C-ADAE2AA2C29A}.exe	101
PID 5716 wrote to memory of 1032	5716	{17406182-AC5E-4ea6-847C-ADAE2AA2C29A}.exe	102
PID 1840 wrote to memory of 3844	1840	sihost.exe	103
PID 3844 wrote to memory of 4624	3844	explorer.exe	104

C:\Users\Admin\AppData\Local\Temp\2026-07-05_0a0a6c9725bd366e36756342e6063bf2_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-07-05_0a0a6c9725bd366e36756342e6063bf2_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:5080
- C:\Windows\{CAD4E6D0-C00A-452f-B52A-260E0F3BB3FD}.exe
  C:\Windows\{CAD4E6D0-C00A-452f-B52A-260E0F3BB3FD}.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:5804
- - C:\Windows\{FC441CF7-504D-410e-B285-3E9E12B4B93F}.exe
    C:\Windows\{FC441CF7-504D-410e-B285-3E9E12B4B93F}.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:3628
  - - C:\Windows\{2F842945-A168-495f-B913-FD7D5BD8C87B}.exe
      C:\Windows\{2F842945-A168-495f-B913-FD7D5BD8C87B}.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:4628
    - - C:\Windows\{17406182-AC5E-4ea6-847C-ADAE2AA2C29A}.exe
        
        C:\Windows\{17406182-AC5E-4ea6-847C-ADAE2AA2C29A}.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:5716
      - C:\Windows\{259BC001-0D42-4ea1-A2C7-1C35F7E6DEA3}.exe
        
        C:\Windows\{259BC001-0D42-4ea1-A2C7-1C35F7E6DEA3}.exe
        6⤵
        Executes dropped EXE
        System Location Discovery: System Language Discovery
        
        PID:6028
      - C:\Windows\SysWOW64\cmd.exe
        
        C:\Windows\system32\cmd.exe /c del C:\Windows\{17406~1.EXE > nul
        6⤵
        System Location Discovery: System Language Discovery
        
        PID:1032
    - - C:\Windows\SysWOW64\cmd.exe
        
        C:\Windows\system32\cmd.exe /c del C:\Windows\{2F842~1.EXE > nul
        5⤵
        System Location Discovery: System Language Discovery
        
        PID:2464
  - - C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c del C:\Windows\{FC441~1.EXE > nul
      4⤵
      System Location Discovery: System Language Discovery
      PID:2896
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c del C:\Windows\{CAD4E~1.EXE > nul
    3⤵
    - System Location Discovery: System Language Discovery
    PID:3076
- 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:4960

C:\Windows\system32\sihost.exe
sihost.exe
1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:1840
- C:\Windows\explorer.exe
  explorer.exe /LOADSAVEDWINDOWS
  2⤵
  - Modifies registry class
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3844
- - C:\Windows\{259BC001-0D42-4ea1-A2C7-1C35F7E6DEA3}.exe
    "C:\Windows\{259BC001-0D42-4ea1-A2C7-1C35F7E6DEA3}.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:4624

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

{17406182-AC5E-4ea6-847C-ADAE2AA2C29A}.exe

Path C:\Windows\{17406182-AC5E-4ea6-847C-ADAE2AA2C29A}.exe
Size 64KB
SHA256 0ba1701faa90aceb54a27071aef6cd88ad5479508287f21ab573e3ec1672027e
MD5 248d066c7d5cc0431eb0ce2d53eb4abd
SHA1 9080cc9954969362894bdad067d985f38f6ac01f
SHA512 f44b286f8c2fe7967c933ce89c985f463bcbfb5299cd841f64758fb5195cd51868196397465563fe1facc801f7b2c9fcb15d93e88e7b49deb2a3e9a2db4fe834
SSDEEP 384:vbLwOs8AHsc4sMfwhKQLroR4/CFsrdn0A9lsy4:vvw9816vhKQLroR4/wQH9lsl
TLSH
T17B535D834BEE98F2F7D21131056D8A798277ADC4961EBE9F7F90CE54007B191D83A147
MD5 SHA1 SHA512 SSDEEP TLSH

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{259BC001-0D42-4ea1-A2C7-1C35F7E6DEA3}.exe

Path C:\Windows\{259BC001-0D42-4ea1-A2C7-1C35F7E6DEA3}.exe
Size 64KB
SHA256 d587b168b3234ef20a04936ada2f9f3e3f1d5c6cdb305fd7f890183fa64032ed
MD5 bb4a0974a3677128edce621286d63509
SHA1 887f1f7be731d63ce2d42391a5b7235efd2aa63b
SHA512 e3e5b4975642c3d6cb619330556e067384a10b39f5bd2c2aa5a54176fe1141e58d5aeec48263ab012569aecff4766f71982cd714b23de91571ae628e50a69cb4
SSDEEP 384:vbLwOs8AHsc4sMfwhKQLrox4/CFsrdn0A9lsy4:vvw9816vhKQLrox4/wQH9lsl
TLSH
T11D535C834BEE98F2F7D20131046D8AB98277ADC4961EBEAF7F50CE54007B191D83A14B
MD5 SHA1 SHA512 SSDEEP TLSH

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{2F842945-A168-495f-B913-FD7D5BD8C87B}.exe

Path C:\Windows\{2F842945-A168-495f-B913-FD7D5BD8C87B}.exe
Size 64KB
SHA256 7f2d8b618667e1a243d9d11eb8458f054c345afe845d535b535f07724708f126
MD5 ed669b18a4186dd5fee5a58d05248b80
SHA1 b389beb56f32896451111eb6b03e9e54230d9428
SHA512 443caa4900c3d60139861e27f3bbc7122a1d6dceb74cfcb2a453696762d77d2f8fb477c14f50f66dab41a116361174645df80f68e666301be47f360d93740782
SSDEEP 384:vbLwOs8AHsc4sMfwhKQLroR4/CFsrdn0A9lsy4:vvw9816vhKQLroR4/wQH9lsl
TLSH
T1B8535C834BEE98F2F7D21131056D8A798277ADC4961EBEAF7F90CE54007B191D83A14B
MD5 SHA1 SHA512 SSDEEP TLSH

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{CAD4E6D0-C00A-452f-B52A-260E0F3BB3FD}.exe

Path C:\Windows\{CAD4E6D0-C00A-452f-B52A-260E0F3BB3FD}.exe
Size 64KB
SHA256 dc49cb219fd7f5789534532b1b569347fc685094b420d56ee1cdeb360ca0c072
MD5 bf45d6849c6f5b9610317e68ecbde891
SHA1 ede7639162c2d2aa714f73305276e23747206e82
SHA512 5444fdcb1ef069ecf93a4a8c95d7c64e5e48e030261ada6797c49d6dbe92c18375001556729ca13337b818802eca9befd639701957706cfb7c6ee1872cd56989
SSDEEP 384:vbLwOs8AHsc4sMfwhKQLrol4/CFsrdn0A9lsy4:vvw9816vhKQLrol4/wQH9lsl
TLSH
T1EA535C834BEE98F2F7D21131046D8AB98277ADC4961EBEAF7F50CE54007B191D83A14B
MD5 SHA1 SHA512 SSDEEP TLSH

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{FC441CF7-504D-410e-B285-3E9E12B4B93F}.exe

Path C:\Windows\{FC441CF7-504D-410e-B285-3E9E12B4B93F}.exe
Size 64KB
SHA256 5a5cbba78a2a87a7f9194676a345aefeabc266e42c9459f9dfa54c004cf0789e
MD5 80a546914fdc68e85583fc787e2dc4c0
SHA1 6822e2d80195edec04abe0bf1753150f0f61eeec
SHA512 0a2dcf16d68c9b6f9a8c069e212ddac66a58433b2899c96bb808c4c39fef452ef824da8efd9efcd5592056820658c4f8cd41529f5e60df55685aab74ec4c7a22
SSDEEP 384:vbLwOs8AHsc4sMfwhKQLro14/CFsrdn0A9lsy4:vvw9816vhKQLro14/wQH9lsl
TLSH
T196535C834BEE98F2F7D20131046D8A798277ADC4961EBEAF7F50CE54007B191D83A14B
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