stormser | c5ee1d29bb998639a95599912c2ffb22cb165b72102868a6190088d9f7a85c5f

General

Target
2026-07-08_affa6d0f795b91975e923b12a2e051b7_elex_wannacry.exe
Size 88KB
Sample260708-vm9k5ac14k
SHA256 c5ee1d29bb998639a95599912c2ffb22cb165b72102868a6190088d9f7a85c5f
MD5 affa6d0f795b91975e923b12a2e051b7
SHA1 3c6932d4b814cda8498f8d46ee1fee3ddf0e17fa
SHA512 4837c8e90264f27eef5c6e886d9d5400bfeb527beeed3b2c7b64c248f1660d05f84f084db0bf42f8fd98344d83a807d8ec41faea0cf80341983f1aca1e353a0c
SSDEEP 768:Qvw9816vhKQLrou4/wQRNrfrunMxVFA3b7gln:YEGh0oul2unMxVS3Hg1
TLSH
T1D693A23D5DDA1037E277D6B585F126E3FE66BA83360A1D0E469343428D23B53AD8AC1C
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 1 IoCs

resource	yara_rule
behavioral2/files/0x000d00000001c5c9-3.dat	family_stormser

Boot or Logon Autostart Execution: Active Setup 2 TTPs 2 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
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{DA0415CA-7DC7-4597-855A-18B2CEA75F3D}	2026-07-08_affa6d0f795b91975e923b12a2e051b7_elex_wannacry.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{DA0415CA-7DC7-4597-855A-18B2CEA75F3D}\stubpath = "C:\\Windows\\{DA0415CA-7DC7-4597-855A-18B2CEA75F3D}.exe"	2026-07-08_affa6d0f795b91975e923b12a2e051b7_elex_wannacry.exe

Executes dropped EXE 2 IoCs

pid	Process
2452	{DA0415CA-7DC7-4597-855A-18B2CEA75F3D}.exe
6128	{DA0415CA-7DC7-4597-855A-18B2CEA75F3D}.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\Windows\{DA0415CA-7DC7-4597-855A-18B2CEA75F3D}.exe	2026-07-08_affa6d0f795b91975e923b12a2e051b7_elex_wannacry.exe

System Location Discovery: System Language Discovery 1 TTPs 4 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	{DA0415CA-7DC7-4597-855A-18B2CEA75F3D}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{DA0415CA-7DC7-4597-855A-18B2CEA75F3D}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-07-08_affa6d0f795b91975e923b12a2e051b7_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-1-5-21-2049790993-2338060321-149346055-1000\{F03FC90B-4751-4645-A465-83C5557D75B3}	explorer.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	5984	2026-07-08_affa6d0f795b91975e923b12a2e051b7_elex_wannacry.exe
Token: SeShutdownPrivilege	5912	explorer.exe
Token: SeCreatePagefilePrivilege	5912	explorer.exe
Token: SeShutdownPrivilege	5912	explorer.exe
Token: SeCreatePagefilePrivilege	5912	explorer.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
5340	sihost.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 5984 wrote to memory of 2452	5984	2026-07-08_affa6d0f795b91975e923b12a2e051b7_elex_wannacry.exe	88
PID 5984 wrote to memory of 5156	5984	2026-07-08_affa6d0f795b91975e923b12a2e051b7_elex_wannacry.exe	89
PID 5340 wrote to memory of 5912	5340	sihost.exe	94
PID 5912 wrote to memory of 6128	5912	explorer.exe	95

C:\Users\Admin\AppData\Local\Temp\2026-07-08_affa6d0f795b91975e923b12a2e051b7_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-07-08_affa6d0f795b91975e923b12a2e051b7_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:5984
- C:\Windows\{DA0415CA-7DC7-4597-855A-18B2CEA75F3D}.exe
  C:\Windows\{DA0415CA-7DC7-4597-855A-18B2CEA75F3D}.exe
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:2452
- 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:5156

C:\Windows\system32\sihost.exe
sihost.exe
1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:5340
- C:\Windows\explorer.exe
  explorer.exe /LOADSAVEDWINDOWS
  2⤵
  - Modifies registry class
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:5912
- - C:\Windows\{DA0415CA-7DC7-4597-855A-18B2CEA75F3D}.exe
    "C:\Windows\{DA0415CA-7DC7-4597-855A-18B2CEA75F3D}.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:6128

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

{DA0415CA-7DC7-4597-855A-18B2CEA75F3D}.exe

Path C:\Windows\{DA0415CA-7DC7-4597-855A-18B2CEA75F3D}.exe
Size 88KB
SHA256 475e01404a3f68bb8715ac9ff85b4e19b1c6b24cb83a1413fb5daeb78f273132
MD5 9484f82b8e07b07b963838a64dba6cfc
SHA1 6723e1ce2f0996277d14898eb88fc75fd78c7dca
SHA512 1fc41f8e33433ff0765159fc51654260826a36a184e8dbed047730c33dfa4bb9d877273240f8c5c893c197788172e01f7d3f7146924b9099c3c7c7db900b9f39
SSDEEP 768:Qvw9816vhKQLro34/wQRNrfrunMxVFA3b7gln:YEGh0o3l2unMxVS3Hg1
TLSH
T1CC93A23D9DDA1037E277D6B585F126E3FE66B983360A1D0E469343428D23B53AD8AC1C
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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