stormser | 7af3a11a49b1ae55ac05bc274e5f33d8d18b4e907a94a2de36157d382ee348b1

General

Target
2026-07-08_601dcb9ccbc062531db735b2bc874a58_elex_wannacry.exe
Size 372KB
Sample260708-we39tae121
SHA256 7af3a11a49b1ae55ac05bc274e5f33d8d18b4e907a94a2de36157d382ee348b1
MD5 601dcb9ccbc062531db735b2bc874a58
SHA1 c204aaba82793aa1c075d57fd70b746c40f54b05
SHA512 49a6fb69f19b93ea9368da494a6ffcf744851042b84df95908070ece2acc1bf7f80b25e1eaf1f90ed9d2e60e66eba33011cfdee7a762bbcc53cc62dc833b2fa2
SSDEEP 384:K7bLwOs8AHsc4sMfwhKQLronx4/CFsrdb:Gvw9816vhKQLronx4/wQR
TLSH
T1878409835BDE9CF2FB91113009798AB9927B99C4910EBEDFBF90CD150037252D53A10B
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 3 IoCs

resource	yara_rule
behavioral2/files/0x000e00000001c538-3.dat	family_stormser
behavioral2/files/0x000e00000001c539-6.dat	family_stormser
behavioral2/files/0x000e00000001c53b-13.dat	family_stormser

Boot or Logon Autostart Execution: Active Setup 2 TTPs 6 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\{F8F4D707-B32D-4786-A9DC-097EF797B0B7}\stubpath = "C:\\Windows\\{F8F4D707-B32D-4786-A9DC-097EF797B0B7}.exe"	{C4B7A4B9-6B3D-45bc-9053-CBC8BEAFBA1D}.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{1E7A23CB-BABF-45aa-B6B4-EEC87DB6A1AC}	2026-07-08_601dcb9ccbc062531db735b2bc874a58_elex_wannacry.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{1E7A23CB-BABF-45aa-B6B4-EEC87DB6A1AC}\stubpath = "C:\\Windows\\{1E7A23CB-BABF-45aa-B6B4-EEC87DB6A1AC}.exe"	2026-07-08_601dcb9ccbc062531db735b2bc874a58_elex_wannacry.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{C4B7A4B9-6B3D-45bc-9053-CBC8BEAFBA1D}	{1E7A23CB-BABF-45aa-B6B4-EEC87DB6A1AC}.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{C4B7A4B9-6B3D-45bc-9053-CBC8BEAFBA1D}\stubpath = "C:\\Windows\\{C4B7A4B9-6B3D-45bc-9053-CBC8BEAFBA1D}.exe"	{1E7A23CB-BABF-45aa-B6B4-EEC87DB6A1AC}.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{F8F4D707-B32D-4786-A9DC-097EF797B0B7}	{C4B7A4B9-6B3D-45bc-9053-CBC8BEAFBA1D}.exe

Executes dropped EXE 4 IoCs

pid	Process
6112	{1E7A23CB-BABF-45aa-B6B4-EEC87DB6A1AC}.exe
1164	{C4B7A4B9-6B3D-45bc-9053-CBC8BEAFBA1D}.exe
5272	{F8F4D707-B32D-4786-A9DC-097EF797B0B7}.exe
4228	{F8F4D707-B32D-4786-A9DC-097EF797B0B7}.exe

Drops file in Windows directory 3 IoCs

description	ioc	Process
File created	C:\Windows\{1E7A23CB-BABF-45aa-B6B4-EEC87DB6A1AC}.exe	2026-07-08_601dcb9ccbc062531db735b2bc874a58_elex_wannacry.exe
File created	C:\Windows\{C4B7A4B9-6B3D-45bc-9053-CBC8BEAFBA1D}.exe	{1E7A23CB-BABF-45aa-B6B4-EEC87DB6A1AC}.exe
File created	C:\Windows\{F8F4D707-B32D-4786-A9DC-097EF797B0B7}.exe	{C4B7A4B9-6B3D-45bc-9053-CBC8BEAFBA1D}.exe

System Location Discovery: System Language Discovery 1 TTPs 8 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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{F8F4D707-B32D-4786-A9DC-097EF797B0B7}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{F8F4D707-B32D-4786-A9DC-097EF797B0B7}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-07-08_601dcb9ccbc062531db735b2bc874a58_elex_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{1E7A23CB-BABF-45aa-B6B4-EEC87DB6A1AC}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{C4B7A4B9-6B3D-45bc-9053-CBC8BEAFBA1D}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.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-1-5-21-2049790993-2338060321-149346055-1000\{E8FDB198-9E52-410E-B170-AE2095F742CC}	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 7 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	2696	2026-07-08_601dcb9ccbc062531db735b2bc874a58_elex_wannacry.exe
Token: SeIncBasePriorityPrivilege	6112	{1E7A23CB-BABF-45aa-B6B4-EEC87DB6A1AC}.exe
Token: SeIncBasePriorityPrivilege	1164	{C4B7A4B9-6B3D-45bc-9053-CBC8BEAFBA1D}.exe
Token: SeShutdownPrivilege	1928	explorer.exe
Token: SeCreatePagefilePrivilege	1928	explorer.exe
Token: SeShutdownPrivilege	1928	explorer.exe
Token: SeCreatePagefilePrivilege	1928	explorer.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
3396	sihost.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2696 wrote to memory of 6112	2696	2026-07-08_601dcb9ccbc062531db735b2bc874a58_elex_wannacry.exe	88
PID 2696 wrote to memory of 5552	2696	2026-07-08_601dcb9ccbc062531db735b2bc874a58_elex_wannacry.exe	89
PID 6112 wrote to memory of 1164	6112	{1E7A23CB-BABF-45aa-B6B4-EEC87DB6A1AC}.exe	90
PID 6112 wrote to memory of 760	6112	{1E7A23CB-BABF-45aa-B6B4-EEC87DB6A1AC}.exe	91
PID 1164 wrote to memory of 5272	1164	{C4B7A4B9-6B3D-45bc-9053-CBC8BEAFBA1D}.exe	93
PID 1164 wrote to memory of 5332	1164	{C4B7A4B9-6B3D-45bc-9053-CBC8BEAFBA1D}.exe	94
PID 3396 wrote to memory of 1928	3396	sihost.exe	99
PID 1928 wrote to memory of 4228	1928	explorer.exe	100

C:\Users\Admin\AppData\Local\Temp\2026-07-08_601dcb9ccbc062531db735b2bc874a58_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-07-08_601dcb9ccbc062531db735b2bc874a58_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:2696
- C:\Windows\{1E7A23CB-BABF-45aa-B6B4-EEC87DB6A1AC}.exe
  C:\Windows\{1E7A23CB-BABF-45aa-B6B4-EEC87DB6A1AC}.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:6112
- - C:\Windows\{C4B7A4B9-6B3D-45bc-9053-CBC8BEAFBA1D}.exe
    C:\Windows\{C4B7A4B9-6B3D-45bc-9053-CBC8BEAFBA1D}.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:1164
  - - C:\Windows\{F8F4D707-B32D-4786-A9DC-097EF797B0B7}.exe
      C:\Windows\{F8F4D707-B32D-4786-A9DC-097EF797B0B7}.exe
      4⤵
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      PID:5272
  - - C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c del C:\Windows\{C4B7A~1.EXE > nul
      4⤵
      System Location Discovery: System Language Discovery
      PID:5332
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c del C:\Windows\{1E7A2~1.EXE > nul
    3⤵
    - System Location Discovery: System Language Discovery
    PID:760
- 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:5552

C:\Windows\system32\sihost.exe
sihost.exe
1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:3396
- C:\Windows\explorer.exe
  explorer.exe /LOADSAVEDWINDOWS
  2⤵
  - Modifies registry class
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1928
- - C:\Windows\{F8F4D707-B32D-4786-A9DC-097EF797B0B7}.exe
    "C:\Windows\{F8F4D707-B32D-4786-A9DC-097EF797B0B7}.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:4228

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

{1E7A23CB-BABF-45aa-B6B4-EEC87DB6A1AC}.exe

Path C:\Windows\{1E7A23CB-BABF-45aa-B6B4-EEC87DB6A1AC}.exe
Size 372KB
SHA256 4e3a67b167050f2855f00a4b0f067fe7ed5aeb4f1bc5fac512d7526682671380
MD5 d13b494d168261bc9fefd82cae5afefe
SHA1 fc8373a364ea30f9e03883410f803f958f348287
SHA512 7b60e812e374f539b73878a80374ebe301a178c1dedd2f9ba847a0fbc9691b2d6f87e648d1d4f48a2b102ada1cab8a67dc73b0f146914d7445fbdcc88fef2a23
SSDEEP 384:K7bLwOs8AHsc4sMfwhKQLroBrx4/CFsrdb:Gvw9816vhKQLro1x4/wQR
TLSH
T1378408835BDE9CF2FB91113109798AB9927B9AD4910EBEDFBF90CD150037292D53A10B
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

{C4B7A4B9-6B3D-45bc-9053-CBC8BEAFBA1D}.exe

Path C:\Windows\{C4B7A4B9-6B3D-45bc-9053-CBC8BEAFBA1D}.exe
Size 372KB
SHA256 ea6cb4ebcfef2a5f5b05eb0a392e40399710d038ccba4a2bfbf939b267bf30a6
MD5 afd416f72f620b4f5ea86904f0272a7c
SHA1 54972fe5276eafdb3007d11c79c1a6dae5c9d395
SHA512 989a4008905d32abfd6c070c927854ee0eec4dd77ba74ef91f53e85a8436304b929875a3e9acb9af7cd972a4940cff97a1a8e5cead5f3e8d1df5b00e1e8abbe5
SSDEEP 384:K7bLwOs8AHsc4sMfwhKQLrokWx4/CFsrdb:Gvw9816vhKQLroTx4/wQR
TLSH
T1898409835BDE9CF2FB91113009798AB5927B9AC4910EBEDFBF90CD154037251D53A10B
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

{F8F4D707-B32D-4786-A9DC-097EF797B0B7}.exe

Path C:\Windows\{F8F4D707-B32D-4786-A9DC-097EF797B0B7}.exe
Size 372KB
SHA256 1fd81c0991c93cbe0263b298cf96eed8272bfef1339d55a777ce5c5356f5cb7c
MD5 0e7f74582598dcd1ffe5bd7a7401611b
SHA1 536bea88a9abce2278b3f39794f8ef9352eca1b4
SHA512 5ca85fd0a21d144b4ecc3b965ad0637fec3572eafe1fc7dcc3f7eb5ccdedefb15174a9717ea1c55e7bc97cff3b3dcc9a846a8705439d87951bef605905ea25d1
SSDEEP 384:K7bLwOs8AHsc4sMfwhKQLropx4/CFsrdb:Gvw9816vhKQLropx4/wQR
TLSH
T19E8419835BDE9CF2FB91113109798AB9927B9AC4910EBEDFBF90CD150037251D53A10B
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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Downloads