stormser | d67f8b6bbcc9e0ad2546249f30b04f91a905ac0b5dff22213a46f7a9c940fd04

General

Target
2026-07-09_57345d837075589b120056b3a6b8d819_elex_wannacry.exe
Size 59KB
Sample260709-v13pqsft9t
SHA256 d67f8b6bbcc9e0ad2546249f30b04f91a905ac0b5dff22213a46f7a9c940fd04
MD5 57345d837075589b120056b3a6b8d819
SHA1 e9ef1dde7ae7f2d1ec42b02421cf0095e7794078
SHA512 5bdfa5b5cff7966ede5e091374e00bf10e1e00d7da3852ef073c74c672e49e08d9f88c9cf736fbe532f9ea23e2f0d37d296bcf6c0665983dd1eecef15c753081
SSDEEP 192:vbOzawOs81elJHsc45CcRZOgtShcWaOT2QLrCqwlqY04/CFxyNhoy5t:vbLwOs8AHsc4sMfwhKQLrolA4/CFsrd
TLSH
T17843F7834BEE9CF2F791117108798AB9927B99D4950EBEDFBF90CD150037292E53A10B
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/0x000d00000001c588-3.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\{51D4F4DC-AFB2-4084-A1F0-D69758D7CA68}	2026-07-09_57345d837075589b120056b3a6b8d819_elex_wannacry.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{51D4F4DC-AFB2-4084-A1F0-D69758D7CA68}\stubpath = "C:\\Windows\\{51D4F4DC-AFB2-4084-A1F0-D69758D7CA68}.exe"	2026-07-09_57345d837075589b120056b3a6b8d819_elex_wannacry.exe

Executes dropped EXE 2 IoCs

pid	Process
5884	{51D4F4DC-AFB2-4084-A1F0-D69758D7CA68}.exe
5764	{51D4F4DC-AFB2-4084-A1F0-D69758D7CA68}.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\Windows\{51D4F4DC-AFB2-4084-A1F0-D69758D7CA68}.exe	2026-07-09_57345d837075589b120056b3a6b8d819_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	2026-07-09_57345d837075589b120056b3a6b8d819_elex_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{51D4F4DC-AFB2-4084-A1F0-D69758D7CA68}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{51D4F4DC-AFB2-4084-A1F0-D69758D7CA68}.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-1-5-21-2626306573-1585762579-411806764-1000\{0BA9B97E-B156-4746-ADD7-A99CFE8595C7}	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 5 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	4952	2026-07-09_57345d837075589b120056b3a6b8d819_elex_wannacry.exe
Token: SeShutdownPrivilege	3192	explorer.exe
Token: SeCreatePagefilePrivilege	3192	explorer.exe
Token: SeShutdownPrivilege	3192	explorer.exe
Token: SeCreatePagefilePrivilege	3192	explorer.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
1856	sihost.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 4952 wrote to memory of 5884	4952	2026-07-09_57345d837075589b120056b3a6b8d819_elex_wannacry.exe	88
PID 4952 wrote to memory of 1212	4952	2026-07-09_57345d837075589b120056b3a6b8d819_elex_wannacry.exe	89
PID 1856 wrote to memory of 3192	1856	sihost.exe	94
PID 3192 wrote to memory of 5764	3192	explorer.exe	95

C:\Users\Admin\AppData\Local\Temp\2026-07-09_57345d837075589b120056b3a6b8d819_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-07-09_57345d837075589b120056b3a6b8d819_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:4952
- C:\Windows\{51D4F4DC-AFB2-4084-A1F0-D69758D7CA68}.exe
  C:\Windows\{51D4F4DC-AFB2-4084-A1F0-D69758D7CA68}.exe
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:5884
- 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:1212

C:\Windows\system32\sihost.exe
sihost.exe
1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:1856
- C:\Windows\explorer.exe
  explorer.exe /LOADSAVEDWINDOWS
  2⤵
  - Modifies registry class
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3192
- - C:\Windows\{51D4F4DC-AFB2-4084-A1F0-D69758D7CA68}.exe
    "C:\Windows\{51D4F4DC-AFB2-4084-A1F0-D69758D7CA68}.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:5764

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

{51D4F4DC-AFB2-4084-A1F0-D69758D7CA68}.exe

Path C:\Windows\{51D4F4DC-AFB2-4084-A1F0-D69758D7CA68}.exe
Size 59KB
SHA256 909b84d513f3e75799ae1d46efafaeab0a2c9cad9c74063e4463f3cfea23b11b
MD5 78ac9d421d59c12223f1a17daa2eb22a
SHA1 eddfae5db035da2c57ddad1715b549416e9c90db
SHA512 49a59fff64eff209fe60fd1088fff31823a06374e0668b961a5d18ce124ed60d4dd5721a2e546afbfeed6c416a9d2501d0c15824dae4d198b735883ce9d79b53
SSDEEP 192:vbOzawOs81elJHsc45CcRZOgtShcWaOT2QLrCqwgY04/CFxyNhoy5t:vbLwOs8AHsc4sMfwhKQLrou4/CFsrd
TLSH
T1284308834BEE9CF2F791113108798AB9927B99D4950EBEDFBF90CD150037292E43A10B
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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