stormser | c5c028baf81b762a33e16af11e5ef02ad58e4ba1d9c72ea9fcf0b1bbcffc49f5

General

Target
2026-07-01_99dcd6cd1bcff63b627407a31310aedc_elex_wannacry.exe
Size 79KB
Sample260701-xhsg6aev3x
SHA256 c5c028baf81b762a33e16af11e5ef02ad58e4ba1d9c72ea9fcf0b1bbcffc49f5
MD5 99dcd6cd1bcff63b627407a31310aedc
SHA1 c87faf778e228c4b6339e312f7b2bf0b000545e8
SHA512 fa76d6ca51b875005d252a082f61be0ee037d9e91649bae14cf371ab39634690987c84166f8e93b198bc52854e5228c755667264d8e1ef4f11768e2274471e07
SSDEEP 768:4vw9816vhKQLrok4/wQzXOQ69zbjlAAX5e9zx:wEGh0oklGizbR9Xwzx
TLSH
T1EC834BD38EAC4483FDE6697012B8D9B77C3E97C61604B99B6B91FD5408A33C1EB2411E
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 2 IoCs

resource	yara_rule
behavioral2/files/0x000e00000001c518-3.dat	family_stormser
behavioral2/files/0x000e00000001c519-6.dat	family_stormser

Boot or Logon Autostart Execution: Active Setup 2 TTPs 4 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\{618D94C7-C84D-4d2e-B339-0D7A2B828104}\stubpath = "C:\\Windows\\{618D94C7-C84D-4d2e-B339-0D7A2B828104}.exe"	{0AE45099-6BE5-4b53-8618-52014642EB57}.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{0AE45099-6BE5-4b53-8618-52014642EB57}	2026-07-01_99dcd6cd1bcff63b627407a31310aedc_elex_wannacry.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{0AE45099-6BE5-4b53-8618-52014642EB57}\stubpath = "C:\\Windows\\{0AE45099-6BE5-4b53-8618-52014642EB57}.exe"	2026-07-01_99dcd6cd1bcff63b627407a31310aedc_elex_wannacry.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{618D94C7-C84D-4d2e-B339-0D7A2B828104}	{0AE45099-6BE5-4b53-8618-52014642EB57}.exe

Executes dropped EXE 3 IoCs

pid	Process
1040	{0AE45099-6BE5-4b53-8618-52014642EB57}.exe
1780	{618D94C7-C84D-4d2e-B339-0D7A2B828104}.exe
5752	{618D94C7-C84D-4d2e-B339-0D7A2B828104}.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\{0AE45099-6BE5-4b53-8618-52014642EB57}.exe	2026-07-01_99dcd6cd1bcff63b627407a31310aedc_elex_wannacry.exe
File created	C:\Windows\{618D94C7-C84D-4d2e-B339-0D7A2B828104}.exe	{0AE45099-6BE5-4b53-8618-52014642EB57}.exe

System Location Discovery: System Language Discovery 1 TTPs 6 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	2026-07-01_99dcd6cd1bcff63b627407a31310aedc_elex_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{0AE45099-6BE5-4b53-8618-52014642EB57}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{618D94C7-C84D-4d2e-B339-0D7A2B828104}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{618D94C7-C84D-4d2e-B339-0D7A2B828104}.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-1-5-21-1991999443-3181470666-3272020885-1000\{EF8E7432-C649-4D54-9D79-3C49A65705EF}	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 6 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	1700	2026-07-01_99dcd6cd1bcff63b627407a31310aedc_elex_wannacry.exe
Token: SeIncBasePriorityPrivilege	1040	{0AE45099-6BE5-4b53-8618-52014642EB57}.exe
Token: SeShutdownPrivilege	5744	explorer.exe
Token: SeCreatePagefilePrivilege	5744	explorer.exe
Token: SeShutdownPrivilege	5744	explorer.exe
Token: SeCreatePagefilePrivilege	5744	explorer.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2436	sihost.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1700 wrote to memory of 1040	1700	2026-07-01_99dcd6cd1bcff63b627407a31310aedc_elex_wannacry.exe	88
PID 1700 wrote to memory of 3968	1700	2026-07-01_99dcd6cd1bcff63b627407a31310aedc_elex_wannacry.exe	89
PID 1040 wrote to memory of 1780	1040	{0AE45099-6BE5-4b53-8618-52014642EB57}.exe	90
PID 1040 wrote to memory of 3408	1040	{0AE45099-6BE5-4b53-8618-52014642EB57}.exe	91
PID 2436 wrote to memory of 5744	2436	sihost.exe	97
PID 5744 wrote to memory of 5752	5744	explorer.exe	98

C:\Users\Admin\AppData\Local\Temp\2026-07-01_99dcd6cd1bcff63b627407a31310aedc_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-07-01_99dcd6cd1bcff63b627407a31310aedc_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:1700
- C:\Windows\{0AE45099-6BE5-4b53-8618-52014642EB57}.exe
  C:\Windows\{0AE45099-6BE5-4b53-8618-52014642EB57}.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:1040
- - C:\Windows\{618D94C7-C84D-4d2e-B339-0D7A2B828104}.exe
    C:\Windows\{618D94C7-C84D-4d2e-B339-0D7A2B828104}.exe
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:1780
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c del C:\Windows\{0AE45~1.EXE > nul
    3⤵
    - System Location Discovery: System Language Discovery
    PID:3408
- 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:3968

C:\Windows\system32\sihost.exe
sihost.exe
1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:2436
- C:\Windows\explorer.exe
  explorer.exe /LOADSAVEDWINDOWS
  2⤵
  - Modifies registry class
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:5744
- - C:\Windows\{618D94C7-C84D-4d2e-B339-0D7A2B828104}.exe
    "C:\Windows\{618D94C7-C84D-4d2e-B339-0D7A2B828104}.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:5752

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

{0AE45099-6BE5-4b53-8618-52014642EB57}.exe

Path C:\Windows\{0AE45099-6BE5-4b53-8618-52014642EB57}.exe
Size 79KB
SHA256 0efb9101037c4a0caaeab2e0fc2fdb524f2024d14cbe2fc0d58dcc0fd3580ba2
MD5 b062c888052c8be5353fe5e9adac1a69
SHA1 c782086a0d4544fc1f8cb14c3c56deeb2c66c70b
SHA512 d6da4183c0e0d5a2bfd7ab16070bb601c6392b15f0e29fbb4f90fb3ad1efeada62df9a74efd7ea037ac12d62b5f5cf092679ca0d5105757c39c2038eb483eadc
SSDEEP 768:4vw9816vhKQLrov4/wQzXOQ69zbjlAAX5e9zx:wEGh0ovlGizbR9Xwzx
TLSH
T165834BD38EAC4483FDE6697012B8D9B77C3E97C61604B99B6B91FD5408A33C1EB2411E
MD5 SHA1 SHA512 SSDEEP TLSH

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{618D94C7-C84D-4d2e-B339-0D7A2B828104}.exe

Path C:\Windows\{618D94C7-C84D-4d2e-B339-0D7A2B828104}.exe
Size 79KB
SHA256 33c4ee84f0fa6e4d65a9364e700a5798a477f0956cc794fc2757d7268161e5ec
MD5 f0dd7d93db88bcb33e1db7db821720b7
SHA1 09c07d91ee289a81725206467767a15012b0ea39
SHA512 92bbb28451948efa87bc0926c9ee7e2a4bbdeba9f26da3240be2fa25191f20b8e247bf6cab59820daa6d0c005831f9d65d0737eb7e3f85395a3e2e5009fd6cd5
SSDEEP 768:4vw9816vhKQLroc4/wQzXOQ69zbjlAAX5e9zx:wEGh0oclGizbR9Xwzx
TLSH
T15B834BD38EAC4483FDD6697012B8D9B77C3E97C61604799B6B91FD5408A33C1EB2411E
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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