stormser | b7000360846fc084c6192c451cc722ac076f0383ee59165d672bd2eca88b7c5e

General

Target
2026-07-02_eb9aca613cbe904de52effd430fad0a2_elex_wannacry.exe
Size 79KB
Sample260702-pyc4eaat8z
SHA256 b7000360846fc084c6192c451cc722ac076f0383ee59165d672bd2eca88b7c5e
MD5 eb9aca613cbe904de52effd430fad0a2
SHA1 d18a11c0f5bc53712374c12ff929688e9a697f0b
SHA512 3ae202614856d1e06b58ae0cd8e1f3aca342dd3962a3acb2a0866f83fc31dfed6e72af366700efb57bc49fce6bb3d44b4425db215c4410873e60bec64c309ec7
SSDEEP 768:4vw9816vhKQLrod4/wQzXOQ69zbjlAAX5e9zz:wEGh0odlGizbR9Xwzz
TLSH
T17B835CD38EAC4483FDD6697012B8D9A77C3E97C61604799B6B91FD5408A33C1EB3411E
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/0x000e00000001c56c-3.dat	family_stormser
behavioral2/files/0x000e00000001c56d-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
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{28DF49FE-250D-4965-9F79-E707C040C97C}	2026-07-02_eb9aca613cbe904de52effd430fad0a2_elex_wannacry.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{28DF49FE-250D-4965-9F79-E707C040C97C}\stubpath = "C:\\Windows\\{28DF49FE-250D-4965-9F79-E707C040C97C}.exe"	2026-07-02_eb9aca613cbe904de52effd430fad0a2_elex_wannacry.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{14B1CA2E-C4FE-4b85-BA28-839F46B4E85B}	{28DF49FE-250D-4965-9F79-E707C040C97C}.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{14B1CA2E-C4FE-4b85-BA28-839F46B4E85B}\stubpath = "C:\\Windows\\{14B1CA2E-C4FE-4b85-BA28-839F46B4E85B}.exe"	{28DF49FE-250D-4965-9F79-E707C040C97C}.exe

Executes dropped EXE 3 IoCs

pid	Process
4188	{28DF49FE-250D-4965-9F79-E707C040C97C}.exe
2624	{14B1CA2E-C4FE-4b85-BA28-839F46B4E85B}.exe
4248	{14B1CA2E-C4FE-4b85-BA28-839F46B4E85B}.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\{28DF49FE-250D-4965-9F79-E707C040C97C}.exe	2026-07-02_eb9aca613cbe904de52effd430fad0a2_elex_wannacry.exe
File created	C:\Windows\{14B1CA2E-C4FE-4b85-BA28-839F46B4E85B}.exe	{28DF49FE-250D-4965-9F79-E707C040C97C}.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	2026-07-02_eb9aca613cbe904de52effd430fad0a2_elex_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{28DF49FE-250D-4965-9F79-E707C040C97C}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{14B1CA2E-C4FE-4b85-BA28-839F46B4E85B}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{14B1CA2E-C4FE-4b85-BA28-839F46B4E85B}.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-1-5-21-3047816590-610495838-277027736-1000\{96385461-EF95-42AD-8672-2A127B67C67D}	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	908	2026-07-02_eb9aca613cbe904de52effd430fad0a2_elex_wannacry.exe
Token: SeIncBasePriorityPrivilege	4188	{28DF49FE-250D-4965-9F79-E707C040C97C}.exe
Token: SeShutdownPrivilege	972	explorer.exe
Token: SeCreatePagefilePrivilege	972	explorer.exe
Token: SeShutdownPrivilege	972	explorer.exe
Token: SeCreatePagefilePrivilege	972	explorer.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2740	sihost.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 908 wrote to memory of 4188	908	2026-07-02_eb9aca613cbe904de52effd430fad0a2_elex_wannacry.exe	88
PID 908 wrote to memory of 5376	908	2026-07-02_eb9aca613cbe904de52effd430fad0a2_elex_wannacry.exe	89
PID 4188 wrote to memory of 2624	4188	{28DF49FE-250D-4965-9F79-E707C040C97C}.exe	90
PID 4188 wrote to memory of 4316	4188	{28DF49FE-250D-4965-9F79-E707C040C97C}.exe	91
PID 2740 wrote to memory of 972	2740	sihost.exe	97
PID 972 wrote to memory of 4248	972	explorer.exe	98

C:\Users\Admin\AppData\Local\Temp\2026-07-02_eb9aca613cbe904de52effd430fad0a2_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-07-02_eb9aca613cbe904de52effd430fad0a2_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:908
- C:\Windows\{28DF49FE-250D-4965-9F79-E707C040C97C}.exe
  C:\Windows\{28DF49FE-250D-4965-9F79-E707C040C97C}.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:4188
- - C:\Windows\{14B1CA2E-C4FE-4b85-BA28-839F46B4E85B}.exe
    C:\Windows\{14B1CA2E-C4FE-4b85-BA28-839F46B4E85B}.exe
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:2624
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c del C:\Windows\{28DF4~1.EXE > nul
    3⤵
    - System Location Discovery: System Language Discovery
    PID:4316
- 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:5376

C:\Windows\system32\sihost.exe
sihost.exe
1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:2740
- C:\Windows\explorer.exe
  explorer.exe /LOADSAVEDWINDOWS
  2⤵
  - Modifies registry class
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:972
- - C:\Windows\{14B1CA2E-C4FE-4b85-BA28-839F46B4E85B}.exe
    "C:\Windows\{14B1CA2E-C4FE-4b85-BA28-839F46B4E85B}.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:4248

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

{14B1CA2E-C4FE-4b85-BA28-839F46B4E85B}.exe

Path C:\Windows\{14B1CA2E-C4FE-4b85-BA28-839F46B4E85B}.exe
Size 79KB
SHA256 e2c0612490043eb432da3ecb097566543d101740d13687f11c78f1c9f41b1537
MD5 d3072520e63d64f6820c21d3220f4f97
SHA1 ca222298eec8b8c9119e0498bdd37bfa0692de0e
SHA512 e0292a93f929d26a5341c2d213bad3f9b2426814a423c5616818bcac3efdb4a77821ab7d689113b3e796a5698970681c627e9604310cab9e41c126974c4c0a54
SSDEEP 768:4vw9816vhKQLroVZ4/wQzXOQ69zbjlAAX5e9zz:wEGh0oVZlGizbR9Xwzz
TLSH
T15D835CD38EAC4483FDE6697012B8D9A77C3E97C61604B99B6B91FD5408A33C1EB3411E
MD5 SHA1 SHA512 SSDEEP TLSH

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{28DF49FE-250D-4965-9F79-E707C040C97C}.exe

Path C:\Windows\{28DF49FE-250D-4965-9F79-E707C040C97C}.exe
Size 79KB
SHA256 75ac149092825f9ec861f0ebf2ec4adf994136e22138f1f43754144a83316f97
MD5 b1a3675bc55838cef0a45f652d84f6f4
SHA1 3c62863b6eda06f2c2d5c6a4980e125b5083ede9
SHA512 16db33344a12a597fb44be502736217b687d99741a9836058b175fbcb81054ea565a75ffff77bc6020c2d0e42a68a86e1391f604a3121df6ba253d34f407ccaa
SSDEEP 768:4vw9816vhKQLroU4/wQzXOQ69zbjlAAX5e9zz:wEGh0oUlGizbR9Xwzz
TLSH
T11F835CD38EAC4483FDD6697012B8D9A77C3E97C61504799B6B91FD5408A33C1EB3411E
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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