stormser | 17639a7f46c29aaf744435eb1ba08505896475d773a90b2ddc97a2eb3f3f5096

General

Target
2026-06-27_9df40226a75cbd38a4c69d6965fd03bf_elex_wannacry.exe
Size 76KB
Sample260629-e75vnset8l
SHA256 17639a7f46c29aaf744435eb1ba08505896475d773a90b2ddc97a2eb3f3f5096
MD5 9df40226a75cbd38a4c69d6965fd03bf
SHA1 5f59e97f4cb70c07d5161f7d56d6509e534a7cde
SHA512 ac5bf67e2b450e2d457fcc42ccb44b9e2b9c79727eb48834d3da6099694d7908fe333a84e85917a0ecf3b0c0573df3ef227aa7366fc2796593f3a7e48e7888f5
SSDEEP 768:vvw9816vhKQLrokx4/wQxWMZQcpFM1FgDagXP2TyS1tl7lfqvocqcdT3WVd:nEGh0okxlwWMZQcpmgDagIyS1loL7Wr
TLSH
T131735B02A684B5F2EBAC0134B19F0F7E963796B1C0D9682F6F634DA55862C63F431E17
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/0x000e00000001c4e6-3.dat	family_stormser
behavioral2/files/0x000e00000001c4e8-6.dat	family_stormser
behavioral2/files/0x000f00000001c4e6-14.dat	family_stormser

Detects Windows executables referencing non-Windows User-Agents 3 IoCs

resource	yara_rule
behavioral2/files/0x000e00000001c4e6-3.dat	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
behavioral2/files/0x000e00000001c4e8-6.dat	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
behavioral2/files/0x000f00000001c4e6-14.dat	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA

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
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{5D865CFB-78B5-4815-8533-5B8AE042A977}	{776CEE66-B96C-43ce-8DC2-C2F6E85A33B2}.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{5D865CFB-78B5-4815-8533-5B8AE042A977}\stubpath = "C:\\Windows\\{5D865CFB-78B5-4815-8533-5B8AE042A977}.exe"	{776CEE66-B96C-43ce-8DC2-C2F6E85A33B2}.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{04A38EC2-37A0-4ca3-A7FD-892A11B9F80A}	2026-06-27_9df40226a75cbd38a4c69d6965fd03bf_elex_wannacry.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{04A38EC2-37A0-4ca3-A7FD-892A11B9F80A}\stubpath = "C:\\Windows\\{04A38EC2-37A0-4ca3-A7FD-892A11B9F80A}.exe"	2026-06-27_9df40226a75cbd38a4c69d6965fd03bf_elex_wannacry.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{776CEE66-B96C-43ce-8DC2-C2F6E85A33B2}	{04A38EC2-37A0-4ca3-A7FD-892A11B9F80A}.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{776CEE66-B96C-43ce-8DC2-C2F6E85A33B2}\stubpath = "C:\\Windows\\{776CEE66-B96C-43ce-8DC2-C2F6E85A33B2}.exe"	{04A38EC2-37A0-4ca3-A7FD-892A11B9F80A}.exe

Executes dropped EXE 4 IoCs

pid	Process
3884	{04A38EC2-37A0-4ca3-A7FD-892A11B9F80A}.exe
1972	{776CEE66-B96C-43ce-8DC2-C2F6E85A33B2}.exe
5964	{5D865CFB-78B5-4815-8533-5B8AE042A977}.exe
2904	{5D865CFB-78B5-4815-8533-5B8AE042A977}.exe

Drops file in Windows directory 3 IoCs

description	ioc	Process
File created	C:\Windows\{04A38EC2-37A0-4ca3-A7FD-892A11B9F80A}.exe	2026-06-27_9df40226a75cbd38a4c69d6965fd03bf_elex_wannacry.exe
File created	C:\Windows\{776CEE66-B96C-43ce-8DC2-C2F6E85A33B2}.exe	{04A38EC2-37A0-4ca3-A7FD-892A11B9F80A}.exe
File created	C:\Windows\{5D865CFB-78B5-4815-8533-5B8AE042A977}.exe	{776CEE66-B96C-43ce-8DC2-C2F6E85A33B2}.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	{776CEE66-B96C-43ce-8DC2-C2F6E85A33B2}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{5D865CFB-78B5-4815-8533-5B8AE042A977}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{5D865CFB-78B5-4815-8533-5B8AE042A977}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-06-27_9df40226a75cbd38a4c69d6965fd03bf_elex_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{04A38EC2-37A0-4ca3-A7FD-892A11B9F80A}.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-1-5-21-2894455325-857903158-4263030270-1000\{93609502-F1A5-46C6-A72F-1AAAF258B67D}	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	3024	2026-06-27_9df40226a75cbd38a4c69d6965fd03bf_elex_wannacry.exe
Token: SeIncBasePriorityPrivilege	3884	{04A38EC2-37A0-4ca3-A7FD-892A11B9F80A}.exe
Token: SeIncBasePriorityPrivilege	1972	{776CEE66-B96C-43ce-8DC2-C2F6E85A33B2}.exe
Token: SeShutdownPrivilege	2604	explorer.exe
Token: SeCreatePagefilePrivilege	2604	explorer.exe
Token: SeShutdownPrivilege	2604	explorer.exe
Token: SeCreatePagefilePrivilege	2604	explorer.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2648	sihost.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 3024 wrote to memory of 3884	3024	2026-06-27_9df40226a75cbd38a4c69d6965fd03bf_elex_wannacry.exe	89
PID 3024 wrote to memory of 4656	3024	2026-06-27_9df40226a75cbd38a4c69d6965fd03bf_elex_wannacry.exe	90
PID 3884 wrote to memory of 1972	3884	{04A38EC2-37A0-4ca3-A7FD-892A11B9F80A}.exe	91
PID 3884 wrote to memory of 4628	3884	{04A38EC2-37A0-4ca3-A7FD-892A11B9F80A}.exe	92
PID 1972 wrote to memory of 5964	1972	{776CEE66-B96C-43ce-8DC2-C2F6E85A33B2}.exe	93
PID 1972 wrote to memory of 3320	1972	{776CEE66-B96C-43ce-8DC2-C2F6E85A33B2}.exe	94
PID 2648 wrote to memory of 2604	2648	sihost.exe	99
PID 2604 wrote to memory of 2904	2604	explorer.exe	100

C:\Users\Admin\AppData\Local\Temp\2026-06-27_9df40226a75cbd38a4c69d6965fd03bf_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-06-27_9df40226a75cbd38a4c69d6965fd03bf_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:3024
- C:\Windows\{04A38EC2-37A0-4ca3-A7FD-892A11B9F80A}.exe
  C:\Windows\{04A38EC2-37A0-4ca3-A7FD-892A11B9F80A}.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:3884
- - C:\Windows\{776CEE66-B96C-43ce-8DC2-C2F6E85A33B2}.exe
    C:\Windows\{776CEE66-B96C-43ce-8DC2-C2F6E85A33B2}.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:1972
  - - C:\Windows\{5D865CFB-78B5-4815-8533-5B8AE042A977}.exe
      C:\Windows\{5D865CFB-78B5-4815-8533-5B8AE042A977}.exe
      4⤵
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      PID:5964
  - - C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c del C:\Windows\{776CE~1.EXE > nul
      4⤵
      System Location Discovery: System Language Discovery
      PID:3320
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c del C:\Windows\{04A38~1.EXE > nul
    3⤵
    - System Location Discovery: System Language Discovery
    PID:4628
- 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:4656

C:\Windows\system32\sihost.exe
sihost.exe
1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:2648
- C:\Windows\explorer.exe
  explorer.exe /LOADSAVEDWINDOWS
  2⤵
  - Modifies registry class
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2604
- - C:\Windows\{5D865CFB-78B5-4815-8533-5B8AE042A977}.exe
    "C:\Windows\{5D865CFB-78B5-4815-8533-5B8AE042A977}.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:2904

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

{04A38EC2-37A0-4ca3-A7FD-892A11B9F80A}.exe

Path C:\Windows\{04A38EC2-37A0-4ca3-A7FD-892A11B9F80A}.exe
Size 76KB
SHA256 659a7ca55b9fa1e868f5681c8e1f4a4b67128fb3d90dcb9842cf415aedf2bc7c
MD5 1f02a945530206706897137dffa278f5
SHA1 385906f50e8414ca429cc91b29c50deaef87f373
SHA512 d49fbc16ea37524e9f1c1c7f2c08063e7f2353fce0a4590d49884a96f9719208914e63dda37ef9dbaa7a4d0cfd1dc0c65aff45f3d9f67d38d715a7f2995b380e
SSDEEP 768:vvw9816vhKQLroyx4/wQxWMZQcpFM1FgDagXP2TyS1tl7lfqvocqcdT3WVd:nEGh0oyxlwWMZQcpmgDagIyS1loL7Wr
TLSH
T1BE735B02A684B5F2EBAC0134B19F0F7E963796B1C0D9682F6F634DA55862C63F431E17
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

{5D865CFB-78B5-4815-8533-5B8AE042A977}.exe

Path C:\Windows\{5D865CFB-78B5-4815-8533-5B8AE042A977}.exe
Size 76KB
SHA256 61d187d6f0f0184b2b4955ddf9e163e68165185369ca54a4b60c8a4d42b46ed9
MD5 ef22218ac4ce7243659d4ab9ad4ad2a3
SHA1 f63d6eaed3ae5e7308296144713c6b530a2bb926
SHA512 8d163250528f03c7f53076630c3b65dbf821bc436ec8390358aad445e1089bd2731e4297a4173f092c67011deee83e386925560b60441cf9670cbf89dfcde2b0
SSDEEP 768:vvw9816vhKQLrorx4/wQxWMZQcpFM1FgDagXP2TyS1tl7lfqvocqcdT3WVd:nEGh0orxlwWMZQcpmgDagIyS1loL7Wr
TLSH
T126735B02A684B5F2EBAC0134B19F0F7E963796B1C0D9682F6F634DA55862C63F431E17
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

{776CEE66-B96C-43ce-8DC2-C2F6E85A33B2}.exe

Path C:\Windows\{776CEE66-B96C-43ce-8DC2-C2F6E85A33B2}.exe
Size 76KB
SHA256 8a9d428cd7eb8e6470dd0c8069aa210bbaa2a8c826b328459805c42faa385900
MD5 90cd3d8a0bc8af4f07d9675b04932177
SHA1 37e5f5f307e38400627f2db1e167efe60380ec56
SHA512 f4a7315576021efd1ffda5feb404978b3e851e4674200a6496514e67a49783943593219ebc52d429fb101a22ed2ed27f720bccb43445d50adc6fb9d97f359476
SSDEEP 768:vvw9816vhKQLrofx4/wQxWMZQcpFM1FgDagXP2TyS1tl7lfqvocqcdT3WVd:nEGh0ofxlwWMZQcpmgDagIyS1loL7Wr
TLSH
T1F9735B02A684B5F2EBAC0134B19F0F7E963796B1C0D9682F6F634DA55862C63F431E17
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