stormser | 20859502473c49b4c645cc672e386ce23060293a374ef1a42019ae8ef9d40ddf

General

Target
2026-08-13_b8c279b7ef625027b8693b1cbbf575ed_elex_wannacry.exe
Size 59KB
Sample260813-pg3yhaaf86
SHA256 20859502473c49b4c645cc672e386ce23060293a374ef1a42019ae8ef9d40ddf
MD5 b8c279b7ef625027b8693b1cbbf575ed
SHA1 ce650d7b82d6cd5f94bd53d261d8ced9d0bfeda4
SHA512 55b26b90c33497e8359fa108a4fab4cc8e2daecdbd126c0a3840f0a740ed7938778c2a82e83ed78beddeda5559600894e7d4e7380288aa3eda1f8b03a4cbc0da
SSDEEP 192:nbOzawOs81elJHsc45CcRZOgtShcWaOT2QLrCqw5Y04/CFxyNhoy5t:nbLwOs8AHsc4sMfwhKQLroL4/CFsrd
TLSH
T1C643F7834BEE9CF2F7911131087D8AB9927B99D4910EBE9FBB90CD550037292E53A10B
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

discovery execution 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
behavioral1/files/0x00070000000243b7-2.dat	family_stormser
behavioral1/files/0x00050000000006cf-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\{59695723-ACD2-4023-9CA9-84445DD7954F}	2026-08-13_b8c279b7ef625027b8693b1cbbf575ed_elex_wannacry.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{59695723-ACD2-4023-9CA9-84445DD7954F}\stubpath = "C:\\Windows\\{59695723-ACD2-4023-9CA9-84445DD7954F}.exe"	2026-08-13_b8c279b7ef625027b8693b1cbbf575ed_elex_wannacry.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{CDBF9E14-29AD-4f08-B325-B6682BA5B8FB}	{59695723-ACD2-4023-9CA9-84445DD7954F}.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{CDBF9E14-29AD-4f08-B325-B6682BA5B8FB}\stubpath = "C:\\Windows\\{CDBF9E14-29AD-4f08-B325-B6682BA5B8FB}.exe"	{59695723-ACD2-4023-9CA9-84445DD7954F}.exe

Executes dropped EXE 2 IoCs

pid	Process
1080	{59695723-ACD2-4023-9CA9-84445DD7954F}.exe
2292	{CDBF9E14-29AD-4f08-B325-B6682BA5B8FB}.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\{59695723-ACD2-4023-9CA9-84445DD7954F}.exe	2026-08-13_b8c279b7ef625027b8693b1cbbf575ed_elex_wannacry.exe
File created	C:\Windows\{CDBF9E14-29AD-4f08-B325-B6682BA5B8FB}.exe	{59695723-ACD2-4023-9CA9-84445DD7954F}.exe

Executes a command shell one-liner 1 TTPs 2 IoCs

Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

execution

Windows Command Shell

T1059.003

pid	Process
1092	cmd.exe
5008	cmd.exe

System Location Discovery: System Language Discovery 1 TTPs 5 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	2026-08-13_b8c279b7ef625027b8693b1cbbf575ed_elex_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{59695723-ACD2-4023-9CA9-84445DD7954F}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{CDBF9E14-29AD-4f08-B325-B6682BA5B8FB}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	4780	2026-08-13_b8c279b7ef625027b8693b1cbbf575ed_elex_wannacry.exe
Token: SeIncBasePriorityPrivilege	1080	{59695723-ACD2-4023-9CA9-84445DD7954F}.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 4780 wrote to memory of 1080	4780	2026-08-13_b8c279b7ef625027b8693b1cbbf575ed_elex_wannacry.exe	89
PID 4780 wrote to memory of 1092	4780	2026-08-13_b8c279b7ef625027b8693b1cbbf575ed_elex_wannacry.exe	90
PID 1080 wrote to memory of 2292	1080	{59695723-ACD2-4023-9CA9-84445DD7954F}.exe	91
PID 1080 wrote to memory of 5008	1080	{59695723-ACD2-4023-9CA9-84445DD7954F}.exe	92

C:\Users\Admin\AppData\Local\Temp\2026-08-13_b8c279b7ef625027b8693b1cbbf575ed_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-08-13_b8c279b7ef625027b8693b1cbbf575ed_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:4780
- C:\Windows\{59695723-ACD2-4023-9CA9-84445DD7954F}.exe
  C:\Windows\{59695723-ACD2-4023-9CA9-84445DD7954F}.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:1080
- - C:\Windows\{CDBF9E14-29AD-4f08-B325-B6682BA5B8FB}.exe
    C:\Windows\{CDBF9E14-29AD-4f08-B325-B6682BA5B8FB}.exe
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:2292
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c del C:\Windows\{59695~1.EXE > nul
    3⤵
    - Executes a command shell one-liner
    - System Location Discovery: System Language Discovery
    PID:5008
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c del C:\Users\Admin\AppData\Local\Temp\2026-0~1.EXE > nul
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  PID:1092

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

Windows Command Shell

1

T1059.003

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

{59695723-ACD2-4023-9CA9-84445DD7954F}.exe

Path C:\Windows\{59695723-ACD2-4023-9CA9-84445DD7954F}.exe
Size 59KB
SHA256 4e25687c54ec5b7590ebf4f96e61f44f5dafaafb9cd4a84364ad5a3728f81c6f
MD5 aabd2e9076b093b1436c152c5be0872a
SHA1 6c4235ad2a8a5f81e0e3eee84d32bed37dce4b2f
SHA512 fdb0a73eafeb83de9e6a6b84b449807cd61f300ddd8074ef63f0c238f4a65b0cf9097d1394fa77b422873385caddd246f23746d11def15b6eedb9a371feb8235
SSDEEP 192:nbOzawOs81elJHsc45CcRZOgtShcWaOT2QLrCqwFY04/CFxyNhoy5t:nbLwOs8AHsc4sMfwhKQLro34/CFsrd
TLSH
T17543F7834BEE5CF2FB91113108798BB9927B99D4910EBE9FBF90CD550037292E43A10B
MD5 SHA1 SHA512 SSDEEP TLSH

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{CDBF9E14-29AD-4f08-B325-B6682BA5B8FB}.exe

Path C:\Windows\{CDBF9E14-29AD-4f08-B325-B6682BA5B8FB}.exe
Size 59KB
SHA256 93f1842e2f6f23b87bd7599d0c2a552418aff0465e00527dcceaf267953585bf
MD5 8e306f4860184f2ef95764c1517509b1
SHA1 386b0a0dd42bb93aa920c4d5d647c662946b5557
SHA512 2c016ef096d03017308f1d9778da270079556d2ac5e88a4dc1f5b20a6601090aa5e9f8e15714defe5a61afd1d77736cb54792cccc3ce9f97ca8745a0b47dddd9
SSDEEP 192:nbOzawOs81elJHsc45CcRZOgtShcWaOT2QLrCqwyY04/CFxyNhoy5t:nbLwOs8AHsc4sMfwhKQLroI4/CFsrd
TLSH
T10D43F7834BEE5CF2F791117108798AB9927B99D4950EBEDFBF90CD150037292E53A10B
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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