stormser | 997bebf31ad350d25676753d3037feff528b38f7757e88ed668cc64151bbc17d

General

Target
2026-10-28_93d7c709f6d1d0c13a0865e80dc7e893_elex_wannacry.exe
Size 89KB
Sample261029-3cacaatz4p
SHA256 997bebf31ad350d25676753d3037feff528b38f7757e88ed668cc64151bbc17d
MD5 93d7c709f6d1d0c13a0865e80dc7e893
SHA1 578ca87851ecc0a5bb8e2e25a4df5ff2ffe8e60f
SHA512 63236d1b0ab8f7df88d4a4dd209f1b0cb7d6f9f286a354f89a8b415d0b0c62dd25eb49d23c58b37ce3dde637b7bef26d704460e7eac85273a263c9b9460b657d
SSDEEP 768:Qvw9816vhKQLroM4/wQRNrfrunMxVFA3b7gls:YEGh0oMl2unMxVS3HgO
TLSH
T1DF93A33D9DDA1037E277D6B585F126E3FE66B983360A1D0E469343428D23B53AD8AC1C
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 3 IoCs

resource	yara_rule
behavioral1/files/0x00070000000243ef-2.dat	family_stormser
behavioral1/files/0x00080000000243df-5.dat	family_stormser
behavioral1/files/0x00080000000243f7-10.dat	family_stormser

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
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{D64D6C0C-1740-4396-B276-6DD11EA7A68E}\stubpath = "C:\\Windows\\{D64D6C0C-1740-4396-B276-6DD11EA7A68E}.exe"	{22AC640F-705F-4563-9575-76EB81F1859D}.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{EE67BB58-F3AC-44ba-A1FC-71BA3A1764BE}	{D64D6C0C-1740-4396-B276-6DD11EA7A68E}.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{EE67BB58-F3AC-44ba-A1FC-71BA3A1764BE}\stubpath = "C:\\Windows\\{EE67BB58-F3AC-44ba-A1FC-71BA3A1764BE}.exe"	{D64D6C0C-1740-4396-B276-6DD11EA7A68E}.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{22AC640F-705F-4563-9575-76EB81F1859D}	2026-10-28_93d7c709f6d1d0c13a0865e80dc7e893_elex_wannacry.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{22AC640F-705F-4563-9575-76EB81F1859D}\stubpath = "C:\\Windows\\{22AC640F-705F-4563-9575-76EB81F1859D}.exe"	2026-10-28_93d7c709f6d1d0c13a0865e80dc7e893_elex_wannacry.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{D64D6C0C-1740-4396-B276-6DD11EA7A68E}	{22AC640F-705F-4563-9575-76EB81F1859D}.exe

Executes dropped EXE 3 IoCs

pid	Process
2052	{22AC640F-705F-4563-9575-76EB81F1859D}.exe
1084	{D64D6C0C-1740-4396-B276-6DD11EA7A68E}.exe
4652	{EE67BB58-F3AC-44ba-A1FC-71BA3A1764BE}.exe

Drops file in Windows directory 3 IoCs

description	ioc	Process
File created	C:\Windows\{22AC640F-705F-4563-9575-76EB81F1859D}.exe	2026-10-28_93d7c709f6d1d0c13a0865e80dc7e893_elex_wannacry.exe
File created	C:\Windows\{D64D6C0C-1740-4396-B276-6DD11EA7A68E}.exe	{22AC640F-705F-4563-9575-76EB81F1859D}.exe
File created	C:\Windows\{EE67BB58-F3AC-44ba-A1FC-71BA3A1764BE}.exe	{D64D6C0C-1740-4396-B276-6DD11EA7A68E}.exe

Executes a command shell one-liner 1 TTPs 3 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
4712	cmd.exe
3432	cmd.exe
3920	cmd.exe

System Location Discovery: System Language Discovery 1 TTPs 7 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	2026-10-28_93d7c709f6d1d0c13a0865e80dc7e893_elex_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{22AC640F-705F-4563-9575-76EB81F1859D}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{D64D6C0C-1740-4396-B276-6DD11EA7A68E}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{EE67BB58-F3AC-44ba-A1FC-71BA3A1764BE}.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	2328	2026-10-28_93d7c709f6d1d0c13a0865e80dc7e893_elex_wannacry.exe
Token: SeIncBasePriorityPrivilege	2052	{22AC640F-705F-4563-9575-76EB81F1859D}.exe
Token: SeIncBasePriorityPrivilege	1084	{D64D6C0C-1740-4396-B276-6DD11EA7A68E}.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2328 wrote to memory of 2052	2328	2026-10-28_93d7c709f6d1d0c13a0865e80dc7e893_elex_wannacry.exe	93
PID 2328 wrote to memory of 4712	2328	2026-10-28_93d7c709f6d1d0c13a0865e80dc7e893_elex_wannacry.exe	94
PID 2052 wrote to memory of 1084	2052	{22AC640F-705F-4563-9575-76EB81F1859D}.exe	95
PID 2052 wrote to memory of 3432	2052	{22AC640F-705F-4563-9575-76EB81F1859D}.exe	96
PID 1084 wrote to memory of 4652	1084	{D64D6C0C-1740-4396-B276-6DD11EA7A68E}.exe	99
PID 1084 wrote to memory of 3920	1084	{D64D6C0C-1740-4396-B276-6DD11EA7A68E}.exe	100

C:\Users\Admin\AppData\Local\Temp\2026-10-28_93d7c709f6d1d0c13a0865e80dc7e893_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-10-28_93d7c709f6d1d0c13a0865e80dc7e893_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:2328
- C:\Windows\{22AC640F-705F-4563-9575-76EB81F1859D}.exe
  C:\Windows\{22AC640F-705F-4563-9575-76EB81F1859D}.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:2052
- - C:\Windows\{D64D6C0C-1740-4396-B276-6DD11EA7A68E}.exe
    C:\Windows\{D64D6C0C-1740-4396-B276-6DD11EA7A68E}.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:1084
  - - C:\Windows\{EE67BB58-F3AC-44ba-A1FC-71BA3A1764BE}.exe
      C:\Windows\{EE67BB58-F3AC-44ba-A1FC-71BA3A1764BE}.exe
      4⤵
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      PID:4652
  - - C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c del C:\Windows\{D64D6~1.EXE > nul
      4⤵
      Executes a command shell one-liner
      System Location Discovery: System Language Discovery
      PID:3920
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c del C:\Windows\{22AC6~1.EXE > nul
    3⤵
    - Executes a command shell one-liner
    - System Location Discovery: System Language Discovery
    PID:3432
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c del C:\Users\Admin\AppData\Local\Temp\2026-1~1.EXE > nul
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  PID:4712

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

{22AC640F-705F-4563-9575-76EB81F1859D}.exe

Path C:\Windows\{22AC640F-705F-4563-9575-76EB81F1859D}.exe
Size 89KB
SHA256 50045c651517495813adc2f470e992cdd855be182d345077e705ae0806bda38a
MD5 5a7b21d1626abad5884d9abd08efb064
SHA1 5c88462e198f6fe182ddacf94d1b3688956adaa7
SHA512 fd3e84335cf9e61529f989931c8fde08a9c97d1f6ffeccafd2cc90f6bc0a9c6b9bd12c12201273dc2bc74fff831ea6daa793a3da70a9f70b40c271de8d33caf9
SSDEEP 768:Qvw9816vhKQLroq4/wQRNrfrunMxVFA3b7gls:YEGh0oql2unMxVS3HgO
TLSH
T1A393A33D5DDA1037E277D6B585F126E3FE66B983350A1D0E469343428D23B53AD8AC1C
MD5 SHA1 SHA512 SSDEEP TLSH

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{D64D6C0C-1740-4396-B276-6DD11EA7A68E}.exe

Path C:\Windows\{D64D6C0C-1740-4396-B276-6DD11EA7A68E}.exe
Size 89KB
SHA256 86908320cdd66051236ee5d2418210cd572a9bc9dd8f56ab9ed1e233a9824d9d
MD5 ee209ba311f69a15845dbad59f6f7af1
SHA1 10c8a5fecdb7a270990084de7b64e8159f426f2c
SHA512 7b04f4fe93fac87c87ff919778daca4790c08c222a7f3a8dffba01292c67794e4a3f17a9ff62bc633e9f099723c28fe52a01c5efc92c290533fcb22b9aa5e747
SSDEEP 768:Qvw9816vhKQLro04/wQRNrfrunMxVFA3b7gls:YEGh0o0l2unMxVS3HgO
TLSH
T1B893A33D9DDA1037E277D6B585F126E3FE66B983360A1D0E469343428D23B53AD8AC1C
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

{EE67BB58-F3AC-44ba-A1FC-71BA3A1764BE}.exe

Path C:\Windows\{EE67BB58-F3AC-44ba-A1FC-71BA3A1764BE}.exe
Size 89KB
SHA256 abee268b68ad74f85acb2a60ac33b0ee46b09e76bf99830f50a68454a09c2fc6
MD5 54c004ad7c9ff63e2a5c9d1b6bc2e2c8
SHA1 d33c91a7c4ec43d3b180d180a20e25a2b78820f0
SHA512 82a12d0a58d96641e109c2c07009cbfd37e36838046fcc9280fee49e8fa1d055203dbc8ca0109254138ca01b69ac2621c8f90a548411d73e2a2f03151136670b
SSDEEP 768:Qvw9816vhKQLrox4/wQRNrfrunMxVFA3b7gls:YEGh0oxl2unMxVS3HgO
TLSH
T18793A33D9DDA1037E277D6B585F126E3FE66B983360A1D0E469343428D23B53AD8AC1C
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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Downloads