stormser | 532bb647a75e7c7415f2322ad45894ec94be67726d0927e501081292ace7f10e

General

Target
2026-08-08_2e181232bf8b5e5cb236468832a89b27_elex_remcos_wannacry.exe
Size 60KB
Sample260809-amnnfaga52
SHA256 532bb647a75e7c7415f2322ad45894ec94be67726d0927e501081292ace7f10e
MD5 2e181232bf8b5e5cb236468832a89b27
SHA1 0d1f1345649b0c470565c690f431120091a668b5
SHA512 6792966e7ed57545a465b26467f39ac8a5ed9289daa16a30e7b481680dfd6dc7552fa5597b08e59e736e3da405816870987bb57b6a3a984692f5db9a4fafd502
SSDEEP 384:vbLwOs8AHsc4sMfwhKQLrosG4/CFsrdHWMZo:vvw9816vhKQLroT4/wQpWMZo
TLSH
T16D533B830F997CF2FB810175047A8BB992AB59D4D14FFE9BBF90CC194436651E83E60A
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/0x000300000001e68c-2.dat	family_stormser
behavioral1/files/0x0007000000024355-6.dat	family_stormser
behavioral1/files/0x0007000000024359-8.dat	family_stormser

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

resource	yara_rule
behavioral1/files/0x000300000001e68c-2.dat	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
behavioral1/files/0x0007000000024355-6.dat	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
behavioral1/files/0x0007000000024359-8.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
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{A7C921EF-207B-4864-AEB2-27F51ACF55DB}\stubpath = "C:\\Windows\\{A7C921EF-207B-4864-AEB2-27F51ACF55DB}.exe"	{1E0E0916-80A8-4fba-9310-92ADCFF3F842}.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{882DD1A8-64D7-4a75-B2C8-1040CA4A6651}	{A7C921EF-207B-4864-AEB2-27F51ACF55DB}.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{882DD1A8-64D7-4a75-B2C8-1040CA4A6651}\stubpath = "C:\\Windows\\{882DD1A8-64D7-4a75-B2C8-1040CA4A6651}.exe"	{A7C921EF-207B-4864-AEB2-27F51ACF55DB}.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{1E0E0916-80A8-4fba-9310-92ADCFF3F842}	2026-08-08_2e181232bf8b5e5cb236468832a89b27_elex_remcos_wannacry.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{1E0E0916-80A8-4fba-9310-92ADCFF3F842}\stubpath = "C:\\Windows\\{1E0E0916-80A8-4fba-9310-92ADCFF3F842}.exe"	2026-08-08_2e181232bf8b5e5cb236468832a89b27_elex_remcos_wannacry.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{A7C921EF-207B-4864-AEB2-27F51ACF55DB}	{1E0E0916-80A8-4fba-9310-92ADCFF3F842}.exe

Executes dropped EXE 3 IoCs

pid	Process
5032	{1E0E0916-80A8-4fba-9310-92ADCFF3F842}.exe
204	{A7C921EF-207B-4864-AEB2-27F51ACF55DB}.exe
2712	{882DD1A8-64D7-4a75-B2C8-1040CA4A6651}.exe

Drops file in Windows directory 3 IoCs

description	ioc	Process
File created	C:\Windows\{1E0E0916-80A8-4fba-9310-92ADCFF3F842}.exe	2026-08-08_2e181232bf8b5e5cb236468832a89b27_elex_remcos_wannacry.exe
File created	C:\Windows\{A7C921EF-207B-4864-AEB2-27F51ACF55DB}.exe	{1E0E0916-80A8-4fba-9310-92ADCFF3F842}.exe
File created	C:\Windows\{882DD1A8-64D7-4a75-B2C8-1040CA4A6651}.exe	{A7C921EF-207B-4864-AEB2-27F51ACF55DB}.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
1592	cmd.exe
4180	cmd.exe
552	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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{882DD1A8-64D7-4a75-B2C8-1040CA4A6651}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-08-08_2e181232bf8b5e5cb236468832a89b27_elex_remcos_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{1E0E0916-80A8-4fba-9310-92ADCFF3F842}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{A7C921EF-207B-4864-AEB2-27F51ACF55DB}.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	2864	2026-08-08_2e181232bf8b5e5cb236468832a89b27_elex_remcos_wannacry.exe
Token: SeIncBasePriorityPrivilege	5032	{1E0E0916-80A8-4fba-9310-92ADCFF3F842}.exe
Token: SeIncBasePriorityPrivilege	204	{A7C921EF-207B-4864-AEB2-27F51ACF55DB}.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2864 wrote to memory of 5032	2864	2026-08-08_2e181232bf8b5e5cb236468832a89b27_elex_remcos_wannacry.exe	89
PID 2864 wrote to memory of 1592	2864	2026-08-08_2e181232bf8b5e5cb236468832a89b27_elex_remcos_wannacry.exe	90
PID 5032 wrote to memory of 204	5032	{1E0E0916-80A8-4fba-9310-92ADCFF3F842}.exe	96
PID 5032 wrote to memory of 4180	5032	{1E0E0916-80A8-4fba-9310-92ADCFF3F842}.exe	97
PID 204 wrote to memory of 2712	204	{A7C921EF-207B-4864-AEB2-27F51ACF55DB}.exe	99
PID 204 wrote to memory of 552	204	{A7C921EF-207B-4864-AEB2-27F51ACF55DB}.exe	100

C:\Users\Admin\AppData\Local\Temp\2026-08-08_2e181232bf8b5e5cb236468832a89b27_elex_remcos_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-08-08_2e181232bf8b5e5cb236468832a89b27_elex_remcos_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:2864
- C:\Windows\{1E0E0916-80A8-4fba-9310-92ADCFF3F842}.exe
  C:\Windows\{1E0E0916-80A8-4fba-9310-92ADCFF3F842}.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:5032
- - C:\Windows\{A7C921EF-207B-4864-AEB2-27F51ACF55DB}.exe
    C:\Windows\{A7C921EF-207B-4864-AEB2-27F51ACF55DB}.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:204
  - - C:\Windows\{882DD1A8-64D7-4a75-B2C8-1040CA4A6651}.exe
      C:\Windows\{882DD1A8-64D7-4a75-B2C8-1040CA4A6651}.exe
      4⤵
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      PID:2712
  - - C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c del C:\Windows\{A7C92~1.EXE > nul
      4⤵
      Executes a command shell one-liner
      System Location Discovery: System Language Discovery
      PID:552
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c del C:\Windows\{1E0E0~1.EXE > nul
    3⤵
    - Executes a command shell one-liner
    - System Location Discovery: System Language Discovery
    PID:4180
- 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:1592

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

{1E0E0916-80A8-4fba-9310-92ADCFF3F842}.exe

Path C:\Windows\{1E0E0916-80A8-4fba-9310-92ADCFF3F842}.exe
Size 60KB
SHA256 d57e863cb8637eaa5f84ec1ac96eac472a7a6209b725ca773b0bbc49d20e6d04
MD5 9ce8867cfb99e067172c7f1e1bc99f12
SHA1 0482d8aed1df44acf05eac2974d25353d518e244
SHA512 78c643f491a3feedb254fec181ae5ee5b932c32bb72c50a46a09e77180b4aa5e1aa93cb3510fd22718d2bb35b2ec997b2ff3417694fd8e61a10a08ce9feb317d
SSDEEP 384:vbLwOs8AHsc4sMfwhKQLrop4/CFsrdHWMZo:vvw9816vhKQLrop4/wQpWMZo
TLSH
T15B533B830F997CF2FB810175047A8BB992AB59D4D14FFE9BBF90CC194436651E83E60A
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

{882DD1A8-64D7-4a75-B2C8-1040CA4A6651}.exe

Path C:\Windows\{882DD1A8-64D7-4a75-B2C8-1040CA4A6651}.exe
Size 60KB
SHA256 2b7dfd540a8ec65cc783a32ee1f596961e517a77258a7fa288595fbfd5c6b0a5
MD5 d0fccb31ff45a65bc7b23dec42b13940
SHA1 92fef718d0bfbc3a42712e655d1dfafd1f4c57a9
SHA512 d1ff5ca676377571a27df409b44b20d4b3ade1fe3053095db203979d0a56be360abeba5cf3d1c0614474828f8d567c113cb5d34090545212979a599999a6ec27
SSDEEP 384:vbLwOs8AHsc4sMfwhKQLrom4/CFsrdHWMZo:vvw9816vhKQLrom4/wQpWMZo
TLSH
T1CE534B830F997CF2FB810175047A8BB992AB59D4D14FFE9BBF90CC194436651E83E60A
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

{A7C921EF-207B-4864-AEB2-27F51ACF55DB}.exe

Path C:\Windows\{A7C921EF-207B-4864-AEB2-27F51ACF55DB}.exe
Size 60KB
SHA256 48eb8760fec88217cf593b485cac14ee68750a26f008640a12768638cea739b0
MD5 fb5ce33ba938d84b3e96d804850a971b
SHA1 7169ee4b23732c509858bc40300ad14e19c708b6
SHA512 14c2e5f994b0f70fc3e97eb58690fe1743984321cae8137e627edb9bda49a2228f66536b4d4469240e9b71db573c2f7733d2fed6b10c8fb25b14646ed2e2d7ef
SSDEEP 384:vbLwOs8AHsc4sMfwhKQLroV4/CFsrdHWMZo:vvw9816vhKQLroV4/wQpWMZo
TLSH
T16D533B830F997CF2FB810175047A8BB9926B59D4D14FFE9BBF90CC194436691E83E60A
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