stormser | fbdb80edc125473bb1936caaca71a8595fe4f1c051067aae6e06ce027fd70775

General

Target
2026-08-16_e24318edcd8c2faebc899e46ebcafa1a_elex_wannacry.exe
Size 89KB
Sample260816-b7cmcaxcrc
SHA256 fbdb80edc125473bb1936caaca71a8595fe4f1c051067aae6e06ce027fd70775
MD5 e24318edcd8c2faebc899e46ebcafa1a
SHA1 1d3824d0e81d687ab9f401d67013005be3b7f29e
SHA512 0a1ff1ba36d64cb7165999628bbd815736bcf7b2ac17112e2067e2d292f9dd1363848a1619cb4e0d1d7c5c86f56634a0bf624d7707491b0f2b7caf88ffc0bb6d
SSDEEP 768:Qvw9816vhKQLro54/wQRNrfrunMxVFA3b7gl:YEGh0o5l2unMxVS3Hg
TLSH
T1BA93B43D5DDA1037E277D6B485F126E3FE66B983360A1D0E46D243428D23B53AD86C1C
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 4 IoCs

resource	yara_rule
behavioral1/files/0x000300000001e6de-2.dat	family_stormser
behavioral1/files/0x0002000000022be1-6.dat	family_stormser
behavioral1/files/0x000f000000024484-10.dat	family_stormser
behavioral1/files/0x000700000002448a-14.dat	family_stormser

Boot or Logon Autostart Execution: Active Setup 2 TTPs 8 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\{E8B3B626-580B-4ac2-AA39-179293FB624C}	{8C2E1D55-B69C-478e-A176-3EAD0A089BFA}.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{E8B3B626-580B-4ac2-AA39-179293FB624C}\stubpath = "C:\\Windows\\{E8B3B626-580B-4ac2-AA39-179293FB624C}.exe"	{8C2E1D55-B69C-478e-A176-3EAD0A089BFA}.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{72E5052C-6D88-4c16-B5F4-1AC0BFDBFC83}	2026-08-16_e24318edcd8c2faebc899e46ebcafa1a_elex_wannacry.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{72E5052C-6D88-4c16-B5F4-1AC0BFDBFC83}\stubpath = "C:\\Windows\\{72E5052C-6D88-4c16-B5F4-1AC0BFDBFC83}.exe"	2026-08-16_e24318edcd8c2faebc899e46ebcafa1a_elex_wannacry.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{4F3B7A22-FFA2-4de0-B45B-77703E29E554}	{72E5052C-6D88-4c16-B5F4-1AC0BFDBFC83}.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{4F3B7A22-FFA2-4de0-B45B-77703E29E554}\stubpath = "C:\\Windows\\{4F3B7A22-FFA2-4de0-B45B-77703E29E554}.exe"	{72E5052C-6D88-4c16-B5F4-1AC0BFDBFC83}.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{8C2E1D55-B69C-478e-A176-3EAD0A089BFA}	{4F3B7A22-FFA2-4de0-B45B-77703E29E554}.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{8C2E1D55-B69C-478e-A176-3EAD0A089BFA}\stubpath = "C:\\Windows\\{8C2E1D55-B69C-478e-A176-3EAD0A089BFA}.exe"	{4F3B7A22-FFA2-4de0-B45B-77703E29E554}.exe

Executes dropped EXE 4 IoCs

pid	Process
4864	{72E5052C-6D88-4c16-B5F4-1AC0BFDBFC83}.exe
1644	{4F3B7A22-FFA2-4de0-B45B-77703E29E554}.exe
1660	{8C2E1D55-B69C-478e-A176-3EAD0A089BFA}.exe
3784	{E8B3B626-580B-4ac2-AA39-179293FB624C}.exe

Drops file in Windows directory 4 IoCs

description	ioc	Process
File created	C:\Windows\{72E5052C-6D88-4c16-B5F4-1AC0BFDBFC83}.exe	2026-08-16_e24318edcd8c2faebc899e46ebcafa1a_elex_wannacry.exe
File created	C:\Windows\{4F3B7A22-FFA2-4de0-B45B-77703E29E554}.exe	{72E5052C-6D88-4c16-B5F4-1AC0BFDBFC83}.exe
File created	C:\Windows\{8C2E1D55-B69C-478e-A176-3EAD0A089BFA}.exe	{4F3B7A22-FFA2-4de0-B45B-77703E29E554}.exe
File created	C:\Windows\{E8B3B626-580B-4ac2-AA39-179293FB624C}.exe	{8C2E1D55-B69C-478e-A176-3EAD0A089BFA}.exe

Executes a command shell one-liner 1 TTPs 4 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
1760	cmd.exe
4884	cmd.exe
3368	cmd.exe
3536	cmd.exe

System Location Discovery: System Language Discovery 1 TTPs 9 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	{8C2E1D55-B69C-478e-A176-3EAD0A089BFA}.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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{E8B3B626-580B-4ac2-AA39-179293FB624C}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-08-16_e24318edcd8c2faebc899e46ebcafa1a_elex_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{72E5052C-6D88-4c16-B5F4-1AC0BFDBFC83}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{4F3B7A22-FFA2-4de0-B45B-77703E29E554}.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	4736	2026-08-16_e24318edcd8c2faebc899e46ebcafa1a_elex_wannacry.exe
Token: SeIncBasePriorityPrivilege	4864	{72E5052C-6D88-4c16-B5F4-1AC0BFDBFC83}.exe
Token: SeIncBasePriorityPrivilege	1644	{4F3B7A22-FFA2-4de0-B45B-77703E29E554}.exe
Token: SeIncBasePriorityPrivilege	1660	{8C2E1D55-B69C-478e-A176-3EAD0A089BFA}.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 4736 wrote to memory of 4864	4736	2026-08-16_e24318edcd8c2faebc899e46ebcafa1a_elex_wannacry.exe	87
PID 4736 wrote to memory of 1760	4736	2026-08-16_e24318edcd8c2faebc899e46ebcafa1a_elex_wannacry.exe	88
PID 4864 wrote to memory of 1644	4864	{72E5052C-6D88-4c16-B5F4-1AC0BFDBFC83}.exe	93
PID 4864 wrote to memory of 4884	4864	{72E5052C-6D88-4c16-B5F4-1AC0BFDBFC83}.exe	94
PID 1644 wrote to memory of 1660	1644	{4F3B7A22-FFA2-4de0-B45B-77703E29E554}.exe	101
PID 1644 wrote to memory of 3368	1644	{4F3B7A22-FFA2-4de0-B45B-77703E29E554}.exe	102
PID 1660 wrote to memory of 3784	1660	{8C2E1D55-B69C-478e-A176-3EAD0A089BFA}.exe	105
PID 1660 wrote to memory of 3536	1660	{8C2E1D55-B69C-478e-A176-3EAD0A089BFA}.exe	106

C:\Users\Admin\AppData\Local\Temp\2026-08-16_e24318edcd8c2faebc899e46ebcafa1a_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-08-16_e24318edcd8c2faebc899e46ebcafa1a_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:4736
- C:\Windows\{72E5052C-6D88-4c16-B5F4-1AC0BFDBFC83}.exe
  C:\Windows\{72E5052C-6D88-4c16-B5F4-1AC0BFDBFC83}.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:4864
- - C:\Windows\{4F3B7A22-FFA2-4de0-B45B-77703E29E554}.exe
    C:\Windows\{4F3B7A22-FFA2-4de0-B45B-77703E29E554}.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:1644
  - - C:\Windows\{8C2E1D55-B69C-478e-A176-3EAD0A089BFA}.exe
      C:\Windows\{8C2E1D55-B69C-478e-A176-3EAD0A089BFA}.exe
      4⤵
      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:1660
    - - C:\Windows\{E8B3B626-580B-4ac2-AA39-179293FB624C}.exe
        
        C:\Windows\{E8B3B626-580B-4ac2-AA39-179293FB624C}.exe
        5⤵
        Executes dropped EXE
        System Location Discovery: System Language Discovery
        
        PID:3784
    - - C:\Windows\SysWOW64\cmd.exe
        
        C:\Windows\system32\cmd.exe /c del C:\Windows\{8C2E1~1.EXE > nul
        5⤵
        Executes a command shell one-liner
        System Location Discovery: System Language Discovery
        
        PID:3536
  - - C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c del C:\Windows\{4F3B7~1.EXE > nul
      4⤵
      Executes a command shell one-liner
      System Location Discovery: System Language Discovery
      PID:3368
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c del C:\Windows\{72E50~1.EXE > nul
    3⤵
    - Executes a command shell one-liner
    - System Location Discovery: System Language Discovery
    PID:4884
- 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:1760

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

Replay Monitor

Loading Replay Monitor...

Downloads

{4F3B7A22-FFA2-4de0-B45B-77703E29E554}.exe

Path C:\Windows\{4F3B7A22-FFA2-4de0-B45B-77703E29E554}.exe
Size 89KB
SHA256 872dac486a1688a070444f2779898272b58f8c73643883b1c27789d058cbfd55
MD5 e93b810f2e312a4795330ff56099b67c
SHA1 c5cff906c2b95fb8ccea5d5ff767c105aaf48877
SHA512 218efe7c5e67fe77f2f9f0c26251d46ffcc3563998383f5f7abba517a4638364368de6763033bbb3025050704dc7b6cfbf09ba8ec385133adc8e59cffefd1e64
SSDEEP 768:Qvw9816vhKQLro74/wQRNrfrunMxVFA3b7gl:YEGh0o7l2unMxVS3Hg
TLSH
T10393B43D5DDA1037E277D6B585F126E3FE66B983350A1D0E46D243428D23B53AD8AC1C
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

{72E5052C-6D88-4c16-B5F4-1AC0BFDBFC83}.exe

Path C:\Windows\{72E5052C-6D88-4c16-B5F4-1AC0BFDBFC83}.exe
Size 89KB
SHA256 7a5af20d215481a6a4df24076937b0455909162221d4b137d63a2a5bfc97a8f5
MD5 3e8fa2c803fa2238c0524b02d3e2eb9f
SHA1 67e18778cdd3cd0baf82ded41f5c4e322e3d5048
SHA512 08041705a57a03f68e739a763a9f8a2daf342e5fc216bc21044b3acccc16d0854aa1b1d250d34b232d905145aeca6de6248483ad1416778c78a2461976f9f450
SSDEEP 768:Qvw9816vhKQLroP4/wQRNrfrunMxVFA3b7gl:YEGh0oPl2unMxVS3Hg
TLSH
T1BE93B43D5DDA1037E277D6B585F126E3FE66B983360A1D0E46D243428D23B53AD86C1C
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

{8C2E1D55-B69C-478e-A176-3EAD0A089BFA}.exe

Path C:\Windows\{8C2E1D55-B69C-478e-A176-3EAD0A089BFA}.exe
Size 89KB
SHA256 a8273577750a55e6ca9ab814a1c16029ab87394e9f6ea85efd2358421192fbe3
MD5 b0d18c3e0350fa2dbf1717f391142caf
SHA1 144d5edf90f2d2c77f4677c9b425fad9d4e3af84
SHA512 71f07c70b6366787dc98a4db22c87f019d00f99bfb55faf2bb65b0cda034eee33f899ac484ba43ed25d8483e704cba38aa113e09e11dc126b8e7eedc450aa57d
SSDEEP 768:Qvw9816vhKQLroq4/wQRNrfrunMxVFA3b7gl:YEGh0oql2unMxVS3Hg
TLSH
T11E93B43D5DDA103BE277D6B585F126E3FE66B983390A1D0E469343428D23B53AD8AC1C
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

{E8B3B626-580B-4ac2-AA39-179293FB624C}.exe

Path C:\Windows\{E8B3B626-580B-4ac2-AA39-179293FB624C}.exe
Size 89KB
SHA256 6f75ed3ab3a5a91fe9af14097049f8f381bdf8aad95d3dfebe6cd397a3625fb1
MD5 d332f9efc6da054a887ddc5be44c8a98
SHA1 2218db33e3581b20bd304472983975851f62c794
SHA512 a8ae26aa2f2cec1715b36cb89b545dad196c532028370198e5eea8d3b43cbf4ca50c013d29ec0fa85d293692bb8dc94fbadd49b48f0b7c0aaf29a81531f39f19
SSDEEP 768:Qvw9816vhKQLro94/wQRNrfrunMxVFA3b7gl:YEGh0o9l2unMxVS3Hg
TLSH
T17A93B43D5DDA1037E277D6B585F126E3FE66B983360A1D0E46D243428D23B53AD86C1C
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

Replay Monitor

Loading Replay Monitor...

Downloads