stormser | ac27c30412ba3d0982013bbc28be7f6f8f43de692fdbdbe809ab8210a9d8be7c

General

Target
2026-07-20_97402d82d73165fec623996ec1fb669d_elex_wannacry.exe
Size 60KB
Sample260720-da3tdac13p
SHA256 ac27c30412ba3d0982013bbc28be7f6f8f43de692fdbdbe809ab8210a9d8be7c
MD5 97402d82d73165fec623996ec1fb669d
SHA1 be98240860b524961cda729393681245683640b7
SHA512 8f5d619da855cf9b37915cabcb816a76727afa796c7f4e3e9f26c7ff9d7c72943b40ac8e0600afa69399550c21b891f66f1052ae64fc77fe937a030d09f5bd96
SSDEEP 384:vbLwOs8AHsc4sMfwhKQLroG4/CFsrdHWMZo:vvw9816vhKQLroG4/wQpWMZo
TLSH
T17D534C830F997CF2FB810175047A8BB992AB59D4D14FFE9BBF90CC194436651E83E60A
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 5 IoCs

resource	yara_rule
behavioral1/files/0x00030000000006d1-2.dat	family_stormser
behavioral1/files/0x0006000000016864-6.dat	family_stormser
behavioral1/files/0x000600000001e0f6-10.dat	family_stormser
behavioral1/files/0x000500000001e42a-14.dat	family_stormser
behavioral1/files/0x0008000000024591-18.dat	family_stormser

Detects Windows executables referencing non-Windows User-Agents 5 IoCs

resource	yara_rule
behavioral1/files/0x00030000000006d1-2.dat	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
behavioral1/files/0x0006000000016864-6.dat	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
behavioral1/files/0x000600000001e0f6-10.dat	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
behavioral1/files/0x000500000001e42a-14.dat	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
behavioral1/files/0x0008000000024591-18.dat	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA

Boot or Logon Autostart Execution: Active Setup 2 TTPs 10 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\{321B4702-D4D4-43df-9E00-C1015664EDD0}\stubpath = "C:\\Windows\\{321B4702-D4D4-43df-9E00-C1015664EDD0}.exe"	{521E2CE4-5C4F-4533-9FD8-E79287B2BBBA}.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{1887B950-A1D4-4fc3-A7A5-5C6D92DD1343}	{321B4702-D4D4-43df-9E00-C1015664EDD0}.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{1887B950-A1D4-4fc3-A7A5-5C6D92DD1343}\stubpath = "C:\\Windows\\{1887B950-A1D4-4fc3-A7A5-5C6D92DD1343}.exe"	{321B4702-D4D4-43df-9E00-C1015664EDD0}.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{6511C67B-3E38-4869-9E47-5376BBC63464}\stubpath = "C:\\Windows\\{6511C67B-3E38-4869-9E47-5376BBC63464}.exe"	{1887B950-A1D4-4fc3-A7A5-5C6D92DD1343}.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{2135295A-2922-4d33-BC8E-712D174590DF}	2026-07-20_97402d82d73165fec623996ec1fb669d_elex_wannacry.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{2135295A-2922-4d33-BC8E-712D174590DF}\stubpath = "C:\\Windows\\{2135295A-2922-4d33-BC8E-712D174590DF}.exe"	2026-07-20_97402d82d73165fec623996ec1fb669d_elex_wannacry.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{521E2CE4-5C4F-4533-9FD8-E79287B2BBBA}	{2135295A-2922-4d33-BC8E-712D174590DF}.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{521E2CE4-5C4F-4533-9FD8-E79287B2BBBA}\stubpath = "C:\\Windows\\{521E2CE4-5C4F-4533-9FD8-E79287B2BBBA}.exe"	{2135295A-2922-4d33-BC8E-712D174590DF}.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{6511C67B-3E38-4869-9E47-5376BBC63464}	{1887B950-A1D4-4fc3-A7A5-5C6D92DD1343}.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{321B4702-D4D4-43df-9E00-C1015664EDD0}	{521E2CE4-5C4F-4533-9FD8-E79287B2BBBA}.exe

Executes dropped EXE 5 IoCs

pid	Process
5112	{2135295A-2922-4d33-BC8E-712D174590DF}.exe
4324	{521E2CE4-5C4F-4533-9FD8-E79287B2BBBA}.exe
2296	{321B4702-D4D4-43df-9E00-C1015664EDD0}.exe
4764	{1887B950-A1D4-4fc3-A7A5-5C6D92DD1343}.exe
1244	{6511C67B-3E38-4869-9E47-5376BBC63464}.exe

Drops file in Windows directory 5 IoCs

description	ioc	Process
File created	C:\Windows\{521E2CE4-5C4F-4533-9FD8-E79287B2BBBA}.exe	{2135295A-2922-4d33-BC8E-712D174590DF}.exe
File created	C:\Windows\{321B4702-D4D4-43df-9E00-C1015664EDD0}.exe	{521E2CE4-5C4F-4533-9FD8-E79287B2BBBA}.exe
File created	C:\Windows\{1887B950-A1D4-4fc3-A7A5-5C6D92DD1343}.exe	{321B4702-D4D4-43df-9E00-C1015664EDD0}.exe
File created	C:\Windows\{6511C67B-3E38-4869-9E47-5376BBC63464}.exe	{1887B950-A1D4-4fc3-A7A5-5C6D92DD1343}.exe
File created	C:\Windows\{2135295A-2922-4d33-BC8E-712D174590DF}.exe	2026-07-20_97402d82d73165fec623996ec1fb669d_elex_wannacry.exe

Executes a command shell one-liner 1 TTPs 5 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
3952	cmd.exe
4912	cmd.exe
4836	cmd.exe
3028	cmd.exe
2944	cmd.exe

System Location Discovery: System Language Discovery 1 TTPs 11 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	{2135295A-2922-4d33-BC8E-712D174590DF}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{521E2CE4-5C4F-4533-9FD8-E79287B2BBBA}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{321B4702-D4D4-43df-9E00-C1015664EDD0}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{1887B950-A1D4-4fc3-A7A5-5C6D92DD1343}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{6511C67B-3E38-4869-9E47-5376BBC63464}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-07-20_97402d82d73165fec623996ec1fb669d_elex_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	3816	2026-07-20_97402d82d73165fec623996ec1fb669d_elex_wannacry.exe
Token: SeIncBasePriorityPrivilege	5112	{2135295A-2922-4d33-BC8E-712D174590DF}.exe
Token: SeIncBasePriorityPrivilege	4324	{521E2CE4-5C4F-4533-9FD8-E79287B2BBBA}.exe
Token: SeIncBasePriorityPrivilege	2296	{321B4702-D4D4-43df-9E00-C1015664EDD0}.exe
Token: SeIncBasePriorityPrivilege	4764	{1887B950-A1D4-4fc3-A7A5-5C6D92DD1343}.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 3816 wrote to memory of 5112	3816	2026-07-20_97402d82d73165fec623996ec1fb669d_elex_wannacry.exe	88
PID 3816 wrote to memory of 3952	3816	2026-07-20_97402d82d73165fec623996ec1fb669d_elex_wannacry.exe	89
PID 5112 wrote to memory of 4324	5112	{2135295A-2922-4d33-BC8E-712D174590DF}.exe	90
PID 5112 wrote to memory of 4912	5112	{2135295A-2922-4d33-BC8E-712D174590DF}.exe	91
PID 4324 wrote to memory of 2296	4324	{521E2CE4-5C4F-4533-9FD8-E79287B2BBBA}.exe	95
PID 4324 wrote to memory of 4836	4324	{521E2CE4-5C4F-4533-9FD8-E79287B2BBBA}.exe	96
PID 2296 wrote to memory of 4764	2296	{321B4702-D4D4-43df-9E00-C1015664EDD0}.exe	104
PID 2296 wrote to memory of 3028	2296	{321B4702-D4D4-43df-9E00-C1015664EDD0}.exe	105
PID 4764 wrote to memory of 1244	4764	{1887B950-A1D4-4fc3-A7A5-5C6D92DD1343}.exe	106
PID 4764 wrote to memory of 2944	4764	{1887B950-A1D4-4fc3-A7A5-5C6D92DD1343}.exe	107

C:\Users\Admin\AppData\Local\Temp\2026-07-20_97402d82d73165fec623996ec1fb669d_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-07-20_97402d82d73165fec623996ec1fb669d_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:3816
- C:\Windows\{2135295A-2922-4d33-BC8E-712D174590DF}.exe
  C:\Windows\{2135295A-2922-4d33-BC8E-712D174590DF}.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:5112
- - C:\Windows\{521E2CE4-5C4F-4533-9FD8-E79287B2BBBA}.exe
    C:\Windows\{521E2CE4-5C4F-4533-9FD8-E79287B2BBBA}.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:4324
  - - C:\Windows\{321B4702-D4D4-43df-9E00-C1015664EDD0}.exe
      C:\Windows\{321B4702-D4D4-43df-9E00-C1015664EDD0}.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:2296
    - - C:\Windows\{1887B950-A1D4-4fc3-A7A5-5C6D92DD1343}.exe
        
        C:\Windows\{1887B950-A1D4-4fc3-A7A5-5C6D92DD1343}.exe
        5⤵
        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:4764
      - C:\Windows\{6511C67B-3E38-4869-9E47-5376BBC63464}.exe
        
        C:\Windows\{6511C67B-3E38-4869-9E47-5376BBC63464}.exe
        6⤵
        Executes dropped EXE
        System Location Discovery: System Language Discovery
        
        PID:1244
      - C:\Windows\SysWOW64\cmd.exe
        
        C:\Windows\system32\cmd.exe /c del C:\Windows\{1887B~1.EXE > nul
        6⤵
        Executes a command shell one-liner
        System Location Discovery: System Language Discovery
        
        PID:2944
    - - C:\Windows\SysWOW64\cmd.exe
        
        C:\Windows\system32\cmd.exe /c del C:\Windows\{321B4~1.EXE > nul
        5⤵
        Executes a command shell one-liner
        System Location Discovery: System Language Discovery
        
        PID:3028
  - - C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c del C:\Windows\{521E2~1.EXE > nul
      4⤵
      Executes a command shell one-liner
      System Location Discovery: System Language Discovery
      PID:4836
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c del C:\Windows\{21352~1.EXE > nul
    3⤵
    - Executes a command shell one-liner
    - System Location Discovery: System Language Discovery
    PID:4912
- 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:3952

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

{1887B950-A1D4-4fc3-A7A5-5C6D92DD1343}.exe

Path C:\Windows\{1887B950-A1D4-4fc3-A7A5-5C6D92DD1343}.exe
Size 60KB
SHA256 dcb722db9e4040bb306948ab1beed70a2033e47edb4b97625faf8ce29e0f373d
MD5 0bc34b4c8eb3e34022735fbb10e922c0
SHA1 b653740a99b2bdc65134b686ea0e4b27cf0c8d38
SHA512 91f02e2717e391e9114aa98154ebdcc8a3bc9f1e08b1cf2b9618be7a6babbfca92b442d65437ba77cb1407f07e8cb2ef334285549b3dde678ff207cfa12438a1
SSDEEP 384:vbLwOs8AHsc4sMfwhKQLroP4/CFsrdHWMZo:vvw9816vhKQLroP4/wQpWMZo
TLSH
T1A2533B830F997CF2FB810175047A8BB992AB59D4D14FFE9BBF90CC194436651E83E60A
MD5 SHA1 SHA512 SSDEEP TLSH

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{2135295A-2922-4d33-BC8E-712D174590DF}.exe

Path C:\Windows\{2135295A-2922-4d33-BC8E-712D174590DF}.exe
Size 60KB
SHA256 485222d2c0a7d52205eed52c294b61488e5635a6f00d73faa4c4272b4f9f2d62
MD5 34e48b1e6fd6404f7c4e02d1134c3ac8
SHA1 b0186a6ee5916981d93522fec656e24b9a066ccd
SHA512 2d144b83831ddb1fa51ea8a47174cc8224d17a2474f4555f0f5b204c6414537ea0d9b4b34c402f634285b8cba2ccb3ec0c316f117e4ae64d6390b3d091c7f384
SSDEEP 384:vbLwOs8AHsc4sMfwhKQLroU4/CFsrdHWMZo:vvw9816vhKQLroU4/wQpWMZo
TLSH
T14B534B830F997CF2FB810175043A8BB992AB59D4D14FFE9BBF90CC194436641E83E60A
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

{321B4702-D4D4-43df-9E00-C1015664EDD0}.exe

Path C:\Windows\{321B4702-D4D4-43df-9E00-C1015664EDD0}.exe
Size 60KB
SHA256 ba22663ecb5e604b4edbd893089aa3e0ffeb8ac113ab78fe096894d9b951d17f
MD5 d39ff68cf1fdc12efaaa5c33a8201ba0
SHA1 a857fde0b02b169d7a368809d025924062c996f1
SHA512 c6882288d0240e34dbb4ccbd1b6a0631b7b4ef3045f8982119474b7d6a4b449883aeaed2bb49398fdbd292ae4b58835231a4dd9c65404245c78829e1c571dec0
SSDEEP 384:vbLwOs8AHsc4sMfwhKQLroa4/CFsrdHWMZo:vvw9816vhKQLroa4/wQpWMZo
TLSH
T123534B830F997CF2F7810175043A8B7992AB59D4D14FFE9BBF90CC194436691E83E60A
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

{521E2CE4-5C4F-4533-9FD8-E79287B2BBBA}.exe

Path C:\Windows\{521E2CE4-5C4F-4533-9FD8-E79287B2BBBA}.exe
Size 60KB
SHA256 fd0af8ccfc2cf2672d5677339b8b3425ca79c3f78516f29b66abff74525290f3
MD5 562dc17c089d02f7203b3149aba70d38
SHA1 a4446c0617d3e3dde98f203c514da9e2e425d5ef
SHA512 4ee1ca73a0d4c45d175a12a38bbecb3218c1d8419b778996157acb42fdb9b0b6fe8805f17c1b77754222c21283dfa5e20ba9e429b14ad4d3257d9f7551e61428
SSDEEP 384:vbLwOs8AHsc4sMfwhKQLroR4/CFsrdHWMZo:vvw9816vhKQLroR4/wQpWMZo
TLSH
T1D1533B830F997CF2F7810175047A8B7992AB59D4D14FFE9BBF90CC194436691E83E60A
MD5 SHA1 SHA512 SSDEEP TLSH

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{6511C67B-3E38-4869-9E47-5376BBC63464}.exe

Path C:\Windows\{6511C67B-3E38-4869-9E47-5376BBC63464}.exe
Size 60KB
SHA256 fbc9ca63d59fe8b14eee85afa725d314fc69b46a4541a9d6ea2befe4d5b59204
MD5 a6fd7ca40c60aedff5cdb9a48ab0d8f2
SHA1 a679b97dc18ba51a3e11e3fd01a19dfb90192021
SHA512 005b63e6aa086ba7577b71eeb10178236a612a1d7c5911bf1f1b0314128ceb043a3947b818c030bc9819cfd9e73583dcce7441344d793d88e3e0d59f033f2112
SSDEEP 384:vbLwOs8AHsc4sMfwhKQLrogj4/CFsrdHWMZo:vvw9816vhKQLro+4/wQpWMZo
TLSH
T160533B834F997CF2FB810175043A8B7992AB59D4D14FFE9BBF90CC194436651E83E60A
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