stormser | 59d6513748cf1c41498edd7d50fe570a83b6cad498c8805d81c744b61ec510b9

General

Target
2026-07-07_cbecd7ec08823e09461a340cd76d4b9b_elex_wannacry.exe
Size 76KB
Sample260707-s2barsgw2t
SHA256 59d6513748cf1c41498edd7d50fe570a83b6cad498c8805d81c744b61ec510b9
MD5 cbecd7ec08823e09461a340cd76d4b9b
SHA1 22075736704180d9594079ece79fffc7c8f5c1dd
SHA512 7b88794315cedf2bcc31e4d07047269296c15af74f29c587f40dce25b02bca23b806b43b4869b8a5076bfe994336925740ccb500d11ec95c63ae60f6c7d3bc0e
SSDEEP 768:vvw9816vhKQLroBx4/wQxWMZQcpFM1FgDagXP2TyS1tl7lfqvocqcdT3WVd:nEGh0oBxlwWMZQcpmgDagIyS1loL7Wr
TLSH
T147735B02A684B5F2EBAC0134B19F0F7E963796B1C0D9682F6F634DA55862C63F431E17
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

discovery 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
behavioral2/files/0x000e00000001c413-3.dat	family_stormser
behavioral2/files/0x000e00000001c414-8.dat	family_stormser

Detects Windows executables referencing non-Windows User-Agents 2 IoCs

resource	yara_rule
behavioral2/files/0x000e00000001c413-3.dat	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
behavioral2/files/0x000e00000001c414-8.dat	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA

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\{E8352ABD-27E8-4358-A567-FED5AA51FF4C}	2026-07-07_cbecd7ec08823e09461a340cd76d4b9b_elex_wannacry.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{E8352ABD-27E8-4358-A567-FED5AA51FF4C}\stubpath = "C:\\Windows\\{E8352ABD-27E8-4358-A567-FED5AA51FF4C}.exe"	2026-07-07_cbecd7ec08823e09461a340cd76d4b9b_elex_wannacry.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{B9EEFFA3-22ED-4c16-81A7-F892019DA1F8}	{E8352ABD-27E8-4358-A567-FED5AA51FF4C}.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{B9EEFFA3-22ED-4c16-81A7-F892019DA1F8}\stubpath = "C:\\Windows\\{B9EEFFA3-22ED-4c16-81A7-F892019DA1F8}.exe"	{E8352ABD-27E8-4358-A567-FED5AA51FF4C}.exe

Executes dropped EXE 3 IoCs

pid	Process
2748	{E8352ABD-27E8-4358-A567-FED5AA51FF4C}.exe
2192	{B9EEFFA3-22ED-4c16-81A7-F892019DA1F8}.exe
2824	{B9EEFFA3-22ED-4c16-81A7-F892019DA1F8}.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\{E8352ABD-27E8-4358-A567-FED5AA51FF4C}.exe	2026-07-07_cbecd7ec08823e09461a340cd76d4b9b_elex_wannacry.exe
File created	C:\Windows\{B9EEFFA3-22ED-4c16-81A7-F892019DA1F8}.exe	{E8352ABD-27E8-4358-A567-FED5AA51FF4C}.exe

System Location Discovery: System Language Discovery 1 TTPs 6 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	{E8352ABD-27E8-4358-A567-FED5AA51FF4C}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{B9EEFFA3-22ED-4c16-81A7-F892019DA1F8}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{B9EEFFA3-22ED-4c16-81A7-F892019DA1F8}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-07-07_cbecd7ec08823e09461a340cd76d4b9b_elex_wannacry.exe

Modifies registry class 3 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\Software\Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppModel\Deployment\Package\*\S-1-5-21-2626306573-1585762579-411806764-1000\{02019C43-3FAD-461C-8198-B1E6DD2A6B3B}	explorer.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{A8CDFF1C-4878-43be-B5FD-F8091C1C60D0}\Instance\	explorer.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{B4BFCC3A-DB2C-424C-B029-7FE99A87C641}\Instance\	explorer.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	2492	2026-07-07_cbecd7ec08823e09461a340cd76d4b9b_elex_wannacry.exe
Token: SeIncBasePriorityPrivilege	2748	{E8352ABD-27E8-4358-A567-FED5AA51FF4C}.exe
Token: SeShutdownPrivilege	5980	explorer.exe
Token: SeCreatePagefilePrivilege	5980	explorer.exe
Token: SeShutdownPrivilege	5980	explorer.exe
Token: SeCreatePagefilePrivilege	5980	explorer.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
4240	sihost.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2492 wrote to memory of 2748	2492	2026-07-07_cbecd7ec08823e09461a340cd76d4b9b_elex_wannacry.exe	88
PID 2492 wrote to memory of 6064	2492	2026-07-07_cbecd7ec08823e09461a340cd76d4b9b_elex_wannacry.exe	89
PID 2748 wrote to memory of 2192	2748	{E8352ABD-27E8-4358-A567-FED5AA51FF4C}.exe	90
PID 2748 wrote to memory of 2032	2748	{E8352ABD-27E8-4358-A567-FED5AA51FF4C}.exe	91
PID 4240 wrote to memory of 5980	4240	sihost.exe	97
PID 5980 wrote to memory of 2824	5980	explorer.exe	98

C:\Users\Admin\AppData\Local\Temp\2026-07-07_cbecd7ec08823e09461a340cd76d4b9b_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-07-07_cbecd7ec08823e09461a340cd76d4b9b_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:2492
- C:\Windows\{E8352ABD-27E8-4358-A567-FED5AA51FF4C}.exe
  C:\Windows\{E8352ABD-27E8-4358-A567-FED5AA51FF4C}.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:2748
- - C:\Windows\{B9EEFFA3-22ED-4c16-81A7-F892019DA1F8}.exe
    C:\Windows\{B9EEFFA3-22ED-4c16-81A7-F892019DA1F8}.exe
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:2192
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c del C:\Windows\{E8352~1.EXE > nul
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2032
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c del C:\Users\Admin\AppData\Local\Temp\2026-0~1.EXE > nul
  2⤵
  - System Location Discovery: System Language Discovery
  PID:6064

C:\Windows\system32\sihost.exe
sihost.exe
1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:4240
- C:\Windows\explorer.exe
  explorer.exe /LOADSAVEDWINDOWS
  2⤵
  - Modifies registry class
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:5980
- - C:\Windows\{B9EEFFA3-22ED-4c16-81A7-F892019DA1F8}.exe
    "C:\Windows\{B9EEFFA3-22ED-4c16-81A7-F892019DA1F8}.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:2824

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

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

{B9EEFFA3-22ED-4c16-81A7-F892019DA1F8}.exe

Path C:\Windows\{B9EEFFA3-22ED-4c16-81A7-F892019DA1F8}.exe
Size 76KB
SHA256 a6bd99855b51a42589f02d6be534f95fe16cef4821a0f143787118d4f5116741
MD5 b8896d835f19e407645a0340c4a40bf7
SHA1 ede0cc3aaca02e9d0ba75271a9c7fd21507cf174
SHA512 f34d741aa7b450a1c5850cbfdbe24e3631562c6c4733cccd06e923b6d9edede1f360b3358372463c1496636afaf8326725d8e7d28479cd5ce2d33c89fbe2f27f
SSDEEP 768:vvw9816vhKQLro+x4/wQxWMZQcpFM1FgDagXP2TyS1tl7lfqvocqcdT3WVd:nEGh0o+xlwWMZQcpmgDagIyS1loL7Wr
TLSH
T198735B02A684B5F2EBAC0134B19F0F7E963796B1C0D9682F6F634DA55862C63F431E17
MD5 SHA1 SHA512 SSDEEP TLSH

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{E8352ABD-27E8-4358-A567-FED5AA51FF4C}.exe

Path C:\Windows\{E8352ABD-27E8-4358-A567-FED5AA51FF4C}.exe
Size 76KB
SHA256 08aae95639951367f8716a77158b0752a6944893b8039c04606853edf4decacf
MD5 7304753ad353241210b71b550de27d08
SHA1 e3aea76407c84862d318cc766a028dbc8c8515c5
SHA512 0cc1af372a785e84fc573996f1f70dd4ee5e967243cb082eb7ba1cc7de4c713313b6eec0244704960c1d9ca0c88ab13a752d11fe1d902644e120ae4de8ec8537
SSDEEP 768:vvw9816vhKQLroCx4/wQxWMZQcpFM1FgDagXP2TyS1tl7lfqvocqcdT3WVd:nEGh0oCxlwWMZQcpmgDagIyS1loL7Wr
TLSH
T166735B02A684B5F2EBAC0134B19F0F7E963796B1C0D9682F6F634DA55862C63F431E17
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