bd357c966e4fc81882db0a18b13915abc3b24d80a7efa0d192d67743b4da2518

Analysis

max time kernel
148s
max time network
135s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260709-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
30/07/2026, 17:43

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General

Target
2026-07-30_51c9608bdd05e028591acb3bacddc7a5_elex_remcos_wannacry.exe
Size 46KB
Sample260730-wancssteme
SHA256 bd357c966e4fc81882db0a18b13915abc3b24d80a7efa0d192d67743b4da2518
MD5 51c9608bdd05e028591acb3bacddc7a5
SHA1 9b2bb21782188538e18ff6f61fd2b5664fd89111
SHA512 24ce9795ff181a161d3a5620048186ed6f916f94bfa63556b85d83e6c76a5f6258d19034c2456c99fbd24e9a288a4dee769a0afa37bc2db1430692c7118ce76f
SSDEEP 768:i96YcrtoDHUEWBGxsQz7cu1eQ47/TV+lw5jm/epzGTf/B7RVhYY+8mmr1z1:ioBSzUB2b1eDQw5jvATf/B73hvmmr51
TLSH
T14223E703BF0641B2D56502F006446B13EFFD5CDA0A49A277DB45C500BEFABAAD4A277E
MD5 SHA1 SHA512 SSDEEP TLSH

Score

7^/10

discovery execution persistence

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
3276	remcos.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3797332335-34111092-3597280141-1000\Software\Microsoft\Windows\CurrentVersion\Run\REMCOS = "\"C:\\Windows\\System32\\remcos.exe\""	2026-07-30_51c9608bdd05e028591acb3bacddc7a5_elex_remcos_wannacry.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\remcos.exe	2026-07-30_51c9608bdd05e028591acb3bacddc7a5_elex_remcos_wannacry.exe
File created	C:\Windows\SysWOW64\remcos.exe	remcos.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Executes a command shell one-liner 1 TTPs 1 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
4204	cmd.exe

System Location Discovery: System Language Discovery 1 TTPs 4 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	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	remcos.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-07-30_51c9608bdd05e028591acb3bacddc7a5_elex_remcos_wannacry.exe

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 1 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
3728	PING.EXE

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
3728	PING.EXE

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 800 wrote to memory of 4204	800	2026-07-30_51c9608bdd05e028591acb3bacddc7a5_elex_remcos_wannacry.exe	90
PID 4204 wrote to memory of 3728	4204	cmd.exe	92
PID 4204 wrote to memory of 3276	4204	cmd.exe	93

C:\Users\Admin\AppData\Local\Temp\2026-07-30_51c9608bdd05e028591acb3bacddc7a5_elex_remcos_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-07-30_51c9608bdd05e028591acb3bacddc7a5_elex_remcos_wannacry.exe"
1⤵
- Adds Run key to start application
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:800
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\install.bat" "
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4204
- - C:\Windows\SysWOW64\PING.EXE
    PING 127.0.0.1 -n 2
    3⤵
    - System Location Discovery: System Language Discovery
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:3728
- - C:\Windows\SysWOW64\remcos.exe
    "C:\Windows\System32\remcos.exe"
    3⤵
    - Executes dropped EXE
    - Drops file in System32 directory
    - System Location Discovery: System Language Discovery
    PID:3276

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

Windows Command Shell

T1059.003

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Remote System Discovery

T1018

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

System Network Configuration Discovery

T1016

Internet Connection Discovery

T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

install.bat

Path C:\Users\Admin\AppData\Local\Temp\install.bat
Size 81B
SHA256 58e2c2bc7b7cdaf27e338b7b9b110c3421a826693c93b3efc5601664acb51d8a
MD5 5762514c1ac39f76247acb1367b0bf32
SHA1 2df98c005e7ba438800bd27d0768ac4388b41fa9
SHA512 523df964fbc85b27e0f57d82218991507fbc4a55ed110a54897e055b6fb579332dcf2ceb0e754140adc774a52d5decf6b2ebc0bbf42eae990c02aa84279b09a4
TLSH
T19DA024710F1040F755130D344C4C7D75F101F0D550037414144F10D0CC330017CC1D10
MD5 SHA1 SHA512 TLSH

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remcos.exe

Path C:\Windows\SysWOW64\remcos.exe
Size 46KB
SHA256 bd357c966e4fc81882db0a18b13915abc3b24d80a7efa0d192d67743b4da2518
MD5 51c9608bdd05e028591acb3bacddc7a5
SHA1 9b2bb21782188538e18ff6f61fd2b5664fd89111
SHA512 24ce9795ff181a161d3a5620048186ed6f916f94bfa63556b85d83e6c76a5f6258d19034c2456c99fbd24e9a288a4dee769a0afa37bc2db1430692c7118ce76f
SSDEEP 768:i96YcrtoDHUEWBGxsQz7cu1eQ47/TV+lw5jm/epzGTf/B7RVhYY+8mmr1z1:ioBSzUB2b1eDQw5jvATf/B73hvmmr51
TLSH
T14223E703BF0641B2D56502F006446B13EFFD5CDA0A49A277DB45C500BEFABAAD4A277E
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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