remcos | 4084a7923a67d7e454c805ded8e62d0f6dc54718637ed34eefeaf5d0f50bba78

Analysis

max time kernel
149s
max time network
150s
platform
windows11-21h2_x64
resource
win11-20260513-en
resource tags

arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows
submitted
24/05/2026, 23:39

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
tmprwukzrnj.exe
Size 744KB
Sample260524-3npw4scw21
SHA256 4084a7923a67d7e454c805ded8e62d0f6dc54718637ed34eefeaf5d0f50bba78
MD5 74712a49a0203f243e8e06909eb6677b
SHA1 1b60d1e0a343bdd972c780b31766b8d106f508c3
SHA512 7cfee4dddac554374f84884336de8208734d33323edf9db7ac775fbc9c3ecfed6974dba7a1513f1da3dd74b875cb9b3873bd0b273701726d0aa83c1a680b4142
SSDEEP 6144:r8Xq4SO5Zj+P1joXqlo+XAw3JJigTqen7GJ5w+yXCd7sC1B:r8XVSp9jSqlx7iM97G03XCd4C1
TLSH
T15CF4BECEB2846C2DFB5D41717E14885A472A6CF12960D47A311BBBCC2BF24D25FB0E99
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

discovery execution remcos persistence rat

Malware Config

Signatures

Family: Remcos
Remcos is a closed-source remote control and surveillance software.
rat remcos

Executes dropped EXE 2 IoCs

pid	Process
1852	Highflying.exe
3404	Highflying.exe

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 5 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	Highflying.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Highflying.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	tmprwukzrnj.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
2196	schtasks.exe

Suspicious use of FindShellTrayWindow 6 IoCs

pid	Process
4624	tmprwukzrnj.exe
4624	tmprwukzrnj.exe
1852	Highflying.exe
1852	Highflying.exe
3404	Highflying.exe
3404	Highflying.exe

Suspicious use of SendNotifyMessage 6 IoCs

pid	Process
4624	tmprwukzrnj.exe
4624	tmprwukzrnj.exe
1852	Highflying.exe
1852	Highflying.exe
3404	Highflying.exe
3404	Highflying.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
4624	tmprwukzrnj.exe
1852	Highflying.exe
3404	Highflying.exe
3404	Highflying.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4624 wrote to memory of 2196	4624	tmprwukzrnj.exe	80
PID 4624 wrote to memory of 2208	4624	tmprwukzrnj.exe	84
PID 3404 wrote to memory of 1408	3404	Highflying.exe	87

C:\Users\Admin\AppData\Local\Temp\tmprwukzrnj.exe
"C:\Users\Admin\AppData\Local\Temp\tmprwukzrnj.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4624
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /SC MINUTE /TN "Brokeress2" /TR "C:\Users\Admin\AppData\Roaming\Highflying.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2196
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /run /tn "Brokeress2"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2208

C:\Users\Admin\AppData\Roaming\Highflying.exe
C:\Users\Admin\AppData\Roaming\Highflying.exe
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of SetWindowsHookEx
PID:1852

C:\Users\Admin\AppData\Roaming\Highflying.exe
C:\Users\Admin\AppData\Roaming\Highflying.exe
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3404
- C:\Windows\SysWOW64\svchost.exe
  C:\Windows\SysWOW64\svchost.exe
  2⤵
  PID:1408

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

Highflying.exe

Path C:\Users\Admin\AppData\Roaming\Highflying.exe
Size 744KB
SHA256 01dc4c3aee7aee84c99318d1a0fbb6ff65c683a16637171e3198ee987c6150ca
MD5 0de289c10cb7446dcf15d0f685150756
SHA1 e60cf90b17b91f56f802f69902d42bd509604e6f
SHA512 f75e26d012eb0031d815e52d058257b8208f83b32dfae7853b0a48739e3dfbd6f02215e3f583e1aaa49931627e7ad229fb7db270013b7779f15e46e9b47408c6
SSDEEP 6144:c8Xq4SO5Zj+P1joXqlo+XAw3JJigTqen7GJ5w+yXCd7sC1B:c8XVSp9jSqlx7iM97G03XCd4C1
TLSH
T14BF4BECEB2846C2DFB5D41717E10895A472A6CF12960D47A311BBBCC2BF24D25FB0E99
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/3404-10-0x0000000000400000-0x000000000041A000-memory.dmp

Download

memory/3404-13-0x0000000000400000-0x000000000041A000-memory.dmp

Download

memory/3404-14-0x0000000000400000-0x000000000041A000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

Replay Monitor

Loading Replay Monitor...

Downloads