Malware Analysis Report

2024-12-07 03:21

Sample ID 241113-cp3lgsvemm
Target 34956fb0874a7093f7e246b475a97acc90e312c3c762a09f69d9933b0837f59f.exe
SHA256 34956fb0874a7093f7e246b475a97acc90e312c3c762a09f69d9933b0837f59f
Tags
remcos host discovery rat
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

34956fb0874a7093f7e246b475a97acc90e312c3c762a09f69d9933b0837f59f

Threat Level: Known bad

The file 34956fb0874a7093f7e246b475a97acc90e312c3c762a09f69d9933b0837f59f.exe was found to be: Known bad.

Malicious Activity Summary

remcos host discovery rat

Remcos

Remcos family

Suspicious use of SetThreadContext

Unsigned PE

System Location Discovery: System Language Discovery

Suspicious behavior: EnumeratesProcesses

Suspicious use of SetWindowsHookEx

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-13 02:15

Signatures

Unsigned PE

Description Indicator Process Target
N/A N/A N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-11-13 02:15

Reported

2024-11-13 02:18

Platform

win7-20240708-en

Max time kernel

148s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\34956fb0874a7093f7e246b475a97acc90e312c3c762a09f69d9933b0837f59f.exe"

Signatures

Remcos

rat remcos

Remcos family

remcos

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\34956fb0874a7093f7e246b475a97acc90e312c3c762a09f69d9933b0837f59f.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\34956fb0874a7093f7e246b475a97acc90e312c3c762a09f69d9933b0837f59f.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\34956fb0874a7093f7e246b475a97acc90e312c3c762a09f69d9933b0837f59f.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\34956fb0874a7093f7e246b475a97acc90e312c3c762a09f69d9933b0837f59f.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2644 wrote to memory of 2756 N/A C:\Users\Admin\AppData\Local\Temp\34956fb0874a7093f7e246b475a97acc90e312c3c762a09f69d9933b0837f59f.exe C:\Users\Admin\AppData\Local\Temp\34956fb0874a7093f7e246b475a97acc90e312c3c762a09f69d9933b0837f59f.exe
PID 2644 wrote to memory of 2756 N/A C:\Users\Admin\AppData\Local\Temp\34956fb0874a7093f7e246b475a97acc90e312c3c762a09f69d9933b0837f59f.exe C:\Users\Admin\AppData\Local\Temp\34956fb0874a7093f7e246b475a97acc90e312c3c762a09f69d9933b0837f59f.exe
PID 2644 wrote to memory of 2756 N/A C:\Users\Admin\AppData\Local\Temp\34956fb0874a7093f7e246b475a97acc90e312c3c762a09f69d9933b0837f59f.exe C:\Users\Admin\AppData\Local\Temp\34956fb0874a7093f7e246b475a97acc90e312c3c762a09f69d9933b0837f59f.exe
PID 2644 wrote to memory of 2756 N/A C:\Users\Admin\AppData\Local\Temp\34956fb0874a7093f7e246b475a97acc90e312c3c762a09f69d9933b0837f59f.exe C:\Users\Admin\AppData\Local\Temp\34956fb0874a7093f7e246b475a97acc90e312c3c762a09f69d9933b0837f59f.exe
PID 2644 wrote to memory of 2772 N/A C:\Users\Admin\AppData\Local\Temp\34956fb0874a7093f7e246b475a97acc90e312c3c762a09f69d9933b0837f59f.exe C:\Users\Admin\AppData\Local\Temp\34956fb0874a7093f7e246b475a97acc90e312c3c762a09f69d9933b0837f59f.exe
PID 2644 wrote to memory of 2772 N/A C:\Users\Admin\AppData\Local\Temp\34956fb0874a7093f7e246b475a97acc90e312c3c762a09f69d9933b0837f59f.exe C:\Users\Admin\AppData\Local\Temp\34956fb0874a7093f7e246b475a97acc90e312c3c762a09f69d9933b0837f59f.exe
PID 2644 wrote to memory of 2772 N/A C:\Users\Admin\AppData\Local\Temp\34956fb0874a7093f7e246b475a97acc90e312c3c762a09f69d9933b0837f59f.exe C:\Users\Admin\AppData\Local\Temp\34956fb0874a7093f7e246b475a97acc90e312c3c762a09f69d9933b0837f59f.exe
PID 2644 wrote to memory of 2772 N/A C:\Users\Admin\AppData\Local\Temp\34956fb0874a7093f7e246b475a97acc90e312c3c762a09f69d9933b0837f59f.exe C:\Users\Admin\AppData\Local\Temp\34956fb0874a7093f7e246b475a97acc90e312c3c762a09f69d9933b0837f59f.exe
PID 2644 wrote to memory of 2772 N/A C:\Users\Admin\AppData\Local\Temp\34956fb0874a7093f7e246b475a97acc90e312c3c762a09f69d9933b0837f59f.exe C:\Users\Admin\AppData\Local\Temp\34956fb0874a7093f7e246b475a97acc90e312c3c762a09f69d9933b0837f59f.exe
PID 2644 wrote to memory of 2772 N/A C:\Users\Admin\AppData\Local\Temp\34956fb0874a7093f7e246b475a97acc90e312c3c762a09f69d9933b0837f59f.exe C:\Users\Admin\AppData\Local\Temp\34956fb0874a7093f7e246b475a97acc90e312c3c762a09f69d9933b0837f59f.exe
PID 2644 wrote to memory of 2772 N/A C:\Users\Admin\AppData\Local\Temp\34956fb0874a7093f7e246b475a97acc90e312c3c762a09f69d9933b0837f59f.exe C:\Users\Admin\AppData\Local\Temp\34956fb0874a7093f7e246b475a97acc90e312c3c762a09f69d9933b0837f59f.exe
PID 2644 wrote to memory of 2772 N/A C:\Users\Admin\AppData\Local\Temp\34956fb0874a7093f7e246b475a97acc90e312c3c762a09f69d9933b0837f59f.exe C:\Users\Admin\AppData\Local\Temp\34956fb0874a7093f7e246b475a97acc90e312c3c762a09f69d9933b0837f59f.exe
PID 2644 wrote to memory of 2772 N/A C:\Users\Admin\AppData\Local\Temp\34956fb0874a7093f7e246b475a97acc90e312c3c762a09f69d9933b0837f59f.exe C:\Users\Admin\AppData\Local\Temp\34956fb0874a7093f7e246b475a97acc90e312c3c762a09f69d9933b0837f59f.exe
PID 2644 wrote to memory of 2772 N/A C:\Users\Admin\AppData\Local\Temp\34956fb0874a7093f7e246b475a97acc90e312c3c762a09f69d9933b0837f59f.exe C:\Users\Admin\AppData\Local\Temp\34956fb0874a7093f7e246b475a97acc90e312c3c762a09f69d9933b0837f59f.exe
PID 2644 wrote to memory of 2772 N/A C:\Users\Admin\AppData\Local\Temp\34956fb0874a7093f7e246b475a97acc90e312c3c762a09f69d9933b0837f59f.exe C:\Users\Admin\AppData\Local\Temp\34956fb0874a7093f7e246b475a97acc90e312c3c762a09f69d9933b0837f59f.exe
PID 2644 wrote to memory of 2772 N/A C:\Users\Admin\AppData\Local\Temp\34956fb0874a7093f7e246b475a97acc90e312c3c762a09f69d9933b0837f59f.exe C:\Users\Admin\AppData\Local\Temp\34956fb0874a7093f7e246b475a97acc90e312c3c762a09f69d9933b0837f59f.exe
PID 2644 wrote to memory of 2772 N/A C:\Users\Admin\AppData\Local\Temp\34956fb0874a7093f7e246b475a97acc90e312c3c762a09f69d9933b0837f59f.exe C:\Users\Admin\AppData\Local\Temp\34956fb0874a7093f7e246b475a97acc90e312c3c762a09f69d9933b0837f59f.exe

Processes

C:\Users\Admin\AppData\Local\Temp\34956fb0874a7093f7e246b475a97acc90e312c3c762a09f69d9933b0837f59f.exe

"C:\Users\Admin\AppData\Local\Temp\34956fb0874a7093f7e246b475a97acc90e312c3c762a09f69d9933b0837f59f.exe"

C:\Users\Admin\AppData\Local\Temp\34956fb0874a7093f7e246b475a97acc90e312c3c762a09f69d9933b0837f59f.exe

"C:\Users\Admin\AppData\Local\Temp\34956fb0874a7093f7e246b475a97acc90e312c3c762a09f69d9933b0837f59f.exe"

C:\Users\Admin\AppData\Local\Temp\34956fb0874a7093f7e246b475a97acc90e312c3c762a09f69d9933b0837f59f.exe

"C:\Users\Admin\AppData\Local\Temp\34956fb0874a7093f7e246b475a97acc90e312c3c762a09f69d9933b0837f59f.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 oyo.work.gd udp
US 154.216.20.185:3142 oyo.work.gd tcp
US 8.8.8.8:53 geoplugin.net udp
NL 178.237.33.50:80 geoplugin.net tcp

Files

memory/2644-0-0x0000000074C5E000-0x0000000074C5F000-memory.dmp

memory/2644-1-0x0000000000160000-0x000000000029C000-memory.dmp

memory/2644-3-0x0000000074C50000-0x000000007533E000-memory.dmp

memory/2644-2-0x0000000000680000-0x0000000000692000-memory.dmp

memory/2644-4-0x0000000074C5E000-0x0000000074C5F000-memory.dmp

memory/2644-5-0x0000000074C50000-0x000000007533E000-memory.dmp

memory/2644-6-0x0000000005290000-0x0000000005350000-memory.dmp

memory/2772-7-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2772-13-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2772-11-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2772-9-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2772-28-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2772-32-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2772-31-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2772-25-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2772-23-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

memory/2772-21-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2772-19-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2772-17-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2772-15-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2772-27-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2644-33-0x0000000074C50000-0x000000007533E000-memory.dmp

memory/2772-34-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2772-35-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2772-36-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2772-37-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2772-39-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2772-42-0x0000000000400000-0x000000000047F000-memory.dmp

C:\ProgramData\pdf\logs.dat

MD5 cd4747572e840d1d2aca74fb39147408
SHA1 a03d4871f5bd738634685f0cb8b08b092531c581
SHA256 af1783bf28cdb989393181e4b5ae30f47d02f1799eb40fc082be52ead1a9ec65
SHA512 bb97578e7655dd6a5321be7a2de4714559caa2801b9d9787336f6057ad52d2cc5f979e427b928497fe0b560a0633dcdb1243526d7a09d06c536f4482e19466fd

memory/2772-47-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2772-48-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2772-55-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2772-56-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2772-63-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2772-64-0x0000000000400000-0x000000000047F000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-13 02:15

Reported

2024-11-13 02:18

Platform

win10v2004-20241007-en

Max time kernel

150s

Max time network

149s

Command Line

"C:\Users\Admin\AppData\Local\Temp\34956fb0874a7093f7e246b475a97acc90e312c3c762a09f69d9933b0837f59f.exe"

Signatures

Remcos

rat remcos

Remcos family

remcos

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\34956fb0874a7093f7e246b475a97acc90e312c3c762a09f69d9933b0837f59f.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\34956fb0874a7093f7e246b475a97acc90e312c3c762a09f69d9933b0837f59f.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\34956fb0874a7093f7e246b475a97acc90e312c3c762a09f69d9933b0837f59f.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2164 wrote to memory of 1580 N/A C:\Users\Admin\AppData\Local\Temp\34956fb0874a7093f7e246b475a97acc90e312c3c762a09f69d9933b0837f59f.exe C:\Users\Admin\AppData\Local\Temp\34956fb0874a7093f7e246b475a97acc90e312c3c762a09f69d9933b0837f59f.exe
PID 2164 wrote to memory of 1580 N/A C:\Users\Admin\AppData\Local\Temp\34956fb0874a7093f7e246b475a97acc90e312c3c762a09f69d9933b0837f59f.exe C:\Users\Admin\AppData\Local\Temp\34956fb0874a7093f7e246b475a97acc90e312c3c762a09f69d9933b0837f59f.exe
PID 2164 wrote to memory of 1580 N/A C:\Users\Admin\AppData\Local\Temp\34956fb0874a7093f7e246b475a97acc90e312c3c762a09f69d9933b0837f59f.exe C:\Users\Admin\AppData\Local\Temp\34956fb0874a7093f7e246b475a97acc90e312c3c762a09f69d9933b0837f59f.exe
PID 2164 wrote to memory of 1580 N/A C:\Users\Admin\AppData\Local\Temp\34956fb0874a7093f7e246b475a97acc90e312c3c762a09f69d9933b0837f59f.exe C:\Users\Admin\AppData\Local\Temp\34956fb0874a7093f7e246b475a97acc90e312c3c762a09f69d9933b0837f59f.exe
PID 2164 wrote to memory of 1580 N/A C:\Users\Admin\AppData\Local\Temp\34956fb0874a7093f7e246b475a97acc90e312c3c762a09f69d9933b0837f59f.exe C:\Users\Admin\AppData\Local\Temp\34956fb0874a7093f7e246b475a97acc90e312c3c762a09f69d9933b0837f59f.exe
PID 2164 wrote to memory of 1580 N/A C:\Users\Admin\AppData\Local\Temp\34956fb0874a7093f7e246b475a97acc90e312c3c762a09f69d9933b0837f59f.exe C:\Users\Admin\AppData\Local\Temp\34956fb0874a7093f7e246b475a97acc90e312c3c762a09f69d9933b0837f59f.exe
PID 2164 wrote to memory of 1580 N/A C:\Users\Admin\AppData\Local\Temp\34956fb0874a7093f7e246b475a97acc90e312c3c762a09f69d9933b0837f59f.exe C:\Users\Admin\AppData\Local\Temp\34956fb0874a7093f7e246b475a97acc90e312c3c762a09f69d9933b0837f59f.exe
PID 2164 wrote to memory of 1580 N/A C:\Users\Admin\AppData\Local\Temp\34956fb0874a7093f7e246b475a97acc90e312c3c762a09f69d9933b0837f59f.exe C:\Users\Admin\AppData\Local\Temp\34956fb0874a7093f7e246b475a97acc90e312c3c762a09f69d9933b0837f59f.exe
PID 2164 wrote to memory of 1580 N/A C:\Users\Admin\AppData\Local\Temp\34956fb0874a7093f7e246b475a97acc90e312c3c762a09f69d9933b0837f59f.exe C:\Users\Admin\AppData\Local\Temp\34956fb0874a7093f7e246b475a97acc90e312c3c762a09f69d9933b0837f59f.exe
PID 2164 wrote to memory of 1580 N/A C:\Users\Admin\AppData\Local\Temp\34956fb0874a7093f7e246b475a97acc90e312c3c762a09f69d9933b0837f59f.exe C:\Users\Admin\AppData\Local\Temp\34956fb0874a7093f7e246b475a97acc90e312c3c762a09f69d9933b0837f59f.exe
PID 2164 wrote to memory of 1580 N/A C:\Users\Admin\AppData\Local\Temp\34956fb0874a7093f7e246b475a97acc90e312c3c762a09f69d9933b0837f59f.exe C:\Users\Admin\AppData\Local\Temp\34956fb0874a7093f7e246b475a97acc90e312c3c762a09f69d9933b0837f59f.exe
PID 2164 wrote to memory of 1580 N/A C:\Users\Admin\AppData\Local\Temp\34956fb0874a7093f7e246b475a97acc90e312c3c762a09f69d9933b0837f59f.exe C:\Users\Admin\AppData\Local\Temp\34956fb0874a7093f7e246b475a97acc90e312c3c762a09f69d9933b0837f59f.exe

Processes

C:\Users\Admin\AppData\Local\Temp\34956fb0874a7093f7e246b475a97acc90e312c3c762a09f69d9933b0837f59f.exe

"C:\Users\Admin\AppData\Local\Temp\34956fb0874a7093f7e246b475a97acc90e312c3c762a09f69d9933b0837f59f.exe"

C:\Users\Admin\AppData\Local\Temp\34956fb0874a7093f7e246b475a97acc90e312c3c762a09f69d9933b0837f59f.exe

"C:\Users\Admin\AppData\Local\Temp\34956fb0874a7093f7e246b475a97acc90e312c3c762a09f69d9933b0837f59f.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 67.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 oyo.work.gd udp
US 154.216.20.185:3142 oyo.work.gd tcp
US 8.8.8.8:53 185.20.216.154.in-addr.arpa udp
US 8.8.8.8:53 geoplugin.net udp
NL 178.237.33.50:80 geoplugin.net tcp
US 8.8.8.8:53 50.33.237.178.in-addr.arpa udp
US 8.8.8.8:53 200.163.202.172.in-addr.arpa udp
US 8.8.8.8:53 241.42.69.40.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 88.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 0.205.248.87.in-addr.arpa udp
US 8.8.8.8:53 43.229.111.52.in-addr.arpa udp
US 8.8.8.8:53 udp

Files

memory/2164-0-0x0000000074CAE000-0x0000000074CAF000-memory.dmp

memory/2164-1-0x0000000000A30000-0x0000000000B6C000-memory.dmp

memory/2164-2-0x0000000005AF0000-0x0000000006094000-memory.dmp

memory/2164-3-0x0000000005540000-0x00000000055D2000-memory.dmp

memory/2164-4-0x0000000005660000-0x00000000059B4000-memory.dmp

memory/2164-6-0x00000000060E0000-0x00000000060EA000-memory.dmp

memory/2164-5-0x0000000074CA0000-0x0000000075450000-memory.dmp

memory/2164-7-0x00000000061B0000-0x000000000624C000-memory.dmp

memory/2164-8-0x00000000060D0000-0x00000000060E2000-memory.dmp

memory/2164-9-0x0000000074CAE000-0x0000000074CAF000-memory.dmp

memory/2164-10-0x0000000074CA0000-0x0000000075450000-memory.dmp

memory/2164-11-0x00000000064C0000-0x0000000006580000-memory.dmp

memory/1580-12-0x0000000000400000-0x000000000047F000-memory.dmp

memory/1580-15-0x0000000000400000-0x000000000047F000-memory.dmp

memory/1580-16-0x0000000000400000-0x000000000047F000-memory.dmp

memory/1580-20-0x0000000000400000-0x000000000047F000-memory.dmp

memory/1580-13-0x0000000000400000-0x000000000047F000-memory.dmp

memory/1580-19-0x0000000000400000-0x000000000047F000-memory.dmp

memory/1580-21-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2164-22-0x0000000074CA0000-0x0000000075450000-memory.dmp

memory/1580-23-0x0000000000400000-0x000000000047F000-memory.dmp

memory/1580-24-0x0000000000400000-0x000000000047F000-memory.dmp

memory/1580-25-0x0000000000400000-0x000000000047F000-memory.dmp

memory/1580-30-0x0000000000400000-0x000000000047F000-memory.dmp

C:\ProgramData\pdf\logs.dat

MD5 cd4747572e840d1d2aca74fb39147408
SHA1 a03d4871f5bd738634685f0cb8b08b092531c581
SHA256 af1783bf28cdb989393181e4b5ae30f47d02f1799eb40fc082be52ead1a9ec65
SHA512 bb97578e7655dd6a5321be7a2de4714559caa2801b9d9787336f6057ad52d2cc5f979e427b928497fe0b560a0633dcdb1243526d7a09d06c536f4482e19466fd

memory/1580-35-0x0000000000400000-0x000000000047F000-memory.dmp

memory/1580-36-0x0000000000400000-0x000000000047F000-memory.dmp

memory/1580-43-0x0000000000400000-0x000000000047F000-memory.dmp

memory/1580-44-0x0000000000400000-0x000000000047F000-memory.dmp

memory/1580-51-0x0000000000400000-0x000000000047F000-memory.dmp

memory/1580-52-0x0000000000400000-0x000000000047F000-memory.dmp

memory/1580-59-0x0000000000400000-0x000000000047F000-memory.dmp

memory/1580-60-0x0000000000400000-0x000000000047F000-memory.dmp