remcos | 4e4855563c47f7a6c230b54ef27c2e1d46f6d895220588d5ba50652414de98e2

General

Target

4e4855563c47f7a6c230b54ef27c2e1d46f6d895220588d5ba50652414de98e2.exe
Size

927KB
MD5

18416919737cea3ac328aa30560e3be4
SHA1

c446f65f62326e534c1627af9d836e58d28d88d5
SHA256

4e4855563c47f7a6c230b54ef27c2e1d46f6d895220588d5ba50652414de98e2
SHA512

f53d846d4507541113feb3244acd9c66e1649d29f3c1331c30d8bd7cd5f478482a7313882b5d191e037d1592d695c3d85522272a6d0f816ca8f63e177ce870a8
SSDEEP

24576:W0HPaXjcpYXYrq05AuW7FzuT8udqrPvVmiN0nL:BaTi/xksbdq3Ei0n

Score

10^/10

remcos remotehost execution rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

185.29.9.102:7711

Attributes

audio_folder
MicRecords
audio_record_time
5
connect_delay
0
connect_interval
1
copy_file
remcos.exe
copy_folder
Remcos
delete_file
false
hide_file
false
hide_keylog_file
false
install_flag
false
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
mouse_option
false
mutex
Rmc-4EOZOA
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
take_screenshot_option
false
take_screenshot_time
5

Signatures

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

Detects Windows exceutables bypassing UAC using CMSTP COM interfaces. MITRE (T1218.003) 19 IoCs

resource	yara_rule
behavioral1/memory/2788-22-0x0000000000400000-0x0000000000482000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral1/memory/2788-19-0x0000000000400000-0x0000000000482000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral1/memory/2788-17-0x0000000000400000-0x0000000000482000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral1/memory/2788-24-0x0000000000400000-0x0000000000482000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral1/memory/2788-18-0x0000000000400000-0x0000000000482000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral1/memory/2788-16-0x0000000000400000-0x0000000000482000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral1/memory/2788-14-0x0000000000400000-0x0000000000482000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral1/memory/2788-29-0x0000000000400000-0x0000000000482000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral1/memory/2788-28-0x0000000000400000-0x0000000000482000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral1/memory/2788-31-0x0000000000400000-0x0000000000482000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral1/memory/2788-32-0x0000000000400000-0x0000000000482000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral1/memory/2788-33-0x0000000000400000-0x0000000000482000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral1/memory/2788-34-0x0000000000400000-0x0000000000482000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral1/memory/2788-35-0x0000000000400000-0x0000000000482000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral1/memory/2788-36-0x0000000000400000-0x0000000000482000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral1/memory/2788-37-0x0000000000400000-0x0000000000482000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral1/memory/2788-38-0x0000000000400000-0x0000000000482000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral1/memory/2788-39-0x0000000000400000-0x0000000000482000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral1/memory/2788-40-0x0000000000400000-0x0000000000482000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM

Detects executables packed with SmartAssembly 1 IoCs

resource	yara_rule
behavioral1/memory/2156-6-0x0000000000920000-0x000000000092C000-memory.dmp	INDICATOR_EXE_Packed_SmartAssembly

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
2644	powershell.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2156 set thread context of 2788	2156	4e4855563c47f7a6c230b54ef27c2e1d46f6d895220588d5ba50652414de98e2.exe	30

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2644	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2644	powershell.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 2156 wrote to memory of 2644	2156	4e4855563c47f7a6c230b54ef27c2e1d46f6d895220588d5ba50652414de98e2.exe	28
PID 2156 wrote to memory of 2644	2156	4e4855563c47f7a6c230b54ef27c2e1d46f6d895220588d5ba50652414de98e2.exe	28
PID 2156 wrote to memory of 2644	2156	4e4855563c47f7a6c230b54ef27c2e1d46f6d895220588d5ba50652414de98e2.exe	28
PID 2156 wrote to memory of 2644	2156	4e4855563c47f7a6c230b54ef27c2e1d46f6d895220588d5ba50652414de98e2.exe	28
PID 2156 wrote to memory of 2788	2156	4e4855563c47f7a6c230b54ef27c2e1d46f6d895220588d5ba50652414de98e2.exe	30
PID 2156 wrote to memory of 2788	2156	4e4855563c47f7a6c230b54ef27c2e1d46f6d895220588d5ba50652414de98e2.exe	30
PID 2156 wrote to memory of 2788	2156	4e4855563c47f7a6c230b54ef27c2e1d46f6d895220588d5ba50652414de98e2.exe	30
PID 2156 wrote to memory of 2788	2156	4e4855563c47f7a6c230b54ef27c2e1d46f6d895220588d5ba50652414de98e2.exe	30
PID 2156 wrote to memory of 2788	2156	4e4855563c47f7a6c230b54ef27c2e1d46f6d895220588d5ba50652414de98e2.exe	30
PID 2156 wrote to memory of 2788	2156	4e4855563c47f7a6c230b54ef27c2e1d46f6d895220588d5ba50652414de98e2.exe	30
PID 2156 wrote to memory of 2788	2156	4e4855563c47f7a6c230b54ef27c2e1d46f6d895220588d5ba50652414de98e2.exe	30
PID 2156 wrote to memory of 2788	2156	4e4855563c47f7a6c230b54ef27c2e1d46f6d895220588d5ba50652414de98e2.exe	30
PID 2156 wrote to memory of 2788	2156	4e4855563c47f7a6c230b54ef27c2e1d46f6d895220588d5ba50652414de98e2.exe	30
PID 2156 wrote to memory of 2788	2156	4e4855563c47f7a6c230b54ef27c2e1d46f6d895220588d5ba50652414de98e2.exe	30
PID 2156 wrote to memory of 2788	2156	4e4855563c47f7a6c230b54ef27c2e1d46f6d895220588d5ba50652414de98e2.exe	30
PID 2156 wrote to memory of 2788	2156	4e4855563c47f7a6c230b54ef27c2e1d46f6d895220588d5ba50652414de98e2.exe	30
PID 2156 wrote to memory of 2788	2156	4e4855563c47f7a6c230b54ef27c2e1d46f6d895220588d5ba50652414de98e2.exe	30

C:\Users\Admin\AppData\Local\Temp\4e4855563c47f7a6c230b54ef27c2e1d46f6d895220588d5ba50652414de98e2.exe
"C:\Users\Admin\AppData\Local\Temp\4e4855563c47f7a6c230b54ef27c2e1d46f6d895220588d5ba50652414de98e2.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2156
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\4e4855563c47f7a6c230b54ef27c2e1d46f6d895220588d5ba50652414de98e2.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2644
- C:\Users\Admin\AppData\Local\Temp\4e4855563c47f7a6c230b54ef27c2e1d46f6d895220588d5ba50652414de98e2.exe
  "C:\Users\Admin\AppData\Local\Temp\4e4855563c47f7a6c230b54ef27c2e1d46f6d895220588d5ba50652414de98e2.exe"
  2⤵
  PID:2788

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

memory/2156-25-0x0000000074480000-0x0000000074B6E000-memory.dmp

Filesize
6.9MB

Download
memory/2156-1-0x0000000000F00000-0x0000000000FEE000-memory.dmp

Filesize
952KB

Download
memory/2156-2-0x0000000074480000-0x0000000074B6E000-memory.dmp

Filesize
6.9MB

Download
memory/2156-3-0x0000000005CE0000-0x0000000005DBA000-memory.dmp

Filesize
872KB

Download
memory/2156-4-0x00000000004D0000-0x00000000004E2000-memory.dmp

Filesize
72KB

Download
memory/2156-5-0x0000000000770000-0x0000000000778000-memory.dmp

Filesize
32KB

Download
memory/2156-6-0x0000000000920000-0x000000000092C000-memory.dmp

Filesize
48KB

Download
memory/2156-7-0x0000000005E40000-0x0000000005F00000-memory.dmp

Filesize
768KB

Download
memory/2156-0-0x000000007448E000-0x000000007448F000-memory.dmp

Filesize
4KB

Download
memory/2788-14-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2788-30-0x0000000074480000-0x0000000074485000-memory.dmp

Filesize
20KB

Download
memory/2788-17-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2788-20-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2788-24-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2788-18-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2788-16-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2788-22-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2788-12-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2788-10-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2788-8-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2788-19-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2788-29-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2788-28-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2788-31-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2788-32-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2788-33-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2788-34-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2788-35-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2788-36-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2788-37-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2788-38-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2788-39-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2788-40-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download

Analysis

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