remcos | f4da65fff4d9b2420e2375ce736d02b0dab3e4776115346c5219891ea8fc3c97

General

Target

f4da65fff4d9b2420e2375ce736d02b0dab3e4776115346c5219891ea8fc3c97.exe
Size

973KB
MD5

ecad35aa0a2834edde088dba8063486d
SHA1

f09ff2154b1542326d63c1eae67a1db0d5dd3571
SHA256

f4da65fff4d9b2420e2375ce736d02b0dab3e4776115346c5219891ea8fc3c97
SHA512

0aea41973d5ec10e93d423985ef5a4376c43efe8eaf3b9bc353decddb62339b1f1d9e962eafa53809a75a5e2be43fdfb432f81a5a9556cdb826a440e7f33174e
SSDEEP

24576:EReyAYaI69Kl3u2FRFhlF4guHGTpSD4wHCKywRmOD:EReyAk3uGTvluupQ4wHChnc

Score

10^/10

remcos rem discovery execution rat

Malware Config

Extracted

Family

remcos

Botnet

Rem

C2

87.120.127.120:2404

Attributes

audio_folder
MicRecords
audio_path
ApplicationPath
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-NWAKMX
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
Remcos family
remcos

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
2368	powershell.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2984 set thread context of 2748	2984	f4da65fff4d9b2420e2375ce736d02b0dab3e4776115346c5219891ea8fc3c97.exe	33

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 3 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	f4da65fff4d9b2420e2375ce736d02b0dab3e4776115346c5219891ea8fc3c97.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	f4da65fff4d9b2420e2375ce736d02b0dab3e4776115346c5219891ea8fc3c97.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2368	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2368	powershell.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2984 wrote to memory of 2368	2984	f4da65fff4d9b2420e2375ce736d02b0dab3e4776115346c5219891ea8fc3c97.exe	31
PID 2984 wrote to memory of 2368	2984	f4da65fff4d9b2420e2375ce736d02b0dab3e4776115346c5219891ea8fc3c97.exe	31
PID 2984 wrote to memory of 2368	2984	f4da65fff4d9b2420e2375ce736d02b0dab3e4776115346c5219891ea8fc3c97.exe	31
PID 2984 wrote to memory of 2368	2984	f4da65fff4d9b2420e2375ce736d02b0dab3e4776115346c5219891ea8fc3c97.exe	31
PID 2984 wrote to memory of 2748	2984	f4da65fff4d9b2420e2375ce736d02b0dab3e4776115346c5219891ea8fc3c97.exe	33
PID 2984 wrote to memory of 2748	2984	f4da65fff4d9b2420e2375ce736d02b0dab3e4776115346c5219891ea8fc3c97.exe	33
PID 2984 wrote to memory of 2748	2984	f4da65fff4d9b2420e2375ce736d02b0dab3e4776115346c5219891ea8fc3c97.exe	33
PID 2984 wrote to memory of 2748	2984	f4da65fff4d9b2420e2375ce736d02b0dab3e4776115346c5219891ea8fc3c97.exe	33
PID 2984 wrote to memory of 2748	2984	f4da65fff4d9b2420e2375ce736d02b0dab3e4776115346c5219891ea8fc3c97.exe	33
PID 2984 wrote to memory of 2748	2984	f4da65fff4d9b2420e2375ce736d02b0dab3e4776115346c5219891ea8fc3c97.exe	33
PID 2984 wrote to memory of 2748	2984	f4da65fff4d9b2420e2375ce736d02b0dab3e4776115346c5219891ea8fc3c97.exe	33
PID 2984 wrote to memory of 2748	2984	f4da65fff4d9b2420e2375ce736d02b0dab3e4776115346c5219891ea8fc3c97.exe	33
PID 2984 wrote to memory of 2748	2984	f4da65fff4d9b2420e2375ce736d02b0dab3e4776115346c5219891ea8fc3c97.exe	33
PID 2984 wrote to memory of 2748	2984	f4da65fff4d9b2420e2375ce736d02b0dab3e4776115346c5219891ea8fc3c97.exe	33
PID 2984 wrote to memory of 2748	2984	f4da65fff4d9b2420e2375ce736d02b0dab3e4776115346c5219891ea8fc3c97.exe	33

C:\Users\Admin\AppData\Local\Temp\f4da65fff4d9b2420e2375ce736d02b0dab3e4776115346c5219891ea8fc3c97.exe
"C:\Users\Admin\AppData\Local\Temp\f4da65fff4d9b2420e2375ce736d02b0dab3e4776115346c5219891ea8fc3c97.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2984
- 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\f4da65fff4d9b2420e2375ce736d02b0dab3e4776115346c5219891ea8fc3c97.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2368
- C:\Users\Admin\AppData\Local\Temp\f4da65fff4d9b2420e2375ce736d02b0dab3e4776115346c5219891ea8fc3c97.exe
  "C:\Users\Admin\AppData\Local\Temp\f4da65fff4d9b2420e2375ce736d02b0dab3e4776115346c5219891ea8fc3c97.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2748

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

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/2748-22-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2748-32-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2748-41-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2748-39-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2748-38-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2748-13-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2748-37-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2748-9-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2748-7-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2748-11-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2748-14-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2748-20-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2748-19-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2748-21-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2748-17-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2748-15-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2748-40-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2748-36-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2748-35-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2748-12-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2748-26-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2748-27-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2748-28-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2748-30-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2748-31-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2748-34-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2748-33-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2984-1-0x0000000000A90000-0x0000000000B8A000-memory.dmp

Filesize
1000KB

Download
memory/2984-5-0x00000000740B0000-0x000000007479E000-memory.dmp

Filesize
6.9MB

Download
memory/2984-3-0x00000000004A0000-0x00000000004BA000-memory.dmp

Filesize
104KB

Download
memory/2984-6-0x0000000005160000-0x0000000005224000-memory.dmp

Filesize
784KB

Download
memory/2984-4-0x00000000740BE000-0x00000000740BF000-memory.dmp

Filesize
4KB

Download
memory/2984-23-0x00000000740B0000-0x000000007479E000-memory.dmp

Filesize
6.9MB

Download
memory/2984-0-0x00000000740BE000-0x00000000740BF000-memory.dmp

Filesize
4KB

Download
memory/2984-2-0x00000000740B0000-0x000000007479E000-memory.dmp

Filesize
6.9MB

Download

Analysis

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