remcos | b43ca133d57448c7afb42bffcb1ce756cdad70308d3f49c9c981fac24c55e76f

General

Target

RFQ-20241230.pif.exe
Size

964KB
MD5

a2800b58845d5f108333e9f7f9c388dd
SHA1

1a1ce9b83de9d2e967a539aabeafdab36dbb626a
SHA256

b43ca133d57448c7afb42bffcb1ce756cdad70308d3f49c9c981fac24c55e76f
SHA512

150a651055ac9c697a2132eda8a24f8f1af58d37d8a140356afd24bff629307404691213d04db92ed5948f9f47d9ac0e3e7cea72903984d1ca4b336ccbf2c23f
SSDEEP

24576:FzrqD+VnGOgUL+oMIk2W/PpOlL46TFJtV:BqyVnCUaLnZONbTFJX

Score

10^/10

remcos remcohost discovery execution rat

Malware Config

Extracted

Family

remcos

Botnet

RemcoHost

C2

173.211.106.233:2404

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-4WOIVV
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
2528	powershell.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2380 set thread context of 2980	2380	RFQ-20241230.pif.exe	32

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	RFQ-20241230.pif.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RFQ-20241230.pif.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2528	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2528	powershell.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2380 wrote to memory of 2528	2380	RFQ-20241230.pif.exe	31
PID 2380 wrote to memory of 2528	2380	RFQ-20241230.pif.exe	31
PID 2380 wrote to memory of 2528	2380	RFQ-20241230.pif.exe	31
PID 2380 wrote to memory of 2528	2380	RFQ-20241230.pif.exe	31
PID 2380 wrote to memory of 2980	2380	RFQ-20241230.pif.exe	32
PID 2380 wrote to memory of 2980	2380	RFQ-20241230.pif.exe	32
PID 2380 wrote to memory of 2980	2380	RFQ-20241230.pif.exe	32
PID 2380 wrote to memory of 2980	2380	RFQ-20241230.pif.exe	32
PID 2380 wrote to memory of 2980	2380	RFQ-20241230.pif.exe	32
PID 2380 wrote to memory of 2980	2380	RFQ-20241230.pif.exe	32
PID 2380 wrote to memory of 2980	2380	RFQ-20241230.pif.exe	32
PID 2380 wrote to memory of 2980	2380	RFQ-20241230.pif.exe	32
PID 2380 wrote to memory of 2980	2380	RFQ-20241230.pif.exe	32
PID 2380 wrote to memory of 2980	2380	RFQ-20241230.pif.exe	32
PID 2380 wrote to memory of 2980	2380	RFQ-20241230.pif.exe	32

C:\Users\Admin\AppData\Local\Temp\RFQ-20241230.pif.exe
"C:\Users\Admin\AppData\Local\Temp\RFQ-20241230.pif.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2380
- 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\RFQ-20241230.pif.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2528
- C:\Users\Admin\AppData\Local\Temp\RFQ-20241230.pif.exe
  "C:\Users\Admin\AppData\Local\Temp\RFQ-20241230.pif.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2980

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/2380-0-0x00000000745FE000-0x00000000745FF000-memory.dmp

Filesize
4KB

Download
memory/2380-1-0x00000000010C0000-0x00000000011B6000-memory.dmp

Filesize
984KB

Download
memory/2380-2-0x00000000745F0000-0x0000000074CDE000-memory.dmp

Filesize
6.9MB

Download
memory/2380-3-0x0000000000430000-0x0000000000448000-memory.dmp

Filesize
96KB

Download
memory/2380-4-0x00000000745FE000-0x00000000745FF000-memory.dmp

Filesize
4KB

Download
memory/2380-5-0x00000000745F0000-0x0000000074CDE000-memory.dmp

Filesize
6.9MB

Download
memory/2380-6-0x0000000000C50000-0x0000000000D14000-memory.dmp

Filesize
784KB

Download
memory/2380-22-0x00000000745F0000-0x0000000074CDE000-memory.dmp

Filesize
6.9MB

Download
memory/2980-20-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2980-25-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2980-17-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2980-15-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2980-14-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2980-13-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2980-12-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2980-21-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2980-11-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2980-19-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2980-7-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2980-9-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2980-26-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2980-27-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2980-28-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2980-29-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2980-30-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2980-31-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2980-32-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2980-33-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2980-34-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2980-35-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2980-36-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2980-37-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download

Analysis

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