remcos | fb7b6f2bf9f7494994228787e1b75387f75d3e69bcc030435b2dba2f0a12751d

General

Target

fb7b6f2bf9f7494994228787e1b75387f75d3e69bcc030435b2dba2f0a12751d.exe
Size

1.1MB
MD5

08d4a690d8a5f57b996465457d0f4775
SHA1

8059aa4a63ee35a7505dd55f9a4d8f63f02bfa78
SHA256

fb7b6f2bf9f7494994228787e1b75387f75d3e69bcc030435b2dba2f0a12751d
SHA512

8c08c78371e4d645a58aa32ca1549eecdc9466300212cd0b06fcda4d3a4470f2c67003ac5ad93180f2c7e34479b2a00d127aac7507d05304ee81725d5bff2739
SSDEEP

24576:eaTgKwZ14X27uUL3VM0kd+rkhfMsjgkAj2JE06J5N0Fj:LTgdZOcuUL3xAx/8b2S7Z05

Score

10^/10

remcos chinemerem discovery rat

Malware Config

Extracted

Family

remcos

Version

2.2.2 Pro

Botnet

chinemerem

C2

remcoss.onmypc.org:3765

Attributes

audio_folder
audio
audio_path
%AppData%
audio_record_time
5
connect_delay
0
connect_interval
5
copy_file
remcos.exe
copy_folder
remcos
delete_file
false
hide_file
false
hide_keylog_file
true
install_flag
false
install_path
%AppData%
keylog_crypt
true
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
keylog_path
%AppData%
mouse_option
false
mutex
r-8ET8H0
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
startup_value
remcos
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

Executes dropped EXE 2 IoCs

pid	Process
2532	AboutSettingsHandlers.exe
2764	AboutSettingsHandlers.exe

AutoIT Executable 4 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral1/memory/1832-20-0x0000000000C30000-0x0000000000DB9000-memory.dmp	autoit_exe
behavioral1/memory/1832-25-0x0000000000C30000-0x0000000000DB9000-memory.dmp	autoit_exe
behavioral1/memory/2532-42-0x00000000002F0000-0x0000000000479000-memory.dmp	autoit_exe
behavioral1/memory/2532-45-0x00000000002F0000-0x0000000000479000-memory.dmp	autoit_exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1832 set thread context of 3048	1832	fb7b6f2bf9f7494994228787e1b75387f75d3e69bcc030435b2dba2f0a12751d.exe	30
PID 2532 set thread context of 2764	2532	AboutSettingsHandlers.exe	36

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	AboutSettingsHandlers.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	fb7b6f2bf9f7494994228787e1b75387f75d3e69bcc030435b2dba2f0a12751d.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	fb7b6f2bf9f7494994228787e1b75387f75d3e69bcc030435b2dba2f0a12751d.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs

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

persistence execution

Scheduled Task

T1053.005

pid	Process
2980	schtasks.exe
2340	schtasks.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3048	fb7b6f2bf9f7494994228787e1b75387f75d3e69bcc030435b2dba2f0a12751d.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 1832 wrote to memory of 3048	1832	fb7b6f2bf9f7494994228787e1b75387f75d3e69bcc030435b2dba2f0a12751d.exe	30
PID 1832 wrote to memory of 3048	1832	fb7b6f2bf9f7494994228787e1b75387f75d3e69bcc030435b2dba2f0a12751d.exe	30
PID 1832 wrote to memory of 3048	1832	fb7b6f2bf9f7494994228787e1b75387f75d3e69bcc030435b2dba2f0a12751d.exe	30
PID 1832 wrote to memory of 3048	1832	fb7b6f2bf9f7494994228787e1b75387f75d3e69bcc030435b2dba2f0a12751d.exe	30
PID 1832 wrote to memory of 3048	1832	fb7b6f2bf9f7494994228787e1b75387f75d3e69bcc030435b2dba2f0a12751d.exe	30
PID 1832 wrote to memory of 3048	1832	fb7b6f2bf9f7494994228787e1b75387f75d3e69bcc030435b2dba2f0a12751d.exe	30
PID 1832 wrote to memory of 2980	1832	fb7b6f2bf9f7494994228787e1b75387f75d3e69bcc030435b2dba2f0a12751d.exe	32
PID 1832 wrote to memory of 2980	1832	fb7b6f2bf9f7494994228787e1b75387f75d3e69bcc030435b2dba2f0a12751d.exe	32
PID 1832 wrote to memory of 2980	1832	fb7b6f2bf9f7494994228787e1b75387f75d3e69bcc030435b2dba2f0a12751d.exe	32
PID 1832 wrote to memory of 2980	1832	fb7b6f2bf9f7494994228787e1b75387f75d3e69bcc030435b2dba2f0a12751d.exe	32
PID 2912 wrote to memory of 2532	2912	taskeng.exe	35
PID 2912 wrote to memory of 2532	2912	taskeng.exe	35
PID 2912 wrote to memory of 2532	2912	taskeng.exe	35
PID 2912 wrote to memory of 2532	2912	taskeng.exe	35
PID 2532 wrote to memory of 2764	2532	AboutSettingsHandlers.exe	36
PID 2532 wrote to memory of 2764	2532	AboutSettingsHandlers.exe	36
PID 2532 wrote to memory of 2764	2532	AboutSettingsHandlers.exe	36
PID 2532 wrote to memory of 2764	2532	AboutSettingsHandlers.exe	36
PID 2532 wrote to memory of 2764	2532	AboutSettingsHandlers.exe	36
PID 2532 wrote to memory of 2764	2532	AboutSettingsHandlers.exe	36
PID 2532 wrote to memory of 2340	2532	AboutSettingsHandlers.exe	37
PID 2532 wrote to memory of 2340	2532	AboutSettingsHandlers.exe	37
PID 2532 wrote to memory of 2340	2532	AboutSettingsHandlers.exe	37
PID 2532 wrote to memory of 2340	2532	AboutSettingsHandlers.exe	37

C:\Users\Admin\AppData\Local\Temp\fb7b6f2bf9f7494994228787e1b75387f75d3e69bcc030435b2dba2f0a12751d.exe
"C:\Users\Admin\AppData\Local\Temp\fb7b6f2bf9f7494994228787e1b75387f75d3e69bcc030435b2dba2f0a12751d.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1832
- C:\Users\Admin\AppData\Local\Temp\fb7b6f2bf9f7494994228787e1b75387f75d3e69bcc030435b2dba2f0a12751d.exe
  "C:\Users\Admin\AppData\Local\Temp\fb7b6f2bf9f7494994228787e1b75387f75d3e69bcc030435b2dba2f0a12751d.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:3048
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\SysWOW64\schtasks.exe" /create /tn SystemSettingsAdminFlows /tr "C:\Users\Admin\AppData\Roaming\UIMgrBroker\AboutSettingsHandlers.exe" /sc minute /mo 1 /F
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2980

C:\Windows\system32\taskeng.exe
taskeng.exe {3B6317E5-A9CD-4901-939C-B46036C7E421} S-1-5-21-1163522206-1469769407-485553996-1000:PJCSDMRP\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:2912
- C:\Users\Admin\AppData\Roaming\UIMgrBroker\AboutSettingsHandlers.exe
  C:\Users\Admin\AppData\Roaming\UIMgrBroker\AboutSettingsHandlers.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2532
- - C:\Users\Admin\AppData\Roaming\UIMgrBroker\AboutSettingsHandlers.exe
    "C:\Users\Admin\AppData\Roaming\UIMgrBroker\AboutSettingsHandlers.exe"
    3⤵
    - Executes dropped EXE
    PID:2764
- - C:\Windows\SysWOW64\schtasks.exe
    "C:\Windows\SysWOW64\schtasks.exe" /create /tn SystemSettingsAdminFlows /tr "C:\Users\Admin\AppData\Roaming\UIMgrBroker\AboutSettingsHandlers.exe" /sc minute /mo 1 /F
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:2340

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

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

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Downloads

C:\Users\Admin\AppData\Roaming\UIMgrBroker\AboutSettingsHandlers.exe

Filesize
1.1MB

MD5
b3980c3258c7ebbf793533c02cd7b0ca

SHA1
020e50dc442771380a1d10ab24b8d36ea529e8eb

SHA256
8244b448ed6012c65a62cc3dde8d523023b2160ba1960ef7e461c507d4324022

SHA512
e8d437e402f7d7ef3602228be0f5d731d8213ae3d91b8f3ae071713a6a6df43b82180d4b252d8ef765eb42ceb8c637ae6db184e22e1b0fa229998468f20c821d

Download Submit
C:\Users\Admin\AppData\Roaming\remcos\logs.dat

Filesize
79B

MD5
734e3eb73cfe026e3fc9302dcff00337

SHA1
5640a5e647f11a93bd56bf0249049394d001ca78

SHA256
85894b80c6b752c0fe23260596ef3f12c890fd85bed164f6003faacaadef258d

SHA512
b0b7df5ccb1fd166c609007214603ad8567ed05cbd293ba7188901e607923edca4fee5d3cffea46d0057c06d2614307a9fed556a405c243ab2b1dfe6d4392398

Download Submit
memory/1832-19-0x0000000002800000-0x0000000002989000-memory.dmp

Filesize
1.5MB

Download
memory/1832-2-0x0000000000670000-0x0000000000671000-memory.dmp

Filesize
4KB

Download
memory/1832-1-0x00000000000E0000-0x00000000000E3000-memory.dmp

Filesize
12KB

Download
memory/1832-0-0x0000000000C30000-0x0000000000DB9000-memory.dmp

Filesize
1.5MB

Download
memory/1832-20-0x0000000000C30000-0x0000000000DB9000-memory.dmp

Filesize
1.5MB

Download
memory/1832-25-0x0000000000C30000-0x0000000000DB9000-memory.dmp

Filesize
1.5MB

Download
memory/2532-45-0x00000000002F0000-0x0000000000479000-memory.dmp

Filesize
1.5MB

Download
memory/2532-42-0x00000000002F0000-0x0000000000479000-memory.dmp

Filesize
1.5MB

Download
memory/2532-29-0x00000000002F0000-0x0000000000479000-memory.dmp

Filesize
1.5MB

Download
memory/2764-38-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

Filesize
4KB

Download
memory/3048-15-0x0000000000070000-0x0000000000090000-memory.dmp

Filesize
128KB

Download
memory/3048-3-0x0000000000070000-0x0000000000090000-memory.dmp

Filesize
128KB

Download
memory/3048-11-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

Filesize
4KB

Download
memory/3048-14-0x0000000000070000-0x0000000000090000-memory.dmp

Filesize
128KB

Download
memory/3048-5-0x0000000000070000-0x0000000000090000-memory.dmp

Filesize
128KB

Download
memory/3048-18-0x0000000000070000-0x0000000000090000-memory.dmp

Filesize
128KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads