remcos | abfb205a822213514d6f37c6266f8ae2af77a0a9a69a265385415d8f1f5dd094

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
11-11-2024 02:12

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General

Target

abfb205a822213514d6f37c6266f8ae2af77a0a9a69a265385415d8f1f5dd094.exe
Size

469KB
MD5

2f87f7406557caef3281973e21c65f16
SHA1

97357c5fa181b36a765fecd9391e83a9cef90d2f
SHA256

abfb205a822213514d6f37c6266f8ae2af77a0a9a69a265385415d8f1f5dd094
SHA512

0fe264ec1acef16e2886ed5ab4c6818ceb1c5dccbabcb35d33af37328fd9e40b4c146358dde6e29e38b91a0f872b74a01d19381596e2ff528f3786b0519a95c0
SSDEEP

12288:umnk7iLJbpIpiRL6I2WhSKQ9ZsfZQSfn9:WiLJbpI7I2WhQqZ7f9

Score

10^/10

remcos remotehost discovery evasion persistence rat trojan

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

planning-promised.gl.at.ply.gg:37721

Attributes

audio_folder
MicRecords
audio_record_time
5
connect_delay
0
connect_interval
1
copy_file
file.exe
copy_folder
system64
delete_file
true
hide_file
true
hide_keylog_file
false
install_flag
true
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
mouse_option
false
mutex
Rmc-B17O4C
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
startup_value
Security Backup
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

UAC bypass 3 TTPs 3 IoCs

evasion trojan

Bypass User Account Control

T1548.002

Disable or Modify Tools

T1562.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	reg.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	reg.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	reg.exe

Adds policy Run key to start application 2 TTPs 6 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\Security Backup = "\"C:\\ProgramData\\system64\\file.exe\""	abfb205a822213514d6f37c6266f8ae2af77a0a9a69a265385415d8f1f5dd094.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	file.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\Security Backup = "\"C:\\ProgramData\\system64\\file.exe\""	file.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	iexplore.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\Security Backup = "\"C:\\ProgramData\\system64\\file.exe\""	iexplore.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	abfb205a822213514d6f37c6266f8ae2af77a0a9a69a265385415d8f1f5dd094.exe

Checks computer location settings 2 TTPs 2 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation	abfb205a822213514d6f37c6266f8ae2af77a0a9a69a265385415d8f1f5dd094.exe
Key value queried	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation	WScript.exe

Deletes itself 1 IoCs

pid	Process
1232	WScript.exe

Executes dropped EXE 1 IoCs

pid	Process
3700	file.exe

Adds Run key to start application 2 TTPs 6 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Security Backup = "\"C:\\ProgramData\\system64\\file.exe\""	abfb205a822213514d6f37c6266f8ae2af77a0a9a69a265385415d8f1f5dd094.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Security Backup = "\"C:\\ProgramData\\system64\\file.exe\""	abfb205a822213514d6f37c6266f8ae2af77a0a9a69a265385415d8f1f5dd094.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Security Backup = "\"C:\\ProgramData\\system64\\file.exe\""	file.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Security Backup = "\"C:\\ProgramData\\system64\\file.exe\""	file.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Security Backup = "\"C:\\ProgramData\\system64\\file.exe\""	iexplore.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Security Backup = "\"C:\\ProgramData\\system64\\file.exe\""	iexplore.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 3700 set thread context of 3508	3700	file.exe	94
PID 3508 set thread context of 5080	3508	iexplore.exe	99

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 11 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	reg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	WScript.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	file.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	abfb205a822213514d6f37c6266f8ae2af77a0a9a69a265385415d8f1f5dd094.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	iexplore.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reg.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000_Classes\Local Settings	abfb205a822213514d6f37c6266f8ae2af77a0a9a69a265385415d8f1f5dd094.exe

Modifies registry key 1 TTPs 3 IoCs

Modify Registry

T1112

pid	Process
2480	reg.exe
664	reg.exe
3892	reg.exe

Suspicious behavior: MapViewOfSection 2 IoCs

pid	Process
3700	file.exe
3508	iexplore.exe

Suspicious use of WriteProcessMemory 35 IoCs

description	pid	Process	procid_target
PID 3244 wrote to memory of 1280	3244	abfb205a822213514d6f37c6266f8ae2af77a0a9a69a265385415d8f1f5dd094.exe	83
PID 3244 wrote to memory of 1280	3244	abfb205a822213514d6f37c6266f8ae2af77a0a9a69a265385415d8f1f5dd094.exe	83
PID 3244 wrote to memory of 1280	3244	abfb205a822213514d6f37c6266f8ae2af77a0a9a69a265385415d8f1f5dd094.exe	83
PID 1280 wrote to memory of 2480	1280	cmd.exe	85
PID 1280 wrote to memory of 2480	1280	cmd.exe	85
PID 1280 wrote to memory of 2480	1280	cmd.exe	85
PID 3244 wrote to memory of 1232	3244	abfb205a822213514d6f37c6266f8ae2af77a0a9a69a265385415d8f1f5dd094.exe	86
PID 3244 wrote to memory of 1232	3244	abfb205a822213514d6f37c6266f8ae2af77a0a9a69a265385415d8f1f5dd094.exe	86
PID 3244 wrote to memory of 1232	3244	abfb205a822213514d6f37c6266f8ae2af77a0a9a69a265385415d8f1f5dd094.exe	86
PID 1232 wrote to memory of 4232	1232	WScript.exe	90
PID 1232 wrote to memory of 4232	1232	WScript.exe	90
PID 1232 wrote to memory of 4232	1232	WScript.exe	90
PID 4232 wrote to memory of 3700	4232	cmd.exe	92
PID 4232 wrote to memory of 3700	4232	cmd.exe	92
PID 4232 wrote to memory of 3700	4232	cmd.exe	92
PID 3700 wrote to memory of 1680	3700	file.exe	93
PID 3700 wrote to memory of 1680	3700	file.exe	93
PID 3700 wrote to memory of 1680	3700	file.exe	93
PID 3700 wrote to memory of 3508	3700	file.exe	94
PID 3700 wrote to memory of 3508	3700	file.exe	94
PID 3700 wrote to memory of 3508	3700	file.exe	94
PID 3700 wrote to memory of 3508	3700	file.exe	94
PID 3508 wrote to memory of 1956	3508	iexplore.exe	97
PID 3508 wrote to memory of 1956	3508	iexplore.exe	97
PID 3508 wrote to memory of 1956	3508	iexplore.exe	97
PID 3508 wrote to memory of 5080	3508	iexplore.exe	99
PID 3508 wrote to memory of 5080	3508	iexplore.exe	99
PID 3508 wrote to memory of 5080	3508	iexplore.exe	99
PID 3508 wrote to memory of 5080	3508	iexplore.exe	99
PID 1680 wrote to memory of 664	1680	cmd.exe	100
PID 1680 wrote to memory of 664	1680	cmd.exe	100
PID 1680 wrote to memory of 664	1680	cmd.exe	100
PID 1956 wrote to memory of 3892	1956	cmd.exe	101
PID 1956 wrote to memory of 3892	1956	cmd.exe	101
PID 1956 wrote to memory of 3892	1956	cmd.exe	101

C:\Users\Admin\AppData\Local\Temp\abfb205a822213514d6f37c6266f8ae2af77a0a9a69a265385415d8f1f5dd094.exe
"C:\Users\Admin\AppData\Local\Temp\abfb205a822213514d6f37c6266f8ae2af77a0a9a69a265385415d8f1f5dd094.exe"
1⤵
- Adds policy Run key to start application
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:3244
- C:\Windows\SysWOW64\cmd.exe
  /k %windir%\System32\reg.exe ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1280
- - C:\Windows\SysWOW64\reg.exe
    C:\Windows\System32\reg.exe ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f
    3⤵
    - UAC bypass
    - System Location Discovery: System Language Discovery
    - Modifies registry key
    PID:2480
- C:\Windows\SysWOW64\WScript.exe
  "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\install.vbs"
  2⤵
  - Checks computer location settings
  - Deletes itself
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1232
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /c "C:\ProgramData\system64\file.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4232
  - - C:\ProgramData\system64\file.exe
      C:\ProgramData\system64\file.exe
      4⤵
      Adds policy Run key to start application
      Executes dropped EXE
      Adds Run key to start application
      Suspicious use of SetThreadContext
      System Location Discovery: System Language Discovery
      Suspicious behavior: MapViewOfSection
      Suspicious use of WriteProcessMemory
      PID:3700
    - - C:\Windows\SysWOW64\cmd.exe
        
        /k %windir%\System32\reg.exe ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f
        5⤵
        System Location Discovery: System Language Discovery
        Suspicious use of WriteProcessMemory
        
        PID:1680
      - C:\Windows\SysWOW64\reg.exe
        
        C:\Windows\System32\reg.exe ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f
        6⤵
        UAC bypass
        System Location Discovery: System Language Discovery
        Modifies registry key
        
        PID:664
    - - \??\c:\program files (x86)\internet explorer\iexplore.exe
        
        "c:\program files (x86)\internet explorer\iexplore.exe"
        5⤵
        Adds policy Run key to start application
        Adds Run key to start application
        Suspicious use of SetThreadContext
        System Location Discovery: System Language Discovery
        Suspicious behavior: MapViewOfSection
        Suspicious use of WriteProcessMemory
        
        PID:3508
      - C:\Windows\SysWOW64\cmd.exe
        
        /k %windir%\System32\reg.exe ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f
        6⤵
        System Location Discovery: System Language Discovery
        Suspicious use of WriteProcessMemory
        
        PID:1956
        
        C:\Windows\SysWOW64\reg.exe
        
        C:\Windows\System32\reg.exe ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f
        7⤵
        UAC bypass
        System Location Discovery: System Language Discovery
        Modifies registry key
        
        PID:3892
      - C:\Windows\SysWOW64\svchost.exe
        
        svchost.exe
        6⤵
        
        PID:5080

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Abuse Elevation Control Mechanism

T1548

Bypass User Account Control

T1548.002

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Abuse Elevation Control Mechanism

T1548

Bypass User Account Control

T1548.002

Impair Defenses

T1562

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\ProgramData\system64\file.exe

Filesize
469KB

MD5
2f87f7406557caef3281973e21c65f16

SHA1
97357c5fa181b36a765fecd9391e83a9cef90d2f

SHA256
abfb205a822213514d6f37c6266f8ae2af77a0a9a69a265385415d8f1f5dd094

SHA512
0fe264ec1acef16e2886ed5ab4c6818ceb1c5dccbabcb35d33af37328fd9e40b4c146358dde6e29e38b91a0f872b74a01d19381596e2ff528f3786b0519a95c0

Download Submit
C:\Users\Admin\AppData\Local\Temp\install.vbs

Filesize
626B

MD5
4fac9463f7921d4a207e02f73f751547

SHA1
eca3bc62e24d1aa531a63deecefab8b14f24da0b

SHA256
5b01a540001babc8051a23d3ddad5330ae7cb39984501815ccd74eba935c56ae

SHA512
0da79f7d8d478b743b874d5442eb8e5722fc21c3c488923b335c61d441027cd04ea789d0b1b35ad0e7b298dd79fb4db13f06f36a156366fd8c50aee9d63e121a

Download Submit
memory/3508-24-0x0000000001300000-0x000000000137F000-memory.dmp

Filesize
508KB

Download
memory/3508-20-0x0000000001300000-0x000000000137F000-memory.dmp

Filesize
508KB

Download
memory/3508-11-0x0000000001300000-0x000000000137F000-memory.dmp

Filesize
508KB

Download
memory/3508-28-0x0000000001300000-0x000000000137F000-memory.dmp

Filesize
508KB

Download
memory/3508-27-0x0000000001300000-0x000000000137F000-memory.dmp

Filesize
508KB

Download
memory/3508-16-0x0000000001300000-0x000000000137F000-memory.dmp

Filesize
508KB

Download
memory/3508-17-0x0000000001300000-0x000000000137F000-memory.dmp

Filesize
508KB

Download
memory/3508-18-0x0000000001300000-0x000000000137F000-memory.dmp

Filesize
508KB

Download
memory/3508-19-0x0000000001300000-0x000000000137F000-memory.dmp

Filesize
508KB

Download
memory/3508-10-0x0000000001300000-0x000000000137F000-memory.dmp

Filesize
508KB

Download
memory/3508-21-0x0000000001300000-0x000000000137F000-memory.dmp

Filesize
508KB

Download
memory/3508-22-0x0000000001300000-0x000000000137F000-memory.dmp

Filesize
508KB

Download
memory/3508-23-0x0000000001300000-0x000000000137F000-memory.dmp

Filesize
508KB

Download
memory/3508-9-0x0000000001300000-0x000000000137F000-memory.dmp

Filesize
508KB

Download
memory/3508-25-0x0000000001300000-0x000000000137F000-memory.dmp

Filesize
508KB

Download
memory/3508-26-0x0000000001300000-0x000000000137F000-memory.dmp

Filesize
508KB

Download
memory/5080-14-0x0000000001200000-0x000000000127F000-memory.dmp

Filesize
508KB

Download
memory/5080-15-0x0000000001200000-0x000000000127F000-memory.dmp

Filesize
508KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads