remcos | abfb205a822213514d6f37c6266f8ae2af77a0a9a69a265385415d8f1f5dd094

Analysis

max time kernel
149s
max time network
144s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-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
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
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

Deletes itself 1 IoCs

pid	Process
2600	WScript.exe

Executes dropped EXE 1 IoCs

pid	Process
2628	file.exe

Loads dropped DLL 2 IoCs

pid	Process
1948	cmd.exe
1948	cmd.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-1-5-21-3533259084-2542256011-65585152-1000\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-1-5-21-3533259084-2542256011-65585152-1000\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
Set value (str)	\REGISTRY\USER\S-1-5-21-3533259084-2542256011-65585152-1000\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

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2628 set thread context of 2592	2628	file.exe	38
PID 2592 set thread context of 800	2592	iexplore.exe	43

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

Modifies registry key 1 TTPs 3 IoCs

Modify Registry

T1112

pid	Process
2732	reg.exe
528	reg.exe
924	reg.exe

Suspicious behavior: MapViewOfSection 2 IoCs

pid	Process
2628	file.exe
2592	iexplore.exe

Suspicious use of WriteProcessMemory 46 IoCs

description	pid	Process	procid_target
PID 2724 wrote to memory of 2696	2724	abfb205a822213514d6f37c6266f8ae2af77a0a9a69a265385415d8f1f5dd094.exe	30
PID 2724 wrote to memory of 2696	2724	abfb205a822213514d6f37c6266f8ae2af77a0a9a69a265385415d8f1f5dd094.exe	30
PID 2724 wrote to memory of 2696	2724	abfb205a822213514d6f37c6266f8ae2af77a0a9a69a265385415d8f1f5dd094.exe	30
PID 2724 wrote to memory of 2696	2724	abfb205a822213514d6f37c6266f8ae2af77a0a9a69a265385415d8f1f5dd094.exe	30
PID 2696 wrote to memory of 2732	2696	cmd.exe	32
PID 2696 wrote to memory of 2732	2696	cmd.exe	32
PID 2696 wrote to memory of 2732	2696	cmd.exe	32
PID 2696 wrote to memory of 2732	2696	cmd.exe	32
PID 2724 wrote to memory of 2600	2724	abfb205a822213514d6f37c6266f8ae2af77a0a9a69a265385415d8f1f5dd094.exe	33
PID 2724 wrote to memory of 2600	2724	abfb205a822213514d6f37c6266f8ae2af77a0a9a69a265385415d8f1f5dd094.exe	33
PID 2724 wrote to memory of 2600	2724	abfb205a822213514d6f37c6266f8ae2af77a0a9a69a265385415d8f1f5dd094.exe	33
PID 2724 wrote to memory of 2600	2724	abfb205a822213514d6f37c6266f8ae2af77a0a9a69a265385415d8f1f5dd094.exe	33
PID 2600 wrote to memory of 1948	2600	WScript.exe	34
PID 2600 wrote to memory of 1948	2600	WScript.exe	34
PID 2600 wrote to memory of 1948	2600	WScript.exe	34
PID 2600 wrote to memory of 1948	2600	WScript.exe	34
PID 1948 wrote to memory of 2628	1948	cmd.exe	36
PID 1948 wrote to memory of 2628	1948	cmd.exe	36
PID 1948 wrote to memory of 2628	1948	cmd.exe	36
PID 1948 wrote to memory of 2628	1948	cmd.exe	36
PID 2628 wrote to memory of 2584	2628	file.exe	37
PID 2628 wrote to memory of 2584	2628	file.exe	37
PID 2628 wrote to memory of 2584	2628	file.exe	37
PID 2628 wrote to memory of 2584	2628	file.exe	37
PID 2628 wrote to memory of 2592	2628	file.exe	38
PID 2628 wrote to memory of 2592	2628	file.exe	38
PID 2628 wrote to memory of 2592	2628	file.exe	38
PID 2628 wrote to memory of 2592	2628	file.exe	38
PID 2628 wrote to memory of 2592	2628	file.exe	38
PID 2584 wrote to memory of 528	2584	cmd.exe	40
PID 2584 wrote to memory of 528	2584	cmd.exe	40
PID 2584 wrote to memory of 528	2584	cmd.exe	40
PID 2584 wrote to memory of 528	2584	cmd.exe	40
PID 2592 wrote to memory of 472	2592	iexplore.exe	41
PID 2592 wrote to memory of 472	2592	iexplore.exe	41
PID 2592 wrote to memory of 472	2592	iexplore.exe	41
PID 2592 wrote to memory of 472	2592	iexplore.exe	41
PID 2592 wrote to memory of 800	2592	iexplore.exe	43
PID 2592 wrote to memory of 800	2592	iexplore.exe	43
PID 2592 wrote to memory of 800	2592	iexplore.exe	43
PID 2592 wrote to memory of 800	2592	iexplore.exe	43
PID 2592 wrote to memory of 800	2592	iexplore.exe	43
PID 472 wrote to memory of 924	472	cmd.exe	44
PID 472 wrote to memory of 924	472	cmd.exe	44
PID 472 wrote to memory of 924	472	cmd.exe	44
PID 472 wrote to memory of 924	472	cmd.exe	44

C:\Users\Admin\AppData\Local\Temp\abfb205a822213514d6f37c6266f8ae2af77a0a9a69a265385415d8f1f5dd094.exe
"C:\Users\Admin\AppData\Local\Temp\abfb205a822213514d6f37c6266f8ae2af77a0a9a69a265385415d8f1f5dd094.exe"
1⤵
- Adds policy Run key to start application
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2724
- 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:2696
- - 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:2732
- C:\Windows\SysWOW64\WScript.exe
  "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\install.vbs"
  2⤵
  - Deletes itself
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2600
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /c "C:\ProgramData\system64\file.exe"
    3⤵
    - Loads dropped DLL
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:1948
  - - 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:2628
    - - 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:2584
      - 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:528
    - - \??\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:2592
      - 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:472
        
        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:924
      - C:\Windows\SysWOW64\svchost.exe
        
        svchost.exe
        6⤵
        
        PID:800

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

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/800-17-0x00000000000C0000-0x000000000013F000-memory.dmp

Filesize
508KB

Download
memory/800-18-0x00000000000C0000-0x000000000013F000-memory.dmp

Filesize
508KB

Download
memory/800-16-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2592-20-0x0000000000080000-0x00000000000FF000-memory.dmp

Filesize
508KB

Download
memory/2592-24-0x0000000000080000-0x00000000000FF000-memory.dmp

Filesize
508KB

Download
memory/2592-12-0x0000000000080000-0x00000000000FF000-memory.dmp

Filesize
508KB

Download
memory/2592-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2592-19-0x0000000000080000-0x00000000000FF000-memory.dmp

Filesize
508KB

Download
memory/2592-11-0x0000000000080000-0x00000000000FF000-memory.dmp

Filesize
508KB

Download
memory/2592-21-0x0000000000080000-0x00000000000FF000-memory.dmp

Filesize
508KB

Download
memory/2592-22-0x0000000000080000-0x00000000000FF000-memory.dmp

Filesize
508KB

Download
memory/2592-23-0x0000000000080000-0x00000000000FF000-memory.dmp

Filesize
508KB

Download
memory/2592-13-0x0000000000080000-0x00000000000FF000-memory.dmp

Filesize
508KB

Download
memory/2592-25-0x0000000000080000-0x00000000000FF000-memory.dmp

Filesize
508KB

Download
memory/2592-26-0x0000000000080000-0x00000000000FF000-memory.dmp

Filesize
508KB

Download
memory/2592-27-0x0000000000080000-0x00000000000FF000-memory.dmp

Filesize
508KB

Download
memory/2592-28-0x0000000000080000-0x00000000000FF000-memory.dmp

Filesize
508KB

Download
memory/2592-29-0x0000000000080000-0x00000000000FF000-memory.dmp

Filesize
508KB

Download
memory/2592-30-0x0000000000080000-0x00000000000FF000-memory.dmp

Filesize
508KB

Download
memory/2592-31-0x0000000000080000-0x00000000000FF000-memory.dmp

Filesize
508KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads