remcos | 85e751fe92f663c1a171dc9d6d56480941d991c5b652cfa9661abe02b7c0f0ab

Analysis

max time kernel
150s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
29-08-2024 04:37

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General

Target

AUDIENCIA DE CONCILIACIÓN EXTRAJUDICIAL proceso 8011001-2309-000-2021-00039-2017.exe
Size

1.3MB
MD5

c1bd62324c1c2ab68aa02cb65a77f379
SHA1

ed2ef0498de678798d543f7d6551f0fafdf2dafd
SHA256

8c0281e7890b713ecc149fa3f4280ec8f9b349d9d442e673aaa720c96c07dc5f
SHA512

0c8fcfae89c53667fadab41fba0e5996c5a8655e22c09ef284ad856deeafcf48d3fbba5233993e232c1788254290fda9df9069f43d851c1e56c1d46304892c49
SSDEEP

24576:KQiWqXXvZlKRrimS1rGDBb+Mk8KDU9fxw4GZeOmmW2mSV3FhkmRJj:X2X+RGbGDMMk5D4x+amW9S1Quj

Score

10^/10

remcos remotehost discovery persistence rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

access-companys.con-ip.com:3400

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
lodiss.dat
keylog_flag
false
keylog_folder
loscs
mouse_option
false
mutex
Rmc0021154-KTVBBR
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Capturas de pantalla
screenshot_path
%AppData%
screenshot_time
10
startup_value
take_screenshot_option
false
take_screenshot_time
5

Signatures

Remcos
Remcos is a closed-source remote control and surveillance software.
rat remcos

Suspicious use of NtCreateUserProcessOtherParentProcess 1 IoCs

description	pid	Process	procid_target
PID 1652 created 3448	1652	AUDIENCIA DE CONCILIACIÓN EXTRAJUDICIAL proceso 8011001-2309-000-2021-00039-2017.exe	56

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2392887640-1187051047-2909758433-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Dpoksj = "C:\\Users\\Admin\\AppData\\Roaming\\Dpoksj.exe"	AUDIENCIA DE CONCILIACIÓN EXTRAJUDICIAL proceso 8011001-2309-000-2021-00039-2017.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1652 set thread context of 4548	1652	AUDIENCIA DE CONCILIACIÓN EXTRAJUDICIAL proceso 8011001-2309-000-2021-00039-2017.exe	89

System Location Discovery: System Language Discovery 1 TTPs 2 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	AUDIENCIA DE CONCILIACIÓN EXTRAJUDICIAL proceso 8011001-2309-000-2021-00039-2017.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	InstallUtil.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1652	AUDIENCIA DE CONCILIACIÓN EXTRAJUDICIAL proceso 8011001-2309-000-2021-00039-2017.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1652	AUDIENCIA DE CONCILIACIÓN EXTRAJUDICIAL proceso 8011001-2309-000-2021-00039-2017.exe
Token: SeDebugPrivilege	1652	AUDIENCIA DE CONCILIACIÓN EXTRAJUDICIAL proceso 8011001-2309-000-2021-00039-2017.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4548	InstallUtil.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1652 wrote to memory of 4548	1652	AUDIENCIA DE CONCILIACIÓN EXTRAJUDICIAL proceso 8011001-2309-000-2021-00039-2017.exe	89
PID 1652 wrote to memory of 4548	1652	AUDIENCIA DE CONCILIACIÓN EXTRAJUDICIAL proceso 8011001-2309-000-2021-00039-2017.exe	89
PID 1652 wrote to memory of 4548	1652	AUDIENCIA DE CONCILIACIÓN EXTRAJUDICIAL proceso 8011001-2309-000-2021-00039-2017.exe	89
PID 1652 wrote to memory of 4548	1652	AUDIENCIA DE CONCILIACIÓN EXTRAJUDICIAL proceso 8011001-2309-000-2021-00039-2017.exe	89
PID 1652 wrote to memory of 4548	1652	AUDIENCIA DE CONCILIACIÓN EXTRAJUDICIAL proceso 8011001-2309-000-2021-00039-2017.exe	89
PID 1652 wrote to memory of 4548	1652	AUDIENCIA DE CONCILIACIÓN EXTRAJUDICIAL proceso 8011001-2309-000-2021-00039-2017.exe	89
PID 1652 wrote to memory of 4548	1652	AUDIENCIA DE CONCILIACIÓN EXTRAJUDICIAL proceso 8011001-2309-000-2021-00039-2017.exe	89
PID 1652 wrote to memory of 4548	1652	AUDIENCIA DE CONCILIACIÓN EXTRAJUDICIAL proceso 8011001-2309-000-2021-00039-2017.exe	89
PID 1652 wrote to memory of 4548	1652	AUDIENCIA DE CONCILIACIÓN EXTRAJUDICIAL proceso 8011001-2309-000-2021-00039-2017.exe	89
PID 1652 wrote to memory of 4548	1652	AUDIENCIA DE CONCILIACIÓN EXTRAJUDICIAL proceso 8011001-2309-000-2021-00039-2017.exe	89
PID 1652 wrote to memory of 4548	1652	AUDIENCIA DE CONCILIACIÓN EXTRAJUDICIAL proceso 8011001-2309-000-2021-00039-2017.exe	89
PID 1652 wrote to memory of 4548	1652	AUDIENCIA DE CONCILIACIÓN EXTRAJUDICIAL proceso 8011001-2309-000-2021-00039-2017.exe	89

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:3448
- C:\Users\Admin\AppData\Local\Temp\AUDIENCIA DE CONCILIACIÓN EXTRAJUDICIAL proceso 8011001-2309-000-2021-00039-2017.exe
  "C:\Users\Admin\AppData\Local\Temp\AUDIENCIA DE CONCILIACIÓN EXTRAJUDICIAL proceso 8011001-2309-000-2021-00039-2017.exe"
  2⤵
  - Suspicious use of NtCreateUserProcessOtherParentProcess
  - Adds Run key to start application
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1652
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:4548

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

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\loscs\lodiss.dat

Filesize
184B

MD5
404bcec5a72237d3d6f965166885c96e

SHA1
5152a8e9931c1bddf5e4cc38d2aeeeaa149b9661

SHA256
650d5572b113c2678a5d7ed82180da75853a51e848129ebbd3224ab38c511786

SHA512
c1c73f65cf07d11914c562211137ef51dcded08c8d51ef712bf73b5d897d0b0a11fd6caca0941c5e618040ed72edbc91de8a630e383d8c66564bd161d225a86d

Download Submit
memory/1652-0-0x000000007476E000-0x000000007476F000-memory.dmp

Filesize
4KB

Download
memory/1652-1-0x0000000000AD0000-0x0000000000C20000-memory.dmp

Filesize
1.3MB

Download
memory/1652-2-0x0000000005470000-0x000000000558E000-memory.dmp

Filesize
1.1MB

Download
memory/1652-4-0x0000000005470000-0x0000000005588000-memory.dmp

Filesize
1.1MB

Download
memory/1652-8-0x0000000005470000-0x0000000005588000-memory.dmp

Filesize
1.1MB

Download
memory/1652-60-0x0000000005470000-0x0000000005588000-memory.dmp

Filesize
1.1MB

Download
memory/1652-66-0x0000000005470000-0x0000000005588000-memory.dmp

Filesize
1.1MB

Download
memory/1652-64-0x0000000005470000-0x0000000005588000-memory.dmp

Filesize
1.1MB

Download
memory/1652-62-0x0000000005470000-0x0000000005588000-memory.dmp

Filesize
1.1MB

Download
memory/1652-58-0x0000000005470000-0x0000000005588000-memory.dmp

Filesize
1.1MB

Download
memory/1652-57-0x0000000005470000-0x0000000005588000-memory.dmp

Filesize
1.1MB

Download
memory/1652-54-0x0000000005470000-0x0000000005588000-memory.dmp

Filesize
1.1MB

Download
memory/1652-52-0x0000000005470000-0x0000000005588000-memory.dmp

Filesize
1.1MB

Download
memory/1652-50-0x0000000005470000-0x0000000005588000-memory.dmp

Filesize
1.1MB

Download
memory/1652-46-0x0000000005470000-0x0000000005588000-memory.dmp

Filesize
1.1MB

Download
memory/1652-44-0x0000000005470000-0x0000000005588000-memory.dmp

Filesize
1.1MB

Download
memory/1652-42-0x0000000005470000-0x0000000005588000-memory.dmp

Filesize
1.1MB

Download
memory/1652-40-0x0000000005470000-0x0000000005588000-memory.dmp

Filesize
1.1MB

Download
memory/1652-38-0x0000000005470000-0x0000000005588000-memory.dmp

Filesize
1.1MB

Download
memory/1652-34-0x0000000005470000-0x0000000005588000-memory.dmp

Filesize
1.1MB

Download
memory/1652-32-0x0000000005470000-0x0000000005588000-memory.dmp

Filesize
1.1MB

Download
memory/1652-30-0x0000000005470000-0x0000000005588000-memory.dmp

Filesize
1.1MB

Download
memory/1652-28-0x0000000005470000-0x0000000005588000-memory.dmp

Filesize
1.1MB

Download
memory/1652-26-0x0000000005470000-0x0000000005588000-memory.dmp

Filesize
1.1MB

Download
memory/1652-24-0x0000000005470000-0x0000000005588000-memory.dmp

Filesize
1.1MB

Download
memory/1652-22-0x0000000005470000-0x0000000005588000-memory.dmp

Filesize
1.1MB

Download
memory/1652-20-0x0000000005470000-0x0000000005588000-memory.dmp

Filesize
1.1MB

Download
memory/1652-18-0x0000000005470000-0x0000000005588000-memory.dmp

Filesize
1.1MB

Download
memory/1652-14-0x0000000005470000-0x0000000005588000-memory.dmp

Filesize
1.1MB

Download
memory/1652-12-0x0000000005470000-0x0000000005588000-memory.dmp

Filesize
1.1MB

Download
memory/1652-10-0x0000000005470000-0x0000000005588000-memory.dmp

Filesize
1.1MB

Download
memory/1652-6-0x0000000005470000-0x0000000005588000-memory.dmp

Filesize
1.1MB

Download
memory/1652-48-0x0000000005470000-0x0000000005588000-memory.dmp

Filesize
1.1MB

Download
memory/1652-36-0x0000000005470000-0x0000000005588000-memory.dmp

Filesize
1.1MB

Download
memory/1652-16-0x0000000005470000-0x0000000005588000-memory.dmp

Filesize
1.1MB

Download
memory/1652-3-0x0000000005470000-0x0000000005588000-memory.dmp

Filesize
1.1MB

Download
memory/1652-1077-0x0000000074760000-0x0000000074F10000-memory.dmp

Filesize
7.7MB

Download
memory/1652-1079-0x0000000074760000-0x0000000074F10000-memory.dmp

Filesize
7.7MB

Download
memory/1652-1078-0x0000000005690000-0x0000000005728000-memory.dmp

Filesize
608KB

Download
memory/1652-1080-0x0000000005840000-0x000000000588C000-memory.dmp

Filesize
304KB

Download
memory/1652-1084-0x0000000074760000-0x0000000074F10000-memory.dmp

Filesize
7.7MB

Download
memory/1652-1085-0x0000000074760000-0x0000000074F10000-memory.dmp

Filesize
7.7MB

Download
memory/1652-1086-0x0000000074760000-0x0000000074F10000-memory.dmp

Filesize
7.7MB

Download
memory/1652-1087-0x0000000074760000-0x0000000074F10000-memory.dmp

Filesize
7.7MB

Download
memory/1652-1088-0x0000000006040000-0x00000000065E4000-memory.dmp

Filesize
5.6MB

Download
memory/1652-1089-0x0000000005AF0000-0x0000000005B44000-memory.dmp

Filesize
336KB

Download
memory/1652-1095-0x0000000074760000-0x0000000074F10000-memory.dmp

Filesize
7.7MB

Download
memory/4548-1094-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4548-1108-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download