remcos | bb20c46a817a7c0cdffb513ec4d14bd2026ea70b8f1a0ec07bb699cd0d70a29a

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20241007-es
resource tags

arch:x64arch:x86image:win10v2004-20241007-eslocale:es-esos:windows10-2004-x64systemwindows
submitted
20-12-2024 16:37

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General

Target

DEMANDA LABORAL JUDICIAL 16524515/CiscoSparkLauncher.dll
Size

2.6MB
MD5

e2e01305e938ea378a88658d81c0917f
SHA1

6b3dc7e13347f6fadadc2dbac7d3a3927d9e2aa6
SHA256

29c3c48f4dc84e7179881bc3767546878b2db89d418372f687edbd4a72ef0989
SHA512

5620ea58d2a7da0fe5d352ea1fe82e76ed84c31b2ae97b28a3ab3b25268f21c0a8eef8ca7baa05ab0f2c80a8125fc7e2441065eda11259b1f636be7b3d6c202d
SSDEEP

49152:aGtlqOIU6iJVwASOcO81WPz3qjFr6t1Dt+w+PpmtsHcFhKgwzfQHdPWkpRs6:m+18rcDINHAhKQH8S

Score

10^/10

remcos remotehost discovery rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

december02.kozow.com:5151

Attributes

audio_folder
MicRecords
audio_path
ApplicationPath
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-O92SE5
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
Remcos family
remcos

Executes dropped EXE 1 IoCs

pid	Process
4780	svchost.exe

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	svchost.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
2776	schtasks.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
1464	rundll32.exe
1464	rundll32.exe
1464	rundll32.exe
1464	rundll32.exe
1464	rundll32.exe
1464	rundll32.exe
1464	rundll32.exe
1464	rundll32.exe
1464	rundll32.exe
1464	rundll32.exe
1464	rundll32.exe
1464	rundll32.exe
1464	rundll32.exe
1464	rundll32.exe
1464	rundll32.exe
1464	rundll32.exe
1464	rundll32.exe
1464	rundll32.exe
1464	rundll32.exe
1464	rundll32.exe
1464	rundll32.exe
1464	rundll32.exe
1464	rundll32.exe
1464	rundll32.exe
1464	rundll32.exe
1464	rundll32.exe
1464	rundll32.exe
1464	rundll32.exe
1464	rundll32.exe
1464	rundll32.exe
1464	rundll32.exe
1464	rundll32.exe
1464	rundll32.exe
1464	rundll32.exe
1464	rundll32.exe
1464	rundll32.exe
1464	rundll32.exe
1464	rundll32.exe
1464	rundll32.exe
1464	rundll32.exe
1464	rundll32.exe
1464	rundll32.exe
1464	rundll32.exe
1464	rundll32.exe
1464	rundll32.exe
1464	rundll32.exe
1464	rundll32.exe
1464	rundll32.exe
1464	rundll32.exe
1464	rundll32.exe
1464	rundll32.exe
1464	rundll32.exe
1464	rundll32.exe
1464	rundll32.exe
1464	rundll32.exe
1464	rundll32.exe
1464	rundll32.exe
1464	rundll32.exe
1464	rundll32.exe
1464	rundll32.exe
1464	rundll32.exe
1464	rundll32.exe
1464	rundll32.exe
1464	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
4780	svchost.exe

Suspicious behavior: LoadsDriver 2 IoCs

pid	Process
664	Process not Found
664	Process not Found

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1464 wrote to memory of 3776	1464	rundll32.exe	84
PID 1464 wrote to memory of 3776	1464	rundll32.exe	84
PID 3776 wrote to memory of 2776	3776	cmd.exe	86
PID 3776 wrote to memory of 2776	3776	cmd.exe	86
PID 1464 wrote to memory of 4780	1464	rundll32.exe	87
PID 1464 wrote to memory of 4780	1464	rundll32.exe	87
PID 1464 wrote to memory of 4780	1464	rundll32.exe	87

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Windows\system32\rundll32.exe
rundll32.exe "C:\Users\Admin\AppData\Local\Temp\DEMANDA LABORAL JUDICIAL 16524515\CiscoSparkLauncher.dll",#1
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1464
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c schtasks /create /tn "Yt4Bvc2G" /tr "C:\Users\Admin\AppData\Roaming\rundll32.exe" /sc onlogon /rl highest /f
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3776
- - C:\Windows\system32\schtasks.exe
    schtasks /create /tn "Yt4Bvc2G" /tr "C:\Users\Admin\AppData\Roaming\rundll32.exe" /sc onlogon /rl highest /f
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2776
- C:\Users\Admin\AppData\Local\Temp\svchost.exe
  "C:\Users\Admin\AppData\Local\Temp\svchost.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: GetForegroundWindowSpam
  PID:4780

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\svchost.exe

Filesize
481KB

MD5
34e7858467bd37a5fe1b75dcd73bdf19

SHA1
60677610b2c666cca1c212b66441231cea964434

SHA256
11cdb65e5b007e249a51a7410da0653ec6c6b28f68b33e1de88ac3989dd745d6

SHA512
bb6ea5a30f6060dd68ef51a3cfcff76a20337155eb3ac95a0fdd19240782d07d947046788833983483908728f7f119fc858930ba9d80b823f7e3582054824ac9

Download Submit
memory/1464-0-0x0000000000400000-0x00000000009BD000-memory.dmp

Filesize
5.7MB

Download
memory/1464-18-0x0000000068840000-0x0000000068ED2000-memory.dmp

Filesize
6.6MB

Download