remcos | 750cb3dbeaefd7109e8e69b66a141702bd4870afbb9704876272823ab7791b6a

Analysis

max time kernel
147s
max time network
148s
platform
windows10-2004_x64
resource
win10v2004-20250129-en
resource tags

arch:x64arch:x86image:win10v2004-20250129-enlocale:en-usos:windows10-2004-x64system
submitted
30-01-2025 16:03

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General

Target

CiscoSparkLauncher.dll
Size

2.6MB
MD5

e2e01305e938ea378a88658d81c0917f
SHA1

6b3dc7e13347f6fadadc2dbac7d3a3927d9e2aa6
SHA256

29c3c48f4dc84e7179881bc3767546878b2db89d418372f687edbd4a72ef0989
SHA512

5620ea58d2a7da0fe5d352ea1fe82e76ed84c31b2ae97b28a3ab3b25268f21c0a8eef8ca7baa05ab0f2c80a8125fc7e2441065eda11259b1f636be7b3d6c202d
SSDEEP

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

Score

10^/10

remcos enviameplata discovery rat

Malware Config

Extracted

Family

remcos

Botnet

EnviamePlata

enviameplata.kozow.com:800

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
enviame
mouse_option
false
mutex
EVP-5U91NI
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
384	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

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
2264	wmic.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
5096	schtasks.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2012	rundll32.exe
2012	rundll32.exe
2012	rundll32.exe
2012	rundll32.exe
2012	rundll32.exe
2012	rundll32.exe
2012	rundll32.exe
2012	rundll32.exe
2012	rundll32.exe
2012	rundll32.exe
2012	rundll32.exe
2012	rundll32.exe
2012	rundll32.exe
2012	rundll32.exe
2012	rundll32.exe
2012	rundll32.exe
2012	rundll32.exe
2012	rundll32.exe
2012	rundll32.exe
2012	rundll32.exe
2012	rundll32.exe
2012	rundll32.exe
2012	rundll32.exe
2012	rundll32.exe
2012	rundll32.exe
2012	rundll32.exe
2012	rundll32.exe
2012	rundll32.exe
2012	rundll32.exe
2012	rundll32.exe
2012	rundll32.exe
2012	rundll32.exe
2012	rundll32.exe
2012	rundll32.exe
2012	rundll32.exe
2012	rundll32.exe
2012	rundll32.exe
2012	rundll32.exe
2012	rundll32.exe
2012	rundll32.exe
2012	rundll32.exe
2012	rundll32.exe
2012	rundll32.exe
2012	rundll32.exe
2012	rundll32.exe
2012	rundll32.exe
2012	rundll32.exe
2012	rundll32.exe
2012	rundll32.exe
2012	rundll32.exe
2012	rundll32.exe
2012	rundll32.exe
2012	rundll32.exe
2012	rundll32.exe
2012	rundll32.exe
2012	rundll32.exe
2012	rundll32.exe
2012	rundll32.exe
2012	rundll32.exe
2012	rundll32.exe
2012	rundll32.exe
2012	rundll32.exe
2012	rundll32.exe
2012	rundll32.exe

Suspicious behavior: LoadsDriver 2 IoCs

pid	Process
660	Process not Found
660	Process not Found

Suspicious use of AdjustPrivilegeToken 42 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	2264	wmic.exe
Token: SeSecurityPrivilege	2264	wmic.exe
Token: SeTakeOwnershipPrivilege	2264	wmic.exe
Token: SeLoadDriverPrivilege	2264	wmic.exe
Token: SeSystemProfilePrivilege	2264	wmic.exe
Token: SeSystemtimePrivilege	2264	wmic.exe
Token: SeProfSingleProcessPrivilege	2264	wmic.exe
Token: SeIncBasePriorityPrivilege	2264	wmic.exe
Token: SeCreatePagefilePrivilege	2264	wmic.exe
Token: SeBackupPrivilege	2264	wmic.exe
Token: SeRestorePrivilege	2264	wmic.exe
Token: SeShutdownPrivilege	2264	wmic.exe
Token: SeDebugPrivilege	2264	wmic.exe
Token: SeSystemEnvironmentPrivilege	2264	wmic.exe
Token: SeRemoteShutdownPrivilege	2264	wmic.exe
Token: SeUndockPrivilege	2264	wmic.exe
Token: SeManageVolumePrivilege	2264	wmic.exe
Token: 33	2264	wmic.exe
Token: 34	2264	wmic.exe
Token: 35	2264	wmic.exe
Token: 36	2264	wmic.exe
Token: SeIncreaseQuotaPrivilege	2264	wmic.exe
Token: SeSecurityPrivilege	2264	wmic.exe
Token: SeTakeOwnershipPrivilege	2264	wmic.exe
Token: SeLoadDriverPrivilege	2264	wmic.exe
Token: SeSystemProfilePrivilege	2264	wmic.exe
Token: SeSystemtimePrivilege	2264	wmic.exe
Token: SeProfSingleProcessPrivilege	2264	wmic.exe
Token: SeIncBasePriorityPrivilege	2264	wmic.exe
Token: SeCreatePagefilePrivilege	2264	wmic.exe
Token: SeBackupPrivilege	2264	wmic.exe
Token: SeRestorePrivilege	2264	wmic.exe
Token: SeShutdownPrivilege	2264	wmic.exe
Token: SeDebugPrivilege	2264	wmic.exe
Token: SeSystemEnvironmentPrivilege	2264	wmic.exe
Token: SeRemoteShutdownPrivilege	2264	wmic.exe
Token: SeUndockPrivilege	2264	wmic.exe
Token: SeManageVolumePrivilege	2264	wmic.exe
Token: 33	2264	wmic.exe
Token: 34	2264	wmic.exe
Token: 35	2264	wmic.exe
Token: 36	2264	wmic.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
384	svchost.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2012 wrote to memory of 2264	2012	rundll32.exe	85
PID 2012 wrote to memory of 2264	2012	rundll32.exe	85
PID 2012 wrote to memory of 2860	2012	rundll32.exe	88
PID 2012 wrote to memory of 2860	2012	rundll32.exe	88
PID 2860 wrote to memory of 5096	2860	cmd.exe	90
PID 2860 wrote to memory of 5096	2860	cmd.exe	90
PID 2012 wrote to memory of 384	2012	rundll32.exe	91
PID 2012 wrote to memory of 384	2012	rundll32.exe	91
PID 2012 wrote to memory of 384	2012	rundll32.exe	91

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\CiscoSparkLauncher.dll,#1
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2012
- C:\Windows\System32\Wbem\wmic.exe
  wmic path win32_VideoController get name
  2⤵
  - Detects videocard installed
  - Suspicious use of AdjustPrivilegeToken
  PID:2264
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c schtasks /create /tn "nmIA6" /tr "C:\Users\Admin\AppData\Roaming\rundll32.exe" /sc onlogon /rl highest /f
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2860
- - C:\Windows\system32\schtasks.exe
    schtasks /create /tn "nmIA6" /tr "C:\Users\Admin\AppData\Roaming\rundll32.exe" /sc onlogon /rl highest /f
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:5096
- 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 use of SetWindowsHookEx
  PID:384

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 Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\ProgramData\enviame\logs.dat

Filesize
144B

MD5
46b14fb40b7ef94091bb6b41eadd89b9

SHA1
11f99d2c9cec3af62572bc0a8166d5c757b8e608

SHA256
efc637d686063c69fd7709c91e9f2dfa5cbc891dfefd113d9b097b181a345ca3

SHA512
e115b9a4c70b8af1842abfc9953d86a76f6b665b16bfc33c6aca6943e191d1549dd47f52117b559a0ff31610f046681c58033bb35080be0d1bced4df5942df5f

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

Filesize
481KB

MD5
1a8d61771647104c2f06edcbc06925ab

SHA1
09eed71174ac599848e48cc5d4480462333ddd4d

SHA256
c4e0fd98d56d31ea0acb0a63008c9971199e14b8b8227ef8fa2db923fe78830d

SHA512
d416f41e4ed729da0b3094333bb6564eb695ab1ed5e59aebbd4ab1142cae9541a56ce77ef350f5fc71aed232250ce411ed6c3a3cf2b0c877e2bb7863dc21eefe

Download Submit
memory/2012-0-0x0000000000400000-0x0000000000A1F000-memory.dmp

Filesize
6.1MB

Download
memory/2012-19-0x0000000068840000-0x0000000068F2C000-memory.dmp

Filesize
6.9MB

Download