remcos | 092d49631de2e9d2eee8cdc2f2593626477db3b91244a690dce55f919f3b40e2

Analysis

max time kernel
150s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
04-10-2024 17:29

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General

Target

pago.bcp.pdf.exe
Size

1.4MB
MD5

092beeec1cfbe99c40299d954bacc8da
SHA1

55d56f40c256fa3eab78e3a58d5584894393e673
SHA256

a0805b60c79c0edd1b7acee3ab9dc807e1c065c4c2575bceefe0ccf7f6524471
SHA512

0515b42cf01c247f4096fd50df8c4f28c61bd378b7ebf11c02aca9fad0cca34c7f48eca5f1ecd3641be17e89d08b71569ee52934313c1b86b8f3280e985a0814
SSDEEP

24576:KSEM0TpgTCUTJEjSE80TtgTHUTRrL63LYi+t/eW5934XskzuoUuOxtHmURi3AEFV:XkRcskzUuytHmz3AE

Score

10^/10

remcos remotehost discovery persistence rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

212.162.149.42:7118

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
logs.dat
keylog_flag
false
keylog_folder
remcos
mouse_option
false
mutex
Rmc-YP127Q
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
startup_value
Remcos
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 3156 created 3496	3156	pago.bcp.pdf.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-1-5-21-1194130065-3471212556-1656947724-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Efrllz = "C:\\Users\\Admin\\AppData\\Roaming\\Efrllz.exe"	pago.bcp.pdf.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3156 set thread context of 3932	3156	pago.bcp.pdf.exe	87

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	pago.bcp.pdf.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	InstallUtil.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
3156	pago.bcp.pdf.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3932	InstallUtil.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3156	pago.bcp.pdf.exe
Token: SeDebugPrivilege	3156	pago.bcp.pdf.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 3156 wrote to memory of 3932	3156	pago.bcp.pdf.exe	87
PID 3156 wrote to memory of 3932	3156	pago.bcp.pdf.exe	87
PID 3156 wrote to memory of 3932	3156	pago.bcp.pdf.exe	87
PID 3156 wrote to memory of 3932	3156	pago.bcp.pdf.exe	87
PID 3156 wrote to memory of 3932	3156	pago.bcp.pdf.exe	87
PID 3156 wrote to memory of 3932	3156	pago.bcp.pdf.exe	87
PID 3156 wrote to memory of 3932	3156	pago.bcp.pdf.exe	87
PID 3156 wrote to memory of 3932	3156	pago.bcp.pdf.exe	87
PID 3156 wrote to memory of 3932	3156	pago.bcp.pdf.exe	87
PID 3156 wrote to memory of 3932	3156	pago.bcp.pdf.exe	87
PID 3156 wrote to memory of 3932	3156	pago.bcp.pdf.exe	87
PID 3156 wrote to memory of 3932	3156	pago.bcp.pdf.exe	87

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:3496
- C:\Users\Admin\AppData\Local\Temp\pago.bcp.pdf.exe
  "C:\Users\Admin\AppData\Local\Temp\pago.bcp.pdf.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:3156
- 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 behavior: GetForegroundWindowSpam
  PID:3932

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

memory/3156-0-0x00000000749AE000-0x00000000749AF000-memory.dmp

Filesize
4KB

Download
memory/3156-1-0x0000000000D00000-0x0000000000E62000-memory.dmp

Filesize
1.4MB

Download
memory/3156-3-0x00000000749A0000-0x0000000075150000-memory.dmp

Filesize
7.7MB

Download
memory/3156-2-0x0000000005790000-0x00000000057A2000-memory.dmp

Filesize
72KB

Download
memory/3156-4-0x0000000006350000-0x000000000646C000-memory.dmp

Filesize
1.1MB

Download
memory/3156-5-0x0000000006350000-0x0000000006466000-memory.dmp

Filesize
1.1MB

Download
memory/3156-20-0x0000000006350000-0x0000000006466000-memory.dmp

Filesize
1.1MB

Download
memory/3156-18-0x0000000006350000-0x0000000006466000-memory.dmp

Filesize
1.1MB

Download
memory/3156-16-0x0000000006350000-0x0000000006466000-memory.dmp

Filesize
1.1MB

Download
memory/3156-14-0x0000000006350000-0x0000000006466000-memory.dmp

Filesize
1.1MB

Download
memory/3156-12-0x0000000006350000-0x0000000006466000-memory.dmp

Filesize
1.1MB

Download
memory/3156-10-0x0000000006350000-0x0000000006466000-memory.dmp

Filesize
1.1MB

Download
memory/3156-8-0x0000000006350000-0x0000000006466000-memory.dmp

Filesize
1.1MB

Download
memory/3156-6-0x0000000006350000-0x0000000006466000-memory.dmp

Filesize
1.1MB

Download
memory/3156-22-0x0000000006350000-0x0000000006466000-memory.dmp

Filesize
1.1MB

Download
memory/3156-28-0x0000000006350000-0x0000000006466000-memory.dmp

Filesize
1.1MB

Download
memory/3156-26-0x0000000006350000-0x0000000006466000-memory.dmp

Filesize
1.1MB

Download
memory/3156-34-0x0000000006350000-0x0000000006466000-memory.dmp

Filesize
1.1MB

Download
memory/3156-58-0x0000000006350000-0x0000000006466000-memory.dmp

Filesize
1.1MB

Download
memory/3156-54-0x0000000006350000-0x0000000006466000-memory.dmp

Filesize
1.1MB

Download
memory/3156-64-0x0000000006350000-0x0000000006466000-memory.dmp

Filesize
1.1MB

Download
memory/3156-62-0x0000000006350000-0x0000000006466000-memory.dmp

Filesize
1.1MB

Download
memory/3156-60-0x0000000006350000-0x0000000006466000-memory.dmp

Filesize
1.1MB

Download
memory/3156-68-0x0000000006350000-0x0000000006466000-memory.dmp

Filesize
1.1MB

Download
memory/3156-66-0x0000000006350000-0x0000000006466000-memory.dmp

Filesize
1.1MB

Download
memory/3156-52-0x0000000006350000-0x0000000006466000-memory.dmp

Filesize
1.1MB

Download
memory/3156-46-0x0000000006350000-0x0000000006466000-memory.dmp

Filesize
1.1MB

Download
memory/3156-44-0x0000000006350000-0x0000000006466000-memory.dmp

Filesize
1.1MB

Download
memory/3156-42-0x0000000006350000-0x0000000006466000-memory.dmp

Filesize
1.1MB

Download
memory/3156-40-0x0000000006350000-0x0000000006466000-memory.dmp

Filesize
1.1MB

Download
memory/3156-38-0x0000000006350000-0x0000000006466000-memory.dmp

Filesize
1.1MB

Download
memory/3156-32-0x0000000006350000-0x0000000006466000-memory.dmp

Filesize
1.1MB

Download
memory/3156-56-0x0000000006350000-0x0000000006466000-memory.dmp

Filesize
1.1MB

Download
memory/3156-50-0x0000000006350000-0x0000000006466000-memory.dmp

Filesize
1.1MB

Download
memory/3156-48-0x0000000006350000-0x0000000006466000-memory.dmp

Filesize
1.1MB

Download
memory/3156-36-0x0000000006350000-0x0000000006466000-memory.dmp

Filesize
1.1MB

Download
memory/3156-30-0x0000000006350000-0x0000000006466000-memory.dmp

Filesize
1.1MB

Download
memory/3156-24-0x0000000006350000-0x0000000006466000-memory.dmp

Filesize
1.1MB

Download
memory/3156-1079-0x00000000749A0000-0x0000000075150000-memory.dmp

Filesize
7.7MB

Download
memory/3156-1080-0x0000000006540000-0x00000000065D6000-memory.dmp

Filesize
600KB

Download
memory/3156-1081-0x00000000065E0000-0x000000000662C000-memory.dmp

Filesize
304KB

Download
memory/3156-1084-0x00000000749A0000-0x0000000075150000-memory.dmp

Filesize
7.7MB

Download
memory/3156-1088-0x00000000749A0000-0x0000000075150000-memory.dmp

Filesize
7.7MB

Download
memory/3156-1087-0x00000000749AE000-0x00000000749AF000-memory.dmp

Filesize
4KB

Download
memory/3156-1086-0x00000000749A0000-0x0000000075150000-memory.dmp

Filesize
7.7MB

Download
memory/3156-1089-0x00000000749A0000-0x0000000075150000-memory.dmp

Filesize
7.7MB

Download
memory/3156-1090-0x00000000749A0000-0x0000000075150000-memory.dmp

Filesize
7.7MB

Download
memory/3156-1091-0x0000000006F30000-0x00000000074D4000-memory.dmp

Filesize
5.6MB

Download
memory/3156-1092-0x0000000006820000-0x0000000006874000-memory.dmp

Filesize
336KB

Download
memory/3156-1100-0x00000000749A0000-0x0000000075150000-memory.dmp

Filesize
7.7MB

Download
memory/3932-1098-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3932-1107-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download