remcos | b2f869811f352a20436321bb06d9f0a18141ec9dd89520ddea672adebc7cd585

Analysis

max time kernel
118s
max time network
120s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
24-11-2024 19:38

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General

Target

b2f869811f352a20436321bb06d9f0a18141ec9dd89520ddea672adebc7cd585N.exe
Size

96KB
MD5

9414c3955b307a2ba254f5d642cd9aa0
SHA1

411266b530c85a2e63984fd4c1f26a245a22ea89
SHA256

b2f869811f352a20436321bb06d9f0a18141ec9dd89520ddea672adebc7cd585
SHA512

7b24dad711e01e35e3e1f2546fa6310c24f8d45e202580fb275e05507e3bf44dd1ec08614fb07df1458cb4336947a4812436c4acba5fafbe982b6b7a9b35889c
SSDEEP

1536:C/sBaIs0SF9PhCaeBzfqpVwotboHsTPmQtWgfnre6tgiPZqWSunFh:eaaCzf+VBtbJT7t7fnTZqTuFh

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
Remcos family
remcos

Suspicious use of NtCreateUserProcessOtherParentProcess 1 IoCs

description	pid	Process	procid_target
PID 1680 created 3432	1680	b2f869811f352a20436321bb06d9f0a18141ec9dd89520ddea672adebc7cd585N.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-1-5-21-493223053-2004649691-1575712786-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Fsdfrtnzn = "C:\\Users\\Admin\\AppData\\Roaming\\Fsdfrtnzn.exe"	b2f869811f352a20436321bb06d9f0a18141ec9dd89520ddea672adebc7cd585N.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1680 set thread context of 4836	1680	b2f869811f352a20436321bb06d9f0a18141ec9dd89520ddea672adebc7cd585N.exe	98

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	b2f869811f352a20436321bb06d9f0a18141ec9dd89520ddea672adebc7cd585N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	InstallUtil.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1680	b2f869811f352a20436321bb06d9f0a18141ec9dd89520ddea672adebc7cd585N.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1680	b2f869811f352a20436321bb06d9f0a18141ec9dd89520ddea672adebc7cd585N.exe
Token: SeDebugPrivilege	1680	b2f869811f352a20436321bb06d9f0a18141ec9dd89520ddea672adebc7cd585N.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1680 wrote to memory of 4836	1680	b2f869811f352a20436321bb06d9f0a18141ec9dd89520ddea672adebc7cd585N.exe	98
PID 1680 wrote to memory of 4836	1680	b2f869811f352a20436321bb06d9f0a18141ec9dd89520ddea672adebc7cd585N.exe	98
PID 1680 wrote to memory of 4836	1680	b2f869811f352a20436321bb06d9f0a18141ec9dd89520ddea672adebc7cd585N.exe	98
PID 1680 wrote to memory of 4836	1680	b2f869811f352a20436321bb06d9f0a18141ec9dd89520ddea672adebc7cd585N.exe	98
PID 1680 wrote to memory of 4836	1680	b2f869811f352a20436321bb06d9f0a18141ec9dd89520ddea672adebc7cd585N.exe	98
PID 1680 wrote to memory of 4836	1680	b2f869811f352a20436321bb06d9f0a18141ec9dd89520ddea672adebc7cd585N.exe	98
PID 1680 wrote to memory of 4836	1680	b2f869811f352a20436321bb06d9f0a18141ec9dd89520ddea672adebc7cd585N.exe	98
PID 1680 wrote to memory of 4836	1680	b2f869811f352a20436321bb06d9f0a18141ec9dd89520ddea672adebc7cd585N.exe	98
PID 1680 wrote to memory of 4836	1680	b2f869811f352a20436321bb06d9f0a18141ec9dd89520ddea672adebc7cd585N.exe	98
PID 1680 wrote to memory of 4836	1680	b2f869811f352a20436321bb06d9f0a18141ec9dd89520ddea672adebc7cd585N.exe	98
PID 1680 wrote to memory of 4836	1680	b2f869811f352a20436321bb06d9f0a18141ec9dd89520ddea672adebc7cd585N.exe	98
PID 1680 wrote to memory of 4836	1680	b2f869811f352a20436321bb06d9f0a18141ec9dd89520ddea672adebc7cd585N.exe	98

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:3432
- C:\Users\Admin\AppData\Local\Temp\b2f869811f352a20436321bb06d9f0a18141ec9dd89520ddea672adebc7cd585N.exe
  "C:\Users\Admin\AppData\Local\Temp\b2f869811f352a20436321bb06d9f0a18141ec9dd89520ddea672adebc7cd585N.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:1680
- 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
  PID:4836

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/1680-0-0x0000000074DFE000-0x0000000074DFF000-memory.dmp

Filesize
4KB

Download
memory/1680-1-0x0000000000560000-0x000000000057E000-memory.dmp

Filesize
120KB

Download
memory/1680-2-0x0000000005310000-0x00000000058B4000-memory.dmp

Filesize
5.6MB

Download
memory/1680-3-0x0000000004E20000-0x0000000004EB2000-memory.dmp

Filesize
584KB

Download
memory/1680-4-0x0000000074DF0000-0x00000000755A0000-memory.dmp

Filesize
7.7MB

Download
memory/1680-5-0x0000000005120000-0x000000000512A000-memory.dmp

Filesize
40KB

Download
memory/1680-6-0x0000000074DFE000-0x0000000074DFF000-memory.dmp

Filesize
4KB

Download
memory/1680-7-0x0000000074DF0000-0x00000000755A0000-memory.dmp

Filesize
7.7MB

Download
memory/1680-8-0x0000000006380000-0x000000000649C000-memory.dmp

Filesize
1.1MB

Download
memory/1680-38-0x0000000006380000-0x0000000006497000-memory.dmp

Filesize
1.1MB

Download
memory/1680-40-0x0000000006380000-0x0000000006497000-memory.dmp

Filesize
1.1MB

Download
memory/1680-60-0x0000000006380000-0x0000000006497000-memory.dmp

Filesize
1.1MB

Download
memory/1680-72-0x0000000006380000-0x0000000006497000-memory.dmp

Filesize
1.1MB

Download
memory/1680-70-0x0000000006380000-0x0000000006497000-memory.dmp

Filesize
1.1MB

Download
memory/1680-68-0x0000000006380000-0x0000000006497000-memory.dmp

Filesize
1.1MB

Download
memory/1680-66-0x0000000006380000-0x0000000006497000-memory.dmp

Filesize
1.1MB

Download
memory/1680-64-0x0000000006380000-0x0000000006497000-memory.dmp

Filesize
1.1MB

Download
memory/1680-62-0x0000000006380000-0x0000000006497000-memory.dmp

Filesize
1.1MB

Download
memory/1680-59-0x0000000006380000-0x0000000006497000-memory.dmp

Filesize
1.1MB

Download
memory/1680-52-0x0000000006380000-0x0000000006497000-memory.dmp

Filesize
1.1MB

Download
memory/1680-50-0x0000000006380000-0x0000000006497000-memory.dmp

Filesize
1.1MB

Download
memory/1680-48-0x0000000006380000-0x0000000006497000-memory.dmp

Filesize
1.1MB

Download
memory/1680-46-0x0000000006380000-0x0000000006497000-memory.dmp

Filesize
1.1MB

Download
memory/1680-44-0x0000000006380000-0x0000000006497000-memory.dmp

Filesize
1.1MB

Download
memory/1680-42-0x0000000006380000-0x0000000006497000-memory.dmp

Filesize
1.1MB

Download
memory/1680-36-0x0000000006380000-0x0000000006497000-memory.dmp

Filesize
1.1MB

Download
memory/1680-34-0x0000000006380000-0x0000000006497000-memory.dmp

Filesize
1.1MB

Download
memory/1680-32-0x0000000006380000-0x0000000006497000-memory.dmp

Filesize
1.1MB

Download
memory/1680-30-0x0000000006380000-0x0000000006497000-memory.dmp

Filesize
1.1MB

Download
memory/1680-26-0x0000000006380000-0x0000000006497000-memory.dmp

Filesize
1.1MB

Download
memory/1680-20-0x0000000006380000-0x0000000006497000-memory.dmp

Filesize
1.1MB

Download
memory/1680-18-0x0000000006380000-0x0000000006497000-memory.dmp

Filesize
1.1MB

Download
memory/1680-16-0x0000000006380000-0x0000000006497000-memory.dmp

Filesize
1.1MB

Download
memory/1680-12-0x0000000006380000-0x0000000006497000-memory.dmp

Filesize
1.1MB

Download
memory/1680-56-0x0000000006380000-0x0000000006497000-memory.dmp

Filesize
1.1MB

Download
memory/1680-54-0x0000000006380000-0x0000000006497000-memory.dmp

Filesize
1.1MB

Download
memory/1680-10-0x0000000006380000-0x0000000006497000-memory.dmp

Filesize
1.1MB

Download
memory/1680-9-0x0000000006380000-0x0000000006497000-memory.dmp

Filesize
1.1MB

Download
memory/1680-1083-0x0000000074DF0000-0x00000000755A0000-memory.dmp

Filesize
7.7MB

Download
memory/1680-1084-0x0000000006550000-0x00000000065E6000-memory.dmp

Filesize
600KB

Download
memory/1680-1085-0x00000000065F0000-0x000000000663C000-memory.dmp

Filesize
304KB

Download
memory/1680-28-0x0000000006380000-0x0000000006497000-memory.dmp

Filesize
1.1MB

Download
memory/1680-24-0x0000000006380000-0x0000000006497000-memory.dmp

Filesize
1.1MB

Download
memory/1680-1089-0x0000000074DF0000-0x00000000755A0000-memory.dmp

Filesize
7.7MB

Download
memory/1680-1090-0x0000000074DF0000-0x00000000755A0000-memory.dmp

Filesize
7.7MB

Download
memory/1680-1091-0x0000000074DF0000-0x00000000755A0000-memory.dmp

Filesize
7.7MB

Download
memory/1680-22-0x0000000006380000-0x0000000006497000-memory.dmp

Filesize
1.1MB

Download
memory/1680-14-0x0000000006380000-0x0000000006497000-memory.dmp

Filesize
1.1MB

Download
memory/1680-1092-0x0000000074DF0000-0x00000000755A0000-memory.dmp

Filesize
7.7MB

Download
memory/1680-1093-0x00000000066F0000-0x0000000006744000-memory.dmp

Filesize
336KB

Download
memory/1680-1101-0x0000000074DF0000-0x00000000755A0000-memory.dmp

Filesize
7.7MB

Download
memory/4836-1099-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4836-1102-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download