remcos | 1986c21a4664201520f6291ae33387d02b66dda7a330464e58c2d30a19b7e811

General

Target

1986c21a4664201520f6291ae33387d02b66dda7a330464e58c2d30a19b7e811N.exe
Size

2.2MB
MD5

c995b824e5d80d6a9e945ac84177a220
SHA1

3fdca4ad9dde7ca7530ed248663d5aa77750df7e
SHA256

1986c21a4664201520f6291ae33387d02b66dda7a330464e58c2d30a19b7e811
SHA512

bfaa72218ccf057f983e3654abf5d27fe8bfc717a7e194ea898f2b86d817253cc6d33fe87dee208d39c58ef0853202b46885e09ca05bed7d66b225b3934bb174
SSDEEP

24576:gD39v74lfGQrFUspugRNJI2DJ53J/J/L5dJPjYF4avnXJJJ9:gp7E+QrFUBgq2Snv

Score

10^/10

remcos host discovery persistence rat spyware stealer

Malware Config

Extracted

Family

remcos

Version

1.7 Pro

Botnet

Host

C2

213.183.58.19:4000

Attributes

audio_folder
audio
audio_path
%AppData%
audio_record_time
5
connect_delay
0
connect_interval
5
copy_file
remcos.exe
copy_folder
remcos
delete_file
false
hide_file
false
hide_keylog_file
true
install_flag
false
install_path
%AppData%
keylog_crypt
true
keylog_file
read.dat
keylog_flag
false
keylog_folder
CastC
keylog_path
%AppData%
mouse_option
false
mutex
remcos_sccafsoidz
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screens
screenshot_path
%AppData%
screenshot_time
1
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

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-355097885-2402257403-2971294179-1000\Control Panel\International\Geo\Nation	1986c21a4664201520f6291ae33387d02b66dda7a330464e58c2d30a19b7e811N.exe

Executes dropped EXE 2 IoCs

pid	Process
4736	sbietrcl.exe
4696	sbietrcl.exe

Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Credentials from Web Browsers
T1555.003

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-1-5-21-355097885-2402257403-2971294179-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Application = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Templates\\sbietrcl.exe"	1986c21a4664201520f6291ae33387d02b66dda7a330464e58c2d30a19b7e811N.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4736 set thread context of 4696	4736	sbietrcl.exe	87

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 3 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	1986c21a4664201520f6291ae33387d02b66dda7a330464e58c2d30a19b7e811N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sbietrcl.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sbietrcl.exe

Suspicious behavior: EnumeratesProcesses 12 IoCs

pid	Process
1536	1986c21a4664201520f6291ae33387d02b66dda7a330464e58c2d30a19b7e811N.exe
1536	1986c21a4664201520f6291ae33387d02b66dda7a330464e58c2d30a19b7e811N.exe
1536	1986c21a4664201520f6291ae33387d02b66dda7a330464e58c2d30a19b7e811N.exe
1536	1986c21a4664201520f6291ae33387d02b66dda7a330464e58c2d30a19b7e811N.exe
1536	1986c21a4664201520f6291ae33387d02b66dda7a330464e58c2d30a19b7e811N.exe
1536	1986c21a4664201520f6291ae33387d02b66dda7a330464e58c2d30a19b7e811N.exe
4736	sbietrcl.exe
4736	sbietrcl.exe
4736	sbietrcl.exe
4736	sbietrcl.exe
4736	sbietrcl.exe
4736	sbietrcl.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1536	1986c21a4664201520f6291ae33387d02b66dda7a330464e58c2d30a19b7e811N.exe
Token: SeDebugPrivilege	4736	sbietrcl.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4696	sbietrcl.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1536 wrote to memory of 4736	1536	1986c21a4664201520f6291ae33387d02b66dda7a330464e58c2d30a19b7e811N.exe	85
PID 1536 wrote to memory of 4736	1536	1986c21a4664201520f6291ae33387d02b66dda7a330464e58c2d30a19b7e811N.exe	85
PID 1536 wrote to memory of 4736	1536	1986c21a4664201520f6291ae33387d02b66dda7a330464e58c2d30a19b7e811N.exe	85
PID 4736 wrote to memory of 4696	4736	sbietrcl.exe	87
PID 4736 wrote to memory of 4696	4736	sbietrcl.exe	87
PID 4736 wrote to memory of 4696	4736	sbietrcl.exe	87
PID 4736 wrote to memory of 4696	4736	sbietrcl.exe	87
PID 4736 wrote to memory of 4696	4736	sbietrcl.exe	87
PID 4736 wrote to memory of 4696	4736	sbietrcl.exe	87
PID 4736 wrote to memory of 4696	4736	sbietrcl.exe	87
PID 4736 wrote to memory of 4696	4736	sbietrcl.exe	87
PID 4736 wrote to memory of 4696	4736	sbietrcl.exe	87

C:\Users\Admin\AppData\Local\Temp\1986c21a4664201520f6291ae33387d02b66dda7a330464e58c2d30a19b7e811N.exe
"C:\Users\Admin\AppData\Local\Temp\1986c21a4664201520f6291ae33387d02b66dda7a330464e58c2d30a19b7e811N.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1536
- C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\sbietrcl.exe
  "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\sbietrcl.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4736
- - C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\sbietrcl.exe
    "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\sbietrcl.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    PID:4696

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\sbietrcl.exe

Filesize
2.2MB

MD5
9c2442e272605d7f3f9c0cb762c249aa

SHA1
f6a70a46b11227dde59c212128d09ea94bb40947

SHA256
6b0c278f73a01ce8709b29062c3fe2caed672f4c846e2dcd5a4319bb8e810240

SHA512
e01c4a040c990d8112c2723e2865bc93f1f26785ae5604d2f1a1c72dae5faf7e70f0696ae169a003472601bd11ba557f3a9ddd46c3cb4665664bd36bbd7abebf

Download Submit
memory/1536-0-0x0000000074DB2000-0x0000000074DB3000-memory.dmp

Filesize
4KB

Download
memory/1536-1-0x0000000074DB0000-0x0000000075361000-memory.dmp

Filesize
5.7MB

Download
memory/1536-2-0x0000000074DB0000-0x0000000075361000-memory.dmp

Filesize
5.7MB

Download
memory/1536-5-0x0000000074DB0000-0x0000000075361000-memory.dmp

Filesize
5.7MB

Download
memory/1536-6-0x0000000074DB0000-0x0000000075361000-memory.dmp

Filesize
5.7MB

Download
memory/1536-18-0x0000000074DB2000-0x0000000074DB3000-memory.dmp

Filesize
4KB

Download
memory/1536-19-0x0000000074DB0000-0x0000000075361000-memory.dmp

Filesize
5.7MB

Download
memory/1536-30-0x0000000074DB0000-0x0000000075361000-memory.dmp

Filesize
5.7MB

Download
memory/4696-40-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/4696-35-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/4696-38-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/4696-43-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/4696-45-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/4696-44-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/4696-49-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/4736-32-0x0000000074DB0000-0x0000000075361000-memory.dmp

Filesize
5.7MB

Download
memory/4736-33-0x0000000074DB0000-0x0000000075361000-memory.dmp

Filesize
5.7MB

Download
memory/4736-34-0x0000000074DB0000-0x0000000075361000-memory.dmp

Filesize
5.7MB

Download
memory/4736-31-0x0000000074DB0000-0x0000000075361000-memory.dmp

Filesize
5.7MB

Download
memory/4736-46-0x0000000074DB0000-0x0000000075361000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads