remcos | 20a10b7df467ee6948a1f4b666ce8ba0b33eb4a81c9f67912ac7683df353c891

General

Target

20a10b7df467ee6948a1f4b666ce8ba0b33eb4a81c9f67912ac7683df353c891N.exe
Size

1.4MB
MD5

b4d397caac0e0dec84407be95e107290
SHA1

abf8c56d5027eb924806157fd747682e717aba3a
SHA256

20a10b7df467ee6948a1f4b666ce8ba0b33eb4a81c9f67912ac7683df353c891
SHA512

6d044830436b82ec05db6cdb5e54c64ec77d6bd531334610ecb28541e05cf5ce8e8aca1cb992a2d8864a0270ff327566a3154eac0f132c8157c9982bd80ed152
SSDEEP

24576:SD39v74lfGQrFUspugRNJI2DJ53J/J/L5dJPjo/e3j:Sp7E+QrFUBgq2/3j

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-1-5-21-523280732-2327480845-3730041215-1000\Control Panel\International\Geo\Nation	20a10b7df467ee6948a1f4b666ce8ba0b33eb4a81c9f67912ac7683df353c891N.exe

Executes dropped EXE 2 IoCs

pid	Process
208	sbietrcl.exe
4560	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-1-5-21-523280732-2327480845-3730041215-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Application = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Templates\\sbietrcl.exe"	20a10b7df467ee6948a1f4b666ce8ba0b33eb4a81c9f67912ac7683df353c891N.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 208 set thread context of 4560	208	sbietrcl.exe	83

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	20a10b7df467ee6948a1f4b666ce8ba0b33eb4a81c9f67912ac7683df353c891N.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
1752	20a10b7df467ee6948a1f4b666ce8ba0b33eb4a81c9f67912ac7683df353c891N.exe
1752	20a10b7df467ee6948a1f4b666ce8ba0b33eb4a81c9f67912ac7683df353c891N.exe
1752	20a10b7df467ee6948a1f4b666ce8ba0b33eb4a81c9f67912ac7683df353c891N.exe
1752	20a10b7df467ee6948a1f4b666ce8ba0b33eb4a81c9f67912ac7683df353c891N.exe
1752	20a10b7df467ee6948a1f4b666ce8ba0b33eb4a81c9f67912ac7683df353c891N.exe
1752	20a10b7df467ee6948a1f4b666ce8ba0b33eb4a81c9f67912ac7683df353c891N.exe
208	sbietrcl.exe
208	sbietrcl.exe
208	sbietrcl.exe
208	sbietrcl.exe
208	sbietrcl.exe
208	sbietrcl.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1752	20a10b7df467ee6948a1f4b666ce8ba0b33eb4a81c9f67912ac7683df353c891N.exe
Token: SeDebugPrivilege	208	sbietrcl.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4560	sbietrcl.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1752 wrote to memory of 208	1752	20a10b7df467ee6948a1f4b666ce8ba0b33eb4a81c9f67912ac7683df353c891N.exe	82
PID 1752 wrote to memory of 208	1752	20a10b7df467ee6948a1f4b666ce8ba0b33eb4a81c9f67912ac7683df353c891N.exe	82
PID 1752 wrote to memory of 208	1752	20a10b7df467ee6948a1f4b666ce8ba0b33eb4a81c9f67912ac7683df353c891N.exe	82
PID 208 wrote to memory of 4560	208	sbietrcl.exe	83
PID 208 wrote to memory of 4560	208	sbietrcl.exe	83
PID 208 wrote to memory of 4560	208	sbietrcl.exe	83
PID 208 wrote to memory of 4560	208	sbietrcl.exe	83
PID 208 wrote to memory of 4560	208	sbietrcl.exe	83
PID 208 wrote to memory of 4560	208	sbietrcl.exe	83
PID 208 wrote to memory of 4560	208	sbietrcl.exe	83
PID 208 wrote to memory of 4560	208	sbietrcl.exe	83
PID 208 wrote to memory of 4560	208	sbietrcl.exe	83

C:\Users\Admin\AppData\Local\Temp\20a10b7df467ee6948a1f4b666ce8ba0b33eb4a81c9f67912ac7683df353c891N.exe
"C:\Users\Admin\AppData\Local\Temp\20a10b7df467ee6948a1f4b666ce8ba0b33eb4a81c9f67912ac7683df353c891N.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:1752
- 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:208
- - 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:4560

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

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Downloads

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

Filesize
1.4MB

MD5
2579450389228fb1005004a4ad90bea9

SHA1
7a8e0f9bbedbdb5e3c740a4c9c6e469abe21a1fe

SHA256
6c3c08c049782400b89e81d47a55dd649796e71993088874eb3f23838e08b7f9

SHA512
a49ccd10851db2640e2758e6a7eeff932703a6aa4eebf1ff559785975bb6f6dba0f9035bf9e6e7db358d65c04d30e72f740e30de41b39ed1339f983fee833c3a

Download Submit
memory/208-46-0x0000000074FF0000-0x00000000755A1000-memory.dmp

Filesize
5.7MB

Download
memory/208-34-0x0000000074FF0000-0x00000000755A1000-memory.dmp

Filesize
5.7MB

Download
memory/208-33-0x0000000074FF0000-0x00000000755A1000-memory.dmp

Filesize
5.7MB

Download
memory/208-32-0x0000000074FF0000-0x00000000755A1000-memory.dmp

Filesize
5.7MB

Download
memory/208-30-0x0000000074FF0000-0x00000000755A1000-memory.dmp

Filesize
5.7MB

Download
memory/1752-18-0x0000000074FF2000-0x0000000074FF3000-memory.dmp

Filesize
4KB

Download
memory/1752-1-0x0000000074FF0000-0x00000000755A1000-memory.dmp

Filesize
5.7MB

Download
memory/1752-31-0x0000000074FF0000-0x00000000755A1000-memory.dmp

Filesize
5.7MB

Download
memory/1752-0-0x0000000074FF2000-0x0000000074FF3000-memory.dmp

Filesize
4KB

Download
memory/1752-6-0x0000000074FF0000-0x00000000755A1000-memory.dmp

Filesize
5.7MB

Download
memory/1752-5-0x0000000074FF0000-0x00000000755A1000-memory.dmp

Filesize
5.7MB

Download
memory/1752-2-0x0000000074FF0000-0x00000000755A1000-memory.dmp

Filesize
5.7MB

Download
memory/1752-19-0x0000000074FF0000-0x00000000755A1000-memory.dmp

Filesize
5.7MB

Download
memory/4560-35-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/4560-43-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/4560-42-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/4560-39-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/4560-38-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/4560-45-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/4560-49-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads