remcos | d12fc581fb473cb6b22b253f4a26f3780063970442a18cd27a299c750ad6e221

General

Target

d12fc581fb473cb6b22b253f4a26f3780063970442a18cd27a299c750ad6e221N.exe
Size

2.0MB
MD5

a3306a8ffe614d6c05c81226e66bd7e0
SHA1

8c9d52d17df3b2556d4b4f15a191851a15afe188
SHA256

d12fc581fb473cb6b22b253f4a26f3780063970442a18cd27a299c750ad6e221
SHA512

80cbbfd7b1eb0ff09da0250a93576df301064eedad21e95074b3eb1ec0a6b968277bf93c300183844df1c873cd308e93090683261b6b443e8f0c2eb5e63cd128
SSDEEP

24576:gD39v74lfGQrFUspugRNJI2DJ53J/J/L5dJPj8/j7otSm/EVjlM:gp7E+QrFUBgq2pqM

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-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	d12fc581fb473cb6b22b253f4a26f3780063970442a18cd27a299c750ad6e221N.exe

Executes dropped EXE 2 IoCs

pid	Process
4376	sbietrcl.exe
3568	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-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Application = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Templates\\sbietrcl.exe"	d12fc581fb473cb6b22b253f4a26f3780063970442a18cd27a299c750ad6e221N.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4376 set thread context of 3568	4376	sbietrcl.exe	96

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	sbietrcl.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	d12fc581fb473cb6b22b253f4a26f3780063970442a18cd27a299c750ad6e221N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sbietrcl.exe

Suspicious behavior: EnumeratesProcesses 12 IoCs

pid	Process
2096	d12fc581fb473cb6b22b253f4a26f3780063970442a18cd27a299c750ad6e221N.exe
2096	d12fc581fb473cb6b22b253f4a26f3780063970442a18cd27a299c750ad6e221N.exe
2096	d12fc581fb473cb6b22b253f4a26f3780063970442a18cd27a299c750ad6e221N.exe
2096	d12fc581fb473cb6b22b253f4a26f3780063970442a18cd27a299c750ad6e221N.exe
2096	d12fc581fb473cb6b22b253f4a26f3780063970442a18cd27a299c750ad6e221N.exe
2096	d12fc581fb473cb6b22b253f4a26f3780063970442a18cd27a299c750ad6e221N.exe
4376	sbietrcl.exe
4376	sbietrcl.exe
4376	sbietrcl.exe
4376	sbietrcl.exe
4376	sbietrcl.exe
4376	sbietrcl.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2096	d12fc581fb473cb6b22b253f4a26f3780063970442a18cd27a299c750ad6e221N.exe
Token: SeDebugPrivilege	4376	sbietrcl.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3568	sbietrcl.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2096 wrote to memory of 4376	2096	d12fc581fb473cb6b22b253f4a26f3780063970442a18cd27a299c750ad6e221N.exe	93
PID 2096 wrote to memory of 4376	2096	d12fc581fb473cb6b22b253f4a26f3780063970442a18cd27a299c750ad6e221N.exe	93
PID 2096 wrote to memory of 4376	2096	d12fc581fb473cb6b22b253f4a26f3780063970442a18cd27a299c750ad6e221N.exe	93
PID 4376 wrote to memory of 3568	4376	sbietrcl.exe	96
PID 4376 wrote to memory of 3568	4376	sbietrcl.exe	96
PID 4376 wrote to memory of 3568	4376	sbietrcl.exe	96
PID 4376 wrote to memory of 3568	4376	sbietrcl.exe	96
PID 4376 wrote to memory of 3568	4376	sbietrcl.exe	96
PID 4376 wrote to memory of 3568	4376	sbietrcl.exe	96
PID 4376 wrote to memory of 3568	4376	sbietrcl.exe	96
PID 4376 wrote to memory of 3568	4376	sbietrcl.exe	96
PID 4376 wrote to memory of 3568	4376	sbietrcl.exe	96

C:\Users\Admin\AppData\Local\Temp\d12fc581fb473cb6b22b253f4a26f3780063970442a18cd27a299c750ad6e221N.exe
"C:\Users\Admin\AppData\Local\Temp\d12fc581fb473cb6b22b253f4a26f3780063970442a18cd27a299c750ad6e221N.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:2096
- 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:4376
- - 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:3568

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
2.0MB

MD5
598f3bced14eb7c80949c22fb96bb706

SHA1
193aebaa48e43c11255551e9770e8ca2c1774fdf

SHA256
08b6240605812e21b259407f24f7bf03982e34379ea8657fe52a89e240a8c3dc

SHA512
d67889dadd1e9b29913ab9388586700a434625cb20ecb3f8f51e89558c8ae16f8d93505a6a91b3f49abaa8da5795278425dd5e346892f9fb84f01dbaffd192b3

Download Submit
memory/2096-30-0x0000000074A50000-0x0000000075001000-memory.dmp

Filesize
5.7MB

Download
memory/2096-1-0x0000000074A50000-0x0000000075001000-memory.dmp

Filesize
5.7MB

Download
memory/2096-2-0x0000000074A50000-0x0000000075001000-memory.dmp

Filesize
5.7MB

Download
memory/2096-5-0x0000000074A50000-0x0000000075001000-memory.dmp

Filesize
5.7MB

Download
memory/2096-6-0x0000000074A50000-0x0000000075001000-memory.dmp

Filesize
5.7MB

Download
memory/2096-18-0x0000000074A52000-0x0000000074A53000-memory.dmp

Filesize
4KB

Download
memory/2096-19-0x0000000074A50000-0x0000000075001000-memory.dmp

Filesize
5.7MB

Download
memory/2096-0-0x0000000074A52000-0x0000000074A53000-memory.dmp

Filesize
4KB

Download
memory/3568-42-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/3568-35-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/3568-38-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/3568-45-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/3568-43-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/3568-39-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/3568-49-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/4376-32-0x0000000074A50000-0x0000000075001000-memory.dmp

Filesize
5.7MB

Download
memory/4376-33-0x0000000074A50000-0x0000000075001000-memory.dmp

Filesize
5.7MB

Download
memory/4376-34-0x0000000074A50000-0x0000000075001000-memory.dmp

Filesize
5.7MB

Download
memory/4376-31-0x0000000074A50000-0x0000000075001000-memory.dmp

Filesize
5.7MB

Download
memory/4376-46-0x0000000074A50000-0x0000000075001000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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