remcos | 2833c6001e4a986864905132528cb8a021b3d49413b6a1305074e3106fe83b7e

General

Target

2833c6001e4a986864905132528cb8a021b3d49413b6a1305074e3106fe83b7eN.exe
Size

2.3MB
MD5

db2560e13f011b4c558289a05713b340
SHA1

26e642b39e4531a9106704bfc0e0d28acb995305
SHA256

2833c6001e4a986864905132528cb8a021b3d49413b6a1305074e3106fe83b7e
SHA512

1716f0c46ec23c78b24239d0ed9d6453848df33b21a210f5439cfa101b3c9ce221bc72312c9ac2bf6df13c76648ac38b24ff8d0dcbc11092f9dab6ef8e4ac5cc
SSDEEP

24576:HD39v74lfGQrFUspugRNJI2DJ53J/J/L5dJPjYF4avnXJJJlnp:Hp7E+QrFUBgq2SnDnp

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-1-5-21-945322488-2060912225-3527527000-1000\Control Panel\International\Geo\Nation	2833c6001e4a986864905132528cb8a021b3d49413b6a1305074e3106fe83b7eN.exe

Executes dropped EXE 2 IoCs

pid	Process
3788	sbietrcl.exe
3884	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-1-5-21-945322488-2060912225-3527527000-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Application = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Templates\\sbietrcl.exe"	2833c6001e4a986864905132528cb8a021b3d49413b6a1305074e3106fe83b7eN.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3788 set thread context of 3884	3788	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	sbietrcl.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sbietrcl.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2833c6001e4a986864905132528cb8a021b3d49413b6a1305074e3106fe83b7eN.exe

Suspicious behavior: EnumeratesProcesses 12 IoCs

pid	Process
1556	2833c6001e4a986864905132528cb8a021b3d49413b6a1305074e3106fe83b7eN.exe
1556	2833c6001e4a986864905132528cb8a021b3d49413b6a1305074e3106fe83b7eN.exe
1556	2833c6001e4a986864905132528cb8a021b3d49413b6a1305074e3106fe83b7eN.exe
1556	2833c6001e4a986864905132528cb8a021b3d49413b6a1305074e3106fe83b7eN.exe
1556	2833c6001e4a986864905132528cb8a021b3d49413b6a1305074e3106fe83b7eN.exe
1556	2833c6001e4a986864905132528cb8a021b3d49413b6a1305074e3106fe83b7eN.exe
3788	sbietrcl.exe
3788	sbietrcl.exe
3788	sbietrcl.exe
3788	sbietrcl.exe
3788	sbietrcl.exe
3788	sbietrcl.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1556	2833c6001e4a986864905132528cb8a021b3d49413b6a1305074e3106fe83b7eN.exe
Token: SeDebugPrivilege	3788	sbietrcl.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3884	sbietrcl.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1556 wrote to memory of 3788	1556	2833c6001e4a986864905132528cb8a021b3d49413b6a1305074e3106fe83b7eN.exe	84
PID 1556 wrote to memory of 3788	1556	2833c6001e4a986864905132528cb8a021b3d49413b6a1305074e3106fe83b7eN.exe	84
PID 1556 wrote to memory of 3788	1556	2833c6001e4a986864905132528cb8a021b3d49413b6a1305074e3106fe83b7eN.exe	84
PID 3788 wrote to memory of 3884	3788	sbietrcl.exe	87
PID 3788 wrote to memory of 3884	3788	sbietrcl.exe	87
PID 3788 wrote to memory of 3884	3788	sbietrcl.exe	87
PID 3788 wrote to memory of 3884	3788	sbietrcl.exe	87
PID 3788 wrote to memory of 3884	3788	sbietrcl.exe	87
PID 3788 wrote to memory of 3884	3788	sbietrcl.exe	87
PID 3788 wrote to memory of 3884	3788	sbietrcl.exe	87
PID 3788 wrote to memory of 3884	3788	sbietrcl.exe	87
PID 3788 wrote to memory of 3884	3788	sbietrcl.exe	87

C:\Users\Admin\AppData\Local\Temp\2833c6001e4a986864905132528cb8a021b3d49413b6a1305074e3106fe83b7eN.exe
"C:\Users\Admin\AppData\Local\Temp\2833c6001e4a986864905132528cb8a021b3d49413b6a1305074e3106fe83b7eN.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:1556
- 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:3788
- - 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:3884

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
2.3MB

MD5
b27957918ad38e86a6e11e9197fede49

SHA1
27c16ba57ef3af06c8cf452cb1e569343fb43779

SHA256
e23d71b3adaa87fafe8620f6ea2fb80f84fd85c7a818f74956cb8c321e7312f3

SHA512
71131d4124c9e309f7d9cb4187968b2ddf73e80cf13ab71ca8ad2ddcf742ae77c49499d340d5f94cf773f07e44a2f4306271db115f9a9d240919c7bf0e82768b

Download Submit
memory/1556-0-0x00000000747C2000-0x00000000747C3000-memory.dmp

Filesize
4KB

Download
memory/1556-1-0x00000000747C0000-0x0000000074D71000-memory.dmp

Filesize
5.7MB

Download
memory/1556-2-0x00000000747C0000-0x0000000074D71000-memory.dmp

Filesize
5.7MB

Download
memory/1556-5-0x00000000747C0000-0x0000000074D71000-memory.dmp

Filesize
5.7MB

Download
memory/1556-6-0x00000000747C0000-0x0000000074D71000-memory.dmp

Filesize
5.7MB

Download
memory/1556-18-0x00000000747C2000-0x00000000747C3000-memory.dmp

Filesize
4KB

Download
memory/1556-19-0x00000000747C0000-0x0000000074D71000-memory.dmp

Filesize
5.7MB

Download
memory/1556-30-0x00000000747C0000-0x0000000074D71000-memory.dmp

Filesize
5.7MB

Download
memory/3788-32-0x00000000747C0000-0x0000000074D71000-memory.dmp

Filesize
5.7MB

Download
memory/3788-31-0x00000000747C0000-0x0000000074D71000-memory.dmp

Filesize
5.7MB

Download
memory/3788-33-0x00000000747C0000-0x0000000074D71000-memory.dmp

Filesize
5.7MB

Download
memory/3788-34-0x00000000747C0000-0x0000000074D71000-memory.dmp

Filesize
5.7MB

Download
memory/3788-46-0x00000000747C0000-0x0000000074D71000-memory.dmp

Filesize
5.7MB

Download
memory/3884-35-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/3884-38-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/3884-44-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/3884-43-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/3884-41-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/3884-45-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/3884-49-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads