remcos | ea15b09762985bc16b997558583acb28d9fd9e86eb95b2df204956211ec541d7

General

Target

d0b9e457b2d16d654f95b599d86da4c0N.exe
Size

1.5MB
MD5

d0b9e457b2d16d654f95b599d86da4c0
SHA1

84b6f6e4f1d9e859ac733e37051f3f6c7e276c76
SHA256

ea15b09762985bc16b997558583acb28d9fd9e86eb95b2df204956211ec541d7
SHA512

2c08ee289fab2d9cd1e0e42202f6f80ba347d70a7bcd4c05578daacc22526dc201cfa554c8410337f1d83fb7c820d7ef7331038b2bbcd34345857f3415fe7971
SSDEEP

24576:ED39v74lfGQrFUspugRNJI2DJ53J/J/L5dJPjouO:Ep7E+QrFUBgq2e

Score

10^/10

remcos host discovery persistence rat

Malware Config

Extracted

Family

remcos

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	d0b9e457b2d16d654f95b599d86da4c0N.exe

Executes dropped EXE 2 IoCs

pid	Process
1020	sbietrcl.exe
2604	sbietrcl.exe

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"	d0b9e457b2d16d654f95b599d86da4c0N.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1020 set thread context of 2604	1020	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 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	d0b9e457b2d16d654f95b599d86da4c0N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sbietrcl.exe

Suspicious behavior: EnumeratesProcesses 12 IoCs

pid	Process
3004	d0b9e457b2d16d654f95b599d86da4c0N.exe
3004	d0b9e457b2d16d654f95b599d86da4c0N.exe
3004	d0b9e457b2d16d654f95b599d86da4c0N.exe
3004	d0b9e457b2d16d654f95b599d86da4c0N.exe
3004	d0b9e457b2d16d654f95b599d86da4c0N.exe
3004	d0b9e457b2d16d654f95b599d86da4c0N.exe
1020	sbietrcl.exe
1020	sbietrcl.exe
1020	sbietrcl.exe
1020	sbietrcl.exe
1020	sbietrcl.exe
1020	sbietrcl.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3004	d0b9e457b2d16d654f95b599d86da4c0N.exe
Token: SeDebugPrivilege	1020	sbietrcl.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 3004 wrote to memory of 1020	3004	d0b9e457b2d16d654f95b599d86da4c0N.exe	93
PID 3004 wrote to memory of 1020	3004	d0b9e457b2d16d654f95b599d86da4c0N.exe	93
PID 3004 wrote to memory of 1020	3004	d0b9e457b2d16d654f95b599d86da4c0N.exe	93
PID 1020 wrote to memory of 2604	1020	sbietrcl.exe	96
PID 1020 wrote to memory of 2604	1020	sbietrcl.exe	96
PID 1020 wrote to memory of 2604	1020	sbietrcl.exe	96
PID 1020 wrote to memory of 2604	1020	sbietrcl.exe	96
PID 1020 wrote to memory of 2604	1020	sbietrcl.exe	96
PID 1020 wrote to memory of 2604	1020	sbietrcl.exe	96
PID 1020 wrote to memory of 2604	1020	sbietrcl.exe	96
PID 1020 wrote to memory of 2604	1020	sbietrcl.exe	96
PID 1020 wrote to memory of 2604	1020	sbietrcl.exe	96

C:\Users\Admin\AppData\Local\Temp\d0b9e457b2d16d654f95b599d86da4c0N.exe
"C:\Users\Admin\AppData\Local\Temp\d0b9e457b2d16d654f95b599d86da4c0N.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:3004
- 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:1020
- - C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\sbietrcl.exe
    "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\sbietrcl.exe"
    3⤵
    - Executes dropped EXE
    PID:2604

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

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
1.5MB

MD5
11580eab18adfa5681efb7bf6d4ffd44

SHA1
4f69712204b8740021233768bb8107131cae6013

SHA256
4ffcbaffbe6ec348377981b71b459443ea8ae6cd5fecf2e3e00c071af8a7b7ab

SHA512
02f12090a3a19481344fd6deab92c1378fb270a576f8adf33bdbac2816d24e2c8c1fe2e15c83823afb196414e10aef217a51347b3354fb7b842e46b903ab0e59

Download Submit
memory/1020-30-0x0000000074A80000-0x0000000075031000-memory.dmp

Filesize
5.7MB

Download
memory/1020-34-0x0000000074A80000-0x0000000075031000-memory.dmp

Filesize
5.7MB

Download
memory/1020-41-0x0000000074A80000-0x0000000075031000-memory.dmp

Filesize
5.7MB

Download
memory/1020-33-0x0000000074A80000-0x0000000075031000-memory.dmp

Filesize
5.7MB

Download
memory/1020-32-0x0000000074A80000-0x0000000075031000-memory.dmp

Filesize
5.7MB

Download
memory/1020-31-0x0000000074A80000-0x0000000075031000-memory.dmp

Filesize
5.7MB

Download
memory/2604-37-0x0000000000360000-0x0000000000377000-memory.dmp

Filesize
92KB

Download
memory/3004-28-0x0000000074A80000-0x0000000075031000-memory.dmp

Filesize
5.7MB

Download
memory/3004-1-0x0000000074A80000-0x0000000075031000-memory.dmp

Filesize
5.7MB

Download
memory/3004-0-0x0000000074A82000-0x0000000074A83000-memory.dmp

Filesize
4KB

Download
memory/3004-18-0x0000000074A80000-0x0000000075031000-memory.dmp

Filesize
5.7MB

Download
memory/3004-2-0x0000000074A80000-0x0000000075031000-memory.dmp

Filesize
5.7MB

Download
memory/3004-17-0x0000000074A82000-0x0000000074A83000-memory.dmp

Filesize
4KB

Download
memory/3004-5-0x0000000074A80000-0x0000000075031000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads