remcos | 18a284f9269def1de29b66d8c26b53ea361c286cd4a2e981ea0cd53032a620a9

General

Target

18a284f9269def1de29b66d8c26b53ea361c286cd4a2e981ea0cd53032a620a9.exe
Size

2.3MB
MD5

329ae5cbe461e97d9ff4b20a0147ff55
SHA1

bf8bf68d19980d63a779c1377a96459068d2940a
SHA256

18a284f9269def1de29b66d8c26b53ea361c286cd4a2e981ea0cd53032a620a9
SHA512

68b801614d9f78ba28676a906601610d0a9d62dbd529d0567f6b0f28aa2ee7e96428009c0c925a7af13b312be7e50257da2259a0e4f8f4efbd66d526692bd9b0
SSDEEP

24576:pD39v74lfGQrFUspugRNJI2DJ53J/J/L5dJPjYF49rO/B:pp7E+QrFUBgq2m

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-1-5-21-786284298-625481688-3210388970-1000\Control Panel\International\Geo\Nation	18a284f9269def1de29b66d8c26b53ea361c286cd4a2e981ea0cd53032a620a9.exe

Executes dropped EXE 2 IoCs

pid	Process
2384	sbietrcl.exe
1720	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-1-5-21-786284298-625481688-3210388970-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Application = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Templates\\sbietrcl.exe"	18a284f9269def1de29b66d8c26b53ea361c286cd4a2e981ea0cd53032a620a9.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2384 set thread context of 1720	2384	sbietrcl.exe	88

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	18a284f9269def1de29b66d8c26b53ea361c286cd4a2e981ea0cd53032a620a9.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sbietrcl.exe

Suspicious behavior: EnumeratesProcesses 12 IoCs

pid	Process
4104	18a284f9269def1de29b66d8c26b53ea361c286cd4a2e981ea0cd53032a620a9.exe
4104	18a284f9269def1de29b66d8c26b53ea361c286cd4a2e981ea0cd53032a620a9.exe
4104	18a284f9269def1de29b66d8c26b53ea361c286cd4a2e981ea0cd53032a620a9.exe
4104	18a284f9269def1de29b66d8c26b53ea361c286cd4a2e981ea0cd53032a620a9.exe
4104	18a284f9269def1de29b66d8c26b53ea361c286cd4a2e981ea0cd53032a620a9.exe
4104	18a284f9269def1de29b66d8c26b53ea361c286cd4a2e981ea0cd53032a620a9.exe
2384	sbietrcl.exe
2384	sbietrcl.exe
2384	sbietrcl.exe
2384	sbietrcl.exe
2384	sbietrcl.exe
2384	sbietrcl.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4104	18a284f9269def1de29b66d8c26b53ea361c286cd4a2e981ea0cd53032a620a9.exe
Token: SeDebugPrivilege	2384	sbietrcl.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 4104 wrote to memory of 2384	4104	18a284f9269def1de29b66d8c26b53ea361c286cd4a2e981ea0cd53032a620a9.exe	86
PID 4104 wrote to memory of 2384	4104	18a284f9269def1de29b66d8c26b53ea361c286cd4a2e981ea0cd53032a620a9.exe	86
PID 4104 wrote to memory of 2384	4104	18a284f9269def1de29b66d8c26b53ea361c286cd4a2e981ea0cd53032a620a9.exe	86
PID 2384 wrote to memory of 1720	2384	sbietrcl.exe	88
PID 2384 wrote to memory of 1720	2384	sbietrcl.exe	88
PID 2384 wrote to memory of 1720	2384	sbietrcl.exe	88
PID 2384 wrote to memory of 1720	2384	sbietrcl.exe	88
PID 2384 wrote to memory of 1720	2384	sbietrcl.exe	88
PID 2384 wrote to memory of 1720	2384	sbietrcl.exe	88
PID 2384 wrote to memory of 1720	2384	sbietrcl.exe	88
PID 2384 wrote to memory of 1720	2384	sbietrcl.exe	88
PID 2384 wrote to memory of 1720	2384	sbietrcl.exe	88

C:\Users\Admin\AppData\Local\Temp\18a284f9269def1de29b66d8c26b53ea361c286cd4a2e981ea0cd53032a620a9.exe
"C:\Users\Admin\AppData\Local\Temp\18a284f9269def1de29b66d8c26b53ea361c286cd4a2e981ea0cd53032a620a9.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:4104
- 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:2384
- - 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:1720

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
2.3MB

MD5
22ac6e8efe1d0a6b859f6b8726514cb3

SHA1
70adfc9c7074082bcd4017414cc3a53c26937477

SHA256
9cae0885b5230f99dfffa3286329863d9aea4fdb90349fd0508865ff209b9515

SHA512
a2ce03a8d5f5ed8dbbeb497ac26abb2bd8c4ffcfabb11eb47200e701cea59a3984a0910be2e46e9d061f4e5abb1a5ee3c3f7b6288337d020815c05d03a26c74f

Download Submit
memory/1720-37-0x0000000000600000-0x0000000000617000-memory.dmp

Filesize
92KB

Download
memory/2384-41-0x0000000075350000-0x0000000075901000-memory.dmp

Filesize
5.7MB

Download
memory/2384-34-0x0000000075350000-0x0000000075901000-memory.dmp

Filesize
5.7MB

Download
memory/2384-33-0x0000000075350000-0x0000000075901000-memory.dmp

Filesize
5.7MB

Download
memory/2384-32-0x0000000075350000-0x0000000075901000-memory.dmp

Filesize
5.7MB

Download
memory/2384-31-0x0000000075350000-0x0000000075901000-memory.dmp

Filesize
5.7MB

Download
memory/4104-5-0x0000000075350000-0x0000000075901000-memory.dmp

Filesize
5.7MB

Download
memory/4104-30-0x0000000075350000-0x0000000075901000-memory.dmp

Filesize
5.7MB

Download
memory/4104-19-0x0000000075350000-0x0000000075901000-memory.dmp

Filesize
5.7MB

Download
memory/4104-18-0x0000000075352000-0x0000000075353000-memory.dmp

Filesize
4KB

Download
memory/4104-6-0x0000000075350000-0x0000000075901000-memory.dmp

Filesize
5.7MB

Download
memory/4104-0-0x0000000075352000-0x0000000075353000-memory.dmp

Filesize
4KB

Download
memory/4104-2-0x0000000075350000-0x0000000075901000-memory.dmp

Filesize
5.7MB

Download
memory/4104-1-0x0000000075350000-0x0000000075901000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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