remcos | dfc6da93f93521375a1c87f8a99b069c4440939f93d7bf90cf30c140eec0df4b

General

Target

dfc6da93f93521375a1c87f8a99b069c4440939f93d7bf90cf30c140eec0df4bN.exe
Size

903KB
MD5

48bd99be6b0f63e8f6cb8222275f6080
SHA1

3f2a535aff3d26f6bb3bd799a8f5a8dbcd286458
SHA256

dfc6da93f93521375a1c87f8a99b069c4440939f93d7bf90cf30c140eec0df4b
SHA512

4e369a68cfe44c019b19f35914b51d857a8eb33a974475b45b5604124924780f94feb0fb70ea83a1f2393d66fd24ff4e4a2e8ec5dad68d5c268873c943694b4f
SSDEEP

12288:tp+rgRNyA55IxJ+feDOa9rZj5XqkJD0QrOod7XxlW91RRz9MH:tpugRNJI1D39dlfGQrFUx9MH

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
Remcos family
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-1-5-21-1062200478-553497403-3857448183-1000\Control Panel\International\Geo\Nation	dfc6da93f93521375a1c87f8a99b069c4440939f93d7bf90cf30c140eec0df4bN.exe

Executes dropped EXE 2 IoCs

pid	Process
3576	sbietrcl.exe
3528	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-1-5-21-1062200478-553497403-3857448183-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Application = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Templates\\sbietrcl.exe"	dfc6da93f93521375a1c87f8a99b069c4440939f93d7bf90cf30c140eec0df4bN.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3576 set thread context of 3528	3576	sbietrcl.exe	102

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	sbietrcl.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	dfc6da93f93521375a1c87f8a99b069c4440939f93d7bf90cf30c140eec0df4bN.exe

Suspicious behavior: EnumeratesProcesses 12 IoCs

pid	Process
4224	dfc6da93f93521375a1c87f8a99b069c4440939f93d7bf90cf30c140eec0df4bN.exe
4224	dfc6da93f93521375a1c87f8a99b069c4440939f93d7bf90cf30c140eec0df4bN.exe
4224	dfc6da93f93521375a1c87f8a99b069c4440939f93d7bf90cf30c140eec0df4bN.exe
4224	dfc6da93f93521375a1c87f8a99b069c4440939f93d7bf90cf30c140eec0df4bN.exe
4224	dfc6da93f93521375a1c87f8a99b069c4440939f93d7bf90cf30c140eec0df4bN.exe
4224	dfc6da93f93521375a1c87f8a99b069c4440939f93d7bf90cf30c140eec0df4bN.exe
3576	sbietrcl.exe
3576	sbietrcl.exe
3576	sbietrcl.exe
3576	sbietrcl.exe
3576	sbietrcl.exe
3576	sbietrcl.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4224	dfc6da93f93521375a1c87f8a99b069c4440939f93d7bf90cf30c140eec0df4bN.exe
Token: SeDebugPrivilege	3576	sbietrcl.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 4224 wrote to memory of 3576	4224	dfc6da93f93521375a1c87f8a99b069c4440939f93d7bf90cf30c140eec0df4bN.exe	100
PID 4224 wrote to memory of 3576	4224	dfc6da93f93521375a1c87f8a99b069c4440939f93d7bf90cf30c140eec0df4bN.exe	100
PID 4224 wrote to memory of 3576	4224	dfc6da93f93521375a1c87f8a99b069c4440939f93d7bf90cf30c140eec0df4bN.exe	100
PID 3576 wrote to memory of 3528	3576	sbietrcl.exe	102
PID 3576 wrote to memory of 3528	3576	sbietrcl.exe	102
PID 3576 wrote to memory of 3528	3576	sbietrcl.exe	102
PID 3576 wrote to memory of 3528	3576	sbietrcl.exe	102
PID 3576 wrote to memory of 3528	3576	sbietrcl.exe	102
PID 3576 wrote to memory of 3528	3576	sbietrcl.exe	102
PID 3576 wrote to memory of 3528	3576	sbietrcl.exe	102
PID 3576 wrote to memory of 3528	3576	sbietrcl.exe	102
PID 3576 wrote to memory of 3528	3576	sbietrcl.exe	102

C:\Users\Admin\AppData\Local\Temp\dfc6da93f93521375a1c87f8a99b069c4440939f93d7bf90cf30c140eec0df4bN.exe
"C:\Users\Admin\AppData\Local\Temp\dfc6da93f93521375a1c87f8a99b069c4440939f93d7bf90cf30c140eec0df4bN.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:4224
- 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:3576
- - 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:3528

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

Replay Monitor

Loading Replay Monitor...

Downloads

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

Filesize
912KB

MD5
5062ba4b771ca2ebcabce468beb2b385

SHA1
702b98968b78e812c4c7cbd0cedebc01f97b2998

SHA256
2f142151e5eb2b715f097eb145936b4b390f0e9c2c71363a8120b38f33420a5c

SHA512
ee25a17751f9bc8ce8899c0eef2b7c886d50a55f3a917723088dc4e6259f99552199b029ab52fa7e18d7dc466f8229746c2b69d39aea47c6daec5fe0f9bc1997

Download Submit
memory/3528-37-0x0000000000600000-0x0000000000617000-memory.dmp

Filesize
92KB

Download
memory/3576-41-0x0000000074CE0000-0x0000000075291000-memory.dmp

Filesize
5.7MB

Download
memory/3576-34-0x0000000074CE0000-0x0000000075291000-memory.dmp

Filesize
5.7MB

Download
memory/3576-33-0x0000000074CE0000-0x0000000075291000-memory.dmp

Filesize
5.7MB

Download
memory/3576-31-0x0000000074CE0000-0x0000000075291000-memory.dmp

Filesize
5.7MB

Download
memory/3576-32-0x0000000074CE0000-0x0000000075291000-memory.dmp

Filesize
5.7MB

Download
memory/4224-5-0x0000000074CE0000-0x0000000075291000-memory.dmp

Filesize
5.7MB

Download
memory/4224-30-0x0000000074CE0000-0x0000000075291000-memory.dmp

Filesize
5.7MB

Download
memory/4224-19-0x0000000074CE0000-0x0000000075291000-memory.dmp

Filesize
5.7MB

Download
memory/4224-18-0x0000000074CE2000-0x0000000074CE3000-memory.dmp

Filesize
4KB

Download
memory/4224-6-0x0000000074CE0000-0x0000000075291000-memory.dmp

Filesize
5.7MB

Download
memory/4224-0-0x0000000074CE2000-0x0000000074CE3000-memory.dmp

Filesize
4KB

Download
memory/4224-2-0x0000000074CE0000-0x0000000075291000-memory.dmp

Filesize
5.7MB

Download
memory/4224-1-0x0000000074CE0000-0x0000000075291000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads