remcos | e20f061f25b4b7b804c8998e801a92a85ff57611552c90a17447bc39beefb7c3

General

Target

e20f061f25b4b7b804c8998e801a92a85ff57611552c90a17447bc39beefb7c3.exe
Size

2.2MB
MD5

c895eb1282bc7c88ef96596f0c80e3f4
SHA1

08f146b5afafed246c2ec102e35d3367c557ae32
SHA256

e20f061f25b4b7b804c8998e801a92a85ff57611552c90a17447bc39beefb7c3
SHA512

2403f7b1da540b5fbaf2d0a67cf9ef2f5e4d75eeb84473545c05818fe4f6896b8ec28222df4009167990cfb9d57fc0169deb65d755bf5f0bf24c19e2580d443a
SSDEEP

24576:pD39v74lfGQrFUspugRNJI2DJ53J/J/L5dJPjYF4avnXJJPwx2:pp7E+QrFUBgq2SnL

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-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation	e20f061f25b4b7b804c8998e801a92a85ff57611552c90a17447bc39beefb7c3.exe

Executes dropped EXE 2 IoCs

pid	Process
64	sbietrcl.exe
4260	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-1-5-21-493223053-2004649691-1575712786-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Application = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Templates\\sbietrcl.exe"	e20f061f25b4b7b804c8998e801a92a85ff57611552c90a17447bc39beefb7c3.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 64 set thread context of 4260	64	sbietrcl.exe	85

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	e20f061f25b4b7b804c8998e801a92a85ff57611552c90a17447bc39beefb7c3.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sbietrcl.exe

Suspicious behavior: EnumeratesProcesses 12 IoCs

pid	Process
2588	e20f061f25b4b7b804c8998e801a92a85ff57611552c90a17447bc39beefb7c3.exe
2588	e20f061f25b4b7b804c8998e801a92a85ff57611552c90a17447bc39beefb7c3.exe
2588	e20f061f25b4b7b804c8998e801a92a85ff57611552c90a17447bc39beefb7c3.exe
2588	e20f061f25b4b7b804c8998e801a92a85ff57611552c90a17447bc39beefb7c3.exe
2588	e20f061f25b4b7b804c8998e801a92a85ff57611552c90a17447bc39beefb7c3.exe
2588	e20f061f25b4b7b804c8998e801a92a85ff57611552c90a17447bc39beefb7c3.exe
64	sbietrcl.exe
64	sbietrcl.exe
64	sbietrcl.exe
64	sbietrcl.exe
64	sbietrcl.exe
64	sbietrcl.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2588	e20f061f25b4b7b804c8998e801a92a85ff57611552c90a17447bc39beefb7c3.exe
Token: SeDebugPrivilege	64	sbietrcl.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2588 wrote to memory of 64	2588	e20f061f25b4b7b804c8998e801a92a85ff57611552c90a17447bc39beefb7c3.exe	84
PID 2588 wrote to memory of 64	2588	e20f061f25b4b7b804c8998e801a92a85ff57611552c90a17447bc39beefb7c3.exe	84
PID 2588 wrote to memory of 64	2588	e20f061f25b4b7b804c8998e801a92a85ff57611552c90a17447bc39beefb7c3.exe	84
PID 64 wrote to memory of 4260	64	sbietrcl.exe	85
PID 64 wrote to memory of 4260	64	sbietrcl.exe	85
PID 64 wrote to memory of 4260	64	sbietrcl.exe	85
PID 64 wrote to memory of 4260	64	sbietrcl.exe	85
PID 64 wrote to memory of 4260	64	sbietrcl.exe	85
PID 64 wrote to memory of 4260	64	sbietrcl.exe	85
PID 64 wrote to memory of 4260	64	sbietrcl.exe	85
PID 64 wrote to memory of 4260	64	sbietrcl.exe	85
PID 64 wrote to memory of 4260	64	sbietrcl.exe	85

C:\Users\Admin\AppData\Local\Temp\e20f061f25b4b7b804c8998e801a92a85ff57611552c90a17447bc39beefb7c3.exe
"C:\Users\Admin\AppData\Local\Temp\e20f061f25b4b7b804c8998e801a92a85ff57611552c90a17447bc39beefb7c3.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:2588
- 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:64
- - 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:4260

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
2.2MB

MD5
b0f2cd7f1cc4d202ad433f4391202564

SHA1
b49d7297ba2d225282bbbeeadb5a0242f5103737

SHA256
bfd3cdd29289fa09455bb8b855cd8263f18d9eb6a5d95e283594bff0d4070ae8

SHA512
f920eede9e2310fd12ad2af4cd99d02aac91464d835f1feb87320b8b4fbf39a32931f28d87cc81f6e0d6038b8d44a67e905f3d696b3dfd6964a2c59d2f13e81e

Download Submit
memory/64-31-0x0000000075040000-0x00000000755F1000-memory.dmp

Filesize
5.7MB

Download
memory/64-30-0x0000000075040000-0x00000000755F1000-memory.dmp

Filesize
5.7MB

Download
memory/64-32-0x0000000075040000-0x00000000755F1000-memory.dmp

Filesize
5.7MB

Download
memory/64-39-0x0000000075040000-0x00000000755F1000-memory.dmp

Filesize
5.7MB

Download
memory/2588-2-0x0000000075040000-0x00000000755F1000-memory.dmp

Filesize
5.7MB

Download
memory/2588-5-0x0000000075040000-0x00000000755F1000-memory.dmp

Filesize
5.7MB

Download
memory/2588-17-0x0000000075042000-0x0000000075043000-memory.dmp

Filesize
4KB

Download
memory/2588-18-0x0000000075040000-0x00000000755F1000-memory.dmp

Filesize
5.7MB

Download
memory/2588-1-0x0000000075040000-0x00000000755F1000-memory.dmp

Filesize
5.7MB

Download
memory/2588-29-0x0000000075040000-0x00000000755F1000-memory.dmp

Filesize
5.7MB

Download
memory/2588-0-0x0000000075042000-0x0000000075043000-memory.dmp

Filesize
4KB

Download
memory/4260-35-0x0000000000560000-0x0000000000577000-memory.dmp

Filesize
92KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads