remcos | 04d46b9dfee3e14a714ff011856eee2abeeeb7c6cbe042dacd9996d3af861adc

General

Target

23a637d35dee17d4d74a34d981ba4b20N.exe
Size

2.1MB
MD5

23a637d35dee17d4d74a34d981ba4b20
SHA1

1eecd058bfd3e66f7badb648587595b21daaf951
SHA256

04d46b9dfee3e14a714ff011856eee2abeeeb7c6cbe042dacd9996d3af861adc
SHA512

c47890eedac4ccaf39d3d0eabf5590796f37576448e3841b309553ae2bb0acdfdc7afef2d98117f0458df4e59ce8bcf639f7752f3e88d74b201b7ebd91f5eac7
SSDEEP

24576:cD39v74lfGQrFUspugRNJI2DJ53J/J/L5dJPjYF4avnXJtL:cp7E+QrFUBgq2SnP

Score

10^/10

remcos host credential_access 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
Credentials from Password Stores: Credentials from Web Browsers 1 TTPs
Malicious Access or copy of Web Browser Credential store.
credential_access stealer

Credentials from Web Browsers
T1555.003

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-1-5-21-355097885-2402257403-2971294179-1000\Control Panel\International\Geo\Nation	23a637d35dee17d4d74a34d981ba4b20N.exe

Executes dropped EXE 2 IoCs

pid	Process
1724	sbietrcl.exe
456	sbietrcl.exe

Reads user/profile data of web browsers 2 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

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-1-5-21-355097885-2402257403-2971294179-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Application = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Templates\\sbietrcl.exe"	23a637d35dee17d4d74a34d981ba4b20N.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1724 set thread context of 456	1724	sbietrcl.exe	95

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	23a637d35dee17d4d74a34d981ba4b20N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sbietrcl.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sbietrcl.exe

Suspicious behavior: EnumeratesProcesses 12 IoCs

pid	Process
976	23a637d35dee17d4d74a34d981ba4b20N.exe
976	23a637d35dee17d4d74a34d981ba4b20N.exe
976	23a637d35dee17d4d74a34d981ba4b20N.exe
976	23a637d35dee17d4d74a34d981ba4b20N.exe
976	23a637d35dee17d4d74a34d981ba4b20N.exe
976	23a637d35dee17d4d74a34d981ba4b20N.exe
1724	sbietrcl.exe
1724	sbietrcl.exe
1724	sbietrcl.exe
1724	sbietrcl.exe
1724	sbietrcl.exe
1724	sbietrcl.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	976	23a637d35dee17d4d74a34d981ba4b20N.exe
Token: SeDebugPrivilege	1724	sbietrcl.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
456	sbietrcl.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 976 wrote to memory of 1724	976	23a637d35dee17d4d74a34d981ba4b20N.exe	92
PID 976 wrote to memory of 1724	976	23a637d35dee17d4d74a34d981ba4b20N.exe	92
PID 976 wrote to memory of 1724	976	23a637d35dee17d4d74a34d981ba4b20N.exe	92
PID 1724 wrote to memory of 456	1724	sbietrcl.exe	95
PID 1724 wrote to memory of 456	1724	sbietrcl.exe	95
PID 1724 wrote to memory of 456	1724	sbietrcl.exe	95
PID 1724 wrote to memory of 456	1724	sbietrcl.exe	95
PID 1724 wrote to memory of 456	1724	sbietrcl.exe	95
PID 1724 wrote to memory of 456	1724	sbietrcl.exe	95
PID 1724 wrote to memory of 456	1724	sbietrcl.exe	95
PID 1724 wrote to memory of 456	1724	sbietrcl.exe	95
PID 1724 wrote to memory of 456	1724	sbietrcl.exe	95

C:\Users\Admin\AppData\Local\Temp\23a637d35dee17d4d74a34d981ba4b20N.exe
"C:\Users\Admin\AppData\Local\Temp\23a637d35dee17d4d74a34d981ba4b20N.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:976
- 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:1724
- - 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:456

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
2.1MB

MD5
4cc1837abe2bf79b6ea05f3cf24a81ab

SHA1
efa8f9cd373e1a6cfbc5b62c380bef726f5f83c5

SHA256
86ae7af523d81897cd2447659e21a1bde96d82092c4528e2525399a5257a556e

SHA512
f1b6b25126c37f8b6b3bae727c1b0e8418a84401f072e49917815e83b93906814123412a0a88d755deaa52e74a360cc90e73009645129351b909235e9cdcd433

Download Submit
memory/456-35-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/456-49-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/456-45-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/456-43-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/456-39-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/456-42-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/456-38-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/976-18-0x0000000075162000-0x0000000075163000-memory.dmp

Filesize
4KB

Download
memory/976-30-0x0000000075160000-0x0000000075711000-memory.dmp

Filesize
5.7MB

Download
memory/976-19-0x0000000075160000-0x0000000075711000-memory.dmp

Filesize
5.7MB

Download
memory/976-0-0x0000000075162000-0x0000000075163000-memory.dmp

Filesize
4KB

Download
memory/976-5-0x0000000075160000-0x0000000075711000-memory.dmp

Filesize
5.7MB

Download
memory/976-6-0x0000000075160000-0x0000000075711000-memory.dmp

Filesize
5.7MB

Download
memory/976-2-0x0000000075160000-0x0000000075711000-memory.dmp

Filesize
5.7MB

Download
memory/976-1-0x0000000075160000-0x0000000075711000-memory.dmp

Filesize
5.7MB

Download
memory/1724-31-0x0000000075160000-0x0000000075711000-memory.dmp

Filesize
5.7MB

Download
memory/1724-32-0x0000000075160000-0x0000000075711000-memory.dmp

Filesize
5.7MB

Download
memory/1724-33-0x0000000075160000-0x0000000075711000-memory.dmp

Filesize
5.7MB

Download
memory/1724-34-0x0000000075160000-0x0000000075711000-memory.dmp

Filesize
5.7MB

Download
memory/1724-46-0x0000000075160000-0x0000000075711000-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