remcos | 3f86d2104c77af0637f17c14074db53f3e28bcc42f76448547c818c6ff2cd97d

General

Target

3f86d2104c77af0637f17c14074db53f3e28bcc42f76448547c818c6ff2cd97dN.exe
Size

2.2MB
MD5

4147d7559e55883dae22ad42793de950
SHA1

3ffe069ccd3a978be55977f11548d041feb99ee0
SHA256

3f86d2104c77af0637f17c14074db53f3e28bcc42f76448547c818c6ff2cd97d
SHA512

9c6f6c2bde5c3eb152ed0fc397d1bd9919c2f75dc146b06d8e7b57c9aad4a0e1a573d6fbd6c48d1a6a4f8c15a72032677c0fd5d13c357fceb9818fc98eaf881c
SSDEEP

24576:rD39v74lfGQrFUspugRNJI2DJ53J/J/L5dJPjYF4avnXJJJzM:rp7E+QrFUBgq2Snq

Score

10^/10

remcos host 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

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-1-5-21-2170637797-568393320-3232933035-1000\Control Panel\International\Geo\Nation	3f86d2104c77af0637f17c14074db53f3e28bcc42f76448547c818c6ff2cd97dN.exe

Executes dropped EXE 2 IoCs

pid	Process
4464	sbietrcl.exe
5016	sbietrcl.exe

Reads user/profile data of web browsers 3 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

Credentials from Web Browsers
T1555.003

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-1-5-21-2170637797-568393320-3232933035-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Application = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Templates\\sbietrcl.exe"	3f86d2104c77af0637f17c14074db53f3e28bcc42f76448547c818c6ff2cd97dN.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4464 set thread context of 5016	4464	sbietrcl.exe	94

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	3f86d2104c77af0637f17c14074db53f3e28bcc42f76448547c818c6ff2cd97dN.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
4872	3f86d2104c77af0637f17c14074db53f3e28bcc42f76448547c818c6ff2cd97dN.exe
4872	3f86d2104c77af0637f17c14074db53f3e28bcc42f76448547c818c6ff2cd97dN.exe
4872	3f86d2104c77af0637f17c14074db53f3e28bcc42f76448547c818c6ff2cd97dN.exe
4872	3f86d2104c77af0637f17c14074db53f3e28bcc42f76448547c818c6ff2cd97dN.exe
4872	3f86d2104c77af0637f17c14074db53f3e28bcc42f76448547c818c6ff2cd97dN.exe
4872	3f86d2104c77af0637f17c14074db53f3e28bcc42f76448547c818c6ff2cd97dN.exe
4464	sbietrcl.exe
4464	sbietrcl.exe
4464	sbietrcl.exe
4464	sbietrcl.exe
4464	sbietrcl.exe
4464	sbietrcl.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4872	3f86d2104c77af0637f17c14074db53f3e28bcc42f76448547c818c6ff2cd97dN.exe
Token: SeDebugPrivilege	4464	sbietrcl.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
5016	sbietrcl.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 4872 wrote to memory of 4464	4872	3f86d2104c77af0637f17c14074db53f3e28bcc42f76448547c818c6ff2cd97dN.exe	92
PID 4872 wrote to memory of 4464	4872	3f86d2104c77af0637f17c14074db53f3e28bcc42f76448547c818c6ff2cd97dN.exe	92
PID 4872 wrote to memory of 4464	4872	3f86d2104c77af0637f17c14074db53f3e28bcc42f76448547c818c6ff2cd97dN.exe	92
PID 4464 wrote to memory of 5016	4464	sbietrcl.exe	94
PID 4464 wrote to memory of 5016	4464	sbietrcl.exe	94
PID 4464 wrote to memory of 5016	4464	sbietrcl.exe	94
PID 4464 wrote to memory of 5016	4464	sbietrcl.exe	94
PID 4464 wrote to memory of 5016	4464	sbietrcl.exe	94
PID 4464 wrote to memory of 5016	4464	sbietrcl.exe	94
PID 4464 wrote to memory of 5016	4464	sbietrcl.exe	94
PID 4464 wrote to memory of 5016	4464	sbietrcl.exe	94
PID 4464 wrote to memory of 5016	4464	sbietrcl.exe	94

C:\Users\Admin\AppData\Local\Temp\3f86d2104c77af0637f17c14074db53f3e28bcc42f76448547c818c6ff2cd97dN.exe
"C:\Users\Admin\AppData\Local\Temp\3f86d2104c77af0637f17c14074db53f3e28bcc42f76448547c818c6ff2cd97dN.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:4872
- 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:4464
- - 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:5016

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=3980,i,3239535018877284530,3457823197501312703,262144 --variations-seed-version --mojo-platform-channel-handle=4420 /prefetch:8
1⤵
PID:2084

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
2.2MB

MD5
24604c5f2eb8cc69972c6062bbc3a72f

SHA1
9ae93911079373a9f657ccc969209a1490108f66

SHA256
f3fe1b29bae51dc730d0169ed86926f621a6fdb04a0b90a7650391687809dfec

SHA512
70ddb3445e72b6bbff03d2987358df49128b93e3a18d560c4498fd7f64ff8b6c19efd144f3efa98ae42c0478e2c7c451db400a1b39fbcfc2fbcb88cfdbb77eb9

Download Submit
memory/4464-46-0x00000000747B0000-0x0000000074D61000-memory.dmp

Filesize
5.7MB

Download
memory/4464-34-0x00000000747B0000-0x0000000074D61000-memory.dmp

Filesize
5.7MB

Download
memory/4464-33-0x00000000747B0000-0x0000000074D61000-memory.dmp

Filesize
5.7MB

Download
memory/4464-32-0x00000000747B0000-0x0000000074D61000-memory.dmp

Filesize
5.7MB

Download
memory/4464-31-0x00000000747B0000-0x0000000074D61000-memory.dmp

Filesize
5.7MB

Download
memory/4872-18-0x00000000747B2000-0x00000000747B3000-memory.dmp

Filesize
4KB

Download
memory/4872-1-0x00000000747B0000-0x0000000074D61000-memory.dmp

Filesize
5.7MB

Download
memory/4872-30-0x00000000747B0000-0x0000000074D61000-memory.dmp

Filesize
5.7MB

Download
memory/4872-0-0x00000000747B2000-0x00000000747B3000-memory.dmp

Filesize
4KB

Download
memory/4872-6-0x00000000747B0000-0x0000000074D61000-memory.dmp

Filesize
5.7MB

Download
memory/4872-5-0x00000000747B0000-0x0000000074D61000-memory.dmp

Filesize
5.7MB

Download
memory/4872-2-0x00000000747B0000-0x0000000074D61000-memory.dmp

Filesize
5.7MB

Download
memory/4872-19-0x00000000747B0000-0x0000000074D61000-memory.dmp

Filesize
5.7MB

Download
memory/5016-35-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/5016-42-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/5016-43-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/5016-44-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/5016-39-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/5016-38-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/5016-49-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads