remcos | 966aac44a4b149602aa9f300ba03e888164108c0d101feb75f5e5d94f4c1c5d4

General

Target

966aac44a4b149602aa9f300ba03e888164108c0d101feb75f5e5d94f4c1c5d4.exe
Size

1.9MB
MD5

2d68d3b9130925d7e5bc60ee9c7d153c
SHA1

1c3d2f0827b15fa6e7593ca1c5f2d745b1094019
SHA256

966aac44a4b149602aa9f300ba03e888164108c0d101feb75f5e5d94f4c1c5d4
SHA512

2f23d4d8f2799d93f3977d42acb10ce317f94a53fd49005b637ccce0a4b0ba429053258880d8b564874bea36cdfa167f68798df2171b78518a6a45b39df07f61
SSDEEP

24576:9D39dlfGQrFUspugRNJI2DJnUw9W/j+BeKJWqwH6j1:9F+QrFUBgq25eKu6j1

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
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-1-5-21-814918696-1585701690-3140955116-1000\Control Panel\International\Geo\Nation	966aac44a4b149602aa9f300ba03e888164108c0d101feb75f5e5d94f4c1c5d4.exe

Executes dropped EXE 2 IoCs

pid	Process
5576	sbietrcl.exe
4660	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-1-5-21-814918696-1585701690-3140955116-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Application = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Templates\\sbietrcl.exe"	966aac44a4b149602aa9f300ba03e888164108c0d101feb75f5e5d94f4c1c5d4.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 5576 set thread context of 4660	5576	sbietrcl.exe	96

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	966aac44a4b149602aa9f300ba03e888164108c0d101feb75f5e5d94f4c1c5d4.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
2264	966aac44a4b149602aa9f300ba03e888164108c0d101feb75f5e5d94f4c1c5d4.exe
2264	966aac44a4b149602aa9f300ba03e888164108c0d101feb75f5e5d94f4c1c5d4.exe
2264	966aac44a4b149602aa9f300ba03e888164108c0d101feb75f5e5d94f4c1c5d4.exe
2264	966aac44a4b149602aa9f300ba03e888164108c0d101feb75f5e5d94f4c1c5d4.exe
2264	966aac44a4b149602aa9f300ba03e888164108c0d101feb75f5e5d94f4c1c5d4.exe
2264	966aac44a4b149602aa9f300ba03e888164108c0d101feb75f5e5d94f4c1c5d4.exe
5576	sbietrcl.exe
5576	sbietrcl.exe
5576	sbietrcl.exe
5576	sbietrcl.exe
5576	sbietrcl.exe
5576	sbietrcl.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2264	966aac44a4b149602aa9f300ba03e888164108c0d101feb75f5e5d94f4c1c5d4.exe
Token: SeDebugPrivilege	5576	sbietrcl.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4660	sbietrcl.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2264 wrote to memory of 5576	2264	966aac44a4b149602aa9f300ba03e888164108c0d101feb75f5e5d94f4c1c5d4.exe	94
PID 2264 wrote to memory of 5576	2264	966aac44a4b149602aa9f300ba03e888164108c0d101feb75f5e5d94f4c1c5d4.exe	94
PID 2264 wrote to memory of 5576	2264	966aac44a4b149602aa9f300ba03e888164108c0d101feb75f5e5d94f4c1c5d4.exe	94
PID 5576 wrote to memory of 4660	5576	sbietrcl.exe	96
PID 5576 wrote to memory of 4660	5576	sbietrcl.exe	96
PID 5576 wrote to memory of 4660	5576	sbietrcl.exe	96
PID 5576 wrote to memory of 4660	5576	sbietrcl.exe	96
PID 5576 wrote to memory of 4660	5576	sbietrcl.exe	96
PID 5576 wrote to memory of 4660	5576	sbietrcl.exe	96
PID 5576 wrote to memory of 4660	5576	sbietrcl.exe	96
PID 5576 wrote to memory of 4660	5576	sbietrcl.exe	96
PID 5576 wrote to memory of 4660	5576	sbietrcl.exe	96

C:\Users\Admin\AppData\Local\Temp\966aac44a4b149602aa9f300ba03e888164108c0d101feb75f5e5d94f4c1c5d4.exe
"C:\Users\Admin\AppData\Local\Temp\966aac44a4b149602aa9f300ba03e888164108c0d101feb75f5e5d94f4c1c5d4.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:2264
- 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:5576
- - 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:4660

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
1.9MB

MD5
a9a638701f5949119254a7550f68a5d8

SHA1
8cd0697300d245441b4491469a197421e2aec4a3

SHA256
38ca384aa1fc875cce612094a37d382ed276acc446745ee761fe0541375c1ed1

SHA512
5319cfaa640b53fe912a6ef090e1d47021b54c8f75bb0a410c649c85f2845a2b8078cb3afb6bf2c2d0c9d77e697926a73b9e528f6e1ed9bd227bc473579f7e3d

Download Submit
memory/2264-0-0x0000000074882000-0x0000000074883000-memory.dmp

Filesize
4KB

Download
memory/2264-1-0x0000000074880000-0x0000000074E31000-memory.dmp

Filesize
5.7MB

Download
memory/2264-2-0x0000000074880000-0x0000000074E31000-memory.dmp

Filesize
5.7MB

Download
memory/2264-5-0x0000000074880000-0x0000000074E31000-memory.dmp

Filesize
5.7MB

Download
memory/2264-6-0x0000000074880000-0x0000000074E31000-memory.dmp

Filesize
5.7MB

Download
memory/2264-18-0x0000000074882000-0x0000000074883000-memory.dmp

Filesize
4KB

Download
memory/2264-19-0x0000000074880000-0x0000000074E31000-memory.dmp

Filesize
5.7MB

Download
memory/2264-30-0x0000000074880000-0x0000000074E31000-memory.dmp

Filesize
5.7MB

Download
memory/4660-39-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/4660-35-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/4660-38-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/4660-42-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/4660-43-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/4660-45-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/4660-49-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/5576-32-0x0000000074880000-0x0000000074E31000-memory.dmp

Filesize
5.7MB

Download
memory/5576-33-0x0000000074880000-0x0000000074E31000-memory.dmp

Filesize
5.7MB

Download
memory/5576-34-0x0000000074880000-0x0000000074E31000-memory.dmp

Filesize
5.7MB

Download
memory/5576-31-0x0000000074880000-0x0000000074E31000-memory.dmp

Filesize
5.7MB

Download
memory/5576-46-0x0000000074880000-0x0000000074E31000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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