remcos | 3d0ac904350f77a399f1ec7f6779c294c8be2c7f54eb7343c21f6df264edd7a2

General

Target

bbb638c562b3df98a2b1b636e82cfdd0N.exe
Size

2.0MB
MD5

bbb638c562b3df98a2b1b636e82cfdd0
SHA1

90778955c9cdf9977de455ea28979ca5095d242b
SHA256

3d0ac904350f77a399f1ec7f6779c294c8be2c7f54eb7343c21f6df264edd7a2
SHA512

a357391e15404d444c6f37826cc967cf89e652e890a69cc0284a4972847f2be42d718ac865e34c5475a3db3facdfc91379c98c9a1d836241e5658ac72b6b5acb
SSDEEP

24576:/D39v74lfGQrFUspugRNJI2DJ53J/J/L5dJPj8/j73Anet9/wL:/p7E+QrFUBgq2D

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	bbb638c562b3df98a2b1b636e82cfdd0N.exe

Executes dropped EXE 2 IoCs

pid	Process
436	sbietrcl.exe
3852	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"	bbb638c562b3df98a2b1b636e82cfdd0N.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 436 set thread context of 3852	436	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	bbb638c562b3df98a2b1b636e82cfdd0N.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
4224	bbb638c562b3df98a2b1b636e82cfdd0N.exe
4224	bbb638c562b3df98a2b1b636e82cfdd0N.exe
4224	bbb638c562b3df98a2b1b636e82cfdd0N.exe
4224	bbb638c562b3df98a2b1b636e82cfdd0N.exe
4224	bbb638c562b3df98a2b1b636e82cfdd0N.exe
4224	bbb638c562b3df98a2b1b636e82cfdd0N.exe
436	sbietrcl.exe
436	sbietrcl.exe
436	sbietrcl.exe
436	sbietrcl.exe
436	sbietrcl.exe
436	sbietrcl.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4224	bbb638c562b3df98a2b1b636e82cfdd0N.exe
Token: SeDebugPrivilege	436	sbietrcl.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3852	sbietrcl.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 4224 wrote to memory of 436	4224	bbb638c562b3df98a2b1b636e82cfdd0N.exe	92
PID 4224 wrote to memory of 436	4224	bbb638c562b3df98a2b1b636e82cfdd0N.exe	92
PID 4224 wrote to memory of 436	4224	bbb638c562b3df98a2b1b636e82cfdd0N.exe	92
PID 436 wrote to memory of 3852	436	sbietrcl.exe	95
PID 436 wrote to memory of 3852	436	sbietrcl.exe	95
PID 436 wrote to memory of 3852	436	sbietrcl.exe	95
PID 436 wrote to memory of 3852	436	sbietrcl.exe	95
PID 436 wrote to memory of 3852	436	sbietrcl.exe	95
PID 436 wrote to memory of 3852	436	sbietrcl.exe	95
PID 436 wrote to memory of 3852	436	sbietrcl.exe	95
PID 436 wrote to memory of 3852	436	sbietrcl.exe	95
PID 436 wrote to memory of 3852	436	sbietrcl.exe	95

C:\Users\Admin\AppData\Local\Temp\bbb638c562b3df98a2b1b636e82cfdd0N.exe
"C:\Users\Admin\AppData\Local\Temp\bbb638c562b3df98a2b1b636e82cfdd0N.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:436
- - 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:3852

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

Replay Monitor

Loading Replay Monitor...

Downloads

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

Filesize
2.0MB

MD5
5026782ff3894b2d6c7f5b16842d324b

SHA1
f556bbd22a528941de70bc6bedc22a0bdd417631

SHA256
eda7e54ca8402093957dba7c87ec328e3c3b12280475b1c4775ac5d3a3651f36

SHA512
8fb51ecb895abc0478df254ecbf269008e7a3274fe6c81109fd73195e09b62c60069e86140e909d47bbcc1fa9967550582ec93f68f9993b76d0bb5de1ebfd4f4

Download Submit
memory/436-44-0x0000000074A40000-0x0000000074FF1000-memory.dmp

Filesize
5.7MB

Download
memory/436-32-0x0000000074A40000-0x0000000074FF1000-memory.dmp

Filesize
5.7MB

Download
memory/436-31-0x0000000074A40000-0x0000000074FF1000-memory.dmp

Filesize
5.7MB

Download
memory/436-30-0x0000000074A40000-0x0000000074FF1000-memory.dmp

Filesize
5.7MB

Download
memory/436-29-0x0000000074A40000-0x0000000074FF1000-memory.dmp

Filesize
5.7MB

Download
memory/3852-40-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/3852-41-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/3852-47-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/3852-42-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/3852-37-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/3852-36-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/3852-33-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/4224-2-0x0000000074A40000-0x0000000074FF1000-memory.dmp

Filesize
5.7MB

Download
memory/4224-3-0x0000000074A40000-0x0000000074FF1000-memory.dmp

Filesize
5.7MB

Download
memory/4224-0-0x0000000074A42000-0x0000000074A43000-memory.dmp

Filesize
4KB

Download
memory/4224-17-0x0000000074A40000-0x0000000074FF1000-memory.dmp

Filesize
5.7MB

Download
memory/4224-4-0x0000000074A40000-0x0000000074FF1000-memory.dmp

Filesize
5.7MB

Download
memory/4224-16-0x0000000074A42000-0x0000000074A43000-memory.dmp

Filesize
4KB

Download
memory/4224-1-0x0000000074A40000-0x0000000074FF1000-memory.dmp

Filesize
5.7MB

Download
memory/4224-28-0x0000000074A40000-0x0000000074FF1000-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