remcos | d950eb5505a609d0fc10edeb2db67120b35a6b9e977c343265d6b64e1c8e5afc

General

Target

d950eb5505a609d0fc10edeb2db67120b35a6b9e977c343265d6b64e1c8e5afcN.exe
Size

2.3MB
MD5

e2caad70b5d038f04b8616f8054cab50
SHA1

cd899cd6abfbfacdcf7dd564f24fd684976345ba
SHA256

d950eb5505a609d0fc10edeb2db67120b35a6b9e977c343265d6b64e1c8e5afc
SHA512

1fbfd629880dfd0709a83dc02fc72d7505acc9fa8c75cedd01eba53130bc220f93d3badf1d99f45948d9ad0a80c6aa851d3f43c7e9879411792cb48d10c03088
SSDEEP

24576:UD39v74lfGQrFUspugRNJI2DJ53J/J/L5dJPjYF4avnXJJJz5/2:Up7E+QrFUBgq2Sn7/2

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

Executes dropped EXE 2 IoCs

pid	Process
2592	sbietrcl.exe
1908	sbietrcl.exe

Loads dropped DLL 1 IoCs

pid	Process
2280	d950eb5505a609d0fc10edeb2db67120b35a6b9e977c343265d6b64e1c8e5afcN.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-1-5-21-3063565911-2056067323-3330884624-1000\Software\Microsoft\Windows\CurrentVersion\Run\Application = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Templates\\sbietrcl.exe"	d950eb5505a609d0fc10edeb2db67120b35a6b9e977c343265d6b64e1c8e5afcN.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2592 set thread context of 1908	2592	sbietrcl.exe	32

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	d950eb5505a609d0fc10edeb2db67120b35a6b9e977c343265d6b64e1c8e5afcN.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
2280	d950eb5505a609d0fc10edeb2db67120b35a6b9e977c343265d6b64e1c8e5afcN.exe
2280	d950eb5505a609d0fc10edeb2db67120b35a6b9e977c343265d6b64e1c8e5afcN.exe
2280	d950eb5505a609d0fc10edeb2db67120b35a6b9e977c343265d6b64e1c8e5afcN.exe
2280	d950eb5505a609d0fc10edeb2db67120b35a6b9e977c343265d6b64e1c8e5afcN.exe
2280	d950eb5505a609d0fc10edeb2db67120b35a6b9e977c343265d6b64e1c8e5afcN.exe
2280	d950eb5505a609d0fc10edeb2db67120b35a6b9e977c343265d6b64e1c8e5afcN.exe
2592	sbietrcl.exe
2592	sbietrcl.exe
2592	sbietrcl.exe
2592	sbietrcl.exe
2592	sbietrcl.exe
2592	sbietrcl.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2280	d950eb5505a609d0fc10edeb2db67120b35a6b9e977c343265d6b64e1c8e5afcN.exe
Token: SeDebugPrivilege	2592	sbietrcl.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1908	sbietrcl.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 2280 wrote to memory of 2592	2280	d950eb5505a609d0fc10edeb2db67120b35a6b9e977c343265d6b64e1c8e5afcN.exe	31
PID 2280 wrote to memory of 2592	2280	d950eb5505a609d0fc10edeb2db67120b35a6b9e977c343265d6b64e1c8e5afcN.exe	31
PID 2280 wrote to memory of 2592	2280	d950eb5505a609d0fc10edeb2db67120b35a6b9e977c343265d6b64e1c8e5afcN.exe	31
PID 2280 wrote to memory of 2592	2280	d950eb5505a609d0fc10edeb2db67120b35a6b9e977c343265d6b64e1c8e5afcN.exe	31
PID 2592 wrote to memory of 1908	2592	sbietrcl.exe	32
PID 2592 wrote to memory of 1908	2592	sbietrcl.exe	32
PID 2592 wrote to memory of 1908	2592	sbietrcl.exe	32
PID 2592 wrote to memory of 1908	2592	sbietrcl.exe	32
PID 2592 wrote to memory of 1908	2592	sbietrcl.exe	32
PID 2592 wrote to memory of 1908	2592	sbietrcl.exe	32
PID 2592 wrote to memory of 1908	2592	sbietrcl.exe	32
PID 2592 wrote to memory of 1908	2592	sbietrcl.exe	32
PID 2592 wrote to memory of 1908	2592	sbietrcl.exe	32
PID 2592 wrote to memory of 1908	2592	sbietrcl.exe	32

C:\Users\Admin\AppData\Local\Temp\d950eb5505a609d0fc10edeb2db67120b35a6b9e977c343265d6b64e1c8e5afcN.exe
"C:\Users\Admin\AppData\Local\Temp\d950eb5505a609d0fc10edeb2db67120b35a6b9e977c343265d6b64e1c8e5afcN.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2280
- 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:2592
- - 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:1908

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

System Information Discovery

1

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\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

Filesize
342B

MD5
0471bf307e3a9a1bcc69afccce89aa61

SHA1
d920186082af031a6b6ac812ada7f25caaf19d80

SHA256
61bb2d7b7fbe7490b6864ab28dd7dd2850ebd8c2a20f38b6594f32f4d3e2dd8d

SHA512
5d48c811fa37a83c2ac063f41b01a6db44435641f39f013440daede39cbbba6875f5dc399d728431db4808f4ce88dab6cb2001d09ddd408402550b717ff0a0ab

Download Submit
C:\Users\Admin\AppData\Local\Temp\CabFE2D.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

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

Filesize
2.3MB

MD5
7e7a6d6d510aa7bed256c5f34b176e0d

SHA1
c3279e27b5389385dc1c6e42a2a05c5478dbdd2a

SHA256
2cf0a7b80788dbabefd4822ca74ac1719bcc34386e455cdedbfb0d8c3ed29347

SHA512
f6fe5068863261adf2d01a5b04fb34a351d445930130459cda2f8e3fc580ea69d50e86b3386de56e1639d037b8045e13d73ca6530fe1740dadc549df4bb16b75

Download Submit
memory/1908-53-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1908-51-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/1908-68-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/1908-64-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/1908-60-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/1908-63-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/1908-49-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/1908-59-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/1908-55-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/1908-47-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/1908-43-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/1908-45-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/1908-58-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2280-0-0x00000000746F1000-0x00000000746F2000-memory.dmp

Filesize
4KB

Download
memory/2280-12-0x00000000746F0000-0x0000000074C9B000-memory.dmp

Filesize
5.7MB

Download
memory/2280-1-0x00000000746F0000-0x0000000074C9B000-memory.dmp

Filesize
5.7MB

Download
memory/2280-11-0x00000000746F0000-0x0000000074C9B000-memory.dmp

Filesize
5.7MB

Download
memory/2280-30-0x00000000746F0000-0x0000000074C9B000-memory.dmp

Filesize
5.7MB

Download
memory/2592-41-0x00000000746F0000-0x0000000074C9B000-memory.dmp

Filesize
5.7MB

Download
memory/2592-42-0x00000000746F0000-0x0000000074C9B000-memory.dmp

Filesize
5.7MB

Download
memory/2592-32-0x00000000746F0000-0x0000000074C9B000-memory.dmp

Filesize
5.7MB

Download
memory/2592-65-0x00000000746F0000-0x0000000074C9B000-memory.dmp

Filesize
5.7MB

Download
memory/2592-31-0x00000000746F0000-0x0000000074C9B000-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