remcos | f8e8e8ee70d44b81dcb14b4e94163846c315c2d45ecb5a3888fd6db8a2e20714

General

Target

Quote.exe
Size

1.6MB
MD5

73da95db4e2d451af39f2e3d0d102836
SHA1

9d387a0f9f90686439406f1cc96a0eb3511a88b4
SHA256

f8e8e8ee70d44b81dcb14b4e94163846c315c2d45ecb5a3888fd6db8a2e20714
SHA512

a83f9aad5aa9b853b3674d628de1aab7d714191627c64779243954e5643c1f1565fdf4943e4ed3bed1f85046cf1b8eb86c3d0e5db3d4e81397db24f8076a7f57
SSDEEP

24576:ffmMv6Ckr7Mny5QLYXROlErRU3BobqTxRLGutJ3lzpHax8CS1/rW+9tMeOW0SYoq:f3v+7/5QLYkuYoGTxp6xe/rWuM89I

Score

10^/10

remcos remotehost discovery rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

www.projectusf.com:2404

Attributes

audio_folder
MicRecords
audio_record_time
5
connect_delay
0
connect_interval
1
copy_file
remcos.exe
copy_folder
Remcos
delete_file
false
hide_file
false
hide_keylog_file
false
install_flag
false
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
gfh
mouse_option
false
mutex
Rmc-J91LMC
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
take_screenshot_option
false
take_screenshot_time
5

Signatures

Remcos
Remcos is a closed-source remote control and surveillance software.
rat remcos

Drops startup file 1 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Quote.vbs	Quote.exe

Executes dropped EXE 1 IoCs

pid	Process
348	Quote.exe

AutoIT Executable 1 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral2/files/0x0008000000023c8a-5.dat	autoit_exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 348 set thread context of 4244	348	Quote.exe	87

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	Quote.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Quote.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
348	Quote.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4244	svchost.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 636 wrote to memory of 348	636	Quote.exe	86
PID 636 wrote to memory of 348	636	Quote.exe	86
PID 636 wrote to memory of 348	636	Quote.exe	86
PID 348 wrote to memory of 4244	348	Quote.exe	87
PID 348 wrote to memory of 4244	348	Quote.exe	87
PID 348 wrote to memory of 4244	348	Quote.exe	87
PID 348 wrote to memory of 4244	348	Quote.exe	87

C:\Users\Admin\AppData\Local\Temp\Quote.exe
"C:\Users\Admin\AppData\Local\Temp\Quote.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:636
- C:\Users\Admin\AppData\Local\directory\Quote.exe
  "C:\Users\Admin\AppData\Local\Temp\Quote.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of WriteProcessMemory
  PID:348
- - C:\Windows\SysWOW64\svchost.exe
    "C:\Users\Admin\AppData\Local\Temp\Quote.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    PID:4244

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\ProgramData\gfh\logs.dat

Filesize
144B

MD5
976abb8e52bd5774f289da533d859ee6

SHA1
4e22159022927a60f9990421e1c545750569a583

SHA256
c2ef10e461e9b2219ca130b1221d0769b3deae3f81c7998fee600c9992a9a375

SHA512
cc93cfb6f8ecccbb51869fae14e587042d30d2b7ef5e9fa6f48b243e3d4669715f4df8fe9d3b0a1e7c00c372c03e2c3c55e1bf848b925034fed553101c8ba4ee

Download Submit
C:\Users\Admin\AppData\Local\directory\Quote.exe

Filesize
1.6MB

MD5
73da95db4e2d451af39f2e3d0d102836

SHA1
9d387a0f9f90686439406f1cc96a0eb3511a88b4

SHA256
f8e8e8ee70d44b81dcb14b4e94163846c315c2d45ecb5a3888fd6db8a2e20714

SHA512
a83f9aad5aa9b853b3674d628de1aab7d714191627c64779243954e5643c1f1565fdf4943e4ed3bed1f85046cf1b8eb86c3d0e5db3d4e81397db24f8076a7f57

Download Submit
memory/348-10-0x0000000004080000-0x0000000004480000-memory.dmp

Filesize
4.0MB

Download
memory/636-2-0x0000000004610000-0x0000000004A10000-memory.dmp

Filesize
4.0MB

Download
memory/4244-14-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4244-28-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4244-15-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4244-16-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4244-19-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4244-20-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4244-21-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4244-22-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4244-23-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4244-26-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4244-27-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4244-13-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4244-30-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4244-12-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4244-36-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4244-37-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4244-44-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4244-45-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4244-52-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4244-60-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4244-61-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download

Analysis

Sharing