remcos | 032f8672b774c3a0edd3b84b0f809e1901319a2b0a4a60704e75f92bdac4f7bb

Analysis

max time kernel
150s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
26/01/2023, 08:43

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General

Target
1367e9b33b836587e50124eb9eb2397b.exe
Size 2.5MB
Sample230126-kmklwsdb46
SHA256 032f8672b774c3a0edd3b84b0f809e1901319a2b0a4a60704e75f92bdac4f7bb
MD5 1367e9b33b836587e50124eb9eb2397b
SHA1 d7227929468d91e50d3cd8f94ea2015506759c09
SHA512 3bafc398a913117b37f41ae31f79ec65ec09d6627b3fd60ecb0a5be8dd66e92a6760f9501a4ee9cf2767d0b5717a137b9c12c3e813e986ca53f9c12f85a57709
SSDEEP 24576:LyhWx7lfT+DtXTeUXEkjoDpvOykLPaEbOEh5wwsUHoeDAYOgLpgO9irvO4vx8X8g:bqEkCkTF7OIVAX/
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

remcos remotehost persistence rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

rem.unionbindinqcompany.it:3361

Attributes

audio_folder
MicRecords
audio_record_time
5
connect_delay
0
connect_interval
1
copy_file
Chromes.exe
copy_folder
Chrome
delete_file
false
hide_file
false
hide_keylog_file
false
install_flag
true
install_path
%ProgramFiles%
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
mouse_option
false
mutex
Rmc-SSF8AQ
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
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 3 IoCs

pid	Process
2664	Chromes.exe
5032	Chromes.exe
368	Chromes.exe

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-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation	1367e9b33b836587e50124eb9eb2397b.exe

Adds Run key to start application 2 TTPs 8 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Windows\CurrentVersion\Run\	Chromes.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Remcos = "\"C:\\Program Files (x86)\\Chrome\\Chromes.exe\""	Chromes.exe
Key created	\REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\	Chromes.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Remcos = "\"C:\\Program Files (x86)\\Chrome\\Chromes.exe\""	Chromes.exe
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Windows\CurrentVersion\Run\	1367e9b33b836587e50124eb9eb2397b.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Remcos = "\"C:\\Program Files (x86)\\Chrome\\Chromes.exe\""	1367e9b33b836587e50124eb9eb2397b.exe
Key created	\REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\	1367e9b33b836587e50124eb9eb2397b.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Remcos = "\"C:\\Program Files (x86)\\Chrome\\Chromes.exe\""	1367e9b33b836587e50124eb9eb2397b.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1856 set thread context of 4824	1856	1367e9b33b836587e50124eb9eb2397b.exe	80
PID 2664 set thread context of 368	2664	Chromes.exe	83

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\Chrome\Chromes.exe	1367e9b33b836587e50124eb9eb2397b.exe
File opened for modification	C:\Program Files (x86)\Chrome\Chromes.exe	1367e9b33b836587e50124eb9eb2397b.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2664	Chromes.exe
2664	Chromes.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2664	Chromes.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 1856 wrote to memory of 4824	1856	1367e9b33b836587e50124eb9eb2397b.exe	80
PID 1856 wrote to memory of 4824	1856	1367e9b33b836587e50124eb9eb2397b.exe	80
PID 1856 wrote to memory of 4824	1856	1367e9b33b836587e50124eb9eb2397b.exe	80
PID 1856 wrote to memory of 4824	1856	1367e9b33b836587e50124eb9eb2397b.exe	80
PID 1856 wrote to memory of 4824	1856	1367e9b33b836587e50124eb9eb2397b.exe	80
PID 1856 wrote to memory of 4824	1856	1367e9b33b836587e50124eb9eb2397b.exe	80
PID 1856 wrote to memory of 4824	1856	1367e9b33b836587e50124eb9eb2397b.exe	80
PID 1856 wrote to memory of 4824	1856	1367e9b33b836587e50124eb9eb2397b.exe	80
PID 1856 wrote to memory of 4824	1856	1367e9b33b836587e50124eb9eb2397b.exe	80
PID 1856 wrote to memory of 4824	1856	1367e9b33b836587e50124eb9eb2397b.exe	80
PID 1856 wrote to memory of 4824	1856	1367e9b33b836587e50124eb9eb2397b.exe	80
PID 1856 wrote to memory of 4824	1856	1367e9b33b836587e50124eb9eb2397b.exe	80
PID 4824 wrote to memory of 2664	4824	1367e9b33b836587e50124eb9eb2397b.exe	81
PID 4824 wrote to memory of 2664	4824	1367e9b33b836587e50124eb9eb2397b.exe	81
PID 4824 wrote to memory of 2664	4824	1367e9b33b836587e50124eb9eb2397b.exe	81
PID 2664 wrote to memory of 5032	2664	Chromes.exe	82
PID 2664 wrote to memory of 5032	2664	Chromes.exe	82
PID 2664 wrote to memory of 5032	2664	Chromes.exe	82
PID 2664 wrote to memory of 368	2664	Chromes.exe	83
PID 2664 wrote to memory of 368	2664	Chromes.exe	83
PID 2664 wrote to memory of 368	2664	Chromes.exe	83
PID 2664 wrote to memory of 368	2664	Chromes.exe	83
PID 2664 wrote to memory of 368	2664	Chromes.exe	83
PID 2664 wrote to memory of 368	2664	Chromes.exe	83
PID 2664 wrote to memory of 368	2664	Chromes.exe	83
PID 2664 wrote to memory of 368	2664	Chromes.exe	83
PID 2664 wrote to memory of 368	2664	Chromes.exe	83
PID 2664 wrote to memory of 368	2664	Chromes.exe	83
PID 2664 wrote to memory of 368	2664	Chromes.exe	83
PID 2664 wrote to memory of 368	2664	Chromes.exe	83

C:\Users\Admin\AppData\Local\Temp\1367e9b33b836587e50124eb9eb2397b.exe
"C:\Users\Admin\AppData\Local\Temp\1367e9b33b836587e50124eb9eb2397b.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1856
- C:\Users\Admin\AppData\Local\Temp\1367e9b33b836587e50124eb9eb2397b.exe
  "C:\Users\Admin\AppData\Local\Temp\1367e9b33b836587e50124eb9eb2397b.exe"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - Drops file in Program Files directory
  - Suspicious use of WriteProcessMemory
  PID:4824
- - C:\Program Files (x86)\Chrome\Chromes.exe
    "C:\Program Files (x86)\Chrome\Chromes.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:2664
  - - C:\Program Files (x86)\Chrome\Chromes.exe
      "C:\Program Files (x86)\Chrome\Chromes.exe"
      4⤵
      Executes dropped EXE
      PID:5032
  - - C:\Program Files (x86)\Chrome\Chromes.exe
      "C:\Program Files (x86)\Chrome\Chromes.exe"
      4⤵
      Executes dropped EXE
      Adds Run key to start application
      PID:368

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

Chromes.exe

Path C:\Program Files (x86)\Chrome\Chromes.exe
Size 2.5MB
SHA256 032f8672b774c3a0edd3b84b0f809e1901319a2b0a4a60704e75f92bdac4f7bb
MD5 1367e9b33b836587e50124eb9eb2397b
SHA1 d7227929468d91e50d3cd8f94ea2015506759c09
SHA512 3bafc398a913117b37f41ae31f79ec65ec09d6627b3fd60ecb0a5be8dd66e92a6760f9501a4ee9cf2767d0b5717a137b9c12c3e813e986ca53f9c12f85a57709
SSDEEP 24576:LyhWx7lfT+DtXTeUXEkjoDpvOykLPaEbOEh5wwsUHoeDAYOgLpgO9irvO4vx8X8g:bqEkCkTF7OIVAX/
MD5 SHA1 SHA512 SSDEEP

Submit Download

Chromes.exe

Path C:\Program Files (x86)\Chrome\Chromes.exe
Size 2.5MB
SHA256 032f8672b774c3a0edd3b84b0f809e1901319a2b0a4a60704e75f92bdac4f7bb
MD5 1367e9b33b836587e50124eb9eb2397b
SHA1 d7227929468d91e50d3cd8f94ea2015506759c09
SHA512 3bafc398a913117b37f41ae31f79ec65ec09d6627b3fd60ecb0a5be8dd66e92a6760f9501a4ee9cf2767d0b5717a137b9c12c3e813e986ca53f9c12f85a57709
SSDEEP 24576:LyhWx7lfT+DtXTeUXEkjoDpvOykLPaEbOEh5wwsUHoeDAYOgLpgO9irvO4vx8X8g:bqEkCkTF7OIVAX/
MD5 SHA1 SHA512 SSDEEP

Submit Download

Chromes.exe

Path C:\Program Files (x86)\Chrome\Chromes.exe
Size 2.5MB
SHA256 032f8672b774c3a0edd3b84b0f809e1901319a2b0a4a60704e75f92bdac4f7bb
MD5 1367e9b33b836587e50124eb9eb2397b
SHA1 d7227929468d91e50d3cd8f94ea2015506759c09
SHA512 3bafc398a913117b37f41ae31f79ec65ec09d6627b3fd60ecb0a5be8dd66e92a6760f9501a4ee9cf2767d0b5717a137b9c12c3e813e986ca53f9c12f85a57709
SSDEEP 24576:LyhWx7lfT+DtXTeUXEkjoDpvOykLPaEbOEh5wwsUHoeDAYOgLpgO9irvO4vx8X8g:bqEkCkTF7OIVAX/
MD5 SHA1 SHA512 SSDEEP

Submit Download

Chromes.exe

Path C:\Program Files (x86)\Chrome\Chromes.exe
Size 2.5MB
SHA256 032f8672b774c3a0edd3b84b0f809e1901319a2b0a4a60704e75f92bdac4f7bb
MD5 1367e9b33b836587e50124eb9eb2397b
SHA1 d7227929468d91e50d3cd8f94ea2015506759c09
SHA512 3bafc398a913117b37f41ae31f79ec65ec09d6627b3fd60ecb0a5be8dd66e92a6760f9501a4ee9cf2767d0b5717a137b9c12c3e813e986ca53f9c12f85a57709
SSDEEP 24576:LyhWx7lfT+DtXTeUXEkjoDpvOykLPaEbOEh5wwsUHoeDAYOgLpgO9irvO4vx8X8g:bqEkCkTF7OIVAX/
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/368-151-0x0000000000400000-0x0000000000480000-memory.dmp

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memory/368-150-0x0000000000400000-0x0000000000480000-memory.dmp

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memory/368-149-0x0000000000400000-0x0000000000480000-memory.dmp

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memory/368-148-0x0000000000400000-0x0000000000480000-memory.dmp

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memory/1856-132-0x0000000000CD0000-0x0000000000F50000-memory.dmp

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memory/1856-133-0x0000000005F70000-0x0000000006514000-memory.dmp

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memory/4824-142-0x0000000000400000-0x0000000000480000-memory.dmp

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memory/4824-135-0x0000000000400000-0x0000000000480000-memory.dmp

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memory/4824-138-0x0000000000400000-0x0000000000480000-memory.dmp

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memory/4824-137-0x0000000000400000-0x0000000000480000-memory.dmp

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memory/4824-136-0x0000000000400000-0x0000000000480000-memory.dmp

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