remcos | 4583b002fce0501faad20dd27af109b8a57288004190c501b20ad1e645dd8610

Resubmissions

19/12/2022, 02:20

221219-csrcmaea94 10

15/12/2022, 08:58

221215-kw59ysfa7s 10

Analysis

max time kernel
150s
max time network
145s
platform
windows7_x64
resource
win7-20221111-en
resource tags

arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
submitted
15/12/2022, 08:58

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General

Target

Payments copy.exe
Size

1.1MB
MD5

515304eb9aef3694b0960c9037740017
SHA1

acf2f7ab8ebc60957028b7799c5329639ed7aa8d
SHA256

4583b002fce0501faad20dd27af109b8a57288004190c501b20ad1e645dd8610
SHA512

50ba8b5578770be0cad1099bbd44b62dc62c2987f368db65a929e8d7f4fde19c4e0bbf30e815f60f4bf190c5ac0f62d77544cfe15bb3055e36458f9405ac0b6b
SSDEEP

24576:qi3uqj3R7WQ7G++bjPAhXk/QDw8HkF3dg:l+KRWQobjukMEF

Score

10^/10

remcos remotehost reff rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost Reff

185.136.161.189:1960

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
remcos
mouse_option
false
mutex
Rmc-IPL25E
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

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1544 set thread context of 1744	1544	Payments copy.exe	35

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

System Information Discovery
T1082

Creates scheduled task(s) 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task

T1053

pid	Process
940	schtasks.exe

Suspicious behavior: EnumeratesProcesses 7 IoCs

pid	Process
1544	Payments copy.exe
1544	Payments copy.exe
1544	Payments copy.exe
1544	Payments copy.exe
1544	Payments copy.exe
1544	Payments copy.exe
976	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1544	Payments copy.exe
Token: SeDebugPrivilege	976	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1744	Payments copy.exe

Suspicious use of WriteProcessMemory 37 IoCs

description	pid	Process	procid_target
PID 1544 wrote to memory of 976	1544	Payments copy.exe	27
PID 1544 wrote to memory of 976	1544	Payments copy.exe	27
PID 1544 wrote to memory of 976	1544	Payments copy.exe	27
PID 1544 wrote to memory of 976	1544	Payments copy.exe	27
PID 1544 wrote to memory of 940	1544	Payments copy.exe	29
PID 1544 wrote to memory of 940	1544	Payments copy.exe	29
PID 1544 wrote to memory of 940	1544	Payments copy.exe	29
PID 1544 wrote to memory of 940	1544	Payments copy.exe	29
PID 1544 wrote to memory of 1076	1544	Payments copy.exe	31
PID 1544 wrote to memory of 1076	1544	Payments copy.exe	31
PID 1544 wrote to memory of 1076	1544	Payments copy.exe	31
PID 1544 wrote to memory of 1076	1544	Payments copy.exe	31
PID 1544 wrote to memory of 1964	1544	Payments copy.exe	32
PID 1544 wrote to memory of 1964	1544	Payments copy.exe	32
PID 1544 wrote to memory of 1964	1544	Payments copy.exe	32
PID 1544 wrote to memory of 1964	1544	Payments copy.exe	32
PID 1544 wrote to memory of 1740	1544	Payments copy.exe	33
PID 1544 wrote to memory of 1740	1544	Payments copy.exe	33
PID 1544 wrote to memory of 1740	1544	Payments copy.exe	33
PID 1544 wrote to memory of 1740	1544	Payments copy.exe	33
PID 1544 wrote to memory of 1264	1544	Payments copy.exe	34
PID 1544 wrote to memory of 1264	1544	Payments copy.exe	34
PID 1544 wrote to memory of 1264	1544	Payments copy.exe	34
PID 1544 wrote to memory of 1264	1544	Payments copy.exe	34
PID 1544 wrote to memory of 1744	1544	Payments copy.exe	35
PID 1544 wrote to memory of 1744	1544	Payments copy.exe	35
PID 1544 wrote to memory of 1744	1544	Payments copy.exe	35
PID 1544 wrote to memory of 1744	1544	Payments copy.exe	35
PID 1544 wrote to memory of 1744	1544	Payments copy.exe	35
PID 1544 wrote to memory of 1744	1544	Payments copy.exe	35
PID 1544 wrote to memory of 1744	1544	Payments copy.exe	35
PID 1544 wrote to memory of 1744	1544	Payments copy.exe	35
PID 1544 wrote to memory of 1744	1544	Payments copy.exe	35
PID 1544 wrote to memory of 1744	1544	Payments copy.exe	35
PID 1544 wrote to memory of 1744	1544	Payments copy.exe	35
PID 1544 wrote to memory of 1744	1544	Payments copy.exe	35
PID 1544 wrote to memory of 1744	1544	Payments copy.exe	35

C:\Users\Admin\AppData\Local\Temp\Payments copy.exe
"C:\Users\Admin\AppData\Local\Temp\Payments copy.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1544
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\UcfJDBBf.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:976
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\UcfJDBBf" /XML "C:\Users\Admin\AppData\Local\Temp\tmpBC4E.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:940
- C:\Users\Admin\AppData\Local\Temp\Payments copy.exe
  "C:\Users\Admin\AppData\Local\Temp\Payments copy.exe"
  2⤵
  PID:1076
- C:\Users\Admin\AppData\Local\Temp\Payments copy.exe
  "C:\Users\Admin\AppData\Local\Temp\Payments copy.exe"
  2⤵
  PID:1964
- C:\Users\Admin\AppData\Local\Temp\Payments copy.exe
  "C:\Users\Admin\AppData\Local\Temp\Payments copy.exe"
  2⤵
  PID:1740
- C:\Users\Admin\AppData\Local\Temp\Payments copy.exe
  "C:\Users\Admin\AppData\Local\Temp\Payments copy.exe"
  2⤵
  PID:1264
- C:\Users\Admin\AppData\Local\Temp\Payments copy.exe
  "C:\Users\Admin\AppData\Local\Temp\Payments copy.exe"
  2⤵
  - Suspicious use of SetWindowsHookEx
  PID:1744

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpBC4E.tmp

Filesize
1KB

MD5
42fd2487619a56fd4c9929c27381c83f

SHA1
63838a5587f8dded5b9e6db109140143b755d1d3

SHA256
13011c229ad8551622f1d27fdf2924f20bcd4295220a84bf0c961277754fb56d

SHA512
06818880ef80b399a9639e37c4150043654bb284b6accb71850593f68f594ed75f62d07c695bc2923bfea6ee2bc4e3bab98035dad363c9d507ebafdcaac3ed38

Download Submit
memory/976-83-0x000000006EE40000-0x000000006F3EB000-memory.dmp

Filesize
5.7MB

Download
memory/976-81-0x000000006EE40000-0x000000006F3EB000-memory.dmp

Filesize
5.7MB

Download
memory/1544-54-0x0000000000080000-0x000000000019E000-memory.dmp

Filesize
1.1MB

Download
memory/1544-55-0x0000000076201000-0x0000000076203000-memory.dmp

Filesize
8KB

Download
memory/1544-56-0x0000000000520000-0x000000000053A000-memory.dmp

Filesize
104KB

Download
memory/1544-57-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/1544-58-0x00000000056D0000-0x000000000579A000-memory.dmp

Filesize
808KB

Download
memory/1544-63-0x00000000059D0000-0x0000000005A66000-memory.dmp

Filesize
600KB

Download
memory/1744-69-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1744-67-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1744-70-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1744-71-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1744-72-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1744-74-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1744-76-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1744-80-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1744-65-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1744-82-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1744-64-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1744-84-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download