remcos | da07ea710e848805416f93369b7b6e90d0c1b66cbb80ead60c7d46d6d8efd3be

Analysis

max time kernel
85s
max time network
16s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
16/09/2024, 22:29

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General

Target

$TEMP/paperings.exe
Size

39KB
MD5

f4392de13dfac4aa804152adbd93e793
SHA1

ee90e001945afde21dcd12d542f0eabb9f94f4a6
SHA256

31ae1165f008db6195108f984d3fe495f10c6ac4a5f74bd365102f84b57d9aba
SHA512

40bf82d364c757576c3d7897d6d7413b64089056a8279433b5d5a35ada7a01607754c29678afd9bada5934d49c26f800132d400c864b38234fba4017bcf01de4
SSDEEP

768:5d3r7gefzh645WMbXUcKHBx5BOST/FHPePzaUt8P61t1nVG+:5BrLQeOM2Pgjte+

Score

10^/10

remcos decimo discovery rat

Malware Config

Extracted

Family

remcos

Version

2.5.0 Pro

Botnet

DECIMO

decimoremcdns.duckdns.org:1011

Attributes

audio_folder
MicRecords
audio_path
%AppData%
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
install_path
%AppData%
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
keylog_path
%AppData%
mouse_option
false
mutex
Remcos-EXFS95
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
take_screenshot_title
wikipedia;solitaire;

Signatures

Remcos
Remcos is a closed-source remote control and surveillance software.
rat remcos
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 8 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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	paperings.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2876	paperings.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
2876	paperings.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 2876 wrote to memory of 2684	2876	paperings.exe	30
PID 2876 wrote to memory of 2684	2876	paperings.exe	30
PID 2876 wrote to memory of 2684	2876	paperings.exe	30
PID 2876 wrote to memory of 2684	2876	paperings.exe	30
PID 2876 wrote to memory of 2684	2876	paperings.exe	30
PID 2876 wrote to memory of 2684	2876	paperings.exe	30
PID 2876 wrote to memory of 2684	2876	paperings.exe	30
PID 2876 wrote to memory of 2684	2876	paperings.exe	30
PID 2876 wrote to memory of 2684	2876	paperings.exe	30
PID 2876 wrote to memory of 2684	2876	paperings.exe	30
PID 2876 wrote to memory of 2684	2876	paperings.exe	30
PID 2876 wrote to memory of 2684	2876	paperings.exe	30
PID 2876 wrote to memory of 2684	2876	paperings.exe	30
PID 2876 wrote to memory of 2684	2876	paperings.exe	30
PID 2876 wrote to memory of 2684	2876	paperings.exe	30
PID 2876 wrote to memory of 2684	2876	paperings.exe	30
PID 2876 wrote to memory of 2684	2876	paperings.exe	30
PID 2876 wrote to memory of 2684	2876	paperings.exe	30
PID 2876 wrote to memory of 2684	2876	paperings.exe	30
PID 2876 wrote to memory of 2684	2876	paperings.exe	30
PID 2876 wrote to memory of 2684	2876	paperings.exe	30
PID 2876 wrote to memory of 2684	2876	paperings.exe	30
PID 2876 wrote to memory of 2684	2876	paperings.exe	30
PID 2876 wrote to memory of 2684	2876	paperings.exe	30
PID 2876 wrote to memory of 2684	2876	paperings.exe	30
PID 2876 wrote to memory of 2684	2876	paperings.exe	30
PID 2876 wrote to memory of 2684	2876	paperings.exe	30
PID 2876 wrote to memory of 2684	2876	paperings.exe	30
PID 2876 wrote to memory of 2684	2876	paperings.exe	30
PID 2876 wrote to memory of 2684	2876	paperings.exe	30
PID 2876 wrote to memory of 2684	2876	paperings.exe	30
PID 2876 wrote to memory of 2684	2876	paperings.exe	30
PID 2876 wrote to memory of 2684	2876	paperings.exe	30
PID 2876 wrote to memory of 2684	2876	paperings.exe	30
PID 2876 wrote to memory of 2684	2876	paperings.exe	30
PID 2876 wrote to memory of 2684	2876	paperings.exe	30
PID 2876 wrote to memory of 2684	2876	paperings.exe	30
PID 2876 wrote to memory of 2684	2876	paperings.exe	30
PID 2876 wrote to memory of 2684	2876	paperings.exe	30
PID 2876 wrote to memory of 2684	2876	paperings.exe	30
PID 2876 wrote to memory of 2684	2876	paperings.exe	30
PID 2876 wrote to memory of 2684	2876	paperings.exe	30
PID 2876 wrote to memory of 2684	2876	paperings.exe	30
PID 2876 wrote to memory of 2684	2876	paperings.exe	30
PID 2876 wrote to memory of 2684	2876	paperings.exe	30
PID 2684 wrote to memory of 2612	2684	cmd.exe	31
PID 2684 wrote to memory of 2612	2684	cmd.exe	31
PID 2684 wrote to memory of 2612	2684	cmd.exe	31
PID 2684 wrote to memory of 2612	2684	cmd.exe	31
PID 2684 wrote to memory of 2628	2684	cmd.exe	33
PID 2684 wrote to memory of 2628	2684	cmd.exe	33
PID 2684 wrote to memory of 2628	2684	cmd.exe	33
PID 2684 wrote to memory of 2628	2684	cmd.exe	33
PID 2684 wrote to memory of 2984	2684	cmd.exe	35
PID 2684 wrote to memory of 2984	2684	cmd.exe	35
PID 2684 wrote to memory of 2984	2684	cmd.exe	35
PID 2684 wrote to memory of 2984	2684	cmd.exe	35
PID 2684 wrote to memory of 1244	2684	cmd.exe	37
PID 2684 wrote to memory of 1244	2684	cmd.exe	37
PID 2684 wrote to memory of 1244	2684	cmd.exe	37
PID 2684 wrote to memory of 1244	2684	cmd.exe	37
PID 2684 wrote to memory of 2908	2684	cmd.exe	39
PID 2684 wrote to memory of 2908	2684	cmd.exe	39
PID 2684 wrote to memory of 2908	2684	cmd.exe	39

C:\Users\Admin\AppData\Local\Temp\$TEMP\paperings.exe
"C:\Users\Admin\AppData\Local\Temp\$TEMP\paperings.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:2876
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2684
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c "COPY /Y /B "" "C:\Users\Admin\AppData\Roaming\Media Center Programs\sfc.exe""
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2612
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c "COPY /Y /B "" "C:\Users\Admin\AppData\Roaming\Media Center Programs\sfc.exe""
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2628
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c "COPY /Y /B "" "C:\Users\Admin\AppData\Roaming\Media Center Programs\sfc.exe""
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2984
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c "COPY /Y /B "" "C:\Users\Admin\AppData\Roaming\Media Center Programs\sfc.exe""
    3⤵
    - System Location Discovery: System Language Discovery
    PID:1244
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c "COPY /Y /B "" "C:\Users\Admin\AppData\Roaming\Media Center Programs\sfc.exe""
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2908
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c "COPY /Y /B "" "C:\Users\Admin\AppData\Roaming\Media Center Programs\sfc.exe""
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2624

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/2684-9-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2684-10-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2684-11-0x0000000000090000-0x0000000000096000-memory.dmp

Filesize
24KB

Download
memory/2684-12-0x0000000076E90000-0x0000000077039000-memory.dmp

Filesize
1.7MB

Download
memory/2876-0-0x00000000002E0000-0x00000000002E2000-memory.dmp

Filesize
8KB

Download
memory/2876-1-0x00000000002F0000-0x00000000002FA000-memory.dmp

Filesize
40KB

Download
memory/2876-7-0x0000000076810000-0x0000000076845000-memory.dmp

Filesize
212KB

Download
memory/2876-8-0x0000000076E90000-0x0000000077039000-memory.dmp

Filesize
1.7MB

Download