remcos | da07ea710e848805416f93369b7b6e90d0c1b66cbb80ead60c7d46d6d8efd3be

Analysis

max time kernel
149s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-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

Blocklisted process makes network request 5 IoCs

flow	pid	Process
42	948	cmd.exe
46	948	cmd.exe
47	948	cmd.exe
53	948	cmd.exe
54	948	cmd.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\Windows\Tasks\sfc.job	cmd.exe

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 2 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	paperings.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
3060	paperings.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
3060	paperings.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
948	cmd.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 3060 wrote to memory of 948	3060	paperings.exe	86
PID 3060 wrote to memory of 948	3060	paperings.exe	86
PID 3060 wrote to memory of 948	3060	paperings.exe	86
PID 3060 wrote to memory of 948	3060	paperings.exe	86
PID 3060 wrote to memory of 948	3060	paperings.exe	86
PID 3060 wrote to memory of 948	3060	paperings.exe	86
PID 3060 wrote to memory of 948	3060	paperings.exe	86
PID 3060 wrote to memory of 948	3060	paperings.exe	86
PID 3060 wrote to memory of 948	3060	paperings.exe	86
PID 3060 wrote to memory of 948	3060	paperings.exe	86
PID 3060 wrote to memory of 948	3060	paperings.exe	86
PID 3060 wrote to memory of 948	3060	paperings.exe	86
PID 3060 wrote to memory of 948	3060	paperings.exe	86
PID 3060 wrote to memory of 948	3060	paperings.exe	86
PID 3060 wrote to memory of 948	3060	paperings.exe	86
PID 3060 wrote to memory of 948	3060	paperings.exe	86
PID 3060 wrote to memory of 948	3060	paperings.exe	86
PID 3060 wrote to memory of 948	3060	paperings.exe	86
PID 3060 wrote to memory of 948	3060	paperings.exe	86
PID 3060 wrote to memory of 948	3060	paperings.exe	86
PID 3060 wrote to memory of 948	3060	paperings.exe	86
PID 3060 wrote to memory of 948	3060	paperings.exe	86
PID 3060 wrote to memory of 948	3060	paperings.exe	86
PID 3060 wrote to memory of 948	3060	paperings.exe	86
PID 3060 wrote to memory of 948	3060	paperings.exe	86
PID 3060 wrote to memory of 948	3060	paperings.exe	86
PID 3060 wrote to memory of 948	3060	paperings.exe	86
PID 3060 wrote to memory of 948	3060	paperings.exe	86
PID 3060 wrote to memory of 948	3060	paperings.exe	86
PID 3060 wrote to memory of 948	3060	paperings.exe	86
PID 3060 wrote to memory of 948	3060	paperings.exe	86
PID 3060 wrote to memory of 948	3060	paperings.exe	86
PID 3060 wrote to memory of 948	3060	paperings.exe	86
PID 3060 wrote to memory of 948	3060	paperings.exe	86
PID 3060 wrote to memory of 948	3060	paperings.exe	86
PID 3060 wrote to memory of 948	3060	paperings.exe	86
PID 3060 wrote to memory of 948	3060	paperings.exe	86
PID 3060 wrote to memory of 948	3060	paperings.exe	86
PID 3060 wrote to memory of 948	3060	paperings.exe	86
PID 3060 wrote to memory of 948	3060	paperings.exe	86
PID 3060 wrote to memory of 948	3060	paperings.exe	86
PID 3060 wrote to memory of 948	3060	paperings.exe	86
PID 3060 wrote to memory of 948	3060	paperings.exe	86
PID 3060 wrote to memory of 948	3060	paperings.exe	86
PID 3060 wrote to memory of 948	3060	paperings.exe	86
PID 3060 wrote to memory of 948	3060	paperings.exe	86
PID 3060 wrote to memory of 948	3060	paperings.exe	86
PID 3060 wrote to memory of 948	3060	paperings.exe	86
PID 3060 wrote to memory of 948	3060	paperings.exe	86
PID 3060 wrote to memory of 948	3060	paperings.exe	86
PID 3060 wrote to memory of 948	3060	paperings.exe	86
PID 3060 wrote to memory of 948	3060	paperings.exe	86
PID 3060 wrote to memory of 948	3060	paperings.exe	86
PID 3060 wrote to memory of 948	3060	paperings.exe	86
PID 3060 wrote to memory of 948	3060	paperings.exe	86
PID 3060 wrote to memory of 948	3060	paperings.exe	86
PID 3060 wrote to memory of 948	3060	paperings.exe	86
PID 3060 wrote to memory of 948	3060	paperings.exe	86
PID 3060 wrote to memory of 948	3060	paperings.exe	86
PID 3060 wrote to memory of 948	3060	paperings.exe	86
PID 3060 wrote to memory of 948	3060	paperings.exe	86
PID 3060 wrote to memory of 948	3060	paperings.exe	86
PID 3060 wrote to memory of 948	3060	paperings.exe	86
PID 3060 wrote to memory of 948	3060	paperings.exe	86

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:3060
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe"
  2⤵
  - Blocklisted process makes network request
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:948

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

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Downloads

C:\Users\Admin\AppData\Roaming\remcos\logs.dat

Filesize
74B

MD5
673209c4d04c2df9083b479dd4cf9b83

SHA1
9e0ad59b395a3d0561b9f19f93afc12bdc03eb15

SHA256
ccebde1dfaae89fecb33de5f5a68802c3bbee35896089c4565cbc34079862141

SHA512
acbc2e4af1184419e1f6756d41e5c9c676f08ce25b685977c45283e7923bdb054f78626330abd2f981e418562033c7b96906bb8ba832dbb5b94be2eeaf5ffb14

Download Submit
memory/948-9-0x0000000077618000-0x0000000077619000-memory.dmp

Filesize
4KB

Download
memory/948-8-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/948-10-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/948-11-0x0000000000B60000-0x0000000000B66000-memory.dmp

Filesize
24KB

Download
memory/948-14-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/948-15-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/948-18-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/948-20-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/3060-0-0x0000000002180000-0x0000000002182000-memory.dmp

Filesize
8KB

Download
memory/3060-1-0x0000000002190000-0x000000000219A000-memory.dmp

Filesize
40KB

Download
memory/3060-7-0x0000000075820000-0x0000000075883000-memory.dmp

Filesize
396KB

Download