remcos | dada920f3fa567ecbe4781a9e7e4237694e3b21ecc14ac0503c7a528aca1a78c

General

Target

RETURNED PAYMENT.exe
Size

866KB
MD5

0e8d35f26c96b113928840357f4788d5
SHA1

5033be8a563df919390cfa01e556f671068c9001
SHA256

34d3c312a8cb63c3e7be469f70ec3270b66c7d47cb38ed63a87e27ac1fd9c440
SHA512

998a9a570298332ae09d03f6867bc1b4546da6437b33b252ccbd26ec8a2abd16dc09ac7a933900d3233e71e710ba4bd2c153a789b3eb91231a750518ce63a565
SSDEEP

12288:SgVK7c/UrwH77vvgdLZnHVY5peqDyo+TxG2sxVMbmf9y5o4:SizbjveZnHVK/Dyo+TY4blP

Score

10^/10

remcos tips discovery rat

Malware Config

Extracted

Family

remcos

Version

2.7.2 Pro

Botnet

tips

C2

185.140.53.148:1011

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-OZF05G
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

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-1-5-21-2718105630-359604950-2820636825-1000\Control Panel\International\Geo\Nation	RETURNED PAYMENT.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4668 set thread context of 804	4668	RETURNED PAYMENT.exe	93

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	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RETURNED PAYMENT.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RETURNED PAYMENT.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

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

persistence execution

Scheduled Task

T1053.005

pid	Process
4000	schtasks.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
804	RETURNED PAYMENT.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 4668 wrote to memory of 4000	4668	RETURNED PAYMENT.exe	91
PID 4668 wrote to memory of 4000	4668	RETURNED PAYMENT.exe	91
PID 4668 wrote to memory of 4000	4668	RETURNED PAYMENT.exe	91
PID 4668 wrote to memory of 804	4668	RETURNED PAYMENT.exe	93
PID 4668 wrote to memory of 804	4668	RETURNED PAYMENT.exe	93
PID 4668 wrote to memory of 804	4668	RETURNED PAYMENT.exe	93
PID 4668 wrote to memory of 804	4668	RETURNED PAYMENT.exe	93
PID 4668 wrote to memory of 804	4668	RETURNED PAYMENT.exe	93
PID 4668 wrote to memory of 804	4668	RETURNED PAYMENT.exe	93
PID 4668 wrote to memory of 804	4668	RETURNED PAYMENT.exe	93
PID 4668 wrote to memory of 804	4668	RETURNED PAYMENT.exe	93
PID 4668 wrote to memory of 804	4668	RETURNED PAYMENT.exe	93
PID 4668 wrote to memory of 804	4668	RETURNED PAYMENT.exe	93

C:\Users\Admin\AppData\Local\Temp\RETURNED PAYMENT.exe
"C:\Users\Admin\AppData\Local\Temp\RETURNED PAYMENT.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4668
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\glsofWVaFVnYx" /XML "C:\Users\Admin\AppData\Local\Temp\tmp86DE.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:4000
- C:\Users\Admin\AppData\Local\Temp\RETURNED PAYMENT.exe
  "C:\Users\Admin\AppData\Local\Temp\RETURNED PAYMENT.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:804

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp86DE.tmp

Filesize
1KB

MD5
7df04a522a16ea6266103d8aa254d1c1

SHA1
6700a70ed079bdabde099ddea461f53296fdedeb

SHA256
0ec2b70f69155f0cb8a9d3ed0f60524a2892dbcbc59b05a0d42018c35d73802c

SHA512
3cde93dd08a8e2570adbb1a57d1b3e360ccbbd803074a11bfc74dab5d09ee43bb194b839e9f9df55346e1996c5a61629f5754895eeb0ccbeb1d0b241531259c5

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

Filesize
74B

MD5
ef97eb14b19db3159896885f0e1662c4

SHA1
07395fbbcc3b8977aad8b7873722d102ce510601

SHA256
2ebcadfa202f99786ceaebec2385dab89fad0752cebcf493414ef648a4819e6d

SHA512
294548387788058fb54da7c58f68b460fea05042aea2ed7637ad0c7052caf0affa92db6f4c1302e913dc80b5028d2dea471919263e0abd44a93079086c2c0f56

Download Submit
memory/804-28-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/804-21-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/804-24-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/804-25-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/804-20-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/804-17-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/4668-5-0x0000000005950000-0x000000000595A000-memory.dmp

Filesize
40KB

Download
memory/4668-9-0x000000007525E000-0x000000007525F000-memory.dmp

Filesize
4KB

Download
memory/4668-10-0x0000000075250000-0x0000000075A00000-memory.dmp

Filesize
7.7MB

Download
memory/4668-11-0x0000000006830000-0x000000000688C000-memory.dmp

Filesize
368KB

Download
memory/4668-8-0x00000000059A0000-0x00000000059AA000-memory.dmp

Filesize
40KB

Download
memory/4668-7-0x0000000005B80000-0x0000000005BD6000-memory.dmp

Filesize
344KB

Download
memory/4668-6-0x0000000075250000-0x0000000075A00000-memory.dmp

Filesize
7.7MB

Download
memory/4668-0-0x000000007525E000-0x000000007525F000-memory.dmp

Filesize
4KB

Download
memory/4668-4-0x00000000059C0000-0x0000000005A52000-memory.dmp

Filesize
584KB

Download
memory/4668-3-0x0000000005ED0000-0x0000000006474000-memory.dmp

Filesize
5.6MB

Download
memory/4668-26-0x0000000075250000-0x0000000075A00000-memory.dmp

Filesize
7.7MB

Download
memory/4668-2-0x0000000005880000-0x000000000591C000-memory.dmp

Filesize
624KB

Download
memory/4668-1-0x0000000000E20000-0x0000000000EFE000-memory.dmp

Filesize
888KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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