remcos | f2ab79314469d783c26f6277b3775418a1a4639361dfd96f37933f851838b4f1

General

Target

83347bd76385a61d951f1db9063131d2814b944bea229b8509d2cd89a4dcbb93.exe
Size

1.0MB
MD5

a78ada4f0dd922504d65fb047f24a6e9
SHA1

b554b3d81e133d07571bbc1fc8ea5efd5c1e4bbc
SHA256

83347bd76385a61d951f1db9063131d2814b944bea229b8509d2cd89a4dcbb93
SHA512

fdb9c8686ba93ef8d81c3a57c541a1f3a0942271b8a31254f4070ac07d1c8a6cd3cb9b6b7d51669a7c4a2ea7b3edb65a34a5a953f3a5c942d2b1ccb96ab88a25
SSDEEP

24576:jDRAXOViv4TiGwXnznRO+H1UErIFraisDsi:H8OiGwXjRO2HZZ

Score

10^/10

remcos julito discovery rat

Malware Config

Extracted

Family

remcos

Version

3.1.2 Pro

Botnet

Julito

C2

finalesdejulio2020202020.duckdns.org:2020

Attributes

audio_folder
MicRecords
audio_path
%AppData%
audio_record_time
5
connect_delay
0
connect_interval
1
copy_file
IntelUpdate.exe
copy_folder
Intel
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-QG4917
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
Remcos family
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-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation	83347bd76385a61d951f1db9063131d2814b944bea229b8509d2cd89a4dcbb93.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4200 set thread context of 1436	4200	83347bd76385a61d951f1db9063131d2814b944bea229b8509d2cd89a4dcbb93.exe	102

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	83347bd76385a61d951f1db9063131d2814b944bea229b8509d2cd89a4dcbb93.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegSvcs.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
4060	schtasks.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
4200	83347bd76385a61d951f1db9063131d2814b944bea229b8509d2cd89a4dcbb93.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4200	83347bd76385a61d951f1db9063131d2814b944bea229b8509d2cd89a4dcbb93.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1436	RegSvcs.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 4200 wrote to memory of 4060	4200	83347bd76385a61d951f1db9063131d2814b944bea229b8509d2cd89a4dcbb93.exe	100
PID 4200 wrote to memory of 4060	4200	83347bd76385a61d951f1db9063131d2814b944bea229b8509d2cd89a4dcbb93.exe	100
PID 4200 wrote to memory of 4060	4200	83347bd76385a61d951f1db9063131d2814b944bea229b8509d2cd89a4dcbb93.exe	100
PID 4200 wrote to memory of 1436	4200	83347bd76385a61d951f1db9063131d2814b944bea229b8509d2cd89a4dcbb93.exe	102
PID 4200 wrote to memory of 1436	4200	83347bd76385a61d951f1db9063131d2814b944bea229b8509d2cd89a4dcbb93.exe	102
PID 4200 wrote to memory of 1436	4200	83347bd76385a61d951f1db9063131d2814b944bea229b8509d2cd89a4dcbb93.exe	102
PID 4200 wrote to memory of 1436	4200	83347bd76385a61d951f1db9063131d2814b944bea229b8509d2cd89a4dcbb93.exe	102
PID 4200 wrote to memory of 1436	4200	83347bd76385a61d951f1db9063131d2814b944bea229b8509d2cd89a4dcbb93.exe	102
PID 4200 wrote to memory of 1436	4200	83347bd76385a61d951f1db9063131d2814b944bea229b8509d2cd89a4dcbb93.exe	102
PID 4200 wrote to memory of 1436	4200	83347bd76385a61d951f1db9063131d2814b944bea229b8509d2cd89a4dcbb93.exe	102
PID 4200 wrote to memory of 1436	4200	83347bd76385a61d951f1db9063131d2814b944bea229b8509d2cd89a4dcbb93.exe	102
PID 4200 wrote to memory of 1436	4200	83347bd76385a61d951f1db9063131d2814b944bea229b8509d2cd89a4dcbb93.exe	102
PID 4200 wrote to memory of 1436	4200	83347bd76385a61d951f1db9063131d2814b944bea229b8509d2cd89a4dcbb93.exe	102
PID 4200 wrote to memory of 1436	4200	83347bd76385a61d951f1db9063131d2814b944bea229b8509d2cd89a4dcbb93.exe	102
PID 4200 wrote to memory of 1436	4200	83347bd76385a61d951f1db9063131d2814b944bea229b8509d2cd89a4dcbb93.exe	102

C:\Users\Admin\AppData\Local\Temp\83347bd76385a61d951f1db9063131d2814b944bea229b8509d2cd89a4dcbb93.exe
"C:\Users\Admin\AppData\Local\Temp\83347bd76385a61d951f1db9063131d2814b944bea229b8509d2cd89a4dcbb93.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4200
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\BjWceYheKLX" /XML "C:\Users\Admin\AppData\Local\Temp\tmp3CE5.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:4060
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:1436

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\tmp3CE5.tmp

Filesize
1KB

MD5
47e6510e02af3a9a5a77c0fee167f147

SHA1
fccf45afb66a0244a24b9601f8acc70a14b949b3

SHA256
a57e1f291eb41fc70b9b0690895554406c30f2c0415300fc25d799cf0396821e

SHA512
52f61eb8205698ff77d81ddb32c319076d75eb1b9c3c34a2f475db10bef14141eb30006b976bea12e112e6bb3bccee5982af9bdd057e59fd2e203eda0d053ece

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

Filesize
74B

MD5
e6cb0bdf9818b5e87eb553ff9a19bb9f

SHA1
293efaaf8b0f7877d7f5f8c601d0c7c8b0d46177

SHA256
e47be943dd0bcac653dde6dc5c58f271ced3fd839bfd182d4e794efcdb697643

SHA512
8f055ef05adb47f3e6602b9c19d41632c8c5d90d5412bdf8fb6a91ba0c98ea4d3da25d737fb67a2094b11520a1b07b7780c4968fad731fdae1f1f7cd3d5a93c6

Download Submit
memory/1436-28-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1436-21-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1436-24-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1436-25-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1436-20-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1436-18-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1436-17-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/4200-5-0x0000000004E40000-0x0000000004E4A000-memory.dmp

Filesize
40KB

Download
memory/4200-10-0x0000000007B10000-0x0000000007BEE000-memory.dmp

Filesize
888KB

Download
memory/4200-11-0x00000000077D0000-0x0000000007852000-memory.dmp

Filesize
520KB

Download
memory/4200-9-0x0000000074440000-0x0000000074BF0000-memory.dmp

Filesize
7.7MB

Download
memory/4200-8-0x000000007444E000-0x000000007444F000-memory.dmp

Filesize
4KB

Download
memory/4200-7-0x0000000004FE0000-0x0000000004FF8000-memory.dmp

Filesize
96KB

Download
memory/4200-6-0x0000000074440000-0x0000000074BF0000-memory.dmp

Filesize
7.7MB

Download
memory/4200-26-0x0000000074440000-0x0000000074BF0000-memory.dmp

Filesize
7.7MB

Download
memory/4200-0-0x000000007444E000-0x000000007444F000-memory.dmp

Filesize
4KB

Download
memory/4200-4-0x0000000004F40000-0x0000000004FDC000-memory.dmp

Filesize
624KB

Download
memory/4200-3-0x0000000004D80000-0x0000000004E12000-memory.dmp

Filesize
584KB

Download
memory/4200-2-0x0000000005450000-0x00000000059F4000-memory.dmp

Filesize
5.6MB

Download
memory/4200-1-0x00000000002B0000-0x00000000003C0000-memory.dmp

Filesize
1.1MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads