remcos | 1a42950011efa48efad99c53904d84f0d89ee37077edce320f9781a68cfa9c4f

Analysis

max time kernel
148s
max time network
159s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
03/02/2023, 18:30

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General

Target

Mwqtxjbh.exe
Size

1.2MB
MD5

ecaf214bde2e9e856ff914ff601323eb
SHA1

b20382c8f2337277c3467b07f395cda96827f497
SHA256

1a42950011efa48efad99c53904d84f0d89ee37077edce320f9781a68cfa9c4f
SHA512

fe6de7336f518c0826b2fcf2769a2639c57a3efd43f8d7a1b572229ebe234cb21199e7c973b301c47d48715926c46db0a8d3197fe680e5fd67295aae907efcac
SSDEEP

24576:TLz3VowLzh0xOxua+8uTUcQTWTbh9/+rHZ8zZQ6gqtQkBMATHXUelVE6:jVzl453DXQTZre9QRqtNRX7

Score

10^/10

remcos mimiboy persistence rat

Malware Config

Extracted

Family

remcos

Version

2.7.1 Pro

Botnet

MIMIBOY

91.231.84.41:52651

127.0.0.1:52651

10.5.175.21:52651

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-SURYWD
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-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation	Mwqtxjbh.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Snmqo = "\"C:\\Users\\Admin\\AppData\\Roaming\\Wbnjnlwiifu\\Snmqo.exe\""	Mwqtxjbh.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 892 set thread context of 2188	892	Mwqtxjbh.exe	87

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3740	powershell.exe
3740	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	892	Mwqtxjbh.exe
Token: SeDebugPrivilege	3740	powershell.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 892 wrote to memory of 3740	892	Mwqtxjbh.exe	77
PID 892 wrote to memory of 3740	892	Mwqtxjbh.exe	77
PID 892 wrote to memory of 3740	892	Mwqtxjbh.exe	77
PID 892 wrote to memory of 2188	892	Mwqtxjbh.exe	87
PID 892 wrote to memory of 2188	892	Mwqtxjbh.exe	87
PID 892 wrote to memory of 2188	892	Mwqtxjbh.exe	87
PID 892 wrote to memory of 2188	892	Mwqtxjbh.exe	87
PID 892 wrote to memory of 2188	892	Mwqtxjbh.exe	87
PID 892 wrote to memory of 2188	892	Mwqtxjbh.exe	87
PID 892 wrote to memory of 2188	892	Mwqtxjbh.exe	87
PID 892 wrote to memory of 2188	892	Mwqtxjbh.exe	87
PID 892 wrote to memory of 2188	892	Mwqtxjbh.exe	87
PID 892 wrote to memory of 2188	892	Mwqtxjbh.exe	87

C:\Users\Admin\AppData\Local\Temp\Mwqtxjbh.exe
"C:\Users\Admin\AppData\Local\Temp\Mwqtxjbh.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:892
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ENC cwB0AGEAcgB0AC0AcwBsAGUAZQBwACAALQBzAGUAYwBvAG4AZABzACAAMgAwAA==
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3740
- C:\Users\Admin\AppData\Local\Temp\Mwqtxjbh.exe
  C:\Users\Admin\AppData\Local\Temp\Mwqtxjbh.exe
  2⤵
  PID:2188

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/892-132-0x00000000007F0000-0x0000000000928000-memory.dmp

Filesize
1.2MB

Download
memory/892-133-0x00000000056B0000-0x00000000056D2000-memory.dmp

Filesize
136KB

Download
memory/2188-146-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2188-145-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2188-143-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/3740-138-0x0000000005C30000-0x0000000005C96000-memory.dmp

Filesize
408KB

Download
memory/3740-139-0x0000000006290000-0x00000000062AE000-memory.dmp

Filesize
120KB

Download
memory/3740-140-0x0000000007900000-0x0000000007F7A000-memory.dmp

Filesize
6.5MB

Download
memory/3740-141-0x0000000006790000-0x00000000067AA000-memory.dmp

Filesize
104KB

Download
memory/3740-137-0x00000000053D0000-0x0000000005436000-memory.dmp

Filesize
408KB

Download
memory/3740-136-0x0000000005450000-0x0000000005A78000-memory.dmp

Filesize
6.2MB

Download
memory/3740-135-0x0000000004CE0000-0x0000000004D16000-memory.dmp

Filesize
216KB

Download