remcos | 7b15e1604ce98c4e77665aa2e7080b7deb5c92b880dd28c647aa6a12e7fee0b7

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

C2

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

Processes:

Mwqtxjbh.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation Mwqtxjbh.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\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

Processes:

Mwqtxjbh.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Snmqo = "\"C:\\Users\\Admin\\AppData\\Roaming\\Wbnjnlwiifu\\Snmqo.exe\""	Mwqtxjbh.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

Mwqtxjbh.exe

description pid process target process

PID 4972 set thread context of 3324 4972 Mwqtxjbh.exe Mwqtxjbh.exe
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

Processes:

powershell.exe

pid process

4200 powershell.exe
4200 powershell.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

Mwqtxjbh.exepowershell.exe

description pid process

Token: SeDebugPrivilege 4972 Mwqtxjbh.exe
Token: SeDebugPrivilege 4200 powershell.exe

description	pid	process	target process
PID 4972 set thread context of 3324	4972	Mwqtxjbh.exe	Mwqtxjbh.exe

pid	process
4200	powershell.exe
4200	powershell.exe

description	pid	process
Token: SeDebugPrivilege	4972	Mwqtxjbh.exe
Token: SeDebugPrivilege	4200	powershell.exe

Suspicious use of WriteProcessMemory 13 IoCs

Processes:

Mwqtxjbh.exe

description	pid	process	target process
PID 4972 wrote to memory of 4200	4972	Mwqtxjbh.exe	powershell.exe
PID 4972 wrote to memory of 4200	4972	Mwqtxjbh.exe	powershell.exe
PID 4972 wrote to memory of 4200	4972	Mwqtxjbh.exe	powershell.exe
PID 4972 wrote to memory of 3324	4972	Mwqtxjbh.exe	Mwqtxjbh.exe
PID 4972 wrote to memory of 3324	4972	Mwqtxjbh.exe	Mwqtxjbh.exe
PID 4972 wrote to memory of 3324	4972	Mwqtxjbh.exe	Mwqtxjbh.exe
PID 4972 wrote to memory of 3324	4972	Mwqtxjbh.exe	Mwqtxjbh.exe
PID 4972 wrote to memory of 3324	4972	Mwqtxjbh.exe	Mwqtxjbh.exe
PID 4972 wrote to memory of 3324	4972	Mwqtxjbh.exe	Mwqtxjbh.exe
PID 4972 wrote to memory of 3324	4972	Mwqtxjbh.exe	Mwqtxjbh.exe
PID 4972 wrote to memory of 3324	4972	Mwqtxjbh.exe	Mwqtxjbh.exe
PID 4972 wrote to memory of 3324	4972	Mwqtxjbh.exe	Mwqtxjbh.exe
PID 4972 wrote to memory of 3324	4972	Mwqtxjbh.exe	Mwqtxjbh.exe

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:4972

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:4200

C:\Users\Admin\AppData\Local\Temp\Mwqtxjbh.exe
C:\Users\Admin\AppData\Local\Temp\Mwqtxjbh.exe
2⤵
PID:3324

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/3324-142-0x0000000000000000-mapping.dmp

Download
memory/3324-147-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/3324-146-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/3324-145-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/3324-143-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/4200-138-0x0000000005750000-0x00000000057B6000-memory.dmp

Filesize
408KB

Download
memory/4200-139-0x0000000005F00000-0x0000000005F1E000-memory.dmp

Filesize
120KB

Download
memory/4200-140-0x00000000078A0000-0x0000000007F1A000-memory.dmp

Filesize
6.5MB

Download
memory/4200-141-0x00000000063E0000-0x00000000063FA000-memory.dmp

Filesize
104KB

Download
memory/4200-137-0x0000000004FE0000-0x0000000005046000-memory.dmp

Filesize
408KB

Download
memory/4200-136-0x0000000005120000-0x0000000005748000-memory.dmp

Filesize
6.2MB

Download
memory/4200-135-0x00000000025F0000-0x0000000002626000-memory.dmp

Filesize
216KB

Download
memory/4200-134-0x0000000000000000-mapping.dmp

Download
memory/4972-132-0x0000000000CE0000-0x0000000000E18000-memory.dmp

Filesize
1.2MB

Download
memory/4972-133-0x0000000005BA0000-0x0000000005BC2000-memory.dmp

Filesize
136KB

Download

Analysis

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