remcos | 0c31fc86850da72595f728c90d79881a5e8e8c80369bd5e9e4a16f73f6c15396

General

Target

RFQ_Order.exe
Size

1.5MB
MD5

58a530e3f4d17e572a11f69a7caca700
SHA1

4613d307a37656ecaf8ee873abdf92b188d091dd
SHA256

0c31fc86850da72595f728c90d79881a5e8e8c80369bd5e9e4a16f73f6c15396
SHA512

2eb97f9bf5305bf2b135717c4cf0f7876b655adcce618d51f5f1420ff3c4367b6ce067d9e5f58e41c76ff9e2ead296cf29eacadac56a83024e9aba985e8a62b5
SSDEEP

24576:uaKhdf/xIM1PDH6s5KIJXLzHh8Y6b0uvyl9QtfPiS+YiCKPPRZ5bKJ0t:FmXuMXLtPSjalmyS7iDKE

Score

10^/10

remcos remotehost evasion execution rat trojan

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

185.29.9.103:2404

Attributes

audio_folder
MicRecords
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
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
mouse_option
false
mutex
Rmc-GCWMZ9
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
take_screenshot_option
false
take_screenshot_time
5

Signatures

Remcos
Remcos is a closed-source remote control and surveillance software.
rat remcos
UAC bypass 3 TTPs 1 IoCs
evasion trojan

Bypass User Account Control
T1548.002

Disable or Modify Tools
T1562.001

Modify Registry
T1112

Processes:

RFQ_Order.exe

description ioc process

Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" RFQ_Order.exe
Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs
Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.
execution

PowerShell
T1059.001

Processes:

powershell.exe

pid process

2284 powershell.exe

pid	process
2284	powershell.exe

Checks whether UAC is enabled 1 TTPs 2 IoCs

evasion trojan

System Information Discovery

T1082

Processes:

RFQ_Order.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	RFQ_Order.exe
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	RFQ_Order.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

RFQ_Order.exe

description pid process target process

PID 2984 set thread context of 1928 2984 RFQ_Order.exe wab.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

powershell.exe

pid process

2284 powershell.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

powershell.exe

description pid process

Token: SeDebugPrivilege 2284 powershell.exe

description	pid	process	target process
PID 2984 set thread context of 1928	2984	RFQ_Order.exe	wab.exe

pid	process
2284	powershell.exe

description	pid	process
Token: SeDebugPrivilege	2284	powershell.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

RFQ_Order.exe

description	pid	process	target process
PID 2984 wrote to memory of 2284	2984	RFQ_Order.exe	powershell.exe
PID 2984 wrote to memory of 2284	2984	RFQ_Order.exe	powershell.exe
PID 2984 wrote to memory of 2284	2984	RFQ_Order.exe	powershell.exe
PID 2984 wrote to memory of 2656	2984	RFQ_Order.exe	notepad.exe
PID 2984 wrote to memory of 2656	2984	RFQ_Order.exe	notepad.exe
PID 2984 wrote to memory of 2656	2984	RFQ_Order.exe	notepad.exe
PID 2984 wrote to memory of 2656	2984	RFQ_Order.exe	notepad.exe
PID 2984 wrote to memory of 2656	2984	RFQ_Order.exe	notepad.exe
PID 2984 wrote to memory of 2656	2984	RFQ_Order.exe	notepad.exe
PID 2984 wrote to memory of 2656	2984	RFQ_Order.exe	notepad.exe
PID 2984 wrote to memory of 2656	2984	RFQ_Order.exe	notepad.exe
PID 2984 wrote to memory of 2656	2984	RFQ_Order.exe	notepad.exe
PID 2984 wrote to memory of 2656	2984	RFQ_Order.exe	notepad.exe
PID 2984 wrote to memory of 2656	2984	RFQ_Order.exe	notepad.exe
PID 2984 wrote to memory of 1928	2984	RFQ_Order.exe	wab.exe
PID 2984 wrote to memory of 1928	2984	RFQ_Order.exe	wab.exe
PID 2984 wrote to memory of 1928	2984	RFQ_Order.exe	wab.exe
PID 2984 wrote to memory of 1928	2984	RFQ_Order.exe	wab.exe
PID 2984 wrote to memory of 1928	2984	RFQ_Order.exe	wab.exe
PID 2984 wrote to memory of 1928	2984	RFQ_Order.exe	wab.exe
PID 2984 wrote to memory of 1928	2984	RFQ_Order.exe	wab.exe
PID 2984 wrote to memory of 1928	2984	RFQ_Order.exe	wab.exe
PID 2984 wrote to memory of 1928	2984	RFQ_Order.exe	wab.exe
PID 2984 wrote to memory of 1928	2984	RFQ_Order.exe	wab.exe
PID 2984 wrote to memory of 1928	2984	RFQ_Order.exe	wab.exe
PID 2984 wrote to memory of 1928	2984	RFQ_Order.exe	wab.exe
PID 2984 wrote to memory of 1928	2984	RFQ_Order.exe	wab.exe
PID 2984 wrote to memory of 2020	2984	RFQ_Order.exe	WerFault.exe
PID 2984 wrote to memory of 2020	2984	RFQ_Order.exe	WerFault.exe
PID 2984 wrote to memory of 2020	2984	RFQ_Order.exe	WerFault.exe

System policy modification 1 TTPs 1 IoCs
evasion

Modify Registry
T1112

Processes:

RFQ_Order.exe

description ioc process

Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" RFQ_Order.exe

C:\Users\Admin\AppData\Local\Temp\RFQ_Order.exe
"C:\Users\Admin\AppData\Local\Temp\RFQ_Order.exe"
1⤵
- UAC bypass
- Checks whether UAC is enabled
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
- System policy modification
PID:2984

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\RFQ_Order.exe" -Force
2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2284

C:\Windows\System32\notepad.exe
"C:\Windows\System32\notepad.exe"
2⤵
PID:2656

C:\Program Files (x86)\Windows Mail\wab.exe
"C:\Program Files (x86)\Windows Mail\wab.exe"
2⤵
PID:1928

C:\Windows\system32\WerFault.exe
C:\Windows\system32\WerFault.exe -u -p 2984 -s 780
2⤵
PID:2020

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Persistence

Privilege Escalation

Abuse Elevation Control Mechanism

1

T1548

Bypass User Account Control

1

T1548.002

Defense Evasion

Abuse Elevation Control Mechanism

1

T1548

Bypass User Account Control

1

T1548.002

Impair Defenses

1

T1562

Disable or Modify Tools

Modify Registry

Credential Access

Discovery

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

memory/1928-47-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1928-48-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1928-41-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1928-59-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1928-60-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1928-58-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1928-57-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1928-35-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1928-56-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1928-55-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1928-54-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1928-49-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1928-38-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1928-43-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1928-40-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1928-36-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2284-22-0x000000001B6E0000-0x000000001B9C2000-memory.dmp

Filesize
2.9MB

Download
memory/2284-23-0x0000000001F40000-0x0000000001F48000-memory.dmp

Filesize
32KB

Download
memory/2284-34-0x000007FEEE580000-0x000007FEEEF1D000-memory.dmp

Filesize
9.6MB

Download
memory/2284-21-0x000007FEEE83E000-0x000007FEEE83F000-memory.dmp

Filesize
4KB

Download
memory/2284-45-0x0000000002D30000-0x0000000002DB0000-memory.dmp

Filesize
512KB

Download
memory/2284-44-0x0000000002D30000-0x0000000002DB0000-memory.dmp

Filesize
512KB

Download
memory/2284-42-0x000007FEEE580000-0x000007FEEEF1D000-memory.dmp

Filesize
9.6MB

Download
memory/2284-46-0x000007FEEE580000-0x000007FEEEF1D000-memory.dmp

Filesize
9.6MB

Download
memory/2284-39-0x000007FEEE580000-0x000007FEEEF1D000-memory.dmp

Filesize
9.6MB

Download
memory/2656-13-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2656-14-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2656-7-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2656-12-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2656-9-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2656-16-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2656-11-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2656-15-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2984-53-0x000007FEF5A20000-0x000007FEF640C000-memory.dmp

Filesize
9.9MB

Download
memory/2984-2-0x000007FEF5A20000-0x000007FEF640C000-memory.dmp

Filesize
9.9MB

Download
memory/2984-52-0x000007FEF5A23000-0x000007FEF5A24000-memory.dmp

Filesize
4KB

Download
memory/2984-1-0x0000000000240000-0x000000000024A000-memory.dmp

Filesize
40KB

Download
memory/2984-0-0x000007FEF5A23000-0x000007FEF5A24000-memory.dmp

Filesize
4KB

Download
memory/2984-6-0x000000001AD90000-0x000000001AE62000-memory.dmp

Filesize
840KB

Download
memory/2984-5-0x000007FEF5A20000-0x000007FEF640C000-memory.dmp

Filesize
9.9MB

Download
memory/2984-3-0x000007FEF5A20000-0x000007FEF640C000-memory.dmp

Filesize
9.9MB

Download
memory/2984-4-0x000007FEF5A20000-0x000007FEF640C000-memory.dmp

Filesize
9.9MB

Download

Analysis

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