remcos | 14fa988747a313c09bbc60596d4262c1a8bd653cf982acc836b056d545323e66

Analysis

max time kernel
149s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
08-10-2024 12:48

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General

Target

2i8muV3YUdasYZi.exe
Size

957KB
MD5

503634aab271a373dc2aa561c3f41c9f
SHA1

5a69b7351c1ab3b10f440e8e4f85476269e908d8
SHA256

e91003d89bef3f5c6bdfb6a554ca0cf7e05d209cf0184cb545f84ce1a3d04159
SHA512

8e59d88e95b7f601224dbc8d3b8a3c06eb899ec96d6c84479e3c618173d3e14e2f691c908f530447d87c7e17dbbad1ce259f579401272b77b84bbdaddb234697
SSDEEP

24576:Mq6EOjecgRrD6qTc8ZNUgJbejCwJsKx7X:MqtO6VDy8TUljxqKxT

Score

10^/10

remcos splendid discovery execution rat

Malware Config

Extracted

Family

remcos

Botnet

splendid

wasxc.ddns.net:5809

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-GQQEAY
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

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

pid	Process
1756	powershell.exe

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	2i8muV3YUdasYZi.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4376 set thread context of 1388	4376	2i8muV3YUdasYZi.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	2i8muV3YUdasYZi.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2i8muV3YUdasYZi.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4376	2i8muV3YUdasYZi.exe
4376	2i8muV3YUdasYZi.exe
1756	powershell.exe
1756	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4376	2i8muV3YUdasYZi.exe
Token: SeDebugPrivilege	1756	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1388	2i8muV3YUdasYZi.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 4376 wrote to memory of 1756	4376	2i8muV3YUdasYZi.exe	90
PID 4376 wrote to memory of 1756	4376	2i8muV3YUdasYZi.exe	90
PID 4376 wrote to memory of 1756	4376	2i8muV3YUdasYZi.exe	90
PID 4376 wrote to memory of 3412	4376	2i8muV3YUdasYZi.exe	92
PID 4376 wrote to memory of 3412	4376	2i8muV3YUdasYZi.exe	92
PID 4376 wrote to memory of 3412	4376	2i8muV3YUdasYZi.exe	92
PID 4376 wrote to memory of 1388	4376	2i8muV3YUdasYZi.exe	93
PID 4376 wrote to memory of 1388	4376	2i8muV3YUdasYZi.exe	93
PID 4376 wrote to memory of 1388	4376	2i8muV3YUdasYZi.exe	93
PID 4376 wrote to memory of 1388	4376	2i8muV3YUdasYZi.exe	93
PID 4376 wrote to memory of 1388	4376	2i8muV3YUdasYZi.exe	93
PID 4376 wrote to memory of 1388	4376	2i8muV3YUdasYZi.exe	93
PID 4376 wrote to memory of 1388	4376	2i8muV3YUdasYZi.exe	93
PID 4376 wrote to memory of 1388	4376	2i8muV3YUdasYZi.exe	93
PID 4376 wrote to memory of 1388	4376	2i8muV3YUdasYZi.exe	93
PID 4376 wrote to memory of 1388	4376	2i8muV3YUdasYZi.exe	93
PID 4376 wrote to memory of 1388	4376	2i8muV3YUdasYZi.exe	93
PID 4376 wrote to memory of 1388	4376	2i8muV3YUdasYZi.exe	93

C:\Users\Admin\AppData\Local\Temp\2i8muV3YUdasYZi.exe
"C:\Users\Admin\AppData\Local\Temp\2i8muV3YUdasYZi.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:4376
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\2i8muV3YUdasYZi.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1756
- C:\Users\Admin\AppData\Local\Temp\2i8muV3YUdasYZi.exe
  "C:\Users\Admin\AppData\Local\Temp\2i8muV3YUdasYZi.exe"
  2⤵
  PID:3412
- C:\Users\Admin\AppData\Local\Temp\2i8muV3YUdasYZi.exe
  "C:\Users\Admin\AppData\Local\Temp\2i8muV3YUdasYZi.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:1388

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\ProgramData\remcos\logs.dat

Filesize
144B

MD5
f1764b650b82bf3696d715e3a0aee4c0

SHA1
e37be720b10076f9223dc0238b2db356acc1cbe2

SHA256
ef9ae98c062f11ec2db432759e4b0907e3f5695cc2ca566b40ea0c369d4dd4d6

SHA512
4e4f9faa06f862742dbbe04c285d80cdaa31b5a865aca5fa6dc5a41b83d53288fba614682a2e753dc3aa7344c589df2e9779a478bd05830d0bea06263fb0f556

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_kd5gtx51.cai.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1388-73-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1388-12-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1388-91-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1388-83-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1388-82-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1388-98-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1388-75-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1388-74-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1388-26-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1388-90-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1388-14-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1388-11-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1388-99-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1388-15-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1388-18-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1388-19-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1388-21-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1388-28-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1388-25-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1756-34-0x00000000055B0000-0x0000000005616000-memory.dmp

Filesize
408KB

Download
memory/1756-62-0x0000000006FD0000-0x0000000006FDA000-memory.dmp

Filesize
40KB

Download
memory/1756-24-0x0000000074510000-0x0000000074CC0000-memory.dmp

Filesize
7.7MB

Download
memory/1756-27-0x0000000074510000-0x0000000074CC0000-memory.dmp

Filesize
7.7MB

Download
memory/1756-22-0x000000007451E000-0x000000007451F000-memory.dmp

Filesize
4KB

Download
memory/1756-31-0x0000000004E60000-0x0000000005488000-memory.dmp

Filesize
6.2MB

Download
memory/1756-32-0x0000000004CB0000-0x0000000004CD2000-memory.dmp

Filesize
136KB

Download
memory/1756-71-0x0000000074510000-0x0000000074CC0000-memory.dmp

Filesize
7.7MB

Download
memory/1756-33-0x0000000005490000-0x00000000054F6000-memory.dmp

Filesize
408KB

Download
memory/1756-68-0x0000000007280000-0x0000000007288000-memory.dmp

Filesize
32KB

Download
memory/1756-44-0x0000000005620000-0x0000000005974000-memory.dmp

Filesize
3.3MB

Download
memory/1756-45-0x0000000005C20000-0x0000000005C3E000-memory.dmp

Filesize
120KB

Download
memory/1756-46-0x0000000005CD0000-0x0000000005D1C000-memory.dmp

Filesize
304KB

Download
memory/1756-47-0x0000000006200000-0x0000000006232000-memory.dmp

Filesize
200KB

Download
memory/1756-48-0x00000000701F0000-0x000000007023C000-memory.dmp

Filesize
304KB

Download
memory/1756-58-0x0000000006E00000-0x0000000006E1E000-memory.dmp

Filesize
120KB

Download
memory/1756-59-0x0000000006E20000-0x0000000006EC3000-memory.dmp

Filesize
652KB

Download
memory/1756-60-0x00000000075A0000-0x0000000007C1A000-memory.dmp

Filesize
6.5MB

Download
memory/1756-61-0x0000000006F60000-0x0000000006F7A000-memory.dmp

Filesize
104KB

Download
memory/1756-23-0x0000000002370000-0x00000000023A6000-memory.dmp

Filesize
216KB

Download
memory/1756-63-0x00000000071E0000-0x0000000007276000-memory.dmp

Filesize
600KB

Download
memory/1756-64-0x0000000007160000-0x0000000007171000-memory.dmp

Filesize
68KB

Download
memory/1756-65-0x0000000007190000-0x000000000719E000-memory.dmp

Filesize
56KB

Download
memory/1756-66-0x00000000071A0000-0x00000000071B4000-memory.dmp

Filesize
80KB

Download
memory/1756-67-0x00000000072A0000-0x00000000072BA000-memory.dmp

Filesize
104KB

Download
memory/4376-20-0x0000000074550000-0x0000000074D00000-memory.dmp

Filesize
7.7MB

Download
memory/4376-0-0x000000007455E000-0x000000007455F000-memory.dmp

Filesize
4KB

Download
memory/4376-10-0x00000000063E0000-0x000000000647C000-memory.dmp

Filesize
624KB

Download
memory/4376-9-0x0000000006140000-0x0000000006200000-memory.dmp

Filesize
768KB

Download
memory/4376-8-0x0000000074550000-0x0000000074D00000-memory.dmp

Filesize
7.7MB

Download
memory/4376-7-0x000000007455E000-0x000000007455F000-memory.dmp

Filesize
4KB

Download
memory/4376-6-0x0000000004FD0000-0x0000000004FE8000-memory.dmp

Filesize
96KB

Download
memory/4376-5-0x0000000074550000-0x0000000074D00000-memory.dmp

Filesize
7.7MB

Download
memory/4376-4-0x0000000004CA0000-0x0000000004CAA000-memory.dmp

Filesize
40KB

Download
memory/4376-3-0x0000000004AE0000-0x0000000004B72000-memory.dmp

Filesize
584KB

Download
memory/4376-2-0x0000000004FF0000-0x0000000005594000-memory.dmp

Filesize
5.6MB

Download
memory/4376-1-0x0000000000140000-0x0000000000232000-memory.dmp

Filesize
968KB

Download