remcos | d7b82542403c06b63adcd6c4a46614ebc04d903c9c404097d30cc85e0237c2bc

Analysis

max time kernel
147s
max time network
147s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
24-09-2024 19:40

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General

Target

PO904321.exe
Size

881KB
MD5

a1b7c41a0ef9eb2af3337a97127329d9
SHA1

c94ffbdc29ab82e90b704e33838a1ea6af3cf14a
SHA256

d7b82542403c06b63adcd6c4a46614ebc04d903c9c404097d30cc85e0237c2bc
SHA512

4cd922ffff1940fdea5350b98a54954970f200c3a5c23c2117f8cbcf48bf389c170506b9760b949357d378734e60634512a2801f9a37512f7cf6f12a97147e1e
SSDEEP

24576:5rEmwPVpOaOXAHs2NAZZHy0SUAP2F/cvn:SZtpxOl2NAZ5fD/

Score

10^/10

remcos mekus discovery execution rat

Malware Config

Extracted

Family

remcos

Botnet

mekus

dpm-sael.com:2017

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
meckus-ODY51K
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 2 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
1980	powershell.exe
4348	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-1-5-21-1302416131-1437503476-2806442725-1000\Control Panel\International\Geo\Nation	PO904321.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4664 set thread context of 1776	4664	PO904321.exe	95

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 5 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	PO904321.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PO904321.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.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
1960	schtasks.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1980	powershell.exe
4348	powershell.exe
1980	powershell.exe
4348	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1980	powershell.exe
Token: SeDebugPrivilege	4348	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1776	PO904321.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 4664 wrote to memory of 1980	4664	PO904321.exe	87
PID 4664 wrote to memory of 1980	4664	PO904321.exe	87
PID 4664 wrote to memory of 1980	4664	PO904321.exe	87
PID 4664 wrote to memory of 4348	4664	PO904321.exe	89
PID 4664 wrote to memory of 4348	4664	PO904321.exe	89
PID 4664 wrote to memory of 4348	4664	PO904321.exe	89
PID 4664 wrote to memory of 1960	4664	PO904321.exe	91
PID 4664 wrote to memory of 1960	4664	PO904321.exe	91
PID 4664 wrote to memory of 1960	4664	PO904321.exe	91
PID 4664 wrote to memory of 1776	4664	PO904321.exe	95
PID 4664 wrote to memory of 1776	4664	PO904321.exe	95
PID 4664 wrote to memory of 1776	4664	PO904321.exe	95
PID 4664 wrote to memory of 1776	4664	PO904321.exe	95
PID 4664 wrote to memory of 1776	4664	PO904321.exe	95
PID 4664 wrote to memory of 1776	4664	PO904321.exe	95
PID 4664 wrote to memory of 1776	4664	PO904321.exe	95
PID 4664 wrote to memory of 1776	4664	PO904321.exe	95
PID 4664 wrote to memory of 1776	4664	PO904321.exe	95
PID 4664 wrote to memory of 1776	4664	PO904321.exe	95
PID 4664 wrote to memory of 1776	4664	PO904321.exe	95
PID 4664 wrote to memory of 1776	4664	PO904321.exe	95

C:\Users\Admin\AppData\Local\Temp\PO904321.exe
"C:\Users\Admin\AppData\Local\Temp\PO904321.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4664
- 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\PO904321.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1980
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\rxoPEmTYk.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4348
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\rxoPEmTYk" /XML "C:\Users\Admin\AppData\Local\Temp\tmpA72D.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:1960
- C:\Users\Admin\AppData\Local\Temp\PO904321.exe
  "C:\Users\Admin\AppData\Local\Temp\PO904321.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:1776

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

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
77f02a5a4f34bbbfa97ffb9d2428662d

SHA1
1fea647d5d9f1b42facfe13ec7b72f63a4739fb6

SHA256
c92a6f046b239809cd6ee2a902911dbd023e9049d096744b6023edcc8d9f2137

SHA512
8b62bb2e430e73efefadfb101ea85883bea16ca3c7583d82015f8b4e557d330d88a93ed6582ef2fadfdf81c4c2b5c429797c8061d34cf95820e41e5b6f8c039f

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log

Filesize
2KB

MD5
3d086a433708053f9bf9523e1d87a4e8

SHA1
b3ab5d4f282a4c8fe8c3005b8a557ed5a0e37f28

SHA256
6f8fd1b8d9788ad54eaeee329232187e24b7b43393a01aeba2d6e9675231fb69

SHA512
931ae42b4c68a4507ff2342332b08eb407050d47cf4176137ea022d0f6e513c689e998445a04c6d18d4877391705c586bfce0234632b898d41aaed0957996dfd

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_bzwho2gk.3jr.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpA72D.tmp

Filesize
1KB

MD5
3d550740d864ecdbf2c1515feb26baa5

SHA1
83c3570940df12a226d42f1a80420e84496cd783

SHA256
c85b2d0353bd8d5bfbe3d75909364fbb6ae912dc581b6a9396073c4e0866b304

SHA512
ef27937001e9c1d2ff1638feb2dd33ed909ef6c63222d253f121417605d3d2257f382e4737a68a9b19b7e92af883639d227cb684f45a00377074e9ac2faecc8e

Download Submit
memory/1776-111-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1776-58-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1776-110-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1776-119-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1776-103-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1776-102-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1776-126-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1776-60-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1776-57-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1776-118-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1776-56-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1776-55-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1776-49-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1776-52-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1776-127-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1776-48-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1776-47-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1980-19-0x0000000074860000-0x0000000075010000-memory.dmp

Filesize
7.7MB

Download
memory/1980-85-0x0000000007160000-0x000000000717A000-memory.dmp

Filesize
104KB

Download
memory/1980-34-0x0000000005940000-0x0000000005C94000-memory.dmp

Filesize
3.3MB

Download
memory/1980-45-0x0000000005E40000-0x0000000005E5E000-memory.dmp

Filesize
120KB

Download
memory/1980-46-0x00000000063F0000-0x000000000643C000-memory.dmp

Filesize
304KB

Download
memory/1980-23-0x0000000005110000-0x0000000005176000-memory.dmp

Filesize
408KB

Download
memory/1980-24-0x00000000057D0000-0x0000000005836000-memory.dmp

Filesize
408KB

Download
memory/1980-97-0x0000000074860000-0x0000000075010000-memory.dmp

Filesize
7.7MB

Download
memory/1980-92-0x0000000007480000-0x0000000007488000-memory.dmp

Filesize
32KB

Download
memory/1980-91-0x00000000074A0000-0x00000000074BA000-memory.dmp

Filesize
104KB

Download
memory/1980-90-0x00000000073A0000-0x00000000073B4000-memory.dmp

Filesize
80KB

Download
memory/1980-18-0x0000000074860000-0x0000000075010000-memory.dmp

Filesize
7.7MB

Download
memory/1980-17-0x00000000051A0000-0x00000000057C8000-memory.dmp

Filesize
6.2MB

Download
memory/1980-16-0x0000000074860000-0x0000000075010000-memory.dmp

Filesize
7.7MB

Download
memory/1980-15-0x0000000002500000-0x0000000002536000-memory.dmp

Filesize
216KB

Download
memory/1980-89-0x0000000007390000-0x000000000739E000-memory.dmp

Filesize
56KB

Download
memory/1980-75-0x00000000063C0000-0x00000000063DE000-memory.dmp

Filesize
120KB

Download
memory/1980-62-0x000000006F850000-0x000000006F89C000-memory.dmp

Filesize
304KB

Download
memory/1980-61-0x0000000006E00000-0x0000000006E32000-memory.dmp

Filesize
200KB

Download
memory/1980-83-0x0000000006E40000-0x0000000006EE3000-memory.dmp

Filesize
652KB

Download
memory/1980-84-0x00000000077A0000-0x0000000007E1A000-memory.dmp

Filesize
6.5MB

Download
memory/1980-22-0x0000000005070000-0x0000000005092000-memory.dmp

Filesize
136KB

Download
memory/1980-86-0x00000000071D0000-0x00000000071DA000-memory.dmp

Filesize
40KB

Download
memory/4348-21-0x0000000074860000-0x0000000075010000-memory.dmp

Filesize
7.7MB

Download
memory/4348-88-0x0000000007E20000-0x0000000007E31000-memory.dmp

Filesize
68KB

Download
memory/4348-63-0x000000006F850000-0x000000006F89C000-memory.dmp

Filesize
304KB

Download
memory/4348-98-0x0000000074860000-0x0000000075010000-memory.dmp

Filesize
7.7MB

Download
memory/4348-87-0x0000000007EA0000-0x0000000007F36000-memory.dmp

Filesize
600KB

Download
memory/4348-20-0x0000000074860000-0x0000000075010000-memory.dmp

Filesize
7.7MB

Download
memory/4664-0-0x000000007486E000-0x000000007486F000-memory.dmp

Filesize
4KB

Download
memory/4664-10-0x0000000009B60000-0x0000000009BFC000-memory.dmp

Filesize
624KB

Download
memory/4664-54-0x0000000074860000-0x0000000075010000-memory.dmp

Filesize
7.7MB

Download
memory/4664-9-0x0000000007520000-0x00000000075E0000-memory.dmp

Filesize
768KB

Download
memory/4664-8-0x0000000074860000-0x0000000075010000-memory.dmp

Filesize
7.7MB

Download
memory/4664-7-0x000000007486E000-0x000000007486F000-memory.dmp

Filesize
4KB

Download
memory/4664-6-0x0000000005D70000-0x0000000005D80000-memory.dmp

Filesize
64KB

Download
memory/4664-5-0x0000000005A80000-0x0000000005A8A000-memory.dmp

Filesize
40KB

Download
memory/4664-4-0x0000000074860000-0x0000000075010000-memory.dmp

Filesize
7.7MB

Download
memory/4664-3-0x00000000058D0000-0x0000000005962000-memory.dmp

Filesize
584KB

Download
memory/4664-2-0x0000000005D80000-0x0000000006324000-memory.dmp

Filesize
5.6MB

Download
memory/4664-1-0x0000000000F50000-0x0000000001032000-memory.dmp

Filesize
904KB

Download