remcos | e05cc67d73ac305af568bad10b09f26ec5641fee5a29cfc4b20d9efc6b2581b0

Analysis

max time kernel
149s
max time network
148s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
02-09-2024 01:26

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General

Target

87890090.exe
Size

939KB
MD5

ca330ebb67c44998be8383a64695ee01
SHA1

d12a274d4ca5a31dc1d6d50eb37716fa6fd30289
SHA256

e05cc67d73ac305af568bad10b09f26ec5641fee5a29cfc4b20d9efc6b2581b0
SHA512

44e667e246ca5cbdb1613f86fdd67bc9128612fbaba507bf0d2278b128d6cd9de4b7d1435da99846af2be369d19db05c09c394ce45b4d0d86efaf4211dd4832d
SSDEEP

12288:90R0dF0bI2GYGlbThYHjb7cQwi3xSDBRAqb0TW85LE2kdyMV077HcQCE6lV:90R2WbJGlHEQYSUI8BkHnQ0l

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 1 IoCs

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

execution

PowerShell

T1059.001

pid	Process
1544	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-1-5-21-656926755-4116854191-210765258-1000\Control Panel\International\Geo\Nation	87890090.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2168 set thread context of 32	2168	87890090.exe	98

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 4 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	87890090.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	87890090.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
892	schtasks.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
2168	87890090.exe
2168	87890090.exe
2168	87890090.exe
2168	87890090.exe
2168	87890090.exe
2168	87890090.exe
1544	powershell.exe
1544	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2168	87890090.exe
Token: SeDebugPrivilege	1544	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
32	87890090.exe

Suspicious use of WriteProcessMemory 27 IoCs

description	pid	Process	procid_target
PID 2168 wrote to memory of 1544	2168	87890090.exe	91
PID 2168 wrote to memory of 1544	2168	87890090.exe	91
PID 2168 wrote to memory of 1544	2168	87890090.exe	91
PID 2168 wrote to memory of 892	2168	87890090.exe	93
PID 2168 wrote to memory of 892	2168	87890090.exe	93
PID 2168 wrote to memory of 892	2168	87890090.exe	93
PID 2168 wrote to memory of 4280	2168	87890090.exe	95
PID 2168 wrote to memory of 4280	2168	87890090.exe	95
PID 2168 wrote to memory of 4280	2168	87890090.exe	95
PID 2168 wrote to memory of 5048	2168	87890090.exe	96
PID 2168 wrote to memory of 5048	2168	87890090.exe	96
PID 2168 wrote to memory of 5048	2168	87890090.exe	96
PID 2168 wrote to memory of 1904	2168	87890090.exe	97
PID 2168 wrote to memory of 1904	2168	87890090.exe	97
PID 2168 wrote to memory of 1904	2168	87890090.exe	97
PID 2168 wrote to memory of 32	2168	87890090.exe	98
PID 2168 wrote to memory of 32	2168	87890090.exe	98
PID 2168 wrote to memory of 32	2168	87890090.exe	98
PID 2168 wrote to memory of 32	2168	87890090.exe	98
PID 2168 wrote to memory of 32	2168	87890090.exe	98
PID 2168 wrote to memory of 32	2168	87890090.exe	98
PID 2168 wrote to memory of 32	2168	87890090.exe	98
PID 2168 wrote to memory of 32	2168	87890090.exe	98
PID 2168 wrote to memory of 32	2168	87890090.exe	98
PID 2168 wrote to memory of 32	2168	87890090.exe	98
PID 2168 wrote to memory of 32	2168	87890090.exe	98
PID 2168 wrote to memory of 32	2168	87890090.exe	98

C:\Users\Admin\AppData\Local\Temp\87890090.exe
"C:\Users\Admin\AppData\Local\Temp\87890090.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:2168
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\hshVFxw.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1544
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\hshVFxw" /XML "C:\Users\Admin\AppData\Local\Temp\tmpB4F8.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:892
- C:\Users\Admin\AppData\Local\Temp\87890090.exe
  "C:\Users\Admin\AppData\Local\Temp\87890090.exe"
  2⤵
  PID:4280
- C:\Users\Admin\AppData\Local\Temp\87890090.exe
  "C:\Users\Admin\AppData\Local\Temp\87890090.exe"
  2⤵
  PID:5048
- C:\Users\Admin\AppData\Local\Temp\87890090.exe
  "C:\Users\Admin\AppData\Local\Temp\87890090.exe"
  2⤵
  PID:1904
- C:\Users\Admin\AppData\Local\Temp\87890090.exe
  "C:\Users\Admin\AppData\Local\Temp\87890090.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:32

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
fff206b146bd76e71f1481b89f37234f

SHA1
e2ceb71b4e69eb376f1aab0e38d3baa57a2d3f4e

SHA256
824e23bfd3f2c9047298414b278b4d6913fea6bd711cfca09efcf1f7ecc5f779

SHA512
50b98810869b9b88a13f3a469ece2bddbe8bf5b0e86aa5d9cf5438d3a0bd9a1a92a1bbfdf5ee9e57df36eefa60069b71cd56539f3a6d430c7636184e91a8c196

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_vnbfyxe1.3q5.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpB4F8.tmp

Filesize
1KB

MD5
f3ce01ae51160ddbddbf33e7ac4375f8

SHA1
775966994b05d6c2aa1ae9926554943bec509a7d

SHA256
9b14d8c6be27352e8a9d1f78100e13c314158440043fa455e64de1cb5a06d715

SHA512
53e9399a49a9b8f2c89fdb25da3cc16d4475509e8b8a221588192aeb551a0c79051ca73aaad1e5984cc3b7cf39785997ea81626c0f88e441f0305ffaeeca5a51

Download Submit
memory/32-65-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/32-49-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/32-94-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/32-95-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/32-87-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/32-86-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/32-103-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/32-81-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/32-66-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/32-111-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/32-110-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/32-102-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/32-47-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/32-20-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/32-21-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/32-23-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/32-27-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/32-48-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/32-24-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/32-44-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/32-42-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1544-45-0x0000000006560000-0x000000000657E000-memory.dmp

Filesize
120KB

Download
memory/1544-69-0x0000000007910000-0x000000000791A000-memory.dmp

Filesize
40KB

Download
memory/1544-41-0x00000000744D0000-0x0000000074C80000-memory.dmp

Filesize
7.7MB

Download
memory/1544-43-0x00000000060D0000-0x0000000006424000-memory.dmp

Filesize
3.3MB

Download
memory/1544-35-0x0000000005D90000-0x0000000005DF6000-memory.dmp

Filesize
408KB

Download
memory/1544-29-0x0000000005CF0000-0x0000000005D12000-memory.dmp

Filesize
136KB

Download
memory/1544-78-0x00000000744D0000-0x0000000074C80000-memory.dmp

Filesize
7.7MB

Download
memory/1544-46-0x0000000006600000-0x000000000664C000-memory.dmp

Filesize
304KB

Download
memory/1544-75-0x0000000007BC0000-0x0000000007BC8000-memory.dmp

Filesize
32KB

Download
memory/1544-19-0x00000000744D0000-0x0000000074C80000-memory.dmp

Filesize
7.7MB

Download
memory/1544-18-0x00000000744D0000-0x0000000074C80000-memory.dmp

Filesize
7.7MB

Download
memory/1544-52-0x0000000007520000-0x0000000007552000-memory.dmp

Filesize
200KB

Download
memory/1544-53-0x0000000070CC0000-0x0000000070D0C000-memory.dmp

Filesize
304KB

Download
memory/1544-63-0x0000000006B40000-0x0000000006B5E000-memory.dmp

Filesize
120KB

Download
memory/1544-64-0x0000000007760000-0x0000000007803000-memory.dmp

Filesize
652KB

Download
memory/1544-17-0x0000000005660000-0x0000000005C88000-memory.dmp

Filesize
6.2MB

Download
memory/1544-15-0x0000000002C70000-0x0000000002CA6000-memory.dmp

Filesize
216KB

Download
memory/1544-67-0x0000000007EE0000-0x000000000855A000-memory.dmp

Filesize
6.5MB

Download
memory/1544-68-0x00000000078A0000-0x00000000078BA000-memory.dmp

Filesize
104KB

Download
memory/1544-36-0x0000000005F30000-0x0000000005F96000-memory.dmp

Filesize
408KB

Download
memory/1544-70-0x0000000007B20000-0x0000000007BB6000-memory.dmp

Filesize
600KB

Download
memory/1544-71-0x0000000007AA0000-0x0000000007AB1000-memory.dmp

Filesize
68KB

Download
memory/1544-72-0x0000000007AD0000-0x0000000007ADE000-memory.dmp

Filesize
56KB

Download
memory/1544-73-0x0000000007AE0000-0x0000000007AF4000-memory.dmp

Filesize
80KB

Download
memory/1544-74-0x0000000007BE0000-0x0000000007BFA000-memory.dmp

Filesize
104KB

Download
memory/2168-28-0x00000000744D0000-0x0000000074C80000-memory.dmp

Filesize
7.7MB

Download
memory/2168-0-0x00000000744DE000-0x00000000744DF000-memory.dmp

Filesize
4KB

Download
memory/2168-10-0x00000000086B0000-0x000000000874C000-memory.dmp

Filesize
624KB

Download
memory/2168-9-0x0000000006020000-0x00000000060E0000-memory.dmp

Filesize
768KB

Download
memory/2168-8-0x00000000744D0000-0x0000000074C80000-memory.dmp

Filesize
7.7MB

Download
memory/2168-7-0x00000000744DE000-0x00000000744DF000-memory.dmp

Filesize
4KB

Download
memory/2168-6-0x0000000004F90000-0x0000000004FA8000-memory.dmp

Filesize
96KB

Download
memory/2168-5-0x0000000004C90000-0x0000000004C9A000-memory.dmp

Filesize
40KB

Download
memory/2168-4-0x00000000744D0000-0x0000000074C80000-memory.dmp

Filesize
7.7MB

Download
memory/2168-3-0x0000000004CE0000-0x0000000004D72000-memory.dmp

Filesize
584KB

Download
memory/2168-2-0x0000000005290000-0x0000000005834000-memory.dmp

Filesize
5.6MB

Download
memory/2168-1-0x00000000001B0000-0x00000000002A0000-memory.dmp

Filesize
960KB

Download