remcos | 3d896c411b2b4c2f0f419adda474b192d6e7e0f496c7cf4bfb678d9bcdae11b5

Analysis

max time kernel
148s
max time network
147s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
29-08-2024 11:10

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General

Target

BP-30M31_20240829_093844.exe
Size

987KB
MD5

3fd2edc9d87c0a0eb814814f8f461483
SHA1

4b9ec9455439827479f661ddba252228e60db2ce
SHA256

3d896c411b2b4c2f0f419adda474b192d6e7e0f496c7cf4bfb678d9bcdae11b5
SHA512

21aee3b2bf388738937f7a262bc5def06c0d0eb09529d237565b369f93c643c5a44292031d844dc5a6e6a7f85866683d27e92ea966d3c24f89eabc6e84ae5070
SSDEEP

24576:OZMMCpg5QbkH/njR1WWdHSZCGF9bbMZi:70QmjR1W+HGHb9

Score

10^/10

remcos remotehost discovery execution rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

192.3.243.155:7643

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-C9YEJ8
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
1284	powershell.exe
2816	powershell.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2204 set thread context of 2188	2204	BP-30M31_20240829_093844.exe	37

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	BP-30M31_20240829_093844.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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	BP-30M31_20240829_093844.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
2836	schtasks.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2204	BP-30M31_20240829_093844.exe
2204	BP-30M31_20240829_093844.exe
1284	powershell.exe
2816	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2204	BP-30M31_20240829_093844.exe
Token: SeDebugPrivilege	1284	powershell.exe
Token: SeDebugPrivilege	2816	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2188	BP-30M31_20240829_093844.exe

Suspicious use of WriteProcessMemory 29 IoCs

description	pid	Process	procid_target
PID 2204 wrote to memory of 1284	2204	BP-30M31_20240829_093844.exe	30
PID 2204 wrote to memory of 1284	2204	BP-30M31_20240829_093844.exe	30
PID 2204 wrote to memory of 1284	2204	BP-30M31_20240829_093844.exe	30
PID 2204 wrote to memory of 1284	2204	BP-30M31_20240829_093844.exe	30
PID 2204 wrote to memory of 2816	2204	BP-30M31_20240829_093844.exe	32
PID 2204 wrote to memory of 2816	2204	BP-30M31_20240829_093844.exe	32
PID 2204 wrote to memory of 2816	2204	BP-30M31_20240829_093844.exe	32
PID 2204 wrote to memory of 2816	2204	BP-30M31_20240829_093844.exe	32
PID 2204 wrote to memory of 2836	2204	BP-30M31_20240829_093844.exe	33
PID 2204 wrote to memory of 2836	2204	BP-30M31_20240829_093844.exe	33
PID 2204 wrote to memory of 2836	2204	BP-30M31_20240829_093844.exe	33
PID 2204 wrote to memory of 2836	2204	BP-30M31_20240829_093844.exe	33
PID 2204 wrote to memory of 2712	2204	BP-30M31_20240829_093844.exe	36
PID 2204 wrote to memory of 2712	2204	BP-30M31_20240829_093844.exe	36
PID 2204 wrote to memory of 2712	2204	BP-30M31_20240829_093844.exe	36
PID 2204 wrote to memory of 2712	2204	BP-30M31_20240829_093844.exe	36
PID 2204 wrote to memory of 2188	2204	BP-30M31_20240829_093844.exe	37
PID 2204 wrote to memory of 2188	2204	BP-30M31_20240829_093844.exe	37
PID 2204 wrote to memory of 2188	2204	BP-30M31_20240829_093844.exe	37
PID 2204 wrote to memory of 2188	2204	BP-30M31_20240829_093844.exe	37
PID 2204 wrote to memory of 2188	2204	BP-30M31_20240829_093844.exe	37
PID 2204 wrote to memory of 2188	2204	BP-30M31_20240829_093844.exe	37
PID 2204 wrote to memory of 2188	2204	BP-30M31_20240829_093844.exe	37
PID 2204 wrote to memory of 2188	2204	BP-30M31_20240829_093844.exe	37
PID 2204 wrote to memory of 2188	2204	BP-30M31_20240829_093844.exe	37
PID 2204 wrote to memory of 2188	2204	BP-30M31_20240829_093844.exe	37
PID 2204 wrote to memory of 2188	2204	BP-30M31_20240829_093844.exe	37
PID 2204 wrote to memory of 2188	2204	BP-30M31_20240829_093844.exe	37
PID 2204 wrote to memory of 2188	2204	BP-30M31_20240829_093844.exe	37

C:\Users\Admin\AppData\Local\Temp\BP-30M31_20240829_093844.exe
"C:\Users\Admin\AppData\Local\Temp\BP-30M31_20240829_093844.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2204
- 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\BP-30M31_20240829_093844.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1284
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\gqxyRiPaQx.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2816
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\gqxyRiPaQx" /XML "C:\Users\Admin\AppData\Local\Temp\tmpCBE7.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2836
- C:\Users\Admin\AppData\Local\Temp\BP-30M31_20240829_093844.exe
  "C:\Users\Admin\AppData\Local\Temp\BP-30M31_20240829_093844.exe"
  2⤵
  PID:2712
- C:\Users\Admin\AppData\Local\Temp\BP-30M31_20240829_093844.exe
  "C:\Users\Admin\AppData\Local\Temp\BP-30M31_20240829_093844.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:2188

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

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
aff6867f85d59d82e107b03305a5a0aa

SHA1
e3cf7a7b9cbca40fda253b00cee0796a86d15a51

SHA256
e613ed4b464ac08f518ac8f925297cd2923f6ab664bccc1db849ab99bbbc907a

SHA512
3c8fec6c43a819679bf54e05f462fa8133f52d0ba766378d1dbda0ce6b02d2f311111de4bff8ba7b722d41461d541f91120b75f6376915612cf2428cbd1d2f08

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpCBE7.tmp

Filesize
1KB

MD5
d9e83d024ddb33cee587de84eb13ff4e

SHA1
cd084aa36109ffbc58c0b31c8b9934e7b6c064a1

SHA256
fc0c727b95376a6cd1b8921a36783bffb43db7db0185a2e359932080836dd9ce

SHA512
32a92450fa4ebebe6834881ddf5fd93e91fae7cf91e10d77c66955f0bccd9a1a591b3f923d223e24f93653eb4753afd82497055b124814a215acd605e036c67f

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms

Filesize
7KB

MD5
52dd14139ee1630cfa01f60e49b37b64

SHA1
3ff80b7c0833c1763b27b1c5658b982c7f0b8db3

SHA256
62676c64f8ed56eeac1a85b43b20ecfce5d28f0f8251a9772a866104fd656138

SHA512
f12681a29f56ec7390c2fc2cb2ae705ea8c59955e605eb3a5f68f2434abd6aa901bee6f9fa1c007a60fab1ba0f5ccc477d5ae016f0da4c480c41c32db3c4943c

Download Submit
memory/2188-38-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2188-50-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2188-37-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2188-36-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2188-83-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2188-82-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2188-27-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2188-29-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2188-21-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2188-25-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2188-23-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2188-19-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2188-41-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2188-42-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2188-74-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2188-75-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2188-67-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2188-66-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2188-59-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2188-33-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2188-31-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2188-44-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2188-45-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2188-46-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2188-48-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2188-35-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2188-51-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2188-58-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2204-1-0x0000000000280000-0x000000000037E000-memory.dmp

Filesize
1016KB

Download
memory/2204-4-0x0000000073F9E000-0x0000000073F9F000-memory.dmp

Filesize
4KB

Download
memory/2204-6-0x0000000004F40000-0x0000000005000000-memory.dmp

Filesize
768KB

Download
memory/2204-5-0x0000000073F90000-0x000000007467E000-memory.dmp

Filesize
6.9MB

Download
memory/2204-0-0x0000000073F9E000-0x0000000073F9F000-memory.dmp

Filesize
4KB

Download
memory/2204-43-0x0000000073F90000-0x000000007467E000-memory.dmp

Filesize
6.9MB

Download
memory/2204-2-0x0000000073F90000-0x000000007467E000-memory.dmp

Filesize
6.9MB

Download
memory/2204-3-0x0000000000720000-0x0000000000738000-memory.dmp

Filesize
96KB

Download