remcos | b006a224fd6aaf4f45486c8fa33b4bf4758dfb5bc904aad2e75400ed2f4b5b22

Analysis

max time kernel
149s
max time network
149s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
04-09-2024 14:34

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General

Target

Quotation.exe
Size

979KB
MD5

8659cc0ca704216852186a28d5f0c90d
SHA1

957cd1e290abc9977a99be7d460d1d77e1aa0fda
SHA256

b006a224fd6aaf4f45486c8fa33b4bf4758dfb5bc904aad2e75400ed2f4b5b22
SHA512

589239fbe4d2e5416650e924f185e96bb9bae0a0b11d37f4ff52a263f985c78082f304ba046979a23d98f7d6b4f4bf7cd9a44d8608a726e758aaaa982f7e998d
SSDEEP

24576:nkgzVXgT3xKSTd2vTKksbMpu2uUOvuYQFEvIg:RgjxKSTd2eFbMoTmBWvR

Score

10^/10

remcos remotehost discovery execution rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

23.95.235.18:2557

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-E0JKXE
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
2584	powershell.exe
2552	powershell.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2648 set thread context of 1500	2648	Quotation.exe	39

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	Quotation.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	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Quotation.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
2576	schtasks.exe

Suspicious behavior: EnumeratesProcesses 13 IoCs

pid	Process
2648	Quotation.exe
2648	Quotation.exe
2648	Quotation.exe
2648	Quotation.exe
2648	Quotation.exe
2648	Quotation.exe
2648	Quotation.exe
2648	Quotation.exe
2648	Quotation.exe
2648	Quotation.exe
2648	Quotation.exe
2584	powershell.exe
2552	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2648	Quotation.exe
Token: SeDebugPrivilege	2584	powershell.exe
Token: SeDebugPrivilege	2552	powershell.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 2648 wrote to memory of 2584	2648	Quotation.exe	31
PID 2648 wrote to memory of 2584	2648	Quotation.exe	31
PID 2648 wrote to memory of 2584	2648	Quotation.exe	31
PID 2648 wrote to memory of 2584	2648	Quotation.exe	31
PID 2648 wrote to memory of 2552	2648	Quotation.exe	33
PID 2648 wrote to memory of 2552	2648	Quotation.exe	33
PID 2648 wrote to memory of 2552	2648	Quotation.exe	33
PID 2648 wrote to memory of 2552	2648	Quotation.exe	33
PID 2648 wrote to memory of 2576	2648	Quotation.exe	34
PID 2648 wrote to memory of 2576	2648	Quotation.exe	34
PID 2648 wrote to memory of 2576	2648	Quotation.exe	34
PID 2648 wrote to memory of 2576	2648	Quotation.exe	34
PID 2648 wrote to memory of 1836	2648	Quotation.exe	37
PID 2648 wrote to memory of 1836	2648	Quotation.exe	37
PID 2648 wrote to memory of 1836	2648	Quotation.exe	37
PID 2648 wrote to memory of 1836	2648	Quotation.exe	37
PID 2648 wrote to memory of 992	2648	Quotation.exe	38
PID 2648 wrote to memory of 992	2648	Quotation.exe	38
PID 2648 wrote to memory of 992	2648	Quotation.exe	38
PID 2648 wrote to memory of 992	2648	Quotation.exe	38
PID 2648 wrote to memory of 1500	2648	Quotation.exe	39
PID 2648 wrote to memory of 1500	2648	Quotation.exe	39
PID 2648 wrote to memory of 1500	2648	Quotation.exe	39
PID 2648 wrote to memory of 1500	2648	Quotation.exe	39
PID 2648 wrote to memory of 1500	2648	Quotation.exe	39
PID 2648 wrote to memory of 1500	2648	Quotation.exe	39
PID 2648 wrote to memory of 1500	2648	Quotation.exe	39
PID 2648 wrote to memory of 1500	2648	Quotation.exe	39
PID 2648 wrote to memory of 1500	2648	Quotation.exe	39
PID 2648 wrote to memory of 1500	2648	Quotation.exe	39
PID 2648 wrote to memory of 1500	2648	Quotation.exe	39
PID 2648 wrote to memory of 1500	2648	Quotation.exe	39
PID 2648 wrote to memory of 1500	2648	Quotation.exe	39

C:\Users\Admin\AppData\Local\Temp\Quotation.exe
"C:\Users\Admin\AppData\Local\Temp\Quotation.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2648
- 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\Quotation.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2584
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\RqGYPgyjgV.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2552
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\RqGYPgyjgV" /XML "C:\Users\Admin\AppData\Local\Temp\tmpDCC8.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2576
- C:\Users\Admin\AppData\Local\Temp\Quotation.exe
  "C:\Users\Admin\AppData\Local\Temp\Quotation.exe"
  2⤵
  PID:1836
- C:\Users\Admin\AppData\Local\Temp\Quotation.exe
  "C:\Users\Admin\AppData\Local\Temp\Quotation.exe"
  2⤵
  PID:992
- C:\Users\Admin\AppData\Local\Temp\Quotation.exe
  "C:\Users\Admin\AppData\Local\Temp\Quotation.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1500

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpDCC8.tmp

Filesize
1KB

MD5
bcd5a3e685dfeffd7f06a07882cdacb3

SHA1
0a9941e8b208879eb93c87ce85d2512e96834b96

SHA256
740106bf16773c797e78ae294df8e28e0a0a45009d833f11a256307f45cc2bad

SHA512
bd681fda8fdb0fb58768b4c601bdbdc5d121b0bced39f498af707a8241f3b9c5a0b1e229f0a127eec0fbddb03f74cb08fd933079154b47d4aca9d2d0256b86ef

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\NVUYYBYBFKC47RSM0WXX.temp

Filesize
7KB

MD5
381b55afc6458897ecd4642d9d46216e

SHA1
d6388dd1b701d28bfd2a80cd2b00cf3374b590fa

SHA256
35707945847707e500f4d6b8b188cd3374cc14aee12bfaa915e9b93faa257a50

SHA512
73f215511e6376b01d561be1738ef5f672071e231c2d9a3e76c50b529382e87ba3cbe6a573b1bf068ff22a0e6086bd7c8bc992f24be323a56d9b4ad69e14ccf9

Download Submit
memory/1500-37-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1500-50-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1500-52-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1500-35-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1500-51-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1500-49-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1500-33-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1500-19-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1500-21-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1500-25-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1500-31-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1500-36-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1500-39-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1500-38-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1500-53-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1500-48-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1500-47-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1500-29-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1500-27-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1500-23-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1500-46-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1500-41-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1500-42-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1500-43-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2648-40-0x0000000073F10000-0x00000000745FE000-memory.dmp

Filesize
6.9MB

Download
memory/2648-1-0x0000000000140000-0x0000000000238000-memory.dmp

Filesize
992KB

Download
memory/2648-3-0x0000000000390000-0x00000000003A8000-memory.dmp

Filesize
96KB

Download
memory/2648-2-0x0000000073F10000-0x00000000745FE000-memory.dmp

Filesize
6.9MB

Download
memory/2648-6-0x0000000005BC0000-0x0000000005C80000-memory.dmp

Filesize
768KB

Download
memory/2648-5-0x0000000073F10000-0x00000000745FE000-memory.dmp

Filesize
6.9MB

Download
memory/2648-4-0x0000000073F1E000-0x0000000073F1F000-memory.dmp

Filesize
4KB

Download
memory/2648-0-0x0000000073F1E000-0x0000000073F1F000-memory.dmp

Filesize
4KB

Download