remcos | 79732670234d723da588faab41efbaeeb0708fdd15fa283a7322b91963d41b6e

Analysis

max time kernel
148s
max time network
145s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
10-09-2024 02:02

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General

Target

Quotation.exe
Size

899KB
MD5

9704ccf025eb5b76cf9485718a5ae9ba
SHA1

1a50054fb88f8667ea346a9cfd4ffa501ff491fe
SHA256

1c022ec2400c0c5197aa32cef3182a09a13213dedfe1db71fc18c6d399571ed9
SHA512

02a54924f0f6de0b7df557fc0606f372fb52d70dc950e843195aacbf6b1f12f2a0d0a879be79c5c2da4b2bd9a159a0948b1a3dc594ba9227a345cf792c55e038
SSDEEP

12288:qEXIarzS1y2y5bQqTIl7ahRvVDAJU+Ib9/xyDszk1rCMNcEBVhj2MVOEjctICdch:SaaBGvlh1+fIbTZklf32MsactInKkE

Score

10^/10

remcos remotehost discovery execution rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

spacesave.duckdns.org:14645

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-RLABK3
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
2300	powershell.exe
2140	powershell.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2500 set thread context of 2616	2500	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	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Quotation.exe
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	powershell.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
2680	schtasks.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
2500	Quotation.exe
2500	Quotation.exe
2500	Quotation.exe
2500	Quotation.exe
2500	Quotation.exe
2500	Quotation.exe
2300	powershell.exe
2140	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2500	Quotation.exe
Token: SeDebugPrivilege	2300	powershell.exe
Token: SeDebugPrivilege	2140	powershell.exe

Suspicious use of WriteProcessMemory 37 IoCs

description	pid	Process	procid_target
PID 2500 wrote to memory of 2300	2500	Quotation.exe	30
PID 2500 wrote to memory of 2300	2500	Quotation.exe	30
PID 2500 wrote to memory of 2300	2500	Quotation.exe	30
PID 2500 wrote to memory of 2300	2500	Quotation.exe	30
PID 2500 wrote to memory of 2140	2500	Quotation.exe	32
PID 2500 wrote to memory of 2140	2500	Quotation.exe	32
PID 2500 wrote to memory of 2140	2500	Quotation.exe	32
PID 2500 wrote to memory of 2140	2500	Quotation.exe	32
PID 2500 wrote to memory of 2680	2500	Quotation.exe	34
PID 2500 wrote to memory of 2680	2500	Quotation.exe	34
PID 2500 wrote to memory of 2680	2500	Quotation.exe	34
PID 2500 wrote to memory of 2680	2500	Quotation.exe	34
PID 2500 wrote to memory of 2848	2500	Quotation.exe	36
PID 2500 wrote to memory of 2848	2500	Quotation.exe	36
PID 2500 wrote to memory of 2848	2500	Quotation.exe	36
PID 2500 wrote to memory of 2848	2500	Quotation.exe	36
PID 2500 wrote to memory of 2872	2500	Quotation.exe	37
PID 2500 wrote to memory of 2872	2500	Quotation.exe	37
PID 2500 wrote to memory of 2872	2500	Quotation.exe	37
PID 2500 wrote to memory of 2872	2500	Quotation.exe	37
PID 2500 wrote to memory of 2868	2500	Quotation.exe	38
PID 2500 wrote to memory of 2868	2500	Quotation.exe	38
PID 2500 wrote to memory of 2868	2500	Quotation.exe	38
PID 2500 wrote to memory of 2868	2500	Quotation.exe	38
PID 2500 wrote to memory of 2616	2500	Quotation.exe	39
PID 2500 wrote to memory of 2616	2500	Quotation.exe	39
PID 2500 wrote to memory of 2616	2500	Quotation.exe	39
PID 2500 wrote to memory of 2616	2500	Quotation.exe	39
PID 2500 wrote to memory of 2616	2500	Quotation.exe	39
PID 2500 wrote to memory of 2616	2500	Quotation.exe	39
PID 2500 wrote to memory of 2616	2500	Quotation.exe	39
PID 2500 wrote to memory of 2616	2500	Quotation.exe	39
PID 2500 wrote to memory of 2616	2500	Quotation.exe	39
PID 2500 wrote to memory of 2616	2500	Quotation.exe	39
PID 2500 wrote to memory of 2616	2500	Quotation.exe	39
PID 2500 wrote to memory of 2616	2500	Quotation.exe	39
PID 2500 wrote to memory of 2616	2500	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:2500
- 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:2300
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\wCnzGs.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2140
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\wCnzGs" /XML "C:\Users\Admin\AppData\Local\Temp\tmpB1C2.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2680
- C:\Users\Admin\AppData\Local\Temp\Quotation.exe
  "C:\Users\Admin\AppData\Local\Temp\Quotation.exe"
  2⤵
  PID:2848
- C:\Users\Admin\AppData\Local\Temp\Quotation.exe
  "C:\Users\Admin\AppData\Local\Temp\Quotation.exe"
  2⤵
  PID:2872
- C:\Users\Admin\AppData\Local\Temp\Quotation.exe
  "C:\Users\Admin\AppData\Local\Temp\Quotation.exe"
  2⤵
  PID:2868
- C:\Users\Admin\AppData\Local\Temp\Quotation.exe
  "C:\Users\Admin\AppData\Local\Temp\Quotation.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2616

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:\Users\Admin\AppData\Local\Temp\tmpB1C2.tmp

Filesize
1KB

MD5
082e57e65703e593fa0cd59a36e2b125

SHA1
27df3d7628c75d478d1b20fa53af0eadcc12e38a

SHA256
bd8ba962314143fcddfb59d568f4351d54e8f97fd949f77a97361fdc64906815

SHA512
79dccc294ebd27c7087fcfec4ba0e58b04c937c11f9efc3aab77f75a582b9309e48f77750a98af0268b7c2103ec9ac161a3370be868c0a04b5a81814b20bcd18

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

Filesize
7KB

MD5
8fabdc77ca87a097e7b55de1280bce8c

SHA1
6a2ce2945277b98b406c540af310c9696e726e55

SHA256
a00d6bdfedb14c015391b363fc786924f8a76235a6e22cebf041915b4f7b172b

SHA512
9d941694d4a84df27e2c2cc0e24d2bac140ea52ef745917977d41a8c717a7b60c44664a4c830555eafc9a8c3dd57b4c2a3763cb52181036cbd44c51fd5115e33

Download Submit
memory/2500-0-0x00000000746CE000-0x00000000746CF000-memory.dmp

Filesize
4KB

Download
memory/2500-1-0x0000000000220000-0x0000000000306000-memory.dmp

Filesize
920KB

Download
memory/2500-2-0x00000000746C0000-0x0000000074DAE000-memory.dmp

Filesize
6.9MB

Download
memory/2500-3-0x0000000000340000-0x0000000000350000-memory.dmp

Filesize
64KB

Download
memory/2500-4-0x00000000746CE000-0x00000000746CF000-memory.dmp

Filesize
4KB

Download
memory/2500-5-0x00000000746C0000-0x0000000074DAE000-memory.dmp

Filesize
6.9MB

Download
memory/2500-6-0x0000000005E90000-0x0000000005F50000-memory.dmp

Filesize
768KB

Download
memory/2500-40-0x00000000746C0000-0x0000000074DAE000-memory.dmp

Filesize
6.9MB

Download
memory/2616-36-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2616-39-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2616-21-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2616-24-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2616-37-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2616-38-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2616-29-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2616-35-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2616-33-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2616-31-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2616-27-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2616-19-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2616-25-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2616-41-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2616-42-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2616-43-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2616-46-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2616-47-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2616-48-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2616-50-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2616-51-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2616-53-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2616-52-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download