remcos | 49e7ee12a475105efab2e363450b2e5582fc05d114967fe57a3d80d22a2fea81

General

Target

Quotationpdf.exe
Size

869KB
MD5

27934061e8cbcfcf5e5b8937a662c26f
SHA1

a508513b842e11c7c277af67e4bc51466d0637b8
SHA256

49e7ee12a475105efab2e363450b2e5582fc05d114967fe57a3d80d22a2fea81
SHA512

c79374546867ae8197d6fdbec40150b7124e272151e73c2a7361dd96a04b3a5f710d42f82b0d77349a07ae667aee066b11c949782eb2f2329e3711752e2c95d2
SSDEEP

24576:q0jXiRZoEJGywbvjCe9WRSKObmSej7vydBs:MDIvjCe4ebmSejzf

Score

10^/10

remcos remotehost discovery execution rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

127.0.0.1:59321

nnamoo.duckdns.org:59321

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-41EVS0
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
startup_value
Remcos
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
3064	powershell.exe
2068	powershell.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2328 set thread context of 2848	2328	Quotationpdf.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	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Quotationpdf.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Quotationpdf.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
2664	schtasks.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2328	Quotationpdf.exe
2328	Quotationpdf.exe
2068	powershell.exe
3064	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2328	Quotationpdf.exe
Token: SeDebugPrivilege	3064	powershell.exe
Token: SeDebugPrivilege	2068	powershell.exe

Suspicious use of WriteProcessMemory 25 IoCs

description	pid	Process	procid_target
PID 2328 wrote to memory of 3064	2328	Quotationpdf.exe	31
PID 2328 wrote to memory of 3064	2328	Quotationpdf.exe	31
PID 2328 wrote to memory of 3064	2328	Quotationpdf.exe	31
PID 2328 wrote to memory of 3064	2328	Quotationpdf.exe	31
PID 2328 wrote to memory of 2068	2328	Quotationpdf.exe	33
PID 2328 wrote to memory of 2068	2328	Quotationpdf.exe	33
PID 2328 wrote to memory of 2068	2328	Quotationpdf.exe	33
PID 2328 wrote to memory of 2068	2328	Quotationpdf.exe	33
PID 2328 wrote to memory of 2664	2328	Quotationpdf.exe	35
PID 2328 wrote to memory of 2664	2328	Quotationpdf.exe	35
PID 2328 wrote to memory of 2664	2328	Quotationpdf.exe	35
PID 2328 wrote to memory of 2664	2328	Quotationpdf.exe	35
PID 2328 wrote to memory of 2848	2328	Quotationpdf.exe	37
PID 2328 wrote to memory of 2848	2328	Quotationpdf.exe	37
PID 2328 wrote to memory of 2848	2328	Quotationpdf.exe	37
PID 2328 wrote to memory of 2848	2328	Quotationpdf.exe	37
PID 2328 wrote to memory of 2848	2328	Quotationpdf.exe	37
PID 2328 wrote to memory of 2848	2328	Quotationpdf.exe	37
PID 2328 wrote to memory of 2848	2328	Quotationpdf.exe	37
PID 2328 wrote to memory of 2848	2328	Quotationpdf.exe	37
PID 2328 wrote to memory of 2848	2328	Quotationpdf.exe	37
PID 2328 wrote to memory of 2848	2328	Quotationpdf.exe	37
PID 2328 wrote to memory of 2848	2328	Quotationpdf.exe	37
PID 2328 wrote to memory of 2848	2328	Quotationpdf.exe	37
PID 2328 wrote to memory of 2848	2328	Quotationpdf.exe	37

C:\Users\Admin\AppData\Local\Temp\Quotationpdf.exe
"C:\Users\Admin\AppData\Local\Temp\Quotationpdf.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2328
- 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\Quotationpdf.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3064
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\BptXqGmS.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2068
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\BptXqGmS" /XML "C:\Users\Admin\AppData\Local\Temp\tmpE1A8.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2664
- C:\Users\Admin\AppData\Local\Temp\Quotationpdf.exe
  "C:\Users\Admin\AppData\Local\Temp\Quotationpdf.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2848

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpE1A8.tmp

Filesize
1KB

MD5
49e60b1c9c6913bc09e88d6935226a86

SHA1
f8306c2e85dad21af55d70f0363c97af1b5c583c

SHA256
423dad7d13d7d7fa6f99236830db05d7db69154c9b6343a36186a3bd0706e1e1

SHA512
eae93b17d5f60c99c1a98f289097a1b8b4fcf29d1557a6376cdabe93bbc9cf7b3c21e7e15369ea37c33968757eaa573882068fdbf4f9797067a86b6e338c1aaa

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\SDLSAXLILYEQ2PYHOOMS.temp

Filesize
7KB

MD5
088799e60f25478afc8add55091a482f

SHA1
fb63b2f5b1c787a55446f69640d52c0bec47f2c3

SHA256
81217da114831ac9d5ea64d753609b17f45db9c7f9f5ed2eca1aa99906a99108

SHA512
9923404ba4949a993241de218044e3cdc9341727a2506ac79e567c4eef641e7c329392d36abf9e4505a44d2a2d4bffe8817d66b5288719db4faa3bbf80963d33

Download Submit
memory/2328-0-0x00000000745BE000-0x00000000745BF000-memory.dmp

Filesize
4KB

Download
memory/2328-1-0x0000000000860000-0x0000000000940000-memory.dmp

Filesize
896KB

Download
memory/2328-2-0x00000000745B0000-0x0000000074C9E000-memory.dmp

Filesize
6.9MB

Download
memory/2328-3-0x00000000001D0000-0x00000000001E0000-memory.dmp

Filesize
64KB

Download
memory/2328-4-0x00000000745BE000-0x00000000745BF000-memory.dmp

Filesize
4KB

Download
memory/2328-5-0x00000000745B0000-0x0000000074C9E000-memory.dmp

Filesize
6.9MB

Download
memory/2328-6-0x0000000005500000-0x00000000055BE000-memory.dmp

Filesize
760KB

Download
memory/2328-40-0x00000000745B0000-0x0000000074C9E000-memory.dmp

Filesize
6.9MB

Download
memory/2848-36-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2848-41-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2848-23-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2848-21-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2848-32-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2848-37-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2848-39-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2848-38-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2848-25-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2848-35-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2848-34-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2848-29-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2848-19-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2848-27-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2848-42-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2848-43-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2848-44-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2848-45-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2848-48-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2848-49-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2848-50-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2848-51-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2848-53-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2848-52-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2848-54-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2848-55-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download

Resubmissions

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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