remcos | 49e7ee12a475105efab2e363450b2e5582fc05d114967fe57a3d80d22a2fea81

Analysis

max time kernel
148s
max time network
148s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
20-09-2024 15:34

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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

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
2700	powershell.exe
2748	powershell.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1760 set thread context of 2872	1760	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
2136	schtasks.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
1760	Quotationpdf.exe
1760	Quotationpdf.exe
1760	Quotationpdf.exe
1760	Quotationpdf.exe
2748	powershell.exe
2700	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1760	Quotationpdf.exe
Token: SeDebugPrivilege	2748	powershell.exe
Token: SeDebugPrivilege	2700	powershell.exe

Suspicious use of WriteProcessMemory 29 IoCs

description	pid	Process	procid_target
PID 1760 wrote to memory of 2700	1760	Quotationpdf.exe	30
PID 1760 wrote to memory of 2700	1760	Quotationpdf.exe	30
PID 1760 wrote to memory of 2700	1760	Quotationpdf.exe	30
PID 1760 wrote to memory of 2700	1760	Quotationpdf.exe	30
PID 1760 wrote to memory of 2748	1760	Quotationpdf.exe	32
PID 1760 wrote to memory of 2748	1760	Quotationpdf.exe	32
PID 1760 wrote to memory of 2748	1760	Quotationpdf.exe	32
PID 1760 wrote to memory of 2748	1760	Quotationpdf.exe	32
PID 1760 wrote to memory of 2136	1760	Quotationpdf.exe	33
PID 1760 wrote to memory of 2136	1760	Quotationpdf.exe	33
PID 1760 wrote to memory of 2136	1760	Quotationpdf.exe	33
PID 1760 wrote to memory of 2136	1760	Quotationpdf.exe	33
PID 1760 wrote to memory of 2644	1760	Quotationpdf.exe	36
PID 1760 wrote to memory of 2644	1760	Quotationpdf.exe	36
PID 1760 wrote to memory of 2644	1760	Quotationpdf.exe	36
PID 1760 wrote to memory of 2644	1760	Quotationpdf.exe	36
PID 1760 wrote to memory of 2872	1760	Quotationpdf.exe	37
PID 1760 wrote to memory of 2872	1760	Quotationpdf.exe	37
PID 1760 wrote to memory of 2872	1760	Quotationpdf.exe	37
PID 1760 wrote to memory of 2872	1760	Quotationpdf.exe	37
PID 1760 wrote to memory of 2872	1760	Quotationpdf.exe	37
PID 1760 wrote to memory of 2872	1760	Quotationpdf.exe	37
PID 1760 wrote to memory of 2872	1760	Quotationpdf.exe	37
PID 1760 wrote to memory of 2872	1760	Quotationpdf.exe	37
PID 1760 wrote to memory of 2872	1760	Quotationpdf.exe	37
PID 1760 wrote to memory of 2872	1760	Quotationpdf.exe	37
PID 1760 wrote to memory of 2872	1760	Quotationpdf.exe	37
PID 1760 wrote to memory of 2872	1760	Quotationpdf.exe	37
PID 1760 wrote to memory of 2872	1760	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:1760
- 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:2700
- 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:2748
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\BptXqGmS" /XML "C:\Users\Admin\AppData\Local\Temp\tmp9260.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2136
- C:\Users\Admin\AppData\Local\Temp\Quotationpdf.exe
  "C:\Users\Admin\AppData\Local\Temp\Quotationpdf.exe"
  2⤵
  PID:2644
- C:\Users\Admin\AppData\Local\Temp\Quotationpdf.exe
  "C:\Users\Admin\AppData\Local\Temp\Quotationpdf.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2872

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\tmp9260.tmp

Filesize
1KB

MD5
afc2aa63a6f9cb9c80005b9f12bca2b4

SHA1
dafc6abee1e26eb28390c4610dac651c38b9f45e

SHA256
8f268a7a51408d33721fdde96c6ba5ef2a3340ea3a2946185647edf2adeb0641

SHA512
cb0bec362ce1a2f937193e00fda6a7633d2198c13b824d7feb000393e22159b892664353ced565b3915ee4d4a0c62b7b042dc12a607e6d44c38b1108b82134c6

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

Filesize
7KB

MD5
afd27751847c663e51ea4cac7088c86e

SHA1
e41b0b6b162ed8f1a7a466a1e85d84e55869ad06

SHA256
4260f119a456942db2bc46ba89ae89855635aa1516d848d88df66f6a2b096c3f

SHA512
043034057c7974c35059bf07a29396db200b3f5c619f12129991a239c0305a6a654a99862d25c9b04ae009d39f97d470a6cbf5afa70094615994d7d4e204d17a

Download Submit
memory/1760-0-0x00000000744BE000-0x00000000744BF000-memory.dmp

Filesize
4KB

Download
memory/1760-1-0x0000000000F60000-0x0000000001040000-memory.dmp

Filesize
896KB

Download
memory/1760-2-0x00000000744B0000-0x0000000074B9E000-memory.dmp

Filesize
6.9MB

Download
memory/1760-3-0x0000000000260000-0x0000000000270000-memory.dmp

Filesize
64KB

Download
memory/1760-4-0x00000000744B0000-0x0000000074B9E000-memory.dmp

Filesize
6.9MB

Download
memory/1760-5-0x0000000005650000-0x000000000570E000-memory.dmp

Filesize
760KB

Download
memory/1760-39-0x00000000744B0000-0x0000000074B9E000-memory.dmp

Filesize
6.9MB

Download
memory/2872-28-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2872-40-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2872-36-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2872-35-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2872-34-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2872-32-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2872-30-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2872-38-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2872-26-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2872-24-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2872-22-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2872-20-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2872-18-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2872-37-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2872-41-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2872-42-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2872-43-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2872-44-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2872-47-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2872-48-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2872-49-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2872-50-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2872-51-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2872-52-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2872-53-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2872-54-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download