remcos | 49e7ee12a475105efab2e363450b2e5582fc05d114967fe57a3d80d22a2fea81

General

Target

Quotation_pdf.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
2892	powershell.exe
2576	powershell.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2244 set thread context of 3048	2244	Quotation_pdf.exe	34

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_pdf.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	Quotation_pdf.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
3008	schtasks.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2244	Quotation_pdf.exe
2244	Quotation_pdf.exe
2576	powershell.exe
2892	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2244	Quotation_pdf.exe
Token: SeDebugPrivilege	2576	powershell.exe
Token: SeDebugPrivilege	2892	powershell.exe

Suspicious use of WriteProcessMemory 25 IoCs

description	pid	Process	procid_target
PID 2244 wrote to memory of 2576	2244	Quotation_pdf.exe	28
PID 2244 wrote to memory of 2576	2244	Quotation_pdf.exe	28
PID 2244 wrote to memory of 2576	2244	Quotation_pdf.exe	28
PID 2244 wrote to memory of 2576	2244	Quotation_pdf.exe	28
PID 2244 wrote to memory of 2892	2244	Quotation_pdf.exe	30
PID 2244 wrote to memory of 2892	2244	Quotation_pdf.exe	30
PID 2244 wrote to memory of 2892	2244	Quotation_pdf.exe	30
PID 2244 wrote to memory of 2892	2244	Quotation_pdf.exe	30
PID 2244 wrote to memory of 3008	2244	Quotation_pdf.exe	32
PID 2244 wrote to memory of 3008	2244	Quotation_pdf.exe	32
PID 2244 wrote to memory of 3008	2244	Quotation_pdf.exe	32
PID 2244 wrote to memory of 3008	2244	Quotation_pdf.exe	32
PID 2244 wrote to memory of 3048	2244	Quotation_pdf.exe	34
PID 2244 wrote to memory of 3048	2244	Quotation_pdf.exe	34
PID 2244 wrote to memory of 3048	2244	Quotation_pdf.exe	34
PID 2244 wrote to memory of 3048	2244	Quotation_pdf.exe	34
PID 2244 wrote to memory of 3048	2244	Quotation_pdf.exe	34
PID 2244 wrote to memory of 3048	2244	Quotation_pdf.exe	34
PID 2244 wrote to memory of 3048	2244	Quotation_pdf.exe	34
PID 2244 wrote to memory of 3048	2244	Quotation_pdf.exe	34
PID 2244 wrote to memory of 3048	2244	Quotation_pdf.exe	34
PID 2244 wrote to memory of 3048	2244	Quotation_pdf.exe	34
PID 2244 wrote to memory of 3048	2244	Quotation_pdf.exe	34
PID 2244 wrote to memory of 3048	2244	Quotation_pdf.exe	34
PID 2244 wrote to memory of 3048	2244	Quotation_pdf.exe	34

C:\Users\Admin\AppData\Local\Temp\Quotation_pdf.exe
"C:\Users\Admin\AppData\Local\Temp\Quotation_pdf.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2244
- 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_pdf.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2576
- 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:2892
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\BptXqGmS" /XML "C:\Users\Admin\AppData\Local\Temp\tmpB30A.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:3008
- C:\Users\Admin\AppData\Local\Temp\Quotation_pdf.exe
  "C:\Users\Admin\AppData\Local\Temp\Quotation_pdf.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3048

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\tmpB30A.tmp

Filesize
1KB

MD5
9b7e8c14f5ff77a47bf80ba49d8ad596

SHA1
dc304f00cda9d41009965fd1c652e545f70548e1

SHA256
64e02574d8155f125a3618fb3d0d4269ff75f267fbef3b6e6e1ab8d870a87890

SHA512
3781621c2dafa9780190ebba9f49c3dcded74badb6b12b35247709e963f46362c5b2e47e5e62c0a75b5fbaf957b1fcfe3f476cc9173a76e82cfe8188924346fe

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\75UCK4A1LOKBUPYZRX2H.temp

Filesize
7KB

MD5
02e2565cd72ed3d1c5e11f9dd7a06973

SHA1
846fd82caaa95a9ae00d9396e5acb2c5ffed2a03

SHA256
2e1390eb11e896946ac6b0032a523c1eb3c9921ccf2065b6bb24b442dd166ee5

SHA512
d9e3940837cfa9d45370530e02d3d6b7dc2058972e58554e6ac3e3113e67e5120de7956c7783829593d6ccddffe1ba421198d8193a6b168069b2e413bebaad36

Download Submit
memory/2244-39-0x0000000074AB0000-0x000000007519E000-memory.dmp

Filesize
6.9MB

Download
memory/2244-1-0x0000000000D60000-0x0000000000E40000-memory.dmp

Filesize
896KB

Download
memory/2244-2-0x0000000074AB0000-0x000000007519E000-memory.dmp

Filesize
6.9MB

Download
memory/2244-3-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/2244-4-0x0000000074AB0000-0x000000007519E000-memory.dmp

Filesize
6.9MB

Download
memory/2244-5-0x0000000005650000-0x000000000570E000-memory.dmp

Filesize
760KB

Download
memory/2244-0-0x0000000074ABE000-0x0000000074ABF000-memory.dmp

Filesize
4KB

Download
memory/3048-28-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3048-40-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3048-38-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3048-37-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3048-36-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3048-34-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/3048-32-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3048-18-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3048-26-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3048-22-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3048-20-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3048-30-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3048-25-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3048-35-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3048-41-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3048-42-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3048-43-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3048-44-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3048-47-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3048-48-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3048-49-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3048-50-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3048-52-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3048-51-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3048-53-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3048-54-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads