remcos | a87c27d613d16ecdc66c26d338c834c9b721e544b702b00b8a0728806ff77086

Analysis

max time kernel
149s
max time network
150s
platform
windows7_x64
resource
win7-20241023-en
resource tags

arch:x64arch:x86image:win7-20241023-enlocale:en-usos:windows7-x64system
submitted
21-12-2024 22:09

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General

Target

Shipping Document PL& BL 00980 ,pdf.exe
Size

902KB
MD5

1a5c59aeb8ec99b73bc89056e63805c0
SHA1

25602dcef8fb46b22e954f225483f3e3617a0261
SHA256

3b1b352f3c4d0fe235b45d9db418e1e4155ab31265ee368ed646ac38071a2eda
SHA512

a021ff6a08bf44ec06c8e884d2dca83eb161a86e8a8b638a19274e8900746a63a8219271f030c336eb3db61d8765da60a853a21785ef35ec4314f81bcd130a6c
SSDEEP

12288:2HsJlkbMylWnvSx/KG3EaXZK2bq5RILVO1Y+LG9hSmfE:+eCQZvq939ZM5RIqYTm6

Score

10^/10

remcos ngozi2021 discovery persistence rat

Malware Config

Extracted

Family

remcos

Version

2.7.2 Pro

Botnet

NGOZI2021

favour2021.ddns.net:1990

Attributes

audio_folder
MicRecords
audio_path
%AppData%
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
true
install_path
%AppData%
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
keylog_path
%AppData%
mouse_option
false
mutex
Remcos-EW6A42
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
take_screenshot_title
wikipedia;solitaire;

Signatures

Remcos
Remcos is a closed-source remote control and surveillance software.
rat remcos
Remcos family
remcos

.NET Reactor proctector 1 IoCs

Detects an executable protected by an unregistered version of Eziriz's .NET Reactor.

resource	yara_rule
behavioral1/memory/2852-3-0x00000000003C0000-0x00000000003D8000-memory.dmp	net_reactor

Executes dropped EXE 2 IoCs

pid	Process
2920	remcos.exe
560	remcos.exe

Loads dropped DLL 1 IoCs

pid	Process
2904	cmd.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1163522206-1469769407-485553996-1000\Software\Microsoft\Windows\CurrentVersion\Run\Remcos = "\"C:\\Users\\Admin\\AppData\\Roaming\\Remcos\\remcos.exe\""	Shipping Document PL& BL 00980 ,pdf.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1163522206-1469769407-485553996-1000\Software\Microsoft\Windows\CurrentVersion\Run\Remcos = "\"C:\\Users\\Admin\\AppData\\Roaming\\Remcos\\remcos.exe\""	remcos.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2852 set thread context of 1720	2852	Shipping Document PL& BL 00980 ,pdf.exe	33
PID 2920 set thread context of 560	2920	remcos.exe	40

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 8 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	WScript.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	remcos.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	remcos.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Shipping Document PL& BL 00980 ,pdf.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Shipping Document PL& BL 00980 ,pdf.exe

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
2852	Shipping Document PL& BL 00980 ,pdf.exe
1720	Shipping Document PL& BL 00980 ,pdf.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
1260	schtasks.exe
1300	schtasks.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2920	remcos.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2920	remcos.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
560	remcos.exe

Suspicious use of WriteProcessMemory 42 IoCs

description	pid	Process	procid_target
PID 2852 wrote to memory of 1300	2852	Shipping Document PL& BL 00980 ,pdf.exe	31
PID 2852 wrote to memory of 1300	2852	Shipping Document PL& BL 00980 ,pdf.exe	31
PID 2852 wrote to memory of 1300	2852	Shipping Document PL& BL 00980 ,pdf.exe	31
PID 2852 wrote to memory of 1300	2852	Shipping Document PL& BL 00980 ,pdf.exe	31
PID 2852 wrote to memory of 1720	2852	Shipping Document PL& BL 00980 ,pdf.exe	33
PID 2852 wrote to memory of 1720	2852	Shipping Document PL& BL 00980 ,pdf.exe	33
PID 2852 wrote to memory of 1720	2852	Shipping Document PL& BL 00980 ,pdf.exe	33
PID 2852 wrote to memory of 1720	2852	Shipping Document PL& BL 00980 ,pdf.exe	33
PID 2852 wrote to memory of 1720	2852	Shipping Document PL& BL 00980 ,pdf.exe	33
PID 2852 wrote to memory of 1720	2852	Shipping Document PL& BL 00980 ,pdf.exe	33
PID 2852 wrote to memory of 1720	2852	Shipping Document PL& BL 00980 ,pdf.exe	33
PID 2852 wrote to memory of 1720	2852	Shipping Document PL& BL 00980 ,pdf.exe	33
PID 2852 wrote to memory of 1720	2852	Shipping Document PL& BL 00980 ,pdf.exe	33
PID 2852 wrote to memory of 1720	2852	Shipping Document PL& BL 00980 ,pdf.exe	33
PID 2852 wrote to memory of 1720	2852	Shipping Document PL& BL 00980 ,pdf.exe	33
PID 1720 wrote to memory of 2988	1720	Shipping Document PL& BL 00980 ,pdf.exe	34
PID 1720 wrote to memory of 2988	1720	Shipping Document PL& BL 00980 ,pdf.exe	34
PID 1720 wrote to memory of 2988	1720	Shipping Document PL& BL 00980 ,pdf.exe	34
PID 1720 wrote to memory of 2988	1720	Shipping Document PL& BL 00980 ,pdf.exe	34
PID 2988 wrote to memory of 2904	2988	WScript.exe	35
PID 2988 wrote to memory of 2904	2988	WScript.exe	35
PID 2988 wrote to memory of 2904	2988	WScript.exe	35
PID 2988 wrote to memory of 2904	2988	WScript.exe	35
PID 2904 wrote to memory of 2920	2904	cmd.exe	37
PID 2904 wrote to memory of 2920	2904	cmd.exe	37
PID 2904 wrote to memory of 2920	2904	cmd.exe	37
PID 2904 wrote to memory of 2920	2904	cmd.exe	37
PID 2920 wrote to memory of 1260	2920	remcos.exe	38
PID 2920 wrote to memory of 1260	2920	remcos.exe	38
PID 2920 wrote to memory of 1260	2920	remcos.exe	38
PID 2920 wrote to memory of 1260	2920	remcos.exe	38
PID 2920 wrote to memory of 560	2920	remcos.exe	40
PID 2920 wrote to memory of 560	2920	remcos.exe	40
PID 2920 wrote to memory of 560	2920	remcos.exe	40
PID 2920 wrote to memory of 560	2920	remcos.exe	40
PID 2920 wrote to memory of 560	2920	remcos.exe	40
PID 2920 wrote to memory of 560	2920	remcos.exe	40
PID 2920 wrote to memory of 560	2920	remcos.exe	40
PID 2920 wrote to memory of 560	2920	remcos.exe	40
PID 2920 wrote to memory of 560	2920	remcos.exe	40
PID 2920 wrote to memory of 560	2920	remcos.exe	40
PID 2920 wrote to memory of 560	2920	remcos.exe	40

C:\Users\Admin\AppData\Local\Temp\Shipping Document PL& BL 00980 ,pdf.exe
"C:\Users\Admin\AppData\Local\Temp\Shipping Document PL& BL 00980 ,pdf.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- System Network Configuration Discovery: Internet Connection Discovery
- Suspicious use of WriteProcessMemory
PID:2852
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\IdXhNheuy" /XML "C:\Users\Admin\AppData\Local\Temp\tmp5BE6.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:1300
- C:\Users\Admin\AppData\Local\Temp\Shipping Document PL& BL 00980 ,pdf.exe
  "C:\Users\Admin\AppData\Local\Temp\Shipping Document PL& BL 00980 ,pdf.exe"
  2⤵
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:1720
- - C:\Windows\SysWOW64\WScript.exe
    "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\install.vbs"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2988
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c "C:\Users\Admin\AppData\Roaming\Remcos\remcos.exe"
      4⤵
      Loads dropped DLL
      System Location Discovery: System Language Discovery
      Suspicious use of WriteProcessMemory
      PID:2904
    - - C:\Users\Admin\AppData\Roaming\Remcos\remcos.exe
        
        C:\Users\Admin\AppData\Roaming\Remcos\remcos.exe
        5⤵
        Executes dropped EXE
        Suspicious use of SetThreadContext
        System Location Discovery: System Language Discovery
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        Suspicious use of WriteProcessMemory
        
        PID:2920
      - C:\Windows\SysWOW64\schtasks.exe
        
        "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\IdXhNheuy" /XML "C:\Users\Admin\AppData\Local\Temp\tmp57C1.tmp"
        6⤵
        System Location Discovery: System Language Discovery
        Scheduled Task/Job: Scheduled Task
        
        PID:1260
      - C:\Users\Admin\AppData\Roaming\Remcos\remcos.exe
        
        "C:\Users\Admin\AppData\Roaming\Remcos\remcos.exe"
        6⤵
        Executes dropped EXE
        Adds Run key to start application
        System Location Discovery: System Language Discovery
        Suspicious use of SetWindowsHookEx
        
        PID:560

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

System Network Configuration Discovery

T1016

Internet Connection Discovery

T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\install.vbs

Filesize
418B

MD5
b92d64fe5b1d1f59df4b738262aea8df

SHA1
c8fb1981759c2d9bb2ec91b705985fba5fc7af63

SHA256
fa20e9aab03dc8e9f1910aaf0cf42662379fa16ae3a22642084fb97fa3d4f83a

SHA512
2566248b93c0cfb0414f033b8dd18bbd4f88180093eac2861107289bcb4ee160f9593706ff1f7d1f2e4ecea430d67a5a2897551a4f9ebd82b707243e300520e2

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp5BE6.tmp

Filesize
1KB

MD5
cf6b40e36bf91ce9a5b525d88f0e6979

SHA1
9f23212c575a66d751eb935cf2c4fd1495fa48a9

SHA256
9f99948925c35fd10948d4864b6cc014fe890aa5ac36451123d05bb41ad69edd

SHA512
38a9545fca9d6667a285be64e4aa8d7e9a7ee9c5d427848f73d07cdf7f2867f0c750d2cfaeda025170a275d246ea2d4f7f6144fcc3cd22b7c48ddfa484761b5a

Download Submit
C:\Users\Admin\AppData\Roaming\Remcos\remcos.exe

Filesize
902KB

MD5
1a5c59aeb8ec99b73bc89056e63805c0

SHA1
25602dcef8fb46b22e954f225483f3e3617a0261

SHA256
3b1b352f3c4d0fe235b45d9db418e1e4155ab31265ee368ed646ac38071a2eda

SHA512
a021ff6a08bf44ec06c8e884d2dca83eb161a86e8a8b638a19274e8900746a63a8219271f030c336eb3db61d8765da60a853a21785ef35ec4314f81bcd130a6c

Download Submit
memory/560-66-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/560-65-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/560-55-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/560-58-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/560-59-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/560-62-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/560-63-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/1720-28-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/1720-12-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/1720-22-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/1720-20-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/1720-26-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/1720-18-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/1720-16-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/1720-29-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/1720-24-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1720-35-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/1720-14-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2852-0-0x00000000743FE000-0x00000000743FF000-memory.dmp

Filesize
4KB

Download
memory/2852-30-0x00000000743F0000-0x0000000074ADE000-memory.dmp

Filesize
6.9MB

Download
memory/2852-2-0x00000000743F0000-0x0000000074ADE000-memory.dmp

Filesize
6.9MB

Download
memory/2852-6-0x0000000004C70000-0x0000000004CCE000-memory.dmp

Filesize
376KB

Download
memory/2852-5-0x00000000743F0000-0x0000000074ADE000-memory.dmp

Filesize
6.9MB

Download
memory/2852-1-0x0000000000F50000-0x0000000001038000-memory.dmp

Filesize
928KB

Download
memory/2852-4-0x00000000743FE000-0x00000000743FF000-memory.dmp

Filesize
4KB

Download
memory/2852-3-0x00000000003C0000-0x00000000003D8000-memory.dmp

Filesize
96KB

Download
memory/2920-40-0x0000000000100000-0x00000000001E8000-memory.dmp

Filesize
928KB

Download