remcos | 71deef76733c0d00e1d155a32d3a9306755745406beb9d1dcd46508bc7ed9841

Analysis

max time kernel
149s
max time network
131s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
28-11-2024 02:54

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General

Target

71deef76733c0d00e1d155a32d3a9306755745406beb9d1dcd46508bc7ed9841.exe
Size

819KB
MD5

9d56bd80b1c4c8849d290755e90f99cd
SHA1

e425c28f12e3b9f14957c713f431d0af6c337e11
SHA256

71deef76733c0d00e1d155a32d3a9306755745406beb9d1dcd46508bc7ed9841
SHA512

e624df0d1e77d6be023c4752297be2df921e375951e636322b6a11dfaf4556f8208ce4d7f0c4ef404d70157b67eb10ff415ca317603e11cda38e2a3c7ea3b9f4
SSDEEP

12288:5PgzOQ2fmLZL41rjVZL3ANOZNMMizbXrnzYLQgRyGh0ceOv:5Pi2fmLZM53AQZ/inbzYLQgR/h0ce

Score

10^/10

remcos remotehost discovery persistence rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

41.216.183.218:56792

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-I5RS8V
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
Remcos family
remcos

Executes dropped EXE 2 IoCs

pid	Process
2616	8738.exe
1756	8738.exe

Loads dropped DLL 2 IoCs

pid	Process
2364	cmd.exe
2364	cmd.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3063565911-2056067323-3330884624-1000\Software\Microsoft\Windows\CurrentVersion\Run\8738 = "C:\\Users\\Admin\\AppData\\Roaming\\8738\\8738.exe"	reg.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2616 set thread context of 1756	2616	8738.exe	40

System Location Discovery: System Language Discovery 1 TTPs 9 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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	8738.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	8738.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	71deef76733c0d00e1d155a32d3a9306755745406beb9d1dcd46508bc7ed9841.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.EXE

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 5 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
2540	cmd.exe
1672	PING.EXE
2364	cmd.exe
2736	PING.EXE
2628	PING.EXE

Runs ping.exe 1 TTPs 3 IoCs

Remote System Discovery

T1018

pid	Process
1672	PING.EXE
2736	PING.EXE
2628	PING.EXE

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
3044	71deef76733c0d00e1d155a32d3a9306755745406beb9d1dcd46508bc7ed9841.exe
3044	71deef76733c0d00e1d155a32d3a9306755745406beb9d1dcd46508bc7ed9841.exe
3044	71deef76733c0d00e1d155a32d3a9306755745406beb9d1dcd46508bc7ed9841.exe
3044	71deef76733c0d00e1d155a32d3a9306755745406beb9d1dcd46508bc7ed9841.exe
3044	71deef76733c0d00e1d155a32d3a9306755745406beb9d1dcd46508bc7ed9841.exe
3044	71deef76733c0d00e1d155a32d3a9306755745406beb9d1dcd46508bc7ed9841.exe
2616	8738.exe
2616	8738.exe
2616	8738.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3044	71deef76733c0d00e1d155a32d3a9306755745406beb9d1dcd46508bc7ed9841.exe
Token: SeDebugPrivilege	2616	8738.exe

Suspicious use of WriteProcessMemory 41 IoCs

description	pid	Process	procid_target
PID 3044 wrote to memory of 2540	3044	71deef76733c0d00e1d155a32d3a9306755745406beb9d1dcd46508bc7ed9841.exe	30
PID 3044 wrote to memory of 2540	3044	71deef76733c0d00e1d155a32d3a9306755745406beb9d1dcd46508bc7ed9841.exe	30
PID 3044 wrote to memory of 2540	3044	71deef76733c0d00e1d155a32d3a9306755745406beb9d1dcd46508bc7ed9841.exe	30
PID 3044 wrote to memory of 2540	3044	71deef76733c0d00e1d155a32d3a9306755745406beb9d1dcd46508bc7ed9841.exe	30
PID 2540 wrote to memory of 1672	2540	cmd.exe	32
PID 2540 wrote to memory of 1672	2540	cmd.exe	32
PID 2540 wrote to memory of 1672	2540	cmd.exe	32
PID 2540 wrote to memory of 1672	2540	cmd.exe	32
PID 3044 wrote to memory of 2364	3044	71deef76733c0d00e1d155a32d3a9306755745406beb9d1dcd46508bc7ed9841.exe	33
PID 3044 wrote to memory of 2364	3044	71deef76733c0d00e1d155a32d3a9306755745406beb9d1dcd46508bc7ed9841.exe	33
PID 3044 wrote to memory of 2364	3044	71deef76733c0d00e1d155a32d3a9306755745406beb9d1dcd46508bc7ed9841.exe	33
PID 3044 wrote to memory of 2364	3044	71deef76733c0d00e1d155a32d3a9306755745406beb9d1dcd46508bc7ed9841.exe	33
PID 2364 wrote to memory of 2736	2364	cmd.exe	35
PID 2364 wrote to memory of 2736	2364	cmd.exe	35
PID 2364 wrote to memory of 2736	2364	cmd.exe	35
PID 2364 wrote to memory of 2736	2364	cmd.exe	35
PID 2540 wrote to memory of 2724	2540	cmd.exe	37
PID 2540 wrote to memory of 2724	2540	cmd.exe	37
PID 2540 wrote to memory of 2724	2540	cmd.exe	37
PID 2540 wrote to memory of 2724	2540	cmd.exe	37
PID 2364 wrote to memory of 2628	2364	cmd.exe	38
PID 2364 wrote to memory of 2628	2364	cmd.exe	38
PID 2364 wrote to memory of 2628	2364	cmd.exe	38
PID 2364 wrote to memory of 2628	2364	cmd.exe	38
PID 2364 wrote to memory of 2616	2364	cmd.exe	39
PID 2364 wrote to memory of 2616	2364	cmd.exe	39
PID 2364 wrote to memory of 2616	2364	cmd.exe	39
PID 2364 wrote to memory of 2616	2364	cmd.exe	39
PID 2616 wrote to memory of 1756	2616	8738.exe	40
PID 2616 wrote to memory of 1756	2616	8738.exe	40
PID 2616 wrote to memory of 1756	2616	8738.exe	40
PID 2616 wrote to memory of 1756	2616	8738.exe	40
PID 2616 wrote to memory of 1756	2616	8738.exe	40
PID 2616 wrote to memory of 1756	2616	8738.exe	40
PID 2616 wrote to memory of 1756	2616	8738.exe	40
PID 2616 wrote to memory of 1756	2616	8738.exe	40
PID 2616 wrote to memory of 1756	2616	8738.exe	40
PID 2616 wrote to memory of 1756	2616	8738.exe	40
PID 2616 wrote to memory of 1756	2616	8738.exe	40
PID 2616 wrote to memory of 1756	2616	8738.exe	40
PID 2616 wrote to memory of 1756	2616	8738.exe	40

C:\Users\Admin\AppData\Local\Temp\71deef76733c0d00e1d155a32d3a9306755745406beb9d1dcd46508bc7ed9841.exe
"C:\Users\Admin\AppData\Local\Temp\71deef76733c0d00e1d155a32d3a9306755745406beb9d1dcd46508bc7ed9841.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3044
- C:\Windows\SysWOW64\cmd.exe
  "cmd" /c ping 127.0.0.1 -n 8 > nul && REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "8738" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\8738\8738.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:2540
- - C:\Windows\SysWOW64\PING.EXE
    ping 127.0.0.1 -n 8
    3⤵
    - System Location Discovery: System Language Discovery
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:1672
- - C:\Windows\SysWOW64\reg.exe
    REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "8738" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\8738\8738.exe"
    3⤵
    - Adds Run key to start application
    - System Location Discovery: System Language Discovery
    PID:2724
- C:\Windows\SysWOW64\cmd.exe
  "cmd" /c ping 127.0.0.1 -n 12 > nul && copy "C:\Users\Admin\AppData\Local\Temp\71deef76733c0d00e1d155a32d3a9306755745406beb9d1dcd46508bc7ed9841.exe" "C:\Users\Admin\AppData\Roaming\8738\8738.exe" && ping 127.0.0.1 -n 12 > nul && "C:\Users\Admin\AppData\Roaming\8738\8738.exe"
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:2364
- - C:\Windows\SysWOW64\PING.EXE
    ping 127.0.0.1 -n 12
    3⤵
    - System Location Discovery: System Language Discovery
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:2736
- - C:\Windows\SysWOW64\PING.EXE
    ping 127.0.0.1 -n 12
    3⤵
    - System Location Discovery: System Language Discovery
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:2628
- - C:\Users\Admin\AppData\Roaming\8738\8738.exe
    "C:\Users\Admin\AppData\Roaming\8738\8738.exe"
    3⤵
    - 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:2616
  - - C:\Users\Admin\AppData\Roaming\8738\8738.exe
      "C:\Users\Admin\AppData\Roaming\8738\8738.exe"
      4⤵
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      PID:1756

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Remote System Discovery

T1018

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

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Downloads

\Users\Admin\AppData\Roaming\8738\8738.exe

Filesize
819KB

MD5
9d56bd80b1c4c8849d290755e90f99cd

SHA1
e425c28f12e3b9f14957c713f431d0af6c337e11

SHA256
71deef76733c0d00e1d155a32d3a9306755745406beb9d1dcd46508bc7ed9841

SHA512
e624df0d1e77d6be023c4752297be2df921e375951e636322b6a11dfaf4556f8208ce4d7f0c4ef404d70157b67eb10ff415ca317603e11cda38e2a3c7ea3b9f4

Download Submit
memory/1756-37-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1756-41-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1756-24-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1756-47-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1756-22-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1756-48-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1756-45-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1756-46-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1756-18-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1756-34-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1756-32-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1756-20-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1756-28-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1756-26-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1756-44-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1756-42-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1756-30-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1756-35-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1756-39-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1756-38-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1756-40-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2616-17-0x0000000000440000-0x0000000000446000-memory.dmp

Filesize
24KB

Download
memory/2616-16-0x0000000000420000-0x000000000043A000-memory.dmp

Filesize
104KB

Download
memory/2616-15-0x0000000000F00000-0x0000000000FD4000-memory.dmp

Filesize
848KB

Download
memory/3044-0-0x000000007472E000-0x000000007472F000-memory.dmp

Filesize
4KB

Download
memory/3044-2-0x0000000074720000-0x0000000074E0E000-memory.dmp

Filesize
6.9MB

Download
memory/3044-1-0x0000000000060000-0x0000000000134000-memory.dmp

Filesize
848KB

Download
memory/3044-3-0x0000000004620000-0x0000000004646000-memory.dmp

Filesize
152KB

Download
memory/3044-4-0x0000000074720000-0x0000000074E0E000-memory.dmp

Filesize
6.9MB

Download