remcos | e77ceac98f08984fc5fadbe08e184d75b8e6a172b5ab8bfe2e77d8321158d340

Analysis

max time kernel
11s
max time network
11s
platform
windows7_x64
resource
win7v20201028
submitted
09/11/2020, 20:29

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General

Target
e77ceac98f08984fc5fadbe08e184d75b8e6a172b5ab8bfe2e77d8321158d340.exe
Size 1.1MB
Sample201109-vehyprmkbe
SHA256 e77ceac98f08984fc5fadbe08e184d75b8e6a172b5ab8bfe2e77d8321158d340
MD5 f2cd52a50bfc7f23dfd78b2dbf52eedc
SHA1 1363783835b1a36e4ca9e2abf06f68782272dbf1
SHA512 8381ef5c5fad34175b7ea7c667c7b5bcc2dab3231cbd503f92c0a22afe102a6319d3056d0f13fb7b050c605ebb203efdaf9c835bb8a0b2ce0df6e78f1710fd82
MD5 SHA1 SHA512

Score

10^/10

remcos persistence rat

Malware Config

Extracted

Family

remcos

daya4659.ddns.net:8282

Signatures

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

Executes dropped EXE 2 IoCs

pid	Process
1460	remcos.exe
540	remcos.exe

Loads dropped DLL 1 IoCs

pid	Process
1596	cmd.exe

Adds Run key to start application 2 TTPs 8 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\remcos = "\"C:\\Users\\Admin\\AppData\\Roaming\\remcos\\remcos.exe\""	remcos.exe
Key created	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Windows\CurrentVersion\Run\	e77ceac98f08984fc5fadbe08e184d75b8e6a172b5ab8bfe2e77d8321158d340.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Windows\CurrentVersion\Run\remcos = "\"C:\\Users\\Admin\\AppData\\Roaming\\remcos\\remcos.exe\""	e77ceac98f08984fc5fadbe08e184d75b8e6a172b5ab8bfe2e77d8321158d340.exe
Key created	\REGISTRY\MACHINE\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\	e77ceac98f08984fc5fadbe08e184d75b8e6a172b5ab8bfe2e77d8321158d340.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\remcos = "\"C:\\Users\\Admin\\AppData\\Roaming\\remcos\\remcos.exe\""	e77ceac98f08984fc5fadbe08e184d75b8e6a172b5ab8bfe2e77d8321158d340.exe
Key created	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Windows\CurrentVersion\Run\	remcos.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Windows\CurrentVersion\Run\remcos = "\"C:\\Users\\Admin\\AppData\\Roaming\\remcos\\remcos.exe\""	remcos.exe
Key created	\REGISTRY\MACHINE\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\	remcos.exe

Suspicious use of SetThreadContext 5 IoCs

description	pid	Process	procid_target
PID 1588 set thread context of 1956	1588	e77ceac98f08984fc5fadbe08e184d75b8e6a172b5ab8bfe2e77d8321158d340.exe	26
PID 1460 set thread context of 540	1460	remcos.exe	36
PID 540 set thread context of 956	540	remcos.exe	37
PID 540 set thread context of 1568	540	remcos.exe	40
PID 540 set thread context of 1344	540	remcos.exe	41

Creates scheduled task(s) 1 TTPs 2 IoCs

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

persistence

Scheduled Task

T1053

pid	Process
1168	schtasks.exe
1464	schtasks.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
540	remcos.exe

Suspicious use of WriteProcessMemory 77 IoCs

description	pid	Process	procid_target
PID 1588 wrote to memory of 1956	1588	e77ceac98f08984fc5fadbe08e184d75b8e6a172b5ab8bfe2e77d8321158d340.exe	26
PID 1588 wrote to memory of 1956	1588	e77ceac98f08984fc5fadbe08e184d75b8e6a172b5ab8bfe2e77d8321158d340.exe	26
PID 1588 wrote to memory of 1956	1588	e77ceac98f08984fc5fadbe08e184d75b8e6a172b5ab8bfe2e77d8321158d340.exe	26
PID 1588 wrote to memory of 1956	1588	e77ceac98f08984fc5fadbe08e184d75b8e6a172b5ab8bfe2e77d8321158d340.exe	26
PID 1588 wrote to memory of 1956	1588	e77ceac98f08984fc5fadbe08e184d75b8e6a172b5ab8bfe2e77d8321158d340.exe	26
PID 1588 wrote to memory of 1956	1588	e77ceac98f08984fc5fadbe08e184d75b8e6a172b5ab8bfe2e77d8321158d340.exe	26
PID 1588 wrote to memory of 1168	1588	e77ceac98f08984fc5fadbe08e184d75b8e6a172b5ab8bfe2e77d8321158d340.exe	27
PID 1588 wrote to memory of 1168	1588	e77ceac98f08984fc5fadbe08e184d75b8e6a172b5ab8bfe2e77d8321158d340.exe	27
PID 1588 wrote to memory of 1168	1588	e77ceac98f08984fc5fadbe08e184d75b8e6a172b5ab8bfe2e77d8321158d340.exe	27
PID 1588 wrote to memory of 1168	1588	e77ceac98f08984fc5fadbe08e184d75b8e6a172b5ab8bfe2e77d8321158d340.exe	27
PID 1956 wrote to memory of 1720	1956	e77ceac98f08984fc5fadbe08e184d75b8e6a172b5ab8bfe2e77d8321158d340.exe	29
PID 1956 wrote to memory of 1720	1956	e77ceac98f08984fc5fadbe08e184d75b8e6a172b5ab8bfe2e77d8321158d340.exe	29
PID 1956 wrote to memory of 1720	1956	e77ceac98f08984fc5fadbe08e184d75b8e6a172b5ab8bfe2e77d8321158d340.exe	29
PID 1956 wrote to memory of 1720	1956	e77ceac98f08984fc5fadbe08e184d75b8e6a172b5ab8bfe2e77d8321158d340.exe	29
PID 1720 wrote to memory of 1596	1720	WScript.exe	33
PID 1720 wrote to memory of 1596	1720	WScript.exe	33
PID 1720 wrote to memory of 1596	1720	WScript.exe	33
PID 1720 wrote to memory of 1596	1720	WScript.exe	33
PID 1596 wrote to memory of 1460	1596	cmd.exe	35
PID 1596 wrote to memory of 1460	1596	cmd.exe	35
PID 1596 wrote to memory of 1460	1596	cmd.exe	35
PID 1596 wrote to memory of 1460	1596	cmd.exe	35
PID 1460 wrote to memory of 540	1460	remcos.exe	36
PID 1460 wrote to memory of 540	1460	remcos.exe	36
PID 1460 wrote to memory of 540	1460	remcos.exe	36
PID 1460 wrote to memory of 540	1460	remcos.exe	36
PID 1460 wrote to memory of 540	1460	remcos.exe	36
PID 1460 wrote to memory of 540	1460	remcos.exe	36
PID 540 wrote to memory of 956	540	remcos.exe	37
PID 540 wrote to memory of 956	540	remcos.exe	37
PID 540 wrote to memory of 956	540	remcos.exe	37
PID 540 wrote to memory of 956	540	remcos.exe	37
PID 540 wrote to memory of 956	540	remcos.exe	37
PID 540 wrote to memory of 956	540	remcos.exe	37
PID 540 wrote to memory of 956	540	remcos.exe	37
PID 540 wrote to memory of 956	540	remcos.exe	37
PID 540 wrote to memory of 956	540	remcos.exe	37
PID 540 wrote to memory of 956	540	remcos.exe	37
PID 540 wrote to memory of 956	540	remcos.exe	37
PID 1460 wrote to memory of 1464	1460	remcos.exe	38
PID 1460 wrote to memory of 1464	1460	remcos.exe	38
PID 1460 wrote to memory of 1464	1460	remcos.exe	38
PID 1460 wrote to memory of 1464	1460	remcos.exe	38
PID 540 wrote to memory of 1568	540	remcos.exe	40
PID 540 wrote to memory of 1568	540	remcos.exe	40
PID 540 wrote to memory of 1568	540	remcos.exe	40
PID 540 wrote to memory of 1568	540	remcos.exe	40
PID 540 wrote to memory of 1568	540	remcos.exe	40
PID 540 wrote to memory of 1568	540	remcos.exe	40
PID 540 wrote to memory of 1568	540	remcos.exe	40
PID 540 wrote to memory of 1568	540	remcos.exe	40
PID 540 wrote to memory of 1568	540	remcos.exe	40
PID 540 wrote to memory of 1568	540	remcos.exe	40
PID 540 wrote to memory of 1568	540	remcos.exe	40
PID 540 wrote to memory of 1344	540	remcos.exe	41
PID 540 wrote to memory of 1344	540	remcos.exe	41
PID 540 wrote to memory of 1344	540	remcos.exe	41
PID 540 wrote to memory of 1344	540	remcos.exe	41
PID 540 wrote to memory of 1344	540	remcos.exe	41
PID 540 wrote to memory of 1344	540	remcos.exe	41
PID 540 wrote to memory of 1344	540	remcos.exe	41
PID 540 wrote to memory of 1344	540	remcos.exe	41
PID 540 wrote to memory of 1344	540	remcos.exe	41
PID 540 wrote to memory of 1344	540	remcos.exe	41
PID 540 wrote to memory of 1344	540	remcos.exe	41
PID 540 wrote to memory of 1320	540	remcos.exe	42
PID 540 wrote to memory of 1320	540	remcos.exe	42
PID 540 wrote to memory of 1320	540	remcos.exe	42
PID 540 wrote to memory of 1320	540	remcos.exe	42
PID 540 wrote to memory of 672	540	remcos.exe	43
PID 540 wrote to memory of 672	540	remcos.exe	43
PID 540 wrote to memory of 672	540	remcos.exe	43
PID 540 wrote to memory of 672	540	remcos.exe	43
PID 540 wrote to memory of 1984	540	remcos.exe	44
PID 540 wrote to memory of 1984	540	remcos.exe	44
PID 540 wrote to memory of 1984	540	remcos.exe	44
PID 540 wrote to memory of 1984	540	remcos.exe	44

C:\Users\Admin\AppData\Local\Temp\e77ceac98f08984fc5fadbe08e184d75b8e6a172b5ab8bfe2e77d8321158d340.exe
"C:\Users\Admin\AppData\Local\Temp\e77ceac98f08984fc5fadbe08e184d75b8e6a172b5ab8bfe2e77d8321158d340.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1588
- C:\Users\Admin\AppData\Local\Temp\e77ceac98f08984fc5fadbe08e184d75b8e6a172b5ab8bfe2e77d8321158d340.exe
  "C:\Users\Admin\AppData\Local\Temp\e77ceac98f08984fc5fadbe08e184d75b8e6a172b5ab8bfe2e77d8321158d340.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious use of WriteProcessMemory
  PID:1956
- - C:\Windows\SysWOW64\WScript.exe
    "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\install.vbs"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1720
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c "C:\Users\Admin\AppData\Roaming\remcos\remcos.exe"
      4⤵
      Loads dropped DLL
      Suspicious use of WriteProcessMemory
      PID:1596
    - - C:\Users\Admin\AppData\Roaming\remcos\remcos.exe
        
        C:\Users\Admin\AppData\Roaming\remcos\remcos.exe
        5⤵
        Executes dropped EXE
        Suspicious use of SetThreadContext
        Suspicious use of WriteProcessMemory
        
        PID:1460
      - 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
        Suspicious use of SetThreadContext
        Suspicious use of SetWindowsHookEx
        Suspicious use of WriteProcessMemory
        
        PID:540
        
        C:\Windows\SysWOW64\svchost.exe
        
        C:\Windows\SysWOW64\svchost.exe
        7⤵
        
        PID:956
        
        C:\Windows\SysWOW64\svchost.exe
        
        C:\Windows\SysWOW64\svchost.exe
        7⤵
        
        PID:1568
        
        C:\Windows\SysWOW64\svchost.exe
        
        C:\Windows\SysWOW64\svchost.exe
        7⤵
        
        PID:1344
        
        C:\Windows\SysWOW64\svchost.exe
        
        C:\Windows\SysWOW64\svchost.exe
        7⤵
        
        PID:1320
        
        C:\Windows\SysWOW64\svchost.exe
        
        C:\Windows\SysWOW64\svchost.exe
        7⤵
        
        PID:672
        
        C:\Windows\SysWOW64\svchost.exe
        
        C:\Windows\SysWOW64\svchost.exe
        7⤵
        
        PID:1984
      - C:\Windows\SysWOW64\schtasks.exe
        
        "C:\Windows\SysWOW64\schtasks.exe" /create /tn setx /tr "C:\Users\Admin\AppData\Roaming\CapabilityAccessHandlers\sfc.exe" /sc minute /mo 1 /F
        6⤵
        Creates scheduled task(s)
        
        PID:1464
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\SysWOW64\schtasks.exe" /create /tn setx /tr "C:\Users\Admin\AppData\Roaming\CapabilityAccessHandlers\sfc.exe" /sc minute /mo 1 /F
  2⤵
  - Creates scheduled task(s)
  PID:1168

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Registry Run Keys / Startup Folder

T1060

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/540-11-0x00000000000D0000-0x00000000000F0000-memory.dmp

Download

memory/956-15-0x0000000000400000-0x0000000000526000-memory.dmp

Download

memory/956-17-0x0000000000400000-0x0000000000526000-memory.dmp

Download

memory/1344-24-0x0000000000400000-0x0000000000526000-memory.dmp

Download

memory/1568-21-0x0000000000400000-0x0000000000526000-memory.dmp

Download

memory/1720-6-0x00000000025D0000-0x00000000025D4000-memory.dmp

Download

memory/1956-0-0x0000000000080000-0x00000000000A0000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads