remcos | 1befcab4a8d97cea8592fa608814f038fd956a5f1f2ddfd9ee8b9402045a705a

Analysis

max time kernel
148s
max time network
149s
platform
windows7_x64
resource
win7v200722
submitted
09/10/2020, 06:25

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General

Target
Dokumen penerimaan DHL 1190406570, pdf.exe
Size 608KB
Sample201009-qlgenzh62a
SHA256 1befcab4a8d97cea8592fa608814f038fd956a5f1f2ddfd9ee8b9402045a705a
MD5 01fec6f49769c6ce8790807c6f956e52
SHA1 bc2c53b6f35fcb3ba7f3b38c66448a5397fa9f57
SHA512 fde4334f374f6059e6aa8ca88bd91fddac2a1d3cf74477531eba20ab0a2eca5fd8590f39bdc35bb17e5abb1be795542517f93bcfb1d3118e118f7478a6b7ba4c
MD5 SHA1 SHA512

Score

10^/10

rat remcos persistence

Malware Config

Extracted

Family

remcos

doublegrace2020.ddns.net:7171

Signatures

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

Executes dropped EXE 2 IoCs

pid	Process
1372	remcos.exe
1272	remcos.exe

Loads dropped DLL 1 IoCs

pid	Process
764	cmd.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2090973689-680783404-4292415065-1000\Software\Microsoft\Windows\CurrentVersion\Run\	Dokumen penerimaan DHL 1190406570, pdf.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2090973689-680783404-4292415065-1000\Software\Microsoft\Windows\CurrentVersion\Run\Remcos = "\"C:\\Users\\Admin\\AppData\\Roaming\\Remcos\\remcos.exe\""	Dokumen penerimaan DHL 1190406570, pdf.exe
Key created	\REGISTRY\USER\S-1-5-21-2090973689-680783404-4292415065-1000\Software\Microsoft\Windows\CurrentVersion\Run\	remcos.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2090973689-680783404-4292415065-1000\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 540 set thread context of 2028	540	Dokumen penerimaan DHL 1190406570, pdf.exe	30
PID 1372 set thread context of 1272	1372	remcos.exe	37

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
2012	schtasks.exe
328	schtasks.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
540	Dokumen penerimaan DHL 1190406570, pdf.exe
1372	remcos.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	540	Dokumen penerimaan DHL 1190406570, pdf.exe
Token: SeDebugPrivilege	1372	remcos.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1272	remcos.exe

Suspicious use of WriteProcessMemory 42 IoCs

description	pid	Process	procid_target
PID 540 wrote to memory of 2012	540	Dokumen penerimaan DHL 1190406570, pdf.exe	28
PID 540 wrote to memory of 2012	540	Dokumen penerimaan DHL 1190406570, pdf.exe	28
PID 540 wrote to memory of 2012	540	Dokumen penerimaan DHL 1190406570, pdf.exe	28
PID 540 wrote to memory of 2012	540	Dokumen penerimaan DHL 1190406570, pdf.exe	28
PID 540 wrote to memory of 2028	540	Dokumen penerimaan DHL 1190406570, pdf.exe	30
PID 540 wrote to memory of 2028	540	Dokumen penerimaan DHL 1190406570, pdf.exe	30
PID 540 wrote to memory of 2028	540	Dokumen penerimaan DHL 1190406570, pdf.exe	30
PID 540 wrote to memory of 2028	540	Dokumen penerimaan DHL 1190406570, pdf.exe	30
PID 540 wrote to memory of 2028	540	Dokumen penerimaan DHL 1190406570, pdf.exe	30
PID 540 wrote to memory of 2028	540	Dokumen penerimaan DHL 1190406570, pdf.exe	30
PID 540 wrote to memory of 2028	540	Dokumen penerimaan DHL 1190406570, pdf.exe	30
PID 540 wrote to memory of 2028	540	Dokumen penerimaan DHL 1190406570, pdf.exe	30
PID 540 wrote to memory of 2028	540	Dokumen penerimaan DHL 1190406570, pdf.exe	30
PID 540 wrote to memory of 2028	540	Dokumen penerimaan DHL 1190406570, pdf.exe	30
PID 540 wrote to memory of 2028	540	Dokumen penerimaan DHL 1190406570, pdf.exe	30
PID 2028 wrote to memory of 2020	2028	Dokumen penerimaan DHL 1190406570, pdf.exe	31
PID 2028 wrote to memory of 2020	2028	Dokumen penerimaan DHL 1190406570, pdf.exe	31
PID 2028 wrote to memory of 2020	2028	Dokumen penerimaan DHL 1190406570, pdf.exe	31
PID 2028 wrote to memory of 2020	2028	Dokumen penerimaan DHL 1190406570, pdf.exe	31
PID 2020 wrote to memory of 764	2020	WScript.exe	32
PID 2020 wrote to memory of 764	2020	WScript.exe	32
PID 2020 wrote to memory of 764	2020	WScript.exe	32
PID 2020 wrote to memory of 764	2020	WScript.exe	32
PID 764 wrote to memory of 1372	764	cmd.exe	34
PID 764 wrote to memory of 1372	764	cmd.exe	34
PID 764 wrote to memory of 1372	764	cmd.exe	34
PID 764 wrote to memory of 1372	764	cmd.exe	34
PID 1372 wrote to memory of 328	1372	remcos.exe	35
PID 1372 wrote to memory of 328	1372	remcos.exe	35
PID 1372 wrote to memory of 328	1372	remcos.exe	35
PID 1372 wrote to memory of 328	1372	remcos.exe	35
PID 1372 wrote to memory of 1272	1372	remcos.exe	37
PID 1372 wrote to memory of 1272	1372	remcos.exe	37
PID 1372 wrote to memory of 1272	1372	remcos.exe	37
PID 1372 wrote to memory of 1272	1372	remcos.exe	37
PID 1372 wrote to memory of 1272	1372	remcos.exe	37
PID 1372 wrote to memory of 1272	1372	remcos.exe	37
PID 1372 wrote to memory of 1272	1372	remcos.exe	37
PID 1372 wrote to memory of 1272	1372	remcos.exe	37
PID 1372 wrote to memory of 1272	1372	remcos.exe	37
PID 1372 wrote to memory of 1272	1372	remcos.exe	37
PID 1372 wrote to memory of 1272	1372	remcos.exe	37

C:\Users\Admin\AppData\Local\Temp\Dokumen penerimaan DHL 1190406570, pdf.exe
"C:\Users\Admin\AppData\Local\Temp\Dokumen penerimaan DHL 1190406570, pdf.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:540
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\JvumHgNFJdG" /XML "C:\Users\Admin\AppData\Local\Temp\tmp4D07.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:2012
- C:\Users\Admin\AppData\Local\Temp\Dokumen penerimaan DHL 1190406570, pdf.exe
  "C:\Users\Admin\AppData\Local\Temp\Dokumen penerimaan DHL 1190406570, pdf.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious use of WriteProcessMemory
  PID:2028
- - C:\Windows\SysWOW64\WScript.exe
    "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\install.vbs"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2020
  - - 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:764
    - - 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 behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        Suspicious use of WriteProcessMemory
        
        PID:1372
      - C:\Windows\SysWOW64\schtasks.exe
        
        "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\JvumHgNFJdG" /XML "C:\Users\Admin\AppData\Local\Temp\tmp515B.tmp"
        6⤵
        Creates scheduled task(s)
        
        PID:328
      - 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 SetWindowsHookEx
        
        PID:1272

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/540-5-0x0000000000D30000-0x0000000000D7D000-memory.dmp

Download

memory/540-4-0x0000000000BB0000-0x0000000000C0E000-memory.dmp

Download

memory/540-3-0x0000000006F90000-0x0000000008F8F000-memory.dmp

Download

memory/540-1-0x0000000000DD0000-0x0000000000DD1000-memory.dmp

Download

memory/540-0-0x0000000074080000-0x000000007476E000-memory.dmp

Download

memory/1272-30-0x0000000000400000-0x0000000000421000-memory.dmp

Download

memory/1372-19-0x0000000073510000-0x0000000073BFE000-memory.dmp

Download

memory/1372-20-0x0000000001280000-0x0000000001281000-memory.dmp

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memory/2020-14-0x00000000026C0000-0x00000000026C4000-memory.dmp

Download

memory/2028-10-0x0000000000400000-0x0000000000421000-memory.dmp

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memory/2028-8-0x0000000000400000-0x0000000000421000-memory.dmp

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