remcos | c0b1ba178d886a9d71fb7ffd5b169bf023021e13c545e3cd8d15461221dd2006

General

Target

New REMCOS TES.exe
Size

878KB
MD5

611eb8ef2416aa09b16bbce28e1ec33a
SHA1

20dfdd65a715575754c903ffcbe871ce82f2736b
SHA256

c0b1ba178d886a9d71fb7ffd5b169bf023021e13c545e3cd8d15461221dd2006
SHA512

63147896ce05d9f0a4e44f2f4a4d00f1a631219e114cb05ba40c662b0f6b828b9f95ba96a175503a6a496ad4c5e2b968f2c56ca8f0a8f782887e23ad2bdec023

Score

10^/10

persistence rat remcos

Malware Config

Extracted

Family

remcos

C2

185.140.53.209:1990

Signatures

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1092	New REMCOS TES.exe
1036	chrome.exe

Suspicious behavior: MapViewOfSection 2 IoCs

pid	Process
1092	New REMCOS TES.exe
1036	chrome.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1092 set thread context of 1248	1092	New REMCOS TES.exe	24
PID 1036 set thread context of 1520	1036	chrome.exe	29

Executes dropped EXE 2 IoCs

pid	Process
1036	chrome.exe
1520	chrome.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 1092 wrote to memory of 1248	1092	New REMCOS TES.exe	24
PID 1092 wrote to memory of 1248	1092	New REMCOS TES.exe	24
PID 1092 wrote to memory of 1248	1092	New REMCOS TES.exe	24
PID 1092 wrote to memory of 1248	1092	New REMCOS TES.exe	24
PID 1248 wrote to memory of 1504	1248	New REMCOS TES.exe	25
PID 1248 wrote to memory of 1504	1248	New REMCOS TES.exe	25
PID 1248 wrote to memory of 1504	1248	New REMCOS TES.exe	25
PID 1248 wrote to memory of 1504	1248	New REMCOS TES.exe	25
PID 1504 wrote to memory of 800	1504	WScript.exe	26
PID 1504 wrote to memory of 800	1504	WScript.exe	26
PID 1504 wrote to memory of 800	1504	WScript.exe	26
PID 1504 wrote to memory of 800	1504	WScript.exe	26
PID 800 wrote to memory of 1036	800	cmd.exe	28
PID 800 wrote to memory of 1036	800	cmd.exe	28
PID 800 wrote to memory of 1036	800	cmd.exe	28
PID 800 wrote to memory of 1036	800	cmd.exe	28
PID 1036 wrote to memory of 1520	1036	chrome.exe	29
PID 1036 wrote to memory of 1520	1036	chrome.exe	29
PID 1036 wrote to memory of 1520	1036	chrome.exe	29
PID 1036 wrote to memory of 1520	1036	chrome.exe	29

Loads dropped DLL 2 IoCs

pid	Process
800	cmd.exe
800	cmd.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1520	chrome.exe

Adds Run entry 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-1-5-21-910373003-3952921535-3480519689-1000\Software\Microsoft\Windows\CurrentVersion\Run\	New REMCOS TES.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-910373003-3952921535-3480519689-1000\Software\Microsoft\Windows\CurrentVersion\Run\localhost = "\"C:\\Users\\Admin\\AppData\\Roaming\\chrome.exe\""	New REMCOS TES.exe
Key created	\REGISTRY\USER\S-1-5-21-910373003-3952921535-3480519689-1000\Software\Microsoft\Windows\CurrentVersion\Run\	chrome.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-910373003-3952921535-3480519689-1000\Software\Microsoft\Windows\CurrentVersion\Run\localhost = "\"C:\\Users\\Admin\\AppData\\Roaming\\chrome.exe\""	chrome.exe

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

C:\Users\Admin\AppData\Local\Temp\New REMCOS TES.exe
"C:\Users\Admin\AppData\Local\Temp\New REMCOS TES.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1092
- C:\Users\Admin\AppData\Local\Temp\New REMCOS TES.exe
  "C:\Users\Admin\AppData\Local\Temp\New REMCOS TES.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  - Adds Run entry to start application
  PID:1248
- - C:\Windows\SysWOW64\WScript.exe
    "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\install.vbs"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1504
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c "C:\Users\Admin\AppData\Roaming\chrome.exe"
      4⤵
      Suspicious use of WriteProcessMemory
      Loads dropped DLL
      PID:800
    - - C:\Users\Admin\AppData\Roaming\chrome.exe
        
        C:\Users\Admin\AppData\Roaming\chrome.exe
        5⤵
        Suspicious behavior: EnumeratesProcesses
        Suspicious behavior: MapViewOfSection
        Suspicious use of SetThreadContext
        Executes dropped EXE
        Suspicious use of WriteProcessMemory
        
        PID:1036
      - C:\Users\Admin\AppData\Roaming\chrome.exe
        
        C:\Users\Admin\AppData\Roaming\chrome.exe
        6⤵
        Executes dropped EXE
        Suspicious use of SetWindowsHookEx
        Adds Run entry to start application
        
        PID:1520

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1248-2-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/1248-0-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/1504-6-0x00000000026A0000-0x00000000026A4000-memory.dmp

Filesize
16KB

Download
memory/1520-15-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download

Analysis

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