remcos | baab29c4dd93c424b0b7f572615bac185db13a0f7be15190961ede926de17018

Analysis

max time kernel
149s
max time network
152s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
04-12-2024 14:14

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General

Target

baab29c4dd93c424b0b7f572615bac185db13a0f7be15190961ede926de17018.dll
Size

45.1MB
MD5

529188601e5e26af70c6ab2c87dd813c
SHA1

681f89ad120e8d2b3e07438597930fe9251c096e
SHA256

baab29c4dd93c424b0b7f572615bac185db13a0f7be15190961ede926de17018
SHA512

ae548e62acd57cfb6c4c7598192176505025e2e757c671b8ca986f1bb40bfdc615f82d131a53e1345d0b9779309d52a3257ed2680c6e62dba994a03f25b2e8eb
SSDEEP

786432:fxUP7GCGO7t0Srkx/tC0SzIdSwh/WxbpNHQD3trzRpy8:pUP7GCG6iSrkx1hSzYsHQD3t/Rk8

Score

10^/10

remcos remotehost discovery persistence rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

pattreon.duckdns.org:7035

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-PYAE2X
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
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

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

reg.exe

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000\Software\Microsoft\Windows\CurrentVersion\Run\*LoopholeTu = "rundll32.exe C:\\Users\\Admin\\AppData\\Roaming\\TorretIff.dll,EntryPoint"	reg.exe

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

Processes:

regsvr32.exe

pid	Process
2236	regsvr32.exe

System Location Discovery: System Language Discovery 1 TTPs 4 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

Processes:

regsvr32.exeregsvr32.execmd.exereg.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	regsvr32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	regsvr32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reg.exe

Suspicious use of WriteProcessMemory 25 IoCs

Processes:

regsvr32.exeregsvr32.execmd.exe

description	pid	Process	procid_target
PID 2628 wrote to memory of 2236	2628	regsvr32.exe	30
PID 2628 wrote to memory of 2236	2628	regsvr32.exe	30
PID 2628 wrote to memory of 2236	2628	regsvr32.exe	30
PID 2628 wrote to memory of 2236	2628	regsvr32.exe	30
PID 2628 wrote to memory of 2236	2628	regsvr32.exe	30
PID 2628 wrote to memory of 2236	2628	regsvr32.exe	30
PID 2628 wrote to memory of 2236	2628	regsvr32.exe	30
PID 2236 wrote to memory of 2740	2236	regsvr32.exe	31
PID 2236 wrote to memory of 2740	2236	regsvr32.exe	31
PID 2236 wrote to memory of 2740	2236	regsvr32.exe	31
PID 2236 wrote to memory of 2740	2236	regsvr32.exe	31
PID 2236 wrote to memory of 2740	2236	regsvr32.exe	31
PID 2236 wrote to memory of 2740	2236	regsvr32.exe	31
PID 2236 wrote to memory of 2740	2236	regsvr32.exe	31
PID 2236 wrote to memory of 2740	2236	regsvr32.exe	31
PID 2236 wrote to memory of 2740	2236	regsvr32.exe	31
PID 2236 wrote to memory of 2740	2236	regsvr32.exe	31
PID 2236 wrote to memory of 2552	2236	regsvr32.exe	32
PID 2236 wrote to memory of 2552	2236	regsvr32.exe	32
PID 2236 wrote to memory of 2552	2236	regsvr32.exe	32
PID 2236 wrote to memory of 2552	2236	regsvr32.exe	32
PID 2552 wrote to memory of 2656	2552	cmd.exe	34
PID 2552 wrote to memory of 2656	2552	cmd.exe	34
PID 2552 wrote to memory of 2656	2552	cmd.exe	34
PID 2552 wrote to memory of 2656	2552	cmd.exe	34

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\baab29c4dd93c424b0b7f572615bac185db13a0f7be15190961ede926de17018.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:2628
- C:\Windows\SysWOW64\regsvr32.exe
  /s C:\Users\Admin\AppData\Local\Temp\baab29c4dd93c424b0b7f572615bac185db13a0f7be15190961ede926de17018.dll
  2⤵
  - Suspicious use of NtCreateThreadExHideFromDebugger
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2236
- - C:\Windows\SysWOW64\regsvr32.exe
    "C:\Windows\SysWOW64\regsvr32.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2740
- - C:\Windows\SysWOW64\cmd.exe
    cmd.exe /C reg add "HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /v "*LoopholeTu" /t REG_SZ /d "rundll32.exe C:\Users\Admin\AppData\Roaming\TorretIff.dll",EntryPoint /f & exit
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2552
  - - C:\Windows\SysWOW64\reg.exe
      reg add "HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /v "*LoopholeTu" /t REG_SZ /d "rundll32.exe C:\Users\Admin\AppData\Roaming\TorretIff.dll",EntryPoint /f
      4⤵
      Adds Run key to start application
      System Location Discovery: System Language Discovery
      PID:2656

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

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/2236-1-0x00000000102E6000-0x0000000010300000-memory.dmp

Filesize
104KB

Download
memory/2236-0-0x0000000010000000-0x0000000012DD4000-memory.dmp

Filesize
45.8MB

Download
memory/2236-10-0x0000000010000000-0x0000000012DD4000-memory.dmp

Filesize
45.8MB

Download
memory/2236-9-0x0000000010000000-0x0000000012DD4000-memory.dmp

Filesize
45.8MB

Download
memory/2236-22-0x0000000012D6F000-0x0000000012D76000-memory.dmp

Filesize
28KB

Download
memory/2236-32-0x00000000102E6000-0x0000000010300000-memory.dmp

Filesize
104KB

Download
memory/2740-14-0x00000000000D0000-0x0000000000152000-memory.dmp

Filesize
520KB

Download
memory/2740-12-0x00000000000D0000-0x0000000000152000-memory.dmp

Filesize
520KB

Download
memory/2740-11-0x00000000000D0000-0x0000000000152000-memory.dmp

Filesize
520KB

Download
memory/2740-7-0x0000000000160000-0x0000000000161000-memory.dmp

Filesize
4KB

Download
memory/2740-6-0x0000000000160000-0x0000000000161000-memory.dmp

Filesize
4KB

Download
memory/2740-4-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2740-2-0x00000000000D0000-0x0000000000152000-memory.dmp

Filesize
520KB

Download
memory/2740-15-0x00000000000D0000-0x0000000000152000-memory.dmp

Filesize
520KB

Download
memory/2740-16-0x00000000000D0000-0x0000000000152000-memory.dmp

Filesize
520KB

Download
memory/2740-17-0x00000000000D0000-0x0000000000152000-memory.dmp

Filesize
520KB

Download
memory/2740-18-0x00000000000D0000-0x0000000000152000-memory.dmp

Filesize
520KB

Download
memory/2740-19-0x00000000000D0000-0x0000000000152000-memory.dmp

Filesize
520KB

Download
memory/2740-20-0x00000000000D0000-0x0000000000152000-memory.dmp

Filesize
520KB

Download
memory/2740-21-0x00000000000D0000-0x0000000000152000-memory.dmp

Filesize
520KB

Download
memory/2740-23-0x00000000000D0000-0x0000000000152000-memory.dmp

Filesize
520KB

Download
memory/2740-24-0x00000000000D0000-0x0000000000152000-memory.dmp

Filesize
520KB

Download
memory/2740-25-0x00000000000D0000-0x0000000000152000-memory.dmp

Filesize
520KB

Download
memory/2740-26-0x00000000000D0000-0x0000000000152000-memory.dmp

Filesize
520KB

Download
memory/2740-27-0x00000000000D0000-0x0000000000152000-memory.dmp

Filesize
520KB

Download
memory/2740-28-0x00000000000D0000-0x0000000000152000-memory.dmp

Filesize
520KB

Download
memory/2740-29-0x00000000000D0000-0x0000000000152000-memory.dmp

Filesize
520KB

Download
memory/2740-30-0x00000000000D0000-0x0000000000152000-memory.dmp

Filesize
520KB

Download
memory/2740-33-0x00000000000D0000-0x0000000000152000-memory.dmp

Filesize
520KB

Download
memory/2740-34-0x00000000000D0000-0x0000000000152000-memory.dmp

Filesize
520KB

Download
memory/2740-35-0x00000000000D0000-0x0000000000152000-memory.dmp

Filesize
520KB

Download
memory/2740-36-0x00000000000D0000-0x0000000000152000-memory.dmp

Filesize
520KB

Download
memory/2740-37-0x00000000000D0000-0x0000000000152000-memory.dmp

Filesize
520KB

Download
memory/2740-38-0x00000000000D0000-0x0000000000152000-memory.dmp

Filesize
520KB

Download
memory/2740-39-0x00000000000D0000-0x0000000000152000-memory.dmp

Filesize
520KB

Download
memory/2740-40-0x00000000000D0000-0x0000000000152000-memory.dmp

Filesize
520KB

Download
memory/2740-41-0x00000000000D0000-0x0000000000152000-memory.dmp

Filesize
520KB

Download
memory/2740-42-0x00000000000D0000-0x0000000000152000-memory.dmp

Filesize
520KB

Download
memory/2740-43-0x00000000000D0000-0x0000000000152000-memory.dmp

Filesize
520KB

Download
memory/2740-44-0x00000000000D0000-0x0000000000152000-memory.dmp

Filesize
520KB

Download
memory/2740-45-0x00000000000D0000-0x0000000000152000-memory.dmp

Filesize
520KB

Download
memory/2740-46-0x00000000000D0000-0x0000000000152000-memory.dmp

Filesize
520KB

Download
memory/2740-47-0x00000000000D0000-0x0000000000152000-memory.dmp

Filesize
520KB

Download
memory/2740-48-0x00000000000D0000-0x0000000000152000-memory.dmp

Filesize
520KB

Download
memory/2740-49-0x00000000000D0000-0x0000000000152000-memory.dmp

Filesize
520KB

Download
memory/2740-50-0x00000000000D0000-0x0000000000152000-memory.dmp

Filesize
520KB

Download
memory/2740-51-0x00000000000D0000-0x0000000000152000-memory.dmp

Filesize
520KB

Download
memory/2740-52-0x00000000000D0000-0x0000000000152000-memory.dmp

Filesize
520KB

Download
memory/2740-53-0x00000000000D0000-0x0000000000152000-memory.dmp

Filesize
520KB

Download
memory/2740-54-0x00000000000D0000-0x0000000000152000-memory.dmp

Filesize
520KB

Download
memory/2740-55-0x00000000000D0000-0x0000000000152000-memory.dmp

Filesize
520KB

Download
memory/2740-56-0x00000000000D0000-0x0000000000152000-memory.dmp

Filesize
520KB

Download
memory/2740-57-0x00000000000D0000-0x0000000000152000-memory.dmp

Filesize
520KB

Download
memory/2740-58-0x00000000000D0000-0x0000000000152000-memory.dmp

Filesize
520KB

Download
memory/2740-59-0x00000000000D0000-0x0000000000152000-memory.dmp

Filesize
520KB

Download
memory/2740-60-0x00000000000D0000-0x0000000000152000-memory.dmp

Filesize
520KB

Download
memory/2740-61-0x00000000000D0000-0x0000000000152000-memory.dmp

Filesize
520KB

Download
memory/2740-62-0x00000000000D0000-0x0000000000152000-memory.dmp

Filesize
520KB

Download
memory/2740-63-0x00000000000D0000-0x0000000000152000-memory.dmp

Filesize
520KB

Download
memory/2740-64-0x00000000000D0000-0x0000000000152000-memory.dmp

Filesize
520KB

Download
memory/2740-65-0x00000000000D0000-0x0000000000152000-memory.dmp

Filesize
520KB

Download
memory/2740-66-0x00000000000D0000-0x0000000000152000-memory.dmp

Filesize
520KB

Download
memory/2740-67-0x00000000000D0000-0x0000000000152000-memory.dmp

Filesize
520KB

Download
memory/2740-68-0x00000000000D0000-0x0000000000152000-memory.dmp

Filesize
520KB

Download
memory/2740-69-0x00000000000D0000-0x0000000000152000-memory.dmp

Filesize
520KB

Download