remcos | 090bd25f8a7a798f148508ae388e94d6e7a3cae7b0f2b10757010e39289aa6f5

Analysis

max time kernel
149s
max time network
157s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
05-12-2024 02:04

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General

Target

090bd25f8a7a798f148508ae388e94d6e7a3cae7b0f2b10757010e39289aa6f5.dll
Size

45.1MB
MD5

fbbd10401ce1b31494d8c9f23d6a8664
SHA1

47666e86b636421db480d93851ee5139c5c0a7dc
SHA256

090bd25f8a7a798f148508ae388e94d6e7a3cae7b0f2b10757010e39289aa6f5
SHA512

2c95831ac6bca0803960732601dc4257cfc48782d4ad8af2295228160f522ee89ce4ff190970e3e5eddb5a1ca828bf539d6565ee6a94e5ed0d313bb021f5dfcf
SSDEEP

786432:kUP7GCGO7t0Srkx/tC0SzIdSwh/WxbpNHQD3trzRpwzr:kUP7GCG6iSrkx1hSzYsHQD3t/RiP

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-US2YEL
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

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3063565911-2056067323-3330884624-1000\Software\Microsoft\Windows\CurrentVersion\Run\*LoopholeTu = "rundll32.exe C:\\Users\\Admin\\AppData\\Roaming\\TorretIff.dll,EntryPoint"	reg.exe

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

pid	Process
2376	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

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

description	pid	Process	procid_target
PID 2548 wrote to memory of 2376	2548	regsvr32.exe	30
PID 2548 wrote to memory of 2376	2548	regsvr32.exe	30
PID 2548 wrote to memory of 2376	2548	regsvr32.exe	30
PID 2548 wrote to memory of 2376	2548	regsvr32.exe	30
PID 2548 wrote to memory of 2376	2548	regsvr32.exe	30
PID 2548 wrote to memory of 2376	2548	regsvr32.exe	30
PID 2548 wrote to memory of 2376	2548	regsvr32.exe	30
PID 2376 wrote to memory of 2352	2376	regsvr32.exe	32
PID 2376 wrote to memory of 2352	2376	regsvr32.exe	32
PID 2376 wrote to memory of 2352	2376	regsvr32.exe	32
PID 2376 wrote to memory of 2352	2376	regsvr32.exe	32
PID 2376 wrote to memory of 2352	2376	regsvr32.exe	32
PID 2376 wrote to memory of 2352	2376	regsvr32.exe	32
PID 2376 wrote to memory of 2352	2376	regsvr32.exe	32
PID 2376 wrote to memory of 2352	2376	regsvr32.exe	32
PID 2376 wrote to memory of 2352	2376	regsvr32.exe	32
PID 2376 wrote to memory of 2352	2376	regsvr32.exe	32
PID 2376 wrote to memory of 2760	2376	regsvr32.exe	33
PID 2376 wrote to memory of 2760	2376	regsvr32.exe	33
PID 2376 wrote to memory of 2760	2376	regsvr32.exe	33
PID 2376 wrote to memory of 2760	2376	regsvr32.exe	33
PID 2760 wrote to memory of 2868	2760	cmd.exe	35
PID 2760 wrote to memory of 2868	2760	cmd.exe	35
PID 2760 wrote to memory of 2868	2760	cmd.exe	35
PID 2760 wrote to memory of 2868	2760	cmd.exe	35

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\090bd25f8a7a798f148508ae388e94d6e7a3cae7b0f2b10757010e39289aa6f5.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:2548
- C:\Windows\SysWOW64\regsvr32.exe
  /s C:\Users\Admin\AppData\Local\Temp\090bd25f8a7a798f148508ae388e94d6e7a3cae7b0f2b10757010e39289aa6f5.dll
  2⤵
  - Suspicious use of NtCreateThreadExHideFromDebugger
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2376
- - C:\Windows\SysWOW64\regsvr32.exe
    "C:\Windows\SysWOW64\regsvr32.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2352
- - 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:2760
  - - 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:2868

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/2352-37-0x0000000000090000-0x0000000000112000-memory.dmp

Filesize
520KB

Download
memory/2352-63-0x0000000000090000-0x0000000000112000-memory.dmp

Filesize
520KB

Download
memory/2352-10-0x0000000000090000-0x0000000000112000-memory.dmp

Filesize
520KB

Download
memory/2352-7-0x0000000000120000-0x0000000000121000-memory.dmp

Filesize
4KB

Download
memory/2352-3-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2352-5-0x0000000000120000-0x0000000000121000-memory.dmp

Filesize
4KB

Download
memory/2352-2-0x0000000000090000-0x0000000000112000-memory.dmp

Filesize
520KB

Download
memory/2352-11-0x0000000000090000-0x0000000000112000-memory.dmp

Filesize
520KB

Download
memory/2352-67-0x0000000000090000-0x0000000000112000-memory.dmp

Filesize
520KB

Download
memory/2352-66-0x0000000000090000-0x0000000000112000-memory.dmp

Filesize
520KB

Download
memory/2352-34-0x0000000000090000-0x0000000000112000-memory.dmp

Filesize
520KB

Download
memory/2352-15-0x0000000000090000-0x0000000000112000-memory.dmp

Filesize
520KB

Download
memory/2352-16-0x0000000000090000-0x0000000000112000-memory.dmp

Filesize
520KB

Download
memory/2352-17-0x0000000000090000-0x0000000000112000-memory.dmp

Filesize
520KB

Download
memory/2352-18-0x0000000000090000-0x0000000000112000-memory.dmp

Filesize
520KB

Download
memory/2352-64-0x0000000000090000-0x0000000000112000-memory.dmp

Filesize
520KB

Download
memory/2352-20-0x0000000000090000-0x0000000000112000-memory.dmp

Filesize
520KB

Download
memory/2352-21-0x0000000000090000-0x0000000000112000-memory.dmp

Filesize
520KB

Download
memory/2352-22-0x0000000000090000-0x0000000000112000-memory.dmp

Filesize
520KB

Download
memory/2352-23-0x0000000000090000-0x0000000000112000-memory.dmp

Filesize
520KB

Download
memory/2352-24-0x0000000000090000-0x0000000000112000-memory.dmp

Filesize
520KB

Download
memory/2352-25-0x0000000000090000-0x0000000000112000-memory.dmp

Filesize
520KB

Download
memory/2352-26-0x0000000000090000-0x0000000000112000-memory.dmp

Filesize
520KB

Download
memory/2352-27-0x0000000000090000-0x0000000000112000-memory.dmp

Filesize
520KB

Download
memory/2352-28-0x0000000000090000-0x0000000000112000-memory.dmp

Filesize
520KB

Download
memory/2352-29-0x0000000000090000-0x0000000000112000-memory.dmp

Filesize
520KB

Download
memory/2352-30-0x0000000000090000-0x0000000000112000-memory.dmp

Filesize
520KB

Download
memory/2352-31-0x0000000000090000-0x0000000000112000-memory.dmp

Filesize
520KB

Download
memory/2352-32-0x0000000000090000-0x0000000000112000-memory.dmp

Filesize
520KB

Download
memory/2352-33-0x0000000000090000-0x0000000000112000-memory.dmp

Filesize
520KB

Download
memory/2352-65-0x0000000000090000-0x0000000000112000-memory.dmp

Filesize
520KB

Download
memory/2352-35-0x0000000000090000-0x0000000000112000-memory.dmp

Filesize
520KB

Download
memory/2352-14-0x0000000000090000-0x0000000000112000-memory.dmp

Filesize
520KB

Download
memory/2352-62-0x0000000000090000-0x0000000000112000-memory.dmp

Filesize
520KB

Download
memory/2352-38-0x0000000000090000-0x0000000000112000-memory.dmp

Filesize
520KB

Download
memory/2352-39-0x0000000000090000-0x0000000000112000-memory.dmp

Filesize
520KB

Download
memory/2352-40-0x0000000000090000-0x0000000000112000-memory.dmp

Filesize
520KB

Download
memory/2352-41-0x0000000000090000-0x0000000000112000-memory.dmp

Filesize
520KB

Download
memory/2352-42-0x0000000000090000-0x0000000000112000-memory.dmp

Filesize
520KB

Download
memory/2352-43-0x0000000000090000-0x0000000000112000-memory.dmp

Filesize
520KB

Download
memory/2352-44-0x0000000000090000-0x0000000000112000-memory.dmp

Filesize
520KB

Download
memory/2352-45-0x0000000000090000-0x0000000000112000-memory.dmp

Filesize
520KB

Download
memory/2352-46-0x0000000000090000-0x0000000000112000-memory.dmp

Filesize
520KB

Download
memory/2352-47-0x0000000000090000-0x0000000000112000-memory.dmp

Filesize
520KB

Download
memory/2352-48-0x0000000000090000-0x0000000000112000-memory.dmp

Filesize
520KB

Download
memory/2352-49-0x0000000000090000-0x0000000000112000-memory.dmp

Filesize
520KB

Download
memory/2352-50-0x0000000000090000-0x0000000000112000-memory.dmp

Filesize
520KB

Download
memory/2352-51-0x0000000000090000-0x0000000000112000-memory.dmp

Filesize
520KB

Download
memory/2352-52-0x0000000000090000-0x0000000000112000-memory.dmp

Filesize
520KB

Download
memory/2352-53-0x0000000000090000-0x0000000000112000-memory.dmp

Filesize
520KB

Download
memory/2352-54-0x0000000000090000-0x0000000000112000-memory.dmp

Filesize
520KB

Download
memory/2352-55-0x0000000000090000-0x0000000000112000-memory.dmp

Filesize
520KB

Download
memory/2352-56-0x0000000000090000-0x0000000000112000-memory.dmp

Filesize
520KB

Download
memory/2352-57-0x0000000000090000-0x0000000000112000-memory.dmp

Filesize
520KB

Download
memory/2352-58-0x0000000000090000-0x0000000000112000-memory.dmp

Filesize
520KB

Download
memory/2352-59-0x0000000000090000-0x0000000000112000-memory.dmp

Filesize
520KB

Download
memory/2352-60-0x0000000000090000-0x0000000000112000-memory.dmp

Filesize
520KB

Download
memory/2352-61-0x0000000000090000-0x0000000000112000-memory.dmp

Filesize
520KB

Download
memory/2376-1-0x00000000102E6000-0x0000000010300000-memory.dmp

Filesize
104KB

Download
memory/2376-0-0x0000000010000000-0x0000000012DD4000-memory.dmp

Filesize
45.8MB

Download
memory/2376-19-0x0000000012D6E000-0x0000000012D75000-memory.dmp

Filesize
28KB

Download
memory/2376-36-0x00000000102E6000-0x0000000010300000-memory.dmp

Filesize
104KB

Download
memory/2376-9-0x0000000010000000-0x0000000012DD4000-memory.dmp

Filesize
45.8MB

Download
memory/2376-13-0x0000000010000000-0x0000000012DD4000-memory.dmp

Filesize
45.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads