remcos | 8dd3a8d57533cddb053799ed6f14291ed97042e9209870f8daa0a8eeb9223d38

General

Target

8dd3a8d57533cddb053799ed6f14291ed97042e9209870f8daa0a8eeb9223d38.exe
Size

937KB
MD5

d153584c42340d402d6e44454c3ad5b2
SHA1

e14bfbe2f059a26e75755e29f032c5e0d3cf673c
SHA256

8dd3a8d57533cddb053799ed6f14291ed97042e9209870f8daa0a8eeb9223d38
SHA512

599b52b887b1c71515ec37ac072b4201a5fa023445b88390a6af0d7e51c90b4d71e02e6c273982efd45f4f2c781fd1608eff5d916968d7c70b06be0b103b33f9
SSDEEP

24576:/iUmSB/o5d1ubcvq/q9JwVZeYc+V8leByGrKzp6B3IjM://mU/ohubcvq/2wVZee8leDrKzp638

Score

10^/10

remcos remotehost discovery evasion rat trojan upx

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

system6233.duckdns.org:3045

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
true
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
mouse_option
false
mutex
Rmc-HSZZPP
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

UAC bypass 3 TTPs 1 IoCs

evasion trojan

Bypass User Account Control

T1548.002

Disable or Modify Tools

T1562.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	reg.exe

UPX packed file 2 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral1/memory/1744-0-0x0000000000E60000-0x0000000001061000-memory.dmp	upx
behavioral1/memory/1744-17-0x0000000000E60000-0x0000000001061000-memory.dmp	upx

AutoIT Executable 1 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral1/memory/1744-17-0x0000000000E60000-0x0000000001061000-memory.dmp	autoit_exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1744 set thread context of 1300	1744	8dd3a8d57533cddb053799ed6f14291ed97042e9209870f8daa0a8eeb9223d38.exe	28

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2252	1300	WerFault.exe	28

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	reg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	8dd3a8d57533cddb053799ed6f14291ed97042e9209870f8daa0a8eeb9223d38.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Modifies registry key 1 TTPs 1 IoCs

Modify Registry

T1112

pid	Process
2404	reg.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
1744	8dd3a8d57533cddb053799ed6f14291ed97042e9209870f8daa0a8eeb9223d38.exe

Suspicious use of FindShellTrayWindow 6 IoCs

pid	Process
1744	8dd3a8d57533cddb053799ed6f14291ed97042e9209870f8daa0a8eeb9223d38.exe
1744	8dd3a8d57533cddb053799ed6f14291ed97042e9209870f8daa0a8eeb9223d38.exe
1744	8dd3a8d57533cddb053799ed6f14291ed97042e9209870f8daa0a8eeb9223d38.exe
1744	8dd3a8d57533cddb053799ed6f14291ed97042e9209870f8daa0a8eeb9223d38.exe
1744	8dd3a8d57533cddb053799ed6f14291ed97042e9209870f8daa0a8eeb9223d38.exe
1744	8dd3a8d57533cddb053799ed6f14291ed97042e9209870f8daa0a8eeb9223d38.exe

Suspicious use of SendNotifyMessage 6 IoCs

pid	Process
1744	8dd3a8d57533cddb053799ed6f14291ed97042e9209870f8daa0a8eeb9223d38.exe
1744	8dd3a8d57533cddb053799ed6f14291ed97042e9209870f8daa0a8eeb9223d38.exe
1744	8dd3a8d57533cddb053799ed6f14291ed97042e9209870f8daa0a8eeb9223d38.exe
1744	8dd3a8d57533cddb053799ed6f14291ed97042e9209870f8daa0a8eeb9223d38.exe
1744	8dd3a8d57533cddb053799ed6f14291ed97042e9209870f8daa0a8eeb9223d38.exe
1744	8dd3a8d57533cddb053799ed6f14291ed97042e9209870f8daa0a8eeb9223d38.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1300	svchost.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 1744 wrote to memory of 1300	1744	8dd3a8d57533cddb053799ed6f14291ed97042e9209870f8daa0a8eeb9223d38.exe	28
PID 1744 wrote to memory of 1300	1744	8dd3a8d57533cddb053799ed6f14291ed97042e9209870f8daa0a8eeb9223d38.exe	28
PID 1744 wrote to memory of 1300	1744	8dd3a8d57533cddb053799ed6f14291ed97042e9209870f8daa0a8eeb9223d38.exe	28
PID 1744 wrote to memory of 1300	1744	8dd3a8d57533cddb053799ed6f14291ed97042e9209870f8daa0a8eeb9223d38.exe	28
PID 1744 wrote to memory of 1300	1744	8dd3a8d57533cddb053799ed6f14291ed97042e9209870f8daa0a8eeb9223d38.exe	28
PID 1300 wrote to memory of 2444	1300	svchost.exe	29
PID 1300 wrote to memory of 2444	1300	svchost.exe	29
PID 1300 wrote to memory of 2444	1300	svchost.exe	29
PID 1300 wrote to memory of 2444	1300	svchost.exe	29
PID 2444 wrote to memory of 2404	2444	cmd.exe	31
PID 2444 wrote to memory of 2404	2444	cmd.exe	31
PID 2444 wrote to memory of 2404	2444	cmd.exe	31
PID 2444 wrote to memory of 2404	2444	cmd.exe	31
PID 1300 wrote to memory of 2252	1300	svchost.exe	35
PID 1300 wrote to memory of 2252	1300	svchost.exe	35
PID 1300 wrote to memory of 2252	1300	svchost.exe	35
PID 1300 wrote to memory of 2252	1300	svchost.exe	35

C:\Users\Admin\AppData\Local\Temp\8dd3a8d57533cddb053799ed6f14291ed97042e9209870f8daa0a8eeb9223d38.exe
"C:\Users\Admin\AppData\Local\Temp\8dd3a8d57533cddb053799ed6f14291ed97042e9209870f8daa0a8eeb9223d38.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1744
- C:\Windows\SysWOW64\svchost.exe
  "C:\Users\Admin\AppData\Local\Temp\8dd3a8d57533cddb053799ed6f14291ed97042e9209870f8daa0a8eeb9223d38.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1300
- - C:\Windows\SysWOW64\cmd.exe
    /k %windir%\System32\reg.exe ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2444
  - - C:\Windows\SysWOW64\reg.exe
      C:\Windows\System32\reg.exe ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f
      4⤵
      UAC bypass
      System Location Discovery: System Language Discovery
      Modifies registry key
      PID:2404
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1300 -s 524
    3⤵
    - Program crash
    PID:2252

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Abuse Elevation Control Mechanism

1

T1548

Bypass User Account Control

1

T1548.002

Defense Evasion

Abuse Elevation Control Mechanism

1

T1548

Bypass User Account Control

1

T1548.002

Impair Defenses

1

T1562

Disable or Modify Tools

Modify Registry

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\ProgramData\remcos\logs.dat

Filesize
144B

MD5
2b9177ccb609cd808fdc9bb78da453c1

SHA1
464e44e905d4c837aab8e93079ffefd853247fac

SHA256
b2da9f1dbf23abeed13596e668c485e2057a8990ede1ed3e63c8c505e0cc1348

SHA512
b6b8e0a6cf18551f0ef4bac15528820c5750ca54a3c823c3fa818900e6a1d5e80029e565930c47b4df36dee73ae3987796da8e43eac3bd513690e4efea890bf1

Download Submit
memory/1300-32-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1300-16-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1300-33-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1300-18-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1300-62-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1300-22-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1300-19-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1300-23-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1300-26-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1300-31-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1300-30-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1300-36-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1300-28-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1300-59-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1300-57-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1300-13-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1300-29-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1300-42-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1300-46-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1300-47-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1300-48-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1300-50-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1300-51-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1300-53-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1300-54-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1300-52-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1744-17-0x0000000000E60000-0x0000000001061000-memory.dmp

Filesize
2.0MB

Download
memory/1744-0-0x0000000000E60000-0x0000000001061000-memory.dmp

Filesize
2.0MB

Download
memory/1744-12-0x0000000000130000-0x0000000000134000-memory.dmp

Filesize
16KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads