remcos | 8f4cb0baad6c95c6c6e26de2fe111686d4801f87da7aed5b2b5db94cd8daa882

General

Target

Bukti-Transfer..pdf.exe
Size

1.3MB
MD5

62bf026c84bdd7358c90d811a884ee9a
SHA1

2c7981b703dcf58b2955395cb1fb7e796de9f1a4
SHA256

18f7d8baabaee1f33165f8be68118400d9ac93393ac2352c53f014f45e623aba
SHA512

9820afd72c7d028e4d9ed953551137c02da23ed3a76b2f94590a233da617abb3392485272529208007d115b4d021b139f40234fa0c66f42a3549d5b2cb65b07a
SSDEEP

24576:IKaHUIr+zim0CY8iMSjRlgAgBVP+z9SukaqDoXaadupi8EU6btt:xaHUIr+g8iMSjRlg1PgfCyuUhL

Score

10^/10

remcos feb 13 discovery execution rat

Malware Config

Extracted

Family

remcos

Botnet

FEB 13

C2

oktoviyanto.ddns.net:9373

103.186.117.61:9373

benhenry2234.zapto.org:9373

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-MK1WZA
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
startup_value
Remcos
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

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
2860	powershell.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1172 set thread context of 3012	1172	Bukti-Transfer..pdf.exe	35

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

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	Bukti-Transfer..pdf.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Bukti-Transfer..pdf.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
2712	schtasks.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
1172	Bukti-Transfer..pdf.exe
1172	Bukti-Transfer..pdf.exe
1172	Bukti-Transfer..pdf.exe
1172	Bukti-Transfer..pdf.exe
2860	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1172	Bukti-Transfer..pdf.exe
Token: SeDebugPrivilege	2860	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3012	Bukti-Transfer..pdf.exe

Suspicious use of WriteProcessMemory 25 IoCs

description	pid	Process	procid_target
PID 1172 wrote to memory of 2860	1172	Bukti-Transfer..pdf.exe	30
PID 1172 wrote to memory of 2860	1172	Bukti-Transfer..pdf.exe	30
PID 1172 wrote to memory of 2860	1172	Bukti-Transfer..pdf.exe	30
PID 1172 wrote to memory of 2860	1172	Bukti-Transfer..pdf.exe	30
PID 1172 wrote to memory of 2712	1172	Bukti-Transfer..pdf.exe	32
PID 1172 wrote to memory of 2712	1172	Bukti-Transfer..pdf.exe	32
PID 1172 wrote to memory of 2712	1172	Bukti-Transfer..pdf.exe	32
PID 1172 wrote to memory of 2712	1172	Bukti-Transfer..pdf.exe	32
PID 1172 wrote to memory of 2920	1172	Bukti-Transfer..pdf.exe	34
PID 1172 wrote to memory of 2920	1172	Bukti-Transfer..pdf.exe	34
PID 1172 wrote to memory of 2920	1172	Bukti-Transfer..pdf.exe	34
PID 1172 wrote to memory of 2920	1172	Bukti-Transfer..pdf.exe	34
PID 1172 wrote to memory of 3012	1172	Bukti-Transfer..pdf.exe	35
PID 1172 wrote to memory of 3012	1172	Bukti-Transfer..pdf.exe	35
PID 1172 wrote to memory of 3012	1172	Bukti-Transfer..pdf.exe	35
PID 1172 wrote to memory of 3012	1172	Bukti-Transfer..pdf.exe	35
PID 1172 wrote to memory of 3012	1172	Bukti-Transfer..pdf.exe	35
PID 1172 wrote to memory of 3012	1172	Bukti-Transfer..pdf.exe	35
PID 1172 wrote to memory of 3012	1172	Bukti-Transfer..pdf.exe	35
PID 1172 wrote to memory of 3012	1172	Bukti-Transfer..pdf.exe	35
PID 1172 wrote to memory of 3012	1172	Bukti-Transfer..pdf.exe	35
PID 1172 wrote to memory of 3012	1172	Bukti-Transfer..pdf.exe	35
PID 1172 wrote to memory of 3012	1172	Bukti-Transfer..pdf.exe	35
PID 1172 wrote to memory of 3012	1172	Bukti-Transfer..pdf.exe	35
PID 1172 wrote to memory of 3012	1172	Bukti-Transfer..pdf.exe	35

C:\Users\Admin\AppData\Local\Temp\Bukti-Transfer..pdf.exe
"C:\Users\Admin\AppData\Local\Temp\Bukti-Transfer..pdf.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1172
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\qYpRizA.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2860
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\qYpRizA" /XML "C:\Users\Admin\AppData\Local\Temp\tmpBC8B.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2712
- C:\Users\Admin\AppData\Local\Temp\Bukti-Transfer..pdf.exe
  "C:\Users\Admin\AppData\Local\Temp\Bukti-Transfer..pdf.exe"
  2⤵
  PID:2920
- C:\Users\Admin\AppData\Local\Temp\Bukti-Transfer..pdf.exe
  "C:\Users\Admin\AppData\Local\Temp\Bukti-Transfer..pdf.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:3012

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

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
189e95018d7574a393c10aac5af9566c

SHA1
a9af81fc270a21112b64032a62ecbc191b343938

SHA256
3261c0e5f8410ebb71287beb35c00751f70bf0d654e11d4b898ea6082a8fc0ae

SHA512
cbd5bf02955d610348f3cfe132d2a893b9d13b462be0e17846b3d982642fee7b7ecceb62e2ba5327dfa13d4a3993bb223e174b91e0f5943577d4f3679449f8e7

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpBC8B.tmp

Filesize
1KB

MD5
bf53964c8deeb2e8d655d3cbf66bf568

SHA1
228b5d21ef6fe39271e746cd0ad386a7fe5590ea

SHA256
5d66e9977bc72c9215388c1e06e7a8a6f1b48f18ff1be5b1224d2ad7f752affb

SHA512
3179e02019b5eddf70d7158ec1d1772542799be5169bfba75e13db9b4116507e0d2d7365cc7aa491afd687e4182450984842914a02beed38e3a09bafadab534b

Download Submit
memory/1172-0-0x0000000073DBE000-0x0000000073DBF000-memory.dmp

Filesize
4KB

Download
memory/1172-1-0x0000000000A10000-0x0000000000B68000-memory.dmp

Filesize
1.3MB

Download
memory/1172-2-0x0000000073DB0000-0x000000007449E000-memory.dmp

Filesize
6.9MB

Download
memory/1172-3-0x00000000005B0000-0x00000000005CE000-memory.dmp

Filesize
120KB

Download
memory/1172-4-0x0000000073DBE000-0x0000000073DBF000-memory.dmp

Filesize
4KB

Download
memory/1172-5-0x0000000073DB0000-0x000000007449E000-memory.dmp

Filesize
6.9MB

Download
memory/1172-6-0x000000000B230000-0x000000000B2F0000-memory.dmp

Filesize
768KB

Download
memory/1172-37-0x0000000073DB0000-0x000000007449E000-memory.dmp

Filesize
6.9MB

Download
memory/3012-28-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3012-16-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3012-33-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3012-32-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3012-31-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3012-30-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/3012-18-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3012-26-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3012-24-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3012-22-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3012-20-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3012-36-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3012-38-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3012-14-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3012-44-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3012-45-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3012-46-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3012-55-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3012-56-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3012-63-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3012-64-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3012-71-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3012-72-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads