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
1148	powershell.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2156 set thread context of 2808	2156	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
1500	schtasks.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2156	Bukti-Transfer..pdf.exe
2156	Bukti-Transfer..pdf.exe
2156	Bukti-Transfer..pdf.exe
2156	Bukti-Transfer..pdf.exe
1148	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2156	Bukti-Transfer..pdf.exe
Token: SeDebugPrivilege	1148	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2808	Bukti-Transfer..pdf.exe

Suspicious use of WriteProcessMemory 25 IoCs

description	pid	Process	procid_target
PID 2156 wrote to memory of 1148	2156	Bukti-Transfer..pdf.exe	30
PID 2156 wrote to memory of 1148	2156	Bukti-Transfer..pdf.exe	30
PID 2156 wrote to memory of 1148	2156	Bukti-Transfer..pdf.exe	30
PID 2156 wrote to memory of 1148	2156	Bukti-Transfer..pdf.exe	30
PID 2156 wrote to memory of 1500	2156	Bukti-Transfer..pdf.exe	31
PID 2156 wrote to memory of 1500	2156	Bukti-Transfer..pdf.exe	31
PID 2156 wrote to memory of 1500	2156	Bukti-Transfer..pdf.exe	31
PID 2156 wrote to memory of 1500	2156	Bukti-Transfer..pdf.exe	31
PID 2156 wrote to memory of 2776	2156	Bukti-Transfer..pdf.exe	34
PID 2156 wrote to memory of 2776	2156	Bukti-Transfer..pdf.exe	34
PID 2156 wrote to memory of 2776	2156	Bukti-Transfer..pdf.exe	34
PID 2156 wrote to memory of 2776	2156	Bukti-Transfer..pdf.exe	34
PID 2156 wrote to memory of 2808	2156	Bukti-Transfer..pdf.exe	35
PID 2156 wrote to memory of 2808	2156	Bukti-Transfer..pdf.exe	35
PID 2156 wrote to memory of 2808	2156	Bukti-Transfer..pdf.exe	35
PID 2156 wrote to memory of 2808	2156	Bukti-Transfer..pdf.exe	35
PID 2156 wrote to memory of 2808	2156	Bukti-Transfer..pdf.exe	35
PID 2156 wrote to memory of 2808	2156	Bukti-Transfer..pdf.exe	35
PID 2156 wrote to memory of 2808	2156	Bukti-Transfer..pdf.exe	35
PID 2156 wrote to memory of 2808	2156	Bukti-Transfer..pdf.exe	35
PID 2156 wrote to memory of 2808	2156	Bukti-Transfer..pdf.exe	35
PID 2156 wrote to memory of 2808	2156	Bukti-Transfer..pdf.exe	35
PID 2156 wrote to memory of 2808	2156	Bukti-Transfer..pdf.exe	35
PID 2156 wrote to memory of 2808	2156	Bukti-Transfer..pdf.exe	35
PID 2156 wrote to memory of 2808	2156	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:2156
- 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:1148
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\qYpRizA" /XML "C:\Users\Admin\AppData\Local\Temp\tmp56C7.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:1500
- C:\Users\Admin\AppData\Local\Temp\Bukti-Transfer..pdf.exe
  "C:\Users\Admin\AppData\Local\Temp\Bukti-Transfer..pdf.exe"
  2⤵
  PID:2776
- 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:2808

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\ProgramData\remcos\logs.dat

Filesize
144B

MD5
77ca58780792ed2662f35a14fb168e86

SHA1
5eeba5b3e17b996ac92d226d8cb33a733fad6fc5

SHA256
f15b454305d1e5e2873faa7e058e4532ebd319be511e9ba1e9df54a6dea94fa8

SHA512
c3e240ad4904de51e295016a0d5f28fe43b31d5cea20a74cfabcfd949d8fff6ea1541707a4ac88a1157131d2e54e5bc810b474a951d680b03f77abc757d8afed

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp56C7.tmp

Filesize
1KB

MD5
548b4a0a66e130696cd63a3d8cd2ac22

SHA1
f3b716fd64c4bd5776ac08c2d42d3c233938ea99

SHA256
358732877bede32e474d4ad03c2f2af3a77e99e6125029f143f069b333e455dd

SHA512
46df7cb7012eadad9bb661eb53090cca50f0a567e31a5abdd55890b0ff7d6a008ad8cfa0584906df78ef916b200f9c14112d432ed3466d190033f7b1b86d2df6

Download Submit
memory/2156-37-0x0000000074AC0000-0x00000000751AE000-memory.dmp

Filesize
6.9MB

Download
memory/2156-1-0x0000000001030000-0x0000000001188000-memory.dmp

Filesize
1.3MB

Download
memory/2156-2-0x0000000074AC0000-0x00000000751AE000-memory.dmp

Filesize
6.9MB

Download
memory/2156-3-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/2156-4-0x0000000074ACE000-0x0000000074ACF000-memory.dmp

Filesize
4KB

Download
memory/2156-5-0x0000000074AC0000-0x00000000751AE000-memory.dmp

Filesize
6.9MB

Download
memory/2156-6-0x0000000000C30000-0x0000000000CF0000-memory.dmp

Filesize
768KB

Download
memory/2156-0-0x0000000074ACE000-0x0000000074ACF000-memory.dmp

Filesize
4KB

Download
memory/2808-28-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2808-40-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2808-32-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2808-29-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2808-26-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2808-24-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2808-22-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2808-20-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2808-18-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2808-16-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2808-14-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2808-36-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2808-38-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2808-33-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2808-41-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2808-42-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2808-44-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2808-12-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2808-52-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2808-51-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2808-60-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2808-61-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2808-67-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2808-68-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2808-76-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2808-75-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads