remcos | 9a15bd4f82adcc32d13fb16af0bd33c4d3d028895c93f4ec2cc995d9ad5f2d01

General

Target

PO#720.exe
Size

914KB
MD5

57c246dd2b2221edbfd54ff9246a0099
SHA1

3e4dc6e19407ff041b25629082a90382be7b957f
SHA256

6fb1afbb72d328bdaca9c019107c5ce12c81bfbabac1f1b7426db29ffec79f96
SHA512

5a49e14dfaa8b6f53bc9e5da299f43d199389ded897c9a23ec6615c396bc83e6589787f0704fa097c395296d643fd0b6b3e83dbdddad385d2ee5af5825cea9e2
SSDEEP

24576:+Eb5NCjPBS2nv0frerFWM+u848EUjooYgyUKHdw:N5N+5S2nv0fKxIuRUjoSK

Score

10^/10

remcos throttle_8967 discovery execution rat

Malware Config

Extracted

Family

remcos

Botnet

throttle_8967

C2

154.216.18.217:8967

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-4SV4HO
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

Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

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

execution

PowerShell

T1059.001

pid	Process
2652	powershell.exe
2088	powershell.exe

Uses the VBS compiler for execution 1 TTPs

Scripting
T1064

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1608 set thread context of 2928	1608	PO#720.exe	36

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 5 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	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vbc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PO#720.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.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
2824	schtasks.exe

Suspicious behavior: EnumeratesProcesses 10 IoCs

pid	Process
1608	PO#720.exe
1608	PO#720.exe
1608	PO#720.exe
1608	PO#720.exe
1608	PO#720.exe
1608	PO#720.exe
1608	PO#720.exe
2088	powershell.exe
2652	powershell.exe
1608	PO#720.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1608	PO#720.exe
Token: SeDebugPrivilege	2088	powershell.exe
Token: SeDebugPrivilege	2652	powershell.exe

Suspicious use of WriteProcessMemory 25 IoCs

description	pid	Process	procid_target
PID 1608 wrote to memory of 2652	1608	PO#720.exe	30
PID 1608 wrote to memory of 2652	1608	PO#720.exe	30
PID 1608 wrote to memory of 2652	1608	PO#720.exe	30
PID 1608 wrote to memory of 2652	1608	PO#720.exe	30
PID 1608 wrote to memory of 2088	1608	PO#720.exe	32
PID 1608 wrote to memory of 2088	1608	PO#720.exe	32
PID 1608 wrote to memory of 2088	1608	PO#720.exe	32
PID 1608 wrote to memory of 2088	1608	PO#720.exe	32
PID 1608 wrote to memory of 2824	1608	PO#720.exe	33
PID 1608 wrote to memory of 2824	1608	PO#720.exe	33
PID 1608 wrote to memory of 2824	1608	PO#720.exe	33
PID 1608 wrote to memory of 2824	1608	PO#720.exe	33
PID 1608 wrote to memory of 2928	1608	PO#720.exe	36
PID 1608 wrote to memory of 2928	1608	PO#720.exe	36
PID 1608 wrote to memory of 2928	1608	PO#720.exe	36
PID 1608 wrote to memory of 2928	1608	PO#720.exe	36
PID 1608 wrote to memory of 2928	1608	PO#720.exe	36
PID 1608 wrote to memory of 2928	1608	PO#720.exe	36
PID 1608 wrote to memory of 2928	1608	PO#720.exe	36
PID 1608 wrote to memory of 2928	1608	PO#720.exe	36
PID 1608 wrote to memory of 2928	1608	PO#720.exe	36
PID 1608 wrote to memory of 2928	1608	PO#720.exe	36
PID 1608 wrote to memory of 2928	1608	PO#720.exe	36
PID 1608 wrote to memory of 2928	1608	PO#720.exe	36
PID 1608 wrote to memory of 2928	1608	PO#720.exe	36

C:\Users\Admin\AppData\Local\Temp\PO#720.exe
"C:\Users\Admin\AppData\Local\Temp\PO#720.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1608
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\PO#720.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2652
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\VdrrjnwYc.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2088
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\VdrrjnwYc" /XML "C:\Users\Admin\AppData\Local\Temp\tmpDFB5.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2824
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2928

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

Scripting

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

Scripting

1

T1064

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:\Users\Admin\AppData\Local\Temp\tmpDFB5.tmp

Filesize
1KB

MD5
bb355bd385acdec2460e1017494d1b47

SHA1
8fcdb9dd462aee61129a08755417b1d08d16113d

SHA256
9c69de2acca05657fce1234716518e616a6591fb2d09ce77010e5a8b842d4749

SHA512
3633a6ff194cb43d95a635fa45275336188b1544c280b7b82896e7ef24b99329b9046ee0b842a3aa12d3ab29c89ffc1bd55aefcf43d78ab7f1e5ba708ef1aa52

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms

Filesize
7KB

MD5
e055044762e26899f7711dc431f7dd67

SHA1
f195844dc0ac3eba33563a1917f8bb7913adb87a

SHA256
7d150b4b476971bc4a5a049a5b16a2af71424b6455d235fd353a818443cfc4b1

SHA512
198c605bdadadc92721d22cb5141c275f5517360631b4e79b0622bfbd01a43f46abb4b62f716672ff0d4eebf3bedfb39c3e64756b34b2fdd70ef1aa81fdf5cbb

Download Submit
memory/1608-0-0x0000000074C5E000-0x0000000074C5F000-memory.dmp

Filesize
4KB

Download
memory/1608-1-0x0000000001320000-0x000000000140A000-memory.dmp

Filesize
936KB

Download
memory/1608-2-0x0000000074C50000-0x000000007533E000-memory.dmp

Filesize
6.9MB

Download
memory/1608-3-0x0000000000A00000-0x0000000000A18000-memory.dmp

Filesize
96KB

Download
memory/1608-4-0x0000000074C5E000-0x0000000074C5F000-memory.dmp

Filesize
4KB

Download
memory/1608-5-0x0000000074C50000-0x000000007533E000-memory.dmp

Filesize
6.9MB

Download
memory/1608-6-0x0000000005530000-0x00000000055F0000-memory.dmp

Filesize
768KB

Download
memory/1608-40-0x0000000074C50000-0x000000007533E000-memory.dmp

Filesize
6.9MB

Download
memory/2928-25-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2928-41-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2928-38-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2928-37-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2928-35-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

Filesize
4KB

Download
memory/2928-33-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2928-29-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2928-27-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2928-36-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2928-23-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2928-32-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2928-22-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2928-19-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2928-39-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2928-42-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2928-43-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2928-45-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2928-46-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2928-48-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2928-49-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2928-50-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2928-51-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2928-52-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2928-53-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2928-54-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2928-55-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads