remcos | 0432cb3a657e9bbc9d6ab246cba8191af7a85bae164488f1e680947c8c377e3a

Analysis

max time kernel
149s
max time network
150s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
29/09/2024, 18:20

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General

Target

INVB0987678000090000.exe
Size

904KB
MD5

4b08b3e2d346591d2f805256c63a8875
SHA1

8fb4067bf05ffeb0c16b9ac9ea38507889ca07b0
SHA256

f05ac4628bc3cc7da752894e47479c2f8532ed5c485943b7abb680a79d4dba9c
SHA512

ece878beb8a207d08a8978f1978548e7f32c1ec6ca36647aa5549b99fcc587bc2e79f999e5dd6f3d32f1f8370ccff98f588e03baa1a8bcba3201ae997f71ace3
SSDEEP

24576:7pItSAdsBeO/ECXs95roy+qdi3E4RPrgjizt:9tpekEGs9DdEkjiz

Score

10^/10

remcos remotehost discovery execution rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

107.175.229.139:8087

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-IZFV1M
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
2016	powershell.exe
2660	powershell.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2496 set thread context of 2876	2496	INVB0987678000090000.exe	39

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	INVB0987678000090000.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	INVB0987678000090000.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.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
2164	schtasks.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2496	INVB0987678000090000.exe
2496	INVB0987678000090000.exe
2496	INVB0987678000090000.exe
2496	INVB0987678000090000.exe
2660	powershell.exe
2016	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2496	INVB0987678000090000.exe
Token: SeDebugPrivilege	2660	powershell.exe
Token: SeDebugPrivilege	2016	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2876	INVB0987678000090000.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 2496 wrote to memory of 2660	2496	INVB0987678000090000.exe	31
PID 2496 wrote to memory of 2660	2496	INVB0987678000090000.exe	31
PID 2496 wrote to memory of 2660	2496	INVB0987678000090000.exe	31
PID 2496 wrote to memory of 2660	2496	INVB0987678000090000.exe	31
PID 2496 wrote to memory of 2016	2496	INVB0987678000090000.exe	33
PID 2496 wrote to memory of 2016	2496	INVB0987678000090000.exe	33
PID 2496 wrote to memory of 2016	2496	INVB0987678000090000.exe	33
PID 2496 wrote to memory of 2016	2496	INVB0987678000090000.exe	33
PID 2496 wrote to memory of 2164	2496	INVB0987678000090000.exe	34
PID 2496 wrote to memory of 2164	2496	INVB0987678000090000.exe	34
PID 2496 wrote to memory of 2164	2496	INVB0987678000090000.exe	34
PID 2496 wrote to memory of 2164	2496	INVB0987678000090000.exe	34
PID 2496 wrote to memory of 2936	2496	INVB0987678000090000.exe	37
PID 2496 wrote to memory of 2936	2496	INVB0987678000090000.exe	37
PID 2496 wrote to memory of 2936	2496	INVB0987678000090000.exe	37
PID 2496 wrote to memory of 2936	2496	INVB0987678000090000.exe	37
PID 2496 wrote to memory of 2792	2496	INVB0987678000090000.exe	38
PID 2496 wrote to memory of 2792	2496	INVB0987678000090000.exe	38
PID 2496 wrote to memory of 2792	2496	INVB0987678000090000.exe	38
PID 2496 wrote to memory of 2792	2496	INVB0987678000090000.exe	38
PID 2496 wrote to memory of 2876	2496	INVB0987678000090000.exe	39
PID 2496 wrote to memory of 2876	2496	INVB0987678000090000.exe	39
PID 2496 wrote to memory of 2876	2496	INVB0987678000090000.exe	39
PID 2496 wrote to memory of 2876	2496	INVB0987678000090000.exe	39
PID 2496 wrote to memory of 2876	2496	INVB0987678000090000.exe	39
PID 2496 wrote to memory of 2876	2496	INVB0987678000090000.exe	39
PID 2496 wrote to memory of 2876	2496	INVB0987678000090000.exe	39
PID 2496 wrote to memory of 2876	2496	INVB0987678000090000.exe	39
PID 2496 wrote to memory of 2876	2496	INVB0987678000090000.exe	39
PID 2496 wrote to memory of 2876	2496	INVB0987678000090000.exe	39
PID 2496 wrote to memory of 2876	2496	INVB0987678000090000.exe	39
PID 2496 wrote to memory of 2876	2496	INVB0987678000090000.exe	39
PID 2496 wrote to memory of 2876	2496	INVB0987678000090000.exe	39

C:\Users\Admin\AppData\Local\Temp\INVB0987678000090000.exe
"C:\Users\Admin\AppData\Local\Temp\INVB0987678000090000.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2496
- 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\INVB0987678000090000.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2660
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\okDinu.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2016
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\okDinu" /XML "C:\Users\Admin\AppData\Local\Temp\tmpF6BE.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2164
- C:\Users\Admin\AppData\Local\Temp\INVB0987678000090000.exe
  "C:\Users\Admin\AppData\Local\Temp\INVB0987678000090000.exe"
  2⤵
  PID:2936
- C:\Users\Admin\AppData\Local\Temp\INVB0987678000090000.exe
  "C:\Users\Admin\AppData\Local\Temp\INVB0987678000090000.exe"
  2⤵
  PID:2792
- C:\Users\Admin\AppData\Local\Temp\INVB0987678000090000.exe
  "C:\Users\Admin\AppData\Local\Temp\INVB0987678000090000.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:2876

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\ProgramData\remcos\logs.dat

Filesize
144B

MD5
bab278492a710d13645df570bc963dce

SHA1
5f35f22ddc8beb571cc551ee6194bed62a74224c

SHA256
0d52a79d574e0f76db286670b707cfe687fff85defece47b0b3578fe9ff9af3f

SHA512
a606c46be1d43a92009ce258fa2e3da94dd9200af9896774d08156e8bf8c50bd626ad06311ede4d9c1438528a852fd01b68e1ea462162a86495ed4ccbf0ffb42

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpF6BE.tmp

Filesize
1KB

MD5
87578e06b3e97fe9a50c9bc0489f8422

SHA1
af0f0cb56f92416b05b0fdb1efb59091847918bf

SHA256
3da59d42085daf207fe5464ec5d1dde129eb389b438303bcb859996755c8413f

SHA512
0ed02b602e219995c0fafcfb310638962da7f2564af7ce36bdab64d182ea20ed2f62588ccd0abe1ba31a062fab8e1e79ffa065a2733b729c95e08f24de98fedb

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

Filesize
7KB

MD5
a10c8fd8625e3a2c4ebcb462b5d60487

SHA1
0bafce8c8522297990cbe9cc0a693d668d827b67

SHA256
d76b2c62c94ca20a3e1d90cce17bde6228f25b4f06626f2d7ef84d52316a4aa7

SHA512
2831acf798868227e1cb14f4c015385a008e2ec503f449fc4dea7a5507411d230ef3e20cb75529a68c1ada4f7292a78d45ed478e590a95eebf08a91e473aa5f3

Download Submit
memory/2496-3-0x0000000000570000-0x0000000000588000-memory.dmp

Filesize
96KB

Download
memory/2496-4-0x0000000000380000-0x0000000000388000-memory.dmp

Filesize
32KB

Download
memory/2496-5-0x00000000745EE000-0x00000000745EF000-memory.dmp

Filesize
4KB

Download
memory/2496-6-0x00000000745E0000-0x0000000074CCE000-memory.dmp

Filesize
6.9MB

Download
memory/2496-7-0x00000000003A0000-0x00000000003AA000-memory.dmp

Filesize
40KB

Download
memory/2496-8-0x0000000005A90000-0x0000000005B48000-memory.dmp

Filesize
736KB

Download
memory/2496-0-0x00000000745EE000-0x00000000745EF000-memory.dmp

Filesize
4KB

Download
memory/2496-2-0x00000000745E0000-0x0000000074CCE000-memory.dmp

Filesize
6.9MB

Download
memory/2496-1-0x00000000001C0000-0x00000000002A8000-memory.dmp

Filesize
928KB

Download
memory/2496-40-0x00000000745E0000-0x0000000074CCE000-memory.dmp

Filesize
6.9MB

Download
memory/2876-41-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2876-50-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2876-23-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2876-44-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2876-45-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2876-33-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2876-31-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2876-39-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2876-38-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2876-37-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2876-35-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2876-29-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2876-25-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2876-21-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2876-51-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2876-27-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2876-56-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2876-57-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2876-62-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2876-64-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2876-69-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2876-70-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2876-75-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2876-77-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2876-82-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2876-83-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download