remcos | bb4bf3eb6ca4a9b81bf741b5d85d82127c8b8e716637e7d37450980c28f0178f

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
17-11-2024 14:42

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General

Target

bb4bf3eb6ca4a9b81bf741b5d85d82127c8b8e716637e7d37450980c28f0178fN.exe
Size

916KB
MD5

7c9117e9ec6db111cf1f67d512b5e800
SHA1

8b88b24bf4893a9c1dff2f79425f4cbea4a79bd5
SHA256

bb4bf3eb6ca4a9b81bf741b5d85d82127c8b8e716637e7d37450980c28f0178f
SHA512

a4cf30a429ebb4f2533538f51ef0314f7993b653a5989bac51d944eb4c163dc16745e858ddc81bbe400bce80f4ee839fb876abacc1dede69b491375fd0767cb2
SSDEEP

24576:bMyqk7d8gE/KTudG5Zl75eJzKo8BYttZ7npS4d:XZ8gE/KSdyT5u+fB6TpSo

Score

10^/10

remcos remotehost discovery execution rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

alibabaforwader.duckdns.org:60247

Attributes

audio_folder
MicRecords
audio_path
ApplicationPath
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-6XDESO
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
Remcos family
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
2540	powershell.exe
2680	powershell.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2744 set thread context of 1664	2744	bb4bf3eb6ca4a9b81bf741b5d85d82127c8b8e716637e7d37450980c28f0178fN.exe	37

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	bb4bf3eb6ca4a9b81bf741b5d85d82127c8b8e716637e7d37450980c28f0178fN.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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	bb4bf3eb6ca4a9b81bf741b5d85d82127c8b8e716637e7d37450980c28f0178fN.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
2576	schtasks.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
2744	bb4bf3eb6ca4a9b81bf741b5d85d82127c8b8e716637e7d37450980c28f0178fN.exe
2744	bb4bf3eb6ca4a9b81bf741b5d85d82127c8b8e716637e7d37450980c28f0178fN.exe
2744	bb4bf3eb6ca4a9b81bf741b5d85d82127c8b8e716637e7d37450980c28f0178fN.exe
2744	bb4bf3eb6ca4a9b81bf741b5d85d82127c8b8e716637e7d37450980c28f0178fN.exe
2744	bb4bf3eb6ca4a9b81bf741b5d85d82127c8b8e716637e7d37450980c28f0178fN.exe
2744	bb4bf3eb6ca4a9b81bf741b5d85d82127c8b8e716637e7d37450980c28f0178fN.exe
2744	bb4bf3eb6ca4a9b81bf741b5d85d82127c8b8e716637e7d37450980c28f0178fN.exe
2680	powershell.exe
2540	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2744	bb4bf3eb6ca4a9b81bf741b5d85d82127c8b8e716637e7d37450980c28f0178fN.exe
Token: SeDebugPrivilege	2540	powershell.exe
Token: SeDebugPrivilege	2680	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1664	bb4bf3eb6ca4a9b81bf741b5d85d82127c8b8e716637e7d37450980c28f0178fN.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2744 wrote to memory of 2680	2744	bb4bf3eb6ca4a9b81bf741b5d85d82127c8b8e716637e7d37450980c28f0178fN.exe	31
PID 2744 wrote to memory of 2680	2744	bb4bf3eb6ca4a9b81bf741b5d85d82127c8b8e716637e7d37450980c28f0178fN.exe	31
PID 2744 wrote to memory of 2680	2744	bb4bf3eb6ca4a9b81bf741b5d85d82127c8b8e716637e7d37450980c28f0178fN.exe	31
PID 2744 wrote to memory of 2680	2744	bb4bf3eb6ca4a9b81bf741b5d85d82127c8b8e716637e7d37450980c28f0178fN.exe	31
PID 2744 wrote to memory of 2540	2744	bb4bf3eb6ca4a9b81bf741b5d85d82127c8b8e716637e7d37450980c28f0178fN.exe	33
PID 2744 wrote to memory of 2540	2744	bb4bf3eb6ca4a9b81bf741b5d85d82127c8b8e716637e7d37450980c28f0178fN.exe	33
PID 2744 wrote to memory of 2540	2744	bb4bf3eb6ca4a9b81bf741b5d85d82127c8b8e716637e7d37450980c28f0178fN.exe	33
PID 2744 wrote to memory of 2540	2744	bb4bf3eb6ca4a9b81bf741b5d85d82127c8b8e716637e7d37450980c28f0178fN.exe	33
PID 2744 wrote to memory of 2576	2744	bb4bf3eb6ca4a9b81bf741b5d85d82127c8b8e716637e7d37450980c28f0178fN.exe	35
PID 2744 wrote to memory of 2576	2744	bb4bf3eb6ca4a9b81bf741b5d85d82127c8b8e716637e7d37450980c28f0178fN.exe	35
PID 2744 wrote to memory of 2576	2744	bb4bf3eb6ca4a9b81bf741b5d85d82127c8b8e716637e7d37450980c28f0178fN.exe	35
PID 2744 wrote to memory of 2576	2744	bb4bf3eb6ca4a9b81bf741b5d85d82127c8b8e716637e7d37450980c28f0178fN.exe	35
PID 2744 wrote to memory of 1664	2744	bb4bf3eb6ca4a9b81bf741b5d85d82127c8b8e716637e7d37450980c28f0178fN.exe	37
PID 2744 wrote to memory of 1664	2744	bb4bf3eb6ca4a9b81bf741b5d85d82127c8b8e716637e7d37450980c28f0178fN.exe	37
PID 2744 wrote to memory of 1664	2744	bb4bf3eb6ca4a9b81bf741b5d85d82127c8b8e716637e7d37450980c28f0178fN.exe	37
PID 2744 wrote to memory of 1664	2744	bb4bf3eb6ca4a9b81bf741b5d85d82127c8b8e716637e7d37450980c28f0178fN.exe	37
PID 2744 wrote to memory of 1664	2744	bb4bf3eb6ca4a9b81bf741b5d85d82127c8b8e716637e7d37450980c28f0178fN.exe	37
PID 2744 wrote to memory of 1664	2744	bb4bf3eb6ca4a9b81bf741b5d85d82127c8b8e716637e7d37450980c28f0178fN.exe	37
PID 2744 wrote to memory of 1664	2744	bb4bf3eb6ca4a9b81bf741b5d85d82127c8b8e716637e7d37450980c28f0178fN.exe	37
PID 2744 wrote to memory of 1664	2744	bb4bf3eb6ca4a9b81bf741b5d85d82127c8b8e716637e7d37450980c28f0178fN.exe	37
PID 2744 wrote to memory of 1664	2744	bb4bf3eb6ca4a9b81bf741b5d85d82127c8b8e716637e7d37450980c28f0178fN.exe	37
PID 2744 wrote to memory of 1664	2744	bb4bf3eb6ca4a9b81bf741b5d85d82127c8b8e716637e7d37450980c28f0178fN.exe	37
PID 2744 wrote to memory of 1664	2744	bb4bf3eb6ca4a9b81bf741b5d85d82127c8b8e716637e7d37450980c28f0178fN.exe	37

C:\Users\Admin\AppData\Local\Temp\bb4bf3eb6ca4a9b81bf741b5d85d82127c8b8e716637e7d37450980c28f0178fN.exe
"C:\Users\Admin\AppData\Local\Temp\bb4bf3eb6ca4a9b81bf741b5d85d82127c8b8e716637e7d37450980c28f0178fN.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2744
- 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\bb4bf3eb6ca4a9b81bf741b5d85d82127c8b8e716637e7d37450980c28f0178fN.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2680
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\pNlkzRsCluNDj.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2540
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\pNlkzRsCluNDj" /XML "C:\Users\Admin\AppData\Local\Temp\tmp4FB6.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2576
- C:\Users\Admin\AppData\Local\Temp\bb4bf3eb6ca4a9b81bf741b5d85d82127c8b8e716637e7d37450980c28f0178fN.exe
  "C:\Users\Admin\AppData\Local\Temp\bb4bf3eb6ca4a9b81bf741b5d85d82127c8b8e716637e7d37450980c28f0178fN.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:1664

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
7672481ddc3b98d9d0b88c74a3d692a0

SHA1
76d2d1bfc730e5baaa676bb8c77dbbdab8968baf

SHA256
ac7dfffc039c8436d3587ea0e03b1a8551b83d70a5ac5db1e12ea74245ebd4e2

SHA512
58db43e4b349a84bf4fa83b29b4dd775177e5b5d967ca88b5b8ededeeac83c2b1167582c7bff10b5299b61b9a15dfb9b7b98e7e94a52abda4a9de0f86f86e7a3

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp4FB6.tmp

Filesize
1KB

MD5
c38c2b2fa761ef390c5730326985e7b7

SHA1
c29096173120719bb8652be5aa78c1590081e9cf

SHA256
cedeaad34634b1ad5a096e065343c0569dd857e3a2ebe927bd0be656f25a89ce

SHA512
f8c5cc70f8278cdb21f82e459d08e425a849b78691c8c73025022fe9d45a9f56a8547ea9bdb694edb0e7082b9b16f5840e9981d5e0a05212b08668a796fc8465

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

Filesize
7KB

MD5
f695dab944bfaf89f7506d7d7a86c262

SHA1
b9ce3ad5d57015d1fa95109a6a3486355284989d

SHA256
67ba88cf290bba30598fff560a2184fd348bd84339cf5ee186866c7905e76dd1

SHA512
8d4bfad8b2ba15c7fcbcaefa748eeac4ae2cdffb9187376c0939467cb9e43690394e8add6940a71f4bb05d835deca7fef88eeb1d690427b96aa1beb9eaeb3d4f

Download Submit
memory/1664-53-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1664-87-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1664-92-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1664-90-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1664-19-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1664-37-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1664-34-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1664-33-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1664-32-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1664-31-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1664-57-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1664-54-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1664-88-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1664-56-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1664-86-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1664-85-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1664-29-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1664-27-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1664-39-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1664-40-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1664-41-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1664-42-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1664-43-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1664-46-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1664-47-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1664-49-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1664-50-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1664-51-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1664-52-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1664-23-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1664-89-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1664-22-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1664-83-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1664-58-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1664-59-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1664-60-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1664-61-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1664-26-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1664-63-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1664-64-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1664-65-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1664-66-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1664-67-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1664-68-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1664-70-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1664-71-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1664-72-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1664-73-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1664-74-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1664-75-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1664-76-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1664-78-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1664-79-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1664-80-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1664-81-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1664-82-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2744-2-0x00000000748E0000-0x0000000074FCE000-memory.dmp

Filesize
6.9MB

Download
memory/2744-38-0x00000000748E0000-0x0000000074FCE000-memory.dmp

Filesize
6.9MB

Download
memory/2744-6-0x0000000004FC0000-0x0000000005082000-memory.dmp

Filesize
776KB

Download
memory/2744-5-0x00000000748E0000-0x0000000074FCE000-memory.dmp

Filesize
6.9MB

Download
memory/2744-4-0x00000000748EE000-0x00000000748EF000-memory.dmp

Filesize
4KB

Download
memory/2744-3-0x0000000000260000-0x0000000000272000-memory.dmp

Filesize
72KB

Download
memory/2744-1-0x0000000000D10000-0x0000000000DFC000-memory.dmp

Filesize
944KB

Download
memory/2744-0-0x00000000748EE000-0x00000000748EF000-memory.dmp

Filesize
4KB

Download