remcos | 2059894744994d02d06075173056dff2829559bb1a073ef43d105df3f1e6707f

Analysis

max time kernel
149s
max time network
148s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
14-09-2024 01:21

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General

Target

da9e45efadb2232b4c6f1ec165bd01a0c9d274f045d058b5c1376106b47b053f.exe
Size

881KB
MD5

8da358d4b7d180480aba90d78ecff7ae
SHA1

9b1858ad42d183226460c7f09f2a657c3ed9279a
SHA256

da9e45efadb2232b4c6f1ec165bd01a0c9d274f045d058b5c1376106b47b053f
SHA512

c3ef79026467411e9dabd624549a510e92356d559938ec37352289d99f07c934c893b8c1a0cb308056027e6e8fb1aeeda01148f256d3e2d0a2b7108a737b5baa
SSDEEP

24576:qBnnC3qGtqYqAy2BGVDNE61G43uig/IhdpkE:BaG1ZBAD71GFf6w

Score

10^/10

remcos udu discovery execution rat

Malware Config

Extracted

Family

remcos

Botnet

udu

UDUM.WORK.GD:2431

Attributes

audio_folder
MicRecords
audio_record_time
5
connect_delay
0
connect_interval
1
copy_file
remcos.exe
copy_folder
vlc
delete_file
false
hide_file
false
hide_keylog_file
false
install_flag
false
keylog_crypt
true
keylog_file
logs.dat
keylog_flag
false
keylog_folder
sos
mouse_option
false
mutex
udm-2WYU92
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 1 IoCs

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

execution

PowerShell

T1059.001

pid	Process
2656	powershell.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2400 set thread context of 2536	2400	da9e45efadb2232b4c6f1ec165bd01a0c9d274f045d058b5c1376106b47b053f.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 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	da9e45efadb2232b4c6f1ec165bd01a0c9d274f045d058b5c1376106b47b053f.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	da9e45efadb2232b4c6f1ec165bd01a0c9d274f045d058b5c1376106b47b053f.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
2768	schtasks.exe

Suspicious behavior: EnumeratesProcesses 7 IoCs

pid	Process
2400	da9e45efadb2232b4c6f1ec165bd01a0c9d274f045d058b5c1376106b47b053f.exe
2400	da9e45efadb2232b4c6f1ec165bd01a0c9d274f045d058b5c1376106b47b053f.exe
2400	da9e45efadb2232b4c6f1ec165bd01a0c9d274f045d058b5c1376106b47b053f.exe
2400	da9e45efadb2232b4c6f1ec165bd01a0c9d274f045d058b5c1376106b47b053f.exe
2400	da9e45efadb2232b4c6f1ec165bd01a0c9d274f045d058b5c1376106b47b053f.exe
2400	da9e45efadb2232b4c6f1ec165bd01a0c9d274f045d058b5c1376106b47b053f.exe
2656	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2400	da9e45efadb2232b4c6f1ec165bd01a0c9d274f045d058b5c1376106b47b053f.exe
Token: SeDebugPrivilege	2656	powershell.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2536	da9e45efadb2232b4c6f1ec165bd01a0c9d274f045d058b5c1376106b47b053f.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
2536	da9e45efadb2232b4c6f1ec165bd01a0c9d274f045d058b5c1376106b47b053f.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2536	da9e45efadb2232b4c6f1ec165bd01a0c9d274f045d058b5c1376106b47b053f.exe

Suspicious use of WriteProcessMemory 29 IoCs

description	pid	Process	procid_target
PID 2400 wrote to memory of 2656	2400	da9e45efadb2232b4c6f1ec165bd01a0c9d274f045d058b5c1376106b47b053f.exe	30
PID 2400 wrote to memory of 2656	2400	da9e45efadb2232b4c6f1ec165bd01a0c9d274f045d058b5c1376106b47b053f.exe	30
PID 2400 wrote to memory of 2656	2400	da9e45efadb2232b4c6f1ec165bd01a0c9d274f045d058b5c1376106b47b053f.exe	30
PID 2400 wrote to memory of 2656	2400	da9e45efadb2232b4c6f1ec165bd01a0c9d274f045d058b5c1376106b47b053f.exe	30
PID 2400 wrote to memory of 2768	2400	da9e45efadb2232b4c6f1ec165bd01a0c9d274f045d058b5c1376106b47b053f.exe	32
PID 2400 wrote to memory of 2768	2400	da9e45efadb2232b4c6f1ec165bd01a0c9d274f045d058b5c1376106b47b053f.exe	32
PID 2400 wrote to memory of 2768	2400	da9e45efadb2232b4c6f1ec165bd01a0c9d274f045d058b5c1376106b47b053f.exe	32
PID 2400 wrote to memory of 2768	2400	da9e45efadb2232b4c6f1ec165bd01a0c9d274f045d058b5c1376106b47b053f.exe	32
PID 2400 wrote to memory of 2596	2400	da9e45efadb2232b4c6f1ec165bd01a0c9d274f045d058b5c1376106b47b053f.exe	34
PID 2400 wrote to memory of 2596	2400	da9e45efadb2232b4c6f1ec165bd01a0c9d274f045d058b5c1376106b47b053f.exe	34
PID 2400 wrote to memory of 2596	2400	da9e45efadb2232b4c6f1ec165bd01a0c9d274f045d058b5c1376106b47b053f.exe	34
PID 2400 wrote to memory of 2596	2400	da9e45efadb2232b4c6f1ec165bd01a0c9d274f045d058b5c1376106b47b053f.exe	34
PID 2400 wrote to memory of 2540	2400	da9e45efadb2232b4c6f1ec165bd01a0c9d274f045d058b5c1376106b47b053f.exe	35
PID 2400 wrote to memory of 2540	2400	da9e45efadb2232b4c6f1ec165bd01a0c9d274f045d058b5c1376106b47b053f.exe	35
PID 2400 wrote to memory of 2540	2400	da9e45efadb2232b4c6f1ec165bd01a0c9d274f045d058b5c1376106b47b053f.exe	35
PID 2400 wrote to memory of 2540	2400	da9e45efadb2232b4c6f1ec165bd01a0c9d274f045d058b5c1376106b47b053f.exe	35
PID 2400 wrote to memory of 2536	2400	da9e45efadb2232b4c6f1ec165bd01a0c9d274f045d058b5c1376106b47b053f.exe	36
PID 2400 wrote to memory of 2536	2400	da9e45efadb2232b4c6f1ec165bd01a0c9d274f045d058b5c1376106b47b053f.exe	36
PID 2400 wrote to memory of 2536	2400	da9e45efadb2232b4c6f1ec165bd01a0c9d274f045d058b5c1376106b47b053f.exe	36
PID 2400 wrote to memory of 2536	2400	da9e45efadb2232b4c6f1ec165bd01a0c9d274f045d058b5c1376106b47b053f.exe	36
PID 2400 wrote to memory of 2536	2400	da9e45efadb2232b4c6f1ec165bd01a0c9d274f045d058b5c1376106b47b053f.exe	36
PID 2400 wrote to memory of 2536	2400	da9e45efadb2232b4c6f1ec165bd01a0c9d274f045d058b5c1376106b47b053f.exe	36
PID 2400 wrote to memory of 2536	2400	da9e45efadb2232b4c6f1ec165bd01a0c9d274f045d058b5c1376106b47b053f.exe	36
PID 2400 wrote to memory of 2536	2400	da9e45efadb2232b4c6f1ec165bd01a0c9d274f045d058b5c1376106b47b053f.exe	36
PID 2400 wrote to memory of 2536	2400	da9e45efadb2232b4c6f1ec165bd01a0c9d274f045d058b5c1376106b47b053f.exe	36
PID 2400 wrote to memory of 2536	2400	da9e45efadb2232b4c6f1ec165bd01a0c9d274f045d058b5c1376106b47b053f.exe	36
PID 2400 wrote to memory of 2536	2400	da9e45efadb2232b4c6f1ec165bd01a0c9d274f045d058b5c1376106b47b053f.exe	36
PID 2400 wrote to memory of 2536	2400	da9e45efadb2232b4c6f1ec165bd01a0c9d274f045d058b5c1376106b47b053f.exe	36
PID 2400 wrote to memory of 2536	2400	da9e45efadb2232b4c6f1ec165bd01a0c9d274f045d058b5c1376106b47b053f.exe	36

C:\Users\Admin\AppData\Local\Temp\da9e45efadb2232b4c6f1ec165bd01a0c9d274f045d058b5c1376106b47b053f.exe
"C:\Users\Admin\AppData\Local\Temp\da9e45efadb2232b4c6f1ec165bd01a0c9d274f045d058b5c1376106b47b053f.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2400
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\mjbXtJDvJVt.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2656
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\mjbXtJDvJVt" /XML "C:\Users\Admin\AppData\Local\Temp\tmp8CA6.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2768
- C:\Users\Admin\AppData\Local\Temp\da9e45efadb2232b4c6f1ec165bd01a0c9d274f045d058b5c1376106b47b053f.exe
  "C:\Users\Admin\AppData\Local\Temp\da9e45efadb2232b4c6f1ec165bd01a0c9d274f045d058b5c1376106b47b053f.exe"
  2⤵
  PID:2596
- C:\Users\Admin\AppData\Local\Temp\da9e45efadb2232b4c6f1ec165bd01a0c9d274f045d058b5c1376106b47b053f.exe
  "C:\Users\Admin\AppData\Local\Temp\da9e45efadb2232b4c6f1ec165bd01a0c9d274f045d058b5c1376106b47b053f.exe"
  2⤵
  PID:2540
- C:\Users\Admin\AppData\Local\Temp\da9e45efadb2232b4c6f1ec165bd01a0c9d274f045d058b5c1376106b47b053f.exe
  "C:\Users\Admin\AppData\Local\Temp\da9e45efadb2232b4c6f1ec165bd01a0c9d274f045d058b5c1376106b47b053f.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of SetWindowsHookEx
  PID:2536

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\sos\logs.dat

Filesize
318B

MD5
704a835e34db508e3470445f9a7fc317

SHA1
937b7740fe7f4b7a384bcdd158d70045d957eff9

SHA256
bbf630bdabdaae15af12ab15ddefc4db251b30206a29a4951bde3e1d80c501cc

SHA512
b43ab2ff0eb0109e3cb0961c5a8a1823fc570ce6a9dbf3b56ff1ff1f8d06ba07d260ec296b28206b80cb755a1df1b8519cc09c7f1e262c4dc902aac044dfdea1

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp8CA6.tmp

Filesize
1KB

MD5
5f5dc9b8e5a19cb2243ed8fc4ea48b4f

SHA1
efb433f6b49f8f9d7e51eea5334d5bcf8fa24348

SHA256
06e2396141d8db4c7f345c61d05e51de6e4372c874c518a84256454de70e540f

SHA512
7c1d526304010c272f87a9f1ffbac5ad81e4b2414e2f07477eab84cf01bf86d785bd2bd4d2ea297f7a007efbee97dafce10325172f175380e3ccfc7e4c2b4d82

Download Submit
memory/2400-38-0x0000000074B80000-0x000000007526E000-memory.dmp

Filesize
6.9MB

Download
memory/2400-1-0x0000000000180000-0x0000000000262000-memory.dmp

Filesize
904KB

Download
memory/2400-2-0x0000000074B80000-0x000000007526E000-memory.dmp

Filesize
6.9MB

Download
memory/2400-3-0x00000000004F0000-0x0000000000500000-memory.dmp

Filesize
64KB

Download
memory/2400-4-0x0000000074B8E000-0x0000000074B8F000-memory.dmp

Filesize
4KB

Download
memory/2400-5-0x0000000074B80000-0x000000007526E000-memory.dmp

Filesize
6.9MB

Download
memory/2400-6-0x0000000005540000-0x0000000005600000-memory.dmp

Filesize
768KB

Download
memory/2400-0-0x0000000074B8E000-0x0000000074B8F000-memory.dmp

Filesize
4KB

Download
memory/2536-22-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2536-39-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2536-33-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2536-32-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2536-30-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2536-28-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2536-26-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2536-24-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2536-34-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2536-20-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2536-19-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2536-17-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2536-14-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2536-37-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2536-44-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2536-45-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2536-31-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2536-50-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2536-52-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2536-57-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2536-58-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2536-63-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2536-64-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2536-70-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2536-71-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2536-76-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2536-77-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download