remcos | 7b680538ff7c476f84a714a074991c165c6b77677066897f68ce8100dbf87a21

Analysis

max time kernel
150s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
10-09-2024 01:53

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General

Target

fd9c0fb6f463cee4975445c4ff19301daeed95a081f0428c5ef7aad815dd7277.exe
Size

993KB
MD5

d0da590b7edbc0da19fb22989e74094a
SHA1

96ebe02b6e7499acdf741aa1a770511345532cf3
SHA256

fd9c0fb6f463cee4975445c4ff19301daeed95a081f0428c5ef7aad815dd7277
SHA512

6f7547230d5e005b6a9f04db0cb0c64c501dacf6f4836b1061f6dc2135ab8a06f06a1c5d7f90bd87491b534e4bfc20068d498b55bf896d63058ec8035df03a9b
SSDEEP

24576:SUobyDHF8HpzkLmV4ZDeLnmx/E/oLZT2nGr4oI6:DZKJILmVmeKx8gZlI

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
4652	powershell.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-523280732-2327480845-3730041215-1000\Control Panel\International\Geo\Nation	fd9c0fb6f463cee4975445c4ff19301daeed95a081f0428c5ef7aad815dd7277.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4264 set thread context of 4152	4264	fd9c0fb6f463cee4975445c4ff19301daeed95a081f0428c5ef7aad815dd7277.exe	97

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	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	fd9c0fb6f463cee4975445c4ff19301daeed95a081f0428c5ef7aad815dd7277.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	fd9c0fb6f463cee4975445c4ff19301daeed95a081f0428c5ef7aad815dd7277.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
1324	schtasks.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4264	fd9c0fb6f463cee4975445c4ff19301daeed95a081f0428c5ef7aad815dd7277.exe
4652	powershell.exe
4264	fd9c0fb6f463cee4975445c4ff19301daeed95a081f0428c5ef7aad815dd7277.exe
4652	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4264	fd9c0fb6f463cee4975445c4ff19301daeed95a081f0428c5ef7aad815dd7277.exe
Token: SeDebugPrivilege	4652	powershell.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
4152	fd9c0fb6f463cee4975445c4ff19301daeed95a081f0428c5ef7aad815dd7277.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
4152	fd9c0fb6f463cee4975445c4ff19301daeed95a081f0428c5ef7aad815dd7277.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4152	fd9c0fb6f463cee4975445c4ff19301daeed95a081f0428c5ef7aad815dd7277.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 4264 wrote to memory of 4652	4264	fd9c0fb6f463cee4975445c4ff19301daeed95a081f0428c5ef7aad815dd7277.exe	93
PID 4264 wrote to memory of 4652	4264	fd9c0fb6f463cee4975445c4ff19301daeed95a081f0428c5ef7aad815dd7277.exe	93
PID 4264 wrote to memory of 4652	4264	fd9c0fb6f463cee4975445c4ff19301daeed95a081f0428c5ef7aad815dd7277.exe	93
PID 4264 wrote to memory of 1324	4264	fd9c0fb6f463cee4975445c4ff19301daeed95a081f0428c5ef7aad815dd7277.exe	95
PID 4264 wrote to memory of 1324	4264	fd9c0fb6f463cee4975445c4ff19301daeed95a081f0428c5ef7aad815dd7277.exe	95
PID 4264 wrote to memory of 1324	4264	fd9c0fb6f463cee4975445c4ff19301daeed95a081f0428c5ef7aad815dd7277.exe	95
PID 4264 wrote to memory of 4152	4264	fd9c0fb6f463cee4975445c4ff19301daeed95a081f0428c5ef7aad815dd7277.exe	97
PID 4264 wrote to memory of 4152	4264	fd9c0fb6f463cee4975445c4ff19301daeed95a081f0428c5ef7aad815dd7277.exe	97
PID 4264 wrote to memory of 4152	4264	fd9c0fb6f463cee4975445c4ff19301daeed95a081f0428c5ef7aad815dd7277.exe	97
PID 4264 wrote to memory of 4152	4264	fd9c0fb6f463cee4975445c4ff19301daeed95a081f0428c5ef7aad815dd7277.exe	97
PID 4264 wrote to memory of 4152	4264	fd9c0fb6f463cee4975445c4ff19301daeed95a081f0428c5ef7aad815dd7277.exe	97
PID 4264 wrote to memory of 4152	4264	fd9c0fb6f463cee4975445c4ff19301daeed95a081f0428c5ef7aad815dd7277.exe	97
PID 4264 wrote to memory of 4152	4264	fd9c0fb6f463cee4975445c4ff19301daeed95a081f0428c5ef7aad815dd7277.exe	97
PID 4264 wrote to memory of 4152	4264	fd9c0fb6f463cee4975445c4ff19301daeed95a081f0428c5ef7aad815dd7277.exe	97
PID 4264 wrote to memory of 4152	4264	fd9c0fb6f463cee4975445c4ff19301daeed95a081f0428c5ef7aad815dd7277.exe	97
PID 4264 wrote to memory of 4152	4264	fd9c0fb6f463cee4975445c4ff19301daeed95a081f0428c5ef7aad815dd7277.exe	97
PID 4264 wrote to memory of 4152	4264	fd9c0fb6f463cee4975445c4ff19301daeed95a081f0428c5ef7aad815dd7277.exe	97
PID 4264 wrote to memory of 4152	4264	fd9c0fb6f463cee4975445c4ff19301daeed95a081f0428c5ef7aad815dd7277.exe	97

C:\Users\Admin\AppData\Local\Temp\fd9c0fb6f463cee4975445c4ff19301daeed95a081f0428c5ef7aad815dd7277.exe
"C:\Users\Admin\AppData\Local\Temp\fd9c0fb6f463cee4975445c4ff19301daeed95a081f0428c5ef7aad815dd7277.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4264
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\FuWEVfUSU.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4652
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\FuWEVfUSU" /XML "C:\Users\Admin\AppData\Local\Temp\tmpD438.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:1324
- C:\Users\Admin\AppData\Local\Temp\fd9c0fb6f463cee4975445c4ff19301daeed95a081f0428c5ef7aad815dd7277.exe
  "C:\Users\Admin\AppData\Local\Temp\fd9c0fb6f463cee4975445c4ff19301daeed95a081f0428c5ef7aad815dd7277.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of SetWindowsHookEx
  PID:4152

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

Query Registry

T1012

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
6d8b00ea4fe16346ce1ff766e4906465

SHA1
313e9de23ba8d9f890abcd95b00b17615de8bee4

SHA256
f1b3f1eea6caaaa3941d8f7779a847234aa35dc093c43a633db41894c7103b83

SHA512
9b789421f50215369525ce0f9d85c0f1b67b3b2a42ae9eb5e3620f86c4182e9622060786c269fde6e53c83689542946e39ea54aea4f2bee404a4e01d863095c0

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_2kwqvsir.52o.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpD438.tmp

Filesize
1KB

MD5
115d450d9a3dfea2c3f107da904cb70a

SHA1
4517845f85898d00cfbea6f96640230ced68e77c

SHA256
341ebd92f65ebee86172b6c35d8dee126b296076fdad7bd59f901ccb910247d8

SHA512
d5fe79e81e3755ef4fe884d7a98707445d2f3beb209bfc9f67b932e54192014d54e69f46eb2b1a2de32931370775f426e42e43d21291ff74b8933f3b9f69d204

Download Submit
memory/4152-41-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4152-44-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4152-68-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4152-72-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4152-89-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4152-79-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4152-81-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4152-30-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4152-114-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4152-36-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4152-106-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4152-47-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4152-105-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4152-98-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4152-97-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4152-90-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4152-82-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4152-40-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4152-113-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4152-37-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4152-31-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4152-67-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4264-1-0x0000000000910000-0x0000000000A0E000-memory.dmp

Filesize
1016KB

Download
memory/4264-39-0x0000000074580000-0x0000000074D30000-memory.dmp

Filesize
7.7MB

Download
memory/4264-2-0x0000000005A10000-0x0000000005FB4000-memory.dmp

Filesize
5.6MB

Download
memory/4264-4-0x0000000005400000-0x000000000540A000-memory.dmp

Filesize
40KB

Download
memory/4264-10-0x0000000006700000-0x00000000067C0000-memory.dmp

Filesize
768KB

Download
memory/4264-0-0x000000007458E000-0x000000007458F000-memory.dmp

Filesize
4KB

Download
memory/4264-7-0x00000000056A0000-0x00000000056B8000-memory.dmp

Filesize
96KB

Download
memory/4264-3-0x0000000005460000-0x00000000054F2000-memory.dmp

Filesize
584KB

Download
memory/4264-9-0x0000000074580000-0x0000000074D30000-memory.dmp

Filesize
7.7MB

Download
memory/4264-8-0x000000007458E000-0x000000007458F000-memory.dmp

Filesize
4KB

Download
memory/4264-6-0x00000000056D0000-0x000000000576C000-memory.dmp

Filesize
624KB

Download
memory/4264-5-0x0000000074580000-0x0000000074D30000-memory.dmp

Filesize
7.7MB

Download
memory/4652-45-0x0000000006360000-0x000000000637E000-memory.dmp

Filesize
120KB

Download
memory/4652-62-0x0000000007680000-0x000000000769A000-memory.dmp

Filesize
104KB

Download
memory/4652-63-0x00000000076F0000-0x00000000076FA000-memory.dmp

Filesize
40KB

Download
memory/4652-64-0x0000000007900000-0x0000000007996000-memory.dmp

Filesize
600KB

Download
memory/4652-65-0x0000000007880000-0x0000000007891000-memory.dmp

Filesize
68KB

Download
memory/4652-66-0x00000000078B0000-0x00000000078BE000-memory.dmp

Filesize
56KB

Download
memory/4652-61-0x0000000007CD0000-0x000000000834A000-memory.dmp

Filesize
6.5MB

Download
memory/4652-69-0x00000000078C0000-0x00000000078D4000-memory.dmp

Filesize
80KB

Download
memory/4652-60-0x0000000007340000-0x00000000073E3000-memory.dmp

Filesize
652KB

Download
memory/4652-70-0x00000000079C0000-0x00000000079DA000-memory.dmp

Filesize
104KB

Download
memory/4652-71-0x00000000079A0000-0x00000000079A8000-memory.dmp

Filesize
32KB

Download
memory/4652-59-0x0000000006900000-0x000000000691E000-memory.dmp

Filesize
120KB

Download
memory/4652-77-0x0000000074580000-0x0000000074D30000-memory.dmp

Filesize
7.7MB

Download
memory/4652-49-0x0000000073020000-0x000000007306C000-memory.dmp

Filesize
304KB

Download
memory/4652-48-0x0000000006920000-0x0000000006952000-memory.dmp

Filesize
200KB

Download
memory/4652-46-0x00000000063F0000-0x000000000643C000-memory.dmp

Filesize
304KB

Download
memory/4652-19-0x0000000074580000-0x0000000074D30000-memory.dmp

Filesize
7.7MB

Download
memory/4652-24-0x0000000005DF0000-0x0000000006144000-memory.dmp

Filesize
3.3MB

Download
memory/4652-23-0x0000000074580000-0x0000000074D30000-memory.dmp

Filesize
7.7MB

Download
memory/4652-22-0x00000000055A0000-0x0000000005606000-memory.dmp

Filesize
408KB

Download
memory/4652-21-0x0000000005530000-0x0000000005596000-memory.dmp

Filesize
408KB

Download
memory/4652-20-0x0000000005390000-0x00000000053B2000-memory.dmp

Filesize
136KB

Download
memory/4652-17-0x00000000057C0000-0x0000000005DE8000-memory.dmp

Filesize
6.2MB

Download
memory/4652-16-0x0000000074580000-0x0000000074D30000-memory.dmp

Filesize
7.7MB

Download
memory/4652-15-0x0000000002A20000-0x0000000002A56000-memory.dmp

Filesize
216KB

Download