remcos | fd9c0fb6f463cee4975445c4ff19301daeed95a081f0428c5ef7aad815dd7277

Analysis

max time kernel
148s
max time network
147s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
09-09-2024 01:26

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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
4468	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-1-5-21-1302416131-1437503476-2806442725-1000\Control Panel\International\Geo\Nation	fd9c0fb6f463cee4975445c4ff19301daeed95a081f0428c5ef7aad815dd7277.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2316 set thread context of 3792	2316	fd9c0fb6f463cee4975445c4ff19301daeed95a081f0428c5ef7aad815dd7277.exe	95

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	fd9c0fb6f463cee4975445c4ff19301daeed95a081f0428c5ef7aad815dd7277.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	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
3216	schtasks.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2316	fd9c0fb6f463cee4975445c4ff19301daeed95a081f0428c5ef7aad815dd7277.exe
4468	powershell.exe
2316	fd9c0fb6f463cee4975445c4ff19301daeed95a081f0428c5ef7aad815dd7277.exe
4468	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2316	fd9c0fb6f463cee4975445c4ff19301daeed95a081f0428c5ef7aad815dd7277.exe
Token: SeDebugPrivilege	4468	powershell.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
3792	fd9c0fb6f463cee4975445c4ff19301daeed95a081f0428c5ef7aad815dd7277.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
3792	fd9c0fb6f463cee4975445c4ff19301daeed95a081f0428c5ef7aad815dd7277.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3792	fd9c0fb6f463cee4975445c4ff19301daeed95a081f0428c5ef7aad815dd7277.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 2316 wrote to memory of 4468	2316	fd9c0fb6f463cee4975445c4ff19301daeed95a081f0428c5ef7aad815dd7277.exe	91
PID 2316 wrote to memory of 4468	2316	fd9c0fb6f463cee4975445c4ff19301daeed95a081f0428c5ef7aad815dd7277.exe	91
PID 2316 wrote to memory of 4468	2316	fd9c0fb6f463cee4975445c4ff19301daeed95a081f0428c5ef7aad815dd7277.exe	91
PID 2316 wrote to memory of 3216	2316	fd9c0fb6f463cee4975445c4ff19301daeed95a081f0428c5ef7aad815dd7277.exe	93
PID 2316 wrote to memory of 3216	2316	fd9c0fb6f463cee4975445c4ff19301daeed95a081f0428c5ef7aad815dd7277.exe	93
PID 2316 wrote to memory of 3216	2316	fd9c0fb6f463cee4975445c4ff19301daeed95a081f0428c5ef7aad815dd7277.exe	93
PID 2316 wrote to memory of 3792	2316	fd9c0fb6f463cee4975445c4ff19301daeed95a081f0428c5ef7aad815dd7277.exe	95
PID 2316 wrote to memory of 3792	2316	fd9c0fb6f463cee4975445c4ff19301daeed95a081f0428c5ef7aad815dd7277.exe	95
PID 2316 wrote to memory of 3792	2316	fd9c0fb6f463cee4975445c4ff19301daeed95a081f0428c5ef7aad815dd7277.exe	95
PID 2316 wrote to memory of 3792	2316	fd9c0fb6f463cee4975445c4ff19301daeed95a081f0428c5ef7aad815dd7277.exe	95
PID 2316 wrote to memory of 3792	2316	fd9c0fb6f463cee4975445c4ff19301daeed95a081f0428c5ef7aad815dd7277.exe	95
PID 2316 wrote to memory of 3792	2316	fd9c0fb6f463cee4975445c4ff19301daeed95a081f0428c5ef7aad815dd7277.exe	95
PID 2316 wrote to memory of 3792	2316	fd9c0fb6f463cee4975445c4ff19301daeed95a081f0428c5ef7aad815dd7277.exe	95
PID 2316 wrote to memory of 3792	2316	fd9c0fb6f463cee4975445c4ff19301daeed95a081f0428c5ef7aad815dd7277.exe	95
PID 2316 wrote to memory of 3792	2316	fd9c0fb6f463cee4975445c4ff19301daeed95a081f0428c5ef7aad815dd7277.exe	95
PID 2316 wrote to memory of 3792	2316	fd9c0fb6f463cee4975445c4ff19301daeed95a081f0428c5ef7aad815dd7277.exe	95
PID 2316 wrote to memory of 3792	2316	fd9c0fb6f463cee4975445c4ff19301daeed95a081f0428c5ef7aad815dd7277.exe	95
PID 2316 wrote to memory of 3792	2316	fd9c0fb6f463cee4975445c4ff19301daeed95a081f0428c5ef7aad815dd7277.exe	95

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:2316
- 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:4468
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\FuWEVfUSU" /XML "C:\Users\Admin\AppData\Local\Temp\tmp9B46.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:3216
- 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:3792

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
fc5878c5750d9162be90e94c1bc8aa04

SHA1
0aea942371d68c3d1709333ec26db6fd9b8b00cf

SHA256
19c8807341ad58c931bf508877525369265da90521d5b85ab06ff9d561503ee5

SHA512
3ebc75995f1f3bd7963bda21e31af687cbbf8915304f71542ae0107b13abf9009418c1ad5edcd57fb68393cf48bb998e39627dd27ce7d07164e4ad094dfd28b7

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_zw5wlar4.ewq.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp9B46.tmp

Filesize
1KB

MD5
7b8fb5e0d6607f18b1cceae1173d1f1a

SHA1
ac40ab72e94a3073b5c154a5c81f5c737e404d8b

SHA256
ace7f18dad1f09f35149188e2a779c9dab595f1fe1a2f5ad6b43b11e356c199b

SHA512
23d0e15f18fbc0902a57d5b4b977fc2a3989b51272a71d1d7c398bf14a367b1cd00e1b893c9950fcaff526801cb9ed4540cc881402b4ed422df7c2a195247aee

Download Submit
memory/2316-6-0x00000000051F0000-0x000000000528C000-memory.dmp

Filesize
624KB

Download
memory/2316-4-0x0000000004FD0000-0x0000000004FDA000-memory.dmp

Filesize
40KB

Download
memory/2316-5-0x0000000074B30000-0x00000000752E0000-memory.dmp

Filesize
7.7MB

Download
memory/2316-3-0x0000000004F00000-0x0000000004F92000-memory.dmp

Filesize
584KB

Download
memory/2316-7-0x00000000051D0000-0x00000000051E8000-memory.dmp

Filesize
96KB

Download
memory/2316-8-0x0000000074B3E000-0x0000000074B3F000-memory.dmp

Filesize
4KB

Download
memory/2316-9-0x0000000074B30000-0x00000000752E0000-memory.dmp

Filesize
7.7MB

Download
memory/2316-10-0x0000000006250000-0x0000000006310000-memory.dmp

Filesize
768KB

Download
memory/2316-39-0x0000000074B30000-0x00000000752E0000-memory.dmp

Filesize
7.7MB

Download
memory/2316-0-0x0000000074B3E000-0x0000000074B3F000-memory.dmp

Filesize
4KB

Download
memory/2316-2-0x00000000055A0000-0x0000000005B44000-memory.dmp

Filesize
5.6MB

Download
memory/2316-1-0x0000000000430000-0x000000000052E000-memory.dmp

Filesize
1016KB

Download
memory/3792-95-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3792-80-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3792-94-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3792-73-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3792-42-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3792-43-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3792-34-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3792-36-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3792-37-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3792-38-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3792-100-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3792-101-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3792-46-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4468-20-0x0000000005630000-0x0000000005696000-memory.dmp

Filesize
408KB

Download
memory/4468-41-0x0000000006070000-0x00000000060BC000-memory.dmp

Filesize
304KB

Download
memory/4468-40-0x0000000005E40000-0x0000000005E5E000-memory.dmp

Filesize
120KB

Download
memory/4468-33-0x0000000005840000-0x0000000005B94000-memory.dmp

Filesize
3.3MB

Download
memory/4468-47-0x0000000006410000-0x0000000006442000-memory.dmp

Filesize
200KB

Download
memory/4468-48-0x00000000753E0000-0x000000007542C000-memory.dmp

Filesize
304KB

Download
memory/4468-58-0x0000000006E00000-0x0000000006E1E000-memory.dmp

Filesize
120KB

Download
memory/4468-59-0x0000000007030000-0x00000000070D3000-memory.dmp

Filesize
652KB

Download
memory/4468-60-0x00000000077A0000-0x0000000007E1A000-memory.dmp

Filesize
6.5MB

Download
memory/4468-61-0x0000000007160000-0x000000000717A000-memory.dmp

Filesize
104KB

Download
memory/4468-62-0x00000000071D0000-0x00000000071DA000-memory.dmp

Filesize
40KB

Download
memory/4468-63-0x00000000073E0000-0x0000000007476000-memory.dmp

Filesize
600KB

Download
memory/4468-64-0x0000000007360000-0x0000000007371000-memory.dmp

Filesize
68KB

Download
memory/4468-65-0x0000000007390000-0x000000000739E000-memory.dmp

Filesize
56KB

Download
memory/4468-66-0x00000000073A0000-0x00000000073B4000-memory.dmp

Filesize
80KB

Download
memory/4468-67-0x00000000074A0000-0x00000000074BA000-memory.dmp

Filesize
104KB

Download
memory/4468-68-0x0000000007480000-0x0000000007488000-memory.dmp

Filesize
32KB

Download
memory/4468-71-0x0000000074B30000-0x00000000752E0000-memory.dmp

Filesize
7.7MB

Download
memory/4468-23-0x0000000074B30000-0x00000000752E0000-memory.dmp

Filesize
7.7MB

Download
memory/4468-22-0x0000000074B30000-0x00000000752E0000-memory.dmp

Filesize
7.7MB

Download
memory/4468-21-0x00000000057D0000-0x0000000005836000-memory.dmp

Filesize
408KB

Download
memory/4468-19-0x0000000004E60000-0x0000000004E82000-memory.dmp

Filesize
136KB

Download
memory/4468-16-0x0000000074B30000-0x00000000752E0000-memory.dmp

Filesize
7.7MB

Download
memory/4468-17-0x0000000005000000-0x0000000005628000-memory.dmp

Filesize
6.2MB

Download
memory/4468-15-0x0000000004860000-0x0000000004896000-memory.dmp

Filesize
216KB

Download