remcos | 173fa94e725abc88acf0d848bdee94d216a3c74b4492e006405c357824fab818

Analysis

max time kernel
147s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
21/10/2024, 15:11

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General

Target

DHLAWB_NO_92847309329.exe
Size

933KB
MD5

710651fb293df9922080f5b7a4d10916
SHA1

a38b66874d59a9e026b2c15e49501e8f4e1fd6b5
SHA256

173fa94e725abc88acf0d848bdee94d216a3c74b4492e006405c357824fab818
SHA512

bdc25b6f70bab4352e7c03ae7fbcd6a9718fe98804d9b24f27dc33b0bba114f0bab2d37af1de53d4dbe0e2794f3e706dbd3ef3765de2820bbd48f4b347f132d9
SSDEEP

24576:nUkh5oDiJ31erRs6PXmm7V9R7SoAZA0C8/UYn2xlcX6:nn5oDiZgOCV9RWrtCAU3xi

Score

10^/10

remcos 76485 discovery execution rat

Malware Config

Extracted

Family

remcos

Botnet

76485

windowsocttehe.duckdns.org:52411

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
764-0XPV9J
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
startup_value
Remcos
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
1704	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-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation	DHLAWB_NO_92847309329.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4380 set thread context of 1652	4380	DHLAWB_NO_92847309329.exe	99

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	DHLAWB_NO_92847309329.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	DHLAWB_NO_92847309329.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
1776	schtasks.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1704	powershell.exe
1704	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1704	powershell.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 4380 wrote to memory of 1704	4380	DHLAWB_NO_92847309329.exe	95
PID 4380 wrote to memory of 1704	4380	DHLAWB_NO_92847309329.exe	95
PID 4380 wrote to memory of 1704	4380	DHLAWB_NO_92847309329.exe	95
PID 4380 wrote to memory of 1776	4380	DHLAWB_NO_92847309329.exe	97
PID 4380 wrote to memory of 1776	4380	DHLAWB_NO_92847309329.exe	97
PID 4380 wrote to memory of 1776	4380	DHLAWB_NO_92847309329.exe	97
PID 4380 wrote to memory of 1652	4380	DHLAWB_NO_92847309329.exe	99
PID 4380 wrote to memory of 1652	4380	DHLAWB_NO_92847309329.exe	99
PID 4380 wrote to memory of 1652	4380	DHLAWB_NO_92847309329.exe	99
PID 4380 wrote to memory of 1652	4380	DHLAWB_NO_92847309329.exe	99
PID 4380 wrote to memory of 1652	4380	DHLAWB_NO_92847309329.exe	99
PID 4380 wrote to memory of 1652	4380	DHLAWB_NO_92847309329.exe	99
PID 4380 wrote to memory of 1652	4380	DHLAWB_NO_92847309329.exe	99
PID 4380 wrote to memory of 1652	4380	DHLAWB_NO_92847309329.exe	99
PID 4380 wrote to memory of 1652	4380	DHLAWB_NO_92847309329.exe	99
PID 4380 wrote to memory of 1652	4380	DHLAWB_NO_92847309329.exe	99
PID 4380 wrote to memory of 1652	4380	DHLAWB_NO_92847309329.exe	99
PID 4380 wrote to memory of 1652	4380	DHLAWB_NO_92847309329.exe	99

C:\Users\Admin\AppData\Local\Temp\DHLAWB_NO_92847309329.exe
"C:\Users\Admin\AppData\Local\Temp\DHLAWB_NO_92847309329.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4380
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\rjOyFV.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1704
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\rjOyFV" /XML "C:\Users\Admin\AppData\Local\Temp\tmpDC27.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:1776
- C:\Users\Admin\AppData\Local\Temp\DHLAWB_NO_92847309329.exe
  "C:\Users\Admin\AppData\Local\Temp\DHLAWB_NO_92847309329.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1652

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:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_iynsw3ty.dhn.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpDC27.tmp

Filesize
1KB

MD5
9e95d5850b6e458c947dd49d1a4633c0

SHA1
a325d8014e684388eff329621e6f1f716ee65af4

SHA256
53516fbf5cbd831eef32f042575edb3aaa32e165e4b1ce7ea069398feb6b3e46

SHA512
f2952c89d85f2d8b5fef4ea5cc81a6e012a6bffccbf652c7208efbea9567476ba949eaecdd29cee402736fd44ed343a7cab075d8f06a0d4cea567d4388f2743e

Download Submit
memory/1652-61-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1652-58-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1652-77-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1652-76-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1652-75-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1652-74-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1652-81-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1652-78-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1652-57-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1652-41-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1652-34-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1652-36-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1652-39-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1652-82-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1652-38-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1652-35-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1704-17-0x00000000058C0000-0x0000000005EE8000-memory.dmp

Filesize
6.2MB

Download
memory/1704-59-0x0000000008030000-0x00000000086AA000-memory.dmp

Filesize
6.5MB

Download
memory/1704-22-0x0000000005EF0000-0x0000000005F56000-memory.dmp

Filesize
408KB

Download
memory/1704-33-0x00000000061A0000-0x00000000064F4000-memory.dmp

Filesize
3.3MB

Download
memory/1704-23-0x00000000747E0000-0x0000000074F90000-memory.dmp

Filesize
7.7MB

Download
memory/1704-20-0x0000000005600000-0x0000000005622000-memory.dmp

Filesize
136KB

Download
memory/1704-18-0x00000000747E0000-0x0000000074F90000-memory.dmp

Filesize
7.7MB

Download
memory/1704-73-0x00000000747E0000-0x0000000074F90000-memory.dmp

Filesize
7.7MB

Download
memory/1704-70-0x0000000007D00000-0x0000000007D08000-memory.dmp

Filesize
32KB

Download
memory/1704-16-0x00000000747E0000-0x0000000074F90000-memory.dmp

Filesize
7.7MB

Download
memory/1704-15-0x0000000005130000-0x0000000005166000-memory.dmp

Filesize
216KB

Download
memory/1704-42-0x00000000066B0000-0x00000000066CE000-memory.dmp

Filesize
120KB

Download
memory/1704-43-0x00000000066F0000-0x000000000673C000-memory.dmp

Filesize
304KB

Download
memory/1704-44-0x0000000007670000-0x00000000076A2000-memory.dmp

Filesize
200KB

Download
memory/1704-45-0x00000000732B0000-0x00000000732FC000-memory.dmp

Filesize
304KB

Download
memory/1704-55-0x0000000006C90000-0x0000000006CAE000-memory.dmp

Filesize
120KB

Download
memory/1704-56-0x00000000078B0000-0x0000000007953000-memory.dmp

Filesize
652KB

Download
memory/1704-69-0x0000000007D20000-0x0000000007D3A000-memory.dmp

Filesize
104KB

Download
memory/1704-68-0x0000000007C20000-0x0000000007C34000-memory.dmp

Filesize
80KB

Download
memory/1704-21-0x00000000057A0000-0x0000000005806000-memory.dmp

Filesize
408KB

Download
memory/1704-60-0x00000000079E0000-0x00000000079FA000-memory.dmp

Filesize
104KB

Download
memory/1704-67-0x0000000007C10000-0x0000000007C1E000-memory.dmp

Filesize
56KB

Download
memory/1704-62-0x0000000007A50000-0x0000000007A5A000-memory.dmp

Filesize
40KB

Download
memory/1704-65-0x0000000007C60000-0x0000000007CF6000-memory.dmp

Filesize
600KB

Download
memory/1704-66-0x0000000007BE0000-0x0000000007BF1000-memory.dmp

Filesize
68KB

Download
memory/4380-8-0x00000000747EE000-0x00000000747EF000-memory.dmp

Filesize
4KB

Download
memory/4380-9-0x00000000747E0000-0x0000000074F90000-memory.dmp

Filesize
7.7MB

Download
memory/4380-10-0x00000000092E0000-0x000000000939E000-memory.dmp

Filesize
760KB

Download
memory/4380-0-0x00000000747EE000-0x00000000747EF000-memory.dmp

Filesize
4KB

Download
memory/4380-40-0x00000000747E0000-0x0000000074F90000-memory.dmp

Filesize
7.7MB

Download
memory/4380-7-0x0000000006A20000-0x0000000006A3C000-memory.dmp

Filesize
112KB

Download
memory/4380-6-0x0000000005A20000-0x0000000005ABC000-memory.dmp

Filesize
624KB

Download
memory/4380-5-0x00000000747E0000-0x0000000074F90000-memory.dmp

Filesize
7.7MB

Download
memory/4380-4-0x0000000005970000-0x000000000597A000-memory.dmp

Filesize
40KB

Download
memory/4380-3-0x00000000057D0000-0x0000000005862000-memory.dmp

Filesize
584KB

Download
memory/4380-2-0x0000000005CE0000-0x0000000006284000-memory.dmp

Filesize
5.6MB

Download
memory/4380-1-0x0000000000D10000-0x0000000000E00000-memory.dmp

Filesize
960KB

Download