remcos | b9fdce90b71b584cc85d90027dc206949a6d92cf92159112e2f96f5578fc78b7

Analysis

max time kernel
149s
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
04-12-2024 16:56

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General

Target

CIF 0983745 DOC.exe
Size

955KB
MD5

52c642cdb7298bb11558da681d352978
SHA1

5ffacf37fb2e05b0c7078f89554e949afd369318
SHA256

b9fdce90b71b584cc85d90027dc206949a6d92cf92159112e2f96f5578fc78b7
SHA512

daf8b97540c58b58a86a2e73fc907ced0ba332d19811047491d59ae40ce53dc9ed613773b107da5fb8d96b59c1247a18b35eb5fbe4c8be2b016f65a80594f7d0
SSDEEP

24576:0IeeIW8rjYO/CjNIvTc4ST4AWptCaWaZldbmi+3I:0BeBLhIvwHkB7CfaNdc

Score

10^/10

remcos remotehost discovery execution rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

ddpo.duckdns.org:59033

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-NUED7N
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 1 IoCs

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

execution

PowerShell

T1059.001

pid	Process
2916	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-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation	CIF 0983745 DOC.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3456 set thread context of 4928	3456	CIF 0983745 DOC.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 3 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	CIF 0983745 DOC.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	CIF 0983745 DOC.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2916	powershell.exe
2916	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2916	powershell.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 3456 wrote to memory of 2916	3456	CIF 0983745 DOC.exe	95
PID 3456 wrote to memory of 2916	3456	CIF 0983745 DOC.exe	95
PID 3456 wrote to memory of 2916	3456	CIF 0983745 DOC.exe	95
PID 3456 wrote to memory of 4928	3456	CIF 0983745 DOC.exe	97
PID 3456 wrote to memory of 4928	3456	CIF 0983745 DOC.exe	97
PID 3456 wrote to memory of 4928	3456	CIF 0983745 DOC.exe	97
PID 3456 wrote to memory of 4928	3456	CIF 0983745 DOC.exe	97
PID 3456 wrote to memory of 4928	3456	CIF 0983745 DOC.exe	97
PID 3456 wrote to memory of 4928	3456	CIF 0983745 DOC.exe	97
PID 3456 wrote to memory of 4928	3456	CIF 0983745 DOC.exe	97
PID 3456 wrote to memory of 4928	3456	CIF 0983745 DOC.exe	97
PID 3456 wrote to memory of 4928	3456	CIF 0983745 DOC.exe	97
PID 3456 wrote to memory of 4928	3456	CIF 0983745 DOC.exe	97

C:\Users\Admin\AppData\Local\Temp\CIF 0983745 DOC.exe
"C:\Users\Admin\AppData\Local\Temp\CIF 0983745 DOC.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3456
- 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\CIF 0983745 DOC.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2916
- C:\Users\Admin\AppData\Local\Temp\CIF 0983745 DOC.exe
  "C:\Users\Admin\AppData\Local\Temp\CIF 0983745 DOC.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4928

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Privilege Escalation

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_0ru1nw0b.nqe.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/2916-60-0x0000000007640000-0x0000000007654000-memory.dmp

Filesize
80KB

Download
memory/2916-62-0x0000000007680000-0x0000000007688000-memory.dmp

Filesize
32KB

Download
memory/2916-65-0x0000000074CA0000-0x0000000075450000-memory.dmp

Filesize
7.7MB

Download
memory/2916-61-0x0000000007690000-0x00000000076AA000-memory.dmp

Filesize
104KB

Download
memory/2916-59-0x0000000007630000-0x000000000763E000-memory.dmp

Filesize
56KB

Download
memory/2916-58-0x0000000007600000-0x0000000007611000-memory.dmp

Filesize
68KB

Download
memory/2916-39-0x0000000006930000-0x0000000006962000-memory.dmp

Filesize
200KB

Download
memory/2916-57-0x0000000007A20000-0x0000000007AB6000-memory.dmp

Filesize
600KB

Download
memory/2916-56-0x00000000075B0000-0x00000000075BA000-memory.dmp

Filesize
40KB

Download
memory/2916-55-0x0000000007540000-0x000000000755A000-memory.dmp

Filesize
104KB

Download
memory/2916-54-0x0000000007F60000-0x00000000085DA000-memory.dmp

Filesize
6.5MB

Download
memory/2916-53-0x00000000069E0000-0x0000000006A83000-memory.dmp

Filesize
652KB

Download
memory/2916-52-0x0000000074CA0000-0x0000000075450000-memory.dmp

Filesize
7.7MB

Download
memory/2916-50-0x0000000006910000-0x000000000692E000-memory.dmp

Filesize
120KB

Download
memory/2916-51-0x0000000074CA0000-0x0000000075450000-memory.dmp

Filesize
7.7MB

Download
memory/2916-18-0x0000000002B30000-0x0000000002B66000-memory.dmp

Filesize
216KB

Download
memory/2916-21-0x0000000005610000-0x0000000005C38000-memory.dmp

Filesize
6.2MB

Download
memory/2916-38-0x00000000064C0000-0x000000000650C000-memory.dmp

Filesize
304KB

Download
memory/2916-17-0x0000000074CAE000-0x0000000074CAF000-memory.dmp

Filesize
4KB

Download
memory/2916-40-0x00000000709D0000-0x0000000070A1C000-memory.dmp

Filesize
304KB

Download
memory/2916-22-0x0000000074CA0000-0x0000000075450000-memory.dmp

Filesize
7.7MB

Download
memory/2916-23-0x0000000005460000-0x0000000005482000-memory.dmp

Filesize
136KB

Download
memory/2916-25-0x0000000005DA0000-0x0000000005E06000-memory.dmp

Filesize
408KB

Download
memory/2916-24-0x0000000005C40000-0x0000000005CA6000-memory.dmp

Filesize
408KB

Download
memory/2916-37-0x0000000006430000-0x000000000644E000-memory.dmp

Filesize
120KB

Download
memory/2916-31-0x0000000074CA0000-0x0000000075450000-memory.dmp

Filesize
7.7MB

Download
memory/2916-33-0x0000000005E10000-0x0000000006164000-memory.dmp

Filesize
3.3MB

Download
memory/3456-6-0x0000000004F00000-0x0000000004F18000-memory.dmp

Filesize
96KB

Download
memory/3456-5-0x0000000004CC0000-0x0000000004CCA000-memory.dmp

Filesize
40KB

Download
memory/3456-7-0x0000000074CAE000-0x0000000074CAF000-memory.dmp

Filesize
4KB

Download
memory/3456-19-0x0000000074CA0000-0x0000000075450000-memory.dmp

Filesize
7.7MB

Download
memory/3456-0-0x0000000074CAE000-0x0000000074CAF000-memory.dmp

Filesize
4KB

Download
memory/3456-3-0x0000000004B10000-0x0000000004BA2000-memory.dmp

Filesize
584KB

Download
memory/3456-2-0x0000000004FC0000-0x0000000005564000-memory.dmp

Filesize
5.6MB

Download
memory/3456-1-0x0000000000030000-0x0000000000124000-memory.dmp

Filesize
976KB

Download
memory/3456-4-0x0000000074CA0000-0x0000000075450000-memory.dmp

Filesize
7.7MB

Download
memory/3456-10-0x00000000086D0000-0x000000000876C000-memory.dmp

Filesize
624KB

Download
memory/3456-9-0x0000000005EF0000-0x0000000005FB4000-memory.dmp

Filesize
784KB

Download
memory/3456-8-0x0000000074CA0000-0x0000000075450000-memory.dmp

Filesize
7.7MB

Download
memory/4928-77-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4928-69-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4928-11-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4928-12-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4928-14-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4928-15-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4928-66-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4928-67-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4928-68-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4928-20-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4928-70-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4928-71-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4928-72-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4928-73-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4928-74-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4928-75-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4928-76-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4928-16-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download