remcos | b4ea9fc8891fce7e255d583efa962256b0dee44df2de28f0e4d4ae8145f0ca5a

Analysis

max time kernel
149s
max time network
150s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
14/10/2024, 14:12

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General

Target

b4ea9fc8891fce7e255d583efa962256b0dee44df2de28f0e4d4ae8145f0ca5a.exe
Size

926KB
MD5

4d6e7990958750655c63899f3b4e96aa
SHA1

f4113dd8af0bc21a471273d17f4572f6d23782eb
SHA256

b4ea9fc8891fce7e255d583efa962256b0dee44df2de28f0e4d4ae8145f0ca5a
SHA512

b16b32d1076112835c6ade4b40b76cf98d851ae066c0f4b9d2054ce8c8208cc03a7fa0f3d59234d690fb37deb4775fd8f306eacd92c69df49d18c8b2331870e1
SSDEEP

24576:gduE/JmHlhNBv7XVWJp75vbl+JtiS6AMX+:g0E/JqNZZWJp9bl+96AMO

Score

10^/10

remcos zynova discovery execution rat

Malware Config

Extracted

Family

remcos

Botnet

zynova

cloudsave.duckdns.org:14645

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
Rmc-CJ3HJ1
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
2204	powershell.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 316 set thread context of 2136	316	b4ea9fc8891fce7e255d583efa962256b0dee44df2de28f0e4d4ae8145f0ca5a.exe	32

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	b4ea9fc8891fce7e255d583efa962256b0dee44df2de28f0e4d4ae8145f0ca5a.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b4ea9fc8891fce7e255d583efa962256b0dee44df2de28f0e4d4ae8145f0ca5a.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2204	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2204	powershell.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 316 wrote to memory of 2204	316	b4ea9fc8891fce7e255d583efa962256b0dee44df2de28f0e4d4ae8145f0ca5a.exe	30
PID 316 wrote to memory of 2204	316	b4ea9fc8891fce7e255d583efa962256b0dee44df2de28f0e4d4ae8145f0ca5a.exe	30
PID 316 wrote to memory of 2204	316	b4ea9fc8891fce7e255d583efa962256b0dee44df2de28f0e4d4ae8145f0ca5a.exe	30
PID 316 wrote to memory of 2204	316	b4ea9fc8891fce7e255d583efa962256b0dee44df2de28f0e4d4ae8145f0ca5a.exe	30
PID 316 wrote to memory of 2136	316	b4ea9fc8891fce7e255d583efa962256b0dee44df2de28f0e4d4ae8145f0ca5a.exe	32
PID 316 wrote to memory of 2136	316	b4ea9fc8891fce7e255d583efa962256b0dee44df2de28f0e4d4ae8145f0ca5a.exe	32
PID 316 wrote to memory of 2136	316	b4ea9fc8891fce7e255d583efa962256b0dee44df2de28f0e4d4ae8145f0ca5a.exe	32
PID 316 wrote to memory of 2136	316	b4ea9fc8891fce7e255d583efa962256b0dee44df2de28f0e4d4ae8145f0ca5a.exe	32
PID 316 wrote to memory of 2136	316	b4ea9fc8891fce7e255d583efa962256b0dee44df2de28f0e4d4ae8145f0ca5a.exe	32
PID 316 wrote to memory of 2136	316	b4ea9fc8891fce7e255d583efa962256b0dee44df2de28f0e4d4ae8145f0ca5a.exe	32
PID 316 wrote to memory of 2136	316	b4ea9fc8891fce7e255d583efa962256b0dee44df2de28f0e4d4ae8145f0ca5a.exe	32
PID 316 wrote to memory of 2136	316	b4ea9fc8891fce7e255d583efa962256b0dee44df2de28f0e4d4ae8145f0ca5a.exe	32
PID 316 wrote to memory of 2136	316	b4ea9fc8891fce7e255d583efa962256b0dee44df2de28f0e4d4ae8145f0ca5a.exe	32
PID 316 wrote to memory of 2136	316	b4ea9fc8891fce7e255d583efa962256b0dee44df2de28f0e4d4ae8145f0ca5a.exe	32
PID 316 wrote to memory of 2136	316	b4ea9fc8891fce7e255d583efa962256b0dee44df2de28f0e4d4ae8145f0ca5a.exe	32
PID 316 wrote to memory of 2136	316	b4ea9fc8891fce7e255d583efa962256b0dee44df2de28f0e4d4ae8145f0ca5a.exe	32
PID 316 wrote to memory of 2136	316	b4ea9fc8891fce7e255d583efa962256b0dee44df2de28f0e4d4ae8145f0ca5a.exe	32

C:\Users\Admin\AppData\Local\Temp\b4ea9fc8891fce7e255d583efa962256b0dee44df2de28f0e4d4ae8145f0ca5a.exe
"C:\Users\Admin\AppData\Local\Temp\b4ea9fc8891fce7e255d583efa962256b0dee44df2de28f0e4d4ae8145f0ca5a.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:316
- 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\b4ea9fc8891fce7e255d583efa962256b0dee44df2de28f0e4d4ae8145f0ca5a.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2204
- C:\Users\Admin\AppData\Local\Temp\b4ea9fc8891fce7e255d583efa962256b0dee44df2de28f0e4d4ae8145f0ca5a.exe
  "C:\Users\Admin\AppData\Local\Temp\b4ea9fc8891fce7e255d583efa962256b0dee44df2de28f0e4d4ae8145f0ca5a.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2136

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

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

memory/316-0-0x0000000074DDE000-0x0000000074DDF000-memory.dmp

Filesize
4KB

Download
memory/316-1-0x0000000001350000-0x000000000143C000-memory.dmp

Filesize
944KB

Download
memory/316-2-0x0000000074DD0000-0x00000000754BE000-memory.dmp

Filesize
6.9MB

Download
memory/316-3-0x0000000000310000-0x0000000000320000-memory.dmp

Filesize
64KB

Download
memory/316-4-0x0000000074DDE000-0x0000000074DDF000-memory.dmp

Filesize
4KB

Download
memory/316-5-0x0000000074DD0000-0x00000000754BE000-memory.dmp

Filesize
6.9MB

Download
memory/316-6-0x0000000005860000-0x0000000005920000-memory.dmp

Filesize
768KB

Download
memory/316-22-0x0000000074DD0000-0x00000000754BE000-memory.dmp

Filesize
6.9MB

Download
memory/2136-10-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2136-11-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2136-7-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2136-23-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2136-21-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2136-20-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2136-18-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2136-16-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2136-14-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2136-13-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2136-12-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2136-9-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2136-8-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2136-26-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2136-27-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2136-28-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2136-29-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2136-30-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2136-31-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2136-32-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2136-33-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2136-34-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2136-35-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2136-36-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2136-37-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2136-38-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2136-39-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2136-40-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2136-41-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2136-42-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2136-43-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2136-44-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2136-45-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2136-46-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2136-47-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2136-48-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2136-49-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2136-50-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2136-51-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2136-52-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2136-53-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2136-54-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2136-55-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2136-56-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2136-57-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2136-58-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2136-59-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2136-60-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2136-61-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2136-62-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2136-63-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2136-64-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2136-65-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2136-66-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2136-67-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2136-68-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2136-69-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2136-70-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2136-71-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2136-72-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2136-73-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download