remcos | eb4172617d34c01a45390b880499b0c1eef52a466852241e5a2db92b660a5f41

Analysis

max time kernel
119s
max time network
108s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
27-09-2024 04:44

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General

Target

eb4172617d34c01a45390b880499b0c1eef52a466852241e5a2db92b660a5f41N.exe
Size

2.5MB
MD5

1627304a7d3f6859001efebde8c08220
SHA1

99d184f60f258ffaf6b64dc87e1c13b70d227009
SHA256

eb4172617d34c01a45390b880499b0c1eef52a466852241e5a2db92b660a5f41
SHA512

59704afd589bd797a07296a00639f8244d9bc7bcd071e6a0368aebb309cb8a6c3a270ed2e966945c5dc36819c61394dda204338cb2e814d770a502ab92aa6355
SSDEEP

24576:4u14cbiD+YsyBvUmrUeZ4nXksgBMVqYyFU:4udiD8mgemnXksgBMV0C

Score

10^/10

remcos remotehost discovery evasion execution rat trojan

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

127.0.0.1:47666

iamblessed.duckdns.org:47666

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-MFNROY
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

UAC bypass 3 TTPs 1 IoCs

evasion trojan

Bypass User Account Control

T1548.002

Disable or Modify Tools

T1562.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	eb4172617d34c01a45390b880499b0c1eef52a466852241e5a2db92b660a5f41N.exe

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
2764	powershell.exe

Checks whether UAC is enabled 1 TTPs 2 IoCs

evasion trojan

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	eb4172617d34c01a45390b880499b0c1eef52a466852241e5a2db92b660a5f41N.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	eb4172617d34c01a45390b880499b0c1eef52a466852241e5a2db92b660a5f41N.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2252 set thread context of 1844	2252	eb4172617d34c01a45390b880499b0c1eef52a466852241e5a2db92b660a5f41N.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 1 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	iexplore.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2764	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2764	powershell.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2252 wrote to memory of 2764	2252	eb4172617d34c01a45390b880499b0c1eef52a466852241e5a2db92b660a5f41N.exe	29
PID 2252 wrote to memory of 2764	2252	eb4172617d34c01a45390b880499b0c1eef52a466852241e5a2db92b660a5f41N.exe	29
PID 2252 wrote to memory of 2764	2252	eb4172617d34c01a45390b880499b0c1eef52a466852241e5a2db92b660a5f41N.exe	29
PID 2252 wrote to memory of 2792	2252	eb4172617d34c01a45390b880499b0c1eef52a466852241e5a2db92b660a5f41N.exe	31
PID 2252 wrote to memory of 2792	2252	eb4172617d34c01a45390b880499b0c1eef52a466852241e5a2db92b660a5f41N.exe	31
PID 2252 wrote to memory of 2792	2252	eb4172617d34c01a45390b880499b0c1eef52a466852241e5a2db92b660a5f41N.exe	31
PID 2252 wrote to memory of 2792	2252	eb4172617d34c01a45390b880499b0c1eef52a466852241e5a2db92b660a5f41N.exe	31
PID 2252 wrote to memory of 2792	2252	eb4172617d34c01a45390b880499b0c1eef52a466852241e5a2db92b660a5f41N.exe	31
PID 2252 wrote to memory of 2792	2252	eb4172617d34c01a45390b880499b0c1eef52a466852241e5a2db92b660a5f41N.exe	31
PID 2252 wrote to memory of 2792	2252	eb4172617d34c01a45390b880499b0c1eef52a466852241e5a2db92b660a5f41N.exe	31
PID 2252 wrote to memory of 2792	2252	eb4172617d34c01a45390b880499b0c1eef52a466852241e5a2db92b660a5f41N.exe	31
PID 2252 wrote to memory of 2792	2252	eb4172617d34c01a45390b880499b0c1eef52a466852241e5a2db92b660a5f41N.exe	31
PID 2252 wrote to memory of 2792	2252	eb4172617d34c01a45390b880499b0c1eef52a466852241e5a2db92b660a5f41N.exe	31
PID 2252 wrote to memory of 2792	2252	eb4172617d34c01a45390b880499b0c1eef52a466852241e5a2db92b660a5f41N.exe	31
PID 2252 wrote to memory of 1844	2252	eb4172617d34c01a45390b880499b0c1eef52a466852241e5a2db92b660a5f41N.exe	32
PID 2252 wrote to memory of 1844	2252	eb4172617d34c01a45390b880499b0c1eef52a466852241e5a2db92b660a5f41N.exe	32
PID 2252 wrote to memory of 1844	2252	eb4172617d34c01a45390b880499b0c1eef52a466852241e5a2db92b660a5f41N.exe	32
PID 2252 wrote to memory of 1844	2252	eb4172617d34c01a45390b880499b0c1eef52a466852241e5a2db92b660a5f41N.exe	32
PID 2252 wrote to memory of 1844	2252	eb4172617d34c01a45390b880499b0c1eef52a466852241e5a2db92b660a5f41N.exe	32
PID 2252 wrote to memory of 1844	2252	eb4172617d34c01a45390b880499b0c1eef52a466852241e5a2db92b660a5f41N.exe	32
PID 2252 wrote to memory of 1844	2252	eb4172617d34c01a45390b880499b0c1eef52a466852241e5a2db92b660a5f41N.exe	32
PID 2252 wrote to memory of 1844	2252	eb4172617d34c01a45390b880499b0c1eef52a466852241e5a2db92b660a5f41N.exe	32
PID 2252 wrote to memory of 1844	2252	eb4172617d34c01a45390b880499b0c1eef52a466852241e5a2db92b660a5f41N.exe	32
PID 2252 wrote to memory of 1844	2252	eb4172617d34c01a45390b880499b0c1eef52a466852241e5a2db92b660a5f41N.exe	32
PID 2252 wrote to memory of 1844	2252	eb4172617d34c01a45390b880499b0c1eef52a466852241e5a2db92b660a5f41N.exe	32
PID 2252 wrote to memory of 1844	2252	eb4172617d34c01a45390b880499b0c1eef52a466852241e5a2db92b660a5f41N.exe	32
PID 2252 wrote to memory of 1844	2252	eb4172617d34c01a45390b880499b0c1eef52a466852241e5a2db92b660a5f41N.exe	32
PID 2252 wrote to memory of 2696	2252	eb4172617d34c01a45390b880499b0c1eef52a466852241e5a2db92b660a5f41N.exe	33
PID 2252 wrote to memory of 2696	2252	eb4172617d34c01a45390b880499b0c1eef52a466852241e5a2db92b660a5f41N.exe	33
PID 2252 wrote to memory of 2696	2252	eb4172617d34c01a45390b880499b0c1eef52a466852241e5a2db92b660a5f41N.exe	33

System policy modification 1 TTPs 1 IoCs

evasion

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	eb4172617d34c01a45390b880499b0c1eef52a466852241e5a2db92b660a5f41N.exe

C:\Users\Admin\AppData\Local\Temp\eb4172617d34c01a45390b880499b0c1eef52a466852241e5a2db92b660a5f41N.exe
"C:\Users\Admin\AppData\Local\Temp\eb4172617d34c01a45390b880499b0c1eef52a466852241e5a2db92b660a5f41N.exe"
1⤵
- UAC bypass
- Checks whether UAC is enabled
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
- System policy modification
PID:2252
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\eb4172617d34c01a45390b880499b0c1eef52a466852241e5a2db92b660a5f41N.exe" -Force
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2764
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe"
  2⤵
  PID:2792
- C:\Program Files (x86)\Internet Explorer\iexplore.exe
  "C:\Program Files (x86)\Internet Explorer\iexplore.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1844
- C:\Windows\system32\WerFault.exe
  C:\Windows\system32\WerFault.exe -u -p 2252 -s 884
  2⤵
  PID:2696

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Privilege Escalation

Abuse Elevation Control Mechanism

T1548

Bypass User Account Control

T1548.002

Defense Evasion

Abuse Elevation Control Mechanism

T1548

Bypass User Account Control

T1548.002

Impair Defenses

T1562

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/1844-27-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2252-0-0x000007FEF5F53000-0x000007FEF5F54000-memory.dmp

Filesize
4KB

Download
memory/2252-1-0x0000000000CB0000-0x0000000000CBA000-memory.dmp

Filesize
40KB

Download
memory/2252-2-0x000007FEF5F50000-0x000007FEF693C000-memory.dmp

Filesize
9.9MB

Download
memory/2252-3-0x000000001ACE0000-0x000000001ADAE000-memory.dmp

Filesize
824KB

Download
memory/2252-29-0x000007FEF5F50000-0x000007FEF693C000-memory.dmp

Filesize
9.9MB

Download
memory/2252-28-0x000007FEF5F53000-0x000007FEF5F54000-memory.dmp

Filesize
4KB

Download
memory/2764-25-0x000000001B410000-0x000000001B6F2000-memory.dmp

Filesize
2.9MB

Download
memory/2764-26-0x0000000001F60000-0x0000000001F68000-memory.dmp

Filesize
32KB

Download
memory/2764-8-0x00000000026F0000-0x0000000002770000-memory.dmp

Filesize
512KB

Download
memory/2792-21-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2792-19-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2792-17-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2792-15-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2792-13-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2792-9-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2792-23-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2792-11-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download