remcos | 3fc3e4fb5fe0f470d30dd3fe84267348263f425e02bc757a0b35f4fb0bb4806a

Analysis

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

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
27-12-2024 21:29

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General

Target

3fc3e4fb5fe0f470d30dd3fe84267348263f425e02bc757a0b35f4fb0bb4806a.exe
Size

893KB
MD5

205f6af195f367a1f6f0d3e591c7d226
SHA1

883e78287a64bac5435beada7b5f283c11df9a8f
SHA256

3fc3e4fb5fe0f470d30dd3fe84267348263f425e02bc757a0b35f4fb0bb4806a
SHA512

defce7df2c8b0fcfc6cd93bad5736e0262c616e4a75647619382b064604ea3fc785832ea40c0e84006817110d2fca6f4ae461011ad70699231c4a614c6fc87c2
SSDEEP

24576:WNo7gN9rqhq/5UqutCi1BDUTskujqA5pd6p3MFHdIvYV/:QL2hq/6q1i1h4v3A5pdSOWvY1

Score

10^/10

remcos cee discovery execution rat

Malware Config

Extracted

Family

remcos

Botnet

cee

cee.work.gd:2531

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
ios
mouse_option
false
mutex
gig-1IH5DX
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
startup_value
sos
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 2 IoCs

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

execution

PowerShell

T1059.001

pid	Process
2624	powershell.exe
2640	powershell.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1088 set thread context of 1716	1088	3fc3e4fb5fe0f470d30dd3fe84267348263f425e02bc757a0b35f4fb0bb4806a.exe	36

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 5 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	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	3fc3e4fb5fe0f470d30dd3fe84267348263f425e02bc757a0b35f4fb0bb4806a.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	3fc3e4fb5fe0f470d30dd3fe84267348263f425e02bc757a0b35f4fb0bb4806a.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.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
2604	schtasks.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
1088	3fc3e4fb5fe0f470d30dd3fe84267348263f425e02bc757a0b35f4fb0bb4806a.exe
1088	3fc3e4fb5fe0f470d30dd3fe84267348263f425e02bc757a0b35f4fb0bb4806a.exe
1088	3fc3e4fb5fe0f470d30dd3fe84267348263f425e02bc757a0b35f4fb0bb4806a.exe
1088	3fc3e4fb5fe0f470d30dd3fe84267348263f425e02bc757a0b35f4fb0bb4806a.exe
1088	3fc3e4fb5fe0f470d30dd3fe84267348263f425e02bc757a0b35f4fb0bb4806a.exe
1088	3fc3e4fb5fe0f470d30dd3fe84267348263f425e02bc757a0b35f4fb0bb4806a.exe
2640	powershell.exe
2624	powershell.exe
1088	3fc3e4fb5fe0f470d30dd3fe84267348263f425e02bc757a0b35f4fb0bb4806a.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1088	3fc3e4fb5fe0f470d30dd3fe84267348263f425e02bc757a0b35f4fb0bb4806a.exe
Token: SeDebugPrivilege	2640	powershell.exe
Token: SeDebugPrivilege	2624	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1716	3fc3e4fb5fe0f470d30dd3fe84267348263f425e02bc757a0b35f4fb0bb4806a.exe

Suspicious use of WriteProcessMemory 25 IoCs

description	pid	Process	procid_target
PID 1088 wrote to memory of 2624	1088	3fc3e4fb5fe0f470d30dd3fe84267348263f425e02bc757a0b35f4fb0bb4806a.exe	30
PID 1088 wrote to memory of 2624	1088	3fc3e4fb5fe0f470d30dd3fe84267348263f425e02bc757a0b35f4fb0bb4806a.exe	30
PID 1088 wrote to memory of 2624	1088	3fc3e4fb5fe0f470d30dd3fe84267348263f425e02bc757a0b35f4fb0bb4806a.exe	30
PID 1088 wrote to memory of 2624	1088	3fc3e4fb5fe0f470d30dd3fe84267348263f425e02bc757a0b35f4fb0bb4806a.exe	30
PID 1088 wrote to memory of 2640	1088	3fc3e4fb5fe0f470d30dd3fe84267348263f425e02bc757a0b35f4fb0bb4806a.exe	32
PID 1088 wrote to memory of 2640	1088	3fc3e4fb5fe0f470d30dd3fe84267348263f425e02bc757a0b35f4fb0bb4806a.exe	32
PID 1088 wrote to memory of 2640	1088	3fc3e4fb5fe0f470d30dd3fe84267348263f425e02bc757a0b35f4fb0bb4806a.exe	32
PID 1088 wrote to memory of 2640	1088	3fc3e4fb5fe0f470d30dd3fe84267348263f425e02bc757a0b35f4fb0bb4806a.exe	32
PID 1088 wrote to memory of 2604	1088	3fc3e4fb5fe0f470d30dd3fe84267348263f425e02bc757a0b35f4fb0bb4806a.exe	34
PID 1088 wrote to memory of 2604	1088	3fc3e4fb5fe0f470d30dd3fe84267348263f425e02bc757a0b35f4fb0bb4806a.exe	34
PID 1088 wrote to memory of 2604	1088	3fc3e4fb5fe0f470d30dd3fe84267348263f425e02bc757a0b35f4fb0bb4806a.exe	34
PID 1088 wrote to memory of 2604	1088	3fc3e4fb5fe0f470d30dd3fe84267348263f425e02bc757a0b35f4fb0bb4806a.exe	34
PID 1088 wrote to memory of 1716	1088	3fc3e4fb5fe0f470d30dd3fe84267348263f425e02bc757a0b35f4fb0bb4806a.exe	36
PID 1088 wrote to memory of 1716	1088	3fc3e4fb5fe0f470d30dd3fe84267348263f425e02bc757a0b35f4fb0bb4806a.exe	36
PID 1088 wrote to memory of 1716	1088	3fc3e4fb5fe0f470d30dd3fe84267348263f425e02bc757a0b35f4fb0bb4806a.exe	36
PID 1088 wrote to memory of 1716	1088	3fc3e4fb5fe0f470d30dd3fe84267348263f425e02bc757a0b35f4fb0bb4806a.exe	36
PID 1088 wrote to memory of 1716	1088	3fc3e4fb5fe0f470d30dd3fe84267348263f425e02bc757a0b35f4fb0bb4806a.exe	36
PID 1088 wrote to memory of 1716	1088	3fc3e4fb5fe0f470d30dd3fe84267348263f425e02bc757a0b35f4fb0bb4806a.exe	36
PID 1088 wrote to memory of 1716	1088	3fc3e4fb5fe0f470d30dd3fe84267348263f425e02bc757a0b35f4fb0bb4806a.exe	36
PID 1088 wrote to memory of 1716	1088	3fc3e4fb5fe0f470d30dd3fe84267348263f425e02bc757a0b35f4fb0bb4806a.exe	36
PID 1088 wrote to memory of 1716	1088	3fc3e4fb5fe0f470d30dd3fe84267348263f425e02bc757a0b35f4fb0bb4806a.exe	36
PID 1088 wrote to memory of 1716	1088	3fc3e4fb5fe0f470d30dd3fe84267348263f425e02bc757a0b35f4fb0bb4806a.exe	36
PID 1088 wrote to memory of 1716	1088	3fc3e4fb5fe0f470d30dd3fe84267348263f425e02bc757a0b35f4fb0bb4806a.exe	36
PID 1088 wrote to memory of 1716	1088	3fc3e4fb5fe0f470d30dd3fe84267348263f425e02bc757a0b35f4fb0bb4806a.exe	36
PID 1088 wrote to memory of 1716	1088	3fc3e4fb5fe0f470d30dd3fe84267348263f425e02bc757a0b35f4fb0bb4806a.exe	36

C:\Users\Admin\AppData\Local\Temp\3fc3e4fb5fe0f470d30dd3fe84267348263f425e02bc757a0b35f4fb0bb4806a.exe
"C:\Users\Admin\AppData\Local\Temp\3fc3e4fb5fe0f470d30dd3fe84267348263f425e02bc757a0b35f4fb0bb4806a.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1088
- 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\3fc3e4fb5fe0f470d30dd3fe84267348263f425e02bc757a0b35f4fb0bb4806a.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2624
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\xASiLfzXONGIW.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2640
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\xASiLfzXONGIW" /XML "C:\Users\Admin\AppData\Local\Temp\tmp9FC8.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2604
- C:\Users\Admin\AppData\Local\Temp\3fc3e4fb5fe0f470d30dd3fe84267348263f425e02bc757a0b35f4fb0bb4806a.exe
  "C:\Users\Admin\AppData\Local\Temp\3fc3e4fb5fe0f470d30dd3fe84267348263f425e02bc757a0b35f4fb0bb4806a.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:1716

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

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\ios\logs.dat

Filesize
144B

MD5
7079bd9ef98115dd41f932f5e01690e3

SHA1
d6403f70556b21f334934dd4b3144c7dce8f5489

SHA256
6c91aa335dfab63538d747cf2a76db408034a3fd40bd98f2bfab9f2e2f8d071e

SHA512
ce8ec29d69b46f48671e71cfbfac70625c861a3810a8fa726f6fa709ce1e646d44125e1e9997f2ba9fdfa5d35b088db4000a22f9ddd59045f793cfc663f474cc

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp9FC8.tmp

Filesize
1KB

MD5
8da220ceafc0f0f8820b838009deb03f

SHA1
4417674d5ddf089b618a5c075bcc15b37f8c4fdc

SHA256
0873ee37ac44f24fba10e117fec095eddd2d67a3dd032ab2587c03affbbb51fd

SHA512
d39d06924139f296faaaa1395558c5bcbcaa61e77997b59d74ed903c9db26fecef0167eae66109e717698b3b85c44f910fe39dedab0968e06bd66672539b5962

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms

Filesize
7KB

MD5
d80b7d14a3d69bf761f4a489a48378fc

SHA1
782f5dd026c1601acfc262edf0543b19ecaae19c

SHA256
d0f38c223f37600119e73056549ab98b91e1d7421bf3a40ddf063dbc78b386be

SHA512
a6a681ce163935c356571a6c12aa6f78b2bf1ca0708afc8a3b2843054d3cd58415f386f2dac2fcf524119e8cd0a682682bb5bc44ec377f0c0b952751ddd9e0e7

Download Submit
memory/1088-0-0x00000000742BE000-0x00000000742BF000-memory.dmp

Filesize
4KB

Download
memory/1088-1-0x0000000001070000-0x0000000001156000-memory.dmp

Filesize
920KB

Download
memory/1088-2-0x00000000742B0000-0x000000007499E000-memory.dmp

Filesize
6.9MB

Download
memory/1088-3-0x00000000001E0000-0x00000000001F2000-memory.dmp

Filesize
72KB

Download
memory/1088-4-0x00000000742B0000-0x000000007499E000-memory.dmp

Filesize
6.9MB

Download
memory/1088-5-0x0000000005DE0000-0x0000000005EA0000-memory.dmp

Filesize
768KB

Download
memory/1088-42-0x00000000742B0000-0x000000007499E000-memory.dmp

Filesize
6.9MB

Download
memory/1716-41-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1716-40-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1716-37-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1716-36-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1716-35-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1716-34-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1716-32-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1716-30-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1716-28-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1716-26-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1716-24-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1716-22-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1716-20-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1716-18-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1716-43-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1716-44-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1716-45-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1716-46-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1716-48-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1716-49-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1716-50-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1716-51-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1716-53-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1716-54-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1716-55-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1716-56-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1716-57-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1716-59-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1716-60-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1716-61-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1716-62-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1716-64-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1716-65-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1716-66-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1716-67-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1716-68-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1716-70-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1716-71-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1716-72-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1716-73-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1716-75-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1716-76-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1716-77-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1716-78-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1716-79-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1716-81-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1716-82-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1716-83-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1716-84-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1716-86-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1716-87-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1716-88-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1716-89-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1716-90-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download