remcos | 3fc3e4fb5fe0f470d30dd3fe84267348263f425e02bc757a0b35f4fb0bb4806a

Analysis

max time kernel
118s
max time network
100s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
26-11-2024 00:11

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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
64	powershell.exe
3948	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-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation	3fc3e4fb5fe0f470d30dd3fe84267348263f425e02bc757a0b35f4fb0bb4806a.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2720 set thread context of 2844	2720	3fc3e4fb5fe0f470d30dd3fe84267348263f425e02bc757a0b35f4fb0bb4806a.exe	105

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	3fc3e4fb5fe0f470d30dd3fe84267348263f425e02bc757a0b35f4fb0bb4806a.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.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	3fc3e4fb5fe0f470d30dd3fe84267348263f425e02bc757a0b35f4fb0bb4806a.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
3020	schtasks.exe

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
2720	3fc3e4fb5fe0f470d30dd3fe84267348263f425e02bc757a0b35f4fb0bb4806a.exe
2720	3fc3e4fb5fe0f470d30dd3fe84267348263f425e02bc757a0b35f4fb0bb4806a.exe
2720	3fc3e4fb5fe0f470d30dd3fe84267348263f425e02bc757a0b35f4fb0bb4806a.exe
2720	3fc3e4fb5fe0f470d30dd3fe84267348263f425e02bc757a0b35f4fb0bb4806a.exe
2720	3fc3e4fb5fe0f470d30dd3fe84267348263f425e02bc757a0b35f4fb0bb4806a.exe
2720	3fc3e4fb5fe0f470d30dd3fe84267348263f425e02bc757a0b35f4fb0bb4806a.exe
64	powershell.exe
3948	powershell.exe
2720	3fc3e4fb5fe0f470d30dd3fe84267348263f425e02bc757a0b35f4fb0bb4806a.exe
64	powershell.exe
3948	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2720	3fc3e4fb5fe0f470d30dd3fe84267348263f425e02bc757a0b35f4fb0bb4806a.exe
Token: SeDebugPrivilege	64	powershell.exe
Token: SeDebugPrivilege	3948	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2844	3fc3e4fb5fe0f470d30dd3fe84267348263f425e02bc757a0b35f4fb0bb4806a.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 2720 wrote to memory of 64	2720	3fc3e4fb5fe0f470d30dd3fe84267348263f425e02bc757a0b35f4fb0bb4806a.exe	99
PID 2720 wrote to memory of 64	2720	3fc3e4fb5fe0f470d30dd3fe84267348263f425e02bc757a0b35f4fb0bb4806a.exe	99
PID 2720 wrote to memory of 64	2720	3fc3e4fb5fe0f470d30dd3fe84267348263f425e02bc757a0b35f4fb0bb4806a.exe	99
PID 2720 wrote to memory of 3948	2720	3fc3e4fb5fe0f470d30dd3fe84267348263f425e02bc757a0b35f4fb0bb4806a.exe	101
PID 2720 wrote to memory of 3948	2720	3fc3e4fb5fe0f470d30dd3fe84267348263f425e02bc757a0b35f4fb0bb4806a.exe	101
PID 2720 wrote to memory of 3948	2720	3fc3e4fb5fe0f470d30dd3fe84267348263f425e02bc757a0b35f4fb0bb4806a.exe	101
PID 2720 wrote to memory of 3020	2720	3fc3e4fb5fe0f470d30dd3fe84267348263f425e02bc757a0b35f4fb0bb4806a.exe	103
PID 2720 wrote to memory of 3020	2720	3fc3e4fb5fe0f470d30dd3fe84267348263f425e02bc757a0b35f4fb0bb4806a.exe	103
PID 2720 wrote to memory of 3020	2720	3fc3e4fb5fe0f470d30dd3fe84267348263f425e02bc757a0b35f4fb0bb4806a.exe	103
PID 2720 wrote to memory of 2844	2720	3fc3e4fb5fe0f470d30dd3fe84267348263f425e02bc757a0b35f4fb0bb4806a.exe	105
PID 2720 wrote to memory of 2844	2720	3fc3e4fb5fe0f470d30dd3fe84267348263f425e02bc757a0b35f4fb0bb4806a.exe	105
PID 2720 wrote to memory of 2844	2720	3fc3e4fb5fe0f470d30dd3fe84267348263f425e02bc757a0b35f4fb0bb4806a.exe	105
PID 2720 wrote to memory of 2844	2720	3fc3e4fb5fe0f470d30dd3fe84267348263f425e02bc757a0b35f4fb0bb4806a.exe	105
PID 2720 wrote to memory of 2844	2720	3fc3e4fb5fe0f470d30dd3fe84267348263f425e02bc757a0b35f4fb0bb4806a.exe	105
PID 2720 wrote to memory of 2844	2720	3fc3e4fb5fe0f470d30dd3fe84267348263f425e02bc757a0b35f4fb0bb4806a.exe	105
PID 2720 wrote to memory of 2844	2720	3fc3e4fb5fe0f470d30dd3fe84267348263f425e02bc757a0b35f4fb0bb4806a.exe	105
PID 2720 wrote to memory of 2844	2720	3fc3e4fb5fe0f470d30dd3fe84267348263f425e02bc757a0b35f4fb0bb4806a.exe	105
PID 2720 wrote to memory of 2844	2720	3fc3e4fb5fe0f470d30dd3fe84267348263f425e02bc757a0b35f4fb0bb4806a.exe	105
PID 2720 wrote to memory of 2844	2720	3fc3e4fb5fe0f470d30dd3fe84267348263f425e02bc757a0b35f4fb0bb4806a.exe	105
PID 2720 wrote to memory of 2844	2720	3fc3e4fb5fe0f470d30dd3fe84267348263f425e02bc757a0b35f4fb0bb4806a.exe	105
PID 2720 wrote to memory of 2844	2720	3fc3e4fb5fe0f470d30dd3fe84267348263f425e02bc757a0b35f4fb0bb4806a.exe	105

C:\Users\Admin\AppData\Local\Temp\3fc3e4fb5fe0f470d30dd3fe84267348263f425e02bc757a0b35f4fb0bb4806a.exe
"C:\Users\Admin\AppData\Local\Temp\3fc3e4fb5fe0f470d30dd3fe84267348263f425e02bc757a0b35f4fb0bb4806a.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2720
- 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:64
- 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:3948
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\xASiLfzXONGIW" /XML "C:\Users\Admin\AppData\Local\Temp\tmp5128.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:3020
- 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:2844

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:\ProgramData\ios\logs.dat

Filesize
144B

MD5
eb5fd64f93686451fbe32317e6262481

SHA1
4aa5b5ab17dfe9d02898f4a360b150ce7c2f2db4

SHA256
a908ff497abe91c0cbb1e2cf877ae05f8cdde32ca2fa37dcc9313aa441127df0

SHA512
be220445c797c405fc80b425ebd7d2be3c809377e7d49a1e0b0423c3379397bcd69fa237fb5304f79cd40bc35620bf6389e6a41432ee1948ccfb755a12d4adbf

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
18KB

MD5
3036a69669c6da8c6126230f0424ba3c

SHA1
8468287a66fd36839689a3d0167e4e5d82df0daf

SHA256
a65d220b63c81af19f22b3f2211ecaa8c32362bdb16007ba67161e7e5fc25627

SHA512
2e49d689cca0556b0eae654816318c6d781fc50a1f1f0ad2b8200da4566dd5b569d2dd32966783deb6ddd52dae7f976b8559314f830eec9dd4ce968c32a9c933

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_o0t3b120.5fw.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp5128.tmp

Filesize
1KB

MD5
a4bbb1310887bb1538c2c292bcff6d1b

SHA1
dbe9c2a25e4fe698d643613501c7c4d7e80640c3

SHA256
3d43b59959585a70ef3e3fec5a42aa979c7a1ce86f724ff22366ed74c2a3764a

SHA512
b28be66e266d383fd5fd3ed449c0a0c2f020ae39a171b9ecd1a69ec27dd56d3e1959e948ed3f2c02cd5c7eec82cdbb08bc0c0521313c8c1c8052257b5e87a61a

Download Submit
memory/64-21-0x0000000005DE0000-0x0000000005E46000-memory.dmp

Filesize
408KB

Download
memory/64-20-0x0000000005D40000-0x0000000005D62000-memory.dmp

Filesize
136KB

Download
memory/64-99-0x00000000748C0000-0x0000000075070000-memory.dmp

Filesize
7.7MB

Download
memory/64-93-0x0000000007B10000-0x0000000007B18000-memory.dmp

Filesize
32KB

Download
memory/64-88-0x0000000007A70000-0x0000000007B06000-memory.dmp

Filesize
600KB

Download
memory/64-87-0x0000000007860000-0x000000000786A000-memory.dmp

Filesize
40KB

Download
memory/64-86-0x00000000077F0000-0x000000000780A000-memory.dmp

Filesize
104KB

Download
memory/64-15-0x0000000004F30000-0x0000000004F66000-memory.dmp

Filesize
216KB

Download
memory/64-17-0x00000000055A0000-0x0000000005BC8000-memory.dmp

Filesize
6.2MB

Download
memory/64-16-0x00000000748C0000-0x0000000075070000-memory.dmp

Filesize
7.7MB

Download
memory/64-18-0x00000000748C0000-0x0000000075070000-memory.dmp

Filesize
7.7MB

Download
memory/64-83-0x0000000006AA0000-0x0000000006ABE000-memory.dmp

Filesize
120KB

Download
memory/64-62-0x0000000007490000-0x00000000074C2000-memory.dmp

Filesize
200KB

Download
memory/64-22-0x0000000005E50000-0x0000000005EB6000-memory.dmp

Filesize
408KB

Download
memory/64-63-0x0000000073390000-0x00000000733DC000-memory.dmp

Filesize
304KB

Download
memory/64-84-0x00000000074D0000-0x0000000007573000-memory.dmp

Filesize
652KB

Download
memory/64-35-0x00000000748C0000-0x0000000075070000-memory.dmp

Filesize
7.7MB

Download
memory/64-24-0x0000000005EC0000-0x0000000006214000-memory.dmp

Filesize
3.3MB

Download
memory/2720-3-0x0000000005610000-0x00000000056A2000-memory.dmp

Filesize
584KB

Download
memory/2720-7-0x00000000748CE000-0x00000000748CF000-memory.dmp

Filesize
4KB

Download
memory/2720-1-0x0000000000AD0000-0x0000000000BB6000-memory.dmp

Filesize
920KB

Download
memory/2720-53-0x00000000748C0000-0x0000000075070000-memory.dmp

Filesize
7.7MB

Download
memory/2720-6-0x00000000748C0000-0x0000000075070000-memory.dmp

Filesize
7.7MB

Download
memory/2720-2-0x0000000005B20000-0x00000000060C4000-memory.dmp

Filesize
5.6MB

Download
memory/2720-8-0x0000000005980000-0x0000000005992000-memory.dmp

Filesize
72KB

Download
memory/2720-0-0x00000000748CE000-0x00000000748CF000-memory.dmp

Filesize
4KB

Download
memory/2720-9-0x00000000748C0000-0x0000000075070000-memory.dmp

Filesize
7.7MB

Download
memory/2720-10-0x0000000007D00000-0x0000000007DC0000-memory.dmp

Filesize
768KB

Download
memory/2720-5-0x00000000058B0000-0x000000000594C000-memory.dmp

Filesize
624KB

Download
memory/2720-4-0x00000000055D0000-0x00000000055DA000-memory.dmp

Filesize
40KB

Download
memory/2844-46-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2844-59-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2844-114-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2844-115-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2844-107-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2844-48-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2844-57-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2844-58-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2844-54-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2844-106-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2844-47-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2844-51-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2844-61-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3948-25-0x00000000748C0000-0x0000000075070000-memory.dmp

Filesize
7.7MB

Download
memory/3948-55-0x0000000005F80000-0x0000000005F9E000-memory.dmp

Filesize
120KB

Download
memory/3948-92-0x00000000075E0000-0x00000000075FA000-memory.dmp

Filesize
104KB

Download
memory/3948-45-0x00000000748C0000-0x0000000075070000-memory.dmp

Filesize
7.7MB

Download
memory/3948-85-0x00000000078F0000-0x0000000007F6A000-memory.dmp

Filesize
6.5MB

Download
memory/3948-91-0x00000000074E0000-0x00000000074F4000-memory.dmp

Filesize
80KB

Download
memory/3948-100-0x00000000748C0000-0x0000000075070000-memory.dmp

Filesize
7.7MB

Download
memory/3948-23-0x00000000748C0000-0x0000000075070000-memory.dmp

Filesize
7.7MB

Download
memory/3948-90-0x00000000074D0000-0x00000000074DE000-memory.dmp

Filesize
56KB

Download
memory/3948-56-0x0000000006010000-0x000000000605C000-memory.dmp

Filesize
304KB

Download
memory/3948-66-0x0000000073390000-0x00000000733DC000-memory.dmp

Filesize
304KB

Download
memory/3948-89-0x00000000074A0000-0x00000000074B1000-memory.dmp

Filesize
68KB

Download