remcos | b564e4c8f28fb518982189d031f651fd033e4d8e7970088c642a3b8c652a9acc

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
18-09-2024 14:16

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General

Target

7eec14e7cec4dc93fbf53e08998b2340.exe
Size

480KB
MD5

e12fd7343aae44cf9ba75d87754a51ad
SHA1

0d4aa92ae887175f42095a578337457875736536
SHA256

ac03de9eb86c038c61523da3b2e8e8d6748f6f45762e44564547f96df37acbe4
SHA512

b9325b2052f886a1b7de67d7819961a53542b7cbaabbd6edd872184230849d46f78be63b68aa9d89117795b10194bb07014fbaf7d31e803687a37cfc73b83b8b
SSDEEP

12288:lPSbGTS0a3ESKPCjIZq8ratAKuv+/PopVuEV2mvV:lPk0a3CCUAAKuIPopVuO

Score

10^/10

remcos remotehost discovery persistence rat

Malware Config

Extracted

Family

remcos

Version

2.7.2 Pro

Botnet

RemoteHost

sandshoe.myfirewall.org:2404

Attributes

audio_folder
MicRecords
audio_path
%AppData%
audio_record_time
5
connect_delay
0
connect_interval
1
copy_file
svchosts.exe
copy_folder
Remcos
delete_file
false
hide_file
false
hide_keylog_file
true
install_flag
true
install_path
%AppData%
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
keylog_path
%AppData%
mouse_option
false
mutex
Remcos-DOPZNX
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
take_screenshot_title
wikipedia;solitaire;

Signatures

Remcos
Remcos is a closed-source remote control and surveillance software.
rat remcos

Checks computer location settings 2 TTPs 2 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-1-5-21-2170637797-568393320-3232933035-1000\Control Panel\International\Geo\Nation	7eec14e7cec4dc93fbf53e08998b2340.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2170637797-568393320-3232933035-1000\Control Panel\International\Geo\Nation	WScript.exe

Executes dropped EXE 2 IoCs

pid	Process
3008	svchosts.exe
2008	svchosts.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2170637797-568393320-3232933035-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Remcos = "\"C:\\Users\\Admin\\AppData\\Roaming\\Remcos\\svchosts.exe\""	7eec14e7cec4dc93fbf53e08998b2340.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2170637797-568393320-3232933035-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Remcos = "\"C:\\Users\\Admin\\AppData\\Roaming\\Remcos\\svchosts.exe\""	svchosts.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 432 set thread context of 2484	432	7eec14e7cec4dc93fbf53e08998b2340.exe	98
PID 3008 set thread context of 2008	3008	svchosts.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 6 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	svchosts.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchosts.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	7eec14e7cec4dc93fbf53e08998b2340.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	7eec14e7cec4dc93fbf53e08998b2340.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	WScript.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2170637797-568393320-3232933035-1000_Classes\Local Settings	7eec14e7cec4dc93fbf53e08998b2340.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
432	7eec14e7cec4dc93fbf53e08998b2340.exe
432	7eec14e7cec4dc93fbf53e08998b2340.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	432	7eec14e7cec4dc93fbf53e08998b2340.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2008	svchosts.exe

Suspicious use of WriteProcessMemory 35 IoCs

description	pid	Process	procid_target
PID 432 wrote to memory of 1808	432	7eec14e7cec4dc93fbf53e08998b2340.exe	97
PID 432 wrote to memory of 1808	432	7eec14e7cec4dc93fbf53e08998b2340.exe	97
PID 432 wrote to memory of 1808	432	7eec14e7cec4dc93fbf53e08998b2340.exe	97
PID 432 wrote to memory of 2484	432	7eec14e7cec4dc93fbf53e08998b2340.exe	98
PID 432 wrote to memory of 2484	432	7eec14e7cec4dc93fbf53e08998b2340.exe	98
PID 432 wrote to memory of 2484	432	7eec14e7cec4dc93fbf53e08998b2340.exe	98
PID 432 wrote to memory of 2484	432	7eec14e7cec4dc93fbf53e08998b2340.exe	98
PID 432 wrote to memory of 2484	432	7eec14e7cec4dc93fbf53e08998b2340.exe	98
PID 432 wrote to memory of 2484	432	7eec14e7cec4dc93fbf53e08998b2340.exe	98
PID 432 wrote to memory of 2484	432	7eec14e7cec4dc93fbf53e08998b2340.exe	98
PID 432 wrote to memory of 2484	432	7eec14e7cec4dc93fbf53e08998b2340.exe	98
PID 432 wrote to memory of 2484	432	7eec14e7cec4dc93fbf53e08998b2340.exe	98
PID 432 wrote to memory of 2484	432	7eec14e7cec4dc93fbf53e08998b2340.exe	98
PID 2484 wrote to memory of 892	2484	7eec14e7cec4dc93fbf53e08998b2340.exe	100
PID 2484 wrote to memory of 892	2484	7eec14e7cec4dc93fbf53e08998b2340.exe	100
PID 2484 wrote to memory of 892	2484	7eec14e7cec4dc93fbf53e08998b2340.exe	100
PID 892 wrote to memory of 1920	892	WScript.exe	101
PID 892 wrote to memory of 1920	892	WScript.exe	101
PID 892 wrote to memory of 1920	892	WScript.exe	101
PID 1920 wrote to memory of 3008	1920	cmd.exe	103
PID 1920 wrote to memory of 3008	1920	cmd.exe	103
PID 1920 wrote to memory of 3008	1920	cmd.exe	103
PID 3008 wrote to memory of 2008	3008	svchosts.exe	105
PID 3008 wrote to memory of 2008	3008	svchosts.exe	105
PID 3008 wrote to memory of 2008	3008	svchosts.exe	105
PID 3008 wrote to memory of 2008	3008	svchosts.exe	105
PID 3008 wrote to memory of 2008	3008	svchosts.exe	105
PID 3008 wrote to memory of 2008	3008	svchosts.exe	105
PID 3008 wrote to memory of 2008	3008	svchosts.exe	105
PID 3008 wrote to memory of 2008	3008	svchosts.exe	105
PID 3008 wrote to memory of 2008	3008	svchosts.exe	105
PID 3008 wrote to memory of 2008	3008	svchosts.exe	105
PID 2008 wrote to memory of 4744	2008	svchosts.exe	106
PID 2008 wrote to memory of 4744	2008	svchosts.exe	106
PID 2008 wrote to memory of 4744	2008	svchosts.exe	106

C:\Users\Admin\AppData\Local\Temp\7eec14e7cec4dc93fbf53e08998b2340.exe
"C:\Users\Admin\AppData\Local\Temp\7eec14e7cec4dc93fbf53e08998b2340.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:432
- C:\Users\Admin\AppData\Local\Temp\7eec14e7cec4dc93fbf53e08998b2340.exe
  "{path}"
  2⤵
  PID:1808
- C:\Users\Admin\AppData\Local\Temp\7eec14e7cec4dc93fbf53e08998b2340.exe
  "{path}"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2484
- - C:\Windows\SysWOW64\WScript.exe
    "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\install.vbs"
    3⤵
    - Checks computer location settings
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:892
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c "C:\Users\Admin\AppData\Roaming\Remcos\svchosts.exe"
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious use of WriteProcessMemory
      PID:1920
    - - C:\Users\Admin\AppData\Roaming\Remcos\svchosts.exe
        
        C:\Users\Admin\AppData\Roaming\Remcos\svchosts.exe
        5⤵
        Executes dropped EXE
        Suspicious use of SetThreadContext
        System Location Discovery: System Language Discovery
        Suspicious use of WriteProcessMemory
        
        PID:3008
      - C:\Users\Admin\AppData\Roaming\Remcos\svchosts.exe
        
        "{path}"
        6⤵
        Executes dropped EXE
        Adds Run key to start application
        System Location Discovery: System Language Discovery
        Suspicious use of SetWindowsHookEx
        Suspicious use of WriteProcessMemory
        
        PID:2008
        
        C:\Windows\SysWOW64\svchost.exe
        
        C:\Windows\SysWOW64\svchost.exe
        7⤵
        
        PID:4744

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=4344,i,1828333185976713750,7918646547767660928,262144 --variations-seed-version --mojo-platform-channel-handle=4088 /prefetch:8
1⤵
PID:1840

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

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\install.vbs

Filesize
422B

MD5
57c7d195a177757bfcf67886fd7c170c

SHA1
64187068dae395acd2bed9dd6c42d10bddebaa98

SHA256
35780c2a4ec8203bb8fce796654f77d441ff9196851ccea72f9c207b22f51382

SHA512
270f1fffa624530ba45c2bd6b55e66b2a07680331f85d9f0d2d2502f9bd2bac83f92fdf968dd05170a9c02d38783fb8bef0b484f28f1c919680ec6ab3c324d7b

Download Submit
C:\Users\Admin\AppData\Roaming\Remcos\logs.dat

Filesize
74B

MD5
28e55d912199a8582b968b1d14399a1a

SHA1
0867808a2df44bea2d02dd5126f3b6b1162e2605

SHA256
1db9eca0a13cc1842aa5e94911ba3b2b50950b9a66dc0e50200dd588b9d58b1e

SHA512
06a836951b0c18deb77c4da7a0428314a3992ca58f175ff41c9003656b29c95bb586dd9cde1d87fc6e750aae86da4f2a789ee23a05ffd95d89c3b41d3b0bea23

Download Submit
C:\Users\Admin\AppData\Roaming\Remcos\svchosts.exe

Filesize
480KB

MD5
e12fd7343aae44cf9ba75d87754a51ad

SHA1
0d4aa92ae887175f42095a578337457875736536

SHA256
ac03de9eb86c038c61523da3b2e8e8d6748f6f45762e44564547f96df37acbe4

SHA512
b9325b2052f886a1b7de67d7819961a53542b7cbaabbd6edd872184230849d46f78be63b68aa9d89117795b10194bb07014fbaf7d31e803687a37cfc73b83b8b

Download Submit
memory/432-10-0x00000000073C0000-0x0000000007438000-memory.dmp

Filesize
480KB

Download
memory/432-3-0x00000000059E0000-0x0000000005A72000-memory.dmp

Filesize
584KB

Download
memory/432-5-0x0000000005AC0000-0x0000000005ACA000-memory.dmp

Filesize
40KB

Download
memory/432-6-0x0000000007050000-0x00000000070EC000-memory.dmp

Filesize
624KB

Download
memory/432-7-0x0000000007040000-0x0000000007048000-memory.dmp

Filesize
32KB

Download
memory/432-8-0x0000000074F9E000-0x0000000074F9F000-memory.dmp

Filesize
4KB

Download
memory/432-9-0x0000000074F90000-0x0000000075740000-memory.dmp

Filesize
7.7MB

Download
memory/432-0-0x0000000074F9E000-0x0000000074F9F000-memory.dmp

Filesize
4KB

Download
memory/432-1-0x0000000000F90000-0x000000000100E000-memory.dmp

Filesize
504KB

Download
memory/432-2-0x0000000006070000-0x0000000006614000-memory.dmp

Filesize
5.6MB

Download
memory/432-4-0x0000000074F90000-0x0000000075740000-memory.dmp

Filesize
7.7MB

Download
memory/432-18-0x0000000074F90000-0x0000000075740000-memory.dmp

Filesize
7.7MB

Download
memory/2008-28-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2008-32-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2008-29-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2008-36-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2484-21-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2484-15-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2484-14-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2484-11-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download