remcos | ec8b5d134fb3669c59733a303ef5a03bb6cc5a02602bce545d4fedda93ea4962

Analysis

max time kernel
149s
max time network
143s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
24-09-2024 01:54

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General

Target

BL-TLN0124796CMACGM.scr
Size

915KB
MD5

02d513fa3a4c04f1ffce97c25caccdff
SHA1

853948f7ff1d69a293c4f4617185c24b9859e6dd
SHA256

d00a443bf00b909b32fbd9894462283fca5788e28b96a9e729f43fc4f2ca585a
SHA512

9a9b925e7d5acec5216ecb64f7352a8a27598106452984f08155f2bef640fe1ad93ff3a7869cacfaec2514641740c41fcc0e7e4f0172eaa7072c1c9c05087ab3
SSDEEP

24576:SgW2J4Sl29MaW6EEJJQEtTShtxMwwW7yUVzmoeli:SgjJYSoxtuDxZlyUVzmo

Score

10^/10

remcos generalwire-slaves discovery execution rat

Malware Config

Extracted

Family

remcos

Botnet

GeneralWire-Slaves

milliondollar23.duckdns.org:3984

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-TWU43D
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 2 IoCs

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

execution

PowerShell

T1059.001

pid	Process
412	powershell.exe
544	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-1-5-21-2412658365-3084825385-3340777666-1000\Control Panel\International\Geo\Nation	BL-TLN0124796CMACGM.scr

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1508 set thread context of 644	1508	BL-TLN0124796CMACGM.scr	95

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	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	BL-TLN0124796CMACGM.scr
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	BL-TLN0124796CMACGM.scr
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.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
4856	schtasks.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
1508	BL-TLN0124796CMACGM.scr
544	powershell.exe
412	powershell.exe
1508	BL-TLN0124796CMACGM.scr
412	powershell.exe
544	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1508	BL-TLN0124796CMACGM.scr
Token: SeDebugPrivilege	412	powershell.exe
Token: SeDebugPrivilege	544	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
644	BL-TLN0124796CMACGM.scr

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 1508 wrote to memory of 412	1508	BL-TLN0124796CMACGM.scr	89
PID 1508 wrote to memory of 412	1508	BL-TLN0124796CMACGM.scr	89
PID 1508 wrote to memory of 412	1508	BL-TLN0124796CMACGM.scr	89
PID 1508 wrote to memory of 544	1508	BL-TLN0124796CMACGM.scr	91
PID 1508 wrote to memory of 544	1508	BL-TLN0124796CMACGM.scr	91
PID 1508 wrote to memory of 544	1508	BL-TLN0124796CMACGM.scr	91
PID 1508 wrote to memory of 4856	1508	BL-TLN0124796CMACGM.scr	93
PID 1508 wrote to memory of 4856	1508	BL-TLN0124796CMACGM.scr	93
PID 1508 wrote to memory of 4856	1508	BL-TLN0124796CMACGM.scr	93
PID 1508 wrote to memory of 644	1508	BL-TLN0124796CMACGM.scr	95
PID 1508 wrote to memory of 644	1508	BL-TLN0124796CMACGM.scr	95
PID 1508 wrote to memory of 644	1508	BL-TLN0124796CMACGM.scr	95
PID 1508 wrote to memory of 644	1508	BL-TLN0124796CMACGM.scr	95
PID 1508 wrote to memory of 644	1508	BL-TLN0124796CMACGM.scr	95
PID 1508 wrote to memory of 644	1508	BL-TLN0124796CMACGM.scr	95
PID 1508 wrote to memory of 644	1508	BL-TLN0124796CMACGM.scr	95
PID 1508 wrote to memory of 644	1508	BL-TLN0124796CMACGM.scr	95
PID 1508 wrote to memory of 644	1508	BL-TLN0124796CMACGM.scr	95
PID 1508 wrote to memory of 644	1508	BL-TLN0124796CMACGM.scr	95
PID 1508 wrote to memory of 644	1508	BL-TLN0124796CMACGM.scr	95
PID 1508 wrote to memory of 644	1508	BL-TLN0124796CMACGM.scr	95

C:\Users\Admin\AppData\Local\Temp\BL-TLN0124796CMACGM.scr
"C:\Users\Admin\AppData\Local\Temp\BL-TLN0124796CMACGM.scr" /S
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:1508
- 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\BL-TLN0124796CMACGM.scr"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:412
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\LdtceRaylJq.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:544
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\LdtceRaylJq" /XML "C:\Users\Admin\AppData\Local\Temp\tmpEBA8.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:4856
- C:\Users\Admin\AppData\Local\Temp\BL-TLN0124796CMACGM.scr
  "C:\Users\Admin\AppData\Local\Temp\BL-TLN0124796CMACGM.scr"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:644

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\remcos\logs.dat

Filesize
144B

MD5
51c7f3ac2ff7a3a5c4751b914a8922b9

SHA1
70f816c3fb39a2e714f6755675edcf1e01507629

SHA256
6540dd9f8bfcd377d69538423cf8646ff2ed5539ba0c5855a9a37e9b9e35d4e1

SHA512
4c5c5320ab45bb5660a5e1b24f2519be6fd49d1d976a6f191173b6dadac464b445f166a75416b978226e605555f8cbe2c1849ca4ac87dcea5ae871a24447bc62

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log

Filesize
2KB

MD5
968cb9309758126772781b83adb8a28f

SHA1
8da30e71accf186b2ba11da1797cf67f8f78b47c

SHA256
92099c10776bb7e3f2a8d1b82d4d40d0c4627e4f1bf754a6e58dfd2c2e97042a

SHA512
4bd50732f8af4d688d95999bddfd296115d7033ddc38f86c9fb1f47fde202bffa27e9088bebcaa3064ca946af2f5c1ca6cbde49d0907f0005c7ab42874515dd3

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

Filesize
18KB

MD5
c629922e2a0e1d38523e0cb4c2bed69c

SHA1
63b6d99c86a59bd72ce70fee0b0b0117dfc56a43

SHA256
98685dc3654b82272b09c77440a85928ccb921d756635e76db7aa560af72830b

SHA512
87484986b6b6f89537dfc6751a04b6f8160ec23d6fdbbeb25f29b7a87890a59e55b576d27853583429c2b4e9b42f2e49618de775f4842d9cae4484c83217dc00

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_k33xnx5i.d2m.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpEBA8.tmp

Filesize
1KB

MD5
2edc3675ab33baccff940689964fe842

SHA1
43a54cd57cfde56051999612238ada6c3350bce7

SHA256
fbd1bf74da3767c1c6c761f63e756b1ab0175efbab08933d605a408f968ee0ab

SHA512
50df8fbfbe465e3a6d0c84ccba1210e1fe6a45522a9b5f3775c2dc4d219c56905cb5f7a18185a6fc6b11bded134d9f40599dcc365557be83397006bc385af070

Download Submit
memory/412-17-0x0000000005870000-0x0000000005E98000-memory.dmp

Filesize
6.2MB

Download
memory/412-71-0x0000000007930000-0x000000000794E000-memory.dmp

Filesize
120KB

Download
memory/412-86-0x0000000007D10000-0x0000000007DA6000-memory.dmp

Filesize
600KB

Download
memory/412-85-0x0000000007B00000-0x0000000007B0A000-memory.dmp

Filesize
40KB

Download
memory/412-84-0x0000000007A90000-0x0000000007AAA000-memory.dmp

Filesize
104KB

Download
memory/412-83-0x00000000080D0000-0x000000000874A000-memory.dmp

Filesize
6.5MB

Download
memory/412-15-0x0000000002E40000-0x0000000002E76000-memory.dmp

Filesize
216KB

Download
memory/412-56-0x0000000006D30000-0x0000000006D7C000-memory.dmp

Filesize
304KB

Download
memory/412-16-0x0000000074F70000-0x0000000075720000-memory.dmp

Filesize
7.7MB

Download
memory/412-18-0x0000000074F70000-0x0000000075720000-memory.dmp

Filesize
7.7MB

Download
memory/412-72-0x0000000007950000-0x00000000079F3000-memory.dmp

Filesize
652KB

Download
memory/412-92-0x0000000007DD0000-0x0000000007DEA000-memory.dmp

Filesize
104KB

Download
memory/412-93-0x0000000007DB0000-0x0000000007DB8000-memory.dmp

Filesize
32KB

Download
memory/412-60-0x0000000006C90000-0x0000000006CC2000-memory.dmp

Filesize
200KB

Download
memory/412-61-0x0000000075800000-0x000000007584C000-memory.dmp

Filesize
304KB

Download
memory/412-22-0x0000000005790000-0x00000000057B2000-memory.dmp

Filesize
136KB

Download
memory/412-99-0x0000000074F70000-0x0000000075720000-memory.dmp

Filesize
7.7MB

Download
memory/412-23-0x0000000005EA0000-0x0000000005F06000-memory.dmp

Filesize
408KB

Download
memory/412-24-0x0000000005F10000-0x0000000005F76000-memory.dmp

Filesize
408KB

Download
memory/412-28-0x0000000006100000-0x0000000006454000-memory.dmp

Filesize
3.3MB

Download
memory/412-25-0x0000000074F70000-0x0000000075720000-memory.dmp

Filesize
7.7MB

Download
memory/412-55-0x0000000006740000-0x000000000675E000-memory.dmp

Filesize
120KB

Download
memory/544-19-0x0000000074F70000-0x0000000075720000-memory.dmp

Filesize
7.7MB

Download
memory/544-33-0x0000000074F70000-0x0000000075720000-memory.dmp

Filesize
7.7MB

Download
memory/544-100-0x0000000074F70000-0x0000000075720000-memory.dmp

Filesize
7.7MB

Download
memory/544-91-0x0000000007AD0000-0x0000000007AE4000-memory.dmp

Filesize
80KB

Download
memory/544-90-0x0000000007AC0000-0x0000000007ACE000-memory.dmp

Filesize
56KB

Download
memory/544-87-0x0000000007A90000-0x0000000007AA1000-memory.dmp

Filesize
68KB

Download
memory/544-73-0x0000000075800000-0x000000007584C000-memory.dmp

Filesize
304KB

Download
memory/544-20-0x0000000074F70000-0x0000000075720000-memory.dmp

Filesize
7.7MB

Download
memory/644-89-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/644-119-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/644-59-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/644-57-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/644-135-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/644-58-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/644-134-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/644-127-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/644-126-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/644-27-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/644-29-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/644-26-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/644-118-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/644-54-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/644-111-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/644-32-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/644-110-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/644-103-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/644-102-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1508-5-0x0000000005930000-0x000000000593A000-memory.dmp

Filesize
40KB

Download
memory/1508-2-0x0000000005DF0000-0x0000000006394000-memory.dmp

Filesize
5.6MB

Download
memory/1508-3-0x0000000005840000-0x00000000058D2000-memory.dmp

Filesize
584KB

Download
memory/1508-1-0x0000000000D00000-0x0000000000DEA000-memory.dmp

Filesize
936KB

Download
memory/1508-4-0x0000000074F70000-0x0000000075720000-memory.dmp

Filesize
7.7MB

Download
memory/1508-6-0x0000000005A60000-0x0000000005A72000-memory.dmp

Filesize
72KB

Download
memory/1508-44-0x0000000074F70000-0x0000000075720000-memory.dmp

Filesize
7.7MB

Download
memory/1508-7-0x0000000074F7E000-0x0000000074F7F000-memory.dmp

Filesize
4KB

Download
memory/1508-8-0x0000000074F70000-0x0000000075720000-memory.dmp

Filesize
7.7MB

Download
memory/1508-9-0x0000000007550000-0x0000000007610000-memory.dmp

Filesize
768KB

Download
memory/1508-10-0x0000000009C70000-0x0000000009D0C000-memory.dmp

Filesize
624KB

Download
memory/1508-0-0x0000000074F7E000-0x0000000074F7F000-memory.dmp

Filesize
4KB

Download