remcos | ec8b5d134fb3669c59733a303ef5a03bb6cc5a02602bce545d4fedda93ea4962

Analysis

max time kernel
150s
max time network
147s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
23-09-2024 14:13

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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
4628	powershell.exe
3516	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-1-5-21-2392887640-1187051047-2909758433-1000\Control Panel\International\Geo\Nation	BL-TLN0124796CMACGM.scr

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3644 set thread context of 1396	3644	BL-TLN0124796CMACGM.scr	97

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	powershell.exe
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

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
5104	schtasks.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
3644	BL-TLN0124796CMACGM.scr
3516	powershell.exe
4628	powershell.exe
3644	BL-TLN0124796CMACGM.scr
3516	powershell.exe
4628	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	3644	BL-TLN0124796CMACGM.scr
Token: SeDebugPrivilege	4628	powershell.exe
Token: SeDebugPrivilege	3516	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1396	BL-TLN0124796CMACGM.scr

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 3644 wrote to memory of 4628	3644	BL-TLN0124796CMACGM.scr	91
PID 3644 wrote to memory of 4628	3644	BL-TLN0124796CMACGM.scr	91
PID 3644 wrote to memory of 4628	3644	BL-TLN0124796CMACGM.scr	91
PID 3644 wrote to memory of 3516	3644	BL-TLN0124796CMACGM.scr	93
PID 3644 wrote to memory of 3516	3644	BL-TLN0124796CMACGM.scr	93
PID 3644 wrote to memory of 3516	3644	BL-TLN0124796CMACGM.scr	93
PID 3644 wrote to memory of 5104	3644	BL-TLN0124796CMACGM.scr	95
PID 3644 wrote to memory of 5104	3644	BL-TLN0124796CMACGM.scr	95
PID 3644 wrote to memory of 5104	3644	BL-TLN0124796CMACGM.scr	95
PID 3644 wrote to memory of 1396	3644	BL-TLN0124796CMACGM.scr	97
PID 3644 wrote to memory of 1396	3644	BL-TLN0124796CMACGM.scr	97
PID 3644 wrote to memory of 1396	3644	BL-TLN0124796CMACGM.scr	97
PID 3644 wrote to memory of 1396	3644	BL-TLN0124796CMACGM.scr	97
PID 3644 wrote to memory of 1396	3644	BL-TLN0124796CMACGM.scr	97
PID 3644 wrote to memory of 1396	3644	BL-TLN0124796CMACGM.scr	97
PID 3644 wrote to memory of 1396	3644	BL-TLN0124796CMACGM.scr	97
PID 3644 wrote to memory of 1396	3644	BL-TLN0124796CMACGM.scr	97
PID 3644 wrote to memory of 1396	3644	BL-TLN0124796CMACGM.scr	97
PID 3644 wrote to memory of 1396	3644	BL-TLN0124796CMACGM.scr	97
PID 3644 wrote to memory of 1396	3644	BL-TLN0124796CMACGM.scr	97
PID 3644 wrote to memory of 1396	3644	BL-TLN0124796CMACGM.scr	97

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:3644
- 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:4628
- 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:3516
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\LdtceRaylJq" /XML "C:\Users\Admin\AppData\Local\Temp\tmpF7C.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:5104
- 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:1396

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
85da268883e225a025efe25f773779ab

SHA1
b7888848037c2d0be0d89ada4702b9f5bfa306f1

SHA256
cafea69bdf99e0095630b897043b6c66ed645329c2d369d61a4ede094168e020

SHA512
7b76616b96ad86dad08554ad36b37b9bcdb29427f686e322d2f77ed1e2b1cb401ff053a76312bfb34144c4d742ee55d58e47d639c30bb19c37247f46c5e9aa1e

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
75c7f72d19dc0d75c3b6bb49b08e429d

SHA1
13ef150746fd90e9bf60b05ee286cf8ea0da277d

SHA256
26b786a2a2339d3e13493004388ea766ca2c2dd7c1594e2a48f2d5621b654db8

SHA512
bcd53edf53fc048127ecad5c12e823ab9c2d59a54c73d725787c5637ca5b6fdf863e283d66b3947b0f42c603ebf0edf71a9c0df0b59fd7d0098dafe668844b15

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_lofmczuh.xx4.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpF7C.tmp

Filesize
1KB

MD5
6167d0bfd236d00ca6a26d9fb0094ecb

SHA1
af7bc51c6c5eb548ac177c8e06d05520d3dd1df2

SHA256
e4974a87dd1aa7e586939830a68db83ec3431f3deaccb87f32f0f569fe112a0b

SHA512
1d6edb2bc909b933f21408609361c203cbac6ca6afc2210b117b199d0fa88799595de7dbaaae7b4126bd95f2a86486c4495c663e055ce14bb995c472f48d2df3

Download Submit
memory/1396-114-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1396-58-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1396-106-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1396-122-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1396-123-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1396-130-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1396-85-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1396-107-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1396-56-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1396-57-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1396-55-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1396-47-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1396-131-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1396-50-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1396-46-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1396-45-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3516-53-0x00000000060C0000-0x00000000060DE000-memory.dmp

Filesize
120KB

Download
memory/3516-90-0x0000000007640000-0x0000000007654000-memory.dmp

Filesize
80KB

Download
memory/3516-88-0x0000000007600000-0x0000000007611000-memory.dmp

Filesize
68KB

Download
memory/3516-87-0x0000000007680000-0x0000000007716000-memory.dmp

Filesize
600KB

Download
memory/3516-91-0x0000000007740000-0x000000000775A000-memory.dmp

Filesize
104KB

Download
memory/3516-20-0x0000000074990000-0x0000000075140000-memory.dmp

Filesize
7.7MB

Download
memory/3516-93-0x0000000007720000-0x0000000007728000-memory.dmp

Filesize
32KB

Download
memory/3516-100-0x0000000074990000-0x0000000075140000-memory.dmp

Filesize
7.7MB

Download
memory/3516-69-0x0000000075220000-0x000000007526C000-memory.dmp

Filesize
304KB

Download
memory/3516-54-0x0000000006680000-0x00000000066CC000-memory.dmp

Filesize
304KB

Download
memory/3516-19-0x0000000074990000-0x0000000075140000-memory.dmp

Filesize
7.7MB

Download
memory/3516-35-0x0000000005AC0000-0x0000000005E14000-memory.dmp

Filesize
3.3MB

Download
memory/3516-59-0x00000000066F0000-0x0000000006722000-memory.dmp

Filesize
200KB

Download
memory/3644-6-0x0000000007160000-0x0000000007172000-memory.dmp

Filesize
72KB

Download
memory/3644-5-0x0000000074990000-0x0000000075140000-memory.dmp

Filesize
7.7MB

Download
memory/3644-0-0x000000007499E000-0x000000007499F000-memory.dmp

Filesize
4KB

Download
memory/3644-7-0x000000007499E000-0x000000007499F000-memory.dmp

Filesize
4KB

Download
memory/3644-8-0x0000000074990000-0x0000000075140000-memory.dmp

Filesize
7.7MB

Download
memory/3644-4-0x0000000005800000-0x000000000580A000-memory.dmp

Filesize
40KB

Download
memory/3644-9-0x00000000075F0000-0x00000000076B0000-memory.dmp

Filesize
768KB

Download
memory/3644-10-0x0000000009CF0000-0x0000000009D8C000-memory.dmp

Filesize
624KB

Download
memory/3644-3-0x0000000005810000-0x00000000058A2000-memory.dmp

Filesize
584KB

Download
memory/3644-52-0x0000000074990000-0x0000000075140000-memory.dmp

Filesize
7.7MB

Download
memory/3644-2-0x0000000005D20000-0x00000000062C4000-memory.dmp

Filesize
5.6MB

Download
memory/3644-1-0x0000000000D50000-0x0000000000E3A000-memory.dmp

Filesize
936KB

Download
memory/4628-18-0x0000000074990000-0x0000000075140000-memory.dmp

Filesize
7.7MB

Download
memory/4628-89-0x0000000007510000-0x000000000751E000-memory.dmp

Filesize
56KB

Download
memory/4628-92-0x0000000007620000-0x000000000763A000-memory.dmp

Filesize
104KB

Download
memory/4628-86-0x0000000007350000-0x000000000735A000-memory.dmp

Filesize
40KB

Download
memory/4628-15-0x0000000002690000-0x00000000026C6000-memory.dmp

Filesize
216KB

Download
memory/4628-82-0x0000000007930000-0x0000000007FAA000-memory.dmp

Filesize
6.5MB

Download
memory/4628-83-0x00000000072E0000-0x00000000072FA000-memory.dmp

Filesize
104KB

Download
memory/4628-99-0x0000000074990000-0x0000000075140000-memory.dmp

Filesize
7.7MB

Download
memory/4628-74-0x00000000071E0000-0x0000000007283000-memory.dmp

Filesize
652KB

Download
memory/4628-60-0x0000000075220000-0x000000007526C000-memory.dmp

Filesize
304KB

Download
memory/4628-71-0x0000000006510000-0x000000000652E000-memory.dmp

Filesize
120KB

Download
memory/4628-16-0x0000000005060000-0x0000000005688000-memory.dmp

Filesize
6.2MB

Download
memory/4628-17-0x0000000074990000-0x0000000075140000-memory.dmp

Filesize
7.7MB

Download
memory/4628-22-0x0000000004F00000-0x0000000004F22000-memory.dmp

Filesize
136KB

Download
memory/4628-23-0x0000000004FA0000-0x0000000005006000-memory.dmp

Filesize
408KB

Download
memory/4628-24-0x0000000005790000-0x00000000057F6000-memory.dmp

Filesize
408KB

Download
memory/4628-25-0x0000000074990000-0x0000000075140000-memory.dmp

Filesize
7.7MB

Download