remcos | 6fb1afbb72d328bdaca9c019107c5ce12c81bfbabac1f1b7426db29ffec79f96

Analysis

max time kernel
598s
max time network
577s
platform
windows10-1703_x64
resource
win10-20240404-en
resource tags

arch:x64arch:x86image:win10-20240404-enlocale:en-usos:windows10-1703-x64system
submitted
05-09-2024 19:44

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General

Target

PO#720.exe
Size

914KB
MD5

57c246dd2b2221edbfd54ff9246a0099
SHA1

3e4dc6e19407ff041b25629082a90382be7b957f
SHA256

6fb1afbb72d328bdaca9c019107c5ce12c81bfbabac1f1b7426db29ffec79f96
SHA512

5a49e14dfaa8b6f53bc9e5da299f43d199389ded897c9a23ec6615c396bc83e6589787f0704fa097c395296d643fd0b6b3e83dbdddad385d2ee5af5825cea9e2
SSDEEP

24576:+Eb5NCjPBS2nv0frerFWM+u848EUjooYgyUKHdw:N5N+5S2nv0fKxIuRUjoSK

Score

10^/10

remcos throttle_8967 discovery execution rat

Malware Config

Extracted

Family

remcos

Botnet

throttle_8967

154.216.18.217:8967

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-4SV4HO
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
3308	powershell.exe
3960	powershell.exe

Uses the VBS compiler for execution 1 TTPs

Scripting
T1064

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 204 set thread context of 4056	204	PO#720.exe	80

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	PO#720.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	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vbc.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
5056	schtasks.exe

Suspicious behavior: EnumeratesProcesses 14 IoCs

pid	Process
204	PO#720.exe
204	PO#720.exe
204	PO#720.exe
204	PO#720.exe
204	PO#720.exe
204	PO#720.exe
204	PO#720.exe
3308	powershell.exe
3960	powershell.exe
3960	powershell.exe
204	PO#720.exe
3308	powershell.exe
3960	powershell.exe
3308	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	204	PO#720.exe
Token: SeDebugPrivilege	3308	powershell.exe
Token: SeDebugPrivilege	3960	powershell.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 204 wrote to memory of 3308	204	PO#720.exe	74
PID 204 wrote to memory of 3308	204	PO#720.exe	74
PID 204 wrote to memory of 3308	204	PO#720.exe	74
PID 204 wrote to memory of 3960	204	PO#720.exe	76
PID 204 wrote to memory of 3960	204	PO#720.exe	76
PID 204 wrote to memory of 3960	204	PO#720.exe	76
PID 204 wrote to memory of 5056	204	PO#720.exe	77
PID 204 wrote to memory of 5056	204	PO#720.exe	77
PID 204 wrote to memory of 5056	204	PO#720.exe	77
PID 204 wrote to memory of 4056	204	PO#720.exe	80
PID 204 wrote to memory of 4056	204	PO#720.exe	80
PID 204 wrote to memory of 4056	204	PO#720.exe	80
PID 204 wrote to memory of 4056	204	PO#720.exe	80
PID 204 wrote to memory of 4056	204	PO#720.exe	80
PID 204 wrote to memory of 4056	204	PO#720.exe	80
PID 204 wrote to memory of 4056	204	PO#720.exe	80
PID 204 wrote to memory of 4056	204	PO#720.exe	80
PID 204 wrote to memory of 4056	204	PO#720.exe	80
PID 204 wrote to memory of 4056	204	PO#720.exe	80
PID 204 wrote to memory of 4056	204	PO#720.exe	80
PID 204 wrote to memory of 4056	204	PO#720.exe	80

C:\Users\Admin\AppData\Local\Temp\PO#720.exe
"C:\Users\Admin\AppData\Local\Temp\PO#720.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:204
- 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\PO#720.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3308
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\VdrrjnwYc.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3960
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\VdrrjnwYc" /XML "C:\Users\Admin\AppData\Local\Temp\tmpC3BD.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:5056
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4056

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

Scripting

T1064

Persistence

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Scripting

T1064

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
2KB

MD5
1c19c16e21c97ed42d5beabc93391fc5

SHA1
8ad83f8e0b3acf8dfbbf87931e41f0d664c4df68

SHA256
1bcd97396c83babfe6c5068ba590d7a3f8b70e72955a9d1e4070648e404cbf05

SHA512
7d18776d8f649b3d29c182ff03efc6cea8b527542ee55304980f24577aae8b64e37044407776e220984346c3998ace5f8853afa58c8b38407482a728e9495e0c

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

Filesize
18KB

MD5
592702d0f7bb44e7fc851ba8b1c1b205

SHA1
016cc66384083c91d6b0dd6d56fe84b6fe61e48c

SHA256
be7bec1fd6232f39d70ca40f3c6178e6f44ea1bdfd6334f7a38c70738f117fd6

SHA512
d6ba3ce7640adb597dcef8c55c91a36791e4930da7b231443aa11acf1c17a2e4090a02eca28013e7b06aa3a99e94508d032d91aaf70d24276d482d4996522e23

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_0gm5kku0.0ir.ps1

Filesize
1B

MD5
c4ca4238a0b923820dcc509a6f75849b

SHA1
356a192b7913b04c54574d18c28d46e6395428ab

SHA256
6b86b273ff34fce19d6b804eff5a3f5747ada4eaa22f1d49c01e52ddb7875b4b

SHA512
4dff4ea340f0a823f15d3f4f01ab62eae0e5da579ccb851f8db9dfe84c58b2b37b89903a740e1ee172da793a6e79d560e5f7f9bd058a12a280433ed6fa46510a

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpC3BD.tmp

Filesize
1KB

MD5
766886e37694e7b565d2cc2af3f1fa30

SHA1
da5e3bca1c31c392225db3b7f880424a4f368f38

SHA256
9e94e0e2c29b293e34803362a0ea71f932987fda30bde36f326fa86e21a6802a

SHA512
73f98af1f529e4aac42613b51609daf42706cf2b4ba119b6a18807e53ac4e0aeec9ff19fd5bc24b12248a7b200d681a470dcd0d31465833ff72cbcf6b820c7ed

Download Submit
memory/204-8-0x00000000730E0000-0x00000000737CE000-memory.dmp

Filesize
6.9MB

Download
memory/204-5-0x00000000730E0000-0x00000000737CE000-memory.dmp

Filesize
6.9MB

Download
memory/204-6-0x00000000065D0000-0x00000000065E8000-memory.dmp

Filesize
96KB

Download
memory/204-7-0x00000000730EE000-0x00000000730EF000-memory.dmp

Filesize
4KB

Download
memory/204-4-0x0000000005050000-0x000000000505A000-memory.dmp

Filesize
40KB

Download
memory/204-9-0x0000000006680000-0x0000000006740000-memory.dmp

Filesize
768KB

Download
memory/204-10-0x0000000008DD0000-0x0000000008E6C000-memory.dmp

Filesize
624KB

Download
memory/204-38-0x00000000730E0000-0x00000000737CE000-memory.dmp

Filesize
6.9MB

Download
memory/204-0-0x00000000730EE000-0x00000000730EF000-memory.dmp

Filesize
4KB

Download
memory/204-3-0x00000000050B0000-0x0000000005142000-memory.dmp

Filesize
584KB

Download
memory/204-2-0x00000000055B0000-0x0000000005AAE000-memory.dmp

Filesize
5.0MB

Download
memory/204-1-0x0000000000720000-0x000000000080A000-memory.dmp

Filesize
936KB

Download
memory/3308-18-0x00000000730E0000-0x00000000737CE000-memory.dmp

Filesize
6.9MB

Download
memory/3308-25-0x00000000069F0000-0x0000000006A12000-memory.dmp

Filesize
136KB

Download
memory/3308-516-0x00000000730E0000-0x00000000737CE000-memory.dmp

Filesize
6.9MB

Download
memory/3308-21-0x00000000730E0000-0x00000000737CE000-memory.dmp

Filesize
6.9MB

Download
memory/3308-28-0x0000000007330000-0x0000000007680000-memory.dmp

Filesize
3.3MB

Download
memory/3308-19-0x00000000730E0000-0x00000000737CE000-memory.dmp

Filesize
6.9MB

Download
memory/3308-84-0x000000006E1D0000-0x000000006E21B000-memory.dmp

Filesize
300KB

Download
memory/3308-20-0x0000000006D00000-0x0000000007328000-memory.dmp

Filesize
6.2MB

Download
memory/3308-17-0x0000000000C00000-0x0000000000C36000-memory.dmp

Filesize
216KB

Download
memory/3960-37-0x00000000087F0000-0x000000000883B000-memory.dmp

Filesize
300KB

Download
memory/3960-484-0x0000000009DF0000-0x0000000009DF8000-memory.dmp

Filesize
32KB

Download
memory/3960-36-0x0000000008190000-0x00000000081AC000-memory.dmp

Filesize
112KB

Download
memory/3960-39-0x0000000008AB0000-0x0000000008B26000-memory.dmp

Filesize
472KB

Download
memory/3960-27-0x00000000082D0000-0x0000000008336000-memory.dmp

Filesize
408KB

Download
memory/3960-26-0x0000000008080000-0x00000000080E6000-memory.dmp

Filesize
408KB

Download
memory/3960-475-0x0000000009E00000-0x0000000009E1A000-memory.dmp

Filesize
104KB

Download
memory/3960-90-0x0000000009E60000-0x0000000009EF4000-memory.dmp

Filesize
592KB

Download
memory/3960-78-0x000000006E1D0000-0x000000006E21B000-memory.dmp

Filesize
300KB

Download
memory/3960-85-0x0000000009CA0000-0x0000000009D45000-memory.dmp

Filesize
660KB

Download
memory/3960-79-0x0000000009920000-0x000000000993E000-memory.dmp

Filesize
120KB

Download
memory/3960-77-0x0000000009940000-0x0000000009973000-memory.dmp

Filesize
204KB

Download
memory/4056-518-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4056-48-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4056-519-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4056-521-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4056-29-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4056-49-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4056-35-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4056-517-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4056-543-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4056-52-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4056-34-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4056-522-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4056-525-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4056-526-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4056-527-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4056-537-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4056-538-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4056-32-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download