remcos | 9a15bd4f82adcc32d13fb16af0bd33c4d3d028895c93f4ec2cc995d9ad5f2d01

Analysis

max time kernel
147s
max time network
148s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
04-09-2024 15:26

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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
1088	powershell.exe
1196	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-1-5-21-2718105630-359604950-2820636825-1000\Control Panel\International\Geo\Nation	PO#720.exe

Uses the VBS compiler for execution 1 TTPs

Scripting
T1064

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4356 set thread context of 1092	4356	PO#720.exe	100

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	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.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
3480	schtasks.exe

Suspicious behavior: EnumeratesProcesses 14 IoCs

pid	Process
4356	PO#720.exe
4356	PO#720.exe
4356	PO#720.exe
4356	PO#720.exe
4356	PO#720.exe
4356	PO#720.exe
4356	PO#720.exe
1088	powershell.exe
1196	powershell.exe
1088	powershell.exe
4356	PO#720.exe
4356	PO#720.exe
4356	PO#720.exe
1196	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	4356	PO#720.exe
Token: SeDebugPrivilege	1088	powershell.exe
Token: SeDebugPrivilege	1196	powershell.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 4356 wrote to memory of 1088	4356	PO#720.exe	93
PID 4356 wrote to memory of 1088	4356	PO#720.exe	93
PID 4356 wrote to memory of 1088	4356	PO#720.exe	93
PID 4356 wrote to memory of 1196	4356	PO#720.exe	95
PID 4356 wrote to memory of 1196	4356	PO#720.exe	95
PID 4356 wrote to memory of 1196	4356	PO#720.exe	95
PID 4356 wrote to memory of 3480	4356	PO#720.exe	97
PID 4356 wrote to memory of 3480	4356	PO#720.exe	97
PID 4356 wrote to memory of 3480	4356	PO#720.exe	97
PID 4356 wrote to memory of 756	4356	PO#720.exe	99
PID 4356 wrote to memory of 756	4356	PO#720.exe	99
PID 4356 wrote to memory of 756	4356	PO#720.exe	99
PID 4356 wrote to memory of 1092	4356	PO#720.exe	100
PID 4356 wrote to memory of 1092	4356	PO#720.exe	100
PID 4356 wrote to memory of 1092	4356	PO#720.exe	100
PID 4356 wrote to memory of 1092	4356	PO#720.exe	100
PID 4356 wrote to memory of 1092	4356	PO#720.exe	100
PID 4356 wrote to memory of 1092	4356	PO#720.exe	100
PID 4356 wrote to memory of 1092	4356	PO#720.exe	100
PID 4356 wrote to memory of 1092	4356	PO#720.exe	100
PID 4356 wrote to memory of 1092	4356	PO#720.exe	100
PID 4356 wrote to memory of 1092	4356	PO#720.exe	100
PID 4356 wrote to memory of 1092	4356	PO#720.exe	100
PID 4356 wrote to memory of 1092	4356	PO#720.exe	100

C:\Users\Admin\AppData\Local\Temp\PO#720.exe
"C:\Users\Admin\AppData\Local\Temp\PO#720.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:4356
- 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:1088
- 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:1196
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\VdrrjnwYc" /XML "C:\Users\Admin\AppData\Local\Temp\tmpC42B.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:3480
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
  2⤵
  PID:756
- 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:1092

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

Query Registry

T1012

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
3d086a433708053f9bf9523e1d87a4e8

SHA1
b3ab5d4f282a4c8fe8c3005b8a557ed5a0e37f28

SHA256
6f8fd1b8d9788ad54eaeee329232187e24b7b43393a01aeba2d6e9675231fb69

SHA512
931ae42b4c68a4507ff2342332b08eb407050d47cf4176137ea022d0f6e513c689e998445a04c6d18d4877391705c586bfce0234632b898d41aaed0957996dfd

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

Filesize
18KB

MD5
5b416a1e6b6ef4a542bb3af08e3406f3

SHA1
716146f0298b1e7ec9dfc8c4e22d162f8a16af96

SHA256
0180e8341209fa0172f902bd73a0445992775e5265a211f44bd9fea95270c1fd

SHA512
fa1f0487fb57f34701e9249284f5d55f4fb4e4bf58d7e541f3468607847f216a8d031cfe8c39aa892c16df94bddf67837335d6b2331e0dde1918e5cfbff8b47a

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_zdwamrnv.e0u.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpC42B.tmp

Filesize
1KB

MD5
4bd3841ffe86ac0c886cf40529a75ae7

SHA1
b4b828917493f2cdf3319793493f838473107629

SHA256
8029468f475dfb4b9e15233a5fa4df4fead8011316a56cc2598c40ad93ca1b62

SHA512
b1fa56b3239132bf948e316163c2897a4f5470b3bdc8f63f90733c0a7974849c19a554d4dabedbbe27b4dc12bd2df5c7efe3396f2d9d26ec009433b220dad9c4

Download Submit
memory/1088-87-0x0000000007580000-0x0000000007594000-memory.dmp

Filesize
80KB

Download
memory/1088-51-0x0000000006010000-0x000000000602E000-memory.dmp

Filesize
120KB

Download
memory/1088-80-0x00000000072A0000-0x0000000007343000-memory.dmp

Filesize
652KB

Download
memory/1088-78-0x00000000065E0000-0x00000000065FE000-memory.dmp

Filesize
120KB

Download
memory/1088-52-0x0000000006270000-0x00000000062BC000-memory.dmp

Filesize
304KB

Download
memory/1088-59-0x0000000074EC0000-0x0000000074F0C000-memory.dmp

Filesize
304KB

Download
memory/1088-58-0x0000000006600000-0x0000000006632000-memory.dmp

Filesize
200KB

Download
memory/1088-15-0x0000000074610000-0x0000000074DC0000-memory.dmp

Filesize
7.7MB

Download
memory/1088-16-0x0000000002710000-0x0000000002746000-memory.dmp

Filesize
216KB

Download
memory/1088-17-0x0000000074610000-0x0000000074DC0000-memory.dmp

Filesize
7.7MB

Download
memory/1088-18-0x0000000005410000-0x0000000005A38000-memory.dmp

Filesize
6.2MB

Download
memory/1088-19-0x0000000074610000-0x0000000074DC0000-memory.dmp

Filesize
7.7MB

Download
memory/1088-85-0x0000000007540000-0x0000000007551000-memory.dmp

Filesize
68KB

Download
memory/1088-88-0x0000000007680000-0x000000000769A000-memory.dmp

Filesize
104KB

Download
memory/1088-92-0x0000000074610000-0x0000000074DC0000-memory.dmp

Filesize
7.7MB

Download
memory/1092-101-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1092-46-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1092-99-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1092-100-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1092-97-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1092-45-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1092-98-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1092-55-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1092-57-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1092-49-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1092-48-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1092-102-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1092-53-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1092-54-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1092-103-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1092-104-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1196-25-0x0000000005BC0000-0x0000000005C26000-memory.dmp

Filesize
408KB

Download
memory/1196-89-0x0000000007860000-0x0000000007868000-memory.dmp

Filesize
32KB

Download
memory/1196-20-0x0000000074610000-0x0000000074DC0000-memory.dmp

Filesize
7.7MB

Download
memory/1196-21-0x0000000074610000-0x0000000074DC0000-memory.dmp

Filesize
7.7MB

Download
memory/1196-23-0x0000000005AB0000-0x0000000005AD2000-memory.dmp

Filesize
136KB

Download
memory/1196-81-0x0000000007B90000-0x000000000820A000-memory.dmp

Filesize
6.5MB

Download
memory/1196-82-0x0000000007540000-0x000000000755A000-memory.dmp

Filesize
104KB

Download
memory/1196-83-0x00000000075B0000-0x00000000075BA000-memory.dmp

Filesize
40KB

Download
memory/1196-84-0x00000000077C0000-0x0000000007856000-memory.dmp

Filesize
600KB

Download
memory/1196-35-0x0000000005C30000-0x0000000005F84000-memory.dmp

Filesize
3.3MB

Download
memory/1196-86-0x0000000007770000-0x000000000777E000-memory.dmp

Filesize
56KB

Download
memory/1196-96-0x0000000074610000-0x0000000074DC0000-memory.dmp

Filesize
7.7MB

Download
memory/1196-24-0x0000000005B50000-0x0000000005BB6000-memory.dmp

Filesize
408KB

Download
memory/1196-69-0x0000000074EC0000-0x0000000074F0C000-memory.dmp

Filesize
304KB

Download
memory/4356-3-0x00000000051F0000-0x0000000005282000-memory.dmp

Filesize
584KB

Download
memory/4356-2-0x00000000057A0000-0x0000000005D44000-memory.dmp

Filesize
5.6MB

Download
memory/4356-1-0x00000000006A0000-0x000000000078A000-memory.dmp

Filesize
936KB

Download
memory/4356-0-0x000000007461E000-0x000000007461F000-memory.dmp

Filesize
4KB

Download
memory/4356-4-0x0000000074610000-0x0000000074DC0000-memory.dmp

Filesize
7.7MB

Download
memory/4356-50-0x0000000074610000-0x0000000074DC0000-memory.dmp

Filesize
7.7MB

Download
memory/4356-10-0x0000000008C20000-0x0000000008CBC000-memory.dmp

Filesize
624KB

Download
memory/4356-5-0x0000000005180000-0x000000000518A000-memory.dmp

Filesize
40KB

Download
memory/4356-9-0x0000000006450000-0x0000000006510000-memory.dmp

Filesize
768KB

Download
memory/4356-8-0x0000000074610000-0x0000000074DC0000-memory.dmp

Filesize
7.7MB

Download
memory/4356-7-0x000000007461E000-0x000000007461F000-memory.dmp

Filesize
4KB

Download
memory/4356-6-0x0000000005420000-0x0000000005438000-memory.dmp

Filesize
96KB

Download