remcos | cd76524a5a1a193336ce0a72efa54af99367743c2d380d0416a1d09a516fad8b

Analysis

max time kernel
147s
max time network
143s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
24-09-2024 09:44

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General

Target

PurchaseOrder.exe
Size

902KB
MD5

171f8a0f5bba2ba4fab8d479c65f6651
SHA1

a7e8546d3b1dc9482e5800497eb482518efd4427
SHA256

cd76524a5a1a193336ce0a72efa54af99367743c2d380d0416a1d09a516fad8b
SHA512

3e113f1f1afd56c9ba8ae44f24480f89a60db7f62432cfbf9b77320747f48881ac81bfa692c18692a92906372de70bd8538eea4a88c253fa7f4a6b67d4b5915c
SSDEEP

24576:TlFCHP+tB+XNpYpKwiQgAG5FgfsmW1bp9xDe6:pFEtXopK1QVG0fUpT

Score

10^/10

remcos remotehost discovery execution rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

127.0.0.1:59321

nnamoo.duckdns.org:59321

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
logs.dat
keylog_flag
false
keylog_folder
remcos
mouse_option
false
mutex
Rmc-41EVS0
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
startup_value
Remcos
take_screenshot_option
false
take_screenshot_time
5

Signatures

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

Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
3472	powershell.exe
3020	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-1-5-21-786284298-625481688-3210388970-1000\Control Panel\International\Geo\Nation	PurchaseOrder.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1936 set thread context of 852	1936	PurchaseOrder.exe	95

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 5 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	PurchaseOrder.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	MSBuild.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
2952	schtasks.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
1936	PurchaseOrder.exe
3472	powershell.exe
3020	powershell.exe
1936	PurchaseOrder.exe
3020	powershell.exe
3472	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1936	PurchaseOrder.exe
Token: SeDebugPrivilege	3472	powershell.exe
Token: SeDebugPrivilege	3020	powershell.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 1936 wrote to memory of 3472	1936	PurchaseOrder.exe	89
PID 1936 wrote to memory of 3472	1936	PurchaseOrder.exe	89
PID 1936 wrote to memory of 3472	1936	PurchaseOrder.exe	89
PID 1936 wrote to memory of 3020	1936	PurchaseOrder.exe	91
PID 1936 wrote to memory of 3020	1936	PurchaseOrder.exe	91
PID 1936 wrote to memory of 3020	1936	PurchaseOrder.exe	91
PID 1936 wrote to memory of 2952	1936	PurchaseOrder.exe	93
PID 1936 wrote to memory of 2952	1936	PurchaseOrder.exe	93
PID 1936 wrote to memory of 2952	1936	PurchaseOrder.exe	93
PID 1936 wrote to memory of 852	1936	PurchaseOrder.exe	95
PID 1936 wrote to memory of 852	1936	PurchaseOrder.exe	95
PID 1936 wrote to memory of 852	1936	PurchaseOrder.exe	95
PID 1936 wrote to memory of 852	1936	PurchaseOrder.exe	95
PID 1936 wrote to memory of 852	1936	PurchaseOrder.exe	95
PID 1936 wrote to memory of 852	1936	PurchaseOrder.exe	95
PID 1936 wrote to memory of 852	1936	PurchaseOrder.exe	95
PID 1936 wrote to memory of 852	1936	PurchaseOrder.exe	95
PID 1936 wrote to memory of 852	1936	PurchaseOrder.exe	95
PID 1936 wrote to memory of 852	1936	PurchaseOrder.exe	95
PID 1936 wrote to memory of 852	1936	PurchaseOrder.exe	95
PID 1936 wrote to memory of 852	1936	PurchaseOrder.exe	95

C:\Users\Admin\AppData\Local\Temp\PurchaseOrder.exe
"C:\Users\Admin\AppData\Local\Temp\PurchaseOrder.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1936
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\PurchaseOrder.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3472
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\YzFfWxw.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3020
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\YzFfWxw" /XML "C:\Users\Admin\AppData\Local\Temp\tmpDD02.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2952
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:852

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log

Filesize
2KB

MD5
968cb9309758126772781b83adb8a28f

SHA1
8da30e71accf186b2ba11da1797cf67f8f78b47c

SHA256
92099c10776bb7e3f2a8d1b82d4d40d0c4627e4f1bf754a6e58dfd2c2e97042a

SHA512
4bd50732f8af4d688d95999bddfd296115d7033ddc38f86c9fb1f47fde202bffa27e9088bebcaa3064ca946af2f5c1ca6cbde49d0907f0005c7ab42874515dd3

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

Filesize
18KB

MD5
e0ac6313c4b87b1a64192a0bf55d7643

SHA1
4faa37985c90ea96c565105721d5cffa8a0e118b

SHA256
649884074d5ad3be07033becace1e7823bd6b75084751c6692434039cee39352

SHA512
917d40dac916956b9783a52afc375d447aebfa04cd4a653ed82ea934c7c8991210d66c2dba7f7b392538efc380d9a50cd9872954a6588dd0960ba0e59bbc76dc

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ijzmxcgd.qty.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpDD02.tmp

Filesize
1KB

MD5
0726813b1daba50ec6fbdbf30f084411

SHA1
88bfbddb735e81e94c8e105a45bfdb99c6a45381

SHA256
3b2ed799fc92e93e7b05031d0a72764604d7d7196983905a8fad5a2215d81700

SHA512
a40c3f3e60bd478bf5433cd6ecd1bff84e1d9d77c095fc556f8b968c665c880da20fd99cde70ae53b599c6b45d5f99f2efe159461f96a858b4e6a7d6a02903b5

Download Submit
memory/852-102-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/852-94-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/852-99-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/852-100-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/852-101-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/852-79-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/852-103-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/852-97-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/852-105-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/852-43-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/852-96-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/852-45-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/852-104-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/852-95-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/852-49-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/852-38-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1936-0-0x0000000074E4E000-0x0000000074E4F000-memory.dmp

Filesize
4KB

Download
memory/1936-10-0x0000000009D90000-0x0000000009E2C000-memory.dmp

Filesize
624KB

Download
memory/1936-1-0x0000000000DE0000-0x0000000000EC8000-memory.dmp

Filesize
928KB

Download
memory/1936-2-0x0000000005DA0000-0x0000000006344000-memory.dmp

Filesize
5.6MB

Download
memory/1936-3-0x00000000058D0000-0x0000000005962000-memory.dmp

Filesize
584KB

Download
memory/1936-4-0x0000000074E40000-0x00000000755F0000-memory.dmp

Filesize
7.7MB

Download
memory/1936-5-0x00000000058C0000-0x00000000058CA000-memory.dmp

Filesize
40KB

Download
memory/1936-6-0x0000000007230000-0x0000000007242000-memory.dmp

Filesize
72KB

Download
memory/1936-7-0x0000000074E4E000-0x0000000074E4F000-memory.dmp

Filesize
4KB

Download
memory/1936-8-0x0000000074E40000-0x00000000755F0000-memory.dmp

Filesize
7.7MB

Download
memory/1936-52-0x0000000074E40000-0x00000000755F0000-memory.dmp

Filesize
7.7MB

Download
memory/1936-9-0x00000000076B0000-0x000000000776E000-memory.dmp

Filesize
760KB

Download
memory/3020-22-0x0000000005570000-0x0000000005592000-memory.dmp

Filesize
136KB

Download
memory/3020-27-0x0000000074E40000-0x00000000755F0000-memory.dmp

Filesize
7.7MB

Download
memory/3020-55-0x000000006F950000-0x000000006F99C000-memory.dmp

Filesize
304KB

Download
memory/3020-71-0x00000000074B0000-0x00000000074CE000-memory.dmp

Filesize
120KB

Download
memory/3020-76-0x0000000007730000-0x00000000077D3000-memory.dmp

Filesize
652KB

Download
memory/3020-77-0x0000000007EB0000-0x000000000852A000-memory.dmp

Filesize
6.5MB

Download
memory/3020-78-0x0000000007860000-0x000000000787A000-memory.dmp

Filesize
104KB

Download
memory/3020-53-0x0000000006680000-0x00000000066CC000-memory.dmp

Filesize
304KB

Download
memory/3020-80-0x00000000078E0000-0x00000000078EA000-memory.dmp

Filesize
40KB

Download
memory/3020-81-0x0000000007AE0000-0x0000000007B76000-memory.dmp

Filesize
600KB

Download
memory/3020-82-0x0000000007A60000-0x0000000007A71000-memory.dmp

Filesize
68KB

Download
memory/3020-54-0x00000000074F0000-0x0000000007522000-memory.dmp

Filesize
200KB

Download
memory/3020-51-0x0000000006540000-0x000000000655E000-memory.dmp

Filesize
120KB

Download
memory/3020-26-0x0000000005F00000-0x0000000006254000-memory.dmp

Filesize
3.3MB

Download
memory/3020-86-0x0000000007B80000-0x0000000007B88000-memory.dmp

Filesize
32KB

Download
memory/3020-15-0x0000000002BC0000-0x0000000002BF6000-memory.dmp

Filesize
216KB

Download
memory/3020-18-0x0000000074E40000-0x00000000755F0000-memory.dmp

Filesize
7.7MB

Download
memory/3020-19-0x0000000074E40000-0x00000000755F0000-memory.dmp

Filesize
7.7MB

Download
memory/3020-93-0x0000000074E40000-0x00000000755F0000-memory.dmp

Filesize
7.7MB

Download
memory/3020-24-0x0000000005680000-0x00000000056E6000-memory.dmp

Filesize
408KB

Download
memory/3020-23-0x0000000005610000-0x0000000005676000-memory.dmp

Filesize
408KB

Download
memory/3472-17-0x00000000052F0000-0x0000000005918000-memory.dmp

Filesize
6.2MB

Download
memory/3472-92-0x0000000074E40000-0x00000000755F0000-memory.dmp

Filesize
7.7MB

Download
memory/3472-85-0x00000000076C0000-0x00000000076DA000-memory.dmp

Filesize
104KB

Download
memory/3472-84-0x00000000075C0000-0x00000000075D4000-memory.dmp

Filesize
80KB

Download
memory/3472-83-0x00000000075B0000-0x00000000075BE000-memory.dmp

Filesize
56KB

Download
memory/3472-65-0x000000006F950000-0x000000006F99C000-memory.dmp

Filesize
304KB

Download
memory/3472-25-0x0000000074E40000-0x00000000755F0000-memory.dmp

Filesize
7.7MB

Download
memory/3472-20-0x0000000074E40000-0x00000000755F0000-memory.dmp

Filesize
7.7MB

Download
memory/3472-16-0x0000000074E40000-0x00000000755F0000-memory.dmp

Filesize
7.7MB

Download