remcos | cd76524a5a1a193336ce0a72efa54af99367743c2d380d0416a1d09a516fad8b

General

Target

Purchase Order.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

C2

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
2472	powershell.exe
2836	powershell.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2336 set thread context of 2808	2336	Purchase Order.exe	37

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	Purchase Order.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
2860	schtasks.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2336	Purchase Order.exe
2472	powershell.exe
2836	powershell.exe
2336	Purchase Order.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2336	Purchase Order.exe
Token: SeDebugPrivilege	2472	powershell.exe
Token: SeDebugPrivilege	2836	powershell.exe

Suspicious use of WriteProcessMemory 25 IoCs

description	pid	Process	procid_target
PID 2336 wrote to memory of 2472	2336	Purchase Order.exe	31
PID 2336 wrote to memory of 2472	2336	Purchase Order.exe	31
PID 2336 wrote to memory of 2472	2336	Purchase Order.exe	31
PID 2336 wrote to memory of 2472	2336	Purchase Order.exe	31
PID 2336 wrote to memory of 2836	2336	Purchase Order.exe	33
PID 2336 wrote to memory of 2836	2336	Purchase Order.exe	33
PID 2336 wrote to memory of 2836	2336	Purchase Order.exe	33
PID 2336 wrote to memory of 2836	2336	Purchase Order.exe	33
PID 2336 wrote to memory of 2860	2336	Purchase Order.exe	34
PID 2336 wrote to memory of 2860	2336	Purchase Order.exe	34
PID 2336 wrote to memory of 2860	2336	Purchase Order.exe	34
PID 2336 wrote to memory of 2860	2336	Purchase Order.exe	34
PID 2336 wrote to memory of 2808	2336	Purchase Order.exe	37
PID 2336 wrote to memory of 2808	2336	Purchase Order.exe	37
PID 2336 wrote to memory of 2808	2336	Purchase Order.exe	37
PID 2336 wrote to memory of 2808	2336	Purchase Order.exe	37
PID 2336 wrote to memory of 2808	2336	Purchase Order.exe	37
PID 2336 wrote to memory of 2808	2336	Purchase Order.exe	37
PID 2336 wrote to memory of 2808	2336	Purchase Order.exe	37
PID 2336 wrote to memory of 2808	2336	Purchase Order.exe	37
PID 2336 wrote to memory of 2808	2336	Purchase Order.exe	37
PID 2336 wrote to memory of 2808	2336	Purchase Order.exe	37
PID 2336 wrote to memory of 2808	2336	Purchase Order.exe	37
PID 2336 wrote to memory of 2808	2336	Purchase Order.exe	37
PID 2336 wrote to memory of 2808	2336	Purchase Order.exe	37

C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe
"C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2336
- 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\Purchase Order.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2472
- 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:2836
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\YzFfWxw" /XML "C:\Users\Admin\AppData\Local\Temp\tmp2FD.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2860
- 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:2808

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp2FD.tmp

Filesize
1KB

MD5
70ae3b214d0c6ba737f5b8b3b45d539f

SHA1
c4d31ec247a8a54ab956aa5bcebabc27e52d762f

SHA256
4ac6b3bf077c9478549c619fcbbd558824533e98bdc6b92340f6721fc86821e1

SHA512
fc7e0f4c36039f583b6fb91a123c846bc564294768eecbd3b3caa7610e50568673aedbccffdc045784bc2858da4d238a7a1bff243fc1ecd865cc787593fa8d47

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\OKGGXY4M55PWFYU2MXKY.temp

Filesize
7KB

MD5
25c8a59c2e0a7d12b008394d15bfd23a

SHA1
d701f3039465207d4e34001662282d5fb2efea1d

SHA256
d84587dbad17838b6fcc04db45e084cb0a0741ba9facb56c2518c5fddca384c4

SHA512
020a431f07c79701f04f182edf2249c4850ee04858b145c69a8b5962be5a443d682d5f685f66857e8a8f0000a133571505f0946f5e76c429809091a1d5aaeb3e

Download Submit
memory/2336-40-0x0000000074680000-0x0000000074D6E000-memory.dmp

Filesize
6.9MB

Download
memory/2336-1-0x0000000001380000-0x0000000001468000-memory.dmp

Filesize
928KB

Download
memory/2336-2-0x0000000074680000-0x0000000074D6E000-memory.dmp

Filesize
6.9MB

Download
memory/2336-3-0x0000000000520000-0x0000000000532000-memory.dmp

Filesize
72KB

Download
memory/2336-4-0x000000007468E000-0x000000007468F000-memory.dmp

Filesize
4KB

Download
memory/2336-5-0x0000000074680000-0x0000000074D6E000-memory.dmp

Filesize
6.9MB

Download
memory/2336-6-0x0000000005410000-0x00000000054CE000-memory.dmp

Filesize
760KB

Download
memory/2336-0-0x000000007468E000-0x000000007468F000-memory.dmp

Filesize
4KB

Download
memory/2808-21-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2808-41-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2808-35-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

Filesize
4KB

Download
memory/2808-33-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2808-38-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2808-27-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2808-25-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2808-23-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2808-39-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2808-19-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2808-36-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2808-31-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2808-29-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2808-37-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2808-42-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2808-44-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2808-43-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2808-45-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2808-49-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2808-48-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2808-50-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2808-51-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2808-52-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2808-53-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2808-55-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2808-54-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads