remcos | cd76524a5a1a193336ce0a72efa54af99367743c2d380d0416a1d09a516fad8b

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

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
2688	powershell.exe
3056	powershell.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1856 set thread context of 2616	1856	PurchaseOrder.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	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	MSBuild.exe
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

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
992	schtasks.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1856	PurchaseOrder.exe
3056	powershell.exe
2688	powershell.exe
1856	PurchaseOrder.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1856	PurchaseOrder.exe
Token: SeDebugPrivilege	3056	powershell.exe
Token: SeDebugPrivilege	2688	powershell.exe

Suspicious use of WriteProcessMemory 25 IoCs

description	pid	Process	procid_target
PID 1856 wrote to memory of 2688	1856	PurchaseOrder.exe	31
PID 1856 wrote to memory of 2688	1856	PurchaseOrder.exe	31
PID 1856 wrote to memory of 2688	1856	PurchaseOrder.exe	31
PID 1856 wrote to memory of 2688	1856	PurchaseOrder.exe	31
PID 1856 wrote to memory of 3056	1856	PurchaseOrder.exe	33
PID 1856 wrote to memory of 3056	1856	PurchaseOrder.exe	33
PID 1856 wrote to memory of 3056	1856	PurchaseOrder.exe	33
PID 1856 wrote to memory of 3056	1856	PurchaseOrder.exe	33
PID 1856 wrote to memory of 992	1856	PurchaseOrder.exe	34
PID 1856 wrote to memory of 992	1856	PurchaseOrder.exe	34
PID 1856 wrote to memory of 992	1856	PurchaseOrder.exe	34
PID 1856 wrote to memory of 992	1856	PurchaseOrder.exe	34
PID 1856 wrote to memory of 2616	1856	PurchaseOrder.exe	37
PID 1856 wrote to memory of 2616	1856	PurchaseOrder.exe	37
PID 1856 wrote to memory of 2616	1856	PurchaseOrder.exe	37
PID 1856 wrote to memory of 2616	1856	PurchaseOrder.exe	37
PID 1856 wrote to memory of 2616	1856	PurchaseOrder.exe	37
PID 1856 wrote to memory of 2616	1856	PurchaseOrder.exe	37
PID 1856 wrote to memory of 2616	1856	PurchaseOrder.exe	37
PID 1856 wrote to memory of 2616	1856	PurchaseOrder.exe	37
PID 1856 wrote to memory of 2616	1856	PurchaseOrder.exe	37
PID 1856 wrote to memory of 2616	1856	PurchaseOrder.exe	37
PID 1856 wrote to memory of 2616	1856	PurchaseOrder.exe	37
PID 1856 wrote to memory of 2616	1856	PurchaseOrder.exe	37
PID 1856 wrote to memory of 2616	1856	PurchaseOrder.exe	37

C:\Users\Admin\AppData\Local\Temp\PurchaseOrder.exe
"C:\Users\Admin\AppData\Local\Temp\PurchaseOrder.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1856
- 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:2688
- 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:3056
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\YzFfWxw" /XML "C:\Users\Admin\AppData\Local\Temp\tmpEE07.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:992
- 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:2616

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\tmpEE07.tmp

Filesize
1KB

MD5
28433c5909bff634976413daec9ae8ca

SHA1
aad7654939b0f6e57c71e11568ea7b2bebee989d

SHA256
ecfd6622692919fbd62a08bd97248b605274ae19b110fca05b8863663c072238

SHA512
ac4c0a53c0bcae7e3c6e558ea80424d9ead2dff0410f04ccbf73dbddcbcc069ee98ce3ab2950474b5de90889a60ee1c2162ec329dd7861d3529cd62ad47c42b1

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\Z39W6PCJG77XAFGW751H.temp

Filesize
7KB

MD5
1cd552ab1078850274ad59a244257087

SHA1
3ab19a7ccfe41b5c13552509916a03eb98d2395f

SHA256
e8d8b83f2c6b53fe9668280a6db5ac4b7050a319c3c50bc767ed22324a2368e6

SHA512
5cc7983687c13dee2efb8d09d99c522a88e883f6d04d73d10e531fee87e4490bfb17885ee6fcbfe94e0cdd7c97e5ce2906d6dba052c5621c4990ad845ee47ec8

Download Submit
memory/1856-0-0x000000007408E000-0x000000007408F000-memory.dmp

Filesize
4KB

Download
memory/1856-1-0x00000000002D0000-0x00000000003B8000-memory.dmp

Filesize
928KB

Download
memory/1856-2-0x0000000074080000-0x000000007476E000-memory.dmp

Filesize
6.9MB

Download
memory/1856-3-0x0000000000410000-0x0000000000422000-memory.dmp

Filesize
72KB

Download
memory/1856-4-0x000000007408E000-0x000000007408F000-memory.dmp

Filesize
4KB

Download
memory/1856-5-0x0000000074080000-0x000000007476E000-memory.dmp

Filesize
6.9MB

Download
memory/1856-6-0x00000000053C0000-0x000000000547E000-memory.dmp

Filesize
760KB

Download
memory/1856-40-0x0000000074080000-0x000000007476E000-memory.dmp

Filesize
6.9MB

Download
memory/2616-29-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2616-19-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2616-38-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2616-37-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2616-35-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

Filesize
4KB

Download
memory/2616-31-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2616-36-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2616-27-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2616-25-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2616-23-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2616-21-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2616-39-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2616-33-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2616-41-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2616-42-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2616-43-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2616-44-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2616-45-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2616-47-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2616-48-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2616-49-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2616-51-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2616-50-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads