remcos | 173fa94e725abc88acf0d848bdee94d216a3c74b4492e006405c357824fab818

General

Target

DHLAWB_NO_92847309329.exe
Size

933KB
MD5

710651fb293df9922080f5b7a4d10916
SHA1

a38b66874d59a9e026b2c15e49501e8f4e1fd6b5
SHA256

173fa94e725abc88acf0d848bdee94d216a3c74b4492e006405c357824fab818
SHA512

bdc25b6f70bab4352e7c03ae7fbcd6a9718fe98804d9b24f27dc33b0bba114f0bab2d37af1de53d4dbe0e2794f3e706dbd3ef3765de2820bbd48f4b347f132d9
SSDEEP

24576:nUkh5oDiJ31erRs6PXmm7V9R7SoAZA0C8/UYn2xlcX6:nn5oDiZgOCV9RWrtCAU3xi

Score

10^/10

remcos 76485 discovery execution rat

Malware Config

Extracted

Family

remcos

Botnet

76485

C2

windowsocttehe.duckdns.org:52411

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
764-0XPV9J
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 1 IoCs

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

execution

PowerShell

T1059.001

pid	Process
3064	powershell.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2672 set thread context of 2864	2672	DHLAWB_NO_92847309329.exe	35

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 4 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	DHLAWB_NO_92847309329.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	DHLAWB_NO_92847309329.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
2096	schtasks.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
3064	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3064	powershell.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 2672 wrote to memory of 3064	2672	DHLAWB_NO_92847309329.exe	31
PID 2672 wrote to memory of 3064	2672	DHLAWB_NO_92847309329.exe	31
PID 2672 wrote to memory of 3064	2672	DHLAWB_NO_92847309329.exe	31
PID 2672 wrote to memory of 3064	2672	DHLAWB_NO_92847309329.exe	31
PID 2672 wrote to memory of 2096	2672	DHLAWB_NO_92847309329.exe	32
PID 2672 wrote to memory of 2096	2672	DHLAWB_NO_92847309329.exe	32
PID 2672 wrote to memory of 2096	2672	DHLAWB_NO_92847309329.exe	32
PID 2672 wrote to memory of 2096	2672	DHLAWB_NO_92847309329.exe	32
PID 2672 wrote to memory of 2864	2672	DHLAWB_NO_92847309329.exe	35
PID 2672 wrote to memory of 2864	2672	DHLAWB_NO_92847309329.exe	35
PID 2672 wrote to memory of 2864	2672	DHLAWB_NO_92847309329.exe	35
PID 2672 wrote to memory of 2864	2672	DHLAWB_NO_92847309329.exe	35
PID 2672 wrote to memory of 2864	2672	DHLAWB_NO_92847309329.exe	35
PID 2672 wrote to memory of 2864	2672	DHLAWB_NO_92847309329.exe	35
PID 2672 wrote to memory of 2864	2672	DHLAWB_NO_92847309329.exe	35
PID 2672 wrote to memory of 2864	2672	DHLAWB_NO_92847309329.exe	35
PID 2672 wrote to memory of 2864	2672	DHLAWB_NO_92847309329.exe	35
PID 2672 wrote to memory of 2864	2672	DHLAWB_NO_92847309329.exe	35
PID 2672 wrote to memory of 2864	2672	DHLAWB_NO_92847309329.exe	35
PID 2672 wrote to memory of 2864	2672	DHLAWB_NO_92847309329.exe	35
PID 2672 wrote to memory of 2864	2672	DHLAWB_NO_92847309329.exe	35

C:\Users\Admin\AppData\Local\Temp\DHLAWB_NO_92847309329.exe
"C:\Users\Admin\AppData\Local\Temp\DHLAWB_NO_92847309329.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2672
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\rjOyFV.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3064
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\rjOyFV" /XML "C:\Users\Admin\AppData\Local\Temp\tmpE8E8.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2096
- C:\Users\Admin\AppData\Local\Temp\DHLAWB_NO_92847309329.exe
  "C:\Users\Admin\AppData\Local\Temp\DHLAWB_NO_92847309329.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2864

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\tmpE8E8.tmp

Filesize
1KB

MD5
22a6fdf0e7849e895997545094582851

SHA1
347d674dcb0a7229bf615551fc4e88c0f37fe37a

SHA256
b75a96065f09bc3807c15bff012d0ad47a162cf0f56dc613e6db3a1c7d1b0523

SHA512
0768d4a989d357ffbf2598c406aa227a33ab4940d1b17deacd14981a7df0897ab6d435de70bb28fbcf4362b757ec33b0af91ce66284a53930aba427d1e9e73d1

Download Submit
memory/2672-34-0x0000000074A00000-0x00000000750EE000-memory.dmp

Filesize
6.9MB

Download
memory/2672-1-0x0000000000A60000-0x0000000000B50000-memory.dmp

Filesize
960KB

Download
memory/2672-2-0x0000000074A00000-0x00000000750EE000-memory.dmp

Filesize
6.9MB

Download
memory/2672-3-0x0000000000480000-0x000000000049C000-memory.dmp

Filesize
112KB

Download
memory/2672-4-0x0000000074A0E000-0x0000000074A0F000-memory.dmp

Filesize
4KB

Download
memory/2672-5-0x0000000074A00000-0x00000000750EE000-memory.dmp

Filesize
6.9MB

Download
memory/2672-6-0x00000000052E0000-0x000000000539E000-memory.dmp

Filesize
760KB

Download
memory/2672-0-0x0000000074A0E000-0x0000000074A0F000-memory.dmp

Filesize
4KB

Download
memory/2864-20-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2864-36-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2864-31-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2864-30-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2864-28-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2864-24-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2864-22-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2864-26-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2864-18-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2864-16-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2864-14-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2864-33-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2864-35-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2864-32-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2864-37-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2864-38-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2864-40-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2864-41-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2864-42-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2864-43-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2864-44-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2864-45-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2864-46-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2864-48-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2864-47-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads