remcos | 802838172640a2ed4ea87b5ecbfd07629e151f25ae46e1c03d3ae11b0f78add6

General

Target

DHL AWB_NO_9078538809.exe
Size

939KB
MD5

0e317b92296b874f54a63b7ce8ef3c65
SHA1

a2c482fc7c9fea2543fac305fc4857ed6ddb8ac4
SHA256

802838172640a2ed4ea87b5ecbfd07629e151f25ae46e1c03d3ae11b0f78add6
SHA512

ca5de1bb5bf884b28857229419371faa73d0d3570c465f19906409aebd7c821c3c5a68655e6cec8289b39cb922ca6a0fe9eb0be40c186df06448e959d0a57a99
SSDEEP

24576:VUJe35eXoREhAiOsBVdYZVB4fUtPgtmNxS3Ah77Q4cLSqc6w3:Gm1RIb3dYZVumowSG/rcLSqc6w3

Score

10^/10

remcos win discovery execution rat

Malware Config

Extracted

Family

remcos

Botnet

win

C2

windowsupdateserveraug.duckdns.org:45682

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
msc-XYOFLE
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
Remcos family
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
2236	powershell.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1568 set thread context of 2712	1568	DHL AWB_NO_9078538809.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	DHL AWB_NO_9078538809.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	DHL AWB_NO_9078538809.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
2652	schtasks.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2236	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2236	powershell.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 1568 wrote to memory of 2236	1568	DHL AWB_NO_9078538809.exe	31
PID 1568 wrote to memory of 2236	1568	DHL AWB_NO_9078538809.exe	31
PID 1568 wrote to memory of 2236	1568	DHL AWB_NO_9078538809.exe	31
PID 1568 wrote to memory of 2236	1568	DHL AWB_NO_9078538809.exe	31
PID 1568 wrote to memory of 2652	1568	DHL AWB_NO_9078538809.exe	33
PID 1568 wrote to memory of 2652	1568	DHL AWB_NO_9078538809.exe	33
PID 1568 wrote to memory of 2652	1568	DHL AWB_NO_9078538809.exe	33
PID 1568 wrote to memory of 2652	1568	DHL AWB_NO_9078538809.exe	33
PID 1568 wrote to memory of 2712	1568	DHL AWB_NO_9078538809.exe	35
PID 1568 wrote to memory of 2712	1568	DHL AWB_NO_9078538809.exe	35
PID 1568 wrote to memory of 2712	1568	DHL AWB_NO_9078538809.exe	35
PID 1568 wrote to memory of 2712	1568	DHL AWB_NO_9078538809.exe	35
PID 1568 wrote to memory of 2712	1568	DHL AWB_NO_9078538809.exe	35
PID 1568 wrote to memory of 2712	1568	DHL AWB_NO_9078538809.exe	35
PID 1568 wrote to memory of 2712	1568	DHL AWB_NO_9078538809.exe	35
PID 1568 wrote to memory of 2712	1568	DHL AWB_NO_9078538809.exe	35
PID 1568 wrote to memory of 2712	1568	DHL AWB_NO_9078538809.exe	35
PID 1568 wrote to memory of 2712	1568	DHL AWB_NO_9078538809.exe	35
PID 1568 wrote to memory of 2712	1568	DHL AWB_NO_9078538809.exe	35
PID 1568 wrote to memory of 2712	1568	DHL AWB_NO_9078538809.exe	35
PID 1568 wrote to memory of 2712	1568	DHL AWB_NO_9078538809.exe	35

C:\Users\Admin\AppData\Local\Temp\DHL AWB_NO_9078538809.exe
"C:\Users\Admin\AppData\Local\Temp\DHL AWB_NO_9078538809.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1568
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\GAmFKUIDBo.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2236
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\GAmFKUIDBo" /XML "C:\Users\Admin\AppData\Local\Temp\tmpEC52.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2652
- C:\Users\Admin\AppData\Local\Temp\DHL AWB_NO_9078538809.exe
  "C:\Users\Admin\AppData\Local\Temp\DHL AWB_NO_9078538809.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2712

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\tmpEC52.tmp

Filesize
1KB

MD5
f2f17090124266ae75d2e507772061ad

SHA1
4890e714a6df5f4816c9300e4024414c990cfb9a

SHA256
c729e7c7f8f9adec97aa932a09ac26f29c70fe73034c9dbe0eb9c37aa681c227

SHA512
0fc5badfb91db5ed0593544dc9235f1fb8c15b98485a48eddde90bb4e46634c17f3f0ecad48f9f3b8aaa58b7193d915977a29c7f08499b39b1592b4a89fd01f7

Download Submit
memory/1568-31-0x00000000745B0000-0x0000000074C9E000-memory.dmp

Filesize
6.9MB

Download
memory/1568-1-0x00000000010C0000-0x00000000011B0000-memory.dmp

Filesize
960KB

Download
memory/1568-2-0x00000000745B0000-0x0000000074C9E000-memory.dmp

Filesize
6.9MB

Download
memory/1568-3-0x0000000000560000-0x000000000057C000-memory.dmp

Filesize
112KB

Download
memory/1568-4-0x00000000745BE000-0x00000000745BF000-memory.dmp

Filesize
4KB

Download
memory/1568-5-0x00000000745B0000-0x0000000074C9E000-memory.dmp

Filesize
6.9MB

Download
memory/1568-6-0x0000000005840000-0x0000000005900000-memory.dmp

Filesize
768KB

Download
memory/1568-0-0x00000000745BE000-0x00000000745BF000-memory.dmp

Filesize
4KB

Download
memory/2712-28-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2712-36-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2712-14-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2712-12-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2712-32-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2712-30-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2712-29-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2712-18-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2712-26-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2712-25-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2712-22-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2712-20-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2712-35-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2712-16-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2712-37-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2712-38-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2712-39-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2712-40-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2712-41-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2712-42-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2712-43-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2712-44-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2712-45-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2712-46-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2712-47-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads