nanocore | 7cf95c0b9a54fa67fcd82ab0dc3dddbbb3861b9c4111a12e628f0003b02e41d9

Analysis

max time kernel
150s
max time network
149s
platform
windows10_x64
resource
win10v20210410
submitted
03/07/2021, 06:02

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General

Target
PURCHASE ORDER No.0207210.exe
Size 1.2MB
Sample210703-kvwcj2pcra
SHA256 7cf95c0b9a54fa67fcd82ab0dc3dddbbb3861b9c4111a12e628f0003b02e41d9
MD5 6461c0dcc4969ef037f598d9394f1747
SHA1 e7d320bbc229ac3503d40a43d91076ae9dda71b1
SHA512 526fd05c7243b06743ab6df6072e9154958251e6da39039a63b12bcaceca3329ea15b1e4f719f16127bf75076944d1b26c70d29e68e245d24d7eef76170c24bc
MD5 SHA1 SHA512

Score

10^/10

nanocore remcos mgc@$$$keylogger persistence rat spyware stealer trojan

Malware Config

Extracted

Family

remcos

Version

3.1.4 Pro

Botnet

MGC@$$$

mgc001.hopto.org:2930

Attributes

audio_folder
MicRecords
audio_path
%AppData%
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
install_path
%AppData%
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
keylog_path
%AppData%
mouse_option
false
mutex
Remcos-MBRADG
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
take_screenshot_title
notepad;solitaire;

Signatures

NanoCore
NanoCore is a remote access tool (RAT) with a variety of capabilities.
keylogger trojan stealer spyware nanocore
Remcos
Remcos is a closed-source remote control and surveillance software.
rat remcos

Executes dropped EXE 2 IoCs

pid	Process
1244	dhrgbw.pif
3668	RegSvcs.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run	dhrgbw.pif
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\WindowsUpdate = "c:\\07357609\\dhrgbw.pif c:\\07357609\\qahh.tct"	dhrgbw.pif

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1244 set thread context of 3668	1244	dhrgbw.pif	88

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1244	dhrgbw.pif
1244	dhrgbw.pif

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3668	RegSvcs.exe

Suspicious use of WriteProcessMemory 29 IoCs

description	pid	Process	procid_target
PID 3956 wrote to memory of 1244	3956	PURCHASE ORDER No.0207210.exe	75
PID 3956 wrote to memory of 1244	3956	PURCHASE ORDER No.0207210.exe	75
PID 3956 wrote to memory of 1244	3956	PURCHASE ORDER No.0207210.exe	75
PID 1244 wrote to memory of 1172	1244	dhrgbw.pif	80
PID 1244 wrote to memory of 1172	1244	dhrgbw.pif	80
PID 1244 wrote to memory of 1172	1244	dhrgbw.pif	80
PID 1244 wrote to memory of 3484	1244	dhrgbw.pif	81
PID 1244 wrote to memory of 3484	1244	dhrgbw.pif	81
PID 1244 wrote to memory of 3484	1244	dhrgbw.pif	81
PID 1244 wrote to memory of 3848	1244	dhrgbw.pif	83
PID 1244 wrote to memory of 3848	1244	dhrgbw.pif	83
PID 1244 wrote to memory of 3848	1244	dhrgbw.pif	83
PID 1244 wrote to memory of 2332	1244	dhrgbw.pif	84
PID 1244 wrote to memory of 2332	1244	dhrgbw.pif	84
PID 1244 wrote to memory of 2332	1244	dhrgbw.pif	84
PID 1244 wrote to memory of 640	1244	dhrgbw.pif	85
PID 1244 wrote to memory of 640	1244	dhrgbw.pif	85
PID 1244 wrote to memory of 640	1244	dhrgbw.pif	85
PID 1244 wrote to memory of 1232	1244	dhrgbw.pif	86
PID 1244 wrote to memory of 1232	1244	dhrgbw.pif	86
PID 1244 wrote to memory of 1232	1244	dhrgbw.pif	86
PID 1244 wrote to memory of 2216	1244	dhrgbw.pif	87
PID 1244 wrote to memory of 2216	1244	dhrgbw.pif	87
PID 1244 wrote to memory of 2216	1244	dhrgbw.pif	87
PID 1244 wrote to memory of 3668	1244	dhrgbw.pif	88
PID 1244 wrote to memory of 3668	1244	dhrgbw.pif	88
PID 1244 wrote to memory of 3668	1244	dhrgbw.pif	88
PID 1244 wrote to memory of 3668	1244	dhrgbw.pif	88
PID 1244 wrote to memory of 3668	1244	dhrgbw.pif	88

C:\Users\Admin\AppData\Local\Temp\PURCHASE ORDER No.0207210.exe
"C:\Users\Admin\AppData\Local\Temp\PURCHASE ORDER No.0207210.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:3956
- C:\07357609\dhrgbw.pif
  "C:\07357609\dhrgbw.pif" qahh.tct
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:1244
- - C:\Windows\SysWOW64\mshta.exe
    "C:\Windows\SysWOW64\mshta.exe"
    3⤵
    PID:1172
- - C:\Windows\SysWOW64\mshta.exe
    "C:\Windows\SysWOW64\mshta.exe"
    3⤵
    PID:3484
- - C:\Windows\SysWOW64\mshta.exe
    "C:\Windows\SysWOW64\mshta.exe"
    3⤵
    PID:3848
- - C:\Windows\SysWOW64\mshta.exe
    "C:\Windows\SysWOW64\mshta.exe"
    3⤵
    PID:2332
- - C:\Windows\SysWOW64\mshta.exe
    "C:\Windows\SysWOW64\mshta.exe"
    3⤵
    PID:640
- - C:\Windows\SysWOW64\mshta.exe
    "C:\Windows\SysWOW64\mshta.exe"
    3⤵
    PID:1232
- - C:\Windows\SysWOW64\mshta.exe
    "C:\Windows\SysWOW64\mshta.exe"
    3⤵
    PID:2216
- - C:\Users\Admin\AppData\Local\Temp\RegSvcs.exe
    "C:\Users\Admin\AppData\Local\Temp\RegSvcs.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetWindowsHookEx
    PID:3668

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/3668-126-0x00000000007A0000-0x0000000000CCF000-memory.dmp

Download

memory/3668-130-0x00000000007A0000-0x0000000000CCF000-memory.dmp

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