darkvnc | 52360c0e4a8a0b15142e84efc054178f40b2ed0229a851cff5dfc643497a308a

General

Target

usfive_20210702-192138.exe
Size

478KB
MD5

a72fbbe3a7d5a04db51f223d506f03ec
SHA1

eff774728ed867c29a48deeac1a3b68462b303ed
SHA256

52360c0e4a8a0b15142e84efc054178f40b2ed0229a851cff5dfc643497a308a
SHA512

51eecb7d12094122e6bcd19ad0d65dadd0af98f619df84422348bc993afc7342a7f59d345d67de793d130e154b71ca781df95c80d2aec727fbc1f369bf9ee01d

Score

10^/10

darkvnc raccoon 7ea5512058d479def2eeb58bd2231423ad2fdf37 discovery rat spyware stealer

Malware Config

Extracted

Family

raccoon

Botnet

7ea5512058d479def2eeb58bd2231423ad2fdf37

Attributes

url4cnc
https://telete.in/h_electricryptors2

rc4.plain

Signatures

DarkVNC
DarkVNC is a malicious version of the famous VNC software.
rat darkvnc
Raccoon
Simple but powerful infostealer which was very active in 2019.
stealer raccoon

Suspicious use of NtCreateProcessExOtherParentProcess 1 IoCs

description	pid	Process	procid_target
PID 3256 created 3500	3256	WerFault.exe	78

DarkVNC Payload 3 IoCs

rat

resource	yara_rule
behavioral2/memory/3500-127-0x0000000000B30000-0x0000000000BB8000-memory.dmp	darkvnc
behavioral2/memory/3500-128-0x0000000000400000-0x0000000000612000-memory.dmp	darkvnc
behavioral2/memory/4016-132-0x0000027470110000-0x0000027470409000-memory.dmp	darkvnc

Downloads MZ/PE file

Executes dropped EXE 1 IoCs

pid	Process
3500	sh5RgphgtP.exe

Loads dropped DLL 6 IoCs

pid	Process
912	usfive_20210702-192138.exe
912	usfive_20210702-192138.exe
912	usfive_20210702-192138.exe
912	usfive_20210702-192138.exe
912	usfive_20210702-192138.exe
912	usfive_20210702-192138.exe

Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3500 set thread context of 4016	3500	sh5RgphgtP.exe	82

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

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3256	3500	WerFault.exe	78

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
3860	timeout.exe

Suspicious behavior: EnumeratesProcesses 15 IoCs

pid	Process
3256	WerFault.exe
3256	WerFault.exe
3256	WerFault.exe
3256	WerFault.exe
3256	WerFault.exe
3256	WerFault.exe
3256	WerFault.exe
3256	WerFault.exe
3256	WerFault.exe
3256	WerFault.exe
3256	WerFault.exe
3256	WerFault.exe
3256	WerFault.exe
3256	WerFault.exe
3256	WerFault.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
3500	sh5RgphgtP.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeRestorePrivilege	3256	WerFault.exe
Token: SeBackupPrivilege	3256	WerFault.exe
Token: SeDebugPrivilege	3256	WerFault.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 912 wrote to memory of 3500	912	usfive_20210702-192138.exe	78
PID 912 wrote to memory of 3500	912	usfive_20210702-192138.exe	78
PID 912 wrote to memory of 3500	912	usfive_20210702-192138.exe	78
PID 912 wrote to memory of 2452	912	usfive_20210702-192138.exe	79
PID 912 wrote to memory of 2452	912	usfive_20210702-192138.exe	79
PID 912 wrote to memory of 2452	912	usfive_20210702-192138.exe	79
PID 2452 wrote to memory of 3860	2452	cmd.exe	81
PID 2452 wrote to memory of 3860	2452	cmd.exe	81
PID 2452 wrote to memory of 3860	2452	cmd.exe	81
PID 3500 wrote to memory of 4016	3500	sh5RgphgtP.exe	82
PID 3500 wrote to memory of 4016	3500	sh5RgphgtP.exe	82
PID 3500 wrote to memory of 4016	3500	sh5RgphgtP.exe	82
PID 3500 wrote to memory of 4016	3500	sh5RgphgtP.exe	82
PID 3500 wrote to memory of 4016	3500	sh5RgphgtP.exe	82

C:\Users\Admin\AppData\Local\Temp\usfive_20210702-192138.exe
"C:\Users\Admin\AppData\Local\Temp\usfive_20210702-192138.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:912
- C:\Users\Admin\AppData\Local\Temp\sh5RgphgtP.exe
  "C:\Users\Admin\AppData\Local\Temp\sh5RgphgtP.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of WriteProcessMemory
  PID:3500
- - C:\Windows\system32\WerFault.exe
    C:\Windows\system32\WerFault.exe
    3⤵
    PID:4016
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 3500 -s 480
    3⤵
    - Suspicious use of NtCreateProcessExOtherParentProcess
    - Program crash
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:3256
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /C timeout /T 10 /NOBREAK > Nul & Del /f /q "C:\Users\Admin\AppData\Local\Temp\usfive_20210702-192138.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2452
- - C:\Windows\SysWOW64\timeout.exe
    timeout /T 10 /NOBREAK
    3⤵
    - Delays execution with timeout.exe
    PID:3860

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

2

T1081

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Data from Local System

2

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/912-115-0x0000000000400000-0x0000000000622000-memory.dmp

Filesize
2.1MB

Download
memory/912-114-0x0000000000A90000-0x0000000000B21000-memory.dmp

Filesize
580KB

Download
memory/3500-127-0x0000000000B30000-0x0000000000BB8000-memory.dmp

Filesize
544KB

Download
memory/3500-128-0x0000000000400000-0x0000000000612000-memory.dmp

Filesize
2.1MB

Download
memory/4016-131-0x000002746FFC0000-0x000002746FFE9000-memory.dmp

Filesize
164KB

Download
memory/4016-132-0x0000027470110000-0x0000027470409000-memory.dmp

Filesize
3.0MB

Download

Analysis

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