darkvnc | 7c5200cb3685f3ba1d2a3c4bbf7b92db3a004b2443843f1b6bac425d72a5733c

General

Target

usfive_20210808-181522.exe
Size

511KB
MD5

c516b8434e20fba2c5ce93414bdd06a6
SHA1

1fd7e3712d1d2bd96997d18280fbf0afe4569097
SHA256

7c5200cb3685f3ba1d2a3c4bbf7b92db3a004b2443843f1b6bac425d72a5733c
SHA512

7f13118474dd26dd5eba89cadf8e169ac15f5a488154dffbcaadb9daa29554a17ae895d5a2bc89499a35887f27beb82657e5b12fad066b1c9acade362de08e5c

Score

10^/10

darkvnc raccoon c58b0b3f1f90ad7552aaf8e84180b7580f397001 discovery rat spyware stealer

Malware Config

Extracted

Family

raccoon

Botnet

c58b0b3f1f90ad7552aaf8e84180b7580f397001

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

Raccoon Stealer Payload 2 IoCs

resource	yara_rule
behavioral2/memory/652-114-0x0000000004A20000-0x0000000004AB3000-memory.dmp	family_raccoon
behavioral2/memory/652-115-0x0000000000400000-0x0000000002CB5000-memory.dmp	family_raccoon

Suspicious use of NtCreateProcessExOtherParentProcess 1 IoCs

description	pid	Process	procid_target
PID 2308 created 1628	2308	WerFault.exe	77

DarkVNC Payload 3 IoCs

rat

resource	yara_rule
behavioral2/memory/1628-127-0x0000000004980000-0x0000000004A08000-memory.dmp	darkvnc
behavioral2/memory/1628-130-0x0000000000400000-0x0000000002CA6000-memory.dmp	darkvnc
behavioral2/memory/2172-132-0x0000024B549F0000-0x0000024B54B99000-memory.dmp	darkvnc

Downloads MZ/PE file

Executes dropped EXE 1 IoCs

pid	Process
1628	g2Tc1nQPF7.exe

Loads dropped DLL 6 IoCs

pid	Process
652	usfive_20210808-181522.exe
652	usfive_20210808-181522.exe
652	usfive_20210808-181522.exe
652	usfive_20210808-181522.exe
652	usfive_20210808-181522.exe
652	usfive_20210808-181522.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 1628 set thread context of 2172	1628	g2Tc1nQPF7.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
2308	1628	WerFault.exe	77

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
1308	timeout.exe

Suspicious behavior: EnumeratesProcesses 14 IoCs

pid	Process
2308	WerFault.exe
2308	WerFault.exe
2308	WerFault.exe
2308	WerFault.exe
2308	WerFault.exe
2308	WerFault.exe
2308	WerFault.exe
2308	WerFault.exe
2308	WerFault.exe
2308	WerFault.exe
2308	WerFault.exe
2308	WerFault.exe
2308	WerFault.exe
2308	WerFault.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
1628	g2Tc1nQPF7.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeRestorePrivilege	2308	WerFault.exe
Token: SeBackupPrivilege	2308	WerFault.exe
Token: SeDebugPrivilege	2308	WerFault.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 652 wrote to memory of 1628	652	usfive_20210808-181522.exe	77
PID 652 wrote to memory of 1628	652	usfive_20210808-181522.exe	77
PID 652 wrote to memory of 1628	652	usfive_20210808-181522.exe	77
PID 652 wrote to memory of 2796	652	usfive_20210808-181522.exe	78
PID 652 wrote to memory of 2796	652	usfive_20210808-181522.exe	78
PID 652 wrote to memory of 2796	652	usfive_20210808-181522.exe	78
PID 2796 wrote to memory of 1308	2796	cmd.exe	81
PID 2796 wrote to memory of 1308	2796	cmd.exe	81
PID 2796 wrote to memory of 1308	2796	cmd.exe	81
PID 1628 wrote to memory of 2172	1628	g2Tc1nQPF7.exe	82
PID 1628 wrote to memory of 2172	1628	g2Tc1nQPF7.exe	82
PID 1628 wrote to memory of 2172	1628	g2Tc1nQPF7.exe	82
PID 1628 wrote to memory of 2172	1628	g2Tc1nQPF7.exe	82
PID 1628 wrote to memory of 2172	1628	g2Tc1nQPF7.exe	82

C:\Users\Admin\AppData\Local\Temp\usfive_20210808-181522.exe
"C:\Users\Admin\AppData\Local\Temp\usfive_20210808-181522.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:652
- C:\Users\Admin\AppData\Local\Temp\g2Tc1nQPF7.exe
  "C:\Users\Admin\AppData\Local\Temp\g2Tc1nQPF7.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of WriteProcessMemory
  PID:1628
- - C:\Windows\system32\WerFault.exe
    C:\Windows\system32\WerFault.exe
    3⤵
    PID:2172
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1628 -s 520
    3⤵
    - Suspicious use of NtCreateProcessExOtherParentProcess
    - Program crash
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2308
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /C timeout /T 10 /NOBREAK > Nul & Del /f /q "C:\Users\Admin\AppData\Local\Temp\usfive_20210808-181522.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2796
- - C:\Windows\SysWOW64\timeout.exe
    timeout /T 10 /NOBREAK
    3⤵
    - Delays execution with timeout.exe
    PID:1308

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/652-115-0x0000000000400000-0x0000000002CB5000-memory.dmp

Filesize
40.7MB

Download
memory/652-114-0x0000000004A20000-0x0000000004AB3000-memory.dmp

Filesize
588KB

Download
memory/1628-127-0x0000000004980000-0x0000000004A08000-memory.dmp

Filesize
544KB

Download
memory/1628-130-0x0000000000400000-0x0000000002CA6000-memory.dmp

Filesize
40.6MB

Download
memory/2172-131-0x0000024B54810000-0x0000024B54811000-memory.dmp

Filesize
4KB

Download
memory/2172-132-0x0000024B549F0000-0x0000024B54B99000-memory.dmp

Filesize
1.7MB

Download

Analysis

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