darkvnc | d5f30506b8c1e90fd04c2ddf1d8c32a5d1a0cec4679e22948d4f846d25a177a9

General

Target

usfive_20210702-052459.exe
Size

517KB
MD5

4d96c35ea7bb6f4239c9382771a23a39
SHA1

f3497cfa1d27350ec7a6827f94d5f1e1b73f91e8
SHA256

d5f30506b8c1e90fd04c2ddf1d8c32a5d1a0cec4679e22948d4f846d25a177a9
SHA512

038d0a3463551b14841f368ed0f2f85d2a62fdc344720d7cac25655e4d57035d7fe36910b26e06cb71ccfc516e89ddb316eeabdc0834bf9813c48add0849c562

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 2164 created 780	2164	WerFault.exe	78

DarkVNC Payload 3 IoCs

rat

resource	yara_rule
behavioral2/memory/780-129-0x0000000000400000-0x0000000000612000-memory.dmp	darkvnc
behavioral2/memory/2416-131-0x0000018B1BF30000-0x0000018B1BFFA000-memory.dmp	darkvnc
behavioral2/memory/780-128-0x0000000000B50000-0x0000000000BD8000-memory.dmp	darkvnc

Downloads MZ/PE file

Executes dropped EXE 1 IoCs

pid	Process
780	1Sh1veacT7.exe

Loads dropped DLL 6 IoCs

pid	Process
4048	usfive_20210702-052459.exe
4048	usfive_20210702-052459.exe
4048	usfive_20210702-052459.exe
4048	usfive_20210702-052459.exe
4048	usfive_20210702-052459.exe
4048	usfive_20210702-052459.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 780 set thread context of 2416	780	1Sh1veacT7.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
2164	780	WerFault.exe	78

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
1420	timeout.exe

Suspicious behavior: EnumeratesProcesses 14 IoCs

pid	Process
2164	WerFault.exe
2164	WerFault.exe
2164	WerFault.exe
2164	WerFault.exe
2164	WerFault.exe
2164	WerFault.exe
2164	WerFault.exe
2164	WerFault.exe
2164	WerFault.exe
2164	WerFault.exe
2164	WerFault.exe
2164	WerFault.exe
2164	WerFault.exe
2164	WerFault.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
780	1Sh1veacT7.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeRestorePrivilege	2164	WerFault.exe
Token: SeBackupPrivilege	2164	WerFault.exe
Token: SeDebugPrivilege	2164	WerFault.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 4048 wrote to memory of 780	4048	usfive_20210702-052459.exe	78
PID 4048 wrote to memory of 780	4048	usfive_20210702-052459.exe	78
PID 4048 wrote to memory of 780	4048	usfive_20210702-052459.exe	78
PID 4048 wrote to memory of 3900	4048	usfive_20210702-052459.exe	79
PID 4048 wrote to memory of 3900	4048	usfive_20210702-052459.exe	79
PID 4048 wrote to memory of 3900	4048	usfive_20210702-052459.exe	79
PID 3900 wrote to memory of 1420	3900	cmd.exe	81
PID 3900 wrote to memory of 1420	3900	cmd.exe	81
PID 3900 wrote to memory of 1420	3900	cmd.exe	81
PID 780 wrote to memory of 2416	780	1Sh1veacT7.exe	82
PID 780 wrote to memory of 2416	780	1Sh1veacT7.exe	82
PID 780 wrote to memory of 2416	780	1Sh1veacT7.exe	82
PID 780 wrote to memory of 2416	780	1Sh1veacT7.exe	82
PID 780 wrote to memory of 2416	780	1Sh1veacT7.exe	82

C:\Users\Admin\AppData\Local\Temp\usfive_20210702-052459.exe
"C:\Users\Admin\AppData\Local\Temp\usfive_20210702-052459.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:4048
- C:\Users\Admin\AppData\Local\Temp\1Sh1veacT7.exe
  "C:\Users\Admin\AppData\Local\Temp\1Sh1veacT7.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of WriteProcessMemory
  PID:780
- - C:\Windows\system32\WerFault.exe
    C:\Windows\system32\WerFault.exe
    3⤵
    PID:2416
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 780 -s 492
    3⤵
    - Suspicious use of NtCreateProcessExOtherParentProcess
    - Program crash
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2164
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /C timeout /T 10 /NOBREAK > Nul & Del /f /q "C:\Users\Admin\AppData\Local\Temp\usfive_20210702-052459.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3900
- - C:\Windows\SysWOW64\timeout.exe
    timeout /T 10 /NOBREAK
    3⤵
    - Delays execution with timeout.exe
    PID:1420

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/780-129-0x0000000000400000-0x0000000000612000-memory.dmp

Filesize
2.1MB

Download
memory/780-128-0x0000000000B50000-0x0000000000BD8000-memory.dmp

Filesize
544KB

Download
memory/2416-130-0x0000018B1BD90000-0x0000018B1BDB9000-memory.dmp

Filesize
164KB

Download
memory/2416-131-0x0000018B1BF30000-0x0000018B1BFFA000-memory.dmp

Filesize
808KB

Download
memory/4048-114-0x0000000004920000-0x00000000049B1000-memory.dmp

Filesize
580KB

Download
memory/4048-115-0x0000000000400000-0x0000000004410000-memory.dmp

Filesize
64.1MB

Download

Analysis

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