darkvnc | 5a5eed8af89a4796322c80832db0389085bee3d7352c19e094c2aefb861363f8

General

Target

usfive_20210702-221526(1).exe
Size

477KB
MD5

5e5889d84bf78a8fb99dc88107a5745a
SHA1

0865c8e5d321fa815b08790646f1abc1a260e329
SHA256

5a5eed8af89a4796322c80832db0389085bee3d7352c19e094c2aefb861363f8
SHA512

6fd715bdddc63f92b649c47805c5081f67b9b4118c509d52106bf33e94354abd0d6a408cdec30f92bcc116eeea4a07d6b7fd55d62df744071dfbc3b829cf058f

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 2408 created 1096	2408	WerFault.exe	77

DarkVNC Payload 3 IoCs

rat

resource	yara_rule
behavioral2/memory/1096-129-0x0000000000400000-0x0000000000612000-memory.dmp	darkvnc
behavioral2/memory/1096-128-0x0000000000B30000-0x0000000000BB8000-memory.dmp	darkvnc
behavioral2/memory/3264-131-0x000001EC01390000-0x000001EC0145A000-memory.dmp	darkvnc

Downloads MZ/PE file

Executes dropped EXE 1 IoCs

pid	Process
1096	e5aJkF5jMv.exe

Loads dropped DLL 6 IoCs

pid	Process
4064	usfive_20210702-221526(1).exe
4064	usfive_20210702-221526(1).exe
4064	usfive_20210702-221526(1).exe
4064	usfive_20210702-221526(1).exe
4064	usfive_20210702-221526(1).exe
4064	usfive_20210702-221526(1).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 1096 set thread context of 3264	1096	e5aJkF5jMv.exe	81

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
2408	1096	WerFault.exe	77

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
2152	timeout.exe

Suspicious behavior: EnumeratesProcesses 15 IoCs

pid	Process
2408	WerFault.exe
2408	WerFault.exe
2408	WerFault.exe
2408	WerFault.exe
2408	WerFault.exe
2408	WerFault.exe
2408	WerFault.exe
2408	WerFault.exe
2408	WerFault.exe
2408	WerFault.exe
2408	WerFault.exe
2408	WerFault.exe
2408	WerFault.exe
2408	WerFault.exe
2408	WerFault.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
1096	e5aJkF5jMv.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeRestorePrivilege	2408	WerFault.exe
Token: SeBackupPrivilege	2408	WerFault.exe
Token: SeDebugPrivilege	2408	WerFault.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 4064 wrote to memory of 1096	4064	usfive_20210702-221526(1).exe	77
PID 4064 wrote to memory of 1096	4064	usfive_20210702-221526(1).exe	77
PID 4064 wrote to memory of 1096	4064	usfive_20210702-221526(1).exe	77
PID 4064 wrote to memory of 3940	4064	usfive_20210702-221526(1).exe	78
PID 4064 wrote to memory of 3940	4064	usfive_20210702-221526(1).exe	78
PID 4064 wrote to memory of 3940	4064	usfive_20210702-221526(1).exe	78
PID 3940 wrote to memory of 2152	3940	cmd.exe	80
PID 3940 wrote to memory of 2152	3940	cmd.exe	80
PID 3940 wrote to memory of 2152	3940	cmd.exe	80
PID 1096 wrote to memory of 3264	1096	e5aJkF5jMv.exe	81
PID 1096 wrote to memory of 3264	1096	e5aJkF5jMv.exe	81
PID 1096 wrote to memory of 3264	1096	e5aJkF5jMv.exe	81
PID 1096 wrote to memory of 3264	1096	e5aJkF5jMv.exe	81
PID 1096 wrote to memory of 3264	1096	e5aJkF5jMv.exe	81

C:\Users\Admin\AppData\Local\Temp\usfive_20210702-221526(1).exe
"C:\Users\Admin\AppData\Local\Temp\usfive_20210702-221526(1).exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:4064
- C:\Users\Admin\AppData\Local\Temp\e5aJkF5jMv.exe
  "C:\Users\Admin\AppData\Local\Temp\e5aJkF5jMv.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of WriteProcessMemory
  PID:1096
- - C:\Windows\system32\WerFault.exe
    C:\Windows\system32\WerFault.exe
    3⤵
    PID:3264
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1096 -s 484
    3⤵
    - Suspicious use of NtCreateProcessExOtherParentProcess
    - Program crash
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2408
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /C timeout /T 10 /NOBREAK > Nul & Del /f /q "C:\Users\Admin\AppData\Local\Temp\usfive_20210702-221526(1).exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3940
- - C:\Windows\SysWOW64\timeout.exe
    timeout /T 10 /NOBREAK
    3⤵
    - Delays execution with timeout.exe
    PID:2152

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/1096-129-0x0000000000400000-0x0000000000612000-memory.dmp

Filesize
2.1MB

Download
memory/1096-128-0x0000000000B30000-0x0000000000BB8000-memory.dmp

Filesize
544KB

Download
memory/3264-130-0x000001EC010C0000-0x000001EC010E9000-memory.dmp

Filesize
164KB

Download
memory/3264-131-0x000001EC01390000-0x000001EC0145A000-memory.dmp

Filesize
808KB

Download
memory/4064-114-0x00000000008D0000-0x0000000000961000-memory.dmp

Filesize
580KB

Download
memory/4064-115-0x0000000000400000-0x0000000000622000-memory.dmp

Filesize
2.1MB

Download

Analysis

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