dcrat | e97b00664e3ace00f7526576e3afdb4b3688b294903fe503700a6770e58b6693

Analysis

max time kernel
94s
max time network
96s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
04-12-2024 04:06

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General

Target

e97b00664e3ace00f7526576e3afdb4b3688b294903fe503700a6770e58b6693.exe
Size

427KB
MD5

4ca46cadce6ab6dc7aa268e158e78012
SHA1

ee012afd93326366806ba7badfc2d078fe168879
SHA256

e97b00664e3ace00f7526576e3afdb4b3688b294903fe503700a6770e58b6693
SHA512

495af2f8ffad51ce2f4ede111cc9260f05ea0a02638adf13c92e9679306f50b637dc8c83516443b5ea610495dadce11d8ac8cdc966e1b7d5e1cd6ba7e4630e43
SSDEEP

6144:OAFvyPmv34F6CYlaAD3l0HkffT+DOsrTyFyiYy73KywNzZ:OAk+4HYlti8qDZyyTy73KymZ

Score

10^/10

dcrat infostealer rat

Malware Config

Signatures

DcRat
DarkCrystal(DC) is a new .NET RAT active since June 2019 capable of loading additional plugins.
rat infostealer dcrat
Dcrat family
dcrat

DCRat payload 2 IoCs

rat

resource	yara_rule
behavioral2/files/0x0007000000023c94-19.dat	family_dcrat_v2
behavioral2/memory/940-22-0x0000000000540000-0x0000000000E96000-memory.dmp	family_dcrat_v2

Downloads MZ/PE file

Executes dropped EXE 1 IoCs

pid	Process
940	MsBrowserreviewDriverPerf.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service

T1102

flow	ioc
13	raw.githubusercontent.com
15	raw.githubusercontent.com

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
940	MsBrowserreviewDriverPerf.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 4280 wrote to memory of 940	4280	e97b00664e3ace00f7526576e3afdb4b3688b294903fe503700a6770e58b6693.exe	84
PID 4280 wrote to memory of 940	4280	e97b00664e3ace00f7526576e3afdb4b3688b294903fe503700a6770e58b6693.exe	84

C:\Users\Admin\AppData\Local\Temp\e97b00664e3ace00f7526576e3afdb4b3688b294903fe503700a6770e58b6693.exe
"C:\Users\Admin\AppData\Local\Temp\e97b00664e3ace00f7526576e3afdb4b3688b294903fe503700a6770e58b6693.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:4280
- C:\Windows\Temp\MsBrowserreviewDriverPerf.exe
  C:\Windows\Temp\MsBrowserreviewDriverPerf.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  PID:940

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Web Service

T1102

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\Temp\MsBrowserreviewDriverPerf.exe

Filesize
6.2MB

MD5
0835aac5054b99b000b6d51141bb54e6

SHA1
504731f62bd503bf14557d9203202179c102289a

SHA256
e93af24c6a6362cb832dfca5c6ea2f3fc84dd96b451f8fd9738b8f7f880e9f8c

SHA512
7608a81d21302e0544d86309c17c5780ce4cd74e2c163134cfd65c16d91f71a58bb7260890e745978ce1391b04b74d5ce66ac14527d485a9b069a2499df29f0e

Download Submit
memory/940-21-0x00007FFE6CB73000-0x00007FFE6CB75000-memory.dmp

Filesize
8KB

Download
memory/940-22-0x0000000000540000-0x0000000000E96000-memory.dmp

Filesize
9.3MB

Download
memory/940-23-0x00007FFE6CB70000-0x00007FFE6D631000-memory.dmp

Filesize
10.8MB

Download
memory/940-24-0x0000000002DE0000-0x0000000002DE1000-memory.dmp

Filesize
4KB

Download
memory/940-26-0x00007FFE6CB70000-0x00007FFE6D631000-memory.dmp

Filesize
10.8MB

Download