dcrat | 71becff3e0037cf61458f416ee026d4c6db0a25ffb2d42b6a0eecad381825cb8

Analysis

max time kernel
135s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20230220-en
resource tags

arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
submitted
09-06-2023 10:57

Target

71becff3e0037cf61458f416ee026d4c6db0a25ffb2d42b6a0eecad381825cb8.exe
Size

3.4MB
MD5

8136421aa9596cb02a6c30a99b376db5
SHA1

a4866f30925441944eb06e9540fd8740a7302b84
SHA256

71becff3e0037cf61458f416ee026d4c6db0a25ffb2d42b6a0eecad381825cb8
SHA512

a6b2fcb864ecc6b10a2a08373d12d8f59f16e9ca22b1b014c2326807a1bb90ab84e1a0b9afd637a408c179f9025eee28f017e35bf6543fb59e06a12c9860bf8c
SSDEEP

24576:0BgrBN6i/BEuM75fCJaBSDVdMYHl6I4H8ykD3A:yIWqgBSDAYHl4cykD3A

Score

10^/10

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

DCRat payload 1 IoCs

Detects payload of DCRat, commonly dropped by NSIS installers.

Processes:

resource	yara_rule
behavioral2/memory/1976-133-0x0000000000400000-0x00000000004D8000-memory.dmp	dcrat

Looks up external IP address via web service 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.

Processes:

flow ioc

22 ipinfo.io
23 ipinfo.io

flow	ioc
22	ipinfo.io
23	ipinfo.io

Suspicious use of SetThreadContext 1 IoCs

Processes:

71becff3e0037cf61458f416ee026d4c6db0a25ffb2d42b6a0eecad381825cb8.exe

description	pid	process	target process
PID 1672 set thread context of 1976	1672	71becff3e0037cf61458f416ee026d4c6db0a25ffb2d42b6a0eecad381825cb8.exe	InstallUtil.exe

Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

3620 1672 WerFault.exe 71becff3e0037cf61458f416ee026d4c6db0a25ffb2d42b6a0eecad381825cb8.exe

pid	pid_target	process	target process
3620	1672	WerFault.exe	71becff3e0037cf61458f416ee026d4c6db0a25ffb2d42b6a0eecad381825cb8.exe

Suspicious behavior: EnumeratesProcesses 15 IoCs

Processes:

InstallUtil.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

InstallUtil.exe

pid process

1976 InstallUtil.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

InstallUtil.exe

description pid process

Token: SeDebugPrivilege 1976 InstallUtil.exe

description	pid	process
Token: SeDebugPrivilege	1976	InstallUtil.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

71becff3e0037cf61458f416ee026d4c6db0a25ffb2d42b6a0eecad381825cb8.exe

description	pid	process	target process
PID 1672 wrote to memory of 1976	1672	71becff3e0037cf61458f416ee026d4c6db0a25ffb2d42b6a0eecad381825cb8.exe	InstallUtil.exe
PID 1672 wrote to memory of 1976	1672	71becff3e0037cf61458f416ee026d4c6db0a25ffb2d42b6a0eecad381825cb8.exe	InstallUtil.exe
PID 1672 wrote to memory of 1976	1672	71becff3e0037cf61458f416ee026d4c6db0a25ffb2d42b6a0eecad381825cb8.exe	InstallUtil.exe
PID 1672 wrote to memory of 1976	1672	71becff3e0037cf61458f416ee026d4c6db0a25ffb2d42b6a0eecad381825cb8.exe	InstallUtil.exe
PID 1672 wrote to memory of 1976	1672	71becff3e0037cf61458f416ee026d4c6db0a25ffb2d42b6a0eecad381825cb8.exe	InstallUtil.exe
PID 1672 wrote to memory of 1976	1672	71becff3e0037cf61458f416ee026d4c6db0a25ffb2d42b6a0eecad381825cb8.exe	InstallUtil.exe
PID 1672 wrote to memory of 1976	1672	71becff3e0037cf61458f416ee026d4c6db0a25ffb2d42b6a0eecad381825cb8.exe	InstallUtil.exe
PID 1672 wrote to memory of 1976	1672	71becff3e0037cf61458f416ee026d4c6db0a25ffb2d42b6a0eecad381825cb8.exe	InstallUtil.exe

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1672 -s 448
2⤵
- Program crash
PID:3620

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 1672 -ip 1672
1⤵
PID:744

memory/1976-133-0x0000000000400000-0x00000000004D8000-memory.dmp

Filesize
864KB

Download
memory/1976-134-0x0000000006400000-0x00000000069A4000-memory.dmp

Filesize
5.6MB

Download
memory/1976-135-0x0000000005870000-0x0000000005880000-memory.dmp

Filesize
64KB

Download
memory/1976-136-0x0000000006190000-0x00000000061F6000-memory.dmp

Filesize
408KB

Download
memory/1976-137-0x0000000006300000-0x0000000006350000-memory.dmp

Filesize
320KB

Download
memory/1976-138-0x00000000069B0000-0x0000000006A42000-memory.dmp

Filesize
584KB

Download
memory/1976-139-0x0000000005870000-0x0000000005880000-memory.dmp

Filesize
64KB

Download
memory/1976-140-0x0000000005870000-0x0000000005880000-memory.dmp

Filesize
64KB

Download
memory/1976-141-0x00000000073A0000-0x0000000007562000-memory.dmp

Filesize
1.8MB

Download
memory/1976-142-0x0000000005870000-0x0000000005880000-memory.dmp

Filesize
64KB

Download
memory/1976-145-0x0000000007DE0000-0x000000000830C000-memory.dmp

Filesize
5.2MB

Download
memory/1976-144-0x0000000005870000-0x0000000005880000-memory.dmp

Filesize
64KB

Download
memory/1976-143-0x0000000005870000-0x0000000005880000-memory.dmp

Filesize
64KB

Download