purecrypter | 3d7b1276251e4f31fe0777a4f7f53073a65db3cb7678f9a0e229fbad8eac0599

Analysis

max time kernel
153s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
25-12-2024 15:09

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General

Target

MetaMansionSetup.exe
Size

668.1MB
MD5

52172aa6b69b63f2d1ad54aa7f6361f5
SHA1

1967368c2a958bd1ff4dc2a0a861d9276f42cfe5
SHA256

67d3921c2f43568804c9d02dfc8cf36470c66b4751179549d487d663daf35d5f
SHA512

bbc3fc53a43eebdce1078f8117935b109f45761a504e26d33498ff8a71beb075132ca6186f7b8057f31210d9a680d819a643baca1b97012e0282f267680a8964
SSDEEP

1536:BI47GyTGCwiSnmQUt0LB1cIs5gsoG+sjrPxw:BvGyYiSDnt1ch5mG+svxw

Score

10^/10

purecrypter discovery downloader loader persistence

Malware Config

Extracted

Family

purecrypter

https://www.filifilm.com.br/images/colors/purple/Lbbtd.jpeg

Signatures

PureCrypter
PureCrypter is a .NET malware loader first seen in early 2021.
loader downloader purecrypter
Purecrypter family
purecrypter

Executes dropped EXE 1 IoCs

pid	Process
1128	SETUP_~1.EXE

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\wextract_cleanup0 = "rundll32.exe C:\\Windows\\system32\\advpack.dll,DelNodeRunDLL32 \"C:\\Users\\Admin\\AppData\\Local\\Temp\\IXP000.TMP\\\""	MetaMansionSetup.exe

System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	SETUP_~1.EXE

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1128	SETUP_~1.EXE

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2596 wrote to memory of 1128	2596	MetaMansionSetup.exe	82
PID 2596 wrote to memory of 1128	2596	MetaMansionSetup.exe	82
PID 2596 wrote to memory of 1128	2596	MetaMansionSetup.exe	82

C:\Users\Admin\AppData\Local\Temp\MetaMansionSetup.exe
"C:\Users\Admin\AppData\Local\Temp\MetaMansionSetup.exe"
1⤵
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:2596
- C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\SETUP_~1.EXE
  C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\SETUP_~1.EXE
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:1128

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/1128-5-0x00000000747DE000-0x00000000747DF000-memory.dmp

Filesize
4KB

Download
memory/1128-6-0x0000000000420000-0x0000000000428000-memory.dmp

Filesize
32KB

Download
memory/1128-7-0x00000000053C0000-0x0000000005964000-memory.dmp

Filesize
5.6MB

Download
memory/1128-8-0x0000000004EB0000-0x0000000004F42000-memory.dmp

Filesize
584KB

Download
memory/1128-9-0x0000000004E30000-0x0000000004E3A000-memory.dmp

Filesize
40KB

Download
memory/1128-10-0x00000000747D0000-0x0000000074F80000-memory.dmp

Filesize
7.7MB

Download
memory/1128-11-0x00000000747DE000-0x00000000747DF000-memory.dmp

Filesize
4KB

Download
memory/1128-12-0x00000000747D0000-0x0000000074F80000-memory.dmp

Filesize
7.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads