purecrypter | 9710c717d29c3939520a177dc44aa08d7098b70f3650c37f25f260f677542306

Analysis

max time kernel
91s
max time network
144s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
06-11-2024 14:20

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General

Target

d56f262888e77a5de910970fdc1fa46fef7fc527da135926e994affa293ebde6.exe
Size

898KB
MD5

efbdd6926c4cb453abc717966d17247b
SHA1

4d5527e2b261b908905c857776cf625b12b3959c
SHA256

d56f262888e77a5de910970fdc1fa46fef7fc527da135926e994affa293ebde6
SHA512

d64ebc2141a1924c50589d349914471192a0be23ed436e98ea5a9c6c5c813e6b41b18979ebc6b0ca360042396fc31d656677d283b7b0a6a7bd6ff9e5f536f68b
SSDEEP

6144:2ahOEYGnXi1o+ragfy6QRTsU3S7OZb9a:2icGXko+ragfAoUC7OZ8

Score

10^/10

purecrypter discovery downloader loader persistence

Malware Config

Extracted

Family

purecrypter

https://buffetdetalhes.com/wp-admin/images/css/marina/bo/Vqhpwhiml.dll

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
2768	ifmedianov.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\\\""	d56f262888e77a5de910970fdc1fa46fef7fc527da135926e994affa293ebde6.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	ifmedianov.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2768	ifmedianov.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 5052 wrote to memory of 2768	5052	d56f262888e77a5de910970fdc1fa46fef7fc527da135926e994affa293ebde6.exe	86
PID 5052 wrote to memory of 2768	5052	d56f262888e77a5de910970fdc1fa46fef7fc527da135926e994affa293ebde6.exe	86
PID 5052 wrote to memory of 2768	5052	d56f262888e77a5de910970fdc1fa46fef7fc527da135926e994affa293ebde6.exe	86

C:\Users\Admin\AppData\Local\Temp\d56f262888e77a5de910970fdc1fa46fef7fc527da135926e994affa293ebde6.exe
"C:\Users\Admin\AppData\Local\Temp\d56f262888e77a5de910970fdc1fa46fef7fc527da135926e994affa293ebde6.exe"
1⤵
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:5052
- C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\ifmedianov.exe
  C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\ifmedianov.exe
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:2768

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/2768-5-0x0000000074DBE000-0x0000000074DBF000-memory.dmp

Filesize
4KB

Download
memory/2768-6-0x0000000000410000-0x0000000000434000-memory.dmp

Filesize
144KB

Download
memory/2768-7-0x00000000053E0000-0x0000000005984000-memory.dmp

Filesize
5.6MB

Download
memory/2768-8-0x0000000004ED0000-0x0000000004F62000-memory.dmp

Filesize
584KB

Download
memory/2768-9-0x0000000074DB0000-0x0000000075560000-memory.dmp

Filesize
7.7MB

Download
memory/2768-10-0x0000000004E40000-0x0000000004E4A000-memory.dmp

Filesize
40KB

Download
memory/2768-11-0x0000000074DBE000-0x0000000074DBF000-memory.dmp

Filesize
4KB

Download
memory/2768-12-0x0000000074DB0000-0x0000000075560000-memory.dmp

Filesize
7.7MB

Download
memory/2768-13-0x0000000074DB0000-0x0000000075560000-memory.dmp

Filesize
7.7MB

Download
memory/2768-14-0x0000000074DB0000-0x0000000075560000-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