purecrypter | 5016ba92afac1c2b2a2a6b17a09406869bd6f58cfe680f25030af1a1ba1c29a2

Analysis

max time kernel
121s
max time network
122s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
01-10-2024 15:02

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General

Target

origin.bin.exe
Size

25KB
MD5

0b8bb8ed90799aa967281f96d1b3a75d
SHA1

f083724cffd51f9bd9afe08419598c9672cf8caf
SHA256

5016ba92afac1c2b2a2a6b17a09406869bd6f58cfe680f25030af1a1ba1c29a2
SHA512

9571b38bc86971adeb6a0f18e6bdcdcb704e00a845bd5c8f62e3d4237789221e3fb8962a6ae5d7860fbf3ec6a1ba7a7ec263cf1f343a50704ed0620809f27e38
SSDEEP

192:YLj1DESCjSLuZmff5XLO4gZYQHbEvNesGhv:YZE5WLuoff5XLOZYCgvNesc

Score

10^/10

purecrypter discovery downloader loader

Malware Config

Extracted

Family

purecrypter

http://savory.com.bd/sav/Ztvfo.png

Signatures

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

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1704	2160	WerFault.exe	29

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	origin.bin.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2160	origin.bin.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2160 wrote to memory of 1704	2160	origin.bin.exe	31
PID 2160 wrote to memory of 1704	2160	origin.bin.exe	31
PID 2160 wrote to memory of 1704	2160	origin.bin.exe	31
PID 2160 wrote to memory of 1704	2160	origin.bin.exe	31

C:\Users\Admin\AppData\Local\Temp\origin.bin.exe
"C:\Users\Admin\AppData\Local\Temp\origin.bin.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2160
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2160 -s 1136
  2⤵
  - Program crash
  PID:1704

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/2160-0-0x000000007403E000-0x000000007403F000-memory.dmp

Filesize
4KB

Download
memory/2160-1-0x00000000000A0000-0x00000000000AC000-memory.dmp

Filesize
48KB

Download
memory/2160-2-0x0000000074030000-0x000000007471E000-memory.dmp

Filesize
6.9MB

Download
memory/2160-3-0x0000000074030000-0x000000007471E000-memory.dmp

Filesize
6.9MB

Download
memory/2160-4-0x0000000074030000-0x000000007471E000-memory.dmp

Filesize
6.9MB

Download