purecrypter | 5b0f0781ae9b30699041c613663325c0ca57b525b26d4a8466c7efbfb949e2f6

Analysis

max time kernel
91s
max time network
26s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
21-12-2024 19:08

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General

Target

Details_01.exe
Size

79KB
MD5

ba11b96ba05febaedaec9dfb0c5b074b
SHA1

777b6a74a52423399e14c2471babba92b2322d60
SHA256

8015d350bd307f19d0711e361578ba72ccb1241c648d6ac0b03f3422b1dc00bd
SHA512

299596fdb27a6fd651eae8f6e5aaae5591db1d39dd291f2d8805525e6fbb05de791a49aca2b34a0da3974610b625004b68276b52144151968d5ad048bfdc9323
SSDEEP

768:snJou1CMvfrlqzYvmzSfHDXmBOfJSu87:sJoWCMfr8z4HDJK

Score

10^/10

purecrypter discovery downloader loader

Malware Config

Extracted

Family

purecrypter

https://cdn.discordapp.com/attachments/897455876376522762/899600149494525971/File.png

Signatures

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

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2852	2636	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	Details_01.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2636	Details_01.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2636 wrote to memory of 2852	2636	Details_01.exe	30
PID 2636 wrote to memory of 2852	2636	Details_01.exe	30
PID 2636 wrote to memory of 2852	2636	Details_01.exe	30
PID 2636 wrote to memory of 2852	2636	Details_01.exe	30

C:\Users\Admin\AppData\Local\Temp\Details_01.exe
"C:\Users\Admin\AppData\Local\Temp\Details_01.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2636
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2636 -s 1536
  2⤵
  - Program crash
  PID:2852

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/2636-0-0x000000007421E000-0x000000007421F000-memory.dmp

Filesize
4KB

Download
memory/2636-1-0x0000000001020000-0x000000000103A000-memory.dmp

Filesize
104KB

Download
memory/2636-2-0x0000000074210000-0x00000000748FE000-memory.dmp

Filesize
6.9MB

Download
memory/2636-3-0x0000000074210000-0x00000000748FE000-memory.dmp

Filesize
6.9MB

Download
memory/2636-4-0x0000000074210000-0x00000000748FE000-memory.dmp

Filesize
6.9MB

Download