purecrypter | 37537b375b09bd2759267373a10103310975ecffdad8f00885b7be609d30c2b8

Analysis

max time kernel
121s
max time network
122s
platform
windows7_x64
resource
win7-20240705-en
resource tags

arch:x64arch:x86image:win7-20240705-enlocale:en-usos:windows7-x64system
submitted
13-08-2024 17:08

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General

Target

93fa9615b5b68cb4d4c85391fd1f3565_JaffaCakes118.exe
Size

74KB
MD5

93fa9615b5b68cb4d4c85391fd1f3565
SHA1

c8219c359f1f39fdb02e35280999176cce48f2d4
SHA256

37537b375b09bd2759267373a10103310975ecffdad8f00885b7be609d30c2b8
SHA512

25d3ff154bdf99950accfba0eb49dc5d49b870d7f3108a163d2798c7773c2c2cebf57d939f8b16f8a1d45de95e6ac466b1c4425a66639f0b7fd78a64d8aa9359
SSDEEP

1536:AHN5u5fejAeXpmFM0pJAvckOXw72AtY4fAcU:AHNcfpesFM02BY4fS

Score

10^/10

purecrypter discovery downloader loader

Malware Config

Extracted

Family

purecrypter

https://store2.gofile.io/download/9552a715-46fc-4187-bb0c-ece3f0c880cd/Lyhkvjpnugcyvdsym.dll

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
2856	2176	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	93fa9615b5b68cb4d4c85391fd1f3565_JaffaCakes118.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2176	93fa9615b5b68cb4d4c85391fd1f3565_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2176 wrote to memory of 2856	2176	93fa9615b5b68cb4d4c85391fd1f3565_JaffaCakes118.exe	32
PID 2176 wrote to memory of 2856	2176	93fa9615b5b68cb4d4c85391fd1f3565_JaffaCakes118.exe	32
PID 2176 wrote to memory of 2856	2176	93fa9615b5b68cb4d4c85391fd1f3565_JaffaCakes118.exe	32
PID 2176 wrote to memory of 2856	2176	93fa9615b5b68cb4d4c85391fd1f3565_JaffaCakes118.exe	32

C:\Users\Admin\AppData\Local\Temp\93fa9615b5b68cb4d4c85391fd1f3565_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\93fa9615b5b68cb4d4c85391fd1f3565_JaffaCakes118.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2176
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2176 -s 1132
  2⤵
  - Program crash
  PID:2856

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

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Downloads

memory/2176-0-0x0000000074D8E000-0x0000000074D8F000-memory.dmp

Filesize
4KB

Download
memory/2176-1-0x0000000001350000-0x0000000001368000-memory.dmp

Filesize
96KB

Download
memory/2176-2-0x0000000074D80000-0x000000007546E000-memory.dmp

Filesize
6.9MB

Download
memory/2176-3-0x0000000074D80000-0x000000007546E000-memory.dmp

Filesize
6.9MB

Download