cryptolocker | ed95b1a888710f3ca4acacb49250fb6c21722e2882e31784bd2049d15f97d4de

Analysis

max time kernel
150s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
03-12-2024 04:25

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General

Target

bbb445901d3ec280951ac12132afd87c_JaffaCakes118.exe
Size

698KB
MD5

bbb445901d3ec280951ac12132afd87c
SHA1

48146b81b85e41b67489f2c20a4e38cb10d1c778
SHA256

ed95b1a888710f3ca4acacb49250fb6c21722e2882e31784bd2049d15f97d4de
SHA512

5c7c7b02d57a6275149baa67ee3568a2f9fd0d086b3953da20ea552bf1d43845afc3dc6b082d7a0a2557b7560e344cba73d317e0f59c7aa91a55ea9953c69f65
SSDEEP

12288:PPgcwGZdeZ0wIo9e1dYiJQgajJRfswX5B:PYlEu0wIMNiugqEq

Score

10^/10

cryptolocker discovery persistence ransomware

Malware Config

Signatures

CryptoLocker
Ransomware family with multiple variants.
ransomware cryptolocker
Cryptolocker family
cryptolocker

Deletes itself 1 IoCs

pid	Process
3556	Avywuixyxmexxtr.exe

Executes dropped EXE 2 IoCs

pid	Process
3556	Avywuixyxmexxtr.exe
2068	Avywuixyxmexxtr.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\CryptoLocker = "C:\\Users\\Admin\\AppData\\Local\\Avywuixyxmexxtr.exe"	Avywuixyxmexxtr.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\*CryptoLocker = "C:\\Users\\Admin\\AppData\\Local\\Avywuixyxmexxtr.exe"	Avywuixyxmexxtr.exe

System Location Discovery: System Language Discovery 1 TTPs 3 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	bbb445901d3ec280951ac12132afd87c_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Avywuixyxmexxtr.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Avywuixyxmexxtr.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2160 wrote to memory of 3556	2160	bbb445901d3ec280951ac12132afd87c_JaffaCakes118.exe	83
PID 2160 wrote to memory of 3556	2160	bbb445901d3ec280951ac12132afd87c_JaffaCakes118.exe	83
PID 2160 wrote to memory of 3556	2160	bbb445901d3ec280951ac12132afd87c_JaffaCakes118.exe	83
PID 3556 wrote to memory of 2068	3556	Avywuixyxmexxtr.exe	84
PID 3556 wrote to memory of 2068	3556	Avywuixyxmexxtr.exe	84
PID 3556 wrote to memory of 2068	3556	Avywuixyxmexxtr.exe	84

C:\Users\Admin\AppData\Local\Temp\bbb445901d3ec280951ac12132afd87c_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\bbb445901d3ec280951ac12132afd87c_JaffaCakes118.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2160
- C:\Users\Admin\AppData\Local\Avywuixyxmexxtr.exe
  "C:\Users\Admin\AppData\Local\Avywuixyxmexxtr.exe" "-rC:\Users\Admin\AppData\Local\Temp\bbb445901d3ec280951ac12132afd87c_JaffaCakes118.exe"
  2⤵
  - Deletes itself
  - Executes dropped EXE
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3556
- - C:\Users\Admin\AppData\Local\Avywuixyxmexxtr.exe
    "C:\Users\Admin\AppData\Local\Avywuixyxmexxtr.exe" -w24c
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:2068

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

C:\Users\Admin\AppData\Local\Avywuixyxmexxtr.exe

Filesize
698KB

MD5
bbb445901d3ec280951ac12132afd87c

SHA1
48146b81b85e41b67489f2c20a4e38cb10d1c778

SHA256
ed95b1a888710f3ca4acacb49250fb6c21722e2882e31784bd2049d15f97d4de

SHA512
5c7c7b02d57a6275149baa67ee3568a2f9fd0d086b3953da20ea552bf1d43845afc3dc6b082d7a0a2557b7560e344cba73d317e0f59c7aa91a55ea9953c69f65

Download Submit
memory/2068-17-0x0000000000400000-0x00000000004B8000-memory.dmp

Filesize
736KB

Download
memory/2068-19-0x0000000000400000-0x00000000004B8000-memory.dmp

Filesize
736KB

Download
memory/2068-18-0x0000000000400000-0x00000000004B8000-memory.dmp

Filesize
736KB

Download
memory/2068-23-0x0000000000400000-0x00000000004B8000-memory.dmp

Filesize
736KB

Download
memory/2160-2-0x0000000000400000-0x00000000004B8000-memory.dmp

Filesize
736KB

Download
memory/2160-0-0x00000000004B0000-0x00000000004B2000-memory.dmp

Filesize
8KB

Download
memory/2160-11-0x0000000000400000-0x00000000004B8000-memory.dmp

Filesize
736KB

Download
memory/2160-1-0x0000000000400000-0x00000000004B8000-memory.dmp

Filesize
736KB

Download
memory/3556-12-0x0000000000400000-0x00000000004B8000-memory.dmp

Filesize
736KB

Download
memory/3556-13-0x0000000000400000-0x00000000004B8000-memory.dmp

Filesize
736KB

Download
memory/3556-22-0x0000000000400000-0x00000000004B8000-memory.dmp

Filesize
736KB

Download
memory/3556-24-0x0000000000400000-0x00000000004B8000-memory.dmp

Filesize
736KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads