cryptolocker | ed95b1a888710f3ca4acacb49250fb6c21722e2882e31784bd2049d15f97d4de

Analysis

max time kernel
178s
max time network
191s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
06-12-2022 16:48

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General

Target

ed95b1a888710f3ca4acacb49250fb6c21722e2882e31784bd2049d15f97d4de.exe
Size

698KB
MD5

bbb445901d3ec280951ac12132afd87c
SHA1

48146b81b85e41b67489f2c20a4e38cb10d1c778
SHA256

ed95b1a888710f3ca4acacb49250fb6c21722e2882e31784bd2049d15f97d4de
SHA512

5c7c7b02d57a6275149baa67ee3568a2f9fd0d086b3953da20ea552bf1d43845afc3dc6b082d7a0a2557b7560e344cba73d317e0f59c7aa91a55ea9953c69f65
SSDEEP

12288:PPgcwGZdeZ0wIo9e1dYiJQgajJRfswX5B:PYlEu0wIMNiugqEq

Score

10^/10

cryptolocker persistence ransomware

Malware Config

Signatures

CryptoLocker
Ransomware family with multiple variants.
ransomware cryptolocker
Executes dropped EXE 2 IoCs

Processes:

Avywuixyxmexxtr.exeAvywuixyxmexxtr.exe

pid process

3136 Avywuixyxmexxtr.exe
1700 Avywuixyxmexxtr.exe

pid	process
3136	Avywuixyxmexxtr.exe
1700	Avywuixyxmexxtr.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

Avywuixyxmexxtr.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\CryptoLocker = "C:\\Users\\Admin\\AppData\\Local\\Avywuixyxmexxtr.exe"	Avywuixyxmexxtr.exe
Key created	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce	Avywuixyxmexxtr.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\*CryptoLocker = "C:\\Users\\Admin\\AppData\\Local\\Avywuixyxmexxtr.exe"	Avywuixyxmexxtr.exe
Key created	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\Software\Microsoft\Windows\CurrentVersion\Run	Avywuixyxmexxtr.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

ed95b1a888710f3ca4acacb49250fb6c21722e2882e31784bd2049d15f97d4de.exeAvywuixyxmexxtr.exe

description	pid	process	target process
PID 632 wrote to memory of 3136	632	ed95b1a888710f3ca4acacb49250fb6c21722e2882e31784bd2049d15f97d4de.exe	Avywuixyxmexxtr.exe
PID 632 wrote to memory of 3136	632	ed95b1a888710f3ca4acacb49250fb6c21722e2882e31784bd2049d15f97d4de.exe	Avywuixyxmexxtr.exe
PID 632 wrote to memory of 3136	632	ed95b1a888710f3ca4acacb49250fb6c21722e2882e31784bd2049d15f97d4de.exe	Avywuixyxmexxtr.exe
PID 3136 wrote to memory of 1700	3136	Avywuixyxmexxtr.exe	Avywuixyxmexxtr.exe
PID 3136 wrote to memory of 1700	3136	Avywuixyxmexxtr.exe	Avywuixyxmexxtr.exe
PID 3136 wrote to memory of 1700	3136	Avywuixyxmexxtr.exe	Avywuixyxmexxtr.exe

C:\Users\Admin\AppData\Local\Temp\ed95b1a888710f3ca4acacb49250fb6c21722e2882e31784bd2049d15f97d4de.exe
"C:\Users\Admin\AppData\Local\Temp\ed95b1a888710f3ca4acacb49250fb6c21722e2882e31784bd2049d15f97d4de.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:632
- C:\Users\Admin\AppData\Local\Avywuixyxmexxtr.exe
  "C:\Users\Admin\AppData\Local\Avywuixyxmexxtr.exe" "-rC:\Users\Admin\AppData\Local\Temp\ed95b1a888710f3ca4acacb49250fb6c21722e2882e31784bd2049d15f97d4de.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious use of WriteProcessMemory
  PID:3136
- - C:\Users\Admin\AppData\Local\Avywuixyxmexxtr.exe
    "C:\Users\Admin\AppData\Local\Avywuixyxmexxtr.exe" -w264
    3⤵
    - Executes dropped EXE
    PID:1700

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

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

Filesize
698KB

MD5
bbb445901d3ec280951ac12132afd87c

SHA1
48146b81b85e41b67489f2c20a4e38cb10d1c778

SHA256
ed95b1a888710f3ca4acacb49250fb6c21722e2882e31784bd2049d15f97d4de

SHA512
5c7c7b02d57a6275149baa67ee3568a2f9fd0d086b3953da20ea552bf1d43845afc3dc6b082d7a0a2557b7560e344cba73d317e0f59c7aa91a55ea9953c69f65

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

Filesize
698KB

MD5
bbb445901d3ec280951ac12132afd87c

SHA1
48146b81b85e41b67489f2c20a4e38cb10d1c778

SHA256
ed95b1a888710f3ca4acacb49250fb6c21722e2882e31784bd2049d15f97d4de

SHA512
5c7c7b02d57a6275149baa67ee3568a2f9fd0d086b3953da20ea552bf1d43845afc3dc6b082d7a0a2557b7560e344cba73d317e0f59c7aa91a55ea9953c69f65

Download Submit
memory/632-133-0x0000000000400000-0x00000000004B8000-memory.dmp

Filesize
736KB

Download
memory/632-139-0x0000000000400000-0x00000000004B8000-memory.dmp

Filesize
736KB

Download
memory/632-132-0x0000000000400000-0x00000000004B8000-memory.dmp

Filesize
736KB

Download
memory/1700-144-0x0000000000000000-mapping.dmp

Download
memory/1700-146-0x0000000000400000-0x00000000004B8000-memory.dmp

Filesize
736KB

Download
memory/1700-149-0x0000000000400000-0x00000000004B8000-memory.dmp

Filesize
736KB

Download
memory/3136-136-0x0000000000000000-mapping.dmp

Download
memory/3136-140-0x0000000000400000-0x00000000004B8000-memory.dmp

Filesize
736KB

Download
memory/3136-143-0x0000000000400000-0x00000000004B8000-memory.dmp

Filesize
736KB

Download
memory/3136-150-0x0000000000400000-0x00000000004B8000-memory.dmp

Filesize
736KB

Download