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
Sample221206-vbksmaeg98
SHA256 ed95b1a888710f3ca4acacb49250fb6c21722e2882e31784bd2049d15f97d4de
MD5 bbb445901d3ec280951ac12132afd87c
SHA1 48146b81b85e41b67489f2c20a4e38cb10d1c778
SHA512 5c7c7b02d57a6275149baa67ee3568a2f9fd0d086b3953da20ea552bf1d43845afc3dc6b082d7a0a2557b7560e344cba73d317e0f59c7aa91a55ea9953c69f65
SSDEEP 12288:PPgcwGZdeZ0wIo9e1dYiJQgajJRfswX5B:PYlEu0wIMNiugqEq
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

cryptolocker persistence ransomware

Malware Config

Signatures

CryptoLocker
Ransomware family with multiple variants.
ransomware cryptolocker

Executes dropped EXE 2 IoCs

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

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

description	pid	Process	procid_target
PID 632 wrote to memory of 3136	632	ed95b1a888710f3ca4acacb49250fb6c21722e2882e31784bd2049d15f97d4de.exe	85
PID 632 wrote to memory of 3136	632	ed95b1a888710f3ca4acacb49250fb6c21722e2882e31784bd2049d15f97d4de.exe	85
PID 632 wrote to memory of 3136	632	ed95b1a888710f3ca4acacb49250fb6c21722e2882e31784bd2049d15f97d4de.exe	85
PID 3136 wrote to memory of 1700	3136	Avywuixyxmexxtr.exe	86
PID 3136 wrote to memory of 1700	3136	Avywuixyxmexxtr.exe	86
PID 3136 wrote to memory of 1700	3136	Avywuixyxmexxtr.exe	86

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

Replay Monitor

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Downloads

Avywuixyxmexxtr.exe

Path C:\Users\Admin\AppData\Local\Avywuixyxmexxtr.exe
Size 698KB
SHA256 ed95b1a888710f3ca4acacb49250fb6c21722e2882e31784bd2049d15f97d4de
MD5 bbb445901d3ec280951ac12132afd87c
SHA1 48146b81b85e41b67489f2c20a4e38cb10d1c778
SHA512 5c7c7b02d57a6275149baa67ee3568a2f9fd0d086b3953da20ea552bf1d43845afc3dc6b082d7a0a2557b7560e344cba73d317e0f59c7aa91a55ea9953c69f65
SSDEEP 12288:PPgcwGZdeZ0wIo9e1dYiJQgajJRfswX5B:PYlEu0wIMNiugqEq
MD5 SHA1 SHA512 SSDEEP

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Avywuixyxmexxtr.exe

Path C:\Users\Admin\AppData\Local\Avywuixyxmexxtr.exe
Size 698KB
SHA256 ed95b1a888710f3ca4acacb49250fb6c21722e2882e31784bd2049d15f97d4de
MD5 bbb445901d3ec280951ac12132afd87c
SHA1 48146b81b85e41b67489f2c20a4e38cb10d1c778
SHA512 5c7c7b02d57a6275149baa67ee3568a2f9fd0d086b3953da20ea552bf1d43845afc3dc6b082d7a0a2557b7560e344cba73d317e0f59c7aa91a55ea9953c69f65
SSDEEP 12288:PPgcwGZdeZ0wIo9e1dYiJQgajJRfswX5B:PYlEu0wIMNiugqEq
MD5 SHA1 SHA512 SSDEEP

Submit Download

Avywuixyxmexxtr.exe

Path C:\Users\Admin\AppData\Local\Avywuixyxmexxtr.exe
Size 698KB
SHA256 ed95b1a888710f3ca4acacb49250fb6c21722e2882e31784bd2049d15f97d4de
MD5 bbb445901d3ec280951ac12132afd87c
SHA1 48146b81b85e41b67489f2c20a4e38cb10d1c778
SHA512 5c7c7b02d57a6275149baa67ee3568a2f9fd0d086b3953da20ea552bf1d43845afc3dc6b082d7a0a2557b7560e344cba73d317e0f59c7aa91a55ea9953c69f65
SSDEEP 12288:PPgcwGZdeZ0wIo9e1dYiJQgajJRfswX5B:PYlEu0wIMNiugqEq
MD5 SHA1 SHA512 SSDEEP

Submit Download

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

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

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

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

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

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

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

Download

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

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads