cryptolocker | 7d87771c0bdc3feac638f692586a1317b8d6d9bb69ed28819154c43051dc7c80

Analysis

max time kernel
151s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
02/03/2024, 16:52

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General

Target
2024-03-02_5dfd753473751da0685dbc79709a5087_cryptolocker.exe
Size 385KB
Sample240302-vdpvcsfe87
SHA256 7d87771c0bdc3feac638f692586a1317b8d6d9bb69ed28819154c43051dc7c80
MD5 5dfd753473751da0685dbc79709a5087
SHA1 34eb0c24f08390fe7a9c3238cf4d02e45ec12719
SHA512 a3a60af967ce5255d7fd2aef3a88422187a8949192c8ebcbc89ac44dceabb5afa0a00968f43cf4e648774cf26a7399ad090ef84c264acfb2f9e4724cc3edaccb
SSDEEP 6144:JWmw0EuCN0pLWgTO3x5N22vWvLRKKAX5l++SybIvCbZRY:JWkEuCaNT85I2vCMX5l+ZRvyZRY
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

cryptolocker persistence ransomware

Malware Config

Signatures

CryptoLocker
Ransomware family with multiple variants.
ransomware cryptolocker

Deletes itself 1 IoCs

pid	Process
4028	{34184A33-0407-212E-3320-09040709E2C2}.exe

Executes dropped EXE 2 IoCs

pid	Process
4028	{34184A33-0407-212E-3320-09040709E2C2}.exe
1436	{34184A33-0407-212E-3320-09040709E2C2}.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\CryptoLocker = "C:\\Users\\Admin\\AppData\\Roaming\\{34184A33-0407-212E-3320-09040709E2C2}.exe"	{34184A33-0407-212E-3320-09040709E2C2}.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2600 wrote to memory of 4028	2600	2024-03-02_5dfd753473751da0685dbc79709a5087_cryptolocker.exe	96
PID 2600 wrote to memory of 4028	2600	2024-03-02_5dfd753473751da0685dbc79709a5087_cryptolocker.exe	96
PID 2600 wrote to memory of 4028	2600	2024-03-02_5dfd753473751da0685dbc79709a5087_cryptolocker.exe	96
PID 4028 wrote to memory of 1436	4028	{34184A33-0407-212E-3320-09040709E2C2}.exe	97
PID 4028 wrote to memory of 1436	4028	{34184A33-0407-212E-3320-09040709E2C2}.exe	97
PID 4028 wrote to memory of 1436	4028	{34184A33-0407-212E-3320-09040709E2C2}.exe	97

C:\Users\Admin\AppData\Local\Temp\2024-03-02_5dfd753473751da0685dbc79709a5087_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-02_5dfd753473751da0685dbc79709a5087_cryptolocker.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2600
- C:\Users\Admin\AppData\Roaming\{34184A33-0407-212E-3320-09040709E2C2}.exe
  "C:\Users\Admin\AppData\Roaming\{34184A33-0407-212E-3320-09040709E2C2}.exe" "/rC:\Users\Admin\AppData\Local\Temp\2024-03-02_5dfd753473751da0685dbc79709a5087_cryptolocker.exe"
  2⤵
  - Deletes itself
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious use of WriteProcessMemory
  PID:4028
- - C:\Users\Admin\AppData\Roaming\{34184A33-0407-212E-3320-09040709E2C2}.exe
    "C:\Users\Admin\AppData\Roaming\{34184A33-0407-212E-3320-09040709E2C2}.exe" /w0000021C
    3⤵
    - Executes dropped EXE
    PID:1436

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4192 --field-trial-handle=2276,i,5697607538120380977,9987005253899555344,262144 --variations-seed-version /prefetch:8
1⤵
PID:3576

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

{34184A33-0407-212E-3320-09040709E2C2}.exe

Path C:\Users\Admin\AppData\Roaming\{34184A33-0407-212E-3320-09040709E2C2}.exe
Size 385KB
SHA256 7d87771c0bdc3feac638f692586a1317b8d6d9bb69ed28819154c43051dc7c80
MD5 5dfd753473751da0685dbc79709a5087
SHA1 34eb0c24f08390fe7a9c3238cf4d02e45ec12719
SHA512 a3a60af967ce5255d7fd2aef3a88422187a8949192c8ebcbc89ac44dceabb5afa0a00968f43cf4e648774cf26a7399ad090ef84c264acfb2f9e4724cc3edaccb
SSDEEP 6144:JWmw0EuCN0pLWgTO3x5N22vWvLRKKAX5l++SybIvCbZRY:JWkEuCaNT85I2vCMX5l+ZRvyZRY
MD5 SHA1 SHA512 SSDEEP

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Analysis

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General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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