cryptolocker | e3fa90f7c598daab4c168eabb4dbc9f95ee89b28b857e27c9f1f30ab3b38e915

Analysis

max time kernel
152s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
04-03-2024 03:02

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General

Target

a060be447351d0e1fdb71f45e8cc3619.exe
Size

415KB
MD5

a060be447351d0e1fdb71f45e8cc3619
SHA1

45179b3f489d99bee2d33def800f7d6978ba9bc3
SHA256

e3fa90f7c598daab4c168eabb4dbc9f95ee89b28b857e27c9f1f30ab3b38e915
SHA512

5fbacdc82196e088a27165be1243fbc78fe797721bce458e654ad96a8c9e00f59154844f15f402ea8fe99b141ff922272c5a8979404864edbed49e7cdf81f4e6
SSDEEP

6144:iWmw0EuCN0pLWgTO3x5N22vWvLRKKAX5l++SybIvCOivgUOCo7nuao4S0b28BW7z:iWkEuCaNT85I2vCMX5l+ZRv/S

Score

10^/10

cryptolocker persistence ransomware

Malware Config

Signatures

CryptoLocker
Ransomware family with multiple variants.
ransomware cryptolocker

Deletes itself 1 IoCs

pid	Process
4384	{34184A33-0407-212E-3320-09040709E2C2}.exe

Executes dropped EXE 2 IoCs

pid	Process
4384	{34184A33-0407-212E-3320-09040709E2C2}.exe
3904	{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 2356 wrote to memory of 4384	2356	a060be447351d0e1fdb71f45e8cc3619.exe	95
PID 2356 wrote to memory of 4384	2356	a060be447351d0e1fdb71f45e8cc3619.exe	95
PID 2356 wrote to memory of 4384	2356	a060be447351d0e1fdb71f45e8cc3619.exe	95
PID 4384 wrote to memory of 3904	4384	{34184A33-0407-212E-3320-09040709E2C2}.exe	97
PID 4384 wrote to memory of 3904	4384	{34184A33-0407-212E-3320-09040709E2C2}.exe	97
PID 4384 wrote to memory of 3904	4384	{34184A33-0407-212E-3320-09040709E2C2}.exe	97

C:\Users\Admin\AppData\Local\Temp\a060be447351d0e1fdb71f45e8cc3619.exe
"C:\Users\Admin\AppData\Local\Temp\a060be447351d0e1fdb71f45e8cc3619.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2356
- 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\a060be447351d0e1fdb71f45e8cc3619.exe"
  2⤵
  - Deletes itself
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious use of WriteProcessMemory
  PID:4384
- - C:\Users\Admin\AppData\Roaming\{34184A33-0407-212E-3320-09040709E2C2}.exe
    "C:\Users\Admin\AppData\Roaming\{34184A33-0407-212E-3320-09040709E2C2}.exe" /w00000224
    3⤵
    - Executes dropped EXE
    PID:3904

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=3940 --field-trial-handle=2284,i,15722001240173834669,15048020084704567542,262144 --variations-seed-version /prefetch:8
1⤵
PID:4000

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

C:\Users\Admin\AppData\Roaming\{34184A33-0407-212E-3320-09040709E2C2}.exe

Filesize
415KB

MD5
a060be447351d0e1fdb71f45e8cc3619

SHA1
45179b3f489d99bee2d33def800f7d6978ba9bc3

SHA256
e3fa90f7c598daab4c168eabb4dbc9f95ee89b28b857e27c9f1f30ab3b38e915

SHA512
5fbacdc82196e088a27165be1243fbc78fe797721bce458e654ad96a8c9e00f59154844f15f402ea8fe99b141ff922272c5a8979404864edbed49e7cdf81f4e6

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads