cryptolocker | 6b14c5898323db58c5ff44149f65fc99b04924ba76dac72c18872e53d4829af9

Analysis

max time kernel
150s
max time network
154s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
04-03-2024 04:32

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General

Target

e256554751f567643b949445307bbbd4.exe
Size

404KB
MD5

e256554751f567643b949445307bbbd4
SHA1

a3ec05323d9c7ed51868615f46449818dd69201c
SHA256

6b14c5898323db58c5ff44149f65fc99b04924ba76dac72c18872e53d4829af9
SHA512

a1dfafb2a9229e42e30a794cac4bcc89e7007487b93d262779f1f076c80c7d0752fc910e7bc3ceee70443902cc169b3dc835cb02267ca8490620fa7ebf1bab5e
SSDEEP

6144:HWmw0EuCN0pLWgTO3x5N22vWvLRKKAX5l++SybIvCGJdZ3:HWkEuCaNT85I2vCMX5l+ZRvJdZ3

Score

10^/10

cryptolocker persistence ransomware

Malware Config

Signatures

CryptoLocker
Ransomware family with multiple variants.
ransomware cryptolocker

Deletes itself 1 IoCs

pid	Process
2864	{34184A33-0407-212E-3320-09040709E2C2}.exe

Executes dropped EXE 2 IoCs

pid	Process
2864	{34184A33-0407-212E-3320-09040709E2C2}.exe
2828	{34184A33-0407-212E-3320-09040709E2C2}.exe

Loads dropped DLL 2 IoCs

pid	Process
2648	e256554751f567643b949445307bbbd4.exe
2864	{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-1-5-21-330940541-141609230-1670313778-1000\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 8 IoCs

description	pid	Process	procid_target
PID 2648 wrote to memory of 2864	2648	e256554751f567643b949445307bbbd4.exe	28
PID 2648 wrote to memory of 2864	2648	e256554751f567643b949445307bbbd4.exe	28
PID 2648 wrote to memory of 2864	2648	e256554751f567643b949445307bbbd4.exe	28
PID 2648 wrote to memory of 2864	2648	e256554751f567643b949445307bbbd4.exe	28
PID 2864 wrote to memory of 2828	2864	{34184A33-0407-212E-3320-09040709E2C2}.exe	29
PID 2864 wrote to memory of 2828	2864	{34184A33-0407-212E-3320-09040709E2C2}.exe	29
PID 2864 wrote to memory of 2828	2864	{34184A33-0407-212E-3320-09040709E2C2}.exe	29
PID 2864 wrote to memory of 2828	2864	{34184A33-0407-212E-3320-09040709E2C2}.exe	29

C:\Users\Admin\AppData\Local\Temp\e256554751f567643b949445307bbbd4.exe
"C:\Users\Admin\AppData\Local\Temp\e256554751f567643b949445307bbbd4.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2648
- 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\e256554751f567643b949445307bbbd4.exe"
  2⤵
  - Deletes itself
  - Executes dropped EXE
  - Loads dropped DLL
  - Adds Run key to start application
  - Suspicious use of WriteProcessMemory
  PID:2864
- - C:\Users\Admin\AppData\Roaming\{34184A33-0407-212E-3320-09040709E2C2}.exe
    "C:\Users\Admin\AppData\Roaming\{34184A33-0407-212E-3320-09040709E2C2}.exe" /w000000C8
    3⤵
    - Executes dropped EXE
    PID:2828

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

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

Filesize
404KB

MD5
e256554751f567643b949445307bbbd4

SHA1
a3ec05323d9c7ed51868615f46449818dd69201c

SHA256
6b14c5898323db58c5ff44149f65fc99b04924ba76dac72c18872e53d4829af9

SHA512
a1dfafb2a9229e42e30a794cac4bcc89e7007487b93d262779f1f076c80c7d0752fc910e7bc3ceee70443902cc169b3dc835cb02267ca8490620fa7ebf1bab5e

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads