3fb1f3173d00a446df749369af4427bf730bdd8e20cd44953100db4f36645096

Analysis

max time kernel
150s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20240419-en
resource tags

arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
submitted
04-05-2024 12:27

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General

Target

2024-05-04_2e7b040f1026805ec825f4b74d435df4_cryptolocker.exe
Size

39KB
MD5

2e7b040f1026805ec825f4b74d435df4
SHA1

5207efeac9d3fcf9f9bab90c3755c9f9ab55bb39
SHA256

3fb1f3173d00a446df749369af4427bf730bdd8e20cd44953100db4f36645096
SHA512

5d93342ec31bc4f0fd668fe4ea64890a8fdeb6456392b5c5edae3f2920b09ce70a627ff04b884a1f0b7bb019a27a9e440aedc65227c12ba934a0ce3a0b50ab2f
SSDEEP

768:bA74zYcgT/Ekd0ryfjPIunqpeNswmxT4HmxXR:bA6YcA/X6G0W1BGBR

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000d000000023b82-14.dat	CryptoLocker_rule2

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2818691465-3043947619-2475182763-1000\Control Panel\International\Geo\Nation	2024-05-04_2e7b040f1026805ec825f4b74d435df4_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
5000	hasfj.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2876 wrote to memory of 5000	2876	2024-05-04_2e7b040f1026805ec825f4b74d435df4_cryptolocker.exe	83
PID 2876 wrote to memory of 5000	2876	2024-05-04_2e7b040f1026805ec825f4b74d435df4_cryptolocker.exe	83
PID 2876 wrote to memory of 5000	2876	2024-05-04_2e7b040f1026805ec825f4b74d435df4_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-05-04_2e7b040f1026805ec825f4b74d435df4_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-04_2e7b040f1026805ec825f4b74d435df4_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2876
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:5000

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\hasfj.exe

Filesize
40KB

MD5
938696cf6c8abfa20ece8105d34239e4

SHA1
72dc7813eea1a8c9de55e8068fb1139ebba782cd

SHA256
3c71a7bdf2cf8e4e8c18bb08b24f4787180740a8d0a3fb094aac795ea6e340fa

SHA512
e4a57d14298b043151c970466b973712dffdf3899a194bc8efaca72cdeb56214e7b7a3854c75affcfd5e08c5245860677501c28e3a49c83ae7dc38aba7d5b19d

Download Submit
memory/2876-0-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/2876-1-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download
memory/2876-8-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/5000-17-0x00000000020D0000-0x00000000020D6000-memory.dmp

Filesize
24KB

Download
memory/5000-23-0x00000000020A0000-0x00000000020A6000-memory.dmp

Filesize
24KB

Download