b4522c235424f4fc44c2bca2a10b6d973770f613e528fbf094896f3871bd41f3

Analysis

max time kernel
150s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
15-03-2024 13:49

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General

Target

2024-03-15_86e34f98aea29bd142b5660c5c288de0_cryptolocker.exe
Size

385KB
MD5

86e34f98aea29bd142b5660c5c288de0
SHA1

0ba95e86bcac4bb0448b0a5c52e5d2959ceffff6
SHA256

b4522c235424f4fc44c2bca2a10b6d973770f613e528fbf094896f3871bd41f3
SHA512

76a3516d43bdda528dfd224840691b114d3603766c33e9f75520a81158e8cd8fe66dbb78091cfb753bf87301b2ea9e7cffac67f6f2546c8c290fa3358380716f
SSDEEP

6144:nnOsaQgAOjvrZFODJjBz3j1jTqQy6v2GGnugOtihzXR:nnOflT/ZFIjBz3xjTxynGUOUhXR

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000300000001e9a0-12.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-1-5-21-275798769-4264537674-1142822080-1000\Control Panel\International\Geo\Nation	2024-03-15_86e34f98aea29bd142b5660c5c288de0_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1764	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 4240 wrote to memory of 1764	4240	2024-03-15_86e34f98aea29bd142b5660c5c288de0_cryptolocker.exe	89
PID 4240 wrote to memory of 1764	4240	2024-03-15_86e34f98aea29bd142b5660c5c288de0_cryptolocker.exe	89
PID 4240 wrote to memory of 1764	4240	2024-03-15_86e34f98aea29bd142b5660c5c288de0_cryptolocker.exe	89

C:\Users\Admin\AppData\Local\Temp\2024-03-15_86e34f98aea29bd142b5660c5c288de0_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-15_86e34f98aea29bd142b5660c5c288de0_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4240
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:1764

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
386KB

MD5
f600aa985b9761f39fc218b9acd0d613

SHA1
f4909a4e5c7b584ce98124fbbca2442274a5c8dc

SHA256
469528ef64e23cb2197aff7001bcbe1179ee27442922fcc67527ba72080ab7e0

SHA512
f8588afa7778d8abd8c39f27fcfc63cabc432586b21909c4c07847f91acbadab64e09d72f0379f6f6d4c602f2eac061424f5806d5c2cb2a4ccc4a67e693da307

Download Submit
memory/1764-17-0x0000000003010000-0x0000000003016000-memory.dmp

Filesize
24KB

Download
memory/1764-19-0x0000000002D60000-0x0000000002D66000-memory.dmp

Filesize
24KB

Download
memory/4240-0-0x0000000002340000-0x0000000002346000-memory.dmp

Filesize
24KB

Download
memory/4240-1-0x0000000002340000-0x0000000002346000-memory.dmp

Filesize
24KB

Download
memory/4240-2-0x0000000002400000-0x0000000002406000-memory.dmp

Filesize
24KB

Download