dc170668f64133df89f372c24bc963512bdb359b38d38c5ccdcb1353fa55a5b3

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
05/04/2024, 21:28

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General

Target

2024-04-05_531e145259c2be8394edd41d386991c4_cryptolocker.exe
Size

388KB
MD5

531e145259c2be8394edd41d386991c4
SHA1

b961cc4e32baa3464457df4e6f25e81a0b219e39
SHA256

dc170668f64133df89f372c24bc963512bdb359b38d38c5ccdcb1353fa55a5b3
SHA512

259ea19b94e115fe0a83cde9955408ef60c04c1be6432f7747376e048e7aadca79d7a36018cc5b518cd151f2d788bae8a1f0dc987c229ed0d717bfd18867a44e
SSDEEP

6144:nnOsaQgAOjvrZFODJjBz3j1jTqQy6v2GGnugOtihzXR:nnOflT/ZFIjBz3xjTxynGUOUhXR

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00080000000231f3-12.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-1-5-21-1497073144-2389943819-3385106915-1000\Control Panel\International\Geo\Nation	2024-04-05_531e145259c2be8394edd41d386991c4_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3160	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 3148 wrote to memory of 3160	3148	2024-04-05_531e145259c2be8394edd41d386991c4_cryptolocker.exe	85
PID 3148 wrote to memory of 3160	3148	2024-04-05_531e145259c2be8394edd41d386991c4_cryptolocker.exe	85
PID 3148 wrote to memory of 3160	3148	2024-04-05_531e145259c2be8394edd41d386991c4_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-04-05_531e145259c2be8394edd41d386991c4_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-05_531e145259c2be8394edd41d386991c4_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3148
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:3160

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
389KB

MD5
57dce518b0cf8857ec13179f0ef1b82a

SHA1
acecd76922d6621bd6da122209c9adee64143fa3

SHA256
9d8c7f68efa7a7c98513c49654f29a5d2c25a7c5a7ca0c0d293ee79a7426939c

SHA512
1079fab04755c30fa5f9fab2cedb5d938c103ec440849a7fe8b1235a9a657552f79800ae43033b0ff2f4a3e47a89ce930323cba97c7f300c9627758392f725a0

Download Submit
memory/3148-0-0x0000000002350000-0x0000000002356000-memory.dmp

Filesize
24KB

Download
memory/3148-1-0x0000000002350000-0x0000000002356000-memory.dmp

Filesize
24KB

Download
memory/3148-2-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download
memory/3160-18-0x0000000002D60000-0x0000000002D66000-memory.dmp

Filesize
24KB

Download
memory/3160-17-0x0000000003010000-0x0000000003016000-memory.dmp

Filesize
24KB

Download