ab47e40e1b29a0f27ac4aaffbf2abe2451226795edbdb97adbd23ffcb7d40f1e

Analysis

max time kernel
157s
max time network
163s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
28-03-2024 00:38

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General

Target

2024-03-28_7819bff8dc5ca4135b3d42ecbbd7a56c_cryptolocker.exe
Size

387KB
MD5

7819bff8dc5ca4135b3d42ecbbd7a56c
SHA1

c48390bda53e6ae4581fc5db41fb61e73eb451a2
SHA256

ab47e40e1b29a0f27ac4aaffbf2abe2451226795edbdb97adbd23ffcb7d40f1e
SHA512

1bb10c160560d363fc6eb659419dd95c658e493d3bb45d3c3611a0d4d32de59526f6defaa1144caabdb9f36f688ca7ae8605a39b4fdc181dd4891cc57a0d54d7
SSDEEP

6144:nnOsaQgAOjvrZFODJjBz3j1jTqQy6v2GGnugOtihzXd:nnOflT/ZFIjBz3xjTxynGUOUhXd

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023208-12.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-1-5-21-3045580317-3728985860-206385570-1000\Control Panel\International\Geo\Nation	2024-03-28_7819bff8dc5ca4135b3d42ecbbd7a56c_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1364	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 1508 wrote to memory of 1364	1508	2024-03-28_7819bff8dc5ca4135b3d42ecbbd7a56c_cryptolocker.exe	88
PID 1508 wrote to memory of 1364	1508	2024-03-28_7819bff8dc5ca4135b3d42ecbbd7a56c_cryptolocker.exe	88
PID 1508 wrote to memory of 1364	1508	2024-03-28_7819bff8dc5ca4135b3d42ecbbd7a56c_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-03-28_7819bff8dc5ca4135b3d42ecbbd7a56c_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-28_7819bff8dc5ca4135b3d42ecbbd7a56c_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1508
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:1364

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
387KB

MD5
7ebc17943691619e15c998cedac2047d

SHA1
fa55c8c19e056b389c340fa8ad90c84f6f54843f

SHA256
f9187c784a21a127b8182ec2f70daeec70841bfb35c0bc516c21b5bef5473d8f

SHA512
298b66e41f18589dbbcca2cda61ccb53a65059ee54864d6cdd735ce9b2c9e045213ba8a193a48da8f7a530a28bcaab34296ceec8b176677137f8932f6c191c32

Download Submit
memory/1364-17-0x0000000003010000-0x0000000003016000-memory.dmp

Filesize
24KB

Download
memory/1364-19-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/1508-0-0x0000000002350000-0x0000000002356000-memory.dmp

Filesize
24KB

Download
memory/1508-1-0x0000000002350000-0x0000000002356000-memory.dmp

Filesize
24KB

Download
memory/1508-2-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download