5ce936f349da906042ea3955cdb4be9b05ece60bd033102ef54d88e3e9d4755b

Analysis

max time kernel
150s
max time network
147s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
12-02-2024 20:03

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General

Target

2024-02-12_74b9d683e1aceccfae39a6db4a63db0e_cryptolocker.exe
Size

41KB
MD5

74b9d683e1aceccfae39a6db4a63db0e
SHA1

77ed4461b54ccb503fb032a3854f02b668180c08
SHA256

5ce936f349da906042ea3955cdb4be9b05ece60bd033102ef54d88e3e9d4755b
SHA512

85716e3f2c6ed645c9c899931076ffa452403dd14070be1580124b5c1dcb2920a8fd1cb6568abe6dc345a94b6bbbf9ae6942f7a2036360aaf47799fbfa0ea833
SSDEEP

384:bgX4uGLLQRcsdeQ7/nQu63Ag7YmecFanrlwfjDUkKDfWf0w3sp8u5co9+slG+:bgX4zYcgTEu6QOaryfjqDDw3sCu5b+sD

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

Processes:

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

Processes:

2024-02-12_74b9d683e1aceccfae39a6db4a63db0e_cryptolocker.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\Control Panel\International\Geo\Nation	2024-02-12_74b9d683e1aceccfae39a6db4a63db0e_cryptolocker.exe

Executes dropped EXE 1 IoCs

Processes:

hasfj.exe

pid process

2016 hasfj.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2016	hasfj.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-02-12_74b9d683e1aceccfae39a6db4a63db0e_cryptolocker.exe

description	pid	process	target process
PID 2980 wrote to memory of 2016	2980	2024-02-12_74b9d683e1aceccfae39a6db4a63db0e_cryptolocker.exe	hasfj.exe
PID 2980 wrote to memory of 2016	2980	2024-02-12_74b9d683e1aceccfae39a6db4a63db0e_cryptolocker.exe	hasfj.exe
PID 2980 wrote to memory of 2016	2980	2024-02-12_74b9d683e1aceccfae39a6db4a63db0e_cryptolocker.exe	hasfj.exe

C:\Users\Admin\AppData\Local\Temp\2024-02-12_74b9d683e1aceccfae39a6db4a63db0e_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-12_74b9d683e1aceccfae39a6db4a63db0e_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2980

C:\Users\Admin\AppData\Local\Temp\hasfj.exe
"C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
2⤵
- Executes dropped EXE
PID:2016

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
41KB

MD5
4e162e452f55533bbcc590908e09a58b

SHA1
29ec47cbfb0ad93f5a5ac6f13abed17820edb7ce

SHA256
44d6afa08cd0e8d3f3fcd7a06d40406aebc327bed4a07d983248256a8527fd96

SHA512
49813e8396f76b8c073390611397a2b75414f9d94dbe862ff2577746457e48ad27108391ac5823ec197a4e604aa4e9c9d2816848ab9a267dd70f4ca346b4abdb

Download Submit
memory/2016-17-0x0000000003010000-0x0000000003016000-memory.dmp

Filesize
24KB

Download
memory/2016-23-0x0000000000600000-0x0000000000606000-memory.dmp

Filesize
24KB

Download
memory/2980-0-0x0000000002260000-0x0000000002266000-memory.dmp

Filesize
24KB

Download
memory/2980-1-0x0000000002260000-0x0000000002266000-memory.dmp

Filesize
24KB

Download
memory/2980-2-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download