8319b574f71c75e7d9ba1ebd3266be9839f82764c46eada354589fcf43d6c06e

Analysis

max time kernel
150s
max time network
151s
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, 23:23

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General

Target

2024-05-04_54a78028af67ccda86570434245b65ed_cryptolocker.exe
Size

39KB
MD5

54a78028af67ccda86570434245b65ed
SHA1

e4db9eaacc144a20ff0ac576eb6e1cf922eea9d6
SHA256

8319b574f71c75e7d9ba1ebd3266be9839f82764c46eada354589fcf43d6c06e
SHA512

2a69e72083afb38fd8047ff7965ee365c87f9c1f3ab106844912ce1f89fa8b22ef1478784c31ba323a58d06e8c66d76016e18a6827c309f1b1cd33083c7e30e3
SSDEEP

768:bA74zYcgT/Ekd0ryfjPIunqpeNswmxT4HmG:bA6YcA/X6G0W1BGG

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000e000000021618-12.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-1-5-21-877519540-908060166-1852957295-1000\Control Panel\International\Geo\Nation	2024-05-04_54a78028af67ccda86570434245b65ed_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3684	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 1868 wrote to memory of 3684	1868	2024-05-04_54a78028af67ccda86570434245b65ed_cryptolocker.exe	85
PID 1868 wrote to memory of 3684	1868	2024-05-04_54a78028af67ccda86570434245b65ed_cryptolocker.exe	85
PID 1868 wrote to memory of 3684	1868	2024-05-04_54a78028af67ccda86570434245b65ed_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-05-04_54a78028af67ccda86570434245b65ed_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-04_54a78028af67ccda86570434245b65ed_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1868
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:3684

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
39KB

MD5
8eaf332f5b8ff0963dfbc366e66ff3e6

SHA1
4dd033f0cfcd0d2f991121507c13831a742fd78a

SHA256
e89fad9f37c1de89ff889ac8644243902a028443571c5dcccabb1920c70387ad

SHA512
23d1a8349ec988ab040a2cf8dea82730b633160e1188117552b8f903b145c9c7e424907f59ef17a664f10af71697bcd6a1c9de29b7e8832d50ce1370d407bad3

Download Submit
memory/1868-0-0x0000000002350000-0x0000000002356000-memory.dmp

Filesize
24KB

Download
memory/1868-1-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download
memory/1868-8-0x0000000002350000-0x0000000002356000-memory.dmp

Filesize
24KB

Download
memory/3684-18-0x0000000003010000-0x0000000003016000-memory.dmp

Filesize
24KB

Download
memory/3684-23-0x0000000002190000-0x0000000002196000-memory.dmp

Filesize
24KB

Download