eac96ba70904fbcc76c37adeaf43bdfb7125708cb12afce83f5b2307922a0cda

Analysis

max time kernel
150s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
03/06/2024, 04:24

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General

Target

2024-06-03_1ee7d737b8989996214df4464053d02b_cryptolocker.exe
Size

45KB
MD5

1ee7d737b8989996214df4464053d02b
SHA1

fe34bf75270020e006530b566d30f66959a600fd
SHA256

eac96ba70904fbcc76c37adeaf43bdfb7125708cb12afce83f5b2307922a0cda
SHA512

304cd6584846cd1984a6803d668278f83e155182ea11c0e2bc4b02410e490b3f3f6f22bcbe86d09d4bdecaabadc562cf8c827d47036369201a6002d9dc2c1f03
SSDEEP

384:bm74uGLLQRcsdeQ72ngEr4K7YmE8jo0nrlwfjDUpaSwIfQrk:bm74zYcgT/Ekn0ryfjR1IfQrk

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/4892-0-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0008000000023437-13.dat	CryptoLocker_rule2
behavioral2/memory/3224-16-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4892-18-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3224-27-0x0000000008000000-0x000000000800D000-memory.dmp	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-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation	2024-06-03_1ee7d737b8989996214df4464053d02b_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3224	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 4892 wrote to memory of 3224	4892	2024-06-03_1ee7d737b8989996214df4464053d02b_cryptolocker.exe	83
PID 4892 wrote to memory of 3224	4892	2024-06-03_1ee7d737b8989996214df4464053d02b_cryptolocker.exe	83
PID 4892 wrote to memory of 3224	4892	2024-06-03_1ee7d737b8989996214df4464053d02b_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-06-03_1ee7d737b8989996214df4464053d02b_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-03_1ee7d737b8989996214df4464053d02b_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4892
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:3224

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
46KB

MD5
ecbdd5e4be06322733c7d9fc5a71f634

SHA1
e97ad94839e340438c8a8c1ab11c639167efacd5

SHA256
ce4922b57faf8b20c9ab14afd658c17a084ea9cbfb32ab7358bc39ffce0d4240

SHA512
5df2540227bbc1bf3d60258aa40f6972d319f63484846ac8cf1bef94062f0acb75bfd11aa9c030bf452186d0c2889ebfb2de0867fe8975164d4f2cf51e353a41

Download Submit
memory/3224-16-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download
memory/3224-20-0x0000000002160000-0x0000000002166000-memory.dmp

Filesize
24KB

Download
memory/3224-21-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download
memory/3224-27-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download
memory/4892-0-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download
memory/4892-1-0x0000000002250000-0x0000000002256000-memory.dmp

Filesize
24KB

Download
memory/4892-2-0x0000000002300000-0x0000000002306000-memory.dmp

Filesize
24KB

Download
memory/4892-9-0x0000000002250000-0x0000000002256000-memory.dmp

Filesize
24KB

Download
memory/4892-18-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download