bdded3ae93d10c11de2e835810ff41ef338632d6ce60612a9c03e16bca075ab4

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
11/04/2024, 03:55

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General

Target

2024-04-11_e664ef2ec34df6a1bcf9e0f14936b6c8_cryptolocker.exe
Size

30KB
MD5

e664ef2ec34df6a1bcf9e0f14936b6c8
SHA1

f7fc72c5921ad9f422fa61e35669b9f9af8809c8
SHA256

bdded3ae93d10c11de2e835810ff41ef338632d6ce60612a9c03e16bca075ab4
SHA512

bdfa301397538580568ecf8436bf23b61818ea1ccefaa9979583c7a5f8c5cfda52658eb459ae2b6253574a686f474812cc31bca1a42cf8c8444accb4f6379ded
SSDEEP

384:bG74uGLLQRcsdeQ72ngEr4K7YmE8j60nrlwfjDUGTg:bG74zYcgT/Ekd0ryfjc

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/2948-0-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000b0000000231dc-13.dat	CryptoLocker_rule2
behavioral2/memory/2948-18-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3912-17-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3912-27-0x0000000008000000-0x000000000800A000-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-1-5-21-983155329-280873152-1838004294-1000\Control Panel\International\Geo\Nation	2024-04-11_e664ef2ec34df6a1bcf9e0f14936b6c8_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3912	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 2948 wrote to memory of 3912	2948	2024-04-11_e664ef2ec34df6a1bcf9e0f14936b6c8_cryptolocker.exe	83
PID 2948 wrote to memory of 3912	2948	2024-04-11_e664ef2ec34df6a1bcf9e0f14936b6c8_cryptolocker.exe	83
PID 2948 wrote to memory of 3912	2948	2024-04-11_e664ef2ec34df6a1bcf9e0f14936b6c8_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-04-11_e664ef2ec34df6a1bcf9e0f14936b6c8_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-11_e664ef2ec34df6a1bcf9e0f14936b6c8_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2948
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:3912

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
30KB

MD5
523061661ba5db70d0907b7ae1d37cc5

SHA1
74b2d79da561a76036287115a4fd1eea3274303a

SHA256
a8a6198bf5cfa5bcacdfa5f0eb35b3719c74674d6dcc706990cbea878eae1919

SHA512
ebf64fc26b24077a620972171ca808cdae24b10875c503514037b39c932a43235149959852a55fecb1fe84dc06149a8b0746ca55a931541608e2bdb90a571930

Download Submit
memory/2948-0-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/2948-1-0x0000000000730000-0x0000000000736000-memory.dmp

Filesize
24KB

Download
memory/2948-2-0x0000000000730000-0x0000000000736000-memory.dmp

Filesize
24KB

Download
memory/2948-3-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download
memory/2948-18-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/3912-17-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/3912-20-0x0000000002190000-0x0000000002196000-memory.dmp

Filesize
24KB

Download
memory/3912-22-0x00000000020D0000-0x00000000020D6000-memory.dmp

Filesize
24KB

Download
memory/3912-27-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download