3f1ee5da19658eec62c0a07f45ea15381d23aa058ceace18ec3ba02f4e3f294f

Analysis

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

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
28/01/2024, 21:44

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General

Target

2024-01-28_13d0a9e94b37fcebbb84ba5421206b26_cryptolocker.exe
Size

41KB
MD5

13d0a9e94b37fcebbb84ba5421206b26
SHA1

6e5f4750480ec73aa7c486300b3b5b4b34284307
SHA256

3f1ee5da19658eec62c0a07f45ea15381d23aa058ceace18ec3ba02f4e3f294f
SHA512

f7b7f245c95f75eb9c52b2355c2690e1b97c9eb770e817b2085c0c253ed76ff5d8a3a2cf464b7d49b09732c1b9fb8ef0523fafab4b62ff0bad18f4c2832d67bb
SSDEEP

768:bgX4zYcgTEu6QOaryfjqDDw3sCu5b+sJx:bgGYcA/53GADw8ClC

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00080000000231d9-12.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-1-5-21-768304381-2824894965-3840216961-1000\Control Panel\International\Geo\Nation	2024-01-28_13d0a9e94b37fcebbb84ba5421206b26_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3324	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 588 wrote to memory of 3324	588	2024-01-28_13d0a9e94b37fcebbb84ba5421206b26_cryptolocker.exe	85
PID 588 wrote to memory of 3324	588	2024-01-28_13d0a9e94b37fcebbb84ba5421206b26_cryptolocker.exe	85
PID 588 wrote to memory of 3324	588	2024-01-28_13d0a9e94b37fcebbb84ba5421206b26_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-01-28_13d0a9e94b37fcebbb84ba5421206b26_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-28_13d0a9e94b37fcebbb84ba5421206b26_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:588
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:3324

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
243a54b3ac28cd8423c82bbf9b577bd5

SHA1
ef1db573ccb4e29898f75d706d015993a243e884

SHA256
2ca0dbd93257e6682cc46afecdc0b99feff875731df27c4c6d2a58751fed6268

SHA512
913492aa6d8b4637e7d833de7aeb516880dda892a1cbf984196c5efdfa314f488705137f873dbaeaeb89713a1cf6e3d3232f17af7bdd11d249b22378dfd8532e

Download Submit
memory/588-0-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/588-1-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/588-2-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download
memory/3324-17-0x0000000002140000-0x0000000002146000-memory.dmp

Filesize
24KB

Download
memory/3324-23-0x0000000000670000-0x0000000000676000-memory.dmp

Filesize
24KB

Download