86571e3a12f4369c32db5c276d245d10533f0d27a3125d5f20fac5de6bdb7db7

Analysis

max time kernel
150s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
26/03/2024, 23:47

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-03-26_b3b374d924d026ef0aa83e2a9859556c_cryptolocker.exe
Size

33KB
MD5

b3b374d924d026ef0aa83e2a9859556c
SHA1

4354ae36f6d8ad42c4258dc039bfcf33e8a792cf
SHA256

86571e3a12f4369c32db5c276d245d10533f0d27a3125d5f20fac5de6bdb7db7
SHA512

885b0d5a3f513ecd84c3d0e2cfaa67ac1527f90434cef89886a1bce4e6144e66ccd4ba51663f2bcd2df354d20a0b6bfa2096829f5b0403eb0948423c37a7ed4b
SSDEEP

384:bA74uGLLQRcsdeQ72ngEr4K7YmE8j60nrlwfjDUgIunvsYo83:bA74zYcgT/Ekd0ryfjPIunvsi3

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000022745-12.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-1-5-21-3045580317-3728985860-206385570-1000\Control Panel\International\Geo\Nation	2024-03-26_b3b374d924d026ef0aa83e2a9859556c_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2960	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 1116 wrote to memory of 2960	1116	2024-03-26_b3b374d924d026ef0aa83e2a9859556c_cryptolocker.exe	91
PID 1116 wrote to memory of 2960	1116	2024-03-26_b3b374d924d026ef0aa83e2a9859556c_cryptolocker.exe	91
PID 1116 wrote to memory of 2960	1116	2024-03-26_b3b374d924d026ef0aa83e2a9859556c_cryptolocker.exe	91

C:\Users\Admin\AppData\Local\Temp\2024-03-26_b3b374d924d026ef0aa83e2a9859556c_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-26_b3b374d924d026ef0aa83e2a9859556c_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1116
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:2960

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

Loading Replay Monitor...

Downloads

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

Filesize
33KB

MD5
9f7d3b03d73a42f29e70d3ce0a4657d7

SHA1
dcbbf814cdbb533878e393c12d67e44e3432ba51

SHA256
c11c038bf6bf7c61f89d9b3e8cf2510143fadfedd7c60121424d7c709bd78a0b

SHA512
6c4bfb5dfce4a195c23c0dff70fc02b8ff59e9c02c9e95442e2e280dc445d2e3df8f41daf5ce0ea415d32c4150750ad9669268153b151afab82d0e6c8774f38c

Download Submit
memory/1116-0-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/1116-1-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/1116-2-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download
memory/2960-17-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/2960-21-0x0000000002110000-0x0000000002116000-memory.dmp

Filesize
24KB

Download