fdd6e808edfa182361cbb4ef0e2a72589dfc2f8cab953ec4ddcc74f132927d11

Analysis

max time kernel
150s
max time network
147s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
10/06/2024, 21:25

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General

Target

2024-06-10_190c609cfd2ae13d3b34878a77fe1230_cryptolocker.exe
Size

43KB
MD5

190c609cfd2ae13d3b34878a77fe1230
SHA1

be09053dd3ca5b89d781272bc20ad2d70981b56a
SHA256

fdd6e808edfa182361cbb4ef0e2a72589dfc2f8cab953ec4ddcc74f132927d11
SHA512

1552293ef9388dfc4006715388eb4a1ce34d352cbf9787828c21b090b96de68198c078cc1c3ffeeef4095d40164340ba654a37d0e78220b3cced6cdb9b1e8fba
SSDEEP

384:bm74uGLLQRcsdeQ72ngEr4K7YmE8jb0nrlwfjDUETeu:bm74zYcgT/EkM0ryfjlTeu

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/2204-0-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000a0000000233c2-13.dat	CryptoLocker_rule2
behavioral2/memory/3988-18-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2204-17-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3988-27-0x0000000008000000-0x000000000800D000-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-1-5-21-4018855536-2201274732-320770143-1000\Control Panel\International\Geo\Nation	2024-06-10_190c609cfd2ae13d3b34878a77fe1230_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3988	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 2204 wrote to memory of 3988	2204	2024-06-10_190c609cfd2ae13d3b34878a77fe1230_cryptolocker.exe	82
PID 2204 wrote to memory of 3988	2204	2024-06-10_190c609cfd2ae13d3b34878a77fe1230_cryptolocker.exe	82
PID 2204 wrote to memory of 3988	2204	2024-06-10_190c609cfd2ae13d3b34878a77fe1230_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-06-10_190c609cfd2ae13d3b34878a77fe1230_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-10_190c609cfd2ae13d3b34878a77fe1230_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2204
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:3988

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
43KB

MD5
885a8f34851b5044250266008fc6db81

SHA1
d4efc19a4a5faa4af2db88a756a7cd856339f72e

SHA256
bf4a7605061e1b70d7ac660f0445fe11704e6d3a8ae43d4ae4f0e3eb9f14da1f

SHA512
665fc66e63c85dadc5d51eba62328c6eb1e486f02c225743a20d2fd49d0b02fcbbff820e12f1f8aa4b1b083a27c744a08f0f32cd028988aae6aad1cae0f6b73b

Download Submit
memory/2204-0-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download
memory/2204-1-0x00000000007B0000-0x00000000007B6000-memory.dmp

Filesize
24KB

Download
memory/2204-2-0x0000000002400000-0x0000000002406000-memory.dmp

Filesize
24KB

Download
memory/2204-9-0x00000000007B0000-0x00000000007B6000-memory.dmp

Filesize
24KB

Download
memory/2204-17-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download
memory/3988-18-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download
memory/3988-21-0x0000000002380000-0x0000000002386000-memory.dmp

Filesize
24KB

Download
memory/3988-20-0x0000000002350000-0x0000000002356000-memory.dmp

Filesize
24KB

Download
memory/3988-27-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download