4e4d81a81101880e3f1216ec89a7c3db85e0cbf883875e8060bcbf98d0c95631

Analysis

max time kernel
70s
max time network
146s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
08/06/2024, 00:31

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General

Target

2024-06-08_6032943f85354850966b9743e330e86d_cryptolocker.exe
Size

36KB
MD5

6032943f85354850966b9743e330e86d
SHA1

395a5503db983ff42e5642ef6a104efbafc15381
SHA256

4e4d81a81101880e3f1216ec89a7c3db85e0cbf883875e8060bcbf98d0c95631
SHA512

fa477bc03c27d371084cc27f7d7de26fe582270f630fca3c2eea252c2cdd63b4d6c80d919d6a7f6f716f7df2ca52442c250c1fa6001da2f16feded0715cc4241
SSDEEP

384:bA74uGLLQRcsdeQ72ngEr4K7YmE8j60nrlwfjDUgIunIVpeNs23mAA6lx1hun:bA74zYcgT/Ekd0ryfjPIunqpeNswm64

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000800000002348c-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-1-5-21-3571316656-3665257725-2415531812-1000\Control Panel\International\Geo\Nation	2024-06-08_6032943f85354850966b9743e330e86d_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
808	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 4836 wrote to memory of 808	4836	2024-06-08_6032943f85354850966b9743e330e86d_cryptolocker.exe	82
PID 4836 wrote to memory of 808	4836	2024-06-08_6032943f85354850966b9743e330e86d_cryptolocker.exe	82
PID 4836 wrote to memory of 808	4836	2024-06-08_6032943f85354850966b9743e330e86d_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-06-08_6032943f85354850966b9743e330e86d_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-08_6032943f85354850966b9743e330e86d_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4836
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:808

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
37KB

MD5
b6f6607fdd50c04db0773f72c03c4748

SHA1
fb2b0ec333b14214b707451cc7ae7d88e48c8e22

SHA256
23dee846678c8c4d2d563290c64fdff0f3f4f4b25e2a3246118284fd9e467da9

SHA512
f28ed17d45716f5ea2ab0546b7a129448c63dcf8a5fe0d0cf340fa8d0c616cda70a8093506578f90e67d3f30f4594f3cb4a2fecb52dff853ea4ccba0855bfdd5

Download Submit
memory/808-17-0x00000000020A0000-0x00000000020A6000-memory.dmp

Filesize
24KB

Download
memory/808-18-0x0000000003010000-0x0000000003016000-memory.dmp

Filesize
24KB

Download
memory/4836-0-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/4836-1-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download
memory/4836-8-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download