599d0f1f85d606dac4d4c98efcc3e9f0162c0d53321143dfaab07fc2fb0454b4

Analysis

max time kernel
149s
max time network
148s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
18/04/2024, 14:28

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General

Target

2024-04-18_a8d868015f7e24b2465e0965b9813c7e_cryptolocker.exe
Size

389KB
MD5

a8d868015f7e24b2465e0965b9813c7e
SHA1

15177c110117f13c6d4511a19afd2a8560096fcd
SHA256

599d0f1f85d606dac4d4c98efcc3e9f0162c0d53321143dfaab07fc2fb0454b4
SHA512

80dcf56b2599d9f89365a3746dbccd26687a1797396c240a89dc720fa7e547c3c831fd7b3e9425e71bc0d3f185164bff3a45b54abbdf787db8c79d52561f43c2
SSDEEP

6144:nnOsaQgAOjvrZFODJjBz3j1jTqQy6v2GGnugOtihzXb:nnOflT/ZFIjBz3xjTxynGUOUhXb

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000300000001e9b1-12.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-1-5-21-4084619521-2220719027-1909462854-1000\Control Panel\International\Geo\Nation	2024-04-18_a8d868015f7e24b2465e0965b9813c7e_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1164	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 4892 wrote to memory of 1164	4892	2024-04-18_a8d868015f7e24b2465e0965b9813c7e_cryptolocker.exe	85
PID 4892 wrote to memory of 1164	4892	2024-04-18_a8d868015f7e24b2465e0965b9813c7e_cryptolocker.exe	85
PID 4892 wrote to memory of 1164	4892	2024-04-18_a8d868015f7e24b2465e0965b9813c7e_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-04-18_a8d868015f7e24b2465e0965b9813c7e_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-18_a8d868015f7e24b2465e0965b9813c7e_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4892
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:1164

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
389KB

MD5
639ffb501498ee7ac56418f4b838a2d7

SHA1
6f8c395aeccc7ee76e2425324d465c1257ccc168

SHA256
7e82e838767913ac49ddaecc5cd8f375bbfd009d6bb5b8769ec95e81c26c74f7

SHA512
57c233f955e9a31ddbce3e4843c6f81c0c05435ce9b8694d46840bc1392a439bb968e116035592e751df85a75f451a2580d76615c82043c7b87afe7de67f2d6c

Download Submit
memory/1164-17-0x0000000003010000-0x0000000003016000-memory.dmp

Filesize
24KB

Download
memory/1164-22-0x0000000002210000-0x0000000002216000-memory.dmp

Filesize
24KB

Download
memory/4892-0-0x0000000000680000-0x0000000000686000-memory.dmp

Filesize
24KB

Download
memory/4892-1-0x0000000000680000-0x0000000000686000-memory.dmp

Filesize
24KB

Download
memory/4892-2-0x00000000022C0000-0x00000000022C6000-memory.dmp

Filesize
24KB

Download