cdabc84f446ffa31595537c61a9ea2848d864f44a00cc410f6d9920bcdc91d5b

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
28/01/2024, 03:29

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General

Target

2024-01-28_591a3c464577563901a82e9e36d4c975_cryptolocker.exe
Size

81KB
MD5

591a3c464577563901a82e9e36d4c975
SHA1

4aab4428d7c5bb58d80583f548e4cfb900421d25
SHA256

cdabc84f446ffa31595537c61a9ea2848d864f44a00cc410f6d9920bcdc91d5b
SHA512

427e70564cebd1cd71c14e3c4fcb4abf9faa3ae6a5dc5114565e1e1823604e879ef8f740bba23d006a7e866fc0df4d86330675707a7342ddb0add16d4f0a722b
SSDEEP

768:V6LsoEEeegiZPvEhHSG+gDYQtOOtEvwDpj/MLa5VccPtNw5CS95yFPFh6:V6QFElP6n+gMQMOtEvwDpjyaLccVNlV6

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00070000000231f5-11.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x00070000000231f5-11.dat	CryptoLocker_set1

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-1-5-21-1168293393-3419776239-306423207-1000\Control Panel\International\Geo\Nation	2024-01-28_591a3c464577563901a82e9e36d4c975_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
5088	asih.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 800 wrote to memory of 5088	800	2024-01-28_591a3c464577563901a82e9e36d4c975_cryptolocker.exe	85
PID 800 wrote to memory of 5088	800	2024-01-28_591a3c464577563901a82e9e36d4c975_cryptolocker.exe	85
PID 800 wrote to memory of 5088	800	2024-01-28_591a3c464577563901a82e9e36d4c975_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-01-28_591a3c464577563901a82e9e36d4c975_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-28_591a3c464577563901a82e9e36d4c975_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:800
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:5088

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\asih.exe

Filesize
81KB

MD5
3a263c2653af78579c53a9ad887a7130

SHA1
5fe837af89135d9a7ca469d67a32647f56f362cf

SHA256
3c77de2aa2ca7ef2575c5ac476ae70c2a88b34728ffef9d3b4ba67a5d705d06c

SHA512
40cfce383fa6ddd28f077b1c155f3e7f0a8da69df75f7a88dee6825e248a0336c7cd3eb0f2e8e3cc4aec6a4cb83db2ff7e8c010fdb2d95ff42ef644e1dcba4be

Download Submit
memory/800-0-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/800-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/800-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/5088-17-0x00000000007E0000-0x00000000007E6000-memory.dmp

Filesize
24KB

Download
memory/5088-20-0x00000000007B0000-0x00000000007B6000-memory.dmp

Filesize
24KB

Download