cb40e57788298f5a5f670bbd66c62001e0fd91cd0a77401a5043c1f7887ad45e

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
14/02/2024, 17:21

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General

Target

2024-02-14_a547ee70522b5f36c97dd2b62bef643f_cryptolocker.exe
Size

48KB
MD5

a547ee70522b5f36c97dd2b62bef643f
SHA1

d29acaba6e5a4e8a238130cb2a1404c41ee330d5
SHA256

cb40e57788298f5a5f670bbd66c62001e0fd91cd0a77401a5043c1f7887ad45e
SHA512

3ddba0efc652fb291b7e5bd352037389801aabb5857d8e6e4d0ffbf7309af0c8561aa45f9c03f46f7c14d13ac5068c8512bdb6e2ffccb1ae412a10168bda52b4
SSDEEP

1536:V6QFElP6n+gMQMOtEvwDpjeJQ7pojakNMw:V6a+pOtEvwDpjhw

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023226-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023226-12.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	2024-02-14_a547ee70522b5f36c97dd2b62bef643f_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
5968	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 5700 wrote to memory of 5968	5700	2024-02-14_a547ee70522b5f36c97dd2b62bef643f_cryptolocker.exe	83
PID 5700 wrote to memory of 5968	5700	2024-02-14_a547ee70522b5f36c97dd2b62bef643f_cryptolocker.exe	83
PID 5700 wrote to memory of 5968	5700	2024-02-14_a547ee70522b5f36c97dd2b62bef643f_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-02-14_a547ee70522b5f36c97dd2b62bef643f_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-14_a547ee70522b5f36c97dd2b62bef643f_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:5700
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:5968

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
48KB

MD5
4997c3e15167b39bce1a7916e615791a

SHA1
aaafb0b9ae2c4bc8ca5a5c4b205ba1a57661dda1

SHA256
8878491b08dde5b6a9daf98e04ae44a001f44fe26ed114c76404e1b8900bae5e

SHA512
086ebf2bc9bab925c86a1e290fdff3445d83dda280c2f3215669a18beee15e0e8c774a171a70bac70374181fcbbdba63f1ce5264da71db9a66a6a36cde10a0f6

Download Submit
memory/5700-0-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/5700-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/5700-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download