a79f26939b0725d03b861cc7ff1e585787de02d85cf1fb6bbcfd0cd17967a2d0

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
24-05-2024 04:05

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General

Target

2024-05-24_cec85a4101a8e7156c508e70d19a3be9_cryptolocker.exe
Size

41KB
MD5

cec85a4101a8e7156c508e70d19a3be9
SHA1

7390fb97f9f17996f94e0bdbda2888af145c6773
SHA256

a79f26939b0725d03b861cc7ff1e585787de02d85cf1fb6bbcfd0cd17967a2d0
SHA512

850b98e9ce6a2d5dba8f188362c62b518a121213382773a9051c214174a0c6ea1bc3e0b782eae3ddbd2d198c7faee3d87821aa622e0b196aff1ccd4c023f315c
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBaac4HK/wSvuQTCyD/95f:X6QFElP6n+gJQMOtEvwDpjBsYK/fbDFh

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0006000000023270-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0006000000023270-12.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-1-5-21-2539840389-1261165778-1087677076-1000\Control Panel\International\Geo\Nation	2024-05-24_cec85a4101a8e7156c508e70d19a3be9_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4600	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 4268 wrote to memory of 4600	4268	2024-05-24_cec85a4101a8e7156c508e70d19a3be9_cryptolocker.exe	83
PID 4268 wrote to memory of 4600	4268	2024-05-24_cec85a4101a8e7156c508e70d19a3be9_cryptolocker.exe	83
PID 4268 wrote to memory of 4600	4268	2024-05-24_cec85a4101a8e7156c508e70d19a3be9_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-05-24_cec85a4101a8e7156c508e70d19a3be9_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-24_cec85a4101a8e7156c508e70d19a3be9_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4268
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4600

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
42KB

MD5
fff9fbddd27152e1d5cb3f4557f93a51

SHA1
054bec6abccd0b7281acc04b8c11f57307011594

SHA256
961d8ee0775c8407604b88ba9ab4bf987e3de961c4c8cf3f64586978d58259d6

SHA512
db4c1ad9b3c6f12a97a47f23ec31c2fda1aaf45f03f566cc4c47e2c42b140963eef77ac3cf480f7add62ccd672ad610160eab6aeb4646546fb77e87a0f8cbb38

Download Submit
memory/4268-0-0x00000000007B0000-0x00000000007B6000-memory.dmp

Filesize
24KB

Download
memory/4268-1-0x00000000007D0000-0x00000000007D6000-memory.dmp

Filesize
24KB

Download
memory/4268-8-0x00000000007B0000-0x00000000007B6000-memory.dmp

Filesize
24KB

Download
memory/4600-23-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/4600-17-0x00000000006E0000-0x00000000006E6000-memory.dmp

Filesize
24KB

Download