9faa9d8748012be8b953658d04d9d1db2f5bbc5f871237fb30c4d36d955cb2f6

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
03/02/2024, 04:34

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General

Target

2024-02-03_ab018e3db7e8223b67e69aa11f3f020e_cryptolocker.exe
Size

48KB
MD5

ab018e3db7e8223b67e69aa11f3f020e
SHA1

181d53ae41c63a2ae51af39861fac787e847397c
SHA256

9faa9d8748012be8b953658d04d9d1db2f5bbc5f871237fb30c4d36d955cb2f6
SHA512

7fba8be570d6a07dac8da961fb3320874bf60e382cafdba3ae39736682bfcfc3cd041dbccce98e62afe361253916c669edbf4571ea12c0eeed52596dad0854a6
SSDEEP

1536:V6QFElP6n+gMQMOtEvwDpjeJQ7pojakNm:V6a+pOtEvwDpjN

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000c000000023172-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000c000000023172-12.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-1-5-21-1497073144-2389943819-3385106915-1000\Control Panel\International\Geo\Nation	2024-02-03_ab018e3db7e8223b67e69aa11f3f020e_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4004	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 2432 wrote to memory of 4004	2432	2024-02-03_ab018e3db7e8223b67e69aa11f3f020e_cryptolocker.exe	85
PID 2432 wrote to memory of 4004	2432	2024-02-03_ab018e3db7e8223b67e69aa11f3f020e_cryptolocker.exe	85
PID 2432 wrote to memory of 4004	2432	2024-02-03_ab018e3db7e8223b67e69aa11f3f020e_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-02-03_ab018e3db7e8223b67e69aa11f3f020e_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-03_ab018e3db7e8223b67e69aa11f3f020e_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2432
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4004

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
49KB

MD5
8ad6f5248a403b61309c6bf99944f462

SHA1
3801892d109d0bf458737615226967d29dc8fdec

SHA256
a4a7707a53e77c18efb605c3dbfc243046e75f061be929f5380de949b05c9ed3

SHA512
de7b69070d2a6a178c041e2fb9920d73bd8b67d1a60cd052bea3a274605bccaca656d084062538728dae4f5c0679559e76c3ddb4f5043ad978362325bffbba1f

Download Submit
memory/2432-0-0x00000000020D0000-0x00000000020D6000-memory.dmp

Filesize
24KB

Download
memory/2432-1-0x00000000020D0000-0x00000000020D6000-memory.dmp

Filesize
24KB

Download
memory/2432-2-0x00000000020F0000-0x00000000020F6000-memory.dmp

Filesize
24KB

Download
memory/4004-23-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download