712fd202cb9fa7bb29ca3cbe98ee1666ff1a6a831689d1d15a8f67ee59de48f4

Analysis

max time kernel
149s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
10/04/2024, 19:31

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General

Target

2024-04-10_71c123b7b14cd25ae73b95da0e5c9f84_cryptolocker.exe
Size

78KB
MD5

71c123b7b14cd25ae73b95da0e5c9f84
SHA1

d3b3fe13eae32dc8897998a61faa29f10bd4a38f
SHA256

712fd202cb9fa7bb29ca3cbe98ee1666ff1a6a831689d1d15a8f67ee59de48f4
SHA512

8b9d9f2c55d5fd3ebc0f1d32f1019a04abf0baeeaeac15a069ee98e8980fa41ef0018202394218bc4a90e668c16524b8b56821ea4d5f5c75121527542e5a2cca
SSDEEP

1536:V6QFElP6n+gMQMOtEvwDpjyaLccVNluoA:V6a+pOtEvwDpjvpW

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023215-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023215-12.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-1-5-21-3045580317-3728985860-206385570-1000\Control Panel\International\Geo\Nation	2024-04-10_71c123b7b14cd25ae73b95da0e5c9f84_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2400	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 5012 wrote to memory of 2400	5012	2024-04-10_71c123b7b14cd25ae73b95da0e5c9f84_cryptolocker.exe	84
PID 5012 wrote to memory of 2400	5012	2024-04-10_71c123b7b14cd25ae73b95da0e5c9f84_cryptolocker.exe	84
PID 5012 wrote to memory of 2400	5012	2024-04-10_71c123b7b14cd25ae73b95da0e5c9f84_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-04-10_71c123b7b14cd25ae73b95da0e5c9f84_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-10_71c123b7b14cd25ae73b95da0e5c9f84_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:5012
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2400

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
78KB

MD5
88335aa575c00ecfab93a74d023a618f

SHA1
72188233eb4e4ee7de3e7281f37c2c5a3f032175

SHA256
55c8d0c5c49b40813e948a146663b9314360960c043ad8a5d4418dc8f8202105

SHA512
5738d4fe9fe7a439c719f2f0e6a8c7dfb4e31c92a9574153470ed15132d2c72c8a52261c2d2009c40692e06bf6b74a7c4f15d82b67396b6cee46466b4881e1ad

Download Submit
memory/2400-17-0x00000000005C0000-0x00000000005C6000-memory.dmp

Filesize
24KB

Download
memory/2400-20-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/5012-0-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/5012-1-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/5012-2-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download