62c4a681a4176999c93f946a851f9d75458dd1f306a1c18c391dc812a7c7a1a8

Analysis

max time kernel
149s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
11/02/2024, 15:36

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General

Target

2024-02-11_9a71469cd0c49426eb50da0b5367ef5f_cryptolocker.exe
Size

36KB
MD5

9a71469cd0c49426eb50da0b5367ef5f
SHA1

b8b86e942e22cdcdb82b62df3f71b6a4698fd5c6
SHA256

62c4a681a4176999c93f946a851f9d75458dd1f306a1c18c391dc812a7c7a1a8
SHA512

a4fc99567b14bba6c0fe4e66dbd7b43db7a88ae9a471d7f87c9298502137285047cd73178ef62d4172500e082a8695c725a99b1f9ca77ae504777282530f360c
SSDEEP

768:wHGGaSawqnwjRQ6ESlmFOsPoOdQtOOtEvwDpjm6WaJIOc+UPPryx:YGzl5wjRQBBOsP1QMOtEvwDpjgarMI

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 3 IoCs

resource	yara_rule
behavioral2/memory/1560-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000700000002322e-13.dat	CryptoLocker_rule2
behavioral2/memory/1560-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral2/memory/1560-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000700000002322e-13.dat	CryptoLocker_set1
behavioral2/memory/1560-17-0x0000000000500000-0x000000000050B000-memory.dmp	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-1-5-21-983843758-932321429-1636175382-1000\Control Panel\International\Geo\Nation	2024-02-11_9a71469cd0c49426eb50da0b5367ef5f_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3888	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 1560 wrote to memory of 3888	1560	2024-02-11_9a71469cd0c49426eb50da0b5367ef5f_cryptolocker.exe	83
PID 1560 wrote to memory of 3888	1560	2024-02-11_9a71469cd0c49426eb50da0b5367ef5f_cryptolocker.exe	83
PID 1560 wrote to memory of 3888	1560	2024-02-11_9a71469cd0c49426eb50da0b5367ef5f_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-02-11_9a71469cd0c49426eb50da0b5367ef5f_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-11_9a71469cd0c49426eb50da0b5367ef5f_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1560
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3888

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
36KB

MD5
798a8fd156755dc3dd7c773f814c8930

SHA1
664352a62150a469b4e7c3f8bc95e9a33b2d9661

SHA256
c34e1d42cba73b005d36f1c76683508885ec5cc67e575bf1becc4b4219dcb538

SHA512
76481c709d784f52fd9d0cee6989e05ef197ecf4dbdaeb3779aa43dc22dfd4cc2d84f99e79fa3f3019e315858fb965f2e4607231e7ecc5dcdc31838ab922aacf

Download Submit
memory/1560-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/1560-1-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/1560-2-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/1560-3-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/1560-17-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/3888-19-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/3888-23-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download