fa20ca0db43c93aced4221697bd2e28fc84375210add0946203abcfb2442b1ce

Analysis

max time kernel
148s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
17/02/2024, 08:26

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General

Target

2024-02-17_22f725360fbdd96afe284ecce1363e87_cryptolocker.exe
Size

31KB
MD5

22f725360fbdd96afe284ecce1363e87
SHA1

75fa69da7def0dd2c1af7eb453a162705b701a1a
SHA256

fa20ca0db43c93aced4221697bd2e28fc84375210add0946203abcfb2442b1ce
SHA512

d4286821ebc321af4313d23228e4352a58728505e5b085cc1dac6746e2a2de0166571a4e7bdb88a03292ac849688ce8d096655aa36811b2060340e5cee87ab5e
SSDEEP

384:bmM0V/YPvnr801TRoUGPh4TKt6ATt1DqgPa3s/zzoCt9Rso8:b7o/2n1TCraU6GD1a4Xt9Rso8

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000c000000023200-12.dat	CryptoLocker_rule2

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-1-5-21-3791175113-1062217823-1177695025-1000\Control Panel\International\Geo\Nation	2024-02-17_22f725360fbdd96afe284ecce1363e87_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2148	rewok.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 2204 wrote to memory of 2148	2204	2024-02-17_22f725360fbdd96afe284ecce1363e87_cryptolocker.exe	87
PID 2204 wrote to memory of 2148	2204	2024-02-17_22f725360fbdd96afe284ecce1363e87_cryptolocker.exe	87
PID 2204 wrote to memory of 2148	2204	2024-02-17_22f725360fbdd96afe284ecce1363e87_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-02-17_22f725360fbdd96afe284ecce1363e87_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-17_22f725360fbdd96afe284ecce1363e87_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2204
- C:\Users\Admin\AppData\Local\Temp\rewok.exe
  "C:\Users\Admin\AppData\Local\Temp\rewok.exe"
  2⤵
  - Executes dropped EXE
  PID:2148

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\rewok.exe

Filesize
31KB

MD5
03ff1bee415b0de99c4f99e09e48615b

SHA1
25cc158fb78b88d488caf29eca37b9a8a1acee6c

SHA256
4293055efa9a5ed8baecaa31bb11334fd8880d24bf50e628bcac705f218aabd9

SHA512
373c7206396ce7427510e1bb7a0aef2fe1cd71da240dbe2d6bb68e4cd4541f8af249e9008204176e6640efdf6688e198bd143cb7faba1f5a006d6a8b90cb9b03

Download Submit
memory/2148-25-0x0000000000600000-0x0000000000606000-memory.dmp

Filesize
24KB

Download
memory/2204-0-0x0000000002350000-0x0000000002356000-memory.dmp

Filesize
24KB

Download
memory/2204-1-0x0000000002350000-0x0000000002356000-memory.dmp

Filesize
24KB

Download
memory/2204-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download