5713f347d6a22e5879171d4388d3c408bda326986bc7c608ae5d202e48beea17

Analysis

max time kernel
148s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
20-02-2024 15:01

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General

Target

2024-02-20_be55d81b04464717a060b8a1ec6055f8_cryptolocker.exe
Size

130KB
MD5

be55d81b04464717a060b8a1ec6055f8
SHA1

25c59d6248e0ac9317e51cfa13f858bac9b63e01
SHA256

5713f347d6a22e5879171d4388d3c408bda326986bc7c608ae5d202e48beea17
SHA512

9bcede9382a1151935d09793a4a7affb38d6fa2fd5e2b67628c400357b3a059539e25cf7a2a777b15c53d88425ffc1f00811698c7dc4495250776540f31dec45
SSDEEP

1536:V6QFElP6n+gMQMOtEvwDpjQGYQbN/PKwNgp699GNtL1eds:V6a+pOtEvwDpjtzc

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000e000000023145-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000e000000023145-12.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-1-5-21-1232405761-1209240240-3206092754-1000\Control Panel\International\Geo\Nation	2024-02-20_be55d81b04464717a060b8a1ec6055f8_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2464	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 2676 wrote to memory of 2464	2676	2024-02-20_be55d81b04464717a060b8a1ec6055f8_cryptolocker.exe	85
PID 2676 wrote to memory of 2464	2676	2024-02-20_be55d81b04464717a060b8a1ec6055f8_cryptolocker.exe	85
PID 2676 wrote to memory of 2464	2676	2024-02-20_be55d81b04464717a060b8a1ec6055f8_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-02-20_be55d81b04464717a060b8a1ec6055f8_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-20_be55d81b04464717a060b8a1ec6055f8_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2676
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2464

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
130KB

MD5
0b05d0042529c836ee868f231c738567

SHA1
b199068de25fb01f6b79bb1e47e247b736a11e7b

SHA256
eb51545102aa20047a5be189f576b63e90ac03fdccfe0670abebc63fdda55a0c

SHA512
4c62a426a800bf553343a130f717e9ca0355691df9bd33f18431f30fbadd8c4f7ef218302ade60432dc08f3c91c978d580a8c4d235924a9278f61afe3174c47c

Download Submit
memory/2464-17-0x0000000001FF0000-0x0000000001FF6000-memory.dmp

Filesize
24KB

Download
memory/2464-19-0x0000000000530000-0x0000000000536000-memory.dmp

Filesize
24KB

Download
memory/2676-0-0x00000000021E0000-0x00000000021E6000-memory.dmp

Filesize
24KB

Download
memory/2676-1-0x00000000021E0000-0x00000000021E6000-memory.dmp

Filesize
24KB

Download
memory/2676-2-0x0000000002050000-0x0000000002056000-memory.dmp

Filesize
24KB

Download