e7f3e45293982d3dddbe445b18b6ef121e7ddd72d79a99a0122a11d89e8ce360

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
26-04-2024 03:33

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General

Target

2024-04-26_33ac938731f9a7ef083a6908ee6907ed_cryptolocker.exe
Size

130KB
MD5

33ac938731f9a7ef083a6908ee6907ed
SHA1

04a3106e9d245c69923f450363f569f46e95d6c3
SHA256

e7f3e45293982d3dddbe445b18b6ef121e7ddd72d79a99a0122a11d89e8ce360
SHA512

515fff68e42412e6c7d34a4b2f8eda4258573e64decf91cf62c6fdd51d7183c271c5e1ce28c6646e21cd31bae2c4f588ca8cced8d87df14b08b55d768d5697db
SSDEEP

1536:u6QFElP6n+gWMOtEvwDpjJGYQbN/PKwNgpwb2CUvu:u6a++OtEvwDpj6z/

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000300000001e970-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000300000001e970-12.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-1-5-21-2177723727-746291240-1644359950-1000\Control Panel\International\Geo\Nation	2024-04-26_33ac938731f9a7ef083a6908ee6907ed_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2900	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 836 wrote to memory of 2900	836	2024-04-26_33ac938731f9a7ef083a6908ee6907ed_cryptolocker.exe	88
PID 836 wrote to memory of 2900	836	2024-04-26_33ac938731f9a7ef083a6908ee6907ed_cryptolocker.exe	88
PID 836 wrote to memory of 2900	836	2024-04-26_33ac938731f9a7ef083a6908ee6907ed_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-04-26_33ac938731f9a7ef083a6908ee6907ed_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-26_33ac938731f9a7ef083a6908ee6907ed_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:836
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2900

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
131KB

MD5
8bd5e7abfc0b6a1061d675b7b857e023

SHA1
b46c46e41950bb97fe6dd449bf78092627cd0348

SHA256
4519232495f6f6560470052889f93a69db2d253b8e26101b851f7fd3bdccc968

SHA512
0af0dce12872cad2cf72f6f2c9f8466389a7d2ee53fc2749a78b1ae99ce88d6497089758282a31a0e241123ed98922b0856fe2f806a42449b01e14200c8ff2a9

Download Submit
memory/836-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/836-0-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/836-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/2900-18-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/2900-17-0x00000000007D0000-0x00000000007D6000-memory.dmp

Filesize
24KB

Download