120a7ed20a3cd2e8633555eb8c54a02e8fc5fec0e79211a515bac0f9af0e9390

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
25/03/2024, 12:57

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General

Target

2024-03-25_bd5b9e293ebde9936211261b70cd6dbf_cryptolocker.exe
Size

47KB
MD5

bd5b9e293ebde9936211261b70cd6dbf
SHA1

5de2b020eb1bf2fd57fde5bc09cee3d364a4b646
SHA256

120a7ed20a3cd2e8633555eb8c54a02e8fc5fec0e79211a515bac0f9af0e9390
SHA512

09c0aa8c5f3aefe13a72b5a6575cd032db024838b9d3b33969409085ef1da58b0659011ed1d154e7c557bc94cd7b1ddc35c52697e23cdc477bf594932dbe19f3
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBaaEqbIu556Blv0:X6QFElP6n+gJQMOtEvwDpjB0GIWSlv0

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000001e59e-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000001e59e-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-1-5-21-399997616-3400990511-967324271-1000\Control Panel\International\Geo\Nation	2024-03-25_bd5b9e293ebde9936211261b70cd6dbf_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4344	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 2440 wrote to memory of 4344	2440	2024-03-25_bd5b9e293ebde9936211261b70cd6dbf_cryptolocker.exe	91
PID 2440 wrote to memory of 4344	2440	2024-03-25_bd5b9e293ebde9936211261b70cd6dbf_cryptolocker.exe	91
PID 2440 wrote to memory of 4344	2440	2024-03-25_bd5b9e293ebde9936211261b70cd6dbf_cryptolocker.exe	91

C:\Users\Admin\AppData\Local\Temp\2024-03-25_bd5b9e293ebde9936211261b70cd6dbf_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-25_bd5b9e293ebde9936211261b70cd6dbf_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2440
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4344

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
47KB

MD5
07696074316244359c97f68844b0c8bb

SHA1
702189f38d5e517e646d8497410d8a0c2366b53d

SHA256
4732743fd840b7004146ddf9e79b2874a08e988c769876e1ed88749cb5f76f46

SHA512
044825172fe5bbd1bc7537197ba5b6f65c3b6101db664fdc31f09d717ee041affc44cba78f83989fa413d459ab56f401619fb7bb33e1fb8e6fa0a5b8f573e2c6

Download Submit
memory/2440-0-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/2440-1-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/2440-2-0x0000000000600000-0x0000000000606000-memory.dmp

Filesize
24KB

Download
memory/4344-17-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/4344-22-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download