aac34440c3e9599a377413c6b4334ca75e6970dc8c755f22d03a949f814fe5f7

Analysis

max time kernel
149s
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
12/03/2024, 05:49

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General

Target

2024-03-12_a520b8e6be65170368cc329b56c52693_cryptolocker.exe
Size

37KB
MD5

a520b8e6be65170368cc329b56c52693
SHA1

75278167c241bcffd65382c13342b2433f24c0f3
SHA256

aac34440c3e9599a377413c6b4334ca75e6970dc8c755f22d03a949f814fe5f7
SHA512

99578f5ae6fe8cc927aaf2c1185648ac6bc488dca2c5f8cb662141c228d8db21415f572d229499d3e05b44712df1930c4a12dbbb48e5f4e78aadacda14e8e949
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBVaD3TP7DFCwyYoq:X6QFElP6n+gJQMOtEvwDpjBmzDUPy

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000400000001e980-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000400000001e980-12.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-1-5-21-3270530367-132075249-2153716227-1000\Control Panel\International\Geo\Nation	2024-03-12_a520b8e6be65170368cc329b56c52693_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1672	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 784 wrote to memory of 1672	784	2024-03-12_a520b8e6be65170368cc329b56c52693_cryptolocker.exe	89
PID 784 wrote to memory of 1672	784	2024-03-12_a520b8e6be65170368cc329b56c52693_cryptolocker.exe	89
PID 784 wrote to memory of 1672	784	2024-03-12_a520b8e6be65170368cc329b56c52693_cryptolocker.exe	89

C:\Users\Admin\AppData\Local\Temp\2024-03-12_a520b8e6be65170368cc329b56c52693_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-12_a520b8e6be65170368cc329b56c52693_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:784
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1672

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
37KB

MD5
63d6c25d00ffa7a924ba248306d1aa07

SHA1
1eceba1c5c0068f38565a69623c9f3a98e0790c9

SHA256
ccf6df09a8236c5af57da0595223e7a007fc8278dce86d7c7d998a5ec7cd8eeb

SHA512
c6377fd54fe889dac2d71c5e3e9087f8f85129086e0a35a7816317e8dace5c29cfb47f81e668137408d9795174189dc8985f50bf0e9ff7555bee642445a659b3

Download Submit
memory/784-0-0x00000000007F0000-0x00000000007F6000-memory.dmp

Filesize
24KB

Download
memory/784-1-0x00000000007F0000-0x00000000007F6000-memory.dmp

Filesize
24KB

Download
memory/784-2-0x0000000000810000-0x0000000000816000-memory.dmp

Filesize
24KB

Download
memory/1672-17-0x00000000005F0000-0x00000000005F6000-memory.dmp

Filesize
24KB

Download
memory/1672-23-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download