94def0c62dfad1f61a8ae4be4dd9fda0b865cd1dd8dcbdb86c13f601ccdeac93

Analysis

max time kernel
150s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
12-02-2024 05:36

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General

Target

2024-02-12_433ea622e5db28832bf869bb2ef1bc38_cryptolocker.exe
Size

37KB
MD5

433ea622e5db28832bf869bb2ef1bc38
SHA1

cbb72dded3123dddf3b82f3b0c9f4f0b273c6e13
SHA256

94def0c62dfad1f61a8ae4be4dd9fda0b865cd1dd8dcbdb86c13f601ccdeac93
SHA512

ec21a922474784bfc07f948af1ad0a2e00329323b0813cfaaeaf40853d042c2bc135e934627727bfb94e5ede7ac69f892587ae66c17f19dd5a1518153f679f68
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBaac4HKce:X6QFElP6n+gJQMOtEvwDpjBsYKj

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000002320f-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000002320f-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-1-5-21-996941297-2279405024-2328152752-1000\Control Panel\International\Geo\Nation	2024-02-12_433ea622e5db28832bf869bb2ef1bc38_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
5048	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 3584 wrote to memory of 5048	3584	2024-02-12_433ea622e5db28832bf869bb2ef1bc38_cryptolocker.exe	83
PID 3584 wrote to memory of 5048	3584	2024-02-12_433ea622e5db28832bf869bb2ef1bc38_cryptolocker.exe	83
PID 3584 wrote to memory of 5048	3584	2024-02-12_433ea622e5db28832bf869bb2ef1bc38_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-02-12_433ea622e5db28832bf869bb2ef1bc38_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-12_433ea622e5db28832bf869bb2ef1bc38_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3584
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:5048

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
94a0a9c40681df328a7fb0558caffdf9

SHA1
a833e3e185dac2827e9500b3c699e918abf3696a

SHA256
faf5ea479ba7d92188d7136995f01bbdd0e1f3fcdc7c6bf90b474e99f7317f39

SHA512
0a84f786257a7ef15659bc49faf2d2c3c43df30e8bcb796fb23e740898371d8e4b630e202798403601708afa789808a97e169eccd04a7b6a330f927526d0bd77

Download Submit
memory/3584-0-0x0000000002310000-0x0000000002316000-memory.dmp

Filesize
24KB

Download
memory/3584-1-0x0000000002310000-0x0000000002316000-memory.dmp

Filesize
24KB

Download
memory/3584-2-0x0000000002230000-0x0000000002236000-memory.dmp

Filesize
24KB

Download
memory/5048-17-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/5048-23-0x00000000005C0000-0x00000000005C6000-memory.dmp

Filesize
24KB

Download