15f8d74e397725807920e1cada742dcdc6a186b4acb99e3d44d6845787031961

Analysis

max time kernel
139s
max time network
162s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
27/01/2024, 00:46

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General

Target

2024-01-27_f84cb5f033657eb5d4b487709d23b289_cryptolocker.exe
Size

36KB
MD5

f84cb5f033657eb5d4b487709d23b289
SHA1

bfc9543260f6fb6c62dc2689eda0c8c04771ef2a
SHA256

15f8d74e397725807920e1cada742dcdc6a186b4acb99e3d44d6845787031961
SHA512

abb5c9aecfb2171ea5283b3e259d6926aa6fe23c6f37c02c09979eadb5f359631faa06e1a3bfa1e59ee2445e02022da0b1bcd2c6177ba2472c9c42b39cf06155
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBaac4HKg:X6QFElP6n+gJQMOtEvwDpjBsYKg

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0009000000022480-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0009000000022480-12.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-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\International\Geo\Nation	2024-01-27_f84cb5f033657eb5d4b487709d23b289_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4456	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 5060 wrote to memory of 4456	5060	2024-01-27_f84cb5f033657eb5d4b487709d23b289_cryptolocker.exe	91
PID 5060 wrote to memory of 4456	5060	2024-01-27_f84cb5f033657eb5d4b487709d23b289_cryptolocker.exe	91
PID 5060 wrote to memory of 4456	5060	2024-01-27_f84cb5f033657eb5d4b487709d23b289_cryptolocker.exe	91

C:\Users\Admin\AppData\Local\Temp\2024-01-27_f84cb5f033657eb5d4b487709d23b289_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-27_f84cb5f033657eb5d4b487709d23b289_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:5060
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4456

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
36KB

MD5
40091c9d165b7189bc516fe72b158d85

SHA1
4a70593435863b4dd1001603e03d72636fb4c39b

SHA256
95d009fe93f43f112ca20c24b2f3827023ed856ff960f36e84766354b1beb310

SHA512
8480d0584bc81f1ec2c4be18429b719b2e68338be53e1db0d4ce0663feefca3c8b2cd0405430b8e782cc2cc7b2032e2add9a4c91553c2a098f7a7e8efc6a2df8

Download Submit
memory/4456-18-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/4456-17-0x00000000005C0000-0x00000000005C6000-memory.dmp

Filesize
24KB

Download
memory/5060-0-0x0000000002140000-0x0000000002146000-memory.dmp

Filesize
24KB

Download
memory/5060-1-0x0000000002140000-0x0000000002146000-memory.dmp

Filesize
24KB

Download
memory/5060-2-0x0000000002050000-0x0000000002056000-memory.dmp

Filesize
24KB

Download