4b59704c543fb9304b6fef254cc8c2b0a55a236d65acfa876ad019a258de3f6e

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
29/03/2024, 18:05

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General

Target

2024-03-29_f4d3e4277275629abefd5353e3dc6976_cryptolocker.exe
Size

56KB
MD5

f4d3e4277275629abefd5353e3dc6976
SHA1

8cc90d093231d267ed9b2f78d0aca34cff0097ec
SHA256

4b59704c543fb9304b6fef254cc8c2b0a55a236d65acfa876ad019a258de3f6e
SHA512

eb27ecef39036526ddae1ff121a3fe3ec96904f1eaa5109278c3977749cb711da1819be57b2e99ed9b36858288fce76883106afcefd141658314218d6fd49afe
SSDEEP

1536:X6QFElP6n+gJBMOtEvwDpjBtE1yILJ0VoM:X6a+BOtEvwDpjBOxM

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0010000000023139-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0010000000023139-12.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-1-5-21-566096764-1992588923-1249862864-1000\Control Panel\International\Geo\Nation	2024-03-29_f4d3e4277275629abefd5353e3dc6976_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4080	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 856 wrote to memory of 4080	856	2024-03-29_f4d3e4277275629abefd5353e3dc6976_cryptolocker.exe	87
PID 856 wrote to memory of 4080	856	2024-03-29_f4d3e4277275629abefd5353e3dc6976_cryptolocker.exe	87
PID 856 wrote to memory of 4080	856	2024-03-29_f4d3e4277275629abefd5353e3dc6976_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-03-29_f4d3e4277275629abefd5353e3dc6976_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-29_f4d3e4277275629abefd5353e3dc6976_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:856
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4080

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
56KB

MD5
a43e1a7aa6d0f605bb0b5a36c86fc95e

SHA1
51cd74fe1c8f94a7a868c15ec0cecfbebeed29ca

SHA256
e08df89a425b92c0da68d7f04207efac493d0a44541bc16d5035e5331760f49f

SHA512
108317956b2e7ccb0b516d31d67ce96fd86237b014c8ef6d8cc6e3a3b68d8e4fbf7fc19b101bf68f2a58ec3b61d99dbe54a8cd25c511bc161c981ec472f6f810

Download Submit
memory/856-0-0x0000000000690000-0x0000000000696000-memory.dmp

Filesize
24KB

Download
memory/856-1-0x0000000000690000-0x0000000000696000-memory.dmp

Filesize
24KB

Download
memory/856-2-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/4080-23-0x00000000004C0000-0x00000000004C6000-memory.dmp

Filesize
24KB

Download
memory/4080-17-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download