9d4616f072320879e85f16f3625115f86bf1dfaf4b96f7492202dcddf74668e9

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
17/04/2024, 08:41

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General

Target

2024-04-17_b4c63553fc09a4a7f81b331470b2b230_cryptolocker.exe
Size

40KB
MD5

b4c63553fc09a4a7f81b331470b2b230
SHA1

9c1c3dc502b873f67c5e35ffd29bc3891fed1cc1
SHA256

9d4616f072320879e85f16f3625115f86bf1dfaf4b96f7492202dcddf74668e9
SHA512

a648dacbdf6aae89a36d651e175699000b9f6dc15386da33ff1443aee0d08386fd313ab6ba5e08969e9fc0d9b2a302f0361d186b5000f8ef50de9017c0a56ba6
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBaac4HKcfrW:X6QFElP6n+gJQMOtEvwDpjBsYK6rW

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000300000001e9b1-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000300000001e9b1-12.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-1-5-21-4084619521-2220719027-1909462854-1000\Control Panel\International\Geo\Nation	2024-04-17_b4c63553fc09a4a7f81b331470b2b230_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1400	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 1812 wrote to memory of 1400	1812	2024-04-17_b4c63553fc09a4a7f81b331470b2b230_cryptolocker.exe	86
PID 1812 wrote to memory of 1400	1812	2024-04-17_b4c63553fc09a4a7f81b331470b2b230_cryptolocker.exe	86
PID 1812 wrote to memory of 1400	1812	2024-04-17_b4c63553fc09a4a7f81b331470b2b230_cryptolocker.exe	86

C:\Users\Admin\AppData\Local\Temp\2024-04-17_b4c63553fc09a4a7f81b331470b2b230_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-17_b4c63553fc09a4a7f81b331470b2b230_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1812
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1400

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
40KB

MD5
103c1f9372a60a157b11ea497625acc4

SHA1
718af0c17676bd9cd239bc87dba2aeaaadddfc2a

SHA256
735889366e02a1f4393286b16307937ec2cb50250cc39c37fcee4623e538b59d

SHA512
3597c46d7f893348bff8d4774fff12e35dd775bcda2d3df68bc4ce48738498b4ead40f96ac5a61d93d7551e9b49e736a32c6c32d256d46eb59614f0bdc5fc474

Download Submit
memory/1400-17-0x0000000002100000-0x0000000002106000-memory.dmp

Filesize
24KB

Download
memory/1400-23-0x00000000021E0000-0x00000000021E6000-memory.dmp

Filesize
24KB

Download
memory/1812-0-0x00000000007B0000-0x00000000007B6000-memory.dmp

Filesize
24KB

Download
memory/1812-1-0x00000000007B0000-0x00000000007B6000-memory.dmp

Filesize
24KB

Download
memory/1812-2-0x00000000007D0000-0x00000000007D6000-memory.dmp

Filesize
24KB

Download