aa4525c30a13c46c1e22ec6d333a11954f8e74f6826f543d94dc050a9e3a45e8

Analysis

max time kernel
165s
max time network
208s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
18/01/2024, 23:17

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General

Target

2024-01-18_bc85a3ecee2eefc63e7a118bcae88524_cryptolocker.exe
Size

61KB
MD5

bc85a3ecee2eefc63e7a118bcae88524
SHA1

6f2624043309e3988dbd72a73939796735956f00
SHA256

aa4525c30a13c46c1e22ec6d333a11954f8e74f6826f543d94dc050a9e3a45e8
SHA512

eefc8253b400340c670d614e13d79b611bbcd31811b9a46622bc5bb0d7267e819fb804afaa237c572199434193f19e17e4316d2a3594b54ebbae4f33fb651d71
SSDEEP

1536:V6QFElP6n+gMQMOtEvwDpjyaLccVCbmho:V6a+pOtEvwDpjv+

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0009000000023125-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0009000000023125-12.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	2024-01-18_bc85a3ecee2eefc63e7a118bcae88524_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1424	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 2072 wrote to memory of 1424	2072	2024-01-18_bc85a3ecee2eefc63e7a118bcae88524_cryptolocker.exe	86
PID 2072 wrote to memory of 1424	2072	2024-01-18_bc85a3ecee2eefc63e7a118bcae88524_cryptolocker.exe	86
PID 2072 wrote to memory of 1424	2072	2024-01-18_bc85a3ecee2eefc63e7a118bcae88524_cryptolocker.exe	86

C:\Users\Admin\AppData\Local\Temp\2024-01-18_bc85a3ecee2eefc63e7a118bcae88524_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-18_bc85a3ecee2eefc63e7a118bcae88524_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2072
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1424

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
61KB

MD5
8250845e32fe7398326f504b422e2e46

SHA1
387fb2e815a72a0be19ead0cb42f93f2c0265330

SHA256
3be3344919bad09490faa637ab18235e43cfccb04d5f73182b9242d87f2e71d3

SHA512
b9e5eba84e08708ab47d682aac47ecec6db4558cdc2d6c4b916a3efdede2948118b61c4576ca28fad47e914eda26e31bd173baff8a90525b7d4716cc2f6a88db

Download Submit
memory/1424-17-0x00000000007D0000-0x00000000007D6000-memory.dmp

Filesize
24KB

Download
memory/1424-20-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/2072-0-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/2072-1-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/2072-2-0x00000000006D0000-0x00000000006D6000-memory.dmp

Filesize
24KB

Download