44d10207b145ec739964e27948b77afb07618c8a0aa262853de7b3807e0571a7

Analysis

max time kernel
148s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
28-01-2024 01:26

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General

Target

2024-01-28_1b453ff957a3bc73a1f546a3acb03657_cryptolocker.exe
Size

96KB
MD5

1b453ff957a3bc73a1f546a3acb03657
SHA1

dc9749ac7c604901e465e8f49954642df96ceea8
SHA256

44d10207b145ec739964e27948b77afb07618c8a0aa262853de7b3807e0571a7
SHA512

b5567da3c45abb377de96eeb5976b3165f3b94be2d11e5d71dd32222d6317baf9a1a91d78e92d7cdc30dd601efa859e9fc6109726a8db42f2b15605eb5bf9c2e
SSDEEP

1536:26QFElP6n+gBQMOtEvwDpjQGYQbN/PKwNCJp:26a+2OtEvwDpjtzM

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000c000000023172-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000c000000023172-12.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-1-5-21-1497073144-2389943819-3385106915-1000\Control Panel\International\Geo\Nation	2024-01-28_1b453ff957a3bc73a1f546a3acb03657_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4548	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 3176 wrote to memory of 4548	3176	2024-01-28_1b453ff957a3bc73a1f546a3acb03657_cryptolocker.exe	77
PID 3176 wrote to memory of 4548	3176	2024-01-28_1b453ff957a3bc73a1f546a3acb03657_cryptolocker.exe	77
PID 3176 wrote to memory of 4548	3176	2024-01-28_1b453ff957a3bc73a1f546a3acb03657_cryptolocker.exe	77

C:\Users\Admin\AppData\Local\Temp\2024-01-28_1b453ff957a3bc73a1f546a3acb03657_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-28_1b453ff957a3bc73a1f546a3acb03657_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3176
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4548

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
97KB

MD5
60599bd7885684a12bbb311a8992a4a3

SHA1
75162e0efb6b74cfc5216f8cf7dde09d1e5818a4

SHA256
96fe1cdc629ee7dc6bab3ea51c771e1ba2fd8e37566c40fa9535954bd2603c09

SHA512
eb4d934d75f38d6361f5350e0c2419c912b4f249d3c719756d9bf5136db38365034762bb15768da4e1292556241d3860f243db8100e1ecbf4eca62bbe33cab90

Download Submit
memory/3176-0-0x0000000000670000-0x0000000000676000-memory.dmp

Filesize
24KB

Download
memory/3176-2-0x0000000002080000-0x0000000002086000-memory.dmp

Filesize
24KB

Download
memory/3176-1-0x0000000000670000-0x0000000000676000-memory.dmp

Filesize
24KB

Download
memory/4548-17-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/4548-23-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download