ef54da4f4003ec63e14f3a2e077b284e288226144003626c09501d6b2401468b

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
05-06-2024 04:32

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General

Target

2024-06-05_5d80bf5710149671ced24ecb6fb03b60_cryptolocker.exe
Size

97KB
MD5

5d80bf5710149671ced24ecb6fb03b60
SHA1

efa74a3979862f3f79a858ab69301141a5764121
SHA256

ef54da4f4003ec63e14f3a2e077b284e288226144003626c09501d6b2401468b
SHA512

4f312f49d044cf0a45511ad2ce0cd31f452522eac9535997e9ec072127de73ff57c34c13bc4fdb1dde6e4cf3be72d0b30206967269c0351ce17f6cbecb59e843
SSDEEP

1536:Z6QFElP6n+gMQMOtEvwDpjQGYQbN/PKwNC4wrH:Z6a+pOtEvwDpjtzu

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0006000000023298-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0006000000023298-12.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-1-5-21-1162180587-977231257-2194346871-1000\Control Panel\International\Geo\Nation	2024-06-05_5d80bf5710149671ced24ecb6fb03b60_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1104	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 4532 wrote to memory of 1104	4532	2024-06-05_5d80bf5710149671ced24ecb6fb03b60_cryptolocker.exe	81
PID 4532 wrote to memory of 1104	4532	2024-06-05_5d80bf5710149671ced24ecb6fb03b60_cryptolocker.exe	81
PID 4532 wrote to memory of 1104	4532	2024-06-05_5d80bf5710149671ced24ecb6fb03b60_cryptolocker.exe	81

C:\Users\Admin\AppData\Local\Temp\2024-06-05_5d80bf5710149671ced24ecb6fb03b60_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-05_5d80bf5710149671ced24ecb6fb03b60_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4532
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1104

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
ff726d739fac93f47c2e972dda931316

SHA1
755cc62570921dd7249925411ea108668e78559f

SHA256
d6613e53ea6144605080885f73d63b2aeb82e81cae86ae3365cd948d4d5cd3b5

SHA512
7830930d45aa8141dcabe1a2054e350c5cca0a41b92f217eec6d28a0179c73bf0048e8de80a330371398d9d910ee4a2534b73c8189177dbc1321bda9241e2d91

Download Submit
memory/1104-23-0x00000000005C0000-0x00000000005C6000-memory.dmp

Filesize
24KB

Download
memory/1104-17-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/4532-0-0x00000000007B0000-0x00000000007B6000-memory.dmp

Filesize
24KB

Download
memory/4532-1-0x00000000007D0000-0x00000000007D6000-memory.dmp

Filesize
24KB

Download
memory/4532-8-0x00000000007B0000-0x00000000007B6000-memory.dmp

Filesize
24KB

Download