708531c863b1cf4f3f8f6b2a4c098568d71511abe65047d6a36bae213fada81f

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
20/05/2024, 19:30

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General

Target

2024-05-20_4220bdf77cf6bf82621793966ebe08f8_cryptolocker.exe
Size

71KB
MD5

4220bdf77cf6bf82621793966ebe08f8
SHA1

b028b64e294b3d8e3d690fce0011b0c45203dd3c
SHA256

708531c863b1cf4f3f8f6b2a4c098568d71511abe65047d6a36bae213fada81f
SHA512

ca36db326eb1a5f146a23e8dde613e0c9d9280b60e98b0b7719c7717082a09665b51808e0e5b3e3e2902eaec488f72cc75c6e2758d90d392278cc91522b95afb
SSDEEP

1536:Dk/xY0sllyGQMOtEvwDpjwycDtKkQZQRKb61vSbgZ3QzNKUNZOz:DW60sllyWOtEvwDpjwF85M

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 3 IoCs

resource	yara_rule
behavioral2/memory/1532-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0007000000023305-13.dat	CryptoLocker_rule2
behavioral2/memory/1532-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral2/memory/1532-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x0007000000023305-13.dat	CryptoLocker_set1
behavioral2/memory/1532-17-0x0000000000500000-0x000000000050B000-memory.dmp	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-1-5-21-3571316656-3665257725-2415531812-1000\Control Panel\International\Geo\Nation	2024-05-20_4220bdf77cf6bf82621793966ebe08f8_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4728	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 1532 wrote to memory of 4728	1532	2024-05-20_4220bdf77cf6bf82621793966ebe08f8_cryptolocker.exe	83
PID 1532 wrote to memory of 4728	1532	2024-05-20_4220bdf77cf6bf82621793966ebe08f8_cryptolocker.exe	83
PID 1532 wrote to memory of 4728	1532	2024-05-20_4220bdf77cf6bf82621793966ebe08f8_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-05-20_4220bdf77cf6bf82621793966ebe08f8_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-20_4220bdf77cf6bf82621793966ebe08f8_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1532
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4728

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
71KB

MD5
a6cf40106d759eccb50bd46dbd66d3e7

SHA1
823af1d0bdc87b68e8c61e10199931056f016e7d

SHA256
c838aa28b69998e25397799e089c704d3776fdb168dea086beabf4ed14514157

SHA512
0f5ce19fb65c568203e1487b7babca0393fee056e3263d0615c955e8eb0e0cf47ebaa4f384ec51f8f078d0c0732e4e8cde2566a5a83b94e93109e44cb6667810

Download Submit
memory/1532-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/1532-1-0x00000000007C0000-0x00000000007C6000-memory.dmp

Filesize
24KB

Download
memory/1532-2-0x00000000007E0000-0x00000000007E6000-memory.dmp

Filesize
24KB

Download
memory/1532-9-0x00000000007C0000-0x00000000007C6000-memory.dmp

Filesize
24KB

Download
memory/1532-17-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/4728-19-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/4728-25-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download