4b943fcd1fad607a7d769f215743ddbd2b68242e5213f31d4fa87dc9f6b21a60

Analysis

max time kernel
148s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
16/05/2024, 21:28

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General

Target

2024-05-16_532295e6aa8fc61b7b169437db841375_cryptolocker.exe
Size

38KB
MD5

532295e6aa8fc61b7b169437db841375
SHA1

dd92797d2a5e88e9ac5ac701b7744297c1819c1f
SHA256

4b943fcd1fad607a7d769f215743ddbd2b68242e5213f31d4fa87dc9f6b21a60
SHA512

283ab773b6f47079d121aa79b02c83bfaf4fabbc86d3cb3249afb544bce467fc7942e64db243b2719e157fe8cf5db91398912840a22175e0ba43748836b8a3cc
SSDEEP

768:qUmnjFom/kLyMro2GtOOtEvwDpjeMLam5axK3Ai:qUmnpomddpMOtEvwDpjjaYaQZ

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/1652-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0007000000023276-13.dat	CryptoLocker_rule2
behavioral2/memory/1004-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1652-19-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1004-28-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral2/memory/1652-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x0007000000023276-13.dat	CryptoLocker_set1
behavioral2/memory/1004-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/1652-19-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/1004-28-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral2/memory/1652-0-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral2/files/0x0007000000023276-13.dat	UPX
behavioral2/memory/1004-17-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral2/memory/1652-19-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral2/memory/1004-28-0x0000000000500000-0x000000000050F000-memory.dmp	UPX

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-1-5-21-3558294865-3673844354-2255444939-1000\Control Panel\International\Geo\Nation	2024-05-16_532295e6aa8fc61b7b169437db841375_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1004	asih.exe

UPX packed file 5 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/1652-0-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/files/0x0007000000023276-13.dat	upx
behavioral2/memory/1004-17-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/memory/1652-19-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/memory/1004-28-0x0000000000500000-0x000000000050F000-memory.dmp	upx

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 1652 wrote to memory of 1004	1652	2024-05-16_532295e6aa8fc61b7b169437db841375_cryptolocker.exe	83
PID 1652 wrote to memory of 1004	1652	2024-05-16_532295e6aa8fc61b7b169437db841375_cryptolocker.exe	83
PID 1652 wrote to memory of 1004	1652	2024-05-16_532295e6aa8fc61b7b169437db841375_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-05-16_532295e6aa8fc61b7b169437db841375_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-16_532295e6aa8fc61b7b169437db841375_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1652
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1004

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
38KB

MD5
fb0675bd8054f26a9484f8346c105f6e

SHA1
be1ddd67a29fd4d6402bd57207283460c4f15df7

SHA256
bde4a30e2ceeba259bc9140e8b0f26e9c78bde418f2342a4190381986f92bb14

SHA512
2238ca690f0f186745edd837b5675c85a676e03b18a10991285b491a97439d8944191e69f03ec158f453c0852a8dd44d0a9fd3c55a0981ad22f601b6ecb591ff

Download Submit
memory/1004-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1004-21-0x0000000000870000-0x0000000000876000-memory.dmp

Filesize
24KB

Download
memory/1004-27-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/1004-28-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1652-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1652-1-0x0000000000730000-0x0000000000736000-memory.dmp

Filesize
24KB

Download
memory/1652-2-0x0000000000750000-0x0000000000756000-memory.dmp

Filesize
24KB

Download
memory/1652-9-0x0000000000730000-0x0000000000736000-memory.dmp

Filesize
24KB

Download
memory/1652-19-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download