cf488cd3731d05806b7334b2e6f8b57d947eab17d439be0c0be58b9e9f506a0d

Analysis

max time kernel
148s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
05/04/2024, 15:38

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General

Target

2024-04-05_6ace1909b66e50b571440485fd8ded79_cryptolocker.exe
Size

117KB
MD5

6ace1909b66e50b571440485fd8ded79
SHA1

eaee3e4b9321b413459da0be45d787b63e744f49
SHA256

cf488cd3731d05806b7334b2e6f8b57d947eab17d439be0c0be58b9e9f506a0d
SHA512

2a0666edfba678010326ed32301fdd5f99d68e996d7561230dbc7ad3c128baeb942980e29f9b12291e454d0e8e985c26b65d44b7e3a61ae6d89188f6ac61bb2c
SSDEEP

1536:z6QFElP6n+gKmddpMOtEvwDpj3GYQbN/PKwNgp010:z6a+CdOOtEvwDpjczi

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/4192-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000a000000023209-13.dat	CryptoLocker_rule2
behavioral2/memory/4192-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4524-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/4192-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000a000000023209-13.dat	CryptoLocker_set1
behavioral2/memory/4192-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/4524-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral2/memory/4192-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/files/0x000a000000023209-13.dat	UPX
behavioral2/memory/4192-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/4524-26-0x0000000000500000-0x0000000000510000-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-1-5-21-399997616-3400990511-967324271-1000\Control Panel\International\Geo\Nation	2024-04-05_6ace1909b66e50b571440485fd8ded79_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4524	asih.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4192-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x000a000000023209-13.dat	upx
behavioral2/memory/4192-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/4524-26-0x0000000000500000-0x0000000000510000-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 4192 wrote to memory of 4524	4192	2024-04-05_6ace1909b66e50b571440485fd8ded79_cryptolocker.exe	88
PID 4192 wrote to memory of 4524	4192	2024-04-05_6ace1909b66e50b571440485fd8ded79_cryptolocker.exe	88
PID 4192 wrote to memory of 4524	4192	2024-04-05_6ace1909b66e50b571440485fd8ded79_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-04-05_6ace1909b66e50b571440485fd8ded79_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-05_6ace1909b66e50b571440485fd8ded79_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4192
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4524

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
118KB

MD5
98c7481c7432c2160514b56c8e6d0750

SHA1
1659466c3bed09708d44687bed57fb9814c2bf1a

SHA256
23f5f99911128011fd57475fc87da7130c0e95bbd33ea06130436cafdaa00ea3

SHA512
768b3def48230d5a5a685f2857f4c8142024c4d428462b0d5adcec8b7afd7932c9bc3f8e620646e4bfefa7de23ab99b2ba255fab1e83aaaa09a710c4f41b0653

Download Submit
memory/4192-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4192-1-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/4192-2-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/4192-3-0x00000000005C0000-0x00000000005C6000-memory.dmp

Filesize
24KB

Download
memory/4192-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4524-19-0x0000000002090000-0x0000000002096000-memory.dmp

Filesize
24KB

Download
memory/4524-21-0x0000000001F20000-0x0000000001F26000-memory.dmp

Filesize
24KB

Download
memory/4524-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download