1e9cd1aa2a507cc9416ada6bc081da0ebf227c4d15c61839c4f29b209adb20b9

Analysis

max time kernel
148s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
09/05/2024, 20:22

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General

Target

2024-05-09_1c9330c1e3f825b93b672102e821a906_cryptolocker.exe
Size

39KB
MD5

1c9330c1e3f825b93b672102e821a906
SHA1

aa9f026989b7f1f73943053fb9f95d6b08f34d83
SHA256

1e9cd1aa2a507cc9416ada6bc081da0ebf227c4d15c61839c4f29b209adb20b9
SHA512

f3943f7751ec62a3d369dfcb9fa6cd865377a989a549b235a076a62c758ea667b0f5eb4f2be7757d55781e812bac09cc907df71958c7dc800364b57273ec8146
SSDEEP

768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkITYaBK:qDdFJy3QMOtEvwDpjjWMl7Tdo

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/2348-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000600000002327c-13.dat	CryptoLocker_rule2
behavioral2/memory/2348-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1244-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1244-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral2/memory/2348-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000600000002327c-13.dat	CryptoLocker_set1
behavioral2/memory/2348-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/1244-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/1244-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral2/memory/2348-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/files/0x000600000002327c-13.dat	UPX
behavioral2/memory/2348-16-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/1244-18-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/1244-27-0x0000000000500000-0x0000000000510000-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-1-5-21-540404634-651139247-2967210625-1000\Control Panel\International\Geo\Nation	2024-05-09_1c9330c1e3f825b93b672102e821a906_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1244	asih.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2348-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x000600000002327c-13.dat	upx
behavioral2/memory/2348-16-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/1244-18-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/1244-27-0x0000000000500000-0x0000000000510000-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 2348 wrote to memory of 1244	2348	2024-05-09_1c9330c1e3f825b93b672102e821a906_cryptolocker.exe	83
PID 2348 wrote to memory of 1244	2348	2024-05-09_1c9330c1e3f825b93b672102e821a906_cryptolocker.exe	83
PID 2348 wrote to memory of 1244	2348	2024-05-09_1c9330c1e3f825b93b672102e821a906_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-05-09_1c9330c1e3f825b93b672102e821a906_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-09_1c9330c1e3f825b93b672102e821a906_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2348
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1244

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
39KB

MD5
3df64c57f21df71fb7f712d82470ada1

SHA1
3f57eecca030c8d8173f10bbff4c2f8bcf230d69

SHA256
ae480c415ecf35fdee9f8bd0bec2fbfe13cbc9d5ef6b3b2493d66dfba66cf554

SHA512
d4068d6554c3db2313432193225d46bb6242ce2b4e39349bf49266388c81c2f5b9466217c19b9419f39fc55b0c7d1986ee35fd7047a244335239f15cb6912248

Download Submit
memory/1244-18-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1244-26-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download
memory/1244-20-0x0000000000680000-0x0000000000686000-memory.dmp

Filesize
24KB

Download
memory/1244-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2348-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2348-1-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/2348-9-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/2348-2-0x00000000006D0000-0x00000000006D6000-memory.dmp

Filesize
24KB

Download
memory/2348-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download