0a360d3a92a5dcb7c596a13bbc1146b2c9bda376cefeea968a63f3350d25adb8

Analysis

max time kernel
148s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
23/01/2024, 00:39

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General

Target

2024-01-23_f426d51da0b815e2d868bcec5df775da_cryptolocker.exe
Size

61KB
MD5

f426d51da0b815e2d868bcec5df775da
SHA1

d37ade39560481006f56ba716f1a1d334cd31d7d
SHA256

0a360d3a92a5dcb7c596a13bbc1146b2c9bda376cefeea968a63f3350d25adb8
SHA512

265287a362cbea74da75df44f289dc857c9578ad23e92d279e21c5a258a6140268156bbe9729517b4e011cc41503fe36320e2a49c234ec7921133af40817a4cd
SSDEEP

1536:X6QFElP6n+gJQMOtEvwDpjBccD2RuoNmuBLZ/xEdx:X6a+SOtEvwDpjBrOi

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023215-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023215-12.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-1-5-21-1168293393-3419776239-306423207-1000\Control Panel\International\Geo\Nation	2024-01-23_f426d51da0b815e2d868bcec5df775da_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
800	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 4284 wrote to memory of 800	4284	2024-01-23_f426d51da0b815e2d868bcec5df775da_cryptolocker.exe	86
PID 4284 wrote to memory of 800	4284	2024-01-23_f426d51da0b815e2d868bcec5df775da_cryptolocker.exe	86
PID 4284 wrote to memory of 800	4284	2024-01-23_f426d51da0b815e2d868bcec5df775da_cryptolocker.exe	86

C:\Users\Admin\AppData\Local\Temp\2024-01-23_f426d51da0b815e2d868bcec5df775da_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-23_f426d51da0b815e2d868bcec5df775da_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4284
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:800

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
62KB

MD5
43876ff586202562b720019feea0561b

SHA1
d1a2ff6bc25e70b5cdbf49eab499789d664ae19f

SHA256
1edfd2e3c437654b8c90041d8f5a5e78433df8a3666e7b27dda89b2a2ed527ce

SHA512
891bc93299af493776bdd414b20b101acdffb20b99c29c708d3667f3745fd9b59bb67ab7a431b9e9a59951f17c4ea00e97ec9e007d1bf107b4b8922897e3412c

Download Submit
memory/800-17-0x00000000005D0000-0x00000000005D6000-memory.dmp

Filesize
24KB

Download
memory/800-19-0x0000000000560000-0x0000000000566000-memory.dmp

Filesize
24KB

Download
memory/4284-0-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/4284-1-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/4284-2-0x0000000000600000-0x0000000000606000-memory.dmp

Filesize
24KB

Download