aa331e642ea0ebd8144572547b0dadd72c707ac31624aaa098e44f89b8d4d772

Analysis

max time kernel
148s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
19/02/2024, 21:55

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target

2024-02-19_d008cb30e645973564db5ee966403abc_cryptolocker.exe
Size

45KB
MD5

d008cb30e645973564db5ee966403abc
SHA1

428580443cc5bdaea4cb982e9c07fca4f2c9d767
SHA256

aa331e642ea0ebd8144572547b0dadd72c707ac31624aaa098e44f89b8d4d772
SHA512

43c3e317a0f1c788ecbdafb967ec2b29a28251f6e832af8cf0d30ea86a40368e097be03d6c86dbc9c6cbed07147c97ac12bde87b351b8dbc9208e167fb087b0f
SSDEEP

768:79inqyNR/QtOOtEvwDpjBKccJVODvcjpa:79mqyNhQMOtEvwDpjBzckf

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/1504-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0007000000023218-13.dat	CryptoLocker_rule2
behavioral2/memory/4132-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1504-19-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/1504-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x0007000000023218-13.dat	CryptoLocker_set1
behavioral2/memory/4132-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/1504-19-0x0000000000500000-0x000000000050F000-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-1-5-21-3803511929-1339359695-2191195476-1000\Control Panel\International\Geo\Nation	2024-02-19_d008cb30e645973564db5ee966403abc_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4132	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 1504 wrote to memory of 4132	1504	2024-02-19_d008cb30e645973564db5ee966403abc_cryptolocker.exe	84
PID 1504 wrote to memory of 4132	1504	2024-02-19_d008cb30e645973564db5ee966403abc_cryptolocker.exe	84
PID 1504 wrote to memory of 4132	1504	2024-02-19_d008cb30e645973564db5ee966403abc_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-02-19_d008cb30e645973564db5ee966403abc_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-19_d008cb30e645973564db5ee966403abc_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1504
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4132

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

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
45KB

MD5
cf883ae03fcc909a34864ecdac03861c

SHA1
196322853910d6a1945baa7dd60a28ea8bc1adb5

SHA256
3c3477134d5766efb577295d8f363e7fcc8750d81be58bf8f738a33a403e0d4b

SHA512
6da2cbae7cbf584e8e9c948ddf41dac86c5a8da4dd7629f9ab6e43819947d545c07e10495cccb65abb9bfe9f60da0bf77c9cf4e6d7f9e021cc203c141820983a

Download Submit
memory/1504-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1504-1-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/1504-2-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/1504-3-0x0000000000600000-0x0000000000606000-memory.dmp

Filesize
24KB

Download
memory/1504-19-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/4132-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/4132-20-0x00000000005C0000-0x00000000005C6000-memory.dmp

Filesize
24KB

Download
memory/4132-26-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download