911667f5c46b12dcc5044d426753c205d7502e2c6fa56009dd672cd818f76e58

Analysis

max time kernel
150s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
05/03/2024, 14:22

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General

Target

2024-03-05_01e8eda21cf9e0f1bc5d53ab9f2c6452_cryptolocker.exe
Size

55KB
MD5

01e8eda21cf9e0f1bc5d53ab9f2c6452
SHA1

acee30a122bbeab8acb15ca4b8b939ce85d3eecc
SHA256

911667f5c46b12dcc5044d426753c205d7502e2c6fa56009dd672cd818f76e58
SHA512

c7bb3164a5faaa443b479e63091926d24fce656ee22c8c0c4836200f9854cde138a08309b139119ad6b70cbf371d92e411dde7d755f844b9b6ec6c59e463b504
SSDEEP

768:79inqyNR/QtOOtEvwDpjBK/iVTab3GRuv3VylSV/CdvuU:79mqyNhQMOtEvwDpjBPY7xv3g8euU

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/3552-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0004000000022747-13.dat	CryptoLocker_rule2
behavioral2/memory/3552-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4900-18-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/3552-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x0004000000022747-13.dat	CryptoLocker_set1
behavioral2/memory/3552-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/4900-18-0x0000000000500000-0x000000000050F000-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-1-5-21-2727153400-192325109-1870347593-1000\Control Panel\International\Geo\Nation	2024-03-05_01e8eda21cf9e0f1bc5d53ab9f2c6452_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4900	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 3552 wrote to memory of 4900	3552	2024-03-05_01e8eda21cf9e0f1bc5d53ab9f2c6452_cryptolocker.exe	89
PID 3552 wrote to memory of 4900	3552	2024-03-05_01e8eda21cf9e0f1bc5d53ab9f2c6452_cryptolocker.exe	89
PID 3552 wrote to memory of 4900	3552	2024-03-05_01e8eda21cf9e0f1bc5d53ab9f2c6452_cryptolocker.exe	89

C:\Users\Admin\AppData\Local\Temp\2024-03-05_01e8eda21cf9e0f1bc5d53ab9f2c6452_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-05_01e8eda21cf9e0f1bc5d53ab9f2c6452_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3552
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4900

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
55KB

MD5
dc98d3284f404f6b066c9d263e43b211

SHA1
a73dd803950bc2775719079a016ee816e5c8c229

SHA256
a046afd3bb8d2495b2eb8fb016a76ce53e924456c7e020a146782cac83583002

SHA512
06c2ab3555c63d80d9d31c3d050a105317e8e4298c63174e5989f182bdb912d707be1607f21ddf67bf91a8e0ff2e36cfc9acd2c46b2b403d139c956221b3c142

Download Submit
memory/3552-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3552-1-0x0000000002050000-0x0000000002056000-memory.dmp

Filesize
24KB

Download
memory/3552-2-0x0000000002050000-0x0000000002056000-memory.dmp

Filesize
24KB

Download
memory/3552-3-0x0000000002080000-0x0000000002086000-memory.dmp

Filesize
24KB

Download
memory/3552-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/4900-18-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/4900-21-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4900-20-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download