93495626c607398182101b53da3530d78c551a553eea407b0671f0cf467eb906

Analysis

max time kernel
149s
max time network
153s
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, 05:05

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General

Target

2024-05-09_a72daeba7734997b3bbc87eda6c33319_cryptolocker.exe
Size

57KB
MD5

a72daeba7734997b3bbc87eda6c33319
SHA1

089b21273dcf136f3bcd1723a0c500a6e1c224ce
SHA256

93495626c607398182101b53da3530d78c551a553eea407b0671f0cf467eb906
SHA512

ad680b089686fbae581846ac56309b0379768ace1c5593201e98250f0cc32d3469129b0f8596dee34dc806fa5d73f18432d1e930a05774adbedbe15a078d977d
SSDEEP

768:79inqyNR/QtOOtEvwDpjBK/iVTab3GRuv3VylsPQQWTa/2wGa:79mqyNhQMOtEvwDpjBPY7xv3gy9WTAca

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/3216-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0007000000023288-13.dat	CryptoLocker_rule2
behavioral2/memory/1588-16-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3216-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/3216-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x0007000000023288-13.dat	CryptoLocker_set1
behavioral2/memory/1588-16-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/3216-17-0x0000000000500000-0x000000000050F000-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-1-5-21-3906287020-2915474608-1755617787-1000\Control Panel\International\Geo\Nation	2024-05-09_a72daeba7734997b3bbc87eda6c33319_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1588	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 3216 wrote to memory of 1588	3216	2024-05-09_a72daeba7734997b3bbc87eda6c33319_cryptolocker.exe	82
PID 3216 wrote to memory of 1588	3216	2024-05-09_a72daeba7734997b3bbc87eda6c33319_cryptolocker.exe	82
PID 3216 wrote to memory of 1588	3216	2024-05-09_a72daeba7734997b3bbc87eda6c33319_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-05-09_a72daeba7734997b3bbc87eda6c33319_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-09_a72daeba7734997b3bbc87eda6c33319_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3216
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1588

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
57KB

MD5
b80a31aa3e1d18d93c3de70f01cf55b5

SHA1
53c6ee2aaf88443222a88959146aec4c2f8e95d8

SHA256
a1bbe3bdfc99a9239912e50a17028b224bfd6f7bc3cb5bfd2b88dda92bf11504

SHA512
e547276c10ceb3a0c16808743a0bdf4203dca6aa1ebd4a07f15ce772ba8440c06e04602891e939492e44def324d830842fbd343a86c98e94fd208690f71e59b2

Download Submit
memory/1588-16-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1588-20-0x0000000002070000-0x0000000002076000-memory.dmp

Filesize
24KB

Download
memory/1588-26-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/3216-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3216-1-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download
memory/3216-3-0x0000000000640000-0x0000000000646000-memory.dmp

Filesize
24KB

Download
memory/3216-9-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download
memory/3216-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download