93f3f025f52e88978a648cb7fc298bfa74f9db85caa26ef76da5a0d6871c2e20

Analysis

max time kernel
148s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240221-en
resource tags

arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
submitted
23/02/2024, 05:39

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General

Target

2024-02-23_367c70027416485eb435093a4a6ee5b0_cryptolocker.exe
Size

68KB
MD5

367c70027416485eb435093a4a6ee5b0
SHA1

8f9a4239116680ffdad756354013ac4e62cf8e47
SHA256

93f3f025f52e88978a648cb7fc298bfa74f9db85caa26ef76da5a0d6871c2e20
SHA512

e23261b4f06bb86e609c7634522778f67492a0ea0f645b4d98d2e4b3037c31884ca32e1bbb86c3d8176f4e6648070e8f4f7de1b417a052ac508bd3476aff904d
SSDEEP

1536:Dk/xY0sllyGQMOtEvwDpjwycDtKkQZQRKb61vSbgZ3QzNKU6:DW60sllyWOtEvwDpjwF85A

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 3 IoCs

resource	yara_rule
behavioral2/memory/1528-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000700000002323c-13.dat	CryptoLocker_rule2
behavioral2/memory/1528-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral2/memory/1528-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000700000002323c-13.dat	CryptoLocker_set1
behavioral2/memory/1528-17-0x0000000000500000-0x000000000050B000-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-1-5-21-910440534-423636034-2318342392-1000\Control Panel\International\Geo\Nation	2024-02-23_367c70027416485eb435093a4a6ee5b0_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4340	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 1528 wrote to memory of 4340	1528	2024-02-23_367c70027416485eb435093a4a6ee5b0_cryptolocker.exe	87
PID 1528 wrote to memory of 4340	1528	2024-02-23_367c70027416485eb435093a4a6ee5b0_cryptolocker.exe	87
PID 1528 wrote to memory of 4340	1528	2024-02-23_367c70027416485eb435093a4a6ee5b0_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-02-23_367c70027416485eb435093a4a6ee5b0_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-23_367c70027416485eb435093a4a6ee5b0_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1528
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4340

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
68KB

MD5
4f5ae25d9a59a3fa035d650dd87d3572

SHA1
052892be15d890b8387de2ed2745e395567603ae

SHA256
43681aaff99cb3860db4a224b86b1d668683cc9810b6dfc619fdb112ab5bec44

SHA512
172cdb23a2919c15378b940a4f306476df41acab68a8b67a2c480b278da027c30ff1e6121b769d64d949c2720008e719607bd070224fa58f9aab625bec435eb2

Download Submit
memory/1528-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/1528-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/1528-2-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/1528-3-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/1528-17-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download