b7c4ff4b8fca48c2258723c9442f63bccd1f2aa072b629bb4de6338baa1c1a84

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240221-en
resource tags

arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
submitted
22/02/2024, 19:38

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-02-22_5eb4183b4341b6f34433ea0d925f2e31_cryptolocker.exe
Size

70KB
MD5

5eb4183b4341b6f34433ea0d925f2e31
SHA1

66b89ebbe530268ce5264c04df1cf307d1824623
SHA256

b7c4ff4b8fca48c2258723c9442f63bccd1f2aa072b629bb4de6338baa1c1a84
SHA512

73c78637901613cc356ba33964c0f27d8bdcc665fd3dcbf7135b18258f7c4d33ee7ffdafe7e4f9667e83b6f63f1cde7b64df327a709506b8a6c3598ef0bcc9e3
SSDEEP

1536:Dk/xY0sllyGQMOtEvwDpjwycDtKkQZQRKb61vSbgZ3QzNKUNZOX:DW60sllyWOtEvwDpjwF85g

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 3 IoCs

resource	yara_rule
behavioral2/memory/2532-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0008000000023204-13.dat	CryptoLocker_rule2
behavioral2/memory/2532-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral2/memory/2532-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x0008000000023204-13.dat	CryptoLocker_set1
behavioral2/memory/2532-17-0x0000000000500000-0x000000000050B000-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-1-5-21-3316742141-2240921845-2885234760-1000\Control Panel\International\Geo\Nation	2024-02-22_5eb4183b4341b6f34433ea0d925f2e31_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3880	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 2532 wrote to memory of 3880	2532	2024-02-22_5eb4183b4341b6f34433ea0d925f2e31_cryptolocker.exe	87
PID 2532 wrote to memory of 3880	2532	2024-02-22_5eb4183b4341b6f34433ea0d925f2e31_cryptolocker.exe	87
PID 2532 wrote to memory of 3880	2532	2024-02-22_5eb4183b4341b6f34433ea0d925f2e31_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-02-22_5eb4183b4341b6f34433ea0d925f2e31_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-22_5eb4183b4341b6f34433ea0d925f2e31_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2532
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3880

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
70KB

MD5
24544b5a3c713a3121dd5b386bef606f

SHA1
7705332fa6fbc0ef14fbcafbf3ec0316e939a340

SHA256
e1dd667c5a4311572dc0a60b88af30493d380bc4ae270f95f8a9249c419bb8a9

SHA512
901d6f03e662e11500047aa6b52fba171de9521398a384f402d6fe8fdb1503527d7a23b8e63f631564fb4ff4c80444c5cd04c8eddbb4ebc0e4fb1e36426a2b4c

Download Submit
memory/2532-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2532-1-0x00000000020D0000-0x00000000020D6000-memory.dmp

Filesize
24KB

Download
memory/2532-2-0x00000000020D0000-0x00000000020D6000-memory.dmp

Filesize
24KB

Download
memory/2532-3-0x00000000020F0000-0x00000000020F6000-memory.dmp

Filesize
24KB

Download
memory/2532-17-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/3880-19-0x0000000000680000-0x0000000000686000-memory.dmp

Filesize
24KB

Download
memory/3880-21-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download