f4b3f6e3ae775ee8f5955acdf5e25faf5592ada72b965cf2889a5216335f1e9b

Analysis

max time kernel
149s
max time network
151s
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, 23:50

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General

Target

2024-03-05_701b8cf594e9e8cb6f8bfe9d9a00aa7f_cryptolocker.exe
Size

74KB
MD5

701b8cf594e9e8cb6f8bfe9d9a00aa7f
SHA1

634e3f47dfa12a7fb4e7c8434be6677f0f241105
SHA256

f4b3f6e3ae775ee8f5955acdf5e25faf5592ada72b965cf2889a5216335f1e9b
SHA512

c4072f0314eeb81c06863ecf4da8c39af6430bd7acc3265fb59a9c602815d2dff7bb4743dd6a313553ce3eeccc7d398bee187bdb8986334310f3d85a38958ff7
SSDEEP

1536:X6QFElP6n+gJQMOtEvwDpjBZYTjipvF2bx1RYF:X6a+SOtEvwDpjBZYvQd2c

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000001e59e-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000001e59e-12.dat	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-1-5-21-399997616-3400990511-967324271-1000\Control Panel\International\Geo\Nation	2024-03-05_701b8cf594e9e8cb6f8bfe9d9a00aa7f_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1372	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 2872 wrote to memory of 1372	2872	2024-03-05_701b8cf594e9e8cb6f8bfe9d9a00aa7f_cryptolocker.exe	87
PID 2872 wrote to memory of 1372	2872	2024-03-05_701b8cf594e9e8cb6f8bfe9d9a00aa7f_cryptolocker.exe	87
PID 2872 wrote to memory of 1372	2872	2024-03-05_701b8cf594e9e8cb6f8bfe9d9a00aa7f_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-03-05_701b8cf594e9e8cb6f8bfe9d9a00aa7f_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-05_701b8cf594e9e8cb6f8bfe9d9a00aa7f_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2872
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1372

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
74KB

MD5
96313e2178ee70c14b1484c7b0cfd883

SHA1
3043a1c5f4d7f1b64498a3e26c24327c4351914d

SHA256
397751b0df2b523640b79f3bb7f6c1f3ea3fb4f8de58e649e1a341be5eabb319

SHA512
804893da7347a991a4e95bf4b4690e1d7a320f55ee22f2d716acc078e1af142acef9bfbd14237f74cce0f2d7d62b3da54b860b6788d48255dd28db4f7b02bf3d

Download Submit
memory/1372-17-0x0000000000750000-0x0000000000756000-memory.dmp

Filesize
24KB

Download
memory/2872-0-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/2872-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/2872-2-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download