12556c19d584d337dccf9a1c3e57b0002c466cf0778e50b9bf85dc95ced6c261

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
26-01-2024 19:41

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General

Target

2024-01-26_f96a2c3c88ee77106f3af85a13a78cb7_cryptolocker.exe
Size

36KB
MD5

f96a2c3c88ee77106f3af85a13a78cb7
SHA1

b33a0199c70904e4300f7f524c9dccca8c139301
SHA256

12556c19d584d337dccf9a1c3e57b0002c466cf0778e50b9bf85dc95ced6c261
SHA512

88090dbc51676dd740d1e725400b69d0369a96cd562c550e0f8ec7d622508f5b3d5413e70fe0be76bbfc2dd4993f1000d221be96057210e8492d7cdd3c7a8fa5
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBaac4HKU:X6QFElP6n+gJQMOtEvwDpjBsYz

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000023207-11.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000023207-11.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-1-5-21-3803511929-1339359695-2191195476-1000\Control Panel\International\Geo\Nation	2024-01-26_f96a2c3c88ee77106f3af85a13a78cb7_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2444	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 2876 wrote to memory of 2444	2876	2024-01-26_f96a2c3c88ee77106f3af85a13a78cb7_cryptolocker.exe	88
PID 2876 wrote to memory of 2444	2876	2024-01-26_f96a2c3c88ee77106f3af85a13a78cb7_cryptolocker.exe	88
PID 2876 wrote to memory of 2444	2876	2024-01-26_f96a2c3c88ee77106f3af85a13a78cb7_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-01-26_f96a2c3c88ee77106f3af85a13a78cb7_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-26_f96a2c3c88ee77106f3af85a13a78cb7_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2876
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2444

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
36KB

MD5
baf7dd24122f2310371235d55984deb5

SHA1
6215e228e3f2e30b4e3d3b59d81b2d3ec7aff8fe

SHA256
cc0ea69987f294fad99c42cae1da885db65176fd9db015d2a80a29788f8e331a

SHA512
bb44b13a28e7f52406c8f8fed086309d9b0ef4636fe4212434b763fe4e1797caedc937087ff408c13a9720232ebd530e8f88503cb69f369c74ca5e3d0b613237

Download Submit
memory/2444-17-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/2444-19-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/2876-0-0x00000000007B0000-0x00000000007B6000-memory.dmp

Filesize
24KB

Download
memory/2876-1-0x00000000007B0000-0x00000000007B6000-memory.dmp

Filesize
24KB

Download
memory/2876-2-0x00000000007D0000-0x00000000007D6000-memory.dmp

Filesize
24KB

Download