e21a615cd5bbe78cba2e661162c9cb9a448ad5d9060bc57b318ecd7d04bdf1e8

Analysis

max time kernel
143s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
01-02-2024 23:47

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General

Target

2024-02-01_fed7f2b6574e976f0014cc2cd57ea1e2_cryptolocker.exe
Size

37KB
MD5

fed7f2b6574e976f0014cc2cd57ea1e2
SHA1

54c47f63e6b8313d92f132307e8c4d1421273126
SHA256

e21a615cd5bbe78cba2e661162c9cb9a448ad5d9060bc57b318ecd7d04bdf1e8
SHA512

56754f889f45b0ab9007fe7d98f166bc3810dca89e7782a01b4a75c641821dba70fba40a6503bd3e905528cb3ab01960784bbeab779523fdc83aea555ae45be7
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBVaD3TP7DFCpUD:X6QFElP6n+gJQMOtEvwDpjBmzDUpg

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0006000000023205-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0006000000023205-12.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-1-5-21-3336304223-2978740688-3645194410-1000\Control Panel\International\Geo\Nation	2024-02-01_fed7f2b6574e976f0014cc2cd57ea1e2_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1568	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 2900 wrote to memory of 1568	2900	2024-02-01_fed7f2b6574e976f0014cc2cd57ea1e2_cryptolocker.exe	84
PID 2900 wrote to memory of 1568	2900	2024-02-01_fed7f2b6574e976f0014cc2cd57ea1e2_cryptolocker.exe	84
PID 2900 wrote to memory of 1568	2900	2024-02-01_fed7f2b6574e976f0014cc2cd57ea1e2_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-02-01_fed7f2b6574e976f0014cc2cd57ea1e2_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-01_fed7f2b6574e976f0014cc2cd57ea1e2_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2900
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1568

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
38KB

MD5
660e77fb5c975ff4d15fcbf11f29b16c

SHA1
6e0df95d07b0a967d16210253e5d3bd0f176b2f8

SHA256
fa683aa1c3ad81f2c812756ca7cac4771b3b89cb655403f0b968f9d7b14e5eff

SHA512
0254ff92eceddb8815a914d2d8b78f2968b0c3ba27ab0c121c8f6b33cf5ac88edee738150cfcc92533c5bbe1a20a4b58cd35575688186f548ccbce2005cb8316

Download Submit
memory/1568-17-0x00000000006D0000-0x00000000006D6000-memory.dmp

Filesize
24KB

Download
memory/1568-18-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/2900-0-0x00000000005F0000-0x00000000005F6000-memory.dmp

Filesize
24KB

Download
memory/2900-1-0x00000000005F0000-0x00000000005F6000-memory.dmp

Filesize
24KB

Download
memory/2900-2-0x00000000021B0000-0x00000000021B6000-memory.dmp

Filesize
24KB

Download