e0ae79b19af7e834effedb9d02bf6fc8d24337f4e532a9fde85d05b44af33c1c

Analysis

max time kernel
146s
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
15/03/2024, 10:01

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General

Target

2024-03-15_b58fb2b88d7217fc71fcf44977203c64_cryptolocker.exe
Size

61KB
MD5

b58fb2b88d7217fc71fcf44977203c64
SHA1

47ebe6ab8e2b4b24a23174c8315c2c8c778e4ba7
SHA256

e0ae79b19af7e834effedb9d02bf6fc8d24337f4e532a9fde85d05b44af33c1c
SHA512

28a01e79544cad510b085607c21e94b4752adf7c5f4aef719ddb1350c501985e4ea2a34107966ee3d13af8f61bab551bb104232cfc0496b8f44a978ae3efadb6
SSDEEP

1536:X6QFElP6n+gJQMOtEvwDpjBccD2RuoNmuBLZ/xblzod:X6a+SOtEvwDpjBrO0

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000002322e-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000002322e-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-1-5-21-513485977-2495024337-1260977654-1000\Control Panel\International\Geo\Nation	2024-03-15_b58fb2b88d7217fc71fcf44977203c64_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1632	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 2652 wrote to memory of 1632	2652	2024-03-15_b58fb2b88d7217fc71fcf44977203c64_cryptolocker.exe	89
PID 2652 wrote to memory of 1632	2652	2024-03-15_b58fb2b88d7217fc71fcf44977203c64_cryptolocker.exe	89
PID 2652 wrote to memory of 1632	2652	2024-03-15_b58fb2b88d7217fc71fcf44977203c64_cryptolocker.exe	89

C:\Users\Admin\AppData\Local\Temp\2024-03-15_b58fb2b88d7217fc71fcf44977203c64_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-15_b58fb2b88d7217fc71fcf44977203c64_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2652
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1632

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
62KB

MD5
d0eb36854db136157a6d62c5fbd02fd9

SHA1
3bf8765f0f29ef098a655b059d340ef3f74dc8f4

SHA256
2f31e7cd59a5c1f9c820f400401c17328edb0ca1d91ef1357b71cb189656ba56

SHA512
24697597834cf9992154d97c1f7190429ec8b17e2a4ce4d3bb9127583c51447b837f3eb898d2e48487dc623babed8902219e9cae3a65ca88d2d3f193bdbc6c8a

Download Submit
memory/2652-0-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/2652-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/2652-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download