c907b13acd66e383bcc1b5922348bdcacd3bdd77f821f9e306458a72af670c1f

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
27-03-2024 10:41

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General

Target

2024-03-27_be153d50e8f25fba9badfcc901abf86c_cryptolocker.exe
Size

44KB
MD5

be153d50e8f25fba9badfcc901abf86c
SHA1

027ee8e08c9eef78d46982dd48718b47bd066dde
SHA256

c907b13acd66e383bcc1b5922348bdcacd3bdd77f821f9e306458a72af670c1f
SHA512

4c858cb9fe61f7142cce99f4e7da1cb3c3d299680264a0f92028a5e1a29306f242a480264d035f352abd2426e9f8ee22bcc7f31c2c2e7b82c9d79fcb277b455d
SSDEEP

768:V6LsoEEeegiZPvEhHSG+gDYQtOOtEvwDpj/MLam5aFr7YOzzfm0Exm:V6QFElP6n+gMQMOtEvwDpjyaYaFAh8

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000f00000002313b-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000f00000002313b-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-1-5-21-566096764-1992588923-1249862864-1000\Control Panel\International\Geo\Nation	2024-03-27_be153d50e8f25fba9badfcc901abf86c_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2464	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 1668 wrote to memory of 2464	1668	2024-03-27_be153d50e8f25fba9badfcc901abf86c_cryptolocker.exe	90
PID 1668 wrote to memory of 2464	1668	2024-03-27_be153d50e8f25fba9badfcc901abf86c_cryptolocker.exe	90
PID 1668 wrote to memory of 2464	1668	2024-03-27_be153d50e8f25fba9badfcc901abf86c_cryptolocker.exe	90

C:\Users\Admin\AppData\Local\Temp\2024-03-27_be153d50e8f25fba9badfcc901abf86c_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-27_be153d50e8f25fba9badfcc901abf86c_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1668
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2464

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
44KB

MD5
5bef5b16cb9ddbd5f64935330453b69f

SHA1
81444723cae2a25de262c6a74e8c44c4e7ced945

SHA256
fa51383f4d1fca6e2aa60f44a02a2c1d5f561a8810def7f0e30cbe5664ac537e

SHA512
d529428e03164a20afed3b0470d2b2b5dd2466ad9fcef641f6f8801422bbe3bb884e69be1a0729147cf79818ac8e9ea2923663e5172cb6747e3f9ce06f8442e0

Download Submit
memory/1668-0-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/1668-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/1668-2-0x00000000007D0000-0x00000000007D6000-memory.dmp

Filesize
24KB

Download
memory/2464-17-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/2464-20-0x00000000004C0000-0x00000000004C6000-memory.dmp

Filesize
24KB

Download