a5a03d965e5c5466d9a8da06c66c0d3d03b8d529f90d9aee2a971ded2d1a1344

Analysis

max time kernel
150s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240221-en
resource tags

arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
submitted
25/02/2024, 07:24

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General

Target

2024-02-25_09f23d405166656b25ec9e3bc84f3c21_cryptolocker.exe
Size

58KB
MD5

09f23d405166656b25ec9e3bc84f3c21
SHA1

d06311bbefbbec2ba06be3b59f167a0f52cee5d6
SHA256

a5a03d965e5c5466d9a8da06c66c0d3d03b8d529f90d9aee2a971ded2d1a1344
SHA512

d261b65a58b13637186641bb0b29c8c7a1d45c30e6485870e275e370114a148e1f8b25c90978a2de4fc55e79b4b6704c53dc9e492f749b62da578dda78d9714c
SSDEEP

768:V6LsoEEeegiZPvEhHSG+gDYQtOOtEvwDpj/MLa5VccPt547/q6sV:V6QFElP6n+gMQMOtEvwDpjyaLccVCbHC

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00c300000001e848-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x00c300000001e848-12.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-1-5-21-2132103209-3755304320-2959162027-1000\Control Panel\International\Geo\Nation	2024-02-25_09f23d405166656b25ec9e3bc84f3c21_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4432	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 208 wrote to memory of 4432	208	2024-02-25_09f23d405166656b25ec9e3bc84f3c21_cryptolocker.exe	88
PID 208 wrote to memory of 4432	208	2024-02-25_09f23d405166656b25ec9e3bc84f3c21_cryptolocker.exe	88
PID 208 wrote to memory of 4432	208	2024-02-25_09f23d405166656b25ec9e3bc84f3c21_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-02-25_09f23d405166656b25ec9e3bc84f3c21_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-25_09f23d405166656b25ec9e3bc84f3c21_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:208
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4432

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
58KB

MD5
dc55982ba438e84bae18b115ecd694d3

SHA1
20f4286469b57ceba5c8ef78ad2b7a8c0473e709

SHA256
87ae6a2573f631b4118a79685a541cb5bc0a94c8542ec5c6cbab39833a668a37

SHA512
1b2508dacea15acc66416c44a3892564b5f6b315aced0c34300db3712a01f5d46a67983fe5f67e57b55f1686b63014e445c1175a21aa034b528819e9097c4caf

Download Submit
memory/208-0-0x0000000002140000-0x0000000002146000-memory.dmp

Filesize
24KB

Download
memory/208-1-0x0000000002140000-0x0000000002146000-memory.dmp

Filesize
24KB

Download
memory/208-2-0x0000000002050000-0x0000000002056000-memory.dmp

Filesize
24KB

Download
memory/4432-17-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/4432-23-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download