d0073274d5cab44389acad711519ff8abaa784f934c6b044e4b56a0814b5090d

Analysis

max time kernel
148s
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 02:30

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General

Target

2024-02-25_41fe73c3f3a7467463090f6867753603_cryptolocker.exe
Size

49KB
MD5

41fe73c3f3a7467463090f6867753603
SHA1

a9b992df173055334c9bd22f3b2215f66d552ab2
SHA256

d0073274d5cab44389acad711519ff8abaa784f934c6b044e4b56a0814b5090d
SHA512

ca6c810707346cae079bb449b451f91d1fef4f4d7eb65b2805cc7e4ec190079114a12060ea596167e5b8b36b3154663d47cf677de9cce598d3923e58e29d6a3e
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBaaEqbIu55id3AMWZq9C:X6QFElP6n+gJQMOtEvwDpjB0GIWiWLcC

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000300000001e96f-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000300000001e96f-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-1-5-21-1392040655-2056082574-619088944-1000\Control Panel\International\Geo\Nation	2024-02-25_41fe73c3f3a7467463090f6867753603_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3716	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 1756 wrote to memory of 3716	1756	2024-02-25_41fe73c3f3a7467463090f6867753603_cryptolocker.exe	88
PID 1756 wrote to memory of 3716	1756	2024-02-25_41fe73c3f3a7467463090f6867753603_cryptolocker.exe	88
PID 1756 wrote to memory of 3716	1756	2024-02-25_41fe73c3f3a7467463090f6867753603_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-02-25_41fe73c3f3a7467463090f6867753603_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-25_41fe73c3f3a7467463090f6867753603_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1756
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3716

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
49KB

MD5
336023de9ee8f2c0c46186024c749f63

SHA1
7757f32c2c0a46208ce367afbe9eca82dcee3d72

SHA256
6ed33e6f664d19a548159cf135033ea2cafe2417f9b759909f266ab443793bc7

SHA512
169620ac3f6a6cba39ede0d9ecb093541eec435c1c88dc92b9a5c4dd25ac13e6190eb360ea1f96a0381e7dc7dbcbb237c9ea4e0d635dd41c93ccb474db4e0df0

Download Submit
memory/1756-0-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download
memory/1756-2-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/1756-1-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download
memory/3716-17-0x0000000002080000-0x0000000002086000-memory.dmp

Filesize
24KB

Download
memory/3716-23-0x0000000002060000-0x0000000002066000-memory.dmp

Filesize
24KB

Download