7f4979ed92a1efed9e42d9e45d34fb3bca6371bf666af47648c5bdd62d134c6f

Analysis

max time kernel
148s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
28/03/2024, 09:40

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General

Target

2024-03-28_6ad4f21f4f6607f981769d4d6d18d63a_cryptolocker.exe
Size

37KB
MD5

6ad4f21f4f6607f981769d4d6d18d63a
SHA1

dcf7c2d37f5f25cf0c39ef6952caa67e6ce02fb7
SHA256

7f4979ed92a1efed9e42d9e45d34fb3bca6371bf666af47648c5bdd62d134c6f
SHA512

22e4b2bb5038639d63cbcf1dede41923940d6b921a200765332b726dcc48d01a70510ab21b292fa8d528d70ec91d0a053ab5e3766fb47dbdf4e87b0d4fefddf3
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBVaD3TP7DFCp6ldggLg:X6QFElP6n+gJQMOtEvwDpjBmzDUpOdHE

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000023200-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000023200-12.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-1-5-21-399997616-3400990511-967324271-1000\Control Panel\International\Geo\Nation	2024-03-28_6ad4f21f4f6607f981769d4d6d18d63a_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
5036	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 3048 wrote to memory of 5036	3048	2024-03-28_6ad4f21f4f6607f981769d4d6d18d63a_cryptolocker.exe	86
PID 3048 wrote to memory of 5036	3048	2024-03-28_6ad4f21f4f6607f981769d4d6d18d63a_cryptolocker.exe	86
PID 3048 wrote to memory of 5036	3048	2024-03-28_6ad4f21f4f6607f981769d4d6d18d63a_cryptolocker.exe	86

C:\Users\Admin\AppData\Local\Temp\2024-03-28_6ad4f21f4f6607f981769d4d6d18d63a_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-28_6ad4f21f4f6607f981769d4d6d18d63a_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3048
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:5036

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
38KB

MD5
addfdedf4544ab24d18919cf8201dc89

SHA1
710fce80e480909051bf3021f900220b7eb9c831

SHA256
b52fb3bc53db552630da997c18c62f196d5cb59963f49dcf995060ffa02f20d6

SHA512
713f1c1242d0c54d84ae2710f44f8ccbb3ae81ee3a19bb2a258cfd2de3be9976f02462114bf2df860ad2e1b9811c51fdf0495bcc597433c9de1cccd7558050c4

Download Submit
memory/3048-0-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/3048-1-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/3048-2-0x0000000000790000-0x0000000000796000-memory.dmp

Filesize
24KB

Download
memory/5036-17-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/5036-20-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download