7fec827e7870cdfbdf6bb340b42333f9d194cac7e7b1efbc949ea742b6ab7204

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
29-03-2024 03:24

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General

Target

2024-03-29_a6e86e098d34e4a2a804f6b8c449a15c_cryptolocker.exe
Size

40KB
MD5

a6e86e098d34e4a2a804f6b8c449a15c
SHA1

1aeef71e2d98d43049cf306389e612c4004bf7b6
SHA256

7fec827e7870cdfbdf6bb340b42333f9d194cac7e7b1efbc949ea742b6ab7204
SHA512

43c1110d01e972b135d67841494985b8349db5eedef594c46c15c8ba1cc05e9c5a973cad40e24d4774824c014c1113bd295d65b81df877400e592c3c803a2885
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBVaD3TP7DFHuRY:X6QFElP6n+gJQMOtEvwDpjBmzDka

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00090000000226e5-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x00090000000226e5-12.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	2024-03-29_a6e86e098d34e4a2a804f6b8c449a15c_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4496	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 4252 wrote to memory of 4496	4252	2024-03-29_a6e86e098d34e4a2a804f6b8c449a15c_cryptolocker.exe	87
PID 4252 wrote to memory of 4496	4252	2024-03-29_a6e86e098d34e4a2a804f6b8c449a15c_cryptolocker.exe	87
PID 4252 wrote to memory of 4496	4252	2024-03-29_a6e86e098d34e4a2a804f6b8c449a15c_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-03-29_a6e86e098d34e4a2a804f6b8c449a15c_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-29_a6e86e098d34e4a2a804f6b8c449a15c_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4252
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4496

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
40KB

MD5
5d06fcc4ca388d5ec1d8e5e32b4a3d82

SHA1
a811cff4e878136bacd948efdeab94602fdb7a43

SHA256
ca62e03e5c7855494f3c3af1a9181377f7b8f9a2ef84b8342a0f3465ace6def9

SHA512
aec576363114beb210d54c7d1552621526b0a8c177df06a28dff74af879b18818c15bfd25aa1adf4ac29362293c7563e98da5a4c73df1bf3bdf293179a16d62c

Download Submit
memory/4252-0-0x0000000000510000-0x0000000000516000-memory.dmp

Filesize
24KB

Download
memory/4252-1-0x0000000000510000-0x0000000000516000-memory.dmp

Filesize
24KB

Download
memory/4252-2-0x0000000000530000-0x0000000000536000-memory.dmp

Filesize
24KB

Download
memory/4496-17-0x00000000005B0000-0x00000000005B6000-memory.dmp

Filesize
24KB

Download
memory/4496-19-0x0000000000590000-0x0000000000596000-memory.dmp

Filesize
24KB

Download