fbd3aad9896f1b0b48669ebeb5380be010aea7facbf702b2bcadc71f6f9a03fc

Analysis

max time kernel
147s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
29/04/2024, 03:52

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General

Target

2024-04-29_d27153a398873e585ff7b18718c76bff_cryptolocker.exe
Size

40KB
MD5

d27153a398873e585ff7b18718c76bff
SHA1

01cc539e7cbd3fc30dc160d2a4ccf82ddfffd058
SHA256

fbd3aad9896f1b0b48669ebeb5380be010aea7facbf702b2bcadc71f6f9a03fc
SHA512

c9c48f4d366282776a24b7e27b49fc9a553cc8595d666dac17c130243db7dfe01d0e454c822185275b0e5fa850e52bf8a686fc4469bb0236189aacdd0f1ff0cd
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBaac4HKcfrd:X6QFElP6n+gJQMOtEvwDpjBsYK6rd

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0006000000023298-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0006000000023298-12.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-1-5-21-1162180587-977231257-2194346871-1000\Control Panel\International\Geo\Nation	2024-04-29_d27153a398873e585ff7b18718c76bff_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4916	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 5052 wrote to memory of 4916	5052	2024-04-29_d27153a398873e585ff7b18718c76bff_cryptolocker.exe	82
PID 5052 wrote to memory of 4916	5052	2024-04-29_d27153a398873e585ff7b18718c76bff_cryptolocker.exe	82
PID 5052 wrote to memory of 4916	5052	2024-04-29_d27153a398873e585ff7b18718c76bff_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-04-29_d27153a398873e585ff7b18718c76bff_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-29_d27153a398873e585ff7b18718c76bff_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:5052
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4916

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
7edd5902e0977118ca640fa08cd3461f

SHA1
df4a1b63f6d5558c9dde88ced8a7262f9b0e88a9

SHA256
5b911bad315b30803ac83f284630f60c963c6f2271f711c654a74700de74eaf1

SHA512
257fcc5a2055a1da087b7fbc43bbc407eda781243cf7692bf966600fd6a253658bc4042a7885bda9dfeca365b45f7eb5f93b8902e4204e4a69235bd288d67c95

Download Submit
memory/4916-23-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4916-17-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/5052-0-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/5052-1-0x00000000006D0000-0x00000000006D6000-memory.dmp

Filesize
24KB

Download
memory/5052-8-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download