cac9a5d099204a294288bfd2d87b675c398819e74bec96f3c8b9efde6a571fc6

Analysis

max time kernel
131s
max time network
147s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
21-05-2024 19:23

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General

Target

2024-05-21_07bef8ad0f8c4e1622adde196c3561de_cryptolocker.exe
Size

39KB
MD5

07bef8ad0f8c4e1622adde196c3561de
SHA1

44ab3f66d9778c26837c4ef1407304475450a62f
SHA256

cac9a5d099204a294288bfd2d87b675c398819e74bec96f3c8b9efde6a571fc6
SHA512

d2a50fa9ca64645f93620bf36f2353ab2debbf841d6e6348bd3ad0445392bc578998d7a65aa6f504be917537994e8fc9df35c6821fc22e09e67ca91bf913e96a
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBVaD3TP7DFCw0A:X6QFElP6n+gJQMOtEvwDpjBmzDU5A

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

Processes:

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

Processes:

2024-05-21_07bef8ad0f8c4e1622adde196c3561de_cryptolocker.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3906287020-2915474608-1755617787-1000\Control Panel\International\Geo\Nation	2024-05-21_07bef8ad0f8c4e1622adde196c3561de_cryptolocker.exe

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

6012 asih.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
6012	asih.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-05-21_07bef8ad0f8c4e1622adde196c3561de_cryptolocker.exe

description	pid	process	target process
PID 4884 wrote to memory of 6012	4884	2024-05-21_07bef8ad0f8c4e1622adde196c3561de_cryptolocker.exe	asih.exe
PID 4884 wrote to memory of 6012	4884	2024-05-21_07bef8ad0f8c4e1622adde196c3561de_cryptolocker.exe	asih.exe
PID 4884 wrote to memory of 6012	4884	2024-05-21_07bef8ad0f8c4e1622adde196c3561de_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-21_07bef8ad0f8c4e1622adde196c3561de_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-21_07bef8ad0f8c4e1622adde196c3561de_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4884

C:\Users\Admin\AppData\Local\Temp\asih.exe
"C:\Users\Admin\AppData\Local\Temp\asih.exe"
2⤵
- Executes dropped EXE
PID:6012

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\asih.exe
Filesize
39KB

MD5
19e2eecadb303d873d5488f1bb96642d

SHA1
16372edd855c956a97aea284f609004da9016838

SHA256
884332ad7ae37ec7c22c858b843f592f3f5ec89358e254a9b7638be9091dd2fc

SHA512
623d26f466f765a3b473b069c5d099dddd2873c7ff43bf1f1ce7e282ca43cb42e5a2a3771c99c7f1bd78202a5a2022902028c1a1e9244c87b32cb22789c11877

Download Submit
memory/4884-0-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/4884-1-0x0000000002070000-0x0000000002076000-memory.dmp

Filesize
24KB

Download
memory/4884-8-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/6012-17-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/6012-23-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download