d86f18ba3c96b84bd1c15e6203a4509f5f8ba164601feb1fad0d2476c1c697cc

Analysis

max time kernel
149s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
20/04/2024, 18:46

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General

Target

2024-04-20_891e737a99cd45ad8eb92c32d4c38bcc_cryptolocker.exe
Size

84KB
MD5

891e737a99cd45ad8eb92c32d4c38bcc
SHA1

7389cdab7279f7270de3cf79d084b124ffb97c68
SHA256

d86f18ba3c96b84bd1c15e6203a4509f5f8ba164601feb1fad0d2476c1c697cc
SHA512

7f7404d6ea19a309aa5ed85648c6123c3a901001cc3df1ffd9ce36f77b3bddddb6f7e1ed6a68f94d8d8591bf0e217aee8a0dac12d43bcfc4bbe69920d545d2bf
SSDEEP

768:V6LsoEEeegiZPvEhHSG+gDYQtOOtEvwDpj/MLa5VccPtNw5CS95yFPnYK:V6QFElP6n+gMQMOtEvwDpjyaLccVNl6K

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x001c00000001e97e-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x001c00000001e97e-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-1-5-21-259785868-298165991-4178590326-1000\Control Panel\International\Geo\Nation	2024-04-20_891e737a99cd45ad8eb92c32d4c38bcc_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2300	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 4236 wrote to memory of 2300	4236	2024-04-20_891e737a99cd45ad8eb92c32d4c38bcc_cryptolocker.exe	85
PID 4236 wrote to memory of 2300	4236	2024-04-20_891e737a99cd45ad8eb92c32d4c38bcc_cryptolocker.exe	85
PID 4236 wrote to memory of 2300	4236	2024-04-20_891e737a99cd45ad8eb92c32d4c38bcc_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-04-20_891e737a99cd45ad8eb92c32d4c38bcc_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-20_891e737a99cd45ad8eb92c32d4c38bcc_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4236
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2300

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
85KB

MD5
8a37d549fae9256f13aff36d299fd9e7

SHA1
8dec999eb2f0589ad3c75c9f3edbbeb1d44d4f20

SHA256
16a947a044d61488f21aba6d7eca7c30dda36c27cf5d7056182324bbd0af8c33

SHA512
c1e7a473286e087cc659e749610a23bada78dec92507291c9ad1569164f92aa0e190509eefbea088eef509e757199b3c9993727de54373046ed8ea7ac7b03825

Download Submit
memory/2300-17-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/4236-0-0x00000000004C0000-0x00000000004C6000-memory.dmp

Filesize
24KB

Download
memory/4236-1-0x00000000004C0000-0x00000000004C6000-memory.dmp

Filesize
24KB

Download
memory/4236-2-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download