b216af75edfc7ac3ed4690add5b6e80281f1b5a575cc1f7d30b742028243e9d1

Analysis

max time kernel
147s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
28/05/2024, 06:29

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General

Target

2024-05-28_b5164236ec8f8b417ef49c51020b9ed8_cryptolocker.exe
Size

46KB
MD5

b5164236ec8f8b417ef49c51020b9ed8
SHA1

4c03d4909d2c036bef134345982552d6b3cd9d08
SHA256

b216af75edfc7ac3ed4690add5b6e80281f1b5a575cc1f7d30b742028243e9d1
SHA512

148927c416f45ea04bde0407b56a011de8c20c2fb61cf7ef5824730f4d756c18d6a41b8d1bad3ef344f63db3be65a3261723373a1c8141795f890602ad6624f8
SSDEEP

768:V6LsoEEeegiZPvEhHSG+gDYQtOOtEvwDpj/MLam5aFr7YOzzfm0EXsP:V6QFElP6n+gMQMOtEvwDpjyaYaFAh3k

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00060000000232a4-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x00060000000232a4-12.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-1-5-21-2804150937-2146708401-419095071-1000\Control Panel\International\Geo\Nation	2024-05-28_b5164236ec8f8b417ef49c51020b9ed8_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1484	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 2996 wrote to memory of 1484	2996	2024-05-28_b5164236ec8f8b417ef49c51020b9ed8_cryptolocker.exe	83
PID 2996 wrote to memory of 1484	2996	2024-05-28_b5164236ec8f8b417ef49c51020b9ed8_cryptolocker.exe	83
PID 2996 wrote to memory of 1484	2996	2024-05-28_b5164236ec8f8b417ef49c51020b9ed8_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-05-28_b5164236ec8f8b417ef49c51020b9ed8_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-28_b5164236ec8f8b417ef49c51020b9ed8_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2996
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1484

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
46KB

MD5
bb1ac9484024f6dad4bb31a5f677a107

SHA1
f4603dbed9f008d24b648fbb0c4f3cf10a687159

SHA256
c38615ece703d583b3c21c7b6b17a316cd7b4e724e32b7cad54f94ddd5fa826e

SHA512
325665f3c2613ac358ae5518153e3cd3686821924f93987d210d2daf586996e935892cf19436b01333fbe038201816d9c26c8683b7135749750f7e63647cac84

Download Submit
memory/1484-17-0x00000000006D0000-0x00000000006D6000-memory.dmp

Filesize
24KB

Download
memory/2996-0-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/2996-1-0x0000000001FF0000-0x0000000001FF6000-memory.dmp

Filesize
24KB

Download
memory/2996-8-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download