95c4aebc4969c146663ce31314f08026e1a0aa34b9b20d96b77e346408640cff

Analysis

max time kernel
149s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
17/04/2024, 05:31

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General

Target

2024-04-17_20781810b801d868248bbe674409c936_cryptolocker.exe
Size

41KB
MD5

20781810b801d868248bbe674409c936
SHA1

91864ac90c115483971b3aa1a26a988fc87e14b6
SHA256

95c4aebc4969c146663ce31314f08026e1a0aa34b9b20d96b77e346408640cff
SHA512

944ba70d2608257e98743ce0ea04ef635535aef8629f8fb2a095d0c71183f1e297fd18eb32941a602a61643944433b00e14ab18de83ec1548f6be84512c80fc7
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBVaD3TP7DFHuRcx:X6QFElP6n+gJQMOtEvwDpjBmzDkWx

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000d000000021dd1-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000d000000021dd1-12.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-1-5-21-3198953144-1466794930-246379610-1000\Control Panel\International\Geo\Nation	2024-04-17_20781810b801d868248bbe674409c936_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4568	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 1900 wrote to memory of 4568	1900	2024-04-17_20781810b801d868248bbe674409c936_cryptolocker.exe	86
PID 1900 wrote to memory of 4568	1900	2024-04-17_20781810b801d868248bbe674409c936_cryptolocker.exe	86
PID 1900 wrote to memory of 4568	1900	2024-04-17_20781810b801d868248bbe674409c936_cryptolocker.exe	86

C:\Users\Admin\AppData\Local\Temp\2024-04-17_20781810b801d868248bbe674409c936_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-17_20781810b801d868248bbe674409c936_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1900
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4568

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
41KB

MD5
b4ab9bbbd7a50136220a47c71d01415b

SHA1
274b397dbaae1917b43a87426088e79eeafe6096

SHA256
d8d0b43a21309355e945a24b57e4c54e8714b726d1f39df8c0f1381347532dc5

SHA512
827a2484bb11948270e035cc423d07f4e1c39621ca2a8bb2b3dec6cfbcca46d8fe987d207115348172590b458d404ce84a0ce228cba5786e297ffcb1ca9fed5a

Download Submit
memory/1900-0-0x00000000004C0000-0x00000000004C6000-memory.dmp

Filesize
24KB

Download
memory/1900-1-0x00000000004C0000-0x00000000004C6000-memory.dmp

Filesize
24KB

Download
memory/1900-2-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/4568-19-0x0000000000560000-0x0000000000566000-memory.dmp

Filesize
24KB

Download
memory/4568-17-0x0000000000680000-0x0000000000686000-memory.dmp

Filesize
24KB

Download