5cdce65894db27730ccb18153230a0c0a650d7d8d894d3596bfb8e89a591753e

Analysis

max time kernel
150s
max time network
158s
platform
windows10-2004_x64
resource
win10v2004-20240221-en
resource tags

arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
submitted
24/02/2024, 03:50

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General

Target

2024-02-24_c70e895af61d7949c473e98c873c5467_cryptolocker.exe
Size

69KB
MD5

c70e895af61d7949c473e98c873c5467
SHA1

226156d1ef585525ef3fa78c40dc616a4c0534fd
SHA256

5cdce65894db27730ccb18153230a0c0a650d7d8d894d3596bfb8e89a591753e
SHA512

f92d209ec1ff53709cc673a08ee5f3589342636ee696a36fccae9fc614105a9b082692e3f56d68b2c5e4d42bf6cf523c455d47cc79f2533114ed8da6b4035427
SSDEEP

1536:Dk/xY0sllyGQMOtEvwDpjwycDtKkQZQRKb61vSbgZ3QzNKUf:DW60sllyWOtEvwDpjwF85R

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 3 IoCs

resource	yara_rule
behavioral2/memory/1840-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000600000002321a-13.dat	CryptoLocker_rule2
behavioral2/memory/1840-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral2/memory/1840-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000600000002321a-13.dat	CryptoLocker_set1
behavioral2/memory/1840-17-0x0000000000500000-0x000000000050B000-memory.dmp	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-1-5-21-1414748551-1520717498-2956787782-1000\Control Panel\International\Geo\Nation	2024-02-24_c70e895af61d7949c473e98c873c5467_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4756	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 1840 wrote to memory of 4756	1840	2024-02-24_c70e895af61d7949c473e98c873c5467_cryptolocker.exe	90
PID 1840 wrote to memory of 4756	1840	2024-02-24_c70e895af61d7949c473e98c873c5467_cryptolocker.exe	90
PID 1840 wrote to memory of 4756	1840	2024-02-24_c70e895af61d7949c473e98c873c5467_cryptolocker.exe	90

C:\Users\Admin\AppData\Local\Temp\2024-02-24_c70e895af61d7949c473e98c873c5467_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-24_c70e895af61d7949c473e98c873c5467_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1840
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4756

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
69KB

MD5
b9465767a2564143a0ec674fd35f3088

SHA1
8eb30c9dcc186ec88ef2201fc2fdbbb9939db630

SHA256
f4e988ea0597564f9561cabf05faf18a69455ecbe9a5579070d07d790a8d763a

SHA512
a752ce77d75fcfe1437eeb805ddb4aa6e6e7ec0861e157808fce602552a1aa3abedc7f139f5a50b64cc03cb91cbf2bc45c70e93d609cac1133642adc9379d632

Download Submit
memory/1840-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/1840-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/1840-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/1840-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/1840-17-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/4756-20-0x0000000001FD0000-0x0000000001FD6000-memory.dmp

Filesize
24KB

Download
memory/4756-19-0x0000000001FF0000-0x0000000001FF6000-memory.dmp

Filesize
24KB

Download