d79fae76985b790dd78a94b164f26586ca065bc6d1d2720012b940d101d1801e

Analysis

max time kernel
148s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
31/05/2024, 22:51

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General

Target

2024-05-31_ae1dfcd2d38fda1bdc94bcedfee7e614_cryptolocker.exe
Size

58KB
MD5

ae1dfcd2d38fda1bdc94bcedfee7e614
SHA1

3a0a4c490db6ffdba5713a002d57e5927f0b47ff
SHA256

d79fae76985b790dd78a94b164f26586ca065bc6d1d2720012b940d101d1801e
SHA512

affb929482e93f8f9390380dfff77bae7327d6e59a0731ca573a86cd0580af302fe936e6afb0111e5553c563af5b434c1378bbceb881254119045ab49c69ef93
SSDEEP

1536:qmbhXDmjr5MOtEvwDpj5cDtKkQZQRKb6Impy7:BbdDmjr+OtEvwDpjMY

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/1360-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0008000000023426-13.dat	CryptoLocker_rule2
behavioral2/memory/1360-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2172-19-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2172-28-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/1360-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/1360-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/2172-19-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/2172-28-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral2/memory/1360-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/files/0x0008000000023426-13.dat	UPX
behavioral2/memory/1360-18-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/2172-19-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/2172-28-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

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-1-5-21-711569230-3659488422-571408806-1000\Control Panel\International\Geo\Nation	2024-05-31_ae1dfcd2d38fda1bdc94bcedfee7e614_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2172	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 1360 wrote to memory of 2172	1360	2024-05-31_ae1dfcd2d38fda1bdc94bcedfee7e614_cryptolocker.exe	84
PID 1360 wrote to memory of 2172	1360	2024-05-31_ae1dfcd2d38fda1bdc94bcedfee7e614_cryptolocker.exe	84
PID 1360 wrote to memory of 2172	1360	2024-05-31_ae1dfcd2d38fda1bdc94bcedfee7e614_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-05-31_ae1dfcd2d38fda1bdc94bcedfee7e614_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-31_ae1dfcd2d38fda1bdc94bcedfee7e614_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1360
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2172

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
58KB

MD5
fbd4009014aff8b18e0c4c4aca4440dc

SHA1
c513c1154514a1855704057ac10c5cc861c36e68

SHA256
a4144c9352cf00603ee4306d4e1f0d49f4a45a8c18ff7df2ffe0cde22e5f111f

SHA512
3cb240a7e844593f121f59a80a60dca7a65f8c1b7555814a0d6df45996258813f7e45f77d1e49d08e5d7e23500acebe37c10775aacf675162925092fc00e43d5

Download Submit
memory/1360-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1360-1-0x0000000000740000-0x0000000000746000-memory.dmp

Filesize
24KB

Download
memory/1360-2-0x0000000000760000-0x0000000000766000-memory.dmp

Filesize
24KB

Download
memory/1360-8-0x0000000000740000-0x0000000000746000-memory.dmp

Filesize
24KB

Download
memory/1360-18-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2172-19-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2172-21-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/2172-27-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/2172-28-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download