5774eaa509a108d2c0fb8eb177a7689e3e5e642c9619d9cbced375b1e8b327fd

Analysis

max time kernel
148s
max time network
157s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
17-05-2024 09:23

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General

Target

2024-05-17_0c21416e5489825099742e6ca3a8cd9a_cryptolocker.exe
Size

37KB
MD5

0c21416e5489825099742e6ca3a8cd9a
SHA1

50078a2e7bba94228f846107ddc8fe59a80b468c
SHA256

5774eaa509a108d2c0fb8eb177a7689e3e5e642c9619d9cbced375b1e8b327fd
SHA512

88004f167060fdab26f6ac87da81cc5758139e0ca214f65f5c162a6c6b39f5111ff23dc97546ee31d346c13ada04bba5f17e2b5dfcc7abd5b35282aad2b68636
SSDEEP

768:wHGGaSawqnwjRQ6ESlmFOsPoOdQtOOtEvwDpjm6WaJIOc+UPPEkLb:YGzl5wjRQBBOsP1QMOtEvwDpjgarrkLb

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 3 IoCs

resource	yara_rule
behavioral2/memory/4116-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000700000002328e-13.dat	CryptoLocker_rule2
behavioral2/memory/4116-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral2/memory/4116-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000700000002328e-13.dat	CryptoLocker_set1
behavioral2/memory/4116-17-0x0000000000500000-0x000000000050B000-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-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation	2024-05-17_0c21416e5489825099742e6ca3a8cd9a_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3780	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 4116 wrote to memory of 3780	4116	2024-05-17_0c21416e5489825099742e6ca3a8cd9a_cryptolocker.exe	82
PID 4116 wrote to memory of 3780	4116	2024-05-17_0c21416e5489825099742e6ca3a8cd9a_cryptolocker.exe	82
PID 4116 wrote to memory of 3780	4116	2024-05-17_0c21416e5489825099742e6ca3a8cd9a_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-05-17_0c21416e5489825099742e6ca3a8cd9a_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-17_0c21416e5489825099742e6ca3a8cd9a_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4116
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3780

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
37KB

MD5
98700319a5192d5c0939fbb56dbcd0f4

SHA1
974790266e68b01a5b1d7bdde02b6ab6e828a05c

SHA256
b5a0ad1ce863362d219559f474a597167c131c340f20058447c651473ed326d4

SHA512
d08c748f7448978bb4c64247bd74c67772b880e73fd48b10395773d1118ab42f46f363669171c21680acbe3147e7918e56cfb1d3c5d7a9ad024ed908a3228285

Download Submit
memory/3780-19-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/3780-25-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4116-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/4116-1-0x0000000001F50000-0x0000000001F56000-memory.dmp

Filesize
24KB

Download
memory/4116-2-0x0000000001F70000-0x0000000001F76000-memory.dmp

Filesize
24KB

Download
memory/4116-9-0x0000000001F50000-0x0000000001F56000-memory.dmp

Filesize
24KB

Download
memory/4116-17-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download