aedfd418fdbc3440a3e56088dd504afa56ec812b55ac2f56b8fee66c485a9116

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
03/06/2024, 02:36

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General

Target

2024-06-03_b9608b645983cb54ecae9033ce7819c6_cryptolocker.exe
Size

46KB
MD5

b9608b645983cb54ecae9033ce7819c6
SHA1

43030da85ee47a85dff010008aa46e3c359cf1f6
SHA256

aedfd418fdbc3440a3e56088dd504afa56ec812b55ac2f56b8fee66c485a9116
SHA512

e62d5b87e01814e59898981699a20ea444e39c24ea6753e71bb6d94fbde5103839bbbd7a58fb2dd07374daa100713f8d7baf56f7d76f99ebd19988548474a27b
SSDEEP

768:P6LsoEEeegiZPvEhHS5+Mh/QtOOtEvwDpjBpaD3TUogs/VXpAP6:P6QFElP6k+MRQMOtEvwDpjBQpVX/

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/1396-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000b0000000232f0-13.dat	CryptoLocker_rule2
behavioral2/memory/1396-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1988-26-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/1396-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000b0000000232f0-13.dat	CryptoLocker_set1
behavioral2/memory/1396-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/memory/1988-26-0x0000000000500000-0x000000000050B000-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-1-5-21-540404634-651139247-2967210625-1000\Control Panel\International\Geo\Nation	2024-06-03_b9608b645983cb54ecae9033ce7819c6_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1988	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 1396 wrote to memory of 1988	1396	2024-06-03_b9608b645983cb54ecae9033ce7819c6_cryptolocker.exe	81
PID 1396 wrote to memory of 1988	1396	2024-06-03_b9608b645983cb54ecae9033ce7819c6_cryptolocker.exe	81
PID 1396 wrote to memory of 1988	1396	2024-06-03_b9608b645983cb54ecae9033ce7819c6_cryptolocker.exe	81

C:\Users\Admin\AppData\Local\Temp\2024-06-03_b9608b645983cb54ecae9033ce7819c6_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-03_b9608b645983cb54ecae9033ce7819c6_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1396
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1988

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
d33b57c77d7923c43a0839fdc4572c44

SHA1
5d51d3c8ef80c2037a1a149b02804ac7bf9c948f

SHA256
2ef1322cec73488c071a2572480c5db1388b47e690e958e93756de8d12314f52

SHA512
65842bcd1040c3f884923b13a117c3de9a8941361b567ac7d8ba0344fea3e06b451c39868d19d18a25630cdd89979fd2143f47282663ed95f86f4c0f8c3020a4

Download Submit
memory/1396-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/1396-1-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/1396-2-0x0000000002070000-0x0000000002076000-memory.dmp

Filesize
24KB

Download
memory/1396-9-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/1396-17-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/1988-19-0x0000000002110000-0x0000000002116000-memory.dmp

Filesize
24KB

Download
memory/1988-25-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/1988-26-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download