f194ca742529b62d5b763cd1b3a9dd2df2a80e545328e8d3ad50df02e6c88fba

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
16/04/2024, 23:24

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General

Target

2024-04-16_54866f2df921dd01f2ad8f0c4e9243b4_cryptolocker.exe
Size

389KB
MD5

54866f2df921dd01f2ad8f0c4e9243b4
SHA1

59774710e8e2dac76bc9b6e6d82cd06ae0164ddf
SHA256

f194ca742529b62d5b763cd1b3a9dd2df2a80e545328e8d3ad50df02e6c88fba
SHA512

159e640bdd09eb4f1f529d33023aa53e9388a3413ff2085e899378247d5719e494bb07c634929a6e8f0beee3af2afe3bbb6d25b053b272de831d91af98024f05
SSDEEP

6144:nnOsaQgAOjvrZFODJjBz3j1jTqQy6v2GGnugOtihzX0:nnOflT/ZFIjBz3xjTxynGUOUhX0

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000c0000000233b6-12.dat	CryptoLocker_rule2

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-1-5-21-4084619521-2220719027-1909462854-1000\Control Panel\International\Geo\Nation	2024-04-16_54866f2df921dd01f2ad8f0c4e9243b4_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3416	hasfj.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 1464 wrote to memory of 3416	1464	2024-04-16_54866f2df921dd01f2ad8f0c4e9243b4_cryptolocker.exe	83
PID 1464 wrote to memory of 3416	1464	2024-04-16_54866f2df921dd01f2ad8f0c4e9243b4_cryptolocker.exe	83
PID 1464 wrote to memory of 3416	1464	2024-04-16_54866f2df921dd01f2ad8f0c4e9243b4_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-04-16_54866f2df921dd01f2ad8f0c4e9243b4_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-16_54866f2df921dd01f2ad8f0c4e9243b4_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1464
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:3416

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\hasfj.exe

Filesize
389KB

MD5
34fb997c7e5892f4781bd311e31ba277

SHA1
efbce1655709fd775b9922bd34c5b91087af09fb

SHA256
568eb3bfad8af24bb4418d383da606d501d10c5a356aceb552d9b080c6131f74

SHA512
b73f8e16e6effea72dad3a7bbe5c3f6f86f1db547fe59996affb44562b414eb1f1811c75d80d02540dde034020add0737c2d52e68724b97dd55a182c622e2ec7

Download Submit
memory/1464-0-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/1464-1-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/1464-2-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download
memory/3416-17-0x0000000003010000-0x0000000003016000-memory.dmp

Filesize
24KB

Download
memory/3416-19-0x00000000020A0000-0x00000000020A6000-memory.dmp

Filesize
24KB

Download