c7c1e538086cebef7ce52876c309dba88f4ac0f1a3bf021e4a80b8e78ab1ba14

Analysis

max time kernel
150s
max time network
147s
platform
windows10-2004_x64
resource
win10v2004-20240221-en
resource tags

arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
submitted
21/02/2024, 22:24

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General

Target

2024-02-21_079a03b39194f2cce3c2ce55aa9c9e4c_cryptolocker.exe
Size

385KB
MD5

079a03b39194f2cce3c2ce55aa9c9e4c
SHA1

6ad39432fdaae3b044456e9d477d9e778a850af1
SHA256

c7c1e538086cebef7ce52876c309dba88f4ac0f1a3bf021e4a80b8e78ab1ba14
SHA512

313064fffb8aca123855851ea16c2eb92e5bab3ec48f23af57e74faab0aaced7173470c42fa6531f578caeb3ff8cdc213c7b7843490fdbcf5c86be8e924717b3
SSDEEP

6144:nnOsaQgAOjvrZFODJjBz3j1jTqQy6v2GGnugOtihzXe:nnOflT/ZFIjBz3xjTxynGUOUhXe

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000b000000023210-12.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-1-5-21-1712835645-2080934712-2142796781-1000\Control Panel\International\Geo\Nation	2024-02-21_079a03b39194f2cce3c2ce55aa9c9e4c_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3992	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 4924 wrote to memory of 3992	4924	2024-02-21_079a03b39194f2cce3c2ce55aa9c9e4c_cryptolocker.exe	88
PID 4924 wrote to memory of 3992	4924	2024-02-21_079a03b39194f2cce3c2ce55aa9c9e4c_cryptolocker.exe	88
PID 4924 wrote to memory of 3992	4924	2024-02-21_079a03b39194f2cce3c2ce55aa9c9e4c_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-02-21_079a03b39194f2cce3c2ce55aa9c9e4c_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-21_079a03b39194f2cce3c2ce55aa9c9e4c_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4924
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:3992

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
385KB

MD5
4d6ea70d8614701e945659c828bc70d6

SHA1
128f11860628e432b74a23338efd67e72e6d0eea

SHA256
728e9277a99e497bcbca23607f8e75ed3f3485317bccb71cabdfdd34197ddb73

SHA512
566125c6cc26a767025af8d5769c9959c4125ee4cb86da68246452353d0c047206d6cbc36ab3f028fe0ad19851003bcda28a4c855dd4f5a3ba84d801fd55cdda

Download Submit
memory/3992-17-0x0000000003000000-0x0000000003006000-memory.dmp

Filesize
24KB

Download
memory/3992-19-0x0000000002110000-0x0000000002116000-memory.dmp

Filesize
24KB

Download
memory/4924-0-0x0000000002180000-0x0000000002186000-memory.dmp

Filesize
24KB

Download
memory/4924-1-0x0000000002180000-0x0000000002186000-memory.dmp

Filesize
24KB

Download
memory/4924-2-0x00000000021B0000-0x00000000021B6000-memory.dmp

Filesize
24KB

Download