7919884767be58da6c4a2ada15688dac83371f61a7d52663384756cc2c750b3f

Analysis

max time kernel
38s
max time network
147s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
09-06-2024 09:27

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General

Target

2024-06-09_249bf87691896f9eebc54d76ec6f7bd7_cryptolocker.exe
Size

34KB
MD5

249bf87691896f9eebc54d76ec6f7bd7
SHA1

fba85151536c76b183e82f22fbe1592c2e775c68
SHA256

7919884767be58da6c4a2ada15688dac83371f61a7d52663384756cc2c750b3f
SHA512

71ab68378d13e63fa7ca5b66e0b62f02ab1ec839930b002ab753beff5a3ce82328e71d3868baa665a51dfde240238037f606f87e6e13f21918e0ffd56ac44b37
SSDEEP

384:bM7Q0pjC4GybxMv01d3AcASBQMf6i/zzzcYgUPSznStEkcsgqDxcR:b/yC4GyNM01GuQMNXw2PSjSKkcJecR

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0009000000023467-12.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-1-5-21-3571316656-3665257725-2415531812-1000\Control Panel\International\Geo\Nation	2024-06-09_249bf87691896f9eebc54d76ec6f7bd7_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4212	retln.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 3504 wrote to memory of 4212	3504	2024-06-09_249bf87691896f9eebc54d76ec6f7bd7_cryptolocker.exe	82
PID 3504 wrote to memory of 4212	3504	2024-06-09_249bf87691896f9eebc54d76ec6f7bd7_cryptolocker.exe	82
PID 3504 wrote to memory of 4212	3504	2024-06-09_249bf87691896f9eebc54d76ec6f7bd7_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-06-09_249bf87691896f9eebc54d76ec6f7bd7_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-09_249bf87691896f9eebc54d76ec6f7bd7_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3504
- C:\Users\Admin\AppData\Local\Temp\retln.exe
  "C:\Users\Admin\AppData\Local\Temp\retln.exe"
  2⤵
  - Executes dropped EXE
  PID:4212

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\retln.exe

Filesize
35KB

MD5
d95722a83af5f8c3828e047da961a594

SHA1
e1b5c421d554c88018f0f521403e0c3e9724befa

SHA256
2eeccfc4c9120df26dec80e2bcef90541f088e0b63c7580298d9b9f4e716fc1a

SHA512
282f8590467c67e9747cde1d6bf5de691dbde3bb58fbc1e4d6f946ce53436ead7d86f36a576a535ae7294bbf5564eb8775871448508ce1790db909221592c432

Download Submit
memory/3504-0-0x0000000002120000-0x0000000002126000-memory.dmp

Filesize
24KB

Download
memory/3504-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/3504-8-0x0000000002120000-0x0000000002126000-memory.dmp

Filesize
24KB

Download
memory/4212-25-0x0000000002210000-0x0000000002216000-memory.dmp

Filesize
24KB

Download