a778774b0db2505569ebf03f846ce2e64e0cd438c8dbd8548edd73297ccb9fa9

Analysis

max time kernel
150s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20240221-en
resource tags

arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
submitted
25/02/2024, 08:28

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General

Target

2024-02-25_5bb55300c276f917aaf07a440f71d20b_cryptolocker.exe
Size

67KB
MD5

5bb55300c276f917aaf07a440f71d20b
SHA1

62bd4d25e809615919268d4123c9afce510f152d
SHA256

a778774b0db2505569ebf03f846ce2e64e0cd438c8dbd8548edd73297ccb9fa9
SHA512

aa33abddc3cac66f3ca1637ba517dc55137c32c24a11d72e02c81c6c770634b9424ae75895f76b4c416dfa5d1f55311a42836ba297afdb4282ad4b1b5bf20e75
SSDEEP

1536:Dk/xY0sllyGQMOtEvwDpjwycDtKkQZQRKb61vSbgZ3QzNKUx:DW60sllyWOtEvwDpjwF85v

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/1592-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x00070000000231eb-13.dat	CryptoLocker_rule2
behavioral2/memory/4196-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1592-19-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/1592-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x00070000000231eb-13.dat	CryptoLocker_set1
behavioral2/memory/4196-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/memory/1592-19-0x0000000000500000-0x000000000050B000-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-1-5-21-3054445511-921769590-4013668107-1000\Control Panel\International\Geo\Nation	2024-02-25_5bb55300c276f917aaf07a440f71d20b_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4196	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 1592 wrote to memory of 4196	1592	2024-02-25_5bb55300c276f917aaf07a440f71d20b_cryptolocker.exe	88
PID 1592 wrote to memory of 4196	1592	2024-02-25_5bb55300c276f917aaf07a440f71d20b_cryptolocker.exe	88
PID 1592 wrote to memory of 4196	1592	2024-02-25_5bb55300c276f917aaf07a440f71d20b_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-02-25_5bb55300c276f917aaf07a440f71d20b_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-25_5bb55300c276f917aaf07a440f71d20b_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1592
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4196

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
67KB

MD5
ce6813f6dd49fffdc3717bbe8150f9d9

SHA1
ee33a93455fc13e170b945ccf265fb866e1c85e3

SHA256
86689d22d6a91c062e7063035e04b9129377b16150dc20bb55b3d92beb10869c

SHA512
72510d152a73d60445b86e1c269463b6518b4b6e3ec707ea0f47c408a0fb1716fd3eb1776625706c658a281dd3b7c37b7f274ea540eb4048905f822e859e8584

Download Submit
memory/1592-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/1592-1-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/1592-2-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/1592-3-0x00000000020F0000-0x00000000020F6000-memory.dmp

Filesize
24KB

Download
memory/1592-19-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/4196-17-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/4196-20-0x00000000004C0000-0x00000000004C6000-memory.dmp

Filesize
24KB

Download
memory/4196-23-0x0000000000490000-0x0000000000496000-memory.dmp

Filesize
24KB

Download