332382ddfa560302e5f7679f3184207275c72da6b2687ece4895839dd2e453a1

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
18/02/2024, 12:42

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General

Target

2024-02-18_bb90ed0ec4c5175f7f9964dc821c9ea9_cryptolocker.exe
Size

51KB
MD5

bb90ed0ec4c5175f7f9964dc821c9ea9
SHA1

12ad863191b2865319e738801e4b7b94a0e32276
SHA256

332382ddfa560302e5f7679f3184207275c72da6b2687ece4895839dd2e453a1
SHA512

014bfc39ee832e09aed590439876d4b8455758d2db95458e0da7c40ad658f0c1ac26930409f7e07ed11aea3ca46da24c8e817e881bbd5c99c41de01d1e3f043e
SSDEEP

768:79inqyNR/QtOOtEvwDpjBK/rJ+Nw8qn8pKIRszjg:79mqyNhQMOtEvwDpjBxe8TpXRSM

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/3432-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0008000000023207-13.dat	CryptoLocker_rule2
behavioral2/memory/5084-18-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3432-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/3432-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x0008000000023207-13.dat	CryptoLocker_set1
behavioral2/memory/5084-18-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/3432-17-0x0000000000500000-0x000000000050F000-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-1-5-21-1168293393-3419776239-306423207-1000\Control Panel\International\Geo\Nation	2024-02-18_bb90ed0ec4c5175f7f9964dc821c9ea9_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
5084	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 3432 wrote to memory of 5084	3432	2024-02-18_bb90ed0ec4c5175f7f9964dc821c9ea9_cryptolocker.exe	83
PID 3432 wrote to memory of 5084	3432	2024-02-18_bb90ed0ec4c5175f7f9964dc821c9ea9_cryptolocker.exe	83
PID 3432 wrote to memory of 5084	3432	2024-02-18_bb90ed0ec4c5175f7f9964dc821c9ea9_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-02-18_bb90ed0ec4c5175f7f9964dc821c9ea9_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-18_bb90ed0ec4c5175f7f9964dc821c9ea9_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3432
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:5084

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
52KB

MD5
38cb67899898d1a640eb26d68ba18524

SHA1
315eecd45027c85fb08bddb9c094b8be762daf89

SHA256
67bc8efd515a300c60d21148f90b3faf883a6e8786142303c765f1298637f3f3

SHA512
d9e49a8b22597dfc6da0aecacce47bf61148612035c948aab7d3d17d0a9af66137211dd173daf34e70dd00f71a338afc4935c5fa4b12b7d4727083a951f221a8

Download Submit
memory/3432-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3432-1-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/3432-2-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/3432-3-0x00000000006D0000-0x00000000006D6000-memory.dmp

Filesize
24KB

Download
memory/3432-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/5084-18-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/5084-20-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/5084-23-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download