acf98fe6a7e91bdecbb3e7cab22b6be9aa9ff55779e156e6bde7faece1d1bd75

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
11/06/2024, 19:30

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General

Target

2024-06-11_54ad142bc62175e9b26e879f0be7f33f_cryptolocker.exe
Size

54KB
MD5

54ad142bc62175e9b26e879f0be7f33f
SHA1

8cbca27b0780d8e77b705f36a9963f5998809e16
SHA256

acf98fe6a7e91bdecbb3e7cab22b6be9aa9ff55779e156e6bde7faece1d1bd75
SHA512

c4fb48e7de69e9e07a62260ce923abc52ee8d4f20417568e2436e06ac2ccad3fda74b97283a74551ce07ec807f79ece20f210b151a5e72955557c2a43e9e5f83
SSDEEP

768:79inqyNR/QtOOtEvwDpjBK/rJ+Nw8qn8pKIRszDr6KAH:79mqyNhQMOtEvwDpjBxe8TpXRSDeKQ

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 3 IoCs

resource	yara_rule
behavioral2/memory/4604-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0009000000023419-13.dat	CryptoLocker_rule2
behavioral2/memory/4604-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral2/memory/4604-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x0009000000023419-13.dat	CryptoLocker_set1
behavioral2/memory/4604-17-0x0000000000500000-0x000000000050F000-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-1-5-21-2804150937-2146708401-419095071-1000\Control Panel\International\Geo\Nation	2024-06-11_54ad142bc62175e9b26e879f0be7f33f_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3776	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 4604 wrote to memory of 3776	4604	2024-06-11_54ad142bc62175e9b26e879f0be7f33f_cryptolocker.exe	81
PID 4604 wrote to memory of 3776	4604	2024-06-11_54ad142bc62175e9b26e879f0be7f33f_cryptolocker.exe	81
PID 4604 wrote to memory of 3776	4604	2024-06-11_54ad142bc62175e9b26e879f0be7f33f_cryptolocker.exe	81

C:\Users\Admin\AppData\Local\Temp\2024-06-11_54ad142bc62175e9b26e879f0be7f33f_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-11_54ad142bc62175e9b26e879f0be7f33f_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4604
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3776

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
54KB

MD5
2ee678ddbc9237b317e92c6c23e036d4

SHA1
1dcb6629ab243809dcb59173a3ac2c9c2f846835

SHA256
5b055d085917dce1ed8eebcc347d42f6656111224b0ff294d397593406c8da7a

SHA512
3b4d770be0526d311a87cc0d1dedbe153e0c4f6d93a13cfccc0fe0ca55779c25d6255d2fd014391572bbfe0b41b8243eef4618031d628d9c8314aaf554c7fc44

Download Submit
memory/3776-19-0x0000000002100000-0x0000000002106000-memory.dmp

Filesize
24KB

Download
memory/3776-25-0x0000000001FD0000-0x0000000001FD6000-memory.dmp

Filesize
24KB

Download
memory/4604-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/4604-1-0x0000000000840000-0x0000000000846000-memory.dmp

Filesize
24KB

Download
memory/4604-2-0x0000000000860000-0x0000000000866000-memory.dmp

Filesize
24KB

Download
memory/4604-9-0x0000000000840000-0x0000000000846000-memory.dmp

Filesize
24KB

Download
memory/4604-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download