eccce834f921b8370dd5791cefb813d1e5e87f8ee21fa26ae6cb972a3b949ae3

Analysis

max time kernel
148s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
11-04-2024 08:47

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General

Target

2024-04-11_86b9a71e5d85c181dc0f460a23f77f8c_cryptolocker.exe
Size

43KB
MD5

86b9a71e5d85c181dc0f460a23f77f8c
SHA1

547e8fd1513c2c977b6e4d921c9f5cc935c65e31
SHA256

eccce834f921b8370dd5791cefb813d1e5e87f8ee21fa26ae6cb972a3b949ae3
SHA512

129971ecf0b25e33b51a0c5fa59e04b0068a824c6ee558c9fcbca98dca217e77ffeb484e54a78c8dbb861d036216cac105ec764b2cb5aed72e277cdee3230f54
SSDEEP

768:wHGGaSawqnwjRQ6ESlmFOsPoOdQtOOtEvwDpjm6j4AYsqSh+DETkedmhqhs:YGzl5wjRQBBOsP1QMOtEvwDpjl39+D++

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 3 IoCs

resource	yara_rule
behavioral2/memory/3332-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000e00000002313e-13.dat	CryptoLocker_rule2
behavioral2/memory/3332-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral2/memory/3332-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000e00000002313e-13.dat	CryptoLocker_set1
behavioral2/memory/3332-17-0x0000000000500000-0x000000000050B000-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-1-5-21-275798769-4264537674-1142822080-1000\Control Panel\International\Geo\Nation	2024-04-11_86b9a71e5d85c181dc0f460a23f77f8c_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2480	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 3332 wrote to memory of 2480	3332	2024-04-11_86b9a71e5d85c181dc0f460a23f77f8c_cryptolocker.exe	84
PID 3332 wrote to memory of 2480	3332	2024-04-11_86b9a71e5d85c181dc0f460a23f77f8c_cryptolocker.exe	84
PID 3332 wrote to memory of 2480	3332	2024-04-11_86b9a71e5d85c181dc0f460a23f77f8c_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-04-11_86b9a71e5d85c181dc0f460a23f77f8c_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-11_86b9a71e5d85c181dc0f460a23f77f8c_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3332
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2480

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
43KB

MD5
bd5cb84d49dcdc475f87face3c6de4e1

SHA1
18b20394aeae45c3f03cdca3992347b061a2d90a

SHA256
15295a542d24abb81a0f7b435097faf445973270fbfb84065b9edd01a8b252a9

SHA512
734f8ac782f84e182fcca4395136e50b1ea7c43987233878609019f5f3b499346acab5d989e39ef66134960fc14068ffe544a790253f437933561e65bfcae6f8

Download Submit
memory/2480-19-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/2480-21-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/3332-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/3332-1-0x0000000002310000-0x0000000002316000-memory.dmp

Filesize
24KB

Download
memory/3332-2-0x0000000002310000-0x0000000002316000-memory.dmp

Filesize
24KB

Download
memory/3332-3-0x0000000002230000-0x0000000002236000-memory.dmp

Filesize
24KB

Download
memory/3332-17-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download