69f39fa78a0a59c7cc5a89e4821f39f309b62d996e3b4cc1eeb22bc7b38e04eb

Analysis

max time kernel
148s
max time network
149s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
12/02/2024, 04:43

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General

Target

2024-02-12_1041501064f18ba12c979c1ab6524d43_cryptolocker.exe
Size

45KB
MD5

1041501064f18ba12c979c1ab6524d43
SHA1

74b7f5a09fd1765fb459f3b82b937409a7b8d062
SHA256

69f39fa78a0a59c7cc5a89e4821f39f309b62d996e3b4cc1eeb22bc7b38e04eb
SHA512

583a4cf7dac2986c23fbeefc85a56c1b687519f8a6e8c3da6975da280695d4562249869b889689f0339ab9249330cc5af3fccfc0836bd502857e37e9a72a9625
SSDEEP

768:wHGGaSawqnwjRQ6ESlmFOsPoOdQtOOtEvwDpjm6j4AYsqSh+DETkedmhXSS4L:YGzl5wjRQBBOsP1QMOtEvwDpjl39+D+F

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/memory/2812-16-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x00070000000122c9-24.dat	CryptoLocker_rule2
behavioral1/memory/2916-13-0x0000000000580000-0x000000000058B000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2916-1-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral1/memory/2812-16-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x00070000000122c9-24.dat	CryptoLocker_set1
behavioral1/memory/2916-13-0x0000000000580000-0x000000000058B000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2916-1-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2812	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2916	2024-02-12_1041501064f18ba12c979c1ab6524d43_cryptolocker.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2916 wrote to memory of 2812	2916	2024-02-12_1041501064f18ba12c979c1ab6524d43_cryptolocker.exe	15
PID 2916 wrote to memory of 2812	2916	2024-02-12_1041501064f18ba12c979c1ab6524d43_cryptolocker.exe	15
PID 2916 wrote to memory of 2812	2916	2024-02-12_1041501064f18ba12c979c1ab6524d43_cryptolocker.exe	15
PID 2916 wrote to memory of 2812	2916	2024-02-12_1041501064f18ba12c979c1ab6524d43_cryptolocker.exe	15

C:\Users\Admin\AppData\Local\Temp\asih.exe
"C:\Users\Admin\AppData\Local\Temp\asih.exe"
1⤵
- Executes dropped EXE
PID:2812

C:\Users\Admin\AppData\Local\Temp\2024-02-12_1041501064f18ba12c979c1ab6524d43_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-12_1041501064f18ba12c979c1ab6524d43_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2916

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

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
45KB

MD5
08ee2b43f8407506b219b7133d8a24ad

SHA1
3700214839554eb7257e74cc3e0859fd64f2de82

SHA256
87b53cf15a1be3055de499e33f9c158784356cf6ec3e7bd83db9344bc8de9801

SHA512
f89b87f6325b36fcca89fad9893a8b9ee33ac4f79063c1e234e21c56819ba7a965e560f8e9a3a8a40245fcae5e906616ea2c5f83e37dfcf937d1836c3f666d35

Download Submit
memory/2812-16-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2812-25-0x0000000000320000-0x0000000000326000-memory.dmp

Filesize
24KB

Download
memory/2812-18-0x0000000000460000-0x0000000000466000-memory.dmp

Filesize
24KB

Download
memory/2916-2-0x0000000000380000-0x0000000000386000-memory.dmp

Filesize
24KB

Download
memory/2916-4-0x0000000000340000-0x0000000000346000-memory.dmp

Filesize
24KB

Download
memory/2916-13-0x0000000000580000-0x000000000058B000-memory.dmp

Filesize
44KB

Download
memory/2916-1-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2916-0-0x0000000000340000-0x0000000000346000-memory.dmp

Filesize
24KB

Download