ae432461c5f0ec0dd6c0b6ea377db17e8b76cde2f3562821141581254a2e1095

Analysis

max time kernel
148s
max time network
152s
platform
windows7_x64
resource
win7-20240220-en
resource tags

arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
submitted
12-05-2024 04:49

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General

Target

2024-05-12_ef612b0b815b1ca4ec7e5bb913ad5628_cryptolocker.exe
Size

41KB
MD5

ef612b0b815b1ca4ec7e5bb913ad5628
SHA1

9b2a13f3302a32dad7a2591f60eb36381740c742
SHA256

ae432461c5f0ec0dd6c0b6ea377db17e8b76cde2f3562821141581254a2e1095
SHA512

0cb9a37e544060080c6790c9d603c65a749bfc3aa786e3ad29c9180afe0d32065f656732220a7954df46bab7ae0dc2f29f84e4187791bf2e54ccfb582dfaac8d
SSDEEP

768:wHGGaSawqnwjRQ6ESlmFOsPoOdQtOOtEvwDpjm6WaJIOc+UPPEkL7vFG:YGzl5wjRQBBOsP1QMOtEvwDpjgarrkLE

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/memory/2244-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000d00000001342e-11.dat	CryptoLocker_rule2
behavioral1/memory/2244-13-0x0000000000450000-0x000000000045B000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2244-16-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral1/memory/2244-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000d00000001342e-11.dat	CryptoLocker_set1
behavioral1/memory/2244-13-0x0000000000450000-0x000000000045B000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2244-16-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
3004	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2244	2024-05-12_ef612b0b815b1ca4ec7e5bb913ad5628_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 2244 wrote to memory of 3004	2244	2024-05-12_ef612b0b815b1ca4ec7e5bb913ad5628_cryptolocker.exe	28
PID 2244 wrote to memory of 3004	2244	2024-05-12_ef612b0b815b1ca4ec7e5bb913ad5628_cryptolocker.exe	28
PID 2244 wrote to memory of 3004	2244	2024-05-12_ef612b0b815b1ca4ec7e5bb913ad5628_cryptolocker.exe	28
PID 2244 wrote to memory of 3004	2244	2024-05-12_ef612b0b815b1ca4ec7e5bb913ad5628_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-12_ef612b0b815b1ca4ec7e5bb913ad5628_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-12_ef612b0b815b1ca4ec7e5bb913ad5628_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2244
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3004

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

\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
42KB

MD5
d400b815dfa01733e6662963f89b49a5

SHA1
b0de8ca4ac8d1199cd8c37ef249192890181019e

SHA256
195ae7a8ff96bf5b802639a3855db68adb8b08738f1336fd75093b1f23858719

SHA512
51313bae21e66d48bb1e8f6f2cdaa463150b9e3e56b9d5a686d2b368ba2c3db2721abdba969e94a68ba4c31cab413b25ad00335bb85c941d339e6ddb5006b55f

Download Submit
memory/2244-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2244-1-0x00000000002B0000-0x00000000002B6000-memory.dmp

Filesize
24KB

Download
memory/2244-2-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download
memory/2244-9-0x00000000002B0000-0x00000000002B6000-memory.dmp

Filesize
24KB

Download
memory/2244-13-0x0000000000450000-0x000000000045B000-memory.dmp

Filesize
44KB

Download
memory/2244-16-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/3004-18-0x0000000000480000-0x0000000000486000-memory.dmp

Filesize
24KB

Download
memory/3004-25-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download