249263186d9132ef1708aff564ec7d28ca17aad099555f12a8b427e2265381dd

Analysis

max time kernel
149s
max time network
153s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
29-03-2024 00:46

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General

Target

2024-03-29_c8392fd7f9747048b775e029fc651255_cryptolocker.exe
Size

45KB
MD5

c8392fd7f9747048b775e029fc651255
SHA1

e3181adab7fa58f9b7878b5545585948db6bad88
SHA256

249263186d9132ef1708aff564ec7d28ca17aad099555f12a8b427e2265381dd
SHA512

6bda3a5d28795ca60778fa53900fef5b65e53228bbab76943a76631bd4ad786b7068523fc792603b741002205f6f81d1ff9dd9b45499217cc877b97e128f2058
SSDEEP

768:79inqyNR/QtOOtEvwDpjBKccJVODvyLUVmV4:79mqyNhQMOtEvwDpjBzckp3

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/memory/2156-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000900000001225b-11.dat	CryptoLocker_rule2
behavioral1/memory/2156-15-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2904-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral1/memory/2156-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000900000001225b-11.dat	CryptoLocker_set1
behavioral1/memory/2156-15-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2904-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2904	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2156	2024-03-29_c8392fd7f9747048b775e029fc651255_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 2156 wrote to memory of 2904	2156	2024-03-29_c8392fd7f9747048b775e029fc651255_cryptolocker.exe	28
PID 2156 wrote to memory of 2904	2156	2024-03-29_c8392fd7f9747048b775e029fc651255_cryptolocker.exe	28
PID 2156 wrote to memory of 2904	2156	2024-03-29_c8392fd7f9747048b775e029fc651255_cryptolocker.exe	28
PID 2156 wrote to memory of 2904	2156	2024-03-29_c8392fd7f9747048b775e029fc651255_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-03-29_c8392fd7f9747048b775e029fc651255_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-29_c8392fd7f9747048b775e029fc651255_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2156
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2904

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
45KB

MD5
5cefdae41641d115c403eb210f319b3b

SHA1
38baf0806c2529ac1febe4478d2069e68d79e9c1

SHA256
7fc703e6cf76c7719db902a6e751ddff51d38800d211c44c0cb425a59321aa7c

SHA512
e5b04cac045f0a9aa78f771a7b7f2d08f46d3c75a24d494e967c39a80f0fe46032867d9caf3a2e460cc7ae1e76de3e0fa4a1e5079f653c084619ac70085f66a3

Download Submit
memory/2156-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2156-1-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/2156-2-0x00000000002B0000-0x00000000002B6000-memory.dmp

Filesize
24KB

Download
memory/2156-3-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/2156-15-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2156-16-0x00000000025C0000-0x00000000025CF000-memory.dmp

Filesize
60KB

Download
memory/2904-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2904-19-0x0000000000480000-0x0000000000486000-memory.dmp

Filesize
24KB

Download
memory/2904-22-0x0000000000250000-0x0000000000256000-memory.dmp

Filesize
24KB

Download