40d994e65f612f9793db1968b2026fb9d5086747ea168c86d854827f9aff951a

Analysis

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

arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
submitted
26/03/2024, 06:24

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General

Target

2024-03-26_027350ab91d33e33c066b16b2acccf7b_cryptolocker.exe
Size

97KB
MD5

027350ab91d33e33c066b16b2acccf7b
SHA1

0b299e7662674129ed4e57e6d2b074a2244fae0a
SHA256

40d994e65f612f9793db1968b2026fb9d5086747ea168c86d854827f9aff951a
SHA512

8126c88a9ba54506e5e6cb986611e6623211c3b7641d64252bf942ca067ed5bf223d861c95cf2bb22bf48fcdfa3c465bd25920728a3e244c8e2322f45ee6a6bb
SSDEEP

1536:V6QFElP6n+gMQMOtEvwDpjQGYQbN/PKwNgp0QVOV:V6a+pOtEvwDpjtzp

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x0009000000012251-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x0009000000012251-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2504	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2728	2024-03-26_027350ab91d33e33c066b16b2acccf7b_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 2728 wrote to memory of 2504	2728	2024-03-26_027350ab91d33e33c066b16b2acccf7b_cryptolocker.exe	28
PID 2728 wrote to memory of 2504	2728	2024-03-26_027350ab91d33e33c066b16b2acccf7b_cryptolocker.exe	28
PID 2728 wrote to memory of 2504	2728	2024-03-26_027350ab91d33e33c066b16b2acccf7b_cryptolocker.exe	28
PID 2728 wrote to memory of 2504	2728	2024-03-26_027350ab91d33e33c066b16b2acccf7b_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-03-26_027350ab91d33e33c066b16b2acccf7b_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-26_027350ab91d33e33c066b16b2acccf7b_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2728
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2504

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
97KB

MD5
eb1114bd799f4b9336e0e45e4e1f23a9

SHA1
c4b6422a8379a38eaea51d3a511ccb8d8d435cfb

SHA256
c16d5e3dfcbb566da8ab5d478318dd76d2e203ac34391f7b97c7abd5d30e01cc

SHA512
c91ba7e95c1ede62535528bc9b2046eccb0ec115e1c8b54730b3b07d651af9b96024d40c7b2ff78dc9497bcd11a7847e2b1cbebf160853267aafa3535d24adfc

Download Submit
memory/2504-15-0x00000000003F0000-0x00000000003F6000-memory.dmp

Filesize
24KB

Download
memory/2504-22-0x00000000001C0000-0x00000000001C6000-memory.dmp

Filesize
24KB

Download
memory/2728-0-0x0000000000320000-0x0000000000326000-memory.dmp

Filesize
24KB

Download
memory/2728-2-0x0000000000320000-0x0000000000326000-memory.dmp

Filesize
24KB

Download
memory/2728-1-0x0000000000460000-0x0000000000466000-memory.dmp

Filesize
24KB

Download