f67bfcef6a8b4f4fdebdabbb4d344b651320ecf96e9beadf9d8765326740703c

Analysis

max time kernel
149s
max time network
152s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
25-02-2024 02:24

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General

Target

2024-02-25_073cbff64b3190425e6d6884785545fd_cryptolocker.exe
Size

51KB
MD5

073cbff64b3190425e6d6884785545fd
SHA1

524959a90d1a30bc09921a649da92ca0217e55fc
SHA256

f67bfcef6a8b4f4fdebdabbb4d344b651320ecf96e9beadf9d8765326740703c
SHA512

c3afc7d21526f8321889c0ec08acc3f224f5467b061c5ee74d7cd60ff13cd49358ced00aabda6637369757cded00c4695cf281c6d9a58611a62230b247f43b71
SSDEEP

1536:V6QFElP6n+gMQMOtEvwDpjeJQ7pojaklC:V6a+pOtEvwDpjp

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x0009000000012254-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x0009000000012254-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
1908	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2332	2024-02-25_073cbff64b3190425e6d6884785545fd_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 2332 wrote to memory of 1908	2332	2024-02-25_073cbff64b3190425e6d6884785545fd_cryptolocker.exe	28
PID 2332 wrote to memory of 1908	2332	2024-02-25_073cbff64b3190425e6d6884785545fd_cryptolocker.exe	28
PID 2332 wrote to memory of 1908	2332	2024-02-25_073cbff64b3190425e6d6884785545fd_cryptolocker.exe	28
PID 2332 wrote to memory of 1908	2332	2024-02-25_073cbff64b3190425e6d6884785545fd_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-25_073cbff64b3190425e6d6884785545fd_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-25_073cbff64b3190425e6d6884785545fd_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2332
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1908

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
51KB

MD5
483eda6671e874aa44b1b945e7f8d3c9

SHA1
0b8735de69fef60f94f2cf88bebc27c3007b9645

SHA256
d5f86f67f0dbb3df31bbd390fd6203e1a4598df3e21d542b2e34a12075cf1d3f

SHA512
f5da5388e2109cc39b287d748c02dab0d889e15edcb4d71b72c74bf35bc12200487f5ab2b1969ad913731ac371b8eec5dc4df150ff02dcbf0d54a2b6744d0975

Download Submit
memory/1908-15-0x0000000000370000-0x0000000000376000-memory.dmp

Filesize
24KB

Download
memory/2332-0-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2332-1-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download
memory/2332-7-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download