553ae1b418199f5c21ee4c7533043de2add0edad3ed271dcfbb137cb0cf35e21

Analysis

max time kernel
150s
max time network
149s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
05/03/2024, 21:32

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General

Target

2024-03-05_41e1899ad2339a6b7aab49214515421d_cryptolocker.exe
Size

53KB
MD5

41e1899ad2339a6b7aab49214515421d
SHA1

d8317f4995ff72be638c5d32ef81d700ac6b5f06
SHA256

553ae1b418199f5c21ee4c7533043de2add0edad3ed271dcfbb137cb0cf35e21
SHA512

3a8459bfff195606bb2da0da5b3dce109eafdaa67fe667e279bb217097b09f88186bbfbeaa1cc805600282c211bc2c9c11eb70001168c2088ce5cf8a65a04214
SSDEEP

768:bIDOw9UiaCHfjnE0Sfa7ilR0p9u6p4ICNBCXK9XbTbmhTyms:bIDOw9a0DwitDZzcT2s

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000a00000001418d-10.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2904	lossy.exe

Loads dropped DLL 1 IoCs

pid	Process
2912	2024-03-05_41e1899ad2339a6b7aab49214515421d_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 2912 wrote to memory of 2904	2912	2024-03-05_41e1899ad2339a6b7aab49214515421d_cryptolocker.exe	28
PID 2912 wrote to memory of 2904	2912	2024-03-05_41e1899ad2339a6b7aab49214515421d_cryptolocker.exe	28
PID 2912 wrote to memory of 2904	2912	2024-03-05_41e1899ad2339a6b7aab49214515421d_cryptolocker.exe	28
PID 2912 wrote to memory of 2904	2912	2024-03-05_41e1899ad2339a6b7aab49214515421d_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-03-05_41e1899ad2339a6b7aab49214515421d_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-05_41e1899ad2339a6b7aab49214515421d_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2912
- C:\Users\Admin\AppData\Local\Temp\lossy.exe
  "C:\Users\Admin\AppData\Local\Temp\lossy.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\lossy.exe

Filesize
54KB

MD5
00de1b62308bc5b403bdb92213aa531b

SHA1
a1eb6534c275f4782195ec76bac27ff3e05ab373

SHA256
6d2409b6b4b1ee2ea2b6bf12b53c1f92409ec4ba7af44e7621a7cf789c274519

SHA512
c136900e49fbb97b61bb582f2ea654d6cdce6b36007261803a47e6fd956b7fcfe2768dcfbd840a7e3580ef0b1232b5d73f8a7d24bf7438d480aaa987bf0f6c78

Download Submit
memory/2904-16-0x0000000000320000-0x0000000000326000-memory.dmp

Filesize
24KB

Download
memory/2904-15-0x0000000000580000-0x0000000000586000-memory.dmp

Filesize
24KB

Download
memory/2912-0-0x0000000001C50000-0x0000000001C56000-memory.dmp

Filesize
24KB

Download
memory/2912-1-0x0000000001C90000-0x0000000001C96000-memory.dmp

Filesize
24KB

Download
memory/2912-8-0x0000000001C50000-0x0000000001C56000-memory.dmp

Filesize
24KB

Download