9212692346b2607184e7a510ea7dd4700c96cd3c7567a5b7e0aef4fee3635332

Analysis

max time kernel
119s
max time network
123s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
19/04/2024, 03:24

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General

Target

2024-04-19_0504754cc6c21bcde03258c555ec4e5b_cryptolocker.exe
Size

42KB
MD5

0504754cc6c21bcde03258c555ec4e5b
SHA1

ac6e473648af61dba28a033fab6ff9a1263d366a
SHA256

9212692346b2607184e7a510ea7dd4700c96cd3c7567a5b7e0aef4fee3635332
SHA512

3e7241ba4720357ae8d81770af585bf76e6bae7a43a49745b4b360ecad12caa1c64fbc84db85969420c73a4e25c0fe3e7b02e2575d4015fd66dd085ff7b78078
SSDEEP

768:b/yC4GyNM01GuQMNXw2PSjHPbSuYlW8PAx:b/pYayGig5HjS3NPAx

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000a000000014a94-10.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2816	retln.exe

Loads dropped DLL 1 IoCs

pid	Process
2812	2024-04-19_0504754cc6c21bcde03258c555ec4e5b_cryptolocker.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of UnmapMainImage 2 IoCs

pid	Process
2812	2024-04-19_0504754cc6c21bcde03258c555ec4e5b_cryptolocker.exe
2816	retln.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2812 wrote to memory of 2816	2812	2024-04-19_0504754cc6c21bcde03258c555ec4e5b_cryptolocker.exe	28
PID 2812 wrote to memory of 2816	2812	2024-04-19_0504754cc6c21bcde03258c555ec4e5b_cryptolocker.exe	28
PID 2812 wrote to memory of 2816	2812	2024-04-19_0504754cc6c21bcde03258c555ec4e5b_cryptolocker.exe	28
PID 2812 wrote to memory of 2816	2812	2024-04-19_0504754cc6c21bcde03258c555ec4e5b_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-19_0504754cc6c21bcde03258c555ec4e5b_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-19_0504754cc6c21bcde03258c555ec4e5b_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2812
- C:\Users\Admin\AppData\Local\Temp\retln.exe
  "C:\Users\Admin\AppData\Local\Temp\retln.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of UnmapMainImage
  PID:2816

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\retln.exe

Filesize
42KB

MD5
618fb51cfedb0b7aeb32f10b76f48742

SHA1
9fd3c5b7df49f1ccd56d93f4b97da84ac47e25c7

SHA256
f8ba8ee12d5532b0bb1b049830eab22b35dbe90f3134129780758dfec4b8f325

SHA512
184ce562d1a9c80b4c3224a502295769c595d13d8d1f956cca60378a2c45187311b84b786d1cdff155f55fdbc51b03089cc61a9b8fe5ed194219c818c73ad85f

Download Submit
memory/2812-0-0x0000000000270000-0x0000000000276000-memory.dmp

Filesize
24KB

Download
memory/2812-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2812-2-0x0000000000270000-0x0000000000276000-memory.dmp

Filesize
24KB

Download
memory/2816-17-0x00000000002F0000-0x00000000002F6000-memory.dmp

Filesize
24KB

Download