1dd9c941ed87b9973a1061f4605a9893b822fa7265ca54eb3f4a27e9dd276d24

Analysis

max time kernel
15s
max time network
123s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
31/05/2024, 19:24

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General

Target

2024-05-31_00604eab06bbcf13d48fde0f1e077f06_cryptolocker.exe
Size

34KB
MD5

00604eab06bbcf13d48fde0f1e077f06
SHA1

d1c4bf289e15e79906e56ffcf78c052c4261b2ce
SHA256

1dd9c941ed87b9973a1061f4605a9893b822fa7265ca54eb3f4a27e9dd276d24
SHA512

ac48ca90af3be01c75a69bf1dcb57d3bd6f1e766d0ee24ea4dfff22f9f145abbbef446dcd5d4ae483fce22f7280bd89e7fc4cbf106f388442591563657bd5d14
SSDEEP

384:bM7Q0pjC4GybxMv01d3AcASBQMf6i/zzzcYgUPSznStEkcsgqDx+:b/yC4GyNM01GuQMNXw2PSjSKkcJe+

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000e000000015a98-10.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2860	retln.exe

Loads dropped DLL 1 IoCs

pid	Process
1708	2024-05-31_00604eab06bbcf13d48fde0f1e077f06_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
1708	2024-05-31_00604eab06bbcf13d48fde0f1e077f06_cryptolocker.exe
2860	retln.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1708 wrote to memory of 2860	1708	2024-05-31_00604eab06bbcf13d48fde0f1e077f06_cryptolocker.exe	28
PID 1708 wrote to memory of 2860	1708	2024-05-31_00604eab06bbcf13d48fde0f1e077f06_cryptolocker.exe	28
PID 1708 wrote to memory of 2860	1708	2024-05-31_00604eab06bbcf13d48fde0f1e077f06_cryptolocker.exe	28
PID 1708 wrote to memory of 2860	1708	2024-05-31_00604eab06bbcf13d48fde0f1e077f06_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-31_00604eab06bbcf13d48fde0f1e077f06_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-31_00604eab06bbcf13d48fde0f1e077f06_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:1708
- 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:2860

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
34KB

MD5
efbf5a18770f812093d623650db64f4e

SHA1
f6adabc84008dbf50eeb50d76fe724a6f68641f0

SHA256
5c942bd951e8a03227cb9f318abf8ecd49b42b91eabaa9fefe273ad5d7efc1ec

SHA512
b60486508d4379d89c1ca33d4f9223467c9c38c471085fd3a46fb10650171e35ce53f4dc23b5a06db47fda6ca0cd460a3f140b19ff0b19fefdaaba866ca5098d

Download Submit
memory/1708-8-0x0000000000260000-0x0000000000266000-memory.dmp

Filesize
24KB

Download
memory/1708-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/1708-0-0x0000000000260000-0x0000000000266000-memory.dmp

Filesize
24KB

Download