2fa7e88238ebd7c8099b80b091492418d6c7c0bc448ab989470bc7744e4092a9

Analysis

max time kernel
121s
max time network
124s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
24/05/2024, 00:29

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General

Target

2024-05-24_3c0b0fbd17ca74f81efa58631836c62d_cryptolocker.exe
Size

44KB
MD5

3c0b0fbd17ca74f81efa58631836c62d
SHA1

c6322394ca428ea8355341fb2d4e630e043af3dd
SHA256

2fa7e88238ebd7c8099b80b091492418d6c7c0bc448ab989470bc7744e4092a9
SHA512

1834004a178ca645310c9c698eddc13768c10e748dd35bcdb17fcf4d4556586ca59ffa3c39d5b72db592ebebf920365a43ac5f578286d6845986026eb535537c
SSDEEP

768:b/yC4GyNM01GuQMNXw2PSjHPbSuYlW8PAM:b/pYayGig5HjS3NPAM

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x0009000000015c5d-14.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2800	retln.exe

Loads dropped DLL 1 IoCs

pid	Process
2244	2024-05-24_3c0b0fbd17ca74f81efa58631836c62d_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
2244	2024-05-24_3c0b0fbd17ca74f81efa58631836c62d_cryptolocker.exe
2800	retln.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2244 wrote to memory of 2800	2244	2024-05-24_3c0b0fbd17ca74f81efa58631836c62d_cryptolocker.exe	28
PID 2244 wrote to memory of 2800	2244	2024-05-24_3c0b0fbd17ca74f81efa58631836c62d_cryptolocker.exe	28
PID 2244 wrote to memory of 2800	2244	2024-05-24_3c0b0fbd17ca74f81efa58631836c62d_cryptolocker.exe	28
PID 2244 wrote to memory of 2800	2244	2024-05-24_3c0b0fbd17ca74f81efa58631836c62d_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-24_3c0b0fbd17ca74f81efa58631836c62d_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-24_3c0b0fbd17ca74f81efa58631836c62d_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2244
- 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:2800

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

C:\Users\Admin\AppData\Local\Temp\retln.exe

Filesize
44KB

MD5
7a85d703322c5a4be3be29c020e6e849

SHA1
ff8262e0722655a52dece36d01aedc393b3cbd0e

SHA256
f9008983a2254f3489e05030feb8053342c10c617fb17ee3adfaaa6c5b2e39ff

SHA512
e4ac7608792de784abd5c119fb0ca87c267d05e27200bc89dc440c97942e4f1b2bc2c4756b9b4265d647b36c6cdf36b8b4fbdd549edc9ff0ea68becc382deb0e

Download Submit
memory/2244-8-0x00000000003B0000-0x00000000003B6000-memory.dmp

Filesize
24KB

Download
memory/2244-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2244-0-0x00000000003B0000-0x00000000003B6000-memory.dmp

Filesize
24KB

Download
memory/2800-23-0x00000000003A0000-0x00000000003A6000-memory.dmp

Filesize
24KB

Download