14e58d2e7f8608016029d92e7fff6ec542c28c640119072d26d208d078324b0e

Analysis

max time kernel
122s
max time network
137s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
19/02/2024, 16:40

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General

Target

2024-02-19_85f149ceccbb32446d41875db4652d30_cryptolocker.exe
Size

40KB
MD5

85f149ceccbb32446d41875db4652d30
SHA1

341c9e4e976e7442a56be1029cf5aab566e77e92
SHA256

14e58d2e7f8608016029d92e7fff6ec542c28c640119072d26d208d078324b0e
SHA512

8b8d0403636df3b9cd7fe7bfc9f22b54e5f0ca1b79c0a60a6cf31c115064c35aafdae1143b7adb6666ee9eed0dae4d4eb6e8c350cf97c7b47dbe414a21bb9d2a
SSDEEP

768:b/yC4GyNM01GuQMNXw2PSjHPbSuYlW8PA9Dm:b/pYayGig5HjS3NPA9Dm

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x0009000000012252-10.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2728	retln.exe

Loads dropped DLL 1 IoCs

pid	Process
2672	2024-02-19_85f149ceccbb32446d41875db4652d30_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
2672	2024-02-19_85f149ceccbb32446d41875db4652d30_cryptolocker.exe
2728	retln.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2672 wrote to memory of 2728	2672	2024-02-19_85f149ceccbb32446d41875db4652d30_cryptolocker.exe	28
PID 2672 wrote to memory of 2728	2672	2024-02-19_85f149ceccbb32446d41875db4652d30_cryptolocker.exe	28
PID 2672 wrote to memory of 2728	2672	2024-02-19_85f149ceccbb32446d41875db4652d30_cryptolocker.exe	28
PID 2672 wrote to memory of 2728	2672	2024-02-19_85f149ceccbb32446d41875db4652d30_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-19_85f149ceccbb32446d41875db4652d30_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-19_85f149ceccbb32446d41875db4652d30_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2672
- 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:2728

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
41KB

MD5
d0ae42076ac90a047476148dd9b775fa

SHA1
5d89c7e54e74694623b2247d71ba59a901bbb52d

SHA256
f7140a492ac96d36b0fabd4db5296636eb2ef53fb569002e8b8328f62237286f

SHA512
306a7daae02def09b4fe136c37b4c6a6c01895abdd31f8fb00344beda043b11b4ea095357c25cccb9490fdcae57b4512269158784c9e47d9314fbe9135a9f02d

Download Submit
memory/2672-0-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/2672-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2672-8-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/2728-17-0x0000000000270000-0x0000000000276000-memory.dmp

Filesize
24KB

Download