31461cf64207787ca6bfb43b9c4ba1093ee6e97b4e0af0eb118c4f51b86b1258

Analysis

max time kernel
118s
max time network
121s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
11-03-2024 14:54

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General

Target

2024-03-11_4ac0ae2335ad35f399cb1052de715ed6_cryptolocker.exe
Size

36KB
MD5

4ac0ae2335ad35f399cb1052de715ed6
SHA1

7279d3e469aca4e36fa48dcd770a1130633640a4
SHA256

31461cf64207787ca6bfb43b9c4ba1093ee6e97b4e0af0eb118c4f51b86b1258
SHA512

f3c1ef67289f90d9ca0f1f928c720c2c905feb7c3da182c09578edd36fb2aff00178417f87ab2bd43e1747e185844d39b76aa38ff3640c1cb3f636d0b925dac6
SSDEEP

384:bM7Q0pjC4GybxMv01d3AcASBQMf6i/zzzcYgUPSzn1KkZCb9q8Iuf:b/yC4GyNM01GuQMNXw2PSj1Pqq85

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000b00000001224e-10.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2776	retln.exe

Loads dropped DLL 1 IoCs

pid	Process
2884	2024-03-11_4ac0ae2335ad35f399cb1052de715ed6_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
2884	2024-03-11_4ac0ae2335ad35f399cb1052de715ed6_cryptolocker.exe
2776	retln.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2884 wrote to memory of 2776	2884	2024-03-11_4ac0ae2335ad35f399cb1052de715ed6_cryptolocker.exe	28
PID 2884 wrote to memory of 2776	2884	2024-03-11_4ac0ae2335ad35f399cb1052de715ed6_cryptolocker.exe	28
PID 2884 wrote to memory of 2776	2884	2024-03-11_4ac0ae2335ad35f399cb1052de715ed6_cryptolocker.exe	28
PID 2884 wrote to memory of 2776	2884	2024-03-11_4ac0ae2335ad35f399cb1052de715ed6_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-03-11_4ac0ae2335ad35f399cb1052de715ed6_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-11_4ac0ae2335ad35f399cb1052de715ed6_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2884
- 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:2776

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
36KB

MD5
2c6e9223058f4068329632406ae87b87

SHA1
610978461b8930b79576ba11c93fc19825d3b0a9

SHA256
6dd191dfb79dc6532b1181deeaf4bef7f62bda468cb43e95d8b8d2ee6a30b038

SHA512
7211b7f958899944b7d61619a7d862dbb63f960bb6833fce6b03cf771b379b1bd6d1ea19a1731e678f477c05c5e4973b096422c2a7ce9ef0b4f5dda9eba3f34e

Download Submit
memory/2776-18-0x00000000004C0000-0x00000000004C6000-memory.dmp

Filesize
24KB

Download
memory/2884-0-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/2884-1-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/2884-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download