e3c6ea35e3c9e202cea4782fab80f84ec84d7284fd5a39a63178b9f598fb151d

Analysis

max time kernel
118s
max time network
122s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
14/02/2024, 17:51

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General

Target

2024-02-14_fec22acd2c9cceb6d243977502816afd_cryptolocker.exe
Size

41KB
MD5

fec22acd2c9cceb6d243977502816afd
SHA1

ef2f6527c5dab469507469971cd8e47fda0bb8e9
SHA256

e3c6ea35e3c9e202cea4782fab80f84ec84d7284fd5a39a63178b9f598fb151d
SHA512

4ad4767ffb171592815cc3d55a03da91d37f74506fdb079f455214bbeecdd417d8989685b44af0b61c008ebfaa0748e8f1f549ef8550122e2425496b9580dc7f
SSDEEP

768:b/yC4GyNM01GuQMNXw2PSjHPbSuYlW8PAsF:b/pYayGig5HjS3NPAsF

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000b000000012238-10.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2808	retln.exe

Loads dropped DLL 1 IoCs

pid	Process
2780	2024-02-14_fec22acd2c9cceb6d243977502816afd_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
2780	2024-02-14_fec22acd2c9cceb6d243977502816afd_cryptolocker.exe
2808	retln.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2780 wrote to memory of 2808	2780	2024-02-14_fec22acd2c9cceb6d243977502816afd_cryptolocker.exe	28
PID 2780 wrote to memory of 2808	2780	2024-02-14_fec22acd2c9cceb6d243977502816afd_cryptolocker.exe	28
PID 2780 wrote to memory of 2808	2780	2024-02-14_fec22acd2c9cceb6d243977502816afd_cryptolocker.exe	28
PID 2780 wrote to memory of 2808	2780	2024-02-14_fec22acd2c9cceb6d243977502816afd_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-14_fec22acd2c9cceb6d243977502816afd_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-14_fec22acd2c9cceb6d243977502816afd_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2780
- 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:2808

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
486debc12c28b625edd452322b0ff530

SHA1
62733399f9539175f41b36f4e9593e68ef1b9f99

SHA256
7567029ef289502626d9827490288576b6ae5c84609c24024adac4452c1360cc

SHA512
3520a58c7923022da5dce6244be8d7a4270031ba8bf186581099e4b386631701bae16938b7e0c328654c900a7c1d779f31d1ecf19a369f0bbe6437c3a2ce144d

Download Submit
memory/2780-0-0x00000000003F0000-0x00000000003F6000-memory.dmp

Filesize
24KB

Download
memory/2780-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2780-2-0x00000000003F0000-0x00000000003F6000-memory.dmp

Filesize
24KB

Download
memory/2808-16-0x0000000000270000-0x0000000000276000-memory.dmp

Filesize
24KB

Download