681b083ec7772bc715f3afcd987dd4e0aba57e73136698efbe05e3bcf44bfbb4

Analysis

max time kernel
150s
max time network
153s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
09/03/2024, 14:30

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General

Target

2024-03-09_3f55862c0d9b6548a6af6f2c449ab293_cryptolocker.exe
Size

386KB
MD5

3f55862c0d9b6548a6af6f2c449ab293
SHA1

53cdd218c288d258a6dbaaddf7abfa7ad0ea4233
SHA256

681b083ec7772bc715f3afcd987dd4e0aba57e73136698efbe05e3bcf44bfbb4
SHA512

75a6fa4872cbf9cb30e827d83cc8b5b7b2df4c4bdbc13afc55cf6617ddc4b07f313a71fc2887c262efde4cc05a980d134c34d7b48064939000345761489fb9cf
SSDEEP

6144:nnOsaQgAOjvrZFODJjBz3j1jTqQy6v2GGnugOtihzX0:nnOflT/ZFIjBz3xjTxynGUOUhX0

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000e00000001225e-10.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2864	hasfj.exe

Loads dropped DLL 1 IoCs

pid	Process
2172	2024-03-09_3f55862c0d9b6548a6af6f2c449ab293_cryptolocker.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2172 wrote to memory of 2864	2172	2024-03-09_3f55862c0d9b6548a6af6f2c449ab293_cryptolocker.exe	28
PID 2172 wrote to memory of 2864	2172	2024-03-09_3f55862c0d9b6548a6af6f2c449ab293_cryptolocker.exe	28
PID 2172 wrote to memory of 2864	2172	2024-03-09_3f55862c0d9b6548a6af6f2c449ab293_cryptolocker.exe	28
PID 2172 wrote to memory of 2864	2172	2024-03-09_3f55862c0d9b6548a6af6f2c449ab293_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-03-09_3f55862c0d9b6548a6af6f2c449ab293_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-09_3f55862c0d9b6548a6af6f2c449ab293_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2172
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:2864

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\hasfj.exe

Filesize
386KB

MD5
a16bfbc9c148feda9179b4993c2bec71

SHA1
7701321252d0df0638966eebea0326c63286d9a2

SHA256
cd6aac062cbc02acfbb7e970034fe8888f131fdf20392f390761f47262dd9f8f

SHA512
052df339a6c415a8a466aeb4dacc79491a14595984ead7eff4fd24f77955f677b90f7dd200fa6d3747c7aff901da4fa32e841501b540b2d8db4448b0b290ee58

Download Submit
memory/2172-0-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/2172-1-0x0000000001CA0000-0x0000000001CA6000-memory.dmp

Filesize
24KB

Download
memory/2172-7-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/2864-15-0x0000000000350000-0x0000000000356000-memory.dmp

Filesize
24KB

Download
memory/2864-18-0x0000000000330000-0x0000000000336000-memory.dmp

Filesize
24KB

Download