de50fa6fb01a807ada9544f953473fad6a80ec0b807f96bf1e634f68b4dd3858

Analysis

max time kernel
148s
max time network
149s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
03/02/2024, 03:30

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General

Target

2024-02-03_3d0c357ff83d5bb6e3f7961f9c4b5814_cryptolocker.exe
Size

50KB
MD5

3d0c357ff83d5bb6e3f7961f9c4b5814
SHA1

8c1baeadb9588794ec9296dd391c3b19ee65aaf3
SHA256

de50fa6fb01a807ada9544f953473fad6a80ec0b807f96bf1e634f68b4dd3858
SHA512

c0f53c3d6e764c494e5f35f83f27d16cb9f90e9f9a5b37b7f480090046daca97ba86e119b9b9cf05485b7b652247b08509e6e9e8ea9d45cebca79f811ec74e38
SSDEEP

768:79inqyNR/QtOOtEvwDpjBK/rJ+Nw8qn8pKI94q:79mqyNhQMOtEvwDpjBxe8TpX9D

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/memory/2384-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000b000000014534-11.dat	CryptoLocker_rule2
behavioral1/memory/2384-15-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1744-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral1/memory/2384-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000b000000014534-11.dat	CryptoLocker_set1
behavioral1/memory/2384-15-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1744-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
1744	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2384	2024-02-03_3d0c357ff83d5bb6e3f7961f9c4b5814_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 2384 wrote to memory of 1744	2384	2024-02-03_3d0c357ff83d5bb6e3f7961f9c4b5814_cryptolocker.exe	28
PID 2384 wrote to memory of 1744	2384	2024-02-03_3d0c357ff83d5bb6e3f7961f9c4b5814_cryptolocker.exe	28
PID 2384 wrote to memory of 1744	2384	2024-02-03_3d0c357ff83d5bb6e3f7961f9c4b5814_cryptolocker.exe	28
PID 2384 wrote to memory of 1744	2384	2024-02-03_3d0c357ff83d5bb6e3f7961f9c4b5814_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-03_3d0c357ff83d5bb6e3f7961f9c4b5814_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-03_3d0c357ff83d5bb6e3f7961f9c4b5814_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2384
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1744

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\asih.exe

Filesize
50KB

MD5
87b24fe3ba7336f479ec3d65a168acea

SHA1
cffc9a69053387af40dbf462d07020c5750a9692

SHA256
74651dc5e184f2fb45fd21932d7e2c77a9c5b232bd3fefde77af043250cda2be

SHA512
959e0b0f3c24c3939c3abeea8fb0a4dfa49d3a519db1d1972f797472237575f9caab345501bdfdfe95d1fe72cb9d03f819dc9f82f31527bbca4022d1bb02b1a8

Download Submit
memory/1744-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1744-18-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/1744-20-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2384-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2384-1-0x0000000000350000-0x0000000000356000-memory.dmp

Filesize
24KB

Download
memory/2384-2-0x0000000000490000-0x0000000000496000-memory.dmp

Filesize
24KB

Download
memory/2384-3-0x0000000000350000-0x0000000000356000-memory.dmp

Filesize
24KB

Download
memory/2384-15-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download