b4522c235424f4fc44c2bca2a10b6d973770f613e528fbf094896f3871bd41f3

Analysis

max time kernel
150s
max time network
150s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
15-03-2024 13:49

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General

Target

2024-03-15_86e34f98aea29bd142b5660c5c288de0_cryptolocker.exe
Size

385KB
MD5

86e34f98aea29bd142b5660c5c288de0
SHA1

0ba95e86bcac4bb0448b0a5c52e5d2959ceffff6
SHA256

b4522c235424f4fc44c2bca2a10b6d973770f613e528fbf094896f3871bd41f3
SHA512

76a3516d43bdda528dfd224840691b114d3603766c33e9f75520a81158e8cd8fe66dbb78091cfb753bf87301b2ea9e7cffac67f6f2546c8c290fa3358380716f
SSDEEP

6144:nnOsaQgAOjvrZFODJjBz3j1jTqQy6v2GGnugOtihzXR:nnOflT/ZFIjBz3xjTxynGUOUhXR

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000b0000000139e0-10.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2336	hasfj.exe

Loads dropped DLL 1 IoCs

pid	Process
2856	2024-03-15_86e34f98aea29bd142b5660c5c288de0_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 2856 wrote to memory of 2336	2856	2024-03-15_86e34f98aea29bd142b5660c5c288de0_cryptolocker.exe	28
PID 2856 wrote to memory of 2336	2856	2024-03-15_86e34f98aea29bd142b5660c5c288de0_cryptolocker.exe	28
PID 2856 wrote to memory of 2336	2856	2024-03-15_86e34f98aea29bd142b5660c5c288de0_cryptolocker.exe	28
PID 2856 wrote to memory of 2336	2856	2024-03-15_86e34f98aea29bd142b5660c5c288de0_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-03-15_86e34f98aea29bd142b5660c5c288de0_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-15_86e34f98aea29bd142b5660c5c288de0_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2856
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:2336

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
f600aa985b9761f39fc218b9acd0d613

SHA1
f4909a4e5c7b584ce98124fbbca2442274a5c8dc

SHA256
469528ef64e23cb2197aff7001bcbe1179ee27442922fcc67527ba72080ab7e0

SHA512
f8588afa7778d8abd8c39f27fcfc63cabc432586b21909c4c07847f91acbadab64e09d72f0379f6f6d4c602f2eac061424f5806d5c2cb2a4ccc4a67e693da307

Download Submit
memory/2336-15-0x0000000001CB0000-0x0000000001CB6000-memory.dmp

Filesize
24KB

Download
memory/2336-17-0x0000000000590000-0x0000000000596000-memory.dmp

Filesize
24KB

Download
memory/2856-0-0x00000000004C0000-0x00000000004C6000-memory.dmp

Filesize
24KB

Download
memory/2856-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/2856-3-0x00000000004C0000-0x00000000004C6000-memory.dmp

Filesize
24KB

Download