eb27a88f8463de21738a4b1e624b9fd0c882f7d9207cb1346e6297960cfb0cae

General

Target

2024-03-14_f5d07a6fe867476e0fa191cb58871661_cryptolocker.exe
Size

5.5MB
MD5

f5d07a6fe867476e0fa191cb58871661
SHA1

0fdc4797214a9a5fed3edd45c28475f95df06482
SHA256

eb27a88f8463de21738a4b1e624b9fd0c882f7d9207cb1346e6297960cfb0cae
SHA512

d44c29dcf7ec70aad03e6be199d2e58106852bf94c427ad1176a629bc14b26d332f94f2ac594e4d8ca9a890411cb4f0d7b60845da8c283a16d16e30fddce7225
SSDEEP

98304:tGiPCjI9nGdFD8nBHm/lOs4HucAmD/YpJJRsH9KsUbIP8Z/AzdKfeT1:fP7aa3uzmD/IJR09KbMPkT01

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 8 IoCs

resource	yara_rule
behavioral1/memory/2992-0-0x0000000000500000-0x0000000000D88000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2992-2-0x0000000000500000-0x0000000000D88000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2992-5-0x0000000000500000-0x0000000000D88000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x0008000000012254-20.dat	CryptoLocker_rule2
behavioral1/memory/2992-24-0x0000000000500000-0x0000000000D88000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2652-27-0x0000000000500000-0x0000000000D88000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2652-30-0x0000000000500000-0x0000000000D88000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2652-43-0x0000000000500000-0x0000000000D88000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 6 IoCs

resource	yara_rule
behavioral1/memory/2992-2-0x0000000000500000-0x0000000000D88000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2992-5-0x0000000000500000-0x0000000000D88000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2992-24-0x0000000000500000-0x0000000000D88000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2652-27-0x0000000000500000-0x0000000000D88000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2652-30-0x0000000000500000-0x0000000000D88000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2652-43-0x0000000000500000-0x0000000000D88000-memory.dmp	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2652	misid.exe

Loads dropped DLL 1 IoCs

pid	Process
2992	2024-03-14_f5d07a6fe867476e0fa191cb58871661_cryptolocker.exe

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2992	2024-03-14_f5d07a6fe867476e0fa191cb58871661_cryptolocker.exe
2652	misid.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2992 wrote to memory of 2652	2992	2024-03-14_f5d07a6fe867476e0fa191cb58871661_cryptolocker.exe	28
PID 2992 wrote to memory of 2652	2992	2024-03-14_f5d07a6fe867476e0fa191cb58871661_cryptolocker.exe	28
PID 2992 wrote to memory of 2652	2992	2024-03-14_f5d07a6fe867476e0fa191cb58871661_cryptolocker.exe	28
PID 2992 wrote to memory of 2652	2992	2024-03-14_f5d07a6fe867476e0fa191cb58871661_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-03-14_f5d07a6fe867476e0fa191cb58871661_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-14_f5d07a6fe867476e0fa191cb58871661_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2992
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  PID:2652

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

\Users\Admin\AppData\Local\Temp\misid.exe

Filesize
5.5MB

MD5
153e0185950bb9397962335f94a6b43b

SHA1
a06aceabf5e00eb32e7ed515a3b28ba9111f1e21

SHA256
678b4326fb6356bad35a32a16af6799208a6e80fb951c7ae5f90f636f1814f6e

SHA512
421a89664f8d098a859017088289ccc032e0d3f4d0865333f80b653550dd4a73662760f62150b317ca096332bc47934b11c8bd148b7dc2f86f5a4d721b151c23

Download Submit
memory/2652-32-0x00000000002B0000-0x00000000002B1000-memory.dmp

Filesize
4KB

Download
memory/2652-27-0x0000000000500000-0x0000000000D88000-memory.dmp

Filesize
8.5MB

Download
memory/2652-43-0x0000000000500000-0x0000000000D88000-memory.dmp

Filesize
8.5MB

Download
memory/2652-39-0x00000000002D0000-0x00000000002D6000-memory.dmp

Filesize
24KB

Download
memory/2652-36-0x0000000000310000-0x0000000000316000-memory.dmp

Filesize
24KB

Download
memory/2652-34-0x00000000774F0000-0x00000000774F1000-memory.dmp

Filesize
4KB

Download
memory/2652-29-0x00000000002B0000-0x00000000002B1000-memory.dmp

Filesize
4KB

Download
memory/2652-30-0x0000000000500000-0x0000000000D88000-memory.dmp

Filesize
8.5MB

Download
memory/2992-8-0x00000000774F0000-0x00000000774F1000-memory.dmp

Filesize
4KB

Download
memory/2992-24-0x0000000000500000-0x0000000000D88000-memory.dmp

Filesize
8.5MB

Download
memory/2992-4-0x00000000001C0000-0x00000000001C1000-memory.dmp

Filesize
4KB

Download
memory/2992-1-0x00000000001C0000-0x00000000001C1000-memory.dmp

Filesize
4KB

Download
memory/2992-12-0x00000000001E0000-0x00000000001E6000-memory.dmp

Filesize
24KB

Download
memory/2992-10-0x00000000001E0000-0x00000000001E6000-memory.dmp

Filesize
24KB

Download
memory/2992-0-0x0000000000500000-0x0000000000D88000-memory.dmp

Filesize
8.5MB

Download
memory/2992-11-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/2992-7-0x00000000001C0000-0x00000000001C1000-memory.dmp

Filesize
4KB

Download
memory/2992-2-0x0000000000500000-0x0000000000D88000-memory.dmp

Filesize
8.5MB

Download
memory/2992-5-0x0000000000500000-0x0000000000D88000-memory.dmp

Filesize
8.5MB

Download

Analysis

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