8622a32af73a35f30c36ffc70df6f54b98df7a66682cf40cdee05f5a06a42e73

Analysis

max time kernel
117s
max time network
121s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
14/02/2024, 03:04

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General

Target

2024-02-14_dfe031e8be8cec744490cc684c053e5b_cryptolocker.exe
Size

39KB
MD5

dfe031e8be8cec744490cc684c053e5b
SHA1

a001cc8b84541535d75bbfc78a87ae7ae34bae0e
SHA256

8622a32af73a35f30c36ffc70df6f54b98df7a66682cf40cdee05f5a06a42e73
SHA512

49d13c83cf0bc817da451fa8a4fa5a558356da7dbf6dbd042f49bb73a32873594a7a69a674eb4905dda8c6fdaa973b90c51d1d4a05318dd9c9c6b99a68a00eab
SSDEEP

384:bM7Q0pjC4GybxMv01d3AcASBQMf6i/zzzcYgUPSznHzl6AJvDSuYlWjC:b/yC4GyNM01GuQMNXw2PSjHPbSuYlWe

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x0009000000012232-10.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2364	retln.exe

Loads dropped DLL 1 IoCs

pid	Process
688	2024-02-14_dfe031e8be8cec744490cc684c053e5b_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
688	2024-02-14_dfe031e8be8cec744490cc684c053e5b_cryptolocker.exe
2364	retln.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 688 wrote to memory of 2364	688	2024-02-14_dfe031e8be8cec744490cc684c053e5b_cryptolocker.exe	28
PID 688 wrote to memory of 2364	688	2024-02-14_dfe031e8be8cec744490cc684c053e5b_cryptolocker.exe	28
PID 688 wrote to memory of 2364	688	2024-02-14_dfe031e8be8cec744490cc684c053e5b_cryptolocker.exe	28
PID 688 wrote to memory of 2364	688	2024-02-14_dfe031e8be8cec744490cc684c053e5b_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-14_dfe031e8be8cec744490cc684c053e5b_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-14_dfe031e8be8cec744490cc684c053e5b_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:688
- 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:2364

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
39KB

MD5
83ca8a1876bce639ab36af93d3d701c7

SHA1
84e87e9cb03144aea83b73c136f69b01a040b150

SHA256
89d1e40933243acf6c92376062dd2fbb6b06be7d87f57536ed631f2eb586263b

SHA512
d245a545a647f0e7de4924906e3718c88f9e5e64472ab7ae70201dffea74543cd08012600ffa7123f36b4d1dcd6601d6f11f84492ed9a440bed07bc4633b654e

Download Submit
memory/688-0-0x00000000003E0000-0x00000000003E6000-memory.dmp

Filesize
24KB

Download
memory/688-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/688-2-0x00000000003E0000-0x00000000003E6000-memory.dmp

Filesize
24KB

Download
memory/2364-18-0x00000000002F0000-0x00000000002F6000-memory.dmp

Filesize
24KB

Download