11e640d2964de9429f45e2d9e0df6bb542af42eed8c91b97e8e57c6ecc48c34b

Analysis

max time kernel
150s
max time network
154s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
24/02/2024, 07:45

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General

Target

2024-02-24_ea5df75e26e4009ac2dea79df15e60e3_cryptolocker.exe
Size

63KB
MD5

ea5df75e26e4009ac2dea79df15e60e3
SHA1

e5ed3557f6990f4a410c5f0c9a5927c57f11770a
SHA256

11e640d2964de9429f45e2d9e0df6bb542af42eed8c91b97e8e57c6ecc48c34b
SHA512

76a5dd551b97afb3e79041b6c901768572c56c17210a48b12be2f2f41a6368ec9f774d85d5711ce2d64079ee97b68fbfe5d6ae574ae346b802593483043b53af
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszsbKY1x/9lfL+gniDSZp3:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7S

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000b00000001224c-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x000b00000001224c-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
1904	hurok.exe

Loads dropped DLL 1 IoCs

pid	Process
2032	2024-02-24_ea5df75e26e4009ac2dea79df15e60e3_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
2032	2024-02-24_ea5df75e26e4009ac2dea79df15e60e3_cryptolocker.exe
1904	hurok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2032 wrote to memory of 1904	2032	2024-02-24_ea5df75e26e4009ac2dea79df15e60e3_cryptolocker.exe	26
PID 2032 wrote to memory of 1904	2032	2024-02-24_ea5df75e26e4009ac2dea79df15e60e3_cryptolocker.exe	26
PID 2032 wrote to memory of 1904	2032	2024-02-24_ea5df75e26e4009ac2dea79df15e60e3_cryptolocker.exe	26
PID 2032 wrote to memory of 1904	2032	2024-02-24_ea5df75e26e4009ac2dea79df15e60e3_cryptolocker.exe	26

C:\Users\Admin\AppData\Local\Temp\2024-02-24_ea5df75e26e4009ac2dea79df15e60e3_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-24_ea5df75e26e4009ac2dea79df15e60e3_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2032
- C:\Users\Admin\AppData\Local\Temp\hurok.exe
  "C:\Users\Admin\AppData\Local\Temp\hurok.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of UnmapMainImage
  PID:1904

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\hurok.exe

Filesize
63KB

MD5
4bcb8b9095ccda0c990f158ba68e96d4

SHA1
249e400a78625a57f5454b8b0f187fd3d16ec80b

SHA256
f2e60162cb5d181b96fe0ee57a6d830087bbba3254a88eeed72ef405e2cfc1ae

SHA512
170d96bfef2f607de47d3749e5e7246753ed5b61e81e35303cff67f1e85c9d3d0d87ee6775bcc5f5b31bb36285638400fc3ae6cb31460c44f61e52b13b04ac5d

Download Submit
memory/2032-0-0x0000000000230000-0x0000000000236000-memory.dmp

Filesize
24KB

Download
memory/2032-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2032-3-0x0000000000230000-0x0000000000236000-memory.dmp

Filesize
24KB

Download