401bd2a1c66782ec8dfacf99b6f948965fd7dc148bfeb8a1a54ad83d5244217b

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
07/03/2024, 23:22

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General

Target

2024-03-07_103a895ed4664a1f4bfea5fa029432ee_cryptolocker.exe
Size

46KB
MD5

103a895ed4664a1f4bfea5fa029432ee
SHA1

285657de7db2174183d90db4bfed648ff0b24a77
SHA256

401bd2a1c66782ec8dfacf99b6f948965fd7dc148bfeb8a1a54ad83d5244217b
SHA512

bb4249f48e8ad26487d3a1f7347c26a9d5de9ac6ae7107bfbe5f9af0a108f6f9605eebdc3f2bf1979deeb4c8ca9dd30b94bbdd5dd56f8092607edbb8d591a1d3
SSDEEP

768:Kf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGpebVIYLHA3Kxd:o1KhxqwtdgI2MyzNORQtOflIwoHNV2Xk

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000a000000014a94-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x000a000000014a94-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2816	hurok.exe

Loads dropped DLL 1 IoCs

pid	Process
2804	2024-03-07_103a895ed4664a1f4bfea5fa029432ee_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
2804	2024-03-07_103a895ed4664a1f4bfea5fa029432ee_cryptolocker.exe
2816	hurok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2804 wrote to memory of 2816	2804	2024-03-07_103a895ed4664a1f4bfea5fa029432ee_cryptolocker.exe	28
PID 2804 wrote to memory of 2816	2804	2024-03-07_103a895ed4664a1f4bfea5fa029432ee_cryptolocker.exe	28
PID 2804 wrote to memory of 2816	2804	2024-03-07_103a895ed4664a1f4bfea5fa029432ee_cryptolocker.exe	28
PID 2804 wrote to memory of 2816	2804	2024-03-07_103a895ed4664a1f4bfea5fa029432ee_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-03-07_103a895ed4664a1f4bfea5fa029432ee_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-07_103a895ed4664a1f4bfea5fa029432ee_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2804
- 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:2816

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
46KB

MD5
7833c63e8af20b31f3ed90d2e1aa45e5

SHA1
344f7a0fdf17b159dcac02531707f9e2e60d403a

SHA256
d54ce28656fa2e865a621da955658f3e0dbefdbc70509a23058cf8625f2d9c29

SHA512
b5f60da57cf59dbcde826c1a7d545f281df32d06f1fc0dcf1a2bdc55510c8a4b17e504e66308a4ea848a9f424ed269d56b5ebad3894458a604f57c7251161a7a

Download Submit
memory/2804-0-0x00000000002B0000-0x00000000002B6000-memory.dmp

Filesize
24KB

Download
memory/2804-2-0x00000000002B0000-0x00000000002B6000-memory.dmp

Filesize
24KB

Download
memory/2804-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2816-18-0x0000000000230000-0x0000000000236000-memory.dmp

Filesize
24KB

Download