dcfbd06e897345ca0e903f2aa32c72d985f2cc7308eac267cca274801d97137a

Analysis

max time kernel
150s
max time network
149s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
25/01/2024, 00:42

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General

Target

2024-01-25_c156934efa1f51b1a8f48d450995cc7f_cryptolocker.exe
Size

64KB
MD5

c156934efa1f51b1a8f48d450995cc7f
SHA1

826fb71a11c847086945b032d975fa189766b852
SHA256

dcfbd06e897345ca0e903f2aa32c72d985f2cc7308eac267cca274801d97137a
SHA512

5ef06cd24a42b1b60f2b7375a34d89b4049b288293d51c75871ecced0b17f40ef4bd3db68a969a0d2aceece3ba03c32168be9d73f6081070b5f198759d422a04
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszsbKY1x/9lfL+gniDSA92:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7U

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x0009000000014826-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x0009000000014826-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
3012	hurok.exe

Loads dropped DLL 1 IoCs

pid	Process
2020	2024-01-25_c156934efa1f51b1a8f48d450995cc7f_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
2020	2024-01-25_c156934efa1f51b1a8f48d450995cc7f_cryptolocker.exe
3012	hurok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2020 wrote to memory of 3012	2020	2024-01-25_c156934efa1f51b1a8f48d450995cc7f_cryptolocker.exe	28
PID 2020 wrote to memory of 3012	2020	2024-01-25_c156934efa1f51b1a8f48d450995cc7f_cryptolocker.exe	28
PID 2020 wrote to memory of 3012	2020	2024-01-25_c156934efa1f51b1a8f48d450995cc7f_cryptolocker.exe	28
PID 2020 wrote to memory of 3012	2020	2024-01-25_c156934efa1f51b1a8f48d450995cc7f_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-01-25_c156934efa1f51b1a8f48d450995cc7f_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-25_c156934efa1f51b1a8f48d450995cc7f_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2020
- 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:3012

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
64KB

MD5
dbdb3905a19f164f51d1548c3747b2ba

SHA1
24f0b0f0d8aed849e6c35183d496f24a42554189

SHA256
69185c062485b59a18cada1d25dccb0bee34a7ea690b9a16b8ae77cb2f3bdce9

SHA512
c65de63c0364487ce30394fd52a2edd8586dcb2529fc0d1c6ae8f8325f7bdf4575e788cb676342abce410c4ee5840f32ddb680ef0fc639e4025c070a0835f2ae

Download Submit
memory/2020-0-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2020-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2020-8-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/3012-18-0x00000000003B0000-0x00000000003B6000-memory.dmp

Filesize
24KB

Download