dc81ee23b98216fd2089b0f38979d5d11fa722d465007435ded168deda04b99a

Analysis

max time kernel
150s
max time network
151s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
23-02-2024 16:56

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General

Target

2024-02-23_fc1c7b72b349c8002324bf748075de71_cryptolocker.exe
Size

45KB
MD5

fc1c7b72b349c8002324bf748075de71
SHA1

0f30e279cf4fdf67b6163be3a400ecabfb9178ec
SHA256

dc81ee23b98216fd2089b0f38979d5d11fa722d465007435ded168deda04b99a
SHA512

c1893ae8a14272dd519147a3c45a5978461a66287fc5d0f7ad9354d87342a8fd789c993e7a3c7b75f4edf5deede3268a39cdefef5d3bd2af89ea71e6dd8be446
SSDEEP

768:Kf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGpebVIYLHA3KxA:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XR

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000c00000001224f-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x000c00000001224f-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2936	hurok.exe

Loads dropped DLL 1 IoCs

pid	Process
1984	2024-02-23_fc1c7b72b349c8002324bf748075de71_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
1984	2024-02-23_fc1c7b72b349c8002324bf748075de71_cryptolocker.exe
2936	hurok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1984 wrote to memory of 2936	1984	2024-02-23_fc1c7b72b349c8002324bf748075de71_cryptolocker.exe	28
PID 1984 wrote to memory of 2936	1984	2024-02-23_fc1c7b72b349c8002324bf748075de71_cryptolocker.exe	28
PID 1984 wrote to memory of 2936	1984	2024-02-23_fc1c7b72b349c8002324bf748075de71_cryptolocker.exe	28
PID 1984 wrote to memory of 2936	1984	2024-02-23_fc1c7b72b349c8002324bf748075de71_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-23_fc1c7b72b349c8002324bf748075de71_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-23_fc1c7b72b349c8002324bf748075de71_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:1984
- 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:2936

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
45KB

MD5
6b0d8b4e1f7d01a4f1ef691ad67b38d9

SHA1
d301954569390c55e2078451aae47d9d8ca097ad

SHA256
f476062d6696fa0aca36d9a2aef758a9f4c269fb1da6ef27729231099cba1c89

SHA512
ccd3838a03e4874254ebf0b10efd9fdc8f66b2e937cb42da5aa41eeb717c9c022a714a2b439ac7a03472711c293dc3d093a59a3d0d05105b0c25ac34ccc9856f

Download Submit
memory/1984-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/1984-8-0x0000000000200000-0x0000000000206000-memory.dmp

Filesize
24KB

Download
memory/1984-0-0x0000000000200000-0x0000000000206000-memory.dmp

Filesize
24KB

Download
memory/2936-23-0x00000000003C0000-0x00000000003C6000-memory.dmp

Filesize
24KB

Download