8fdb6ccafc3134a3b16a3cb294f8095c233385f67705a0f036993cf5498fa72f

Analysis

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

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
20/02/2024, 11:33

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General

Target

2024-02-20_5ad232ed38970f40032e835980a99210_cryptolocker.exe
Size

45KB
MD5

5ad232ed38970f40032e835980a99210
SHA1

c3d8c2f6acc380070302c565b6bed7f6ddbfff08
SHA256

8fdb6ccafc3134a3b16a3cb294f8095c233385f67705a0f036993cf5498fa72f
SHA512

566c938159fce5012f76b332c6e2099d08fe2db43ac9681bf1f25af219dc72348edcb605c4950f3e5281854d55e3232c60ce70a7879e34d4c0bca587f3b0bee2
SSDEEP

768:Kf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGpebVIYLHA3KxD:o1KhxqwtdgI2MyzNORQtOflIwoHNV2Xm

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000a0000000126af-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x000a0000000126af-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
1096	hurok.exe

Loads dropped DLL 1 IoCs

pid	Process
3048	2024-02-20_5ad232ed38970f40032e835980a99210_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
3048	2024-02-20_5ad232ed38970f40032e835980a99210_cryptolocker.exe
1096	hurok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 3048 wrote to memory of 1096	3048	2024-02-20_5ad232ed38970f40032e835980a99210_cryptolocker.exe	28
PID 3048 wrote to memory of 1096	3048	2024-02-20_5ad232ed38970f40032e835980a99210_cryptolocker.exe	28
PID 3048 wrote to memory of 1096	3048	2024-02-20_5ad232ed38970f40032e835980a99210_cryptolocker.exe	28
PID 3048 wrote to memory of 1096	3048	2024-02-20_5ad232ed38970f40032e835980a99210_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-20_5ad232ed38970f40032e835980a99210_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-20_5ad232ed38970f40032e835980a99210_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:3048
- 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:1096

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
494e5af9a74885eeb1a925e08c3ee540

SHA1
87f0926b580cf6b029893809bd6e54936af1a095

SHA256
9192f752c9bf6e6d3c48861a927a9280d72ca494198b00993a6d15b010454c46

SHA512
0d664b376c3d8ff2e2b49b3fb52fb37ee42fc1a47f0867110089d1fa5da3fb99eda4a781cc98004bb73cee8eb41eb94d5222eaf6d162153da81e656adde5a016

Download Submit
memory/1096-20-0x00000000001C0000-0x00000000001C6000-memory.dmp

Filesize
24KB

Download
memory/3048-0-0x0000000000310000-0x0000000000316000-memory.dmp

Filesize
24KB

Download
memory/3048-1-0x0000000000310000-0x0000000000316000-memory.dmp

Filesize
24KB

Download
memory/3048-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download