434d921d35e1b54b79c1b55312d8e813294d30b92a0f52a6b557ff53cb8ab77b

Analysis

max time kernel
150s
max time network
156s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
30/05/2024, 06:34

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General

Target

2024-05-30_4fcf77872273dc403ef565af0f0b59c4_cryptolocker.exe
Size

48KB
MD5

4fcf77872273dc403ef565af0f0b59c4
SHA1

fe602fd5651215fd0073995309a358d19fa8d191
SHA256

434d921d35e1b54b79c1b55312d8e813294d30b92a0f52a6b557ff53cb8ab77b
SHA512

2ccb332638971ca342d02b536446a00901b281e6a7afa89a1902a75a11cbddc7f7e796cb25ba76bb9d45b464ac44f8397a3c9f170d9936830f07432a33faf5c1
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszsbKY1x5hjatsh7:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7e

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000c00000001226d-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x000c00000001226d-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2580	hurok.exe

Loads dropped DLL 1 IoCs

pid	Process
2196	2024-05-30_4fcf77872273dc403ef565af0f0b59c4_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
2196	2024-05-30_4fcf77872273dc403ef565af0f0b59c4_cryptolocker.exe
2580	hurok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2196 wrote to memory of 2580	2196	2024-05-30_4fcf77872273dc403ef565af0f0b59c4_cryptolocker.exe	28
PID 2196 wrote to memory of 2580	2196	2024-05-30_4fcf77872273dc403ef565af0f0b59c4_cryptolocker.exe	28
PID 2196 wrote to memory of 2580	2196	2024-05-30_4fcf77872273dc403ef565af0f0b59c4_cryptolocker.exe	28
PID 2196 wrote to memory of 2580	2196	2024-05-30_4fcf77872273dc403ef565af0f0b59c4_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-30_4fcf77872273dc403ef565af0f0b59c4_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-30_4fcf77872273dc403ef565af0f0b59c4_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2196
- 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:2580

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
48KB

MD5
ba69c9fa6b697270687a0a78efdf3685

SHA1
90f8a7761c363bc3cd05a41a882f523e49908fc4

SHA256
e10f3c200fd1dd22572422d30935e5924038e0a8e6f47b8cb118fda5ab4c1e69

SHA512
112bf6b186cd8f936324f188ff2d96f533c75653b719ae0e87ecb1c44d8af884371644e1bcc90d043d1a8f2ab64fe8e26c491d96def59a29486ab8e71c8cef3a

Download Submit
memory/2196-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2196-0-0x0000000000310000-0x0000000000316000-memory.dmp

Filesize
24KB

Download
memory/2196-8-0x0000000000310000-0x0000000000316000-memory.dmp

Filesize
24KB

Download
memory/2580-23-0x0000000000230000-0x0000000000236000-memory.dmp

Filesize
24KB

Download