caae159ff0a7189f07fb8dd6eee4df34dd13b128ca9a90f2fd7f101de83c3012

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
24/02/2024, 14:37

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General

Target

2024-02-24_63212bd8c38c479107a12d1505acd5b7_cryptolocker.exe
Size

62KB
MD5

63212bd8c38c479107a12d1505acd5b7
SHA1

88f64c6c14eb029c23253ef2060ef5b7595f9b46
SHA256

caae159ff0a7189f07fb8dd6eee4df34dd13b128ca9a90f2fd7f101de83c3012
SHA512

63769a1b9323d062956d49e6c0868b3085d09864b3fb7714be7d243af3b867634341315589bc3805b24ee6b7c76381de7b977e44eafe2bf2dc6ec853640e5799
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszudnYTjipvF293VD9:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7Z

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000b000000012256-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x000b000000012256-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
1028	hurok.exe

Loads dropped DLL 1 IoCs

pid	Process
2300	2024-02-24_63212bd8c38c479107a12d1505acd5b7_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
2300	2024-02-24_63212bd8c38c479107a12d1505acd5b7_cryptolocker.exe
1028	hurok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2300 wrote to memory of 1028	2300	2024-02-24_63212bd8c38c479107a12d1505acd5b7_cryptolocker.exe	28
PID 2300 wrote to memory of 1028	2300	2024-02-24_63212bd8c38c479107a12d1505acd5b7_cryptolocker.exe	28
PID 2300 wrote to memory of 1028	2300	2024-02-24_63212bd8c38c479107a12d1505acd5b7_cryptolocker.exe	28
PID 2300 wrote to memory of 1028	2300	2024-02-24_63212bd8c38c479107a12d1505acd5b7_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-24_63212bd8c38c479107a12d1505acd5b7_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-24_63212bd8c38c479107a12d1505acd5b7_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2300
- 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:1028

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
62KB

MD5
6c2b845da245156b138f0c88851ea265

SHA1
9b34cda6d19966addf7781282f3a3b7d774341f5

SHA256
ac34584cfb8219172af4324d90aa0b8aafdabffa09782301ec1f2568a964cc15

SHA512
76d36e11176b25b00b18b073c2a6a024498eca8f0fa33a2c906a808b75fd4964d5dd15ad8f0e06b1d6fd53ba05f6eca20b677bb99cddb6a6d4057bcf8c24a8d9

Download Submit
memory/1028-17-0x00000000002B0000-0x00000000002B6000-memory.dmp

Filesize
24KB

Download
memory/2300-0-0x00000000002F0000-0x00000000002F6000-memory.dmp

Filesize
24KB

Download
memory/2300-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2300-8-0x00000000002F0000-0x00000000002F6000-memory.dmp

Filesize
24KB

Download