fa8e629ef82d6ed5c81e75ae733b36a98551a81c091c5b09da1b8ece4368d94b

Analysis

max time kernel
149s
max time network
153s
platform
windows7_x64
resource
win7-20240319-en
resource tags

arch:x64arch:x86image:win7-20240319-enlocale:en-usos:windows7-x64system
submitted
11/04/2024, 07:30

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General

Target

2024-04-11_336c5ff66ca5350f92f07a6070b44d12_cryptolocker.exe
Size

67KB
MD5

336c5ff66ca5350f92f07a6070b44d12
SHA1

fea23ffdd100d2cea878863c3e3528aec043ca11
SHA256

fa8e629ef82d6ed5c81e75ae733b36a98551a81c091c5b09da1b8ece4368d94b
SHA512

8e9ae9b35456372bc797dbfc31578c2712d625842d73cef79c30e7b57cc02bb125c99de2eca95a3176b2883d4e6e4376b640ef6fc50168766b4929c5bd04eff2
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszudnYTjipvF293vaRLEz:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7L

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000b0000000121c5-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x000b0000000121c5-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
1044	hurok.exe

Loads dropped DLL 1 IoCs

pid	Process
2080	2024-04-11_336c5ff66ca5350f92f07a6070b44d12_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
2080	2024-04-11_336c5ff66ca5350f92f07a6070b44d12_cryptolocker.exe
1044	hurok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2080 wrote to memory of 1044	2080	2024-04-11_336c5ff66ca5350f92f07a6070b44d12_cryptolocker.exe	28
PID 2080 wrote to memory of 1044	2080	2024-04-11_336c5ff66ca5350f92f07a6070b44d12_cryptolocker.exe	28
PID 2080 wrote to memory of 1044	2080	2024-04-11_336c5ff66ca5350f92f07a6070b44d12_cryptolocker.exe	28
PID 2080 wrote to memory of 1044	2080	2024-04-11_336c5ff66ca5350f92f07a6070b44d12_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-11_336c5ff66ca5350f92f07a6070b44d12_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-11_336c5ff66ca5350f92f07a6070b44d12_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2080
- 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:1044

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
67KB

MD5
55668037c92b4cc6e231243ba9e55a6f

SHA1
960bd77a2f0fe9cb1e0a416f4144b4ac430dfbdc

SHA256
e212b5010b3a761a35769ae871c0b1ce322614ba4f139e4f31d01b5c8be9850c

SHA512
203af5993e9981f10d406117e141f7f62a3421697793a07e2480fd5bc0219c457c85bdfab32e9dc3d1e3833e729c6ee08d22aafe29b48722c510bfd93e9f4320

Download Submit
memory/2080-0-0x0000000000230000-0x0000000000236000-memory.dmp

Filesize
24KB

Download
memory/2080-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2080-7-0x0000000000230000-0x0000000000236000-memory.dmp

Filesize
24KB

Download