99a623b69e96bf4a1f3a1dbafe129db518992d989f1901f7286f36d53f121fde

Analysis

max time kernel
150s
max time network
153s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
24-05-2024 15:01

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General

Target

2024-05-24_ea289329d7a57dde24c6acae4cf553c3_cryptolocker.exe
Size

54KB
MD5

ea289329d7a57dde24c6acae4cf553c3
SHA1

fd6caf0485c473600ac4092558adc7eeed178cfa
SHA256

99a623b69e96bf4a1f3a1dbafe129db518992d989f1901f7286f36d53f121fde
SHA512

d1c35957f414b21674a28e58b6e85b3d64acde16bfb775784203f432a845d2679b4cc61dc9d023872f22cfbc606d46810d3eef41985548f98810b0ccb8f98dba
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszsbKY1xzpAIKx0:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7A

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000a000000012286-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x000a000000012286-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
3020	hurok.exe

Loads dropped DLL 1 IoCs

pid	Process
2280	2024-05-24_ea289329d7a57dde24c6acae4cf553c3_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
2280	2024-05-24_ea289329d7a57dde24c6acae4cf553c3_cryptolocker.exe
3020	hurok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2280 wrote to memory of 3020	2280	2024-05-24_ea289329d7a57dde24c6acae4cf553c3_cryptolocker.exe	28
PID 2280 wrote to memory of 3020	2280	2024-05-24_ea289329d7a57dde24c6acae4cf553c3_cryptolocker.exe	28
PID 2280 wrote to memory of 3020	2280	2024-05-24_ea289329d7a57dde24c6acae4cf553c3_cryptolocker.exe	28
PID 2280 wrote to memory of 3020	2280	2024-05-24_ea289329d7a57dde24c6acae4cf553c3_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-24_ea289329d7a57dde24c6acae4cf553c3_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-24_ea289329d7a57dde24c6acae4cf553c3_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2280
- 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:3020

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
54KB

MD5
6ac9a5bb2a85c854d7fca50cc1d2a69c

SHA1
49d4c8eeb66764752b1c8c4f270dbdb04cb8093b

SHA256
71d1afc920d13aa6b0f74e75db8963b364fcdb77295974a74beabee098bdc58d

SHA512
edac2853c66a180ddded788f70d708c3c9a50ed56a6fb60cc96231a2e4116cca0f1dc5300179111358c64ff3a48de3d6d7b11820e53ec00fcbef3467a80ef5e9

Download Submit
memory/2280-0-0x0000000000310000-0x0000000000316000-memory.dmp

Filesize
24KB

Download
memory/2280-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2280-8-0x0000000000310000-0x0000000000316000-memory.dmp

Filesize
24KB

Download
memory/3020-23-0x00000000001C0000-0x00000000001C6000-memory.dmp

Filesize
24KB

Download