7f8dab3d4fd41b6846aceb02ccd080ef28e1a44c5002f4f676d0151b2b19502a

Analysis

max time kernel
148s
max time network
152s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
19/03/2024, 14:37

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General

Target

2024-03-19_61d953abbee258995323a867a8e4e607_cryptolocker.exe
Size

42KB
MD5

61d953abbee258995323a867a8e4e607
SHA1

217848b9b20f2034e937ae57d1ff6a826ad809cd
SHA256

7f8dab3d4fd41b6846aceb02ccd080ef28e1a44c5002f4f676d0151b2b19502a
SHA512

b2bd271c3b8224b7aabf044fa51a9d7772c2890ece88ee972d4d3dad022bf31ec8357bc4635260f5c255e6617b9c2c0eb9ac2b12627498db93c5632bf952dfbc
SSDEEP

768:Kf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGpebVIYLHA3KxU:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XV

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x0009000000012251-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x0009000000012251-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2536	hurok.exe

Loads dropped DLL 1 IoCs

pid	Process
1612	2024-03-19_61d953abbee258995323a867a8e4e607_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
1612	2024-03-19_61d953abbee258995323a867a8e4e607_cryptolocker.exe
2536	hurok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1612 wrote to memory of 2536	1612	2024-03-19_61d953abbee258995323a867a8e4e607_cryptolocker.exe	28
PID 1612 wrote to memory of 2536	1612	2024-03-19_61d953abbee258995323a867a8e4e607_cryptolocker.exe	28
PID 1612 wrote to memory of 2536	1612	2024-03-19_61d953abbee258995323a867a8e4e607_cryptolocker.exe	28
PID 1612 wrote to memory of 2536	1612	2024-03-19_61d953abbee258995323a867a8e4e607_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-03-19_61d953abbee258995323a867a8e4e607_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-19_61d953abbee258995323a867a8e4e607_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:1612
- 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:2536

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
42KB

MD5
c8223928f4e3e5b7a0c8f8465baf60a8

SHA1
76cc86835218f3067348a98ade91d209e8fcb3d1

SHA256
5f62a6d034cfa3beed05ce6723629841c02b97c3511ff7c610379f671a5cc7d1

SHA512
7937552ee94af92f270365903a555c29781b865bb30d30d367291ff28b8d7a1f3f6556d8abf87c2326fb2afa01bb24c270131cc1abbd8b4898bd61f37fb8c6c8

Download Submit
memory/1612-0-0x00000000001C0000-0x00000000001C6000-memory.dmp

Filesize
24KB

Download
memory/1612-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/1612-3-0x00000000001C0000-0x00000000001C6000-memory.dmp

Filesize
24KB

Download