b6e321f47f0ed6be795a98093bc4bb2d1b431337b17c7df094489cf7d81a1bbc

Analysis

max time kernel
150s
max time network
153s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
01/02/2024, 09:49

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General

Target

2024-02-01_f5befe0866315ca590c8f065a5278dfb_cryptolocker.exe
Size

42KB
MD5

f5befe0866315ca590c8f065a5278dfb
SHA1

688a2fa6afdc698351dd64733ad296523668259e
SHA256

b6e321f47f0ed6be795a98093bc4bb2d1b431337b17c7df094489cf7d81a1bbc
SHA512

10f5ea640dfed6a0ed1c309f3ea3b4371c5722e1fb5f55a30be797a86113fc5e3f6981aea74aa6cb2e348c3aa708bb98c8813403af498edaf4be77a62445ec20
SSDEEP

768:Kf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGpebVIYLHA3Kxf:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XS

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x0008000000012255-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x0008000000012255-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2880	hurok.exe

Loads dropped DLL 1 IoCs

pid	Process
2256	2024-02-01_f5befe0866315ca590c8f065a5278dfb_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
2256	2024-02-01_f5befe0866315ca590c8f065a5278dfb_cryptolocker.exe
2880	hurok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2256 wrote to memory of 2880	2256	2024-02-01_f5befe0866315ca590c8f065a5278dfb_cryptolocker.exe	28
PID 2256 wrote to memory of 2880	2256	2024-02-01_f5befe0866315ca590c8f065a5278dfb_cryptolocker.exe	28
PID 2256 wrote to memory of 2880	2256	2024-02-01_f5befe0866315ca590c8f065a5278dfb_cryptolocker.exe	28
PID 2256 wrote to memory of 2880	2256	2024-02-01_f5befe0866315ca590c8f065a5278dfb_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-01_f5befe0866315ca590c8f065a5278dfb_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-01_f5befe0866315ca590c8f065a5278dfb_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2256
- 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:2880

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
c6135dcf790a555371d0e8a7f6edc5c6

SHA1
f84aa94a7a2bfb8e2f35615dbf4a403a8d5cbf20

SHA256
c474c6437fb4226884a19e4f86185d90a9ba96fe87141641566ec09af1761d81

SHA512
34f5359966116f52ee9bfa61481b9d17b5dad6a93b6cf1e3b95995d133cc44c7435bc39af1cab8501af7c9627d9ddc00f31596b477be0de449116bb81468b7ea

Download Submit
memory/2256-0-0x00000000003A0000-0x00000000003A6000-memory.dmp

Filesize
24KB

Download
memory/2256-2-0x00000000003A0000-0x00000000003A6000-memory.dmp

Filesize
24KB

Download
memory/2256-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2880-18-0x0000000000230000-0x0000000000236000-memory.dmp

Filesize
24KB

Download