8444aac3e26e2372b9395678fccd6edcd43afe13eb2dc16b4b6c2ae7491c4efe

Analysis

max time kernel
150s
max time network
153s
platform
windows7_x64
resource
win7-20240319-en
resource tags

arch:x64arch:x86image:win7-20240319-enlocale:en-usos:windows7-x64system
submitted
04-04-2024 22:35

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General

Target

2024-04-04_b6741746a8e1ddfcd73527c366089561_cryptolocker.exe
Size

66KB
MD5

b6741746a8e1ddfcd73527c366089561
SHA1

0831612caa518987331617bdf9c0a30330a81d66
SHA256

8444aac3e26e2372b9395678fccd6edcd43afe13eb2dc16b4b6c2ae7491c4efe
SHA512

a270b6e2210c019cc162463df1c5630b6341f20ee7dabb572832da0a0fa2af1fa5bb8c26e1047f61de68de739d3002a606a2374654ac1776e2774d591c996427
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszudnYTjipvF293vaRLEs:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7k

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000c0000000121c5-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x000c0000000121c5-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2400	hurok.exe

Loads dropped DLL 1 IoCs

pid	Process
2004	2024-04-04_b6741746a8e1ddfcd73527c366089561_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
2004	2024-04-04_b6741746a8e1ddfcd73527c366089561_cryptolocker.exe
2400	hurok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2004 wrote to memory of 2400	2004	2024-04-04_b6741746a8e1ddfcd73527c366089561_cryptolocker.exe	28
PID 2004 wrote to memory of 2400	2004	2024-04-04_b6741746a8e1ddfcd73527c366089561_cryptolocker.exe	28
PID 2004 wrote to memory of 2400	2004	2024-04-04_b6741746a8e1ddfcd73527c366089561_cryptolocker.exe	28
PID 2004 wrote to memory of 2400	2004	2024-04-04_b6741746a8e1ddfcd73527c366089561_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-04_b6741746a8e1ddfcd73527c366089561_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-04_b6741746a8e1ddfcd73527c366089561_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2004
- 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:2400

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
66KB

MD5
ce8fbba8df7129b962f08ab23a07b128

SHA1
3222574696d6159de0a48f5ebb6b52da7fb2772e

SHA256
cf07d29444a810f0866328bc85262951bac486e78fe6a47a35cd3ae81c5b9612

SHA512
0bcd01a0415416d948bdc5e5e83cd77c3526b89b8b9e712032e6b7a79f4149f5695f202f42649d0f1618b08f49cab0b55ec6b108b5e7624ff88d3ec661358f39

Download Submit
memory/2004-0-0x0000000000230000-0x0000000000236000-memory.dmp

Filesize
24KB

Download
memory/2004-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2004-1-0x0000000000230000-0x0000000000236000-memory.dmp

Filesize
24KB

Download
memory/2400-17-0x00000000001C0000-0x00000000001C6000-memory.dmp

Filesize
24KB

Download