50dd3e4d1639431ccb6137eda55f64d4a7160c99af266425d015b8ad756b4cbb

Analysis

max time kernel
150s
max time network
155s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
05/04/2024, 14:57

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General

Target

2024-04-05_e009d72c973d76d77baf0182efd406cf_cryptolocker.exe
Size

66KB
MD5

e009d72c973d76d77baf0182efd406cf
SHA1

4fe6ac9a5650e642360f51b89b5498d82120935f
SHA256

50dd3e4d1639431ccb6137eda55f64d4a7160c99af266425d015b8ad756b4cbb
SHA512

c0f959f4b8041f65fe9d7f3b3d0863cfa04e822ff35358339417486c7f057284ea061bf5b88d69c8f5fe3aa38d6953ab3d081b22d9aab79bc14bfd3b8c05cee9
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszudnYTjipvF293vaRLt:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7k

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000c000000012329-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x000c000000012329-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
3056	hurok.exe

Loads dropped DLL 1 IoCs

pid	Process
1032	2024-04-05_e009d72c973d76d77baf0182efd406cf_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
1032	2024-04-05_e009d72c973d76d77baf0182efd406cf_cryptolocker.exe
3056	hurok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1032 wrote to memory of 3056	1032	2024-04-05_e009d72c973d76d77baf0182efd406cf_cryptolocker.exe	28
PID 1032 wrote to memory of 3056	1032	2024-04-05_e009d72c973d76d77baf0182efd406cf_cryptolocker.exe	28
PID 1032 wrote to memory of 3056	1032	2024-04-05_e009d72c973d76d77baf0182efd406cf_cryptolocker.exe	28
PID 1032 wrote to memory of 3056	1032	2024-04-05_e009d72c973d76d77baf0182efd406cf_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-05_e009d72c973d76d77baf0182efd406cf_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-05_e009d72c973d76d77baf0182efd406cf_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:1032
- 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:3056

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
16f9abf983e1701d497e1e892adefe39

SHA1
f9b989c13637da8bc709688930e4a6301a93abdb

SHA256
6fe3675613af2d33cb52b1a761cf9a4396aa2e2aca0670e9b835f79e192f498f

SHA512
1ec1d666e0b56edd1d04ca1dc40a66e75f019af3b05073465de122b0145fe6d61f4d9083205a8f179767e52bb1af603caee92f8ed188759dca8ab9231c6af812

Download Submit
memory/1032-0-0x0000000000330000-0x0000000000336000-memory.dmp

Filesize
24KB

Download
memory/1032-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/1032-3-0x0000000000330000-0x0000000000336000-memory.dmp

Filesize
24KB

Download
memory/3056-23-0x00000000002B0000-0x00000000002B6000-memory.dmp

Filesize
24KB

Download