b8e9a5ba6358eb66b824f734188d30e9235284d3e9204d7137f26f50939d8f29

Analysis

max time kernel
149s
max time network
149s
platform
windows7_x64
resource
win7-20240220-en
resource tags

arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
submitted
11/03/2024, 05:53

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General

Target

2024-03-11_addeda45362c4f22412652147457b891_cryptolocker.exe
Size

47KB
MD5

addeda45362c4f22412652147457b891
SHA1

d15978fe498b61ddf7fce4aedb966052a551c626
SHA256

b8e9a5ba6358eb66b824f734188d30e9235284d3e9204d7137f26f50939d8f29
SHA512

fe02d97d80fb09881b6e4740efbb0c6efac26431b7e5d77e6bd9a57f30af25da3251c55da956b0d127942ee41f4d4bae1d439fe794225596fa0829d2e792c8f2
SSDEEP

768:Kf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGpebVIYLHA3KxP:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XC

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000e000000012253-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x000e000000012253-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2080	hurok.exe

Loads dropped DLL 1 IoCs

pid	Process
2072	2024-03-11_addeda45362c4f22412652147457b891_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
2072	2024-03-11_addeda45362c4f22412652147457b891_cryptolocker.exe
2080	hurok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2072 wrote to memory of 2080	2072	2024-03-11_addeda45362c4f22412652147457b891_cryptolocker.exe	28
PID 2072 wrote to memory of 2080	2072	2024-03-11_addeda45362c4f22412652147457b891_cryptolocker.exe	28
PID 2072 wrote to memory of 2080	2072	2024-03-11_addeda45362c4f22412652147457b891_cryptolocker.exe	28
PID 2072 wrote to memory of 2080	2072	2024-03-11_addeda45362c4f22412652147457b891_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-03-11_addeda45362c4f22412652147457b891_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-11_addeda45362c4f22412652147457b891_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2072
- 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:2080

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
47KB

MD5
3d6ce7b036305454dad8c8bd7f130947

SHA1
417916b7e729c1100a14065f0fde8a76e80ed7e7

SHA256
acb3a472fed3bf16ed82b0154c5c0b5cb35cda771163a9d637725d84791d394f

SHA512
4ded7586f75a09e1bae31e1e3f11dfe08f0599e34ab92e17a242e242e604abefe0336f0761e9077c0d30527cbd11ca35f3f4d78068cd1ba173c0d23a933c4d34

Download Submit
memory/2072-0-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2072-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2072-2-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2080-20-0x0000000000330000-0x0000000000336000-memory.dmp

Filesize
24KB

Download