677c560492536626650b8c2dd9dbb72d4cff1ee6dfe43f673fc1c6424d8c85da

Analysis

max time kernel
150s
max time network
150s
platform
windows7_x64
resource
win7-20240419-en
resource tags

arch:x64arch:x86image:win7-20240419-enlocale:en-usos:windows7-x64system
submitted
08-06-2024 00:49

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General

Target

2024-06-08_4ae636c761d5c7f279ba6421c0da37d4_cryptolocker.exe
Size

55KB
MD5

4ae636c761d5c7f279ba6421c0da37d4
SHA1

cc094e7ccb3028a38e2c4faa014c262adb65c9b6
SHA256

677c560492536626650b8c2dd9dbb72d4cff1ee6dfe43f673fc1c6424d8c85da
SHA512

dffb55563eeee2772d5cc2589ec431a4a58e3e734a98e46b0b358cb47efd16b632f8e643d52b516010d101a3ee5991e9de7372123f9a128f87190902f0ecfbba
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszsbKY1xzpAIX6E7:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7O

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000c000000012279-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x000c000000012279-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
3048	hurok.exe

Loads dropped DLL 1 IoCs

pid	Process
2460	2024-06-08_4ae636c761d5c7f279ba6421c0da37d4_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
2460	2024-06-08_4ae636c761d5c7f279ba6421c0da37d4_cryptolocker.exe
3048	hurok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2460 wrote to memory of 3048	2460	2024-06-08_4ae636c761d5c7f279ba6421c0da37d4_cryptolocker.exe	28
PID 2460 wrote to memory of 3048	2460	2024-06-08_4ae636c761d5c7f279ba6421c0da37d4_cryptolocker.exe	28
PID 2460 wrote to memory of 3048	2460	2024-06-08_4ae636c761d5c7f279ba6421c0da37d4_cryptolocker.exe	28
PID 2460 wrote to memory of 3048	2460	2024-06-08_4ae636c761d5c7f279ba6421c0da37d4_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-06-08_4ae636c761d5c7f279ba6421c0da37d4_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-08_4ae636c761d5c7f279ba6421c0da37d4_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2460
- 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:3048

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
55KB

MD5
96b06633d8ab10048093f8f25e3db040

SHA1
1f3c06b42da3a464a7c275bc73fa66638cc78ec3

SHA256
a1fe04e7174e926d4935d149ff1774906b37afb09fba8813b590b86737f6fc9a

SHA512
84ed9c5151edc594e87383eeab961fd87654c83c1d9b2d86405eac54cd1f0a2c593c161b20c9b1f18f0227c8009dd722b1039f21667653d44e015f62d16db766

Download Submit
memory/2460-0-0x0000000000310000-0x0000000000316000-memory.dmp

Filesize
24KB

Download
memory/2460-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2460-8-0x0000000000310000-0x0000000000316000-memory.dmp

Filesize
24KB

Download