295b55312853a88ae0fea4f507012d43c5a391b0467e5e7acc64a4262c0b4243

Analysis

max time kernel
150s
max time network
155s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
12-05-2024 14:58

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-05-12_fcb260ba297266999d70791abf704168_cryptolocker.exe
Size

30KB
MD5

fcb260ba297266999d70791abf704168
SHA1

9e266611f92ede22320232dae0ec500698af1f92
SHA256

295b55312853a88ae0fea4f507012d43c5a391b0467e5e7acc64a4262c0b4243
SHA512

e4dd274c49ebfb772fcafe8fcc0b1ea59c691049e4891eeb8b377d7816a45a32f44c7718663b00dff1dd0d3690d7b67edf681218b534e9048f357b62d291a884
SSDEEP

768:Kf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGbNAKSjNfE:o1KhxqwtdgI2MyzNORQtOflIwoHNV2X5

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000d00000001226c-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x000d00000001226c-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2092	hurok.exe

Loads dropped DLL 1 IoCs

pid	Process
2108	2024-05-12_fcb260ba297266999d70791abf704168_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
2108	2024-05-12_fcb260ba297266999d70791abf704168_cryptolocker.exe
2092	hurok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2108 wrote to memory of 2092	2108	2024-05-12_fcb260ba297266999d70791abf704168_cryptolocker.exe	28
PID 2108 wrote to memory of 2092	2108	2024-05-12_fcb260ba297266999d70791abf704168_cryptolocker.exe	28
PID 2108 wrote to memory of 2092	2108	2024-05-12_fcb260ba297266999d70791abf704168_cryptolocker.exe	28
PID 2108 wrote to memory of 2092	2108	2024-05-12_fcb260ba297266999d70791abf704168_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-12_fcb260ba297266999d70791abf704168_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-12_fcb260ba297266999d70791abf704168_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2108
- 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:2092

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

Loading Replay Monitor...

Downloads

\Users\Admin\AppData\Local\Temp\hurok.exe

Filesize
30KB

MD5
81ccfc56af7eb72a96db4a0c1b692e1e

SHA1
7a9b6bb01f849565d2656f0eb850292cc09b95a4

SHA256
ff575bc2be61b9be5a8cc457cb7d92580d1f0ffc7eb774e5ebbfc8fb38bbb938

SHA512
ff958d4e457065fde94358e9896d6ff05d76d27d3081b96f8e6d2aa35c9cf9a94674dfab3ca41975377a5cc324621fabd5963d2617f630df4c093599c54f6c80

Download Submit
memory/2092-23-0x00000000001C0000-0x00000000001C6000-memory.dmp

Filesize
24KB

Download
memory/2108-0-0x00000000002B0000-0x00000000002B6000-memory.dmp

Filesize
24KB

Download
memory/2108-1-0x00000000002B0000-0x00000000002B6000-memory.dmp

Filesize
24KB

Download
memory/2108-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download