2f7b4c47477b01776fdc86aed4ffb7a0b0ad35ed9dcb96e73c044dfbab2f918f

Analysis

max time kernel
150s
max time network
153s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
07/03/2024, 00:56

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General

Target

2024-03-07_a2c4cfe593ae221aa9375a5a8d553802_cryptolocker.exe
Size

49KB
MD5

a2c4cfe593ae221aa9375a5a8d553802
SHA1

b43d2ae47e95c6900dc741e021eb221d2b8c3d26
SHA256

2f7b4c47477b01776fdc86aed4ffb7a0b0ad35ed9dcb96e73c044dfbab2f918f
SHA512

2087227d6c8201e27abb231cfb11da4d071cbaa187a2db80ffcfbe053fb60de820221412e539ecd89bb9e5c8478d805ab2b317374b4f77cb313480303a9986c5
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszsbKY1xzpAIBm:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7P

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000900000001223f-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x000900000001223f-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2936	hurok.exe

Loads dropped DLL 1 IoCs

pid	Process
1996	2024-03-07_a2c4cfe593ae221aa9375a5a8d553802_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
1996	2024-03-07_a2c4cfe593ae221aa9375a5a8d553802_cryptolocker.exe
2936	hurok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1996 wrote to memory of 2936	1996	2024-03-07_a2c4cfe593ae221aa9375a5a8d553802_cryptolocker.exe	28
PID 1996 wrote to memory of 2936	1996	2024-03-07_a2c4cfe593ae221aa9375a5a8d553802_cryptolocker.exe	28
PID 1996 wrote to memory of 2936	1996	2024-03-07_a2c4cfe593ae221aa9375a5a8d553802_cryptolocker.exe	28
PID 1996 wrote to memory of 2936	1996	2024-03-07_a2c4cfe593ae221aa9375a5a8d553802_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-03-07_a2c4cfe593ae221aa9375a5a8d553802_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-07_a2c4cfe593ae221aa9375a5a8d553802_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:1996
- 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:2936

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
50KB

MD5
b76dcd3585902db31033f020761143c8

SHA1
fd5712b418999b3c8a4827ce27ab2e57011aa71f

SHA256
0a7a1dcf1ec42ebda68a32cfde227682f0609696c4ca72d87cc964c0cd861f8a

SHA512
e9cb7fbc0590f6c3cf9ce314bef5f2c4927de7792272da70efef04fc8b6f57300a3b641d76bfe906364973f3ba4246d37d7e06b58b1d1db68385ff05f2157dab

Download Submit
memory/1996-0-0x00000000001C0000-0x00000000001C6000-memory.dmp

Filesize
24KB

Download
memory/1996-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/1996-3-0x00000000001C0000-0x00000000001C6000-memory.dmp

Filesize
24KB

Download