2db6460ee24801426c49df8389e0c9293b2a76379da342dc5fddb214821ca45f

Analysis

max time kernel
150s
max time network
150s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
29/03/2024, 16:29

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General

Target

2024-03-29_0f816d2a93c1d764af092d716420a184_cryptolocker.exe
Size

49KB
MD5

0f816d2a93c1d764af092d716420a184
SHA1

f8b4dc1f835d7102e0dfa79a16795cb60d52a9d7
SHA256

2db6460ee24801426c49df8389e0c9293b2a76379da342dc5fddb214821ca45f
SHA512

3e8182f48c65ffdd4b796292024e988c38200b6430d239ae1f10c6308eec8c2196ee524ce35651360457457340e2dadc9a3586ea8557f90b3d4397e860cb1b6e
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszsbKY1xzpAIlea:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7s

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000a000000013a71-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x000a000000013a71-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2984	hurok.exe

Loads dropped DLL 1 IoCs

pid	Process
2784	2024-03-29_0f816d2a93c1d764af092d716420a184_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
2784	2024-03-29_0f816d2a93c1d764af092d716420a184_cryptolocker.exe
2984	hurok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2784 wrote to memory of 2984	2784	2024-03-29_0f816d2a93c1d764af092d716420a184_cryptolocker.exe	28
PID 2784 wrote to memory of 2984	2784	2024-03-29_0f816d2a93c1d764af092d716420a184_cryptolocker.exe	28
PID 2784 wrote to memory of 2984	2784	2024-03-29_0f816d2a93c1d764af092d716420a184_cryptolocker.exe	28
PID 2784 wrote to memory of 2984	2784	2024-03-29_0f816d2a93c1d764af092d716420a184_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-03-29_0f816d2a93c1d764af092d716420a184_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-29_0f816d2a93c1d764af092d716420a184_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2784
- 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:2984

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
4a8759cab1b77aff9ae8d39791fc9315

SHA1
07f756f44755a8e04f360a3ab6d938db8cfd45b8

SHA256
6e4397bc6d3f0d6148ec54ecc26d09f2d33f0729d0130cb3f2debc94aa95fc3a

SHA512
5699ebfed95330a791104d537225599c07a0506937d0f47bf59a419e1bb237ee44b00ead7ee6280404738dd0a8b52a6a7b1fe5e41543ba4e7a0e371825ca7cb6

Download Submit
memory/2784-0-0x0000000000230000-0x0000000000236000-memory.dmp

Filesize
24KB

Download
memory/2784-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2784-8-0x0000000000230000-0x0000000000236000-memory.dmp

Filesize
24KB

Download
memory/2984-18-0x00000000003B0000-0x00000000003B6000-memory.dmp

Filesize
24KB

Download