Overview

overview

10

Static

static

10

e4287e9708...in.exe

windows7_x64

10

e4287e9708...in.exe

windows10_x64

10

Analysis

  • max time kernel
    118s
  • max time network
    120s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    25-11-2020 00:50

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General

  • Target

    e4287e9708a73ce6a9b7a3e7c72462b01f7cc3c595d972cf2984185ac1a3a4a8.bin.exe

  • Size

    500KB

  • MD5

    eec3730b2b99f6fb23134d79681f5122

  • SHA1

    425209b891142704462baf14048d0dd59d0c7561

  • SHA256

    e4287e9708a73ce6a9b7a3e7c72462b01f7cc3c595d972cf2984185ac1a3a4a8

  • SHA512

    420edeba0c699d8b04bf57300883a7e48e72a008484fe05453ef1b0edc14d8e97a1a15727f8de3e93ef16bf5472b91008a44a33ce0932ad4aeca21da8a90ffa0

Score
10/10
mespinozaransomwarespywarestealer

Malware Config

Signatures

  • Mespinoza Ransomware 2 TTPs

    Also known as Pysa. Ransomware-as-a-servoce which first appeared in 2020.

    ransomwaremespinoza
  • Modifies extensions of user files 4 IoCs

    Ransomware generally changes the extension on encrypted files.

    ransomware
  • Deletes itself 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

    spywarestealer
  • Drops file in Program Files directory 64 IoCs
  • Drops file in Windows directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Suspicious use of WriteProcessMemory 7 IoCs
  • System policy modification 1 TTPs 2 IoCs
    evasion

Processes

  • C:\Users\Admin\AppData\Local\Temp\e4287e9708a73ce6a9b7a3e7c72462b01f7cc3c595d972cf2984185ac1a3a4a8.bin.exe
    "C:\Users\Admin\AppData\Local\Temp\e4287e9708a73ce6a9b7a3e7c72462b01f7cc3c595d972cf2984185ac1a3a4a8.bin.exe"
    1⤵
    • Modifies extensions of user files
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Suspicious use of WriteProcessMemory
    • System policy modification
    PID:760
    • C:\Windows\SysWOW64\cmd.exe
      cmd /c ""C:\Users\Admin\AppData\Local\Temp\update.bat" "
      2⤵
      • Deletes itself
      PID:1616

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

1
T1112

Credential Access

Credentials in Files

1
T1081

Discovery

Query Registry

1
T1012

System Information Discovery

1
T1082

Lateral Movement

Collection

Data from Local System

1
T1005

Exfiltration

Command and Control

Impact

Data Encrypted for Impact

1
T1486

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\update.bat
    MD5

    f7a5e2f6234c33e6ffb207fc04014f5d

    SHA1

    eb2597cdcd1512ff68c35e313c28fa06c584aaf2

    SHA256

    f37edd032ecefa3a1f3bdbb9dec513d4ff749f18a5d6c74fa936ca391736323b

    SHA512

    661318842aecf20ae87dfdc479b8a74ecc3fe5e2361307237dd255329e8a313040aadc3294676ddf3e533dea4ccf0b4f01f0f2fa902557d39b98b880365e850b

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  • memory/1616-0-0x0000000000000000-mapping.dmp
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