Analysis

  • max time kernel
    146s
  • max time network
    151s
  • platform
    android_x86
  • resource
    android-x86-arm-20240221-en
  • resource tags

    androidarch:armarch:x86image:android-x86-arm-20240221-enlocale:en-usos:android-9-x86system
  • submitted
    24-02-2024 22:01

General

  • Target

    83c7f9550598273759d95f9ab17c002436a9c108ab0b7f8cce71f5d7d62f1494.apk

  • Size

    1.1MB

  • MD5

    62638544b5e77651354cdf2eedf222bb

  • SHA1

    11a63a8044fad493d91884d8a2babfef504d6230

  • SHA256

    83c7f9550598273759d95f9ab17c002436a9c108ab0b7f8cce71f5d7d62f1494

  • SHA512

    d3e10d0bde5f2cb149266045bc0debc8fa47fb0cf86164552e8432ff51f95dc7cb9b10d03fe4c21d43fef29927fb8b860ee1370298e607ab2ef112520853ce27

  • SSDEEP

    24576:I7MbnfpIbSSTU9T3gLoVAi6+7zHCTntfD4WR0:a+pIbb4bf0/0

Malware Config

Extracted

Family

ermac

C2

http://77.105.132.58:3434

AES_key
AES_key
AES_key
AES_key
AES_key
AES_key
AES_key
AES_key
AES_key
AES_key
AES_key

Signatures

  • Ermac

    An Android banking trojan first seen in July 2021.

  • Ermac2 payload 2 IoCs
  • Makes use of the framework's Accessibility service 2 TTPs 3 IoCs

    Retrieves information displayed on the phone screen using AccessibilityService.

  • Removes its main activity from the application launcher 2 IoCs
  • Loads dropped Dex/Jar 3 IoCs

    Runs executable file dropped to the device during analysis.

  • Acquires the wake lock 1 IoCs
  • Requests disabling of battery optimizations (often used to enable hiding in the background). 1 IoCs
  • Uses Crypto APIs (Might try to encrypt user data) 1 IoCs

Processes

  • com.naraxusuyewazeve.vixipi
    1⤵
    • Makes use of the framework's Accessibility service
    • Removes its main activity from the application launcher
    • Loads dropped Dex/Jar
    • Acquires the wake lock
    • Requests disabling of battery optimizations (often used to enable hiding in the background).
    • Uses Crypto APIs (Might try to encrypt user data)
    PID:4238
    • /system/bin/dex2oat --instruction-set=x86 --instruction-set-features=ssse3,-sse4.1,-sse4.2,-avx,-avx2,-popcnt --runtime-arg -Xhidden-api-checks --runtime-arg -Xrelocate --boot-image=/system/framework/boot.art --runtime-arg -Xms64m --runtime-arg -Xmx512m --instruction-set-variant=x86 --instruction-set-features=default --inline-max-code-units=0 --compact-dex-level=none --dex-file=/data/user/0/com.naraxusuyewazeve.vixipi/app_ded/S0woO6ydBnpioUEDUpfPHgxNADcTAHZa.dex --output-vdex-fd=42 --oat-fd=43 --oat-location=/data/user/0/com.naraxusuyewazeve.vixipi/app_ded/oat/x86/S0woO6ydBnpioUEDUpfPHgxNADcTAHZa.odex --compiler-filter=quicken --class-loader-context=&
      2⤵
      • Loads dropped Dex/Jar
      PID:4264

Network

MITRE ATT&CK Mobile v15

Replay Monitor

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Downloads

  • /data/data/com.naraxusuyewazeve.vixipi/app_ded/S0woO6ydBnpioUEDUpfPHgxNADcTAHZa.dex

    Filesize

    1.3MB

    MD5

    941985965631fb2d3297a776fdd31c1b

    SHA1

    5b56b5cbda4111da8cd5d3950c7968d61a6d7216

    SHA256

    a639cb1658b2c434ae64158d458ea0e59aa6df835418af1f3be261533cb057d1

    SHA512

    1e1050154fa725c9a6a80c6a4914a56b2d524934d232c108278a3d5e8a2f7ba02d013c8534541b5575870a8d0f1ef426e6dd378235f1fa712293514b9fcfccac

  • /data/user/0/com.naraxusuyewazeve.vixipi/app_ded/S0woO6ydBnpioUEDUpfPHgxNADcTAHZa.dex

    Filesize

    1.3MB

    MD5

    17dc733f911d76a23af267618d14baa5

    SHA1

    7859156e97790bfb0a0ddcffc53a8f0a4f5146fa

    SHA256

    da13d4121faf654a324b28aa0649253d9494b5f252008f5f354579eb1903093a

    SHA512

    a8bc2bf2da3f10adc4d2cee3558d9970e96089da02434642da55009f579746ba2fe7fc509bc278221d3e54affe0827cf2eef5015461bf4154b60c68d4840924d