Overview

overview

10

Static

static

6

02a7b6c674...1b.apk

android-9-x86

10

base.apk

android-9-x86

10

Analysis

  • max time kernel
    18s
  • max time network
    38s
  • platform
    android-9_x86
  • resource
    android-x86-arm-20240910-en
  • resource tags

    arch:armarch:x86image:android-x86-arm-20240910-enlocale:en-usos:android-9-x86system
  • submitted
    16-12-2024 02:59

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General

  • Target

    base.apk

  • Size

    8.4MB

  • MD5

    fb1ba100e4f57daec89c73b22233d569

  • SHA1

    a42efe6a797ec95c815f3822d1e4ec16306df6af

  • SHA256

    c5ab9a0327ac718c196f0fb3709fd6fbeaad327bb5bf1685174f54acbeb79dcf

  • SHA512

    e3a07f378c76628eb8c103f154264b023c48530ae36d8c13faa0995581ea2605540e315496ae4c0898a11e7f24ea5aa25a5c63371e411ffdd0a0ad92aac8088e

  • SSDEEP

    98304:W3G/AJgoTVK2i0aj7+5iSRGAkRsgMj3j1dc961b0mH5Zn:MGAJgoTUV5j7+r+Rxy3T66175

Score
10/10
octobankercollectioncredential_accessdiscoveryevasionimpactinfostealerpersistencerattrojan

Malware Config

Extracted

Family

octo

AES_key
AES_key

Signatures

  • Octo

    Octo is a banking malware with remote access capabilities first seen in April 2022.

    bankertrojaninfostealerratocto
  • Octo family
    octo
  • Octo payload 1 IoCs
  • Checks Android system properties for emulator presence. 1 TTPs 1 IoCs
    evasion
  • Loads dropped Dex/Jar 1 TTPs 3 IoCs

    Runs executable file dropped to the device during analysis.

    evasion
  • Makes use of the framework's Accessibility service 4 TTPs 2 IoCs

    Retrieves information displayed on the phone screen using AccessibilityService.

    collectionevasioncredential_access
  • Queries a list of all the installed applications on the device (Might be used in an attempt to overlay legitimate apps) 1 TTPs
    bankerdiscovery
  • Queries the phone number (MSISDN for GSM devices) 1 TTPs
    discovery
  • Acquires the wake lock 1 IoCs
  • Makes use of the framework's foreground persistence service 1 TTPs 1 IoCs

    Application may abuse the framework's foreground service to continue running in the foreground.

    evasionpersistence
  • Queries the mobile country code (MCC) 1 TTPs 1 IoCs
    discovery
  • Queries the unique device ID (IMEI, MEID, IMSI) 1 TTPs
    discovery
  • Reads information about phone network operator. 1 TTPs
    discovery
  • Requests disabling of battery optimizations (often used to enable hiding in the background). 1 TTPs 1 IoCs
    evasion
  • Registers a broadcast receiver at runtime (usually for listening for system events) 1 TTPs 1 IoCs
    persistence
  • Uses Crypto APIs (Might try to encrypt user data) 1 TTPs 1 IoCs
    impact
  • Checks CPU information 2 TTPs 1 IoCs
  • Checks memory information 2 TTPs 1 IoCs

Processes

  • com.nexplorer1virtualcontacts
    1⤵
    • Checks Android system properties for emulator presence.
    • Loads dropped Dex/Jar
    • Makes use of the framework's Accessibility service
    • Acquires the wake lock
    • Makes use of the framework's foreground persistence service
    • Queries the mobile country code (MCC)
    • Requests disabling of battery optimizations (often used to enable hiding in the background).
    • Registers a broadcast receiver at runtime (usually for listening for system events)
    • Uses Crypto APIs (Might try to encrypt user data)
    • Checks CPU information
    • Checks memory information
    PID:4402
    • /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.nexplorer1virtualcontacts/app_miss/df.json --output-vdex-fd=41 --oat-fd=42 --oat-location=/data/user/0/com.nexplorer1virtualcontacts/app_miss/oat/x86/df.odex --compiler-filter=quicken --class-loader-context=&
      2⤵
      • Loads dropped Dex/Jar
      PID:4427

Network

MITRE ATT&CK Mobile v15

Initial Access

Execution

Persistence

Event Triggered Execution

1
T1624

Broadcast Receivers

1
T1624.001

Foreground Persistence

1
T1541

Privilege Escalation

Defense Evasion

Download New Code at Runtime

1
T1407

Foreground Persistence

1
T1541

Hide Artifacts

1
T1628

User Evasion

1
T1628.002

Input Injection

1
T1516

Virtualization/Sandbox Evasion

3
T1633

System Checks

3
T1633.001

Credential Access

Input Capture

2
T1417

GUI Input Capture

1
T1417.002

Keylogging

1
T1417.001

Discovery

Software Discovery

1
T1418

Security Software Discovery

1
T1418.001

System Information Discovery

2
T1426

System Network Configuration Discovery

4
T1422

Lateral Movement

Collection

Input Capture

2
T1417

GUI Input Capture

1
T1417.002

Keylogging

1
T1417.001

Screen Capture

1
T1513

Command and Control

Exfiltration

Impact

Data Encrypted for Impact

1
T1471

Input Injection

1
T1516

Replay Monitor

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Downloads

  • /data/data/com.nexplorer1virtualcontacts/.global.com.nexplorer1virtualcontacts
    Filesize

    48B

    MD5

    046a414913add6f5bb60072c7db819b6

    SHA1

    451ee4f6809260aec622d772fd329c7d0297a842

    SHA256

    b66c1320cb063a1d391c94273572ea6edae76c8c8b0a07f8d75c88686f0df72a

    SHA512

    4e6355f3051ed5e811ab030abde1f5be7f5e1cf33be99cd08477e9b6c015deb1d8bd75a09fb9c7176b8511c5ad0a67abc0902a3531e97564ccb6afc57496a47c

    Download Submit

  • /data/data/com.nexplorer1virtualcontacts/app_miss/df.json
    Filesize

    1019B

    MD5

    7d5665590f120ff36fb60655f8830b6d

    SHA1

    072a2e08d21c4ee14d6a40c23e1a9ee22aab8519

    SHA256

    265322f338d411e43330986a965c99cad3f750216ae49a010eeae8780913b47f

    SHA512

    21e37553dfb80dd3fbe30fe53d0eb185cbfb394683ff4757ef122eb3ec5232f3c42e2da738d5166cfcb7a7d113acf4470a8427ecd417cf57ba9901cb816c13a8

    Download Submit

  • /data/data/com.nexplorer1virtualcontacts/app_miss/df.json
    Filesize

    1019B

    MD5

    82e2a576d733f98ad5c9af06c0565ef3

    SHA1

    33f03ebb438ffcf7cc85e8bbdb5dc7d94a388d4e

    SHA256

    972271df3c2cfeedbccbd04ad1fa2bde58303894f3b55ecb838106ae968ca390

    SHA512

    5093ef745fba22f70dc3f8814101eaa1f1f69a6a0427e3d1ec39b73144371814e629aa8d8c6b7664e99d69d922c272563d08cf83fdd2ee35eae0801544e5b845

    Download Submit

  • /data/data/com.nexplorer1virtualcontacts/files/.y
    Filesize

    307KB

    MD5

    4e73947cabb5db3f92ca85004981b754

    SHA1

    6d9667fdb0280ed2dcb782b4683e422a51bdc601

    SHA256

    6db94232e756b90ed437f1bc87dc38cf20fb2e7c7a19a5e40c6c17254b7e234c

    SHA512

    be8b500a7070af1dfb53b0cf1a7b327dadc4e163a6dad905496ac228c58cd1ed87b054533917924455d35e9b300683ae33e1bcdd91935a5dbae1d693c3e13d69

    Download Submit

  • /data/user/0/com.nexplorer1virtualcontacts/app_miss/df.json
    Filesize

    1KB

    MD5

    f53cd6fbf78380de17b9094b22063493

    SHA1

    57abeb0b58908661231b69e9dab84a51c2cfc8cf

    SHA256

    bb8ccea2b9e7bca3a13cb8173513779ef86652ea32151dec0c29f5e8879ef946

    SHA512

    9687a1dab58936c3af840f16bdc47d40faed2e8e58e9a013e09df6d5b33fca4b49361559f8a1a5d19403cf08d8f9cf5f35994d3889cc563b8fe15785a7602a18

    Download Submit

  • /data/user/0/com.nexplorer1virtualcontacts/app_miss/df.json
    Filesize

    1KB

    MD5

    78196e3ab86705d8577301b21d8ed684

    SHA1

    dd826107946738f9f43812435376c1c7d7a417f1

    SHA256

    547ccd52655902ce0fa1a96e82d71484480ad8ba79a99f4ec078244786bc139a

    SHA512

    567fa802e2c931670a39c04ed7b5f8b9a95901fe18d30a6ca7f435fa99b2ce09bd8919198be256e7732119e5029afede310adff80d26f3030769e1cd528fdc55

    Download Submit

  • Anonymous-DexFile@0xd40f8000-0xd417babc
    Filesize

    526KB

    MD5

    45c37768db32e13da8f70a249806d76b

    SHA1

    b7f02f5d8b1446857dc049cf6e66c504146e017f

    SHA256

    ace33f0067a81ffd518f63074ef3579da40c42fb040dcc6104753c4fb77b87f1

    SHA512

    b4fa54afe6e2be2cd0405792e0bcf8fea5cd65e041a414ba8ab0f75a1f0c665acfb195af8619fba937d0b38d685c4fa474af73092030854a9caf033ce37634ce

    Download Submit