Overview

overview

10

Static

static

6

rex.apk

android-9-x86

10

rex.apk

android-10-x64

10

rex.apk

android-11-x64

10

Analysis

  • max time kernel
    147s
  • max time network
    151s
  • 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
    01/04/2025, 07:27

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General

  • Target

    rex.apk

  • Size

    7.6MB

  • MD5

    6a519b85f738484f7a291fc4d5b6686f

  • SHA1

    92543b0cccf0c2d55ed80e625bfa74d8ee63930e

  • SHA256

    5561891445de7f5ac554e2e6d907aa894f216fcadbe15c6a38f1cece5ecd377c

  • SHA512

    65d784f58b7619dd699a4ad407aa03ddc48bd53cd9ee36df65186e56e67d76f379b121c1bc75f66e49ff61c41cf2783be655ce78d1e99a5267ca501395f4cce5

  • SSDEEP

    196608:AcaiXcKqcEcdEppfcVcgA0TIrsE+5zFKKpEC6iOcMdsl:haisI9d0UqgA0krs7T9/l

Score
10/10
copybarabankercollectioncredential_accessdefense_evasiondiscoveryevasioninfostealerpersistencetrojan

Malware Config

Signatures

  • Copybara

    Copybara is an Android banking trojan first seen in November 2021.

    bankertrojaninfostealercopybara
  • Copybara family
    copybara
  • Copybara payload 1 IoCs
  • Loads dropped Dex/Jar 1 TTPs 2 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.

    collectiondefense_evasioncredential_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
  • 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.

    defense_evasionpersistence
  • Performs UI accessibility actions on behalf of the user 1 TTPs 4 IoCs

    Application may abuse the accessibility service to prevent their removal.

    evasion
  • Queries information about the current Wi-Fi connection 1 TTPs 1 IoCs

    Application may abuse the framework's APIs to collect information about the current Wi-Fi connection.

    discovery
  • Queries the mobile country code (MCC) 1 TTPs 1 IoCs
    discovery
  • Requests disabling of battery optimizations (often used to enable hiding in the background). 1 TTPs 1 IoCs
    defense_evasion
  • Registers a broadcast receiver at runtime (usually for listening for system events) 1 TTPs 1 IoCs
    persistence
  • Checks CPU information 2 TTPs 1 IoCs
  • Checks memory information 2 TTPs 1 IoCs

Processes

  • com.tencent.mm
    1⤵
    • 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
    • Performs UI accessibility actions on behalf of the user
    • Queries information about the current Wi-Fi connection
    • 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)
    • Checks CPU information
    • Checks memory information
    PID:4312

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

Impair Defenses

1
T1629

Prevent Application Removal

1
T1629.001

Input Injection

1
T1516

Virtualization/Sandbox Evasion

2
T1633

System Checks

2
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

1
T1422

System Network Connections Discovery

1
T1421

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

Input Injection

1
T1516

Replay Monitor

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Downloads

  • /data/data/com.tencent.mm/app_mph_dex/apk.crazy-v1.AndroidManifest.xml
    Filesize

    9.0MB

    MD5

    e749ea3b2deac728d2b2781ee0ae2a53

    SHA1

    d053c42e6be484c7ca1ef5bc18bcf3ea2492a305

    SHA256

    9d5d7fbeb153f61245f72a755083e7bd75ce6bd024b418946dbcd54cb99bb612

    SHA512

    747b7fcdd64140ce902b74771bde156edec71a787007f9cf53323bb6b63ec7f8471272ca433ae4c5305e1e6268419c7203de8c6bfaaf258d756af9d20bb91631

    Download Submit

  • /data/data/com.tencent.mm/files/db.db
    Filesize

    12KB

    MD5

    256df4f1f534234b1d510cd7ccd71dab

    SHA1

    b7d93f7875c80eb6d55ca84ed3def780b6a84759

    SHA256

    8aad7daf3faa9bce66f44dabe11613afeb8731704e93112d890573b9d909d5e3

    SHA512

    3768be2a2f53ce428473f1d92c55342240994ad92fe6af315ba9322239a267fc059c7f0dd8f156c395dcfa5841c257c5158c7fabd28b6ef342fcc2e01b709ffc

    Download Submit

  • /data/data/com.tencent.mm/files/db.db
    Filesize

    4KB

    MD5

    24815b80325d6a52a5a4663ba1f85d21

    SHA1

    300b7ac83e8bda4225d5e4daa6bd0e7b640136ba

    SHA256

    e536c2307655f1145a41e3bdf9baa12c28d1aa4b189e4ab4d79a9d662fc9dee7

    SHA512

    ebed5cf3e67f53b8112ef0541f3110db3462d4684cf92ff7bfe5b232d53a9cab5b4a42d5d1591d66b9501d78f068c059ffadb42d9d0b58261fcb2bf585ade1e4

    Download Submit

  • /data/data/com.tencent.mm/files/db.db-journal
    Filesize

    4KB

    MD5

    4f0746d61cbb7ac74fbc59f2534bfee3

    SHA1

    e75e6117e4cd76bc71b2f42d42215519f59d893d

    SHA256

    7a28a5928460ca002b7bbf4b1f532667dc119f5b29d1d54167e51d078702d769

    SHA512

    768df1a3aab36d8ca8743b99316969c6980c80c641d08e5e40fa0230acbbf41df97398354e034e803e37b5849d19e14dcc88627dbffa383790ae479606979ef8

    Download Submit

  • /data/data/com.tencent.mm/files/db.db-shm
    Filesize

    32KB

    MD5

    bb7df04e1b0a2570657527a7e108ae23

    SHA1

    5188431849b4613152fd7bdba6a3ff0a4fd6424b

    SHA256

    c35020473aed1b4642cd726cad727b63fff2824ad68cedd7ffb73c7cbd890479

    SHA512

    768007e06b0cd9e62d50f458b9435c6dda0a6d272f0b15550f97c478394b743331c3a9c9236e09ab5b9cb3b423b2320a5d66eb3c7068db9ea37891ca40e47012

    Download Submit

  • /data/data/com.tencent.mm/files/loading.gif
    Filesize

    121KB

    MD5

    7b38720a0352dffa26411726c72dd2b0

    SHA1

    b15e687f42abcdc12427f146a3115ef2259211f8

    SHA256

    2013f490d45638cada331b3474ed65b9a43cec60da773accc98332e58c06336d

    SHA512

    0df28f87da4f9beb3ca8c108f54021a2a1a1434771abbb5ba67a2736097f2287b05e5220a33e92c42ee13ecae1144714a422b986763712794f69e65bc44c83e3

    Download Submit

  • /data/data/com.tencent.mm/files/txtscreensize.txt
    Filesize

    11B

    MD5

    1b65c10c6215685f9d621d797f911373

    SHA1

    cc50aaed5cd521a62ec8cf9fe0413153ec90f265

    SHA256

    2230c2b2787663a054c47450ecd1718f0296853ad768b8e5d306ecb912685e89

    SHA512

    5a9139f295dbe384b1584eff5c11f3f86759232f7b661b75f27fe92b996b4cdc0552e315f79b26f5f2c1f91756d9ae04cf0c3675b6172e91a3d373b9b314496f

    Download Submit