Malware Analysis Report

2024-09-09 17:38

Sample ID 240614-jn2fcs1cka
Target a89989c1ffda36014a4a4136590f5fac_JaffaCakes118
SHA256 fea7dbb975b5ece13f83c93fb50f87c1aa0fe843d095a134fb4b46876804c3ba
Tags
discovery evasion impact persistence
score
8/10

Table of Contents

Analysis Overview

MITRE ATT&CK Matrix

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
8/10

SHA256

fea7dbb975b5ece13f83c93fb50f87c1aa0fe843d095a134fb4b46876804c3ba

Threat Level: Likely malicious

The file a89989c1ffda36014a4a4136590f5fac_JaffaCakes118 was found to be: Likely malicious.

Malicious Activity Summary

discovery evasion impact persistence

Checks if the Android device is rooted.

Queries information about running processes on the device

Requests dangerous framework permissions

Queries information about active data network

Queries information about the current Wi-Fi connection

Listens for changes in the sensor environment (might be used to detect emulation)

Registers a broadcast receiver at runtime (usually for listening for system events)

Uses Crypto APIs (Might try to encrypt user data)

Checks CPU information

MITRE ATT&CK Matrix

N/A

Analysis: static1

Detonation Overview

Reported

2024-06-14 07:49

Signatures

Requests dangerous framework permissions

Description Indicator Process Target
Allows read only access to phone state, including the current cellular network information, the status of any ongoing calls, and a list of any PhoneAccounts registered on the device. android.permission.READ_PHONE_STATE N/A N/A
Allows an application to see the number being dialed during an outgoing call with the option to redirect the call to a different number or abort the call altogether. android.permission.PROCESS_OUTGOING_CALLS N/A N/A
Allows an application to read or write the system settings. android.permission.WRITE_SETTINGS N/A N/A
Allows an app to create windows using the type LayoutParams.TYPE_APPLICATION_OVERLAY, shown on top of all other apps. android.permission.SYSTEM_ALERT_WINDOW N/A N/A
Allows an application to write to external storage. android.permission.WRITE_EXTERNAL_STORAGE N/A N/A
Allows an application to read from external storage. android.permission.READ_EXTERNAL_STORAGE N/A N/A
Allows an application to send SMS messages. android.permission.SEND_SMS N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-14 07:49

Reported

2024-06-14 07:52

Platform

android-x86-arm-20240611.1-en

Max time kernel

14s

Max time network

130s

Command Line

com.unlimit.ulreader

Signatures

Checks if the Android device is rooted.

evasion
Description Indicator Process Target
N/A /system/app/Superuser.apk N/A N/A

Queries information about running processes on the device

discovery
Description Indicator Process Target
Framework service call android.app.IActivityManager.getRunningAppProcesses N/A N/A

Queries information about active data network

discovery
Description Indicator Process Target
Framework service call android.net.IConnectivityManager.getActiveNetworkInfo N/A N/A

Queries information about the current Wi-Fi connection

discovery
Description Indicator Process Target
Framework service call android.net.wifi.IWifiManager.getConnectionInfo N/A N/A

Listens for changes in the sensor environment (might be used to detect emulation)

evasion
Description Indicator Process Target
Framework API call android.hardware.SensorManager.registerListener N/A N/A

Registers a broadcast receiver at runtime (usually for listening for system events)

persistence
Description Indicator Process Target
Framework service call android.app.IActivityManager.registerReceiver N/A N/A

Uses Crypto APIs (Might try to encrypt user data)

impact
Description Indicator Process Target
Framework API call javax.crypto.Cipher.doFinal N/A N/A

Checks CPU information

Description Indicator Process Target
File opened for read /proc/cpuinfo N/A N/A

Processes

com.unlimit.ulreader

Network

Country Destination Domain Proto
GB 142.250.187.234:443 tcp
N/A 224.0.0.251:5353 udp
GB 163.171.129.134:80 www.ip138.com tcp
US 1.1.1.1:53 udp
GB 43.132.64.188:80 servicecdn.andreader.com tcp
US 1.1.1.1:53 udp
HK 43.135.106.184:80 cfg.imtt.qq.com tcp
CN 36.156.202.75:443 plbslog.umeng.com tcp
HK 43.135.106.184:80 cfg.imtt.qq.com tcp
US 1.1.1.1:53 servicecdn udp
GB 216.58.204.78:443 tcp
US 1.1.1.1:53 android.apis.google.com udp
GB 142.250.187.238:443 android.apis.google.com tcp

Files

/data/data/com.unlimit.ulreader/files/umexecption.json

MD5 d751713988987e9331980363e24189ce
SHA1 97d170e1550eee4afc0af065b78cda302a97674c
SHA256 4f53cda18c2baa0c0354bb5f9a3ecbe5ed12ab4d8e11ba873c2f11161202b945
SHA512 b25b294cb4deb69ea00a4c3cf3113904801b6015e5956bd019a8570b1fe1d6040e944ef3cdee16d0a46503ca6e659a25f21cf9ceddc13f352a3c98138c15d6af

/storage/emulated/0/.tIdConf/.init_34.cfg

MD5 1100e841d23aef96b20e63add23633b3
SHA1 a8436079d61854f21de3dc072f4c87df8a20dc03
SHA256 cde42bd4fd0767d532fa30c193cfca5e7c6c6eeafd2c0b530057ae1391f2f57a
SHA512 aa43fc2c923818d9eadb056c03bd50a1b80616471929dbd16f5f7aa4b820a108fbbc38e5392dd5d311b2417562ebf895e9ee3e873d3a43275c47de8b88bc53ac

/data/data/com.unlimit.ulreader/databases/E-ZINE-journal

MD5 b0f94e29ee15a579398df2afaaa5ab20
SHA1 72a2e5e390bd5ce50c425a0333cf9ec884de9c2e
SHA256 55282e5548062e930b2e3254b4848ebac2f66472a29c090f1e221643a3ff6b1a
SHA512 e528567c4866d0d951855c8c1bdebc2d769c31ade0fbbd11ff711cec0eab1a0547c858f8b0f14e5bf0a7685326419c6f06ca90f402ded89da66a6c0e462650f1

/data/data/com.unlimit.ulreader/databases/E-ZINE

MD5 f2b4b0190b9f384ca885f0c8c9b14700
SHA1 934ff2646757b5b6e7f20f6a0aa76c7f995d9361
SHA256 0a8ffb6b327963558716e87db8946016d143e39f895fa1b43e95ba7032ce2514
SHA512 ec12685fc0d60526eed4d38820aad95611f3e93ae372be5a57142d8e8a1ba17e6e5dfe381a4e1365dddc0b363c9c40daaffdc1245bd515fddac69bf1abacd7f1

/data/data/com.unlimit.ulreader/databases/E-ZINE-shm

MD5 bb7df04e1b0a2570657527a7e108ae23
SHA1 5188431849b4613152fd7bdba6a3ff0a4fd6424b
SHA256 c35020473aed1b4642cd726cad727b63fff2824ad68cedd7ffb73c7cbd890479
SHA512 768007e06b0cd9e62d50f458b9435c6dda0a6d272f0b15550f97c478394b743331c3a9c9236e09ab5b9cb3b423b2320a5d66eb3c7068db9ea37891ca40e47012

/data/data/com.unlimit.ulreader/databases/E-ZINE-wal

MD5 4ef9731ec5095a681466d850e54dc105
SHA1 f842d30959ffb7a15f6bdbf5ded04b7617faa5b7
SHA256 ccd45a1cdb508380d5b3a6352033219c771aca70cac0e456605afc1ff233e93f
SHA512 2a763e08dfc09d3a1d986914a07075d8285008aaadf990f4d30fce4d1ea364ed0163c19b48b15a74e25b2a2569e40aaac9f9f596a5b8807058efe88313824e3c

/storage/emulated/0/Android/data/com.unlimit.ulreader/files/tbslog/tbslog.txt

MD5 c17a55a345db817ba45b88ab42245b24
SHA1 95164438e0bf11e0a44d68d7ecce626047d6ddf6
SHA256 f94ee9bec337821579fe0f39379d92d47ddc1a26094766adf374ebadf622904a
SHA512 db539a49e8f7f12f0a7e7ed8cbb9a2f9328437ef378cfd3096765879d38c3ffb099ee0ce3e7d5ec66ede1356c011b7592d8b0d007e4c389c14987022f4697a79

/data/data/com.unlimit.ulreader/databases/userSessionInfoDB-journal

MD5 cb73b5b127bdfcd48d75ed888e85f9da
SHA1 3e9deef9549d1a970ca591b4620c0fd423f359c6
SHA256 b146afbc3a935c2e7d5e73c7402607f6382bbf6944a10cb8f747e3f19ecfc069
SHA512 a9546e803772f707375c0d612c630bb18da64c9a9fe6379dbdb961ad001eb8bd6e1fe06a7caab8a043aa8f4098cafb32755ab881ed149b3d268235ee17df1e5d

/data/data/com.unlimit.ulreader/databases/userSessionInfoDB-wal

MD5 c4ecb7a17631f3e4751e0a887e238f48
SHA1 9cd33210c3bb54e0f9548a7d3f217245a3e558cf
SHA256 982761b79bfd9ae184dbf651c693fabed41f33df43378600322fe6a8b174ee2e
SHA512 de52b30bc50cf302098862f1f9b4a317132e08a0e95fea5d801b939c516542d930268eacc6ae8f472bfc5e7432939e2107fc5d9f24bd764bcf7ac922c69f408b

/data/data/com.unlimit.ulreader/files/umeng_it.cache

MD5 570ebf53c6ce7bdbe13553a52a1e31ba
SHA1 b3e0821b1da804432c9569c83e58166d6c0517ea
SHA256 6771be253ffd717ee1162239be4331625a547e989409195a2b22dccfbe1557b2
SHA512 8dcb202fc390a2784d801e2b4043a4aa9f1c651f5bdfa00d98d6e0a26dddfd0902ccdb6a86ac7fb28e254d195bd9d3867ac397efd162779bb4ef52a604ebb61d

/data/data/com.unlimit.ulreader/files/stateless/dW1weF9pbnRlcm5hbA== /dW1weF9pbnRlcm5hbF8xNzE4MzUxNDAxMDIy

MD5 c12099d11275ffa5d71dbffce52349ea
SHA1 26be40b31f07917b2971702a1d04952ee0193114
SHA256 50ba8c555bd9d4c676031ac27c26dc08122fd93594e001eb97ee7a2996c5b729
SHA512 82f139063906b93deef22d630341d75a54760f71486c7fabb280f22aaed4462e137b4b0ece1b426e57edb5b362a2462ae7b9fde69739812672f986ef37273659

/data/data/com.unlimit.ulreader/app_tbs/share/core_info

MD5 dc35dd6609ddfd6696457c4a96a42f45
SHA1 076187bc19635bb4b65a084c134f0c0e2c0e268e
SHA256 13486676484f5be65fc2d213a86d89cbedce0032e1fe091d3770ec9a71661a5e
SHA512 b548c41b488ca97737f4e924b4c3c15a71d0277a1e1a9bf9891d8945d50544628f97ffa8aed5fcb84a54fe9d78838acc9b9adcbe4749a573ca8cb707d529dfc8