Malware Analysis Report

2025-08-10 23:58

Sample ID 240518-jek21shh5w
Target 539ec48c6473864f7aae3b1f2872abcd_JaffaCakes118
SHA256 ae5c2f74993ec93fae24f6504863c244f52ed6e2de4bcb0a6c0c926d364a61ca
Tags
banker discovery evasion impact persistence
score
8/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Mobile Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
8/10

SHA256

ae5c2f74993ec93fae24f6504863c244f52ed6e2de4bcb0a6c0c926d364a61ca

Threat Level: Likely malicious

The file 539ec48c6473864f7aae3b1f2872abcd_JaffaCakes118 was found to be: Likely malicious.

Malicious Activity Summary

banker discovery evasion impact persistence

Queries a list of all the installed applications on the device (Might be used in an attempt to overlay legitimate apps)

Checks if the Android device is rooted.

Checks CPU information

Checks memory information

Checks known Qemu files.

Queries information about running processes on the device

Queries information about the current Wi-Fi connection

Queries the mobile country code (MCC)

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

Checks if the internet connection is available

Requests dangerous framework permissions

Uses Crypto APIs (Might try to encrypt user data)

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-05-18 07:35

Signatures

Requests dangerous framework permissions

Description Indicator Process Target
Allows an application to record audio. android.permission.RECORD_AUDIO N/A N/A
Allows an app to access precise location. android.permission.ACCESS_FINE_LOCATION N/A N/A
Allows an app to access approximate location. android.permission.ACCESS_COARSE_LOCATION N/A N/A
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 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 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 send SMS messages. android.permission.SEND_SMS N/A N/A
Allows an application to read SMS messages. android.permission.READ_SMS N/A N/A
Allows an application to request installing packages. android.permission.REQUEST_INSTALL_PACKAGES N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-05-18 07:34

Reported

2024-05-18 07:38

Platform

android-x86-arm-20240514-en

Max time kernel

67s

Max time network

131s

Command Line

com.ydrxg2gg.ydcs

Signatures

Checks if the Android device is rooted.

evasion
Description Indicator Process Target
N/A /sbin/su N/A N/A

Queries a list of all the installed applications on the device (Might be used in an attempt to overlay legitimate apps)

banker discovery

Checks CPU information

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

Checks known Qemu files.

evasion
Description Indicator Process Target
N/A /system/lib/libc_malloc_debug_qemu.so N/A N/A

Checks memory information

evasion discovery
Description Indicator Process Target
File opened for read /proc/meminfo 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
Framework service call android.app.IActivityManager.getRunningAppProcesses 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

Queries the mobile country code (MCC)

discovery
Description Indicator Process Target
Framework service call com.android.internal.telephony.ITelephony.getNetworkCountryIsoForPhone 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
Framework service call android.app.IActivityManager.registerReceiver N/A N/A

Checks if the internet connection is available

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

Processes

com.ydrxg2gg.ydcs

chmod 755 /data/user/0/com.ydrxg2gg.ydcs/files/mycpuinfo

/data/user/0/com.ydrxg2gg.ydcs/files/mycpuinfo

/system/bin/cat /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_max_freq

com.ydrxg2gg.ydcs:pushservice

Network

Country Destination Domain Proto
GB 216.58.213.3:443 tcp
GB 142.250.200.14:443 tcp
N/A 224.0.0.251:5353 udp
US 1.1.1.1:53 track.37.com.cn udp
CN 1.14.168.226:443 track.37.com.cn tcp
US 1.1.1.1:53 m.api.m.37.com udp
CN 42.194.157.10:80 m.api.m.37.com tcp
US 1.1.1.1:53 dlied1.qq.com udp
CN 1.14.168.226:443 track.37.com.cn tcp
CN 1.14.168.226:443 track.37.com.cn tcp
US 1.1.1.1:53 dlied1.qq.com udp
HK 119.28.164.209:443 dlied1.qq.com tcp
US 1.1.1.1:53 sdk.open.talk.gepush.com udp
US 1.1.1.1:53 sdk.open.talk.igexin.com udp
US 1.1.1.1:53 sdk.open.talk.getui.net udp
CN 183.134.98.112:5224 sdk.open.talk.getui.net tcp
CN 183.134.98.102:5224 sdk.open.talk.getui.net tcp
CN 183.134.98.102:5224 sdk.open.talk.getui.net tcp
CN 42.194.157.10:80 m.api.m.37.com tcp
CN 1.14.168.226:443 track.37.com.cn tcp
US 1.1.1.1:53 semanticlocation-pa.googleapis.com udp
GB 216.58.204.74:443 semanticlocation-pa.googleapis.com tcp
GB 172.217.169.14:443 tcp
US 1.1.1.1:53 android.apis.google.com udp
GB 142.250.187.238:443 android.apis.google.com tcp
CN 183.134.98.112:5224 sdk.open.talk.getui.net tcp
CN 183.134.98.102:5224 sdk.open.talk.getui.net tcp
CN 183.134.98.102:5224 sdk.open.talk.getui.net tcp
CN 183.134.98.112:5224 sdk.open.talk.getui.net tcp
CN 183.134.98.102:5224 sdk.open.talk.getui.net tcp
CN 183.134.98.102:5224 sdk.open.talk.getui.net tcp
CN 183.134.98.112:5224 sdk.open.talk.getui.net tcp
CN 183.134.98.102:5224 sdk.open.talk.getui.net tcp
CN 183.134.98.102:5224 sdk.open.talk.getui.net tcp
CN 183.134.98.112:5224 sdk.open.talk.getui.net tcp
CN 183.134.98.102:5224 sdk.open.talk.getui.net tcp
CN 183.134.98.102:5224 sdk.open.talk.getui.net tcp
CN 183.134.98.112:5224 sdk.open.talk.getui.net tcp

Files

/data/data/com.ydrxg2gg.ydcs/files/mycpuinfo

MD5 a50debc3697720b320f05ae34b2c96f3
SHA1 c8372edbe34f61ec58c1561c85a697438c38f894
SHA256 36a113b225f5b23433a24fbfb4b321ead2f635b9c03ee0aacbffe66e2781d8ad
SHA512 ab58b02e6d49fda37dc5d2e9f5f811965448751bb6cbd4ccea585b556131902c25517dffa2b77bd94bf8e3bdbfd96deb260e662814a05f0740c67f0ce3f09908

/data/data/com.ydrxg2gg.ydcs/files/tss_tmp/tss_lcp.dat.tmp

MD5 7969662cbeba79dce2031a64edcb2b30
SHA1 dade6f14b6b1890835eaf67779acbfb35668b3c1
SHA256 7d919d13562d5d283449887ebbd77c2fe80955c3dcec5d897b379fb30ee344a2
SHA512 c084759b3bdc0b170a4f7086862190e538db80a2c1f3db127292259dea0ce08b791059ffc5f1680211064e49cbc725ef76d36c6d63b8d1f9365c5905caf317fa

/data/data/com.ydrxg2gg.ydcs/files/GameProtector3

MD5 735a2d9feec4e1ed7c68f7723170cab9
SHA1 2a7240d1546305a93672b05bfc69249fbf337ec3
SHA256 eee622dbe2ffd4a1f874b27fbebd614811646c683166ba29d7ebc34017ae4f61
SHA512 57a01cf367cc6dbf55073d19f30b3efa9e16ba5714b782a15287fbf8c764c025e1a8c9f6f42e14174adfc6e369fa9faf3349b29e7c72a93370bbf93536dd6adc

/data/data/com.ydrxg2gg.ydcs/files/tss_tmp/tss_emu_c2.dat.tmp

MD5 9d24ef1925a136896c6746b07f5639c0
SHA1 a1a79134808c292fb4fba1a3c7e135166233a71c
SHA256 9ee3cbd23ac3dc3b82d735a721ad01e1ca882f850100827530df2f79b6fa390a
SHA512 30974553f7084ceacda3cc0e05917aad307261c01ab62f131645c77876d3685bfe857653d63b3aed367058e650c76899514d1c95a68a03890bbcb9668dc48e49

/data/data/com.ydrxg2gg.ydcs/databases/pushsdk.db

MD5 f2b4b0190b9f384ca885f0c8c9b14700
SHA1 934ff2646757b5b6e7f20f6a0aa76c7f995d9361
SHA256 0a8ffb6b327963558716e87db8946016d143e39f895fa1b43e95ba7032ce2514
SHA512 ec12685fc0d60526eed4d38820aad95611f3e93ae372be5a57142d8e8a1ba17e6e5dfe381a4e1365dddc0b363c9c40daaffdc1245bd515fddac69bf1abacd7f1

/data/data/com.ydrxg2gg.ydcs/databases/pushsdk.db-shm

MD5 bb7df04e1b0a2570657527a7e108ae23
SHA1 5188431849b4613152fd7bdba6a3ff0a4fd6424b
SHA256 c35020473aed1b4642cd726cad727b63fff2824ad68cedd7ffb73c7cbd890479
SHA512 768007e06b0cd9e62d50f458b9435c6dda0a6d272f0b15550f97c478394b743331c3a9c9236e09ab5b9cb3b423b2320a5d66eb3c7068db9ea37891ca40e47012

/data/data/com.ydrxg2gg.ydcs/databases/pushsdk.db-wal

MD5 3607b90355dc83a0460e8b00f367d77f
SHA1 d049ad05ee64b7dbf64ea9eb55a65971c8b6f5e2
SHA256 c85b584203a9b5bcd254cdbc791ad88a07e436265917e725b0e7ba55ee9e046c
SHA512 947f102c0c3721e3936d57bc2233957227ddd5a5f5c28bfa311d032ef4d6003a3e917e80b2b625ad2d629f66e7f174d368ff5c6f18e4f1221816b9e8fcff6ae9

/storage/emulated/0/libs/com.ydrxg2gg.ydcs.bin

MD5 dfe6ac6bf1451fa25db7be4b362035dc
SHA1 a049953daab03a5216b2fe82b0307be1e07bf6df
SHA256 5687a4fe5649b34981284c2dc21b03da887cfee86958d01b55373ef012aba754
SHA512 1169dc0dd11de672abbca5945da7f85261e5387a54e4926f2c5fdb8ece3551b4a09bd99bba3197826e2cc6b4403acb5a4ffb9476f91cb0c1ec39481ff60e1a64