22819bef14ff445f8d63f10d163c6c8ffdd8a439be6f5c40a5229f90a5619f69

Analysis

max time kernel
161s
max time network
185s
platform
android_x86
resource
android-x86-arm-20240514-en
resource tags

androidarch:armarch:x86image:android-x86-arm-20240514-enlocale:en-usos:android-9-x86system
submitted
20/05/2024, 13:24

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General

Target

5f4de5cc0fa3e250a830289d8d4984d7_JaffaCakes118.apk
Size

15.9MB
MD5

5f4de5cc0fa3e250a830289d8d4984d7
SHA1

c12e7a420fe06b9150fdaff5f0c8518188f142d4
SHA256

22819bef14ff445f8d63f10d163c6c8ffdd8a439be6f5c40a5229f90a5619f69
SHA512

0a0326ed5959b19b867a35307e116600a0ed9796409cf5e9bb1aa9be79141b6ef94b88b4cdebd7ee10ece2f6c927d700605d11dbfd95da6ce4463a2601132f04
SSDEEP

393216:ehr3cuI1V89GMrXglFci1WcvVXkSvkDBUdH:szZcMrQzciY47h

Score

8^/10

banker discovery evasion impact persistence

Malware Config

Signatures

Queries a list of all the installed applications on the device (Might be used in an attempt to overlay legitimate apps) 1 TTPs
banker discovery

Security Software Discovery
T1418.001

Checks CPU information 2 TTPs 2 IoCs

Checks CPU information which indicate if the system is an emulator.

evasion discovery

System Checks

T1633.001

System Information Discovery

T1426

description	ioc	Process
File opened for read	/proc/cpuinfo	com.jjwxc.reader
File opened for read	/proc/cpuinfo	com.jjwxc.reader:channel

Loads dropped Dex/Jar 1 TTPs 2 IoCs

Runs executable file dropped to the device during analysis.

evasion

Download New Code at Runtime

T1407

ioc	pid	Process
/data/user/0/com.jjwxc.reader/app_libs/ymdex.jar	4361	/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.jjwxc.reader/app_libs/ymdex.jar --output-vdex-fd=69 --oat-fd=70 --oat-location=/data/user/0/com.jjwxc.reader/app_libs/oat/x86/ymdex.odex --compiler-filter=quicken --class-loader-context=&
/data/user/0/com.jjwxc.reader/app_libs/ymdex.jar	4270	com.jjwxc.reader

Queries information about running processes on the device 1 TTPs 2 IoCs

Application may abuse the framework's APIs to collect information about running processes on the device.

discovery

Process Discovery

T1424

description	ioc	Process
Framework service call	android.app.IActivityManager.getRunningAppProcesses	com.jjwxc.reader
Framework service call	android.app.IActivityManager.getRunningAppProcesses	com.jjwxc.reader:channel

Queries the phone number (MSISDN for GSM devices) 1 TTPs
discovery

System Network Configuration Discovery
T1422

Registers a broadcast receiver at runtime (usually for listening for system events) 1 TTPs 2 IoCs

persistence

Broadcast Receivers

T1624.001

description	ioc	Process
Framework service call	android.app.IActivityManager.registerReceiver	com.jjwxc.reader:channel
Framework service call	android.app.IActivityManager.registerReceiver	com.jjwxc.reader

Checks if the internet connection is available 1 TTPs 2 IoCs

discovery

System Network Connections Discovery

T1421

description	ioc	Process
Framework service call	android.net.IConnectivityManager.getActiveNetworkInfo	com.jjwxc.reader
Framework service call	android.net.IConnectivityManager.getActiveNetworkInfo	com.jjwxc.reader:channel

Reads information about phone network operator. 1 TTPs
discovery

System Network Configuration Discovery
T1422

Uses Crypto APIs (Might try to encrypt user data) 1 TTPs 2 IoCs

impact

Data Encrypted for Impact

T1471

description	ioc	Process
Framework API call	javax.crypto.Cipher.doFinal	com.jjwxc.reader
Framework API call	javax.crypto.Cipher.doFinal	com.jjwxc.reader:channel

com.jjwxc.reader
1⤵
- Checks CPU information
- Loads dropped Dex/Jar
- Queries information about running processes on the device
- Registers a broadcast receiver at runtime (usually for listening for system events)
- Checks if the internet connection is available
- Uses Crypto APIs (Might try to encrypt user data)
PID:4270
- /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.jjwxc.reader/app_libs/ymdex.jar --output-vdex-fd=69 --oat-fd=70 --oat-location=/data/user/0/com.jjwxc.reader/app_libs/oat/x86/ymdex.odex --compiler-filter=quicken --class-loader-context=&
  2⤵
  - Loads dropped Dex/Jar
  PID:4361
- cat /sys/class/net/wlan0/address
  2⤵
  PID:4412

com.jjwxc.reader:channel
1⤵
- Checks CPU information
- Queries information about running processes on the device
- Registers a broadcast receiver at runtime (usually for listening for system events)
- Checks if the internet connection is available
- Uses Crypto APIs (Might try to encrypt user data)
PID:4551

Network

MITRE ATT&CK Mobile v15

Initial Access

Execution

Persistence

Event Triggered Execution

T1624

Broadcast Receivers

T1624.001

Privilege Escalation

Defense Evasion

Download New Code at Runtime

T1407

Virtualization/Sandbox Evasion

T1633

System Checks

T1633.001

Credential Access

Discovery

Process Discovery

T1424

Software Discovery

T1418

Security Software Discovery

T1418.001

System Information Discovery

T1426

System Network Configuration Discovery

T1422

System Network Connections Discovery

T1421

Lateral Movement

Collection

Command and Control

Exfiltration

Impact