Analysis
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max time kernel
179s -
max time network
177s -
platform
android_x86 -
resource
android-x86-arm-20240624-en -
resource tags
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submitted
27-06-2024 17:29
General
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Target
ERMAK.apk
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Size
1002KB
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MD5
5526e85de73065e2580bbdb5ed4fc9cb
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SHA1
5114d93500e55d3b4829423e0debfa4329d6f0f9
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SHA256
7a4238fc6f5d3c7731c2eb33911298eaa36986040858af56e76628c5dc83e265
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SHA512
c6aecaf46485ee6dacd80cd13857a4c38c56b3074b83ceb355b287ba5d947536e07445c3551276b734fe866dbd6bc4e1a54b3fb7800da5fe7709f820aa5ba255
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SSDEEP
24576:/1GA92E9imQxV4ffopXIzJs/d8zd8ld8Cd8ed83d8Ad8Ld8Od87d85+p:/wA9c/4fSgp
Malware Config
Extracted
ermac
http://103.139.1.202:3434
Signatures
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Ermac
An Android banking trojan first seen in July 2021.
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Removes its main activity from the application launcher 1 TTPs 1 IoCs
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Makes use of the framework's Accessibility service 4 TTPs 3 IoCs
Retrieves information displayed on the phone screen using AccessibilityService.
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Queries the phone number (MSISDN for GSM devices) 1 TTPs
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Acquires the wake lock 1 IoCs
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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.
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Performs UI accessibility actions on behalf of the user 1 TTPs 7 IoCs
Application may abuse the accessibility service to prevent their removal.
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Queries the mobile country code (MCC) 1 TTPs 1 IoCs
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Queries the unique device ID (IMEI, MEID, IMSI) 1 TTPs
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Reads information about phone network operator. 1 TTPs
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Requests disabling of battery optimizations (often used to enable hiding in the background). 1 TTPs 1 IoCs
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Registers a broadcast receiver at runtime (usually for listening for system events) 1 TTPs 1 IoCs
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Uses Crypto APIs (Might try to encrypt user data) 1 TTPs 1 IoCs
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Checks CPU information 2 TTPs 1 IoCs
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Checks memory information 2 TTPs 1 IoCs
Processes
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nusku.ermacv2.apk1⤵
- Removes its main activity from the application launcher
- 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 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
Network
MITRE ATT&CK Mobile v15
Persistence
Event Triggered Execution
1Broadcast Receivers
1Foreground Persistence
1Defense Evasion
Foreground Persistence
1Hide Artifacts
2Suppress Application Icon
1User Evasion
1Impair Defenses
1Prevent Application Removal
1Input Injection
1Virtualization/Sandbox Evasion
2System Checks
2