Analysis
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max time kernel
142s -
max time network
153s -
platform
android-9_x86 -
resource
android-x86-arm-20240910-en -
resource tags
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submitted
07/04/2025, 22:18
General
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Target
d78f5b633d91250b783b62b4ea7141bf46293cc0d3745f6f42a14b0cd4322c32.apk
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Size
1002KB
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MD5
c312fbbacce545a419b5e88b6267c58a
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SHA1
1aa517acd6ec474c04e9646edf6c1776c052c495
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SHA256
d78f5b633d91250b783b62b4ea7141bf46293cc0d3745f6f42a14b0cd4322c32
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SHA512
1a1ce06870b6c9474a3477ac6813f9df00496f12361ec9808dcbe193e375c8ab9f8123f3081ddd896625aeda76db6ecc4a14eaa44f5bd42344058771ab495e2a
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SSDEEP
24576:997oSX6wvqGHV4ffMpbjUr1Mjd8/d8xd8Wd86d8Dd88d83d8ad8fd8osF:9C2514fcnksF
Malware Config
Extracted
ermac
http://192.168.1.51
Signatures
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Ermac
An Android banking trojan first seen in July 2021.
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Ermac family
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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 5 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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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