Analysis
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max time kernel
147s -
max time network
153s -
platform
android-9_x86 -
resource
android-x86-arm-20240910-en -
resource tags
arch:armarch:x86image:android-x86-arm-20240910-enlocale:en-usos:android-9-x86system -
submitted
18-12-2024 22:04
Static task
static1
Behavioral task
behavioral1
Sample
a3a7ac72f6c84995cc013c4e9b55470d405ca5484c2d511cbde3dd689fb0d176.apk
Resource
android-x86-arm-20240910-en
Behavioral task
behavioral2
Sample
a3a7ac72f6c84995cc013c4e9b55470d405ca5484c2d511cbde3dd689fb0d176.apk
Resource
android-x64-20240910-en
Behavioral task
behavioral3
Sample
a3a7ac72f6c84995cc013c4e9b55470d405ca5484c2d511cbde3dd689fb0d176.apk
Resource
android-x64-arm64-20240910-en
General
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Target
a3a7ac72f6c84995cc013c4e9b55470d405ca5484c2d511cbde3dd689fb0d176.apk
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Size
3.1MB
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MD5
ce9e6ccdae01bbfe906ceeea7637df66
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SHA1
9b2f30ddc97260a1fea8a83227f6722967d0a0cc
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SHA256
a3a7ac72f6c84995cc013c4e9b55470d405ca5484c2d511cbde3dd689fb0d176
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SHA512
880e719ce476f1033ff6cc0b9b746690d8bfc371dda0dead2ede1c6de96691663219afc06ba2770eec824f4f8bfe696f449bbec3db80589c768a532e6f6a656a
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SSDEEP
98304:s3lPxBolaf0UcNbydyEZqP0kJBxWNuiArhZe:s3wEZyrjJhZe
Malware Config
Extracted
ermac
http://154.216.20.102
Extracted
hook
http://154.216.20.102
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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Ermac2 payload 2 IoCs
resource yara_rule behavioral1/memory/4285-0.dex family_ermac2 behavioral1/memory/4260-0.dex family_ermac2 -
Hook
Hook is an Android malware that is based on Ermac with RAT capabilities.
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Hook family
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Loads dropped Dex/Jar 1 TTPs 2 IoCs
Runs executable file dropped to the device during analysis.
ioc pid Process /data/user/0/com.ameliami.kuri/app_waste/aYFQOds.json 4285 /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.ameliami.kuri/app_waste/aYFQOds.json --output-vdex-fd=41 --oat-fd=42 --oat-location=/data/user/0/com.ameliami.kuri/app_waste/oat/x86/aYFQOds.odex --compiler-filter=quicken --class-loader-context=& /data/user/0/com.ameliami.kuri/app_waste/aYFQOds.json 4260 com.ameliami.kuri -
Makes use of the framework's Accessibility service 4 TTPs 3 IoCs
Retrieves information displayed on the phone screen using AccessibilityService.
description ioc Process Framework service call android.accessibilityservice.IAccessibilityServiceConnection.findAccessibilityNodeInfoByAccessibilityId com.ameliami.kuri Framework service call android.accessibilityservice.IAccessibilityServiceConnection.findAccessibilityNodeInfosByText com.ameliami.kuri Framework service call android.accessibilityservice.IAccessibilityServiceConnection.findAccessibilityNodeInfosByViewId com.ameliami.kuri -
Queries a list of all the installed applications on the device (Might be used in an attempt to overlay legitimate apps) 1 TTPs
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Queries information about running processes on the device 1 TTPs 1 IoCs
Application may abuse the framework's APIs to collect information about running processes on the device.
description ioc Process Framework service call android.app.IActivityManager.getRunningAppProcesses com.ameliami.kuri -
Queries the phone number (MSISDN for GSM devices) 1 TTPs
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Acquires the wake lock 1 IoCs
description ioc Process Framework service call android.os.IPowerManager.acquireWakeLock com.ameliami.kuri -
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.
description ioc Process Framework service call android.app.IActivityManager.setServiceForeground com.ameliami.kuri -
Performs UI accessibility actions on behalf of the user 1 TTPs 5 IoCs
Application may abuse the accessibility service to prevent their removal.
ioc Process android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction com.ameliami.kuri android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction com.ameliami.kuri android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction com.ameliami.kuri android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction com.ameliami.kuri android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction com.ameliami.kuri -
Queries information about the current Wi-Fi connection 1 TTPs 1 IoCs
Application may abuse the framework's APIs to collect information about the current Wi-Fi connection.
description ioc Process Framework service call android.net.wifi.IWifiManager.getConnectionInfo com.ameliami.kuri -
Queries the mobile country code (MCC) 1 TTPs 1 IoCs
description ioc Process Framework service call com.android.internal.telephony.ITelephony.getNetworkCountryIsoForPhone com.ameliami.kuri -
Reads information about phone network operator. 1 TTPs
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Requests accessing notifications (often used to intercept notifications before users become aware). 1 TTPs 1 IoCs
description ioc Process Intent action android.settings.ACTION_NOTIFICATION_LISTENER_SETTINGS com.ameliami.kuri -
Registers a broadcast receiver at runtime (usually for listening for system events) 1 TTPs 1 IoCs
description ioc Process Framework service call android.app.IActivityManager.registerReceiver com.ameliami.kuri -
Schedules tasks to execute at a specified time 1 TTPs 1 IoCs
Application may abuse the framework's APIs to perform task scheduling for initial or recurring execution of malicious code.
description ioc Process Framework service call android.app.job.IJobScheduler.schedule com.ameliami.kuri -
Uses Crypto APIs (Might try to encrypt user data) 1 TTPs 1 IoCs
description ioc Process Framework API call javax.crypto.Cipher.doFinal com.ameliami.kuri -
Checks CPU information 2 TTPs 1 IoCs
description ioc Process File opened for read /proc/cpuinfo com.ameliami.kuri -
Checks memory information 2 TTPs 1 IoCs
description ioc Process File opened for read /proc/meminfo com.ameliami.kuri
Processes
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com.ameliami.kuri1⤵
- Loads dropped Dex/Jar
- Makes use of the framework's Accessibility service
- Queries information about running processes on the device
- Acquires the wake lock
- Makes use of the framework's foreground persistence service
- Performs UI accessibility actions on behalf of the user
- Queries information about the current Wi-Fi connection
- Queries the mobile country code (MCC)
- Requests accessing notifications (often used to intercept notifications before users become aware).
- Registers a broadcast receiver at runtime (usually for listening for system events)
- Schedules tasks to execute at a specified time
- Uses Crypto APIs (Might try to encrypt user data)
- Checks CPU information
- Checks memory information
PID:4260 -
/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.ameliami.kuri/app_waste/aYFQOds.json --output-vdex-fd=41 --oat-fd=42 --oat-location=/data/user/0/com.ameliami.kuri/app_waste/oat/x86/aYFQOds.odex --compiler-filter=quicken --class-loader-context=&2⤵
- Loads dropped Dex/Jar
PID:4285
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Network
MITRE ATT&CK Mobile v15
Persistence
Event Triggered Execution
1Broadcast Receivers
1Foreground Persistence
1Scheduled Task/Job
1Defense Evasion
Download New Code at Runtime
1Foreground Persistence
1Impair Defenses
1Prevent Application Removal
1Input Injection
1Virtualization/Sandbox Evasion
2System Checks
2Credential Access
Access Notifications
1Input Capture
2GUI Input Capture
1Keylogging
1Discovery
Process Discovery
1Software Discovery
1Security Software Discovery
1System Information Discovery
2System Network Configuration Discovery
3System Network Connections Discovery
1Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
735KB
MD5da8dd007ff8679c6f76791e3770d4387
SHA1afa0f7c78b9d4ac3d7c368486f3d6d9bf65b1cd0
SHA256e3d50f891c6d30c697e9f8d2141e5c90116afe2bd0d8e804a439c3eed09d9e6c
SHA512b22dc223631e5e25469b95a657059fe2a14107e769fc6428f4265fe02b33720f75ad4aa8642afd8d051ad0040c47769b62c4900491a6dbef33017e758fde86ad
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Filesize
735KB
MD57d26bf9639dbb6f272646d94780cc967
SHA1a296000f94e8d0c1078e3d13b6ddc4b79ee4ab73
SHA25605936241b83ba312861ce30b0e37d0d2b3139efc6a3e3e9b5f53e35b2c7c89db
SHA51236a8565d3f86a6b3f9a21d2a88e397faa294746b190181d9270aeae7b0ff1e12943770c722dffeedc0a0f351402239d8ece8249280283d4bac8011612f63d459
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Filesize
3KB
MD5714057c9febab4cacf51885e4cacc99c
SHA1d5f8d090252aadd0463e19fe68fa4f70b4267ce7
SHA256b6f6e217220502df2b8dab4787bdc417877e084311671887b461cfd5f21611d1
SHA5127fbcc7dd5e6a11c6e9e83bcf587d65eb627b7977ea30dc849dd1d2c116383179660cda39896c6d21ce3628f782453c996f607934c158587b06c4b210f135cc28
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Filesize
4KB
MD5f2b4b0190b9f384ca885f0c8c9b14700
SHA1934ff2646757b5b6e7f20f6a0aa76c7f995d9361
SHA2560a8ffb6b327963558716e87db8946016d143e39f895fa1b43e95ba7032ce2514
SHA512ec12685fc0d60526eed4d38820aad95611f3e93ae372be5a57142d8e8a1ba17e6e5dfe381a4e1365dddc0b363c9c40daaffdc1245bd515fddac69bf1abacd7f1
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Filesize
512B
MD5293fbd37b965a888a7e5107e78b6af88
SHA1e8ecb3fec75213079d226a846d8603a88eb2f039
SHA256826d4b9a06372e45f889ccd810f559e1da0c2f438af939f2aa4bf043687b5c6d
SHA512a6b95285c060273fd2cf7283adb083113abb5eb71950404f8618dd0132a07eab1cb0e8a56a944df23effd794d41e556ad10f205780a852c622083854b8bc7e10
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Filesize
32KB
MD5bb7df04e1b0a2570657527a7e108ae23
SHA15188431849b4613152fd7bdba6a3ff0a4fd6424b
SHA256c35020473aed1b4642cd726cad727b63fff2824ad68cedd7ffb73c7cbd890479
SHA512768007e06b0cd9e62d50f458b9435c6dda0a6d272f0b15550f97c478394b743331c3a9c9236e09ab5b9cb3b423b2320a5d66eb3c7068db9ea37891ca40e47012
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Filesize
108KB
MD5e2d5443dc085ce1305d9876ff958a363
SHA1ac72559b3d9a010e9259d34b25f78964e5b2c6e6
SHA2567c933c41bfa8503b50021504c0eab5f27c72a025fb253922401cd74781886a4d
SHA5124b1d61f8b5ef65036f651c3cedd9e6a10ff0e4fe7b50f3902762c1f9eac56f75b6cfd17e675d7d81f6070d9baaab064b993325e78a71ad2410636fc12fab1bdd
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Filesize
173KB
MD5a8261cadfab7b905469522506c5de1fd
SHA101f64d960540b73e05ff1e03ff328b0c594f5970
SHA2564d693e4e826cdb0180134911b4065a456dcac1581a152bca0ac9633387654e81
SHA512610bdb48117ebb7e6671864ca27065adb8c805301da3732106a8f1ac70ac5b670fb8fb9b6065967dfff723487e61b325118d6b877e9633d046731d466335219f
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Filesize
16KB
MD5c95e7fecd6234d1cceea2d2013733622
SHA14273cd6921091bf6a01c449e5eee0b70c1487bb1
SHA2569140593eb775fa55a8fad505d44b3e9297ffb5a9fd77bd35835ddaeb785ee869
SHA51265e1867a9a63b392ed87c8b3ed4443d57575bc7ca5338fffe7e84f4e20c1eac1accd91ef12d494c49d34d760d8f59da27d2bc014c5d30e02750c37f21fe0c910
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Filesize
1.7MB
MD5b588406bb52e1bbe63faed6e89652b1a
SHA170568e247c89bff614685fc7431ff14a1e548570
SHA256ed95ca85cc00df4c5da7a0ad9b5f2c46c0fcce7c25814bede8173c10ec8cb29d
SHA5120a4f2d85bd6de5b69435c4dc4e8124e806e246d8e1080fd34b8665f2c70d2e8ff8132bbf129959aa5146a686f9442296c569a29c358ee0bd6c25e7b6bc176330
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Filesize
1.7MB
MD5a6ed08358a93a224a3f8810e4734388d
SHA19f2bc2746061857531303c9fa5888939aff7453a
SHA25614c0adb7693f3addd612684186c80035724ab1c41d0266c445c44e771c8ae6df
SHA512daa6f21899432071a8b73e04535338c6ee25450f04f98db59fa28d31738e7e6308949df948795bbd024ba4244588937831d50360734755b9a3abc03585fdf87d