9eceb9cfa14c5f82cf31bdced380faec9bf35060defe355c066e1acb36ba66ea

General

Target

psk.apk
Size

2.0MB
MD5

26bbb10b28f49e3f0802e515b80b433c
SHA1

e92586db0d1e1699baba2de748562d11b2177380
SHA256

9eceb9cfa14c5f82cf31bdced380faec9bf35060defe355c066e1acb36ba66ea
SHA512

1febd124383efddad324b0cc6f0ce73fd231f0e8bcc85e076622533a66d30b3a86505acb079cce77d258f155ccc8522c645da49f5bd90cf2cc15d20560166ac0

Score

8^/10

banker evasion ransomware

Malware Config

Signatures

Makes use of the framework's Accessibility service. 3 IoCs

Processes:

com.mazocexayori.kute

description	ioc	process
Framework service call	android.accessibilityservice.IAccessibilityServiceConnection.findAccessibilityNodeInfoByAccessibilityId	com.mazocexayori.kute
Framework service call	android.accessibilityservice.IAccessibilityServiceConnection.findAccessibilityNodeInfosByViewId	com.mazocexayori.kute
Framework service call	android.accessibilityservice.IAccessibilityServiceConnection.findAccessibilityNodeInfosByText	com.mazocexayori.kute

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

Processes:

com.mazocexayori.kute

description ioc process

Framework service call android.content.pm.IPackageManager.getInstalledApplications com.mazocexayori.kute
Acquires the wake lock. 1 IoCs

Processes:

com.mazocexayori.kute

description ioc process

Framework service call android.os.IPowerManager.acquireWakeLock com.mazocexayori.kute

description	ioc	process
Framework service call	android.content.pm.IPackageManager.getInstalledApplications	com.mazocexayori.kute

description	ioc	process
Framework service call	android.os.IPowerManager.acquireWakeLock	com.mazocexayori.kute

Loads dropped Dex/Jar 2 IoCs

Runs executable file dropped to the device during analysis.

Processes:

com.mazocexayori.kute

ioc	pid	process
/data/user/0/com.mazocexayori.kute/app_DynamicOptDex/UNwnOrK.json	7043	com.mazocexayori.kute
[anon:dalvik-classes.dex extracted in memory from /data/user/0/com.mazocexayori.kute/app_DynamicOptDex/UNwnOrK.json]	7043	com.mazocexayori.kute

Queries the unique device ID (IMEI, MEID, IMSI).
Removes a system notification. 1 IoCs
evasion

Processes:

com.mazocexayori.kute

description ioc process

Framework service call android.app.INotificationManager.cancelNotificationWithTag com.mazocexayori.kute
Uses Crypto APIs (Might try to encrypt user data). 1 IoCs
ransomware

Processes:

com.mazocexayori.kute

description ioc process

Framework API call javax.crypto.Cipher.doFinal com.mazocexayori.kute

description	ioc	process
Framework service call	android.app.INotificationManager.cancelNotificationWithTag	com.mazocexayori.kute

description	ioc	process
Framework API call	javax.crypto.Cipher.doFinal	com.mazocexayori.kute

com.mazocexayori.kute
1⤵
- Makes use of the framework's Accessibility service.
- Queries a list of all the installed applications on the device (Might be used in an attempt to overlay legitimate apps).
- Acquires the wake lock.
- Loads dropped Dex/Jar
- Removes a system notification.
- Uses Crypto APIs (Might try to encrypt user data).
PID:7043

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

/data/user/0/com.mazocexayori.kute/app_DynamicOptDex/UNwnOrK.json
Filesize
455KB

MD5
b2693b13d14bc3fb7a2f439ac13a9e1a

SHA1
a2660240ad46e39bc74dc3c6e77c284e40fec464

SHA256
3d34855c12421965f240c93e5d69d7dc7a445e5a723f738513bd9c971a1e44a5

SHA512
0c62f9d640f301a12ed44f55be04a0ef3342022a87a8968444d1c4b04bdf8c66cbf45fc94e51eaf9e4ebe307140333ffd1ccccee8cffc879ee792617f3aad670

Download Submit
/data/user/0/com.mazocexayori.kute/app_DynamicOptDex/UNwnOrK.json
Filesize
899KB

MD5
469e764d83595045fb5f0d08b03adb3a

SHA1
9b31424e2be9320e4484235691c2e39aaf870271

SHA256
d4e5fc87c9c19bcaa58bd78327d7eb240c983435cd6eaa772424c4166248177c

SHA512
7caca18d874d3731cc7a5ebfc9f1ddfe87793557e00b5592e909f333f6e1a1dbb12040132d51ba02567360720d54e716102c212f711b9a80ceec8c3f1194e56f

Download Submit
/data/user/0/com.mazocexayori.kute/app_DynamicOptDex/oat/UNwnOrK.json.cur.prof
MD5
d41d8cd98f00b204e9800998ecf8427e

SHA1
da39a3ee5e6b4b0d3255bfef95601890afd80709

SHA256
e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

SHA512
cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

Download Submit
[anon:dalvik-classes.dex extracted in memory from /data/user/0/com.mazocexayori.kute/app_DynamicOptDex/UNwnOrK.json]
Filesize
899KB

MD5
469e764d83595045fb5f0d08b03adb3a

SHA1
9b31424e2be9320e4484235691c2e39aaf870271

SHA256
d4e5fc87c9c19bcaa58bd78327d7eb240c983435cd6eaa772424c4166248177c

SHA512
7caca18d874d3731cc7a5ebfc9f1ddfe87793557e00b5592e909f333f6e1a1dbb12040132d51ba02567360720d54e716102c212f711b9a80ceec8c3f1194e56f

Download Submit

Analysis

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