blackrock | 7d34aaf84754fb247507681bcd821f9533f24c6d78aa6779a11f4d789d4822ee

General

Target

d576f944e1ad344f29902fe75bf25eaf.apk
Size

1.9MB
MD5

d576f944e1ad344f29902fe75bf25eaf
SHA1

e8d55c4e83b4a7511fb709e78f9f01402a578b9a
SHA256

7d34aaf84754fb247507681bcd821f9533f24c6d78aa6779a11f4d789d4822ee
SHA512

8c569c426af7d90f723a6717b679e2d5f1686fcbddb19c5167cd0fa2c5e6b23e2ac727c74cc9997c098a5eb127a3cc4a4b00082e8cc58a5e62eafa4a1168b9a7

Score

10^/10

blackrock banker infostealer ransomware trojan

Malware Config

Signatures

BlackRock
BlackRock is an android banker based on Xerxes banking Trojan.
banker trojan infostealer blackrock

BlackRock Payload 5 IoCs

resource	yara_rule
behavioral1/memory/4078-0.dex	family_blackrock
behavioral1/memory/4517-0.dex	family_blackrock
behavioral1/memory/4078-1.dex	family_blackrock
behavioral1/memory/4714-0.dex	family_blackrock
behavioral1/memory/4714-1.dex	family_blackrock

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

description	ioc	Process
Framework service call	android.accessibilityservice.IAccessibilityServiceConnection.findAccessibilityNodeInfoByAccessibilityId	fpjwhqsl.dzpycoeasyhs.cwnporwocambskrxcxiug
Framework service call	android.accessibilityservice.IAccessibilityServiceConnection.findAccessibilityNodeInfosByViewId	fpjwhqsl.dzpycoeasyhs.cwnporwocambskrxcxiug
Framework service call	android.accessibilityservice.IAccessibilityServiceConnection.findAccessibilityNodeInfosByText	fpjwhqsl.dzpycoeasyhs.cwnporwocambskrxcxiug

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

banker

description	ioc	Process
Framework service call	android.content.pm.IPackageManager.getInstalledApplications	fpjwhqsl.dzpycoeasyhs.cwnporwocambskrxcxiug:cproc

Acquires the wake lock. 1 IoCs

description	ioc	Process
Framework service call	android.os.IPowerManager.acquireWakeLock	fpjwhqsl.dzpycoeasyhs.cwnporwocambskrxcxiug

Loads dropped Dex/Jar 5 IoCs

Runs executable file dropped to the device during analysis.

ioc	pid	Process
/data/user/0/fpjwhqsl.dzpycoeasyhs.cwnporwocambskrxcxiug/app_DynamicOptDex/bgu.json	4078	fpjwhqsl.dzpycoeasyhs.cwnporwocambskrxcxiug
/data/user/0/fpjwhqsl.dzpycoeasyhs.cwnporwocambskrxcxiug/app_DynamicOptDex/bgu.json	4517	/system/bin/dex2oat --debuggable --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 --debuggable --generate-mini-debug-info --dex-file=/data/user/0/fpjwhqsl.dzpycoeasyhs.cwnporwocambskrxcxiug/app_DynamicOptDex/bgu.json --output-vdex-fd=43 --oat-fd=44 --oat-location=/data/user/0/fpjwhqsl.dzpycoeasyhs.cwnporwocambskrxcxiug/app_DynamicOptDex/oat/x86/bgu.odex --compiler-filter=quicken --class-loader-context=&
/data/user/0/fpjwhqsl.dzpycoeasyhs.cwnporwocambskrxcxiug/app_DynamicOptDex/bgu.json	4078	fpjwhqsl.dzpycoeasyhs.cwnporwocambskrxcxiug
/data/user/0/fpjwhqsl.dzpycoeasyhs.cwnporwocambskrxcxiug/app_DynamicOptDex/bgu.json	4714	fpjwhqsl.dzpycoeasyhs.cwnporwocambskrxcxiug:cproc
/data/user/0/fpjwhqsl.dzpycoeasyhs.cwnporwocambskrxcxiug/app_DynamicOptDex/bgu.json	4714	fpjwhqsl.dzpycoeasyhs.cwnporwocambskrxcxiug:cproc

Requests enabling of the accessibility settings. 1 IoCs

description	ioc	Process
Intent action	android.settings.ACCESSIBILITY_SETTINGS	fpjwhqsl.dzpycoeasyhs.cwnporwocambskrxcxiug:cproc

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

ransomware

description	ioc	Process
Framework API call	javax.crypto.Cipher.doFinal	fpjwhqsl.dzpycoeasyhs.cwnporwocambskrxcxiug:cproc

fpjwhqsl.dzpycoeasyhs.cwnporwocambskrxcxiug
1⤵
- Makes use of the framework's Accessibility service.
- Acquires the wake lock.
- Loads dropped Dex/Jar
PID:4078
- /system/bin/dex2oat --debuggable --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 --debuggable --generate-mini-debug-info --dex-file=/data/user/0/fpjwhqsl.dzpycoeasyhs.cwnporwocambskrxcxiug/app_DynamicOptDex/bgu.json --output-vdex-fd=43 --oat-fd=44 --oat-location=/data/user/0/fpjwhqsl.dzpycoeasyhs.cwnporwocambskrxcxiug/app_DynamicOptDex/oat/x86/bgu.odex --compiler-filter=quicken --class-loader-context=&
  2⤵
  - Loads dropped Dex/Jar
  PID:4517

fpjwhqsl.dzpycoeasyhs.cwnporwocambskrxcxiug:cproc
1⤵
- Queries a list of all the installed applications on the device (Might be used in an attempt to overlay legitimate apps).
- Loads dropped Dex/Jar
- Requests enabling of the accessibility settings.
- Uses Crypto APIs (Might try to encrypt user data).
PID:4714

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

/data/user/0/fpjwhqsl.dzpycoeasyhs.cwnporwocambskrxcxiug/app_DynamicOptDex/bgu.json

Filesize
514KB

MD5
c9bac2da8f637fd0ef272158d2d78014

SHA1
014b75f482625f9629210aba6eaa9bec1798e527

SHA256
e64c2ee74ec40219a89975746c4a4d4e4e2b658ff9cb28cb47abb39db64148ab

SHA512
d715d520ea5ed432bccab1ec657832b90c47e6cb2702fa8875dc60581d21cd2c9c9bf2ce10c7c12b8c0ba99619705c124331665720ff320231c345c4728d6fd0

Download Submit
/data/user/0/fpjwhqsl.dzpycoeasyhs.cwnporwocambskrxcxiug/app_DynamicOptDex/bgu.json

Filesize
514KB

MD5
cd87736443116d03601292616ba8e9b2

SHA1
a263d970df0e50e499a54a26b1c244c9879a8462

SHA256
1eaabb792f3796af61a7659dcdef371da7f2963dde8327c02afcf7801f9ca42b

SHA512
00abecc25c6eba155c74ccef19e02b6476cea1873546e4f6daf4e5a85363e7232f81df1ff194689b061132e373c87ac6bec5819f46bd86e42adad2337eb0400e

Download Submit
/data/user/0/fpjwhqsl.dzpycoeasyhs.cwnporwocambskrxcxiug/app_DynamicOptDex/bgu.json

Filesize
514KB

MD5
cd87736443116d03601292616ba8e9b2

SHA1
a263d970df0e50e499a54a26b1c244c9879a8462

SHA256
1eaabb792f3796af61a7659dcdef371da7f2963dde8327c02afcf7801f9ca42b

SHA512
00abecc25c6eba155c74ccef19e02b6476cea1873546e4f6daf4e5a85363e7232f81df1ff194689b061132e373c87ac6bec5819f46bd86e42adad2337eb0400e

Download Submit
/data/user/0/fpjwhqsl.dzpycoeasyhs.cwnporwocambskrxcxiug/app_DynamicOptDex/bgu.json

Filesize
514KB

MD5
cd87736443116d03601292616ba8e9b2

SHA1
a263d970df0e50e499a54a26b1c244c9879a8462

SHA256
1eaabb792f3796af61a7659dcdef371da7f2963dde8327c02afcf7801f9ca42b

SHA512
00abecc25c6eba155c74ccef19e02b6476cea1873546e4f6daf4e5a85363e7232f81df1ff194689b061132e373c87ac6bec5819f46bd86e42adad2337eb0400e

Download Submit
/data/user/0/fpjwhqsl.dzpycoeasyhs.cwnporwocambskrxcxiug/app_DynamicOptDex/bgu.json

Filesize
514KB

MD5
cd87736443116d03601292616ba8e9b2

SHA1
a263d970df0e50e499a54a26b1c244c9879a8462

SHA256
1eaabb792f3796af61a7659dcdef371da7f2963dde8327c02afcf7801f9ca42b

SHA512
00abecc25c6eba155c74ccef19e02b6476cea1873546e4f6daf4e5a85363e7232f81df1ff194689b061132e373c87ac6bec5819f46bd86e42adad2337eb0400e

Download Submit
/data/user/0/fpjwhqsl.dzpycoeasyhs.cwnporwocambskrxcxiug/app_DynamicOptDex/bgu.json

Filesize
514KB

MD5
cd87736443116d03601292616ba8e9b2

SHA1
a263d970df0e50e499a54a26b1c244c9879a8462

SHA256
1eaabb792f3796af61a7659dcdef371da7f2963dde8327c02afcf7801f9ca42b

SHA512
00abecc25c6eba155c74ccef19e02b6476cea1873546e4f6daf4e5a85363e7232f81df1ff194689b061132e373c87ac6bec5819f46bd86e42adad2337eb0400e

Download Submit

Analysis

Sharing