cerberus | ea808ea86945230a259643abb5b4c90238f4e2ac08c90a37ce55ebadfdcf3591

General

Target

ea808ea86945230a259643abb5b4c90238f4e2ac08c90a37ce55ebadfdcf3591.apk
Size

1.7MB
MD5

9d2b1df9e4fbd046d6c0e5936c1b32d7
SHA1

c4fb61c9a22933ac3450c5a5e19f6f5309503941
SHA256

ea808ea86945230a259643abb5b4c90238f4e2ac08c90a37ce55ebadfdcf3591
SHA512

955796af1e897219af95875dfa5b37b8aafba4e5a7074141883a51771dbbfa7b1767f3bc13e56d000dbf644d46d21b297c4528622c6a656ed017cc7f11f72df5
SSDEEP

49152:uAVP33DEf2PwSYYAqyWcqCk9mVgISHFXqOCLMeLk3:ug/ofodY+iqCpVg+3oeLk3

Score

10^/10

cerberus banker collection credential_access defense_evasion discovery evasion impact infostealer persistence rat stealth trojan

Malware Config

Extracted

Family

cerberus

C2

http://83.136.233.183/

Signatures

Cerberus
An Android banker that is being rented to actors beginning in 2019.
banker trojan infostealer evasion rat cerberus
Cerberus family
cerberus

Removes its main activity from the application launcher 1 TTPs 2 IoCs

stealth trojan evasion

Suppress Application Icon

T1628.001

pid	Process
4262	com.title.weasel
4262	com.title.weasel

Loads dropped Dex/Jar 1 TTPs 2 IoCs

Runs executable file dropped to the device during analysis.

evasion

Download New Code at Runtime

T1407

ioc	pid	Process
/data/user/0/com.title.weasel/app_DynamicOptDex/Kxtu.json	4287	/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.title.weasel/app_DynamicOptDex/Kxtu.json --output-vdex-fd=42 --oat-fd=43 --oat-location=/data/user/0/com.title.weasel/app_DynamicOptDex/oat/x86/Kxtu.odex --compiler-filter=quicken --class-loader-context=&
/data/user/0/com.title.weasel/app_DynamicOptDex/Kxtu.json	4262	com.title.weasel

Makes use of the framework's Accessibility service 4 TTPs 3 IoCs

Retrieves information displayed on the phone screen using AccessibilityService.

collection defense_evasion credential_access

Input Injection

T1516

Screen Capture

T1513

Keylogging

T1417.001

GUI Input Capture

T1417.002

description	ioc	Process
Framework service call	android.accessibilityservice.IAccessibilityServiceConnection.findAccessibilityNodeInfoByAccessibilityId	com.title.weasel
Framework service call	android.accessibilityservice.IAccessibilityServiceConnection.findAccessibilityNodeInfosByText	com.title.weasel
Framework service call	android.accessibilityservice.IAccessibilityServiceConnection.findAccessibilityNodeInfosByViewId	com.title.weasel

Queries the phone number (MSISDN for GSM devices) 1 TTPs
discovery

System Network Configuration Discovery
T1422

Performs UI accessibility actions on behalf of the user 1 TTPs 4 IoCs

Application may abuse the accessibility service to prevent their removal.

evasion

Prevent Application Removal

T1629.001

ioc	Process
android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction	com.title.weasel
android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction	com.title.weasel
android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction	com.title.weasel
android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction	com.title.weasel

Queries the mobile country code (MCC) 1 TTPs 1 IoCs

discovery

System Network Configuration Discovery

T1422

description	ioc	Process
Framework service call	com.android.internal.telephony.ITelephony.getNetworkCountryIsoForPhone	com.title.weasel

Requests changing the default SMS application. 2 TTPs 1 IoCs

collection impact

SMS Messages

T1636.004

SMS Control

T1582

description	ioc	Process
Intent action	android.provider.Telephony.ACTION_CHANGE_DEFAULT	com.title.weasel

Requests disabling of battery optimizations (often used to enable hiding in the background). 1 TTPs 1 IoCs

defense_evasion

User Evasion

T1628.002

description	ioc	Process
Intent action	android.settings.REQUEST_IGNORE_BATTERY_OPTIMIZATIONS	com.title.weasel

Listens for changes in the sensor environment (might be used to detect emulation) 1 TTPs 1 IoCs

defense_evasion

User Evasion

T1628.002

description	ioc	Process
Framework API call	android.hardware.SensorManager.registerListener	com.title.weasel

Registers a broadcast receiver at runtime (usually for listening for system events) 1 TTPs 1 IoCs

persistence

Broadcast Receivers

T1624.001

description	ioc	Process
Framework service call	android.app.IActivityManager.registerReceiver	com.title.weasel

Checks CPU information 2 TTPs 1 IoCs

System Checks

T1633.001

System Information Discovery

T1426

description	ioc	Process
File opened for read	/proc/cpuinfo	com.title.weasel

Checks memory information 2 TTPs 1 IoCs

System Checks

T1633.001

System Information Discovery

T1426

description	ioc	Process
File opened for read	/proc/meminfo	com.title.weasel

com.title.weasel
1⤵
- Removes its main activity from the application launcher
- Loads dropped Dex/Jar
- Makes use of the framework's Accessibility service
- Performs UI accessibility actions on behalf of the user
- Queries the mobile country code (MCC)
- Requests changing the default SMS application.
- Requests disabling of battery optimizations (often used to enable hiding in the background).
- Listens for changes in the sensor environment (might be used to detect emulation)
- Registers a broadcast receiver at runtime (usually for listening for system events)
- Checks CPU information
- Checks memory information
PID:4262
- /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.title.weasel/app_DynamicOptDex/Kxtu.json --output-vdex-fd=42 --oat-fd=43 --oat-location=/data/user/0/com.title.weasel/app_DynamicOptDex/oat/x86/Kxtu.odex --compiler-filter=quicken --class-loader-context=&
  2⤵
  - Loads dropped Dex/Jar
  PID:4287

Network

MITRE ATT&CK Mobile v15

Initial Access

Execution

Persistence

Event Triggered Execution

1

T1624

Broadcast Receivers

1

T1624.001

Privilege Escalation

Defense Evasion

Download New Code at Runtime

1

T1407

Hide Artifacts

3

T1628

Suppress Application Icon

1

T1628.001

User Evasion

2

T1628.002

Impair Defenses

1

T1629

Prevent Application Removal

Input Injection

Virtualization/Sandbox Evasion

2

T1633

System Checks

2

T1633.001

Credential Access

Input Capture

2

T1417

GUI Input Capture

1

T1417.002

Keylogging

1

T1417.001

Discovery

System Information Discovery

2

T1426

System Network Configuration Discovery

2

T1422

Lateral Movement

Collection

Input Capture

2

T1417

GUI Input Capture

1

T1417.002

Keylogging

1

T1417.001

Protected User Data

1

T1636

SMS Messages

Screen Capture

Command and Control

Exfiltration

Impact

Input Injection

SMS Control

Replay Monitor

Loading Replay Monitor...

Downloads

/data/data/com.title.weasel/app_DynamicOptDex/Kxtu.json

Filesize
64KB

MD5
929f0783712f2fe1fb19a56479560d47

SHA1
b1eb6af57876f1fe01e313a926cde5dc7dd39d33

SHA256
75e4f9558210c960acbdc35015ccb0666e3615513a226e909db3713d4c4e3cc9

SHA512
031ff7448301ab561ede85231eef10c9ba94e92dd42c2c35379ae8d8c2f2d5dd759e5ec0d1bd775fb8a15fdeedfeeb4345300f223af13b13a9a9a45ceed2d926

Download Submit
/data/data/com.title.weasel/app_DynamicOptDex/Kxtu.json

Filesize
64KB

MD5
4f72f389969a92516563ce8f25e795ed

SHA1
f45cdadb11d53f35049420eae1108be52ffede1d

SHA256
eff6b20ebe5ffefe27eedd4b11e4f0e924f00fbae10001cf09634e41bb02bd7f

SHA512
2b384b8eb9d473cbf9fe6e0dabf3020fa00b900081327942b528a206fa3bd23a7bc66b34195e769cf2b800a380c99e749d454d5743b01a29d89199139f7d64e2

Download Submit
/data/data/com.title.weasel/app_DynamicOptDex/oat/Kxtu.json.cur.prof

Filesize
228B

MD5
15cd98567adb5199b8e8fbde1e390ebe

SHA1
5e8f42407531b60b179f996df37e3b73127ff0d4

SHA256
a06160909efebba0012ac31f373ed0308787e3062cccee4c1fae4369fc72a46c

SHA512
d036e9975a0603ef34438fea4673c3b599bc8b4f2402686a20d9b1b0447e01c91dbe751f7aaca698ce34e210dc8b907875bd6eda9d6bfdaffab974702dbd4bf5

Download Submit
/data/user/0/com.title.weasel/app_DynamicOptDex/Kxtu.json

Filesize
118KB

MD5
9fa1d3bb273dc75a540b67525ed18c7c

SHA1
ab315e871af1c869477fdc2e4ef8330932792288

SHA256
0512063947759a068a989abdf1bd1b298c6f7efb76a813a92714d9f9711a9561

SHA512
87d225e5e0fd47d40d35eba1d8fffa3ca6f78aec6a20dce6330d65dc9c24114b61d18503468bb2e261253859559cdd7c2236a0a293ad9b8fa149863927e4a354

Download Submit
/data/user/0/com.title.weasel/app_DynamicOptDex/Kxtu.json

Filesize
118KB

MD5
319edfc7800cd95f601e378877da93dd

SHA1
48dfc57aab013d0edafe34829dbe91ff7eac0fc6

SHA256
633eef55f1182663b9f0cefe056fc85a9fd1c5a4a146201a17677074c10afb85

SHA512
7b9de6b544731c3134e40503c73d261c65f0234ae511ba46e3829fa4d836b2d1f993e1082340ba1dcd89c4f1a8d3dd5a5bf83eaf9bf5ad004c0758d80cf7d1f9

Download Submit

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Mobile v15

Replay Monitor

Loading Replay Monitor...

Downloads