efe9a312cca9f2581932cf2a3b53b278435ce4aebe57be5281c9b1bf8e84f373

Analysis

max time kernel
147s
max time network
131s
platform
android_x86
resource
android-x86-arm-20240624-en
resource tags

androidarch:armarch:x86image:android-x86-arm-20240624-enlocale:en-usos:android-9-x86system
submitted
16/10/2024, 04:24

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General

Target
4b61749e9f76b1161c87200a079ff3c1_JaffaCakes118.apk
Size 901KB
Sample241016-e1dslswgkp
SHA256 efe9a312cca9f2581932cf2a3b53b278435ce4aebe57be5281c9b1bf8e84f373
MD5 4b61749e9f76b1161c87200a079ff3c1
SHA1 1355b7d361023cde77654c80bc49f2d672bb374d
SHA512 9013d13c8b0a2c3532efc0b132a81308fd650c70ab162aefb6fe22fe3873967de16cf72fdcb30b251c752529c9ab2c0402e1301ace24e9517a36f73120a64c5a
SSDEEP 12288:bGWzszq7SWaGRcVb7AXh2oRjyOifSiRZ/sY1PK9g5n/y+86qarlkyLpMvEqucbtm:qzpGwAx2oRjF5i4TYlxJmgHwl52j
MD5 SHA1 SHA512 SSDEEP

Score

8^/10

banker discovery evasion impact persistence stealth trojan

Malware Config

Signatures

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

stealth trojan evasion

Suppress Application Icon

T1628.001

pid	Process
4280	blue.kygz.xyzlc

Checks Android system properties for emulator presence. 1 TTPs 1 IoCs

evasion

System Checks

T1633.001

description	ioc	Process
Accessed system property	key: ro.product.model	blue.kygz.xyzlc

Loads dropped Dex/Jar 1 TTPs 4 IoCs

Runs executable file dropped to the device during analysis.

evasion

Download New Code at Runtime

T1407

ioc	pid	Process
/data/data/blue.kygz.xyzlc/108classes.dex	4280	blue.kygz.xyzlc
/data/user/0/blue.kygz.xyzlc/app_ttmp/t.jar	4280	blue.kygz.xyzlc
/data/data/blue.kygz.xyzlc/108classes.dex	4366	/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/data/blue.kygz.xyzlc/108classes.dex --output-vdex-fd=46 --oat-fd=57 --oat-location=/data/data/blue.kygz.xyzlc/oat/x86/108classes.odex --compiler-filter=quicken --class-loader-context=&
/data/data/blue.kygz.xyzlc/108classes.dex	4280	blue.kygz.xyzlc

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

Security Software Discovery
T1418.001

Queries information about active data network 1 TTPs 1 IoCs

discovery

System Network Connections Discovery

T1421

description	ioc	Process
Framework service call	android.net.IConnectivityManager.getActiveNetworkInfo	blue.kygz.xyzlc

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	blue.kygz.xyzlc

Requests dangerous framework permissions 4 IoCs

description	ioc
Allows an app to access approximate location.	android.permission.ACCESS_COARSE_LOCATION
Allows an app to access precise location.	android.permission.ACCESS_FINE_LOCATION
Allows an application to read from external storage.	android.permission.READ_EXTERNAL_STORAGE
Allows an application to write to external storage.	android.permission.WRITE_EXTERNAL_STORAGE

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	blue.kygz.xyzlc

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

impact

Data Encrypted for Impact

T1471

description	ioc	Process
Framework API call	javax.crypto.Cipher.doFinal	blue.kygz.xyzlc

Checks CPU information 2 TTPs 1 IoCs

System Checks

T1633.001

System Information Discovery

T1426

description	ioc	Process
File opened for read	/proc/cpuinfo	blue.kygz.xyzlc

Checks memory information 2 TTPs 1 IoCs

System Checks

T1633.001

System Information Discovery

T1426

description	ioc	Process
File opened for read	/proc/meminfo	blue.kygz.xyzlc

blue.kygz.xyzlc
1⤵
- Removes its main activity from the application launcher
- Checks Android system properties for emulator presence.
- Loads dropped Dex/Jar
- Queries information about active data network
- Queries the mobile country code (MCC)
- 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
PID:4280
- /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/data/blue.kygz.xyzlc/108classes.dex --output-vdex-fd=46 --oat-fd=57 --oat-location=/data/data/blue.kygz.xyzlc/oat/x86/108classes.odex --compiler-filter=quicken --class-loader-context=&
  2⤵
  - Loads dropped Dex/Jar
  PID:4366

Network

MITRE ATT&CK Mobile v15

Initial Access

Execution

Persistence

Event Triggered Execution

T1624

Broadcast Receivers

T1624.001

Privilege Escalation

Defense Evasion

Download New Code at Runtime

T1407

Hide Artifacts

T1628

Suppress Application Icon

T1628.001

Virtualization/Sandbox Evasion

T1633

System Checks

T1633.001

Credential Access

Discovery

Software Discovery

T1418

Security Software Discovery

T1418.001

System Information Discovery

T1426

System Network Configuration Discovery

T1422

System Network Connections Discovery

T1421

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Data Encrypted for Impact

T1471

Replay Monitor

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Downloads

108classes.dex

Path /data/data/blue.kygz.xyzlc/108classes.dex
Size 40KB
SHA256 f9cc117bb6368307eac084e06c726db5b0100248573cff014ec09319a243045a
MD5 da60aa3b5c68f3487a9d10df182b5248
SHA1 3e5894725f064a324cbafe48d6e45bb8faa3ae1e
SHA512 83baf5fa8a534c918cfc417f871d01c0dd3c8866011719b120bec16471ccac11baeacd9d97ae1ce40c62807af109394691cb9eaab798a4d505a06d826bc308bc
SSDEEP 768:lgDH1H1T1RZNchBNFCYcKjZY6aCKKNEtlx:kVVR2LCYc2nKSE
MD5 SHA1 SHA512 SSDEEP

Submit Download

108classes.dex

Path /data/data/blue.kygz.xyzlc/108classes.dex
Size 40KB
SHA256 2d7ce9401dc6eeb8c46ea093f98f082d618b2440dffcefc7a0c735f49bce3f39
MD5 32930818cfb9ba18b8c48a6cee1a66c0
SHA1 ed600963271d37ebce5fa22602922b9c73e4b9e5
SHA512 3b43570072bb0df231e0bc083639dd11ed1f7f0bb473288efc02abf569df180ba1cf20dafc9c1dbb0617059537365ea3c316b2b11362a4d7081e67934bb85244
SSDEEP 768:lgDH1H1eFT+OFrgFhGALCYcKjZY6aCKKNEtlx:kVVZ9CYc2nKSE
MD5 SHA1 SHA512 SSDEEP

Download

t.jar.cur.prof

Path /data/data/blue.kygz.xyzlc/app_ttmp/oat/t.jar.cur.prof
Size 417B
SHA256 e2bb79250f77062cc2ca816d85f74ffb36295f3a19b83179d4cdb812c14d3040
MD5 da6f4ff14d17ebf465292fd9e60d8043
SHA1 bd59168cd0ba9249f0616bf7330ea45b88b544e4
SHA512 8ad157960b83eaed4b74cb1c4adfc30774c9d152e2acb041332a66a0991da73f15e2b6416c726909804f6cad551d586615c16960e463ddfae26102653a492d7f
MD5 SHA1 SHA512

Submit Download

t.jar

Path /data/data/blue.kygz.xyzlc/app_ttmp/t.jar
Size 245KB
SHA256 5e68f3531088064093d2f7db6b910e5d2c1c1d36af8a41c6e3f5d33b5497ba40
MD5 a4fa004c442c1b1f9d03c680472abea9
SHA1 150906f8721b781c828ff829b898be19b860bc9c
SHA512 121c8a160aab88245322ed4359dcf4fb666fceaa3ed815a968e294ac6fe990ae850221efad413acbbc741f433e2db3e905b6176594200c435754efbdc48bbfca
SSDEEP 6144:oFp0pdjLSFzyXkg02kTU0wAEY5Qhc1sK1735O:oFpodjS28USEYa+k
MD5 SHA1 SHA512 SSDEEP

Submit Download

blue.kygz.xyzlcb

Path /data/data/blue.kygz.xyzlc/databases/blue.kygz.xyzlcb
Size 4KB
SHA256 0a8ffb6b327963558716e87db8946016d143e39f895fa1b43e95ba7032ce2514
MD5 f2b4b0190b9f384ca885f0c8c9b14700
SHA1 934ff2646757b5b6e7f20f6a0aa76c7f995d9361
SHA512 ec12685fc0d60526eed4d38820aad95611f3e93ae372be5a57142d8e8a1ba17e6e5dfe381a4e1365dddc0b363c9c40daaffdc1245bd515fddac69bf1abacd7f1
MD5 SHA1 SHA512

Submit Download

blue.kygz.xyzlcb-journal

Path /data/data/blue.kygz.xyzlc/databases/blue.kygz.xyzlcb-journal
Size 512B
SHA256 3f8633fea66cac9aaf590765684c6172ea8e31280e63611ceb9ea5944852f5cc
MD5 2e6e8497934c4cc07ec1de04344c8e40
SHA1 e63c78b2a854d3602cec6c5e9b734129d9fc7367
SHA512 9706dbd565a6429ffabfb9fa347fe348ddf0169695ca2428494323b3fd41234c5af3bc70bc2ead2158b2daf52fce23ca08b6630b018528f1d5cd5f98998606a8
MD5 SHA1 SHA512

Submit Download

blue.kygz.xyzlcb-shm

Path /data/data/blue.kygz.xyzlc/databases/blue.kygz.xyzlcb-shm
Size 32KB
SHA256 c35020473aed1b4642cd726cad727b63fff2824ad68cedd7ffb73c7cbd890479
MD5 bb7df04e1b0a2570657527a7e108ae23
SHA1 5188431849b4613152fd7bdba6a3ff0a4fd6424b
SHA512 768007e06b0cd9e62d50f458b9435c6dda0a6d272f0b15550f97c478394b743331c3a9c9236e09ab5b9cb3b423b2320a5d66eb3c7068db9ea37891ca40e47012
SSDEEP 3::
MD5 SHA1 SHA512 SSDEEP

Submit Download

blue.kygz.xyzlcb-wal

Path /data/data/blue.kygz.xyzlc/databases/blue.kygz.xyzlcb-wal
Size 92KB
SHA256 2d547d60a5040c0f2156d1af9ae257ab4c4931843a8191d77d480a95df3db43e
MD5 055323630b9cbecfbc7f82e9530bf824
SHA1 a94b39bf87eb3efd06ed5be50d42ee507a146c40
SHA512 4c3e5d6f7aa53831f587d74a399de30e070c11b90a21bc244ac008be291c4ed937614c71621b756d339fd5536dd81a2ccf713cbaacbaca0d6ecea1298668fc5f
SSDEEP 96:0Q160Pqna13ti3H4mtqb9brqborIqb5cQsmtqbxPFPD+Od:0Q1VqM3aokR1qS
MD5 SHA1 SHA512 SSDEEP

Submit Download

t.jar

Path /data/user/0/blue.kygz.xyzlc/app_ttmp/t.jar
Size 520KB
SHA256 a79da805fb30cf928952881382e90990411dbdf3d798689b8f11bdff30431def
MD5 b12e59de2d05abb2e1fab5888aa622ce
SHA1 3314d766a8b1b8abc671651a709ace1fc412d90f
SHA512 398bbfb55895db3a9282aef307ed2600b01d5d141a8405773076f617ad2f9ce8aa2d904f30eb41fbefff736fe0f82b85eddfd9ded3086188ba8db82429e08444
SSDEEP 6144:GzI9aCVFUzYHoIQkERklmKRflznOmkuscHgUqRwcJn9Ny6bWPHg85k1A9REwNok7:kKbZ6RfWdamtsHUkwcJi5k2HZNgZS5
MD5 SHA1 SHA512 SSDEEP

Download

main.apk

Path /storage/emulated/0/Download/main.apk
Size 545KB
SHA256 23329aeb0775c7b8d8faa275e17d211155c004289b7692509f82ab15996a42fb
MD5 0bb49620423a34a3dc4dd68639c9598a
SHA1 c9501a05eba9cec781f362f689319fc328de1abf
SHA512 eb56156e4e406b0a9036ca7187eb0dd64e61d8250845489218eccd0a2c6fe13af79cff5377b84809b0b2a9ef955e31046bc3c40f79ca5b4e19922473a5a34ac7
SSDEEP 12288:4bZzIDlHLd6QJIlbyxZWF82lolp47bxi6Oa9Sxazz:WZzIDlrAUja82lolpiQ6Hn
MD5 SHA1 SHA512 SSDEEP

Submit Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Mobile v15

Replay Monitor

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Downloads