octo | f289b4cf6ce9e3be9df1136a91c06a5eadcf2fdd7a5fb440330c1e3657b39780

Resubmissions

27-09-2023 04:24

230927-e1rdpsff41 10

27-09-2023 02:17

230927-cq4vyage88 10

Analysis

max time kernel
3572131s
max time network
308s
platform
android_x86
resource
android-x86-arm-20230831-en
submitted
27-09-2023 04:24

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General

Target

846a04a5a04dad7129abe56d82b0578d4e2af6d6f73cfdf9de364c001d00c24d.apk

Score

10^/10

octo banker evasion infostealer ransomware rat stealth trojan

Malware Config

Extracted

Family

octo

https://zaglefolki1.info/MTU2OWE0NzJjNGY5/

https://passajire555.live/MTU2OWE0NzJjNGY5/

https://majestike8ca.top/MTU2OWE0NzJjNGY5/

https://jikugac818v.vip/MTU2OWE0NzJjNGY5/

https://cleverk21da912mca.live/MTU2OWE0NzJjNGY5/

https://zazarazgok7215vor1.pro/MTU2OWE0NzJjNGY5/

https://juf18ki1ca15ca1la.info/MTU2OWE0NzJjNGY5/

AES_key

Signatures

Octo
Octo is a banking malware with remote access capabilities first seen in April 2022.
banker trojan infostealer rat octo

Octo payload 3 IoCs

Processes:

resource	yara_rule
/data/data/com.riverfront8/cache/ngzvnyttctwi	family_octo
/data/user/0/com.riverfront8/cache/ngzvnyttctwi	family_octo
/data/user/0/com.riverfront8/cache/ngzvnyttctwi	family_octo

Makes use of the framework's Accessibility service. 2 IoCs

Processes:

com.riverfront8

description	ioc	process
Framework service call	android.accessibilityservice.IAccessibilityServiceConnection.findAccessibilityNodeInfoByAccessibilityId	com.riverfront8
Framework service call	android.accessibilityservice.IAccessibilityServiceConnection.findAccessibilityNodeInfosByViewId	com.riverfront8

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.riverfront8

description ioc process

Framework service call android.content.pm.IPackageManager.getInstalledApplications com.riverfront8
Removes its main activity from the application launcher 1 IoCs
stealth trojan

Processes:

com.riverfront8

pid process

4171 com.riverfront8
Acquires the wake lock. 1 IoCs

Processes:

com.riverfront8

description ioc process

Framework service call android.os.IPowerManager.acquireWakeLock com.riverfront8

description	ioc	process
Framework service call	android.content.pm.IPackageManager.getInstalledApplications	com.riverfront8

pid	process
4171	com.riverfront8

description	ioc	process
Framework service call	android.os.IPowerManager.acquireWakeLock	com.riverfront8

Loads dropped Dex/Jar 4 IoCs

Runs executable file dropped to the device during analysis.

Processes:

/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.riverfront8/app_DynamicOptDex/HfoGUZM.json --output-vdex-fd=41 --oat-fd=42 --oat-location=/data/user/0/com.riverfront8/app_DynamicOptDex/oat/x86/HfoGUZM.odex --compiler-filter=quicken --class-loader-context=&com.riverfront8

ioc	pid	process
/data/user/0/com.riverfront8/app_DynamicOptDex/HfoGUZM.json	4200	/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.riverfront8/app_DynamicOptDex/HfoGUZM.json --output-vdex-fd=41 --oat-fd=42 --oat-location=/data/user/0/com.riverfront8/app_DynamicOptDex/oat/x86/HfoGUZM.odex --compiler-filter=quicken --class-loader-context=&
/data/user/0/com.riverfront8/app_DynamicOptDex/HfoGUZM.json	4171	com.riverfront8
/data/user/0/com.riverfront8/cache/ngzvnyttctwi	4171	com.riverfront8
/data/user/0/com.riverfront8/cache/ngzvnyttctwi	4171	com.riverfront8

Reads information about phone network operator.
Requests disabling of battery optimizations (often used to enable hiding in the background). 1 IoCs
evasion

Processes:

com.riverfront8

description ioc process

Intent action android.settings.REQUEST_IGNORE_BATTERY_OPTIMIZATIONS com.riverfront8
Removes a system notification. 1 IoCs
evasion

Processes:

com.riverfront8

description ioc process

Framework service call android.app.INotificationManager.cancelNotificationWithTag com.riverfront8
Uses Crypto APIs (Might try to encrypt user data). 1 IoCs
ransomware

Processes:

com.riverfront8

description ioc process

Framework API call javax.crypto.Cipher.doFinal com.riverfront8

description	ioc	process
Intent action	android.settings.REQUEST_IGNORE_BATTERY_OPTIMIZATIONS	com.riverfront8

description	ioc	process
Framework service call	android.app.INotificationManager.cancelNotificationWithTag	com.riverfront8

description	ioc	process
Framework API call	javax.crypto.Cipher.doFinal	com.riverfront8

com.riverfront8
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).
- Removes its main activity from the application launcher
- Acquires the wake lock.
- Loads dropped Dex/Jar
- Requests disabling of battery optimizations (often used to enable hiding in the background).
- Removes a system notification.
- Uses Crypto APIs (Might try to encrypt user data).
PID:4171
- /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.riverfront8/app_DynamicOptDex/HfoGUZM.json --output-vdex-fd=41 --oat-fd=42 --oat-location=/data/user/0/com.riverfront8/app_DynamicOptDex/oat/x86/HfoGUZM.odex --compiler-filter=quicken --class-loader-context=&
  2⤵
  - Loads dropped Dex/Jar
  PID:4200

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

/data/data/com.riverfront8/.qcom.riverfront8

Filesize
48B

MD5
046a414913add6f5bb60072c7db819b6

SHA1
451ee4f6809260aec622d772fd329c7d0297a842

SHA256
b66c1320cb063a1d391c94273572ea6edae76c8c8b0a07f8d75c88686f0df72a

SHA512
4e6355f3051ed5e811ab030abde1f5be7f5e1cf33be99cd08477e9b6c015deb1d8bd75a09fb9c7176b8511c5ad0a67abc0902a3531e97564ccb6afc57496a47c

Download Submit
/data/data/com.riverfront8/app_DynamicOptDex/HfoGUZM.json

Filesize
2KB

MD5
f9d7541e53b3da21b07114b994c5574d

SHA1
0dceb9f2b238c417f877ce2c5d659c342a55cdde

SHA256
5938a3b4d175985478b8bd2c7ec400fe969855493528ef982e511ca6cb4138ed

SHA512
00e2cc5c4368472fc9fa8b574b55b6c0e18b0a8accfacaa905c7be7844f6cd41ea88fdea35002bb6531e3706619d686434abcead6c672c994524dc51273070cf

Download Submit
/data/data/com.riverfront8/app_DynamicOptDex/HfoGUZM.json

Filesize
2KB

MD5
b3f54bdf5727697c33a0f7d3076987c7

SHA1
56477825c1b2731afa1a9b76ebb8c533075df827

SHA256
11c9f73978d5a9a12e89bfa4f3ac7c36fd9281438798e75f113cc5a6004cbfc3

SHA512
caa8f233e77b585f6d8cbb08384d974494edcb3705139e9b702a057eac66b9b03ba556c58d5340de6d30ecf64ea7d80dc7afda08b78de6a20e2de238e14d6c92

Download Submit
/data/data/com.riverfront8/cache/ngzvnyttctwi

Filesize
271KB

MD5
20efb40c46b088b3d7f833f6c3cfda07

SHA1
9e61943af7a5c19362385f4caf6c985bcc554995

SHA256
7eb7dde18db104be32b6da57e4fe59968d1e91bb22f6522586ad1f7a87411ffb

SHA512
af487b361a9d6aeddb865f3f32453b88c9a96698b3896957a37afd8c32f97b3d2420ac4476436dfa2173b1cb32da6724f115a30ae07ff1b6540c97f9958ab8ce

Download Submit
/data/data/com.riverfront8/cache/oat/ngzvnyttctwi.cur.prof

Filesize
454B

MD5
e7ff468552ae32fe6e96ccec490233d3

SHA1
9f37f54ce078aecc57acaf90a378329050904178

SHA256
2a9470937a7874fb54e3648fc0077d000cbc5e0e14025f073d172fdac22841bb

SHA512
5039830e10d1ed57d964d2e0306966a107b99261bfb400c61bd49d239d2677d1b552a08b71b54b34e8cb6b783697ac4c513dceeb96ca9acdc52f90d6fe10c9e9

Download Submit
/data/data/com.riverfront8/cache/oat/ngzvnyttctwi.cur.prof

Filesize
469B

MD5
af084019d9ce073df61261454c168deb

SHA1
91231688837650c6b479db83f50beb82cc827f6f

SHA256
f4b21aff1ca903200e6f6245cffc4980ca8c04fed790036013c09b93f3608f4b

SHA512
06179046df642c1384037bf6cea7f3feb62704373aabb980c0f31e930f63f71cf7f190628562a84c0192f488eb752740cbc0befe841bb9b4e1a6dd52ed6c3540

Download Submit
/data/data/com.riverfront8/kl.txt

Filesize
28B

MD5
6311c3fd15588bb5c126e6c28ff5fffe

SHA1
ce81d136fce31779f4dd62e20bdaf99c91e2fc57

SHA256
8b82f6032e29a2b5c96031a3630fb6173d12ff0295bc20bb21b877d08f0812d8

SHA512
2975fe2e94b6a8adc9cfc1a865ad113772b54572883a537b02a16dd2d029c0f7d9cca3b154fd849bdfe978e18b396bcf9fa6e67e7c61f92bdc089a29a9c355c6

Download Submit
/data/data/com.riverfront8/kl.txt

Filesize
230B

MD5
7fa0724704ebe836c7580cba9fb2d2bf

SHA1
a99c26bb0c96691ff79bc14724bbff99ac3fda1a

SHA256
ab69ce1ab4d4009fde9c29262b5dfb997c5a9283cd82ad4d73371b605feeda1e

SHA512
f2a22b1b61da68834a3b88af58eb75385400072b201b96ba9b8b645d8916211d66c6eb734d8eae3d16fe52ac15646ca02f1ae42181068252e3feae6c3cc2985c

Download Submit
/data/data/com.riverfront8/kl.txt

Filesize
63B

MD5
9f203df8906dffc95f4ce6b680035a3c

SHA1
5fe3d263799dbb5757acc616d507611ecfbb59d4

SHA256
9f5cdfebd6c95ead633025ff97f36d71f8a6e68838c246774916c0353c902a84

SHA512
a7eddcec335c438c1d1d363fee60329a69204a39c01b5c68be5fa31c3480444fb6c6e5605ab44894cdc669eb288ba0f923619240f36017579e7e1502cefbd704

Download Submit
/data/data/com.riverfront8/kl.txt

Filesize
54B

MD5
7de6bd1ca7aab0eed516de22ace5fca4

SHA1
2e3162161cc364e15d5ba2368e2ab1e84bad7d4d

SHA256
eabc0c6ed311f67a0a3d3a1cd1554b9a96ecd5c6d0a771d5252fa80e2057d219

SHA512
50e51f7d26d6a152e778fa07bcc98ceb086868844b05be51afea766356eb4bb05e7b9f3a4f9e78c1b40b9bda32563bf623e034b1c5295fefe58919970e73e509

Download Submit
/data/data/com.riverfront8/kl.txt

Filesize
423B

MD5
37b033a5eedb5127ee38e49b87a0d762

SHA1
b49b04c35b30684c118fd72eb2b3b868166aa4c2

SHA256
17e111a1f7a3c42e10b7b9bf6a5add27ef5bba4b179a698ef983fc6a6193ff98

SHA512
58d5ce98274de49e11e9c26216bc229dea0c77c31dae2075b8c6cbcde9fada2193eb30da3a5b472c8921cc2ce71b18e858adba1026383785860378af140d1e55

Download Submit
/data/user/0/com.riverfront8/app_DynamicOptDex/HfoGUZM.json

Filesize
6KB

MD5
5d64d0e86c763406334f7a91e9776e6c

SHA1
0198b2c619bdfae3014ce35834504fd8526c245b

SHA256
92a1cdac4eab99a2ca490d942dd1b71fba264f847504267676c1b2757fb03ebe

SHA512
32adff32c7006bb31125699998bd2b7fb1fa96770bc2257f181742f2bc767872d70ce8578e74d7233c40e52d3f128473569dbc7d913261e50fe0ea53ffe04469

Download Submit
/data/user/0/com.riverfront8/app_DynamicOptDex/HfoGUZM.json

Filesize
6KB

MD5
6a77912b650e56c029a71f6865345df1

SHA1
f87804085c6f813bbb506e0a0e26f60b494383fb

SHA256
d1ea67963a8e3dc3e34ed70537cbd2c8c8a5971ef27091831c88be1fda02671f

SHA512
5cf7f167ed81172fc9884bf45b48be84f45499bd3bfba47615695ad5ca53f5f6f2fc2f8532f4811d444f6179f9cea51148211ad108cf1ab5e88a92c11ad8c68e

Download Submit
/data/user/0/com.riverfront8/cache/ngzvnyttctwi

Filesize
271KB

MD5
20efb40c46b088b3d7f833f6c3cfda07

SHA1
9e61943af7a5c19362385f4caf6c985bcc554995

SHA256
7eb7dde18db104be32b6da57e4fe59968d1e91bb22f6522586ad1f7a87411ffb

SHA512
af487b361a9d6aeddb865f3f32453b88c9a96698b3896957a37afd8c32f97b3d2420ac4476436dfa2173b1cb32da6724f115a30ae07ff1b6540c97f9958ab8ce

Download Submit
/data/user/0/com.riverfront8/cache/ngzvnyttctwi

Filesize
271KB

MD5
20efb40c46b088b3d7f833f6c3cfda07

SHA1
9e61943af7a5c19362385f4caf6c985bcc554995

SHA256
7eb7dde18db104be32b6da57e4fe59968d1e91bb22f6522586ad1f7a87411ffb

SHA512
af487b361a9d6aeddb865f3f32453b88c9a96698b3896957a37afd8c32f97b3d2420ac4476436dfa2173b1cb32da6724f115a30ae07ff1b6540c97f9958ab8ce

Download Submit