octo | 846a04a5a04dad7129abe56d82b0578d4e2af6d6f73cfdf9de364c001d00c24d

Resubmissions

25-09-2023 22:51

230925-2ssm5adg99 10

25-09-2023 22:50

230925-2skyaacf3s 7

25-09-2023 22:49

230925-2rsxhacf2v 7

25-09-2023 19:47

230925-yhh46ace26 10

Analysis

max time kernel
3454267s
max time network
134s
platform
android_x86
resource
android-x86-arm-20230831-en
submitted
25-09-2023 19:47

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General

Target

ChromeUpdate.apk
Size

1.4MB
MD5

e8663d7b3eec9509ed49d5a85d0c39d1
SHA1

af654776384ece12c2274ae39acfebb6cc39f639
SHA256

846a04a5a04dad7129abe56d82b0578d4e2af6d6f73cfdf9de364c001d00c24d
SHA512

827f1c2de44bfc0c935f10223d93711ae592377f5c7ba4f9daba64f2d90f911f4f1a65990211a2b8e6a151d08c5fc840d6e2d8c26b6031d40f79c8963278b053
SSDEEP

24576:I+ldHt80bCRpsURse2h2q6oFU9Leazuoq/7t7gD09gFnCHzS+cNfS0:IYdH2aURQ2ZoALeAu1REw9fHO+cr

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://f2kic1nam25n81k.cc/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.findAccessibilityNodeInfosByViewId	com.riverfront8
Framework service call	android.accessibilityservice.IAccessibilityServiceConnection.findAccessibilityNodeInfoByAccessibilityId	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

4162 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
4162	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	4192	/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	4162	com.riverfront8
/data/user/0/com.riverfront8/cache/ngzvnyttctwi	4162	com.riverfront8
/data/user/0/com.riverfront8/cache/ngzvnyttctwi	4162	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:4162
- /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:4192

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
472B

MD5
0eef9a7c354b85836dde3cfac1ae660a

SHA1
d5e6c6f31ff422da5b6fa8e81d72686e4d19bf6f

SHA256
284d85ec7684fbc716370c365ea96abef78dd66d79507d971c18937d2d703205

SHA512
4fee7d5c50bee0e72163e195f7a3eeb8ccf73e0171ab59c869f413d253b0ec99d8483544321bf2cabb30d9a29f5d4308cfaf87032335ffab292ec9f288086269

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
3d902d3468259a5dfb10e74da4d2e71f

SHA1
ee1380e2020153c5040a417418b147a63f8a026c

SHA256
0d10c62b1913e56f4be7f77165cc2be9628706a5714165c4411f1870c0ade4d9

SHA512
4c554a31d3767b32389b0986e13ffcd661bb4d0eff01ef0acf1adc299147d7c37ae7f2b7c3704cfe515748759b1ab51f51c5c009762c8db4f291993904bfa85a

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

Filesize
54B

MD5
1b7ae6a8eaa8e22d87b349611b64f1a7

SHA1
2fd0d03462b0f8d07024d7fe033a14eb3000f21b

SHA256
4313ac784f47b2db49c1ecbe77db966eb6acd510ce41380f4129e78f0c3842a6

SHA512
4847ed8757c19b8f2aabbdcef5f947bf8fe559c31ed4243435e58d498d797ba54a48910d654061d8d3a4d4f26b58f9ff4c3c7b7804085ea1dcde9b3dc75a0dd9

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

Filesize
63B

MD5
db42afe8eaaed4779f128a3dbf9e0888

SHA1
0d901185b44e91bf4c06c090b6bb5e7dfe2384fa

SHA256
5f6cd00df85c285298c659e62c54908f926350e907737a7d23cde44045288275

SHA512
6a5561f049e3e596bbb6103e13ac16d79fe6123860cc37c3339820ad085cea9d64cd7e563889dbed86081fee499bd616e02000660c54d52312aada71848d649b

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

Filesize
423B

MD5
1c3ec56568d8aa96ce369fc9270dc85b

SHA1
d49bd1df864786c3c3faeb3a8e13074b9a8edd19

SHA256
7bc908cdcd89628a66d32f75d46c26e3689576e3c9e1db0785e6d02f022b3756

SHA512
e0aeb261e67e827f50fb39973fb56f0100016ebea0530e9aca014d4f0aaf72d8d00c343928cacd4cc846e969088bcbac5f730c003d92f4783f4cd017e89eccf8

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