ermac | 67ea3d38bed6ccdaeb3d929edd5afed9b1563d284a291f96e5bfa1c440e1a6dc

Resubmissions

07-11-2022 15:28

221107-swmrlsgadl 10

27-04-2022 09:17

220427-k816rseadp 8

Analysis

max time kernel
1387800s
max time network
166s
platform
android_x64
resource
android-x64-arm64-20220823-en
resource tags

androidarch:armarch:arm64arch:x64arch:x86image:android-x64-arm64-20220823-enlocale:en-usos:android-11-x64system
submitted
07-11-2022 15:28

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General

Target

easy.apk
Size

4.5MB
MD5

2cb58ccb6461e4fe22bb22c0a5f78f9e
SHA1

c3b7edb3536045d3b81ad53c10405f04cf63bb3b
SHA256

67ea3d38bed6ccdaeb3d929edd5afed9b1563d284a291f96e5bfa1c440e1a6dc
SHA512

7245bebb6d9ef67469c6e7ece51f7fd8c74642cf2be7dd3a6519fc1c2ac7d196628db6f773ab939cb4386c180546dfdf5be930e0a8e3981d066a62b25768a913
SSDEEP

98304:X9Aa3ecc0RLn60fR/1pL2LtrTCqcXuJt+jMWdJQ:XCOx2tc5MWdJQ

Score

10^/10

ermac banker evasion infostealer ransomware stealth trojan

Malware Config

Extracted

Family

ermac

http://194.26.29.28:3434

AES_key

Signatures

Ermac
An Android banking trojan first seen in July 2021.
banker trojan infostealer ermac

Ermac2 payload 1 IoCs

resource	yara_rule
behavioral3/memory/4400-0.dex	family_ermac2

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

description	ioc	Process
Framework service call	android.accessibilityservice.IAccessibilityServiceConnection.findAccessibilityNodeInfoByAccessibilityId	com.blyyglzra.gcptyqoak
Framework service call	android.accessibilityservice.IAccessibilityServiceConnection.findAccessibilityNodeInfosByViewId	com.blyyglzra.gcptyqoak
Framework service call	android.accessibilityservice.IAccessibilityServiceConnection.findAccessibilityNodeInfosByText	com.blyyglzra.gcptyqoak

Removes its main activity from the application launcher 1 IoCs

stealth trojan

pid	Process
4400	com.blyyglzra.gcptyqoak

Acquires the wake lock. 1 IoCs

description	ioc	Process
Framework service call	android.os.IPowerManager.acquireWakeLock	com.blyyglzra.gcptyqoak

Loads dropped Dex/Jar 1 IoCs

Runs executable file dropped to the device during analysis.

ioc	pid	Process
/data/user/0/com.blyyglzra.gcptyqoak/tyjjghkggi/dGd97dgghohgy8f/base.apk.heUUyjG1.oht	4400	com.blyyglzra.gcptyqoak

Queries the unique device ID (IMEI, MEID, IMSI).
Reads information about phone network operator.

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

evasion

description	ioc	Process
Intent action	android.settings.REQUEST_IGNORE_BATTERY_OPTIMIZATIONS	com.blyyglzra.gcptyqoak

Removes a system notification. 1 IoCs

evasion

description	ioc	Process
Framework service call	android.app.INotificationManager.cancelNotificationWithTag	com.blyyglzra.gcptyqoak

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

ransomware

description	ioc	Process
Framework API call	javax.crypto.Cipher.doFinal	com.blyyglzra.gcptyqoak

com.blyyglzra.gcptyqoak
1⤵
- Makes use of the framework's Accessibility service.
- 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:4400

Network

MITRE ATT&CK Matrix

Replay Monitor

Loading Replay Monitor...

Downloads

/data/user/0/com.blyyglzra.gcptyqoak/app_webview/Default/GPUCache/index

Filesize
48B

MD5
6d7d499960179766cd4261d12dacc411

SHA1
e6f8553b0015e12b23cc551afe98763f3b1c9bed

SHA256
c96ac03cfdbc6f4c1bdcdf764f1a6573f852e7aae5ef405969516b93ed271182

SHA512
6526c668477a01a850b8757b77dd3e7be27ad1991f5cf777685efcb03a21f31b71f6eae00f326931599baae4b16360e33e3d0f2894f1b2c1753391df02a14547

Download Submit
/data/user/0/com.blyyglzra.gcptyqoak/app_webview/Default/GPUCache/index-dir/temp-index

Filesize
96B

MD5
57f71074d8a7a2b41a5b1d4431e5c86c

SHA1
27e905dd774bfb00b79390c65fd10d588f7eb4f2

SHA256
c107d4fde5416bd4193c6c3fd60f1cede1f61ceaefe80c60df69d4fffec7c3ac

SHA512
9a20abbeb7bcd6ebed49f812690cb6269cb1db2d69331c9f3cad4bfd075fbacbe2e9eaa50447e5c28d7ae4e78a50a370b93757395d341c4bc5435fe6003e0945

Download Submit
/data/user/0/com.blyyglzra.gcptyqoak/app_webview/Default/Session Storage/000001.dbtmp

Filesize
16B

MD5
46295cac801e5d4857d09837238a6394

SHA1
44e0fa1b517dbf802b18faf0785eeea6ac51594b

SHA256
0f1bad70c7bd1e0a69562853ec529355462fcd0423263a3d39d6d0d70b780443

SHA512
8969402593f927350e2ceb4b5bc2a277f3754697c1961e3d6237da322257fbab42909e1a742e22223447f3a4805f8d8ef525432a7c3515a549e984d3eff72b23

Download Submit
/data/user/0/com.blyyglzra.gcptyqoak/app_webview/Default/Session Storage/000003.log

Filesize
61B

MD5
9f7eadc15e13d0608b4e4d590499ae2e

SHA1
afb27f5c20b117031328e12dd3111a7681ff8db5

SHA256
5c3a5b578ab9fe853ead7040bc161929ea4f6902073ba2b8bb84487622b98923

SHA512
88455784c705f565c70fa0a549c54e2492976e14643e9dd0a8e58c560d003914313df483f096bd33ec718aeec7667b8de063a73627aa3436ba6e7e562e565b3f

Download Submit
/data/user/0/com.blyyglzra.gcptyqoak/app_webview/Default/Session Storage/LOG

Filesize
135B

MD5
819aa142ea8e1e2f8460ebd58b9c4b7e

SHA1
a048bd272fb8ebd2facd36f5461cb3d3c7f0254d

SHA256
d99eed944034db6e40365425d9656c59d45de70e7b09730797c07a771bb91da5

SHA512
dcb5fb9748684b1252012ef227fa98b188f26f90f8aefbd430799437ec932748c422053625c349ca8f5cc30cf3a13168ed79a0e7874da46d2926477ff3e8f9b7

Download Submit
/data/user/0/com.blyyglzra.gcptyqoak/app_webview/Default/Session Storage/MANIFEST-000001

Filesize
41B

MD5
5af87dfd673ba2115e2fcf5cfdb727ab

SHA1
d5b5bbf396dc291274584ef71f444f420b6056f1

SHA256
f9d31b278e215eb0d0e9cd709edfa037e828f36214ab7906f612160fead4b2b4

SHA512
de34583a7dbafe4dd0dc0601e8f6906b9bc6a00c56c9323561204f77abbc0dc9007c480ffe4092ff2f194d54616caf50aecbd4a1e9583cae0c76ad6dd7c2375b

Download Submit
/data/user/0/com.blyyglzra.gcptyqoak/app_webview/Default/Web Data

Filesize
120KB

MD5
a48cd9324b1f8754b07f00d863b840f3

SHA1
11c6614775b35a58f440971dfc87c8aaac6d6173

SHA256
8859a216183793485d4699bf69d7ed96904679834188d07b9a70424d47eb1420

SHA512
35fa712f0af4a5eeed7e00e4e59ed5027dc6609d268462fe79d92043be9ae0c5961ce9e1d2f64b1a196c9b6aa6242b8b83817b3ee4c1058596c58a99c45478b1

Download Submit
/data/user/0/com.blyyglzra.gcptyqoak/app_webview/Default/Web Data-journal

Filesize
2KB

MD5
24cf1ec49633effc2a81eb4a70e3225f

SHA1
091c8ac4dbffd048431a5f265e544f2f87c9cf45

SHA256
23e65b3a9aa0387bf36876df19fbe98a4f25c1942d3f2b9bfc0b34c02ed8c137

SHA512
d51552a051a575f9f8ac58a41fbdeedc8c8f1913eca54c77e1821a4214a47d5ac1c89afdd5f06ea3d1daabd004fb25f0bd7e92158f5be00c115567c9850090d9

Download Submit
/data/user/0/com.blyyglzra.gcptyqoak/app_webview/webview_data.lock

Filesize
29B

MD5
610e64ba9f5ab094f09cdc4cfb366c59

SHA1
4830b31acbe08bdfe9836cdce30890c97c27efc9

SHA256
0ed420c478d387a5d5c5c0a7ed1b9268cbbcc0c15990553a0554a88998561695

SHA512
c1d6f24e1836ec4eb8be80406ff5ee454b17305f1cedf76f523ab37aa72558bd3e040da1744f4a5e7845ac0c573f1a6cf403d8dd3d97c2fa57d8e8537291a94f

Download Submit
/data/user/0/com.blyyglzra.gcptyqoak/cache/WebView/Crashpad/settings.dat

Filesize
40B

MD5
c24ae78c3bc807e4a514ae7ed52b4b06

SHA1
1d8bf3fe89eae223aa0c6e594ec903c600c21984

SHA256
dfa64ab1a8741e7e2b64492261d52459083e167f24c1c155a2d88f74f1ba71af

SHA512
f624a004f2b6084ddcb04a774862e4ab939f5481ac755d767161efdaf36174a0973095b81530d82c583fa61324fd1eedca0a4505e11e3be9283af98184aae7c6

Download Submit
/data/user/0/com.blyyglzra.gcptyqoak/cache/WebView/Default/HTTP Cache/Code Cache/js/index

Filesize
48B

MD5
6d7d499960179766cd4261d12dacc411

SHA1
e6f8553b0015e12b23cc551afe98763f3b1c9bed

SHA256
c96ac03cfdbc6f4c1bdcdf764f1a6573f852e7aae5ef405969516b93ed271182

SHA512
6526c668477a01a850b8757b77dd3e7be27ad1991f5cf777685efcb03a21f31b71f6eae00f326931599baae4b16360e33e3d0f2894f1b2c1753391df02a14547

Download Submit
/data/user/0/com.blyyglzra.gcptyqoak/cache/WebView/Default/HTTP Cache/Code Cache/js/index-dir/temp-index

Filesize
96B

MD5
5e8bfe0f17dbbac09a76933294f8d27a

SHA1
3dbc083fd8a7f7ce23d45ea491948fa419a57ad9

SHA256
34244d52dbb84b017ac9653ef93c0584c332f062f4af6139441442389843d664

SHA512
2c9e0cce98ddaa271dcb27bb5a83e97c352e02545838f43b368fbf135bcc84b3a8846ab764a69649d177c91acb6ce9b768258593cecbe23d9ba0de397aff851c

Download Submit
/data/user/0/com.blyyglzra.gcptyqoak/cache/WebView/Default/HTTP Cache/Code Cache/wasm/index

Filesize
48B

MD5
6d7d499960179766cd4261d12dacc411

SHA1
e6f8553b0015e12b23cc551afe98763f3b1c9bed

SHA256
c96ac03cfdbc6f4c1bdcdf764f1a6573f852e7aae5ef405969516b93ed271182

SHA512
6526c668477a01a850b8757b77dd3e7be27ad1991f5cf777685efcb03a21f31b71f6eae00f326931599baae4b16360e33e3d0f2894f1b2c1753391df02a14547

Download Submit
/data/user/0/com.blyyglzra.gcptyqoak/cache/WebView/Default/HTTP Cache/Code Cache/wasm/index-dir/temp-index

Filesize
96B

MD5
6eaa97f3bab181676e9aa250fe2a4202

SHA1
a3831898e219e5ffe6e5256a879f233b884c09cc

SHA256
71ff06c9175a3765215e7df1b308e914f97893cb19a138c5518467cb5f597810

SHA512
a44093721a0f00fceee79acb0b1118096c6f62c34b6aa70a58a2c197d42f5164f1954cf5e3afd0f823fd7f699c8e72b1b24b367f99eb6a5fb3f645cb3376fd3c

Download Submit
/data/user/0/com.blyyglzra.gcptyqoak/cache/WebView/font_unique_name_table.pb

Filesize
57KB

MD5
f080fa2a56ab5479d58063e5ea871447

SHA1
4b3fd57a98916fa5784305b76ba30af26b5253d9

SHA256
0aa374bc456330fd1b5daf18d25b4bb8e2df1998dfa85466f2c31843ff56e815

SHA512
8aee3186a95b389d39882620b7c4199a29aa50580aa98a381b2931a934de6406943c89d4d00ebeabff21e2b03b4a4adcc01e37e32a2335c4838be24bdbf61936

Download Submit
/data/user/0/com.blyyglzra.gcptyqoak/shared_prefs/WebViewChromiumPrefs.xml

Filesize
127B

MD5
97ccd9a2b2063143df56b6937f961ca4

SHA1
5e78a91ae5df289ce83443cb7d5589dd3504fb5d

SHA256
248ff7928128015b1cfe3e6517c8f9b8c9511bfb8c8baf44fc1370640eac61fd

SHA512
86c05a5bb3d7eedea390664796966e9e5a5bf846c85808da54407788a76b3ee25b91428242a1e76d8765bfe51e1ba3636617fbab6e7dbb39fcc433e07c3fcd3b

Download Submit
/data/user/0/com.blyyglzra.gcptyqoak/shared_prefs/multidex.version.xml

Filesize
307B

MD5
46018cb096be1dedc2c7f25c9c43f701

SHA1
29949a6b53d44ae5ee02ffb82015c49b3dcaf3ea

SHA256
bf7b34c795f9244472e5a56553255d82072c8cf994cedfb6faf0e40ec38426e7

SHA512
1f669ceea12fbd64027deb08bf28c2e4df56ca79cf0c032d375cfd0a3ac172b6e542fbb13867872604d8489b2ca05b68de02ce1deae892ebe42ca536e0b876ff

Download Submit
/data/user/0/com.blyyglzra.gcptyqoak/shared_prefs/settings.xml

Filesize
136B

MD5
4daf813392aa372d8c146e024f95496f

SHA1
f81fde61a7e98f538524e5ece6a5084116dc2d50

SHA256
12befdd7862a215128730c89b70053357721a91f7528a226a307c4824a6fe761

SHA512
0be7cfe74cff83c686828ca49e55f1939ab1a0a5ffedc4547b0633f87714531a95b6ce7a258fd283b97e8afed9c1a82b6ca2f7f3e222d3eccaea6e4f03f260d7

Download Submit
/data/user/0/com.blyyglzra.gcptyqoak/tyjjghkggi/dGd97dgghohgy8f/base.apk.heUUyjG1.oht

Filesize
1.4MB

MD5
9a7d633f75564ce5efa3b07fe0256742

SHA1
7069a052192c0f23309909d7ef2d831c0be628ed

SHA256
c9d6b21411d4e89cf0b140240c74a406bf1138075c7c47e07231ec3fd84385bd

SHA512
119bb85e808620b4ac977084e8b19b88e72ede53d3e06498ca8af3d2f6e8be50b00deea56d572a71ea92287d8622efe08c7566301d06d154f9f23ab617617638

Download Submit