ermac | f4ebdcef8643dbffe8de312cb47c1f94118e6481a4faf4166badfd98a0a9c5d3

Analysis

max time kernel
4203275s
max time network
164s
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
21/10/2022, 12:30

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General

Target

paypal.apk
Size

2.6MB
MD5

16e991d73049f1ef5b8f5fa0c075ef05
SHA1

79b5c686478c3db742666068d3835eb3409af32a
SHA256

f4ebdcef8643dbffe8de312cb47c1f94118e6481a4faf4166badfd98a0a9c5d3
SHA512

4b6709f86718a6348feb4dffbf9094594ae269b89a4ff7dac2c0d83f6320f46a3958711ad9c6e49121eedd0e47d5365d19275459653992366c62ce2d1643801e
SSDEEP

49152:Y/cThIEUoEPCM0FjUT8uD4f14CUnA6CKe8NbLDMR:YEFIdP9q9GTn9CctX8

Score

10^/10

ermac banker evasion infostealer ransomware stealth trojan

Malware Config

Extracted

Family

ermac

http://193.106.191.121:3434

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/4251-0.dex	family_ermac2

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

description	ioc	Process
Framework service call	android.accessibilityservice.IAccessibilityServiceConnection.findAccessibilityNodeInfoByAccessibilityId	com.baresucuvuzefa.feyi
Framework service call	android.accessibilityservice.IAccessibilityServiceConnection.findAccessibilityNodeInfosByViewId	com.baresucuvuzefa.feyi
Framework service call	android.accessibilityservice.IAccessibilityServiceConnection.findAccessibilityNodeInfosByText	com.baresucuvuzefa.feyi

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

banker

description	ioc	Process
Framework service call	android.content.pm.IPackageManager.getInstalledApplications	com.baresucuvuzefa.feyi

Removes its main activity from the application launcher 2 IoCs

stealth trojan

pid	Process
4251	com.baresucuvuzefa.feyi
4251	com.baresucuvuzefa.feyi

Acquires the wake lock. 1 IoCs

description	ioc	Process
Framework service call	android.os.IPowerManager.acquireWakeLock	com.baresucuvuzefa.feyi

Loads dropped Dex/Jar 1 IoCs

Runs executable file dropped to the device during analysis.

ioc	pid	Process
/data/user/0/com.baresucuvuzefa.feyi/app_DynamicOptDex/iRFFA.json	4251	com.baresucuvuzefa.feyi

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.baresucuvuzefa.feyi

Removes a system notification. 1 IoCs

evasion

description	ioc	Process
Framework service call	android.app.INotificationManager.cancelNotificationWithTag	com.baresucuvuzefa.feyi

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

ransomware

description	ioc	Process
Framework API call	javax.crypto.Cipher.doFinal	com.baresucuvuzefa.feyi

com.baresucuvuzefa.feyi
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:4251

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

/data/user/0/com.baresucuvuzefa.feyi/app_DynamicOptDex/iRFFA.json

Filesize
456KB

MD5
2d3729402d72914c1922d6c6f352afce

SHA1
ee2a7f3c481283d8d0d3347e729ec73099fe23f0

SHA256
9f191ea1bfd45d523ccc0b47ac0801563cbc20b3d5dcbf88498e40af45405b0f

SHA512
99187a1bed193295389ca7f8f9b8f219deb82ae3a61d44454fc6d9d252c8d4a5e27a873d2df084ffa44d5c8dad9addc8f3cf7caaf22a49914bcbbfd65474e14a

Download Submit
/data/user/0/com.baresucuvuzefa.feyi/app_DynamicOptDex/iRFFA.json

Filesize
899KB

MD5
3f25cf0fc65072d0ef786ccc02e6cab4

SHA1
68708446ab20f368a1d69bce6fffb28778673a23

SHA256
c7b16251b4df9f184578ec65e41e5a29eaac6f23f922b3428b420a3de6fbb24a

SHA512
6f080430ad94cd172190390ee6fed11b968910ed43e89a4b5602d1127eadbce93b26f6ee779f194d68ab38ee2abfdc19447520b329fe9128e7c4c165ea2938a9

Download Submit
/data/user/0/com.baresucuvuzefa.feyi/app_webview/Default/GPUCache/index

Filesize
48B

MD5
6d7d499960179766cd4261d12dacc411

SHA1
e6f8553b0015e12b23cc551afe98763f3b1c9bed

SHA256
c96ac03cfdbc6f4c1bdcdf764f1a6573f852e7aae5ef405969516b93ed271182

SHA512
6526c668477a01a850b8757b77dd3e7be27ad1991f5cf777685efcb03a21f31b71f6eae00f326931599baae4b16360e33e3d0f2894f1b2c1753391df02a14547

Download Submit
/data/user/0/com.baresucuvuzefa.feyi/app_webview/Default/GPUCache/index-dir/temp-index

Filesize
96B

MD5
07098e5d64a63de92db62c82ba504a0a

SHA1
552212294abcb36fe205bff284876c1077cb08a4

SHA256
e406e00c3941122a7bc5ba877b8074844fd6adf0dd5674d72dd289983bb20446

SHA512
bb3b03b7d064c6a3ed9ab452790a4e7b187644497dc210d2530a2ec9724152e83fb8102793d24122283338ff4a464ee1b40101fc5c292c210bc2586f59c83024

Download Submit
/data/user/0/com.baresucuvuzefa.feyi/app_webview/Default/Session Storage/000001.dbtmp

Filesize
16B

MD5
46295cac801e5d4857d09837238a6394

SHA1
44e0fa1b517dbf802b18faf0785eeea6ac51594b

SHA256
0f1bad70c7bd1e0a69562853ec529355462fcd0423263a3d39d6d0d70b780443

SHA512
8969402593f927350e2ceb4b5bc2a277f3754697c1961e3d6237da322257fbab42909e1a742e22223447f3a4805f8d8ef525432a7c3515a549e984d3eff72b23

Download Submit
/data/user/0/com.baresucuvuzefa.feyi/app_webview/Default/Session Storage/000003.log

Filesize
61B

MD5
9f7eadc15e13d0608b4e4d590499ae2e

SHA1
afb27f5c20b117031328e12dd3111a7681ff8db5

SHA256
5c3a5b578ab9fe853ead7040bc161929ea4f6902073ba2b8bb84487622b98923

SHA512
88455784c705f565c70fa0a549c54e2492976e14643e9dd0a8e58c560d003914313df483f096bd33ec718aeec7667b8de063a73627aa3436ba6e7e562e565b3f

Download Submit
/data/user/0/com.baresucuvuzefa.feyi/app_webview/Default/Session Storage/LOG

Filesize
135B

MD5
6d383fe470b2a0f2b09e1da112fc2e82

SHA1
9a36c683ce4f505e9deebe2f89035a7578b8937c

SHA256
6ce3471a29748d9611844611b2ddd658b7f53f2116636805fb8f0f38719b0b70

SHA512
14df89676abad145bc8eab0ee1f4e59faca60d459d1a24e798c116a53b73f6803226eefa56fe9275ab0beaf23bb0bf94ec8750407a206beb2afae1b8553f4490

Download Submit
/data/user/0/com.baresucuvuzefa.feyi/app_webview/Default/Session Storage/MANIFEST-000001

Filesize
41B

MD5
5af87dfd673ba2115e2fcf5cfdb727ab

SHA1
d5b5bbf396dc291274584ef71f444f420b6056f1

SHA256
f9d31b278e215eb0d0e9cd709edfa037e828f36214ab7906f612160fead4b2b4

SHA512
de34583a7dbafe4dd0dc0601e8f6906b9bc6a00c56c9323561204f77abbc0dc9007c480ffe4092ff2f194d54616caf50aecbd4a1e9583cae0c76ad6dd7c2375b

Download Submit
/data/user/0/com.baresucuvuzefa.feyi/app_webview/Default/Web Data

Filesize
120KB

MD5
a48cd9324b1f8754b07f00d863b840f3

SHA1
11c6614775b35a58f440971dfc87c8aaac6d6173

SHA256
8859a216183793485d4699bf69d7ed96904679834188d07b9a70424d47eb1420

SHA512
35fa712f0af4a5eeed7e00e4e59ed5027dc6609d268462fe79d92043be9ae0c5961ce9e1d2f64b1a196c9b6aa6242b8b83817b3ee4c1058596c58a99c45478b1

Download Submit
/data/user/0/com.baresucuvuzefa.feyi/app_webview/Default/Web Data-journal

Filesize
2KB

MD5
5ede9c48a8c74f7f07418ed944556fe0

SHA1
e81894b598eafd432a65e13de99d6f4e924d1f9f

SHA256
7692c9efe420ed0b2a49147370dd764be54fa5ef74dfcae5202472f58bd1f5c9

SHA512
c820bec1805e3364bfab4e79c0d0629b2055162dc39f524a4085e27c938d211c9cd5fd137898171ca881b932f9488dabd68dd0253cd00a23e76817dcf378a8dd

Download Submit
/data/user/0/com.baresucuvuzefa.feyi/app_webview/webview_data.lock

Filesize
29B

MD5
92588a4ae96405438cecb2d04d20dff7

SHA1
fcb19588f26078f3bb0118e5b571f11ed3b85347

SHA256
b7ad40c2fcece8812f320a2bec05071fc9806d538cd0221993b01dd26ddc988c

SHA512
071f8c64907443ba63ca00004d7be71e006c3075f6b6fa5c23ca3602f1fb4c7f21847e1afb7c725824785715cd7fcd9625de3d9f9e81b47fb7d27a60feef1252

Download Submit
/data/user/0/com.baresucuvuzefa.feyi/cache/WebView/Crashpad/settings.dat

Filesize
40B

MD5
58d51e2f3a34963bb879f922017b9bc9

SHA1
bea6c20f688b662f8f29a65d42248b54028e2c30

SHA256
ff359150c8bb13a7e0e246aba4931e607aa818ff08134936af7b717574bf23e6

SHA512
a5476df91cdfc650757442b7eedfcf49ae29665923b11140b141ba308f0db071c0ec1bf75f715f63afd218b8a536c62bf3cc06e5e890e60aa1046814c653ee59

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

Filesize
96B

MD5
8222851cd1e1939fb1f639f0ae931f99

SHA1
841f21d317e35a0d0455b57c026ab435508cec80

SHA256
3489b66729a95135c5c0eb3085a4b9f786b80893362848fae10f5c95633ef629

SHA512
63b48cc18908b4f2b7f0d292b268979cd34afde5257ebaab993b1bbfac1195c2a54d6b9de8c9e94e3514b3b2458e7665364ec614897074d54560a6d9099f7288

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

Filesize
96B

MD5
94734e8426df99859f8cfdfae11ef07d

SHA1
186d4c5ba4281b8472a50fb4f09dd7c253cab867

SHA256
d040afc6191f2e0280acfd56e5dbca9c36355f5d140edcbaadf013abb9c97b15

SHA512
fa25f4346041275506855a0388c9045d5fb98f9cedfd871409003faf727155ab15cd402c0d134fa3f80d5e3fe35c3c5c0d90778259eb59945cff327e54047874

Download Submit
/data/user/0/com.baresucuvuzefa.feyi/cache/WebView/font_unique_name_table.pb

Filesize
57KB

MD5
f080fa2a56ab5479d58063e5ea871447

SHA1
4b3fd57a98916fa5784305b76ba30af26b5253d9

SHA256
0aa374bc456330fd1b5daf18d25b4bb8e2df1998dfa85466f2c31843ff56e815

SHA512
8aee3186a95b389d39882620b7c4199a29aa50580aa98a381b2931a934de6406943c89d4d00ebeabff21e2b03b4a4adcc01e37e32a2335c4838be24bdbf61936

Download Submit
/data/user/0/com.baresucuvuzefa.feyi/shared_prefs/WebViewChromiumPrefs.xml

Filesize
127B

MD5
97ccd9a2b2063143df56b6937f961ca4

SHA1
5e78a91ae5df289ce83443cb7d5589dd3504fb5d

SHA256
248ff7928128015b1cfe3e6517c8f9b8c9511bfb8c8baf44fc1370640eac61fd

SHA512
86c05a5bb3d7eedea390664796966e9e5a5bf846c85808da54407788a76b3ee25b91428242a1e76d8765bfe51e1ba3636617fbab6e7dbb39fcc433e07c3fcd3b

Download Submit
/data/user/0/com.baresucuvuzefa.feyi/shared_prefs/settings.xml

Filesize
136B

MD5
6eccda9809eb1a0469d837f6d709a5e4

SHA1
78e0de9f8683a3212cb92e3fed187d3570c280ee

SHA256
b93608fcdf6be4e1a5ac8ec1aa44fda38626d50290ceb7c4e86553961fdcf00d

SHA512
f6e04fe482f1e74f89c7eba7e19801f14a2babe6160d2f572f92f02b1bb9758eaac5311ed05872bd08aeec49ac29c5411b304a58b7807eef1bfaffd5cb414d54

Download Submit