ermac | 4ccf02c87de6c0bf718d9f8cdf6c61a9edc909fab1cdd7d497572e30fea1f580

Analysis

max time kernel
185950s
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
13/12/2022, 10:41

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General

Target

ermac.apk
Size

2.8MB
MD5

72b3faff0779e1ddaef3a317fbefa29c
SHA1

6af79ef669a9250ae2599348f103f772817c88a2
SHA256

4ccf02c87de6c0bf718d9f8cdf6c61a9edc909fab1cdd7d497572e30fea1f580
SHA512

6a288603b55685d7ce6573ed632f3497f339e7e71e405c9d1fb8dee11a58731bcbbcc137ac3320ee4e88055ee285a5a870f3ebc8258f101bcd83de19ce9543d6
SSDEEP

49152:O7MG0EqP3bAU5vB4f/VBiEZEuAI12iQ24Xnviujng53+mmaIHYu6O+c9:+MHP3bvBmBZZEfIAiQ2ebjnUOZ+g

Score

10^/10

ermac banker evasion infostealer ransomware stealth trojan

Malware Config

Extracted

Family

ermac

http://193.106.191.116:3434

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/4239-0.dex	family_ermac2

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

description	ioc	Process
Framework service call	android.accessibilityservice.IAccessibilityServiceConnection.findAccessibilityNodeInfoByAccessibilityId	com.heruhifosexowe.piwi
Framework service call	android.accessibilityservice.IAccessibilityServiceConnection.findAccessibilityNodeInfosByViewId	com.heruhifosexowe.piwi
Framework service call	android.accessibilityservice.IAccessibilityServiceConnection.findAccessibilityNodeInfosByText	com.heruhifosexowe.piwi

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.heruhifosexowe.piwi

Removes its main activity from the application launcher 1 IoCs

stealth trojan

pid	Process
4239	com.heruhifosexowe.piwi

Acquires the wake lock. 1 IoCs

description	ioc	Process
Framework service call	android.os.IPowerManager.acquireWakeLock	com.heruhifosexowe.piwi

Loads dropped Dex/Jar 1 IoCs

Runs executable file dropped to the device during analysis.

ioc	pid	Process
/data/user/0/com.heruhifosexowe.piwi/app_DynamicOptDex/wZTAb.json	4239	com.heruhifosexowe.piwi

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.heruhifosexowe.piwi

Removes a system notification. 1 IoCs

evasion

description	ioc	Process
Framework service call	android.app.INotificationManager.cancelNotificationWithTag	com.heruhifosexowe.piwi

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

ransomware

description	ioc	Process
Framework API call	javax.crypto.Cipher.doFinal	com.heruhifosexowe.piwi

com.heruhifosexowe.piwi
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:4239

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

/data/user/0/com.heruhifosexowe.piwi/app_DynamicOptDex/wZTAb.json

Filesize
456KB

MD5
745780b4c7bd7ffb3e12e203f8cada52

SHA1
4615d1372289c0468d2c86e07bbe7e914b45d68b

SHA256
56ae1eaab2a1c9e135d908490c2c2f8c2ad11073bd433bef70c25729bfec7b07

SHA512
e60a8769b2782a62acf6cb114778af9b5a21a119c11e8323b5556b6b2834d65690a98e0ebb35f6b9890310168a06104606688f17b5297fe149477cc6efc43903

Download Submit
/data/user/0/com.heruhifosexowe.piwi/app_DynamicOptDex/wZTAb.json

Filesize
899KB

MD5
4705b243f88e10b75353e79019cc3c3c

SHA1
d4560eafa95c42228f29f049202a4ce1a1225f99

SHA256
875e2d19b70c266d04fff7b9c47947af697aeea1d115f14bc0d79b54d4034026

SHA512
a568e2aa5457a58d97a8720c3a15c5fe7176a7f3e6d16435041bf48733209012882a60d782dfb42a7f92dcb9b4e818f601acbca08d9cc3a76089ad3df331a36b

Download Submit
/data/user/0/com.heruhifosexowe.piwi/app_webview/Default/GPUCache/index

Filesize
48B

MD5
6d7d499960179766cd4261d12dacc411

SHA1
e6f8553b0015e12b23cc551afe98763f3b1c9bed

SHA256
c96ac03cfdbc6f4c1bdcdf764f1a6573f852e7aae5ef405969516b93ed271182

SHA512
6526c668477a01a850b8757b77dd3e7be27ad1991f5cf777685efcb03a21f31b71f6eae00f326931599baae4b16360e33e3d0f2894f1b2c1753391df02a14547

Download Submit
/data/user/0/com.heruhifosexowe.piwi/app_webview/Default/GPUCache/index-dir/temp-index

Filesize
96B

MD5
443f26424d8eefcc89e5b1b88524b12e

SHA1
20bf4989edbfa666efd7d07c7d1d715d55aaa7fe

SHA256
d70ffaef160a4919b92759eca91893b2b318dbd69639b923143863cd7899558b

SHA512
2663878563cf1901a0a53dcacceba8e216ac4982a4b5e74e6b093e4a9b7e48ca215743bbeea0974c7e329a3e597dd44b0f2d43c2bdc6521d2dc3e57010c016fd

Download Submit
/data/user/0/com.heruhifosexowe.piwi/app_webview/Default/Session Storage/000001.dbtmp

Filesize
16B

MD5
46295cac801e5d4857d09837238a6394

SHA1
44e0fa1b517dbf802b18faf0785eeea6ac51594b

SHA256
0f1bad70c7bd1e0a69562853ec529355462fcd0423263a3d39d6d0d70b780443

SHA512
8969402593f927350e2ceb4b5bc2a277f3754697c1961e3d6237da322257fbab42909e1a742e22223447f3a4805f8d8ef525432a7c3515a549e984d3eff72b23

Download Submit
/data/user/0/com.heruhifosexowe.piwi/app_webview/Default/Session Storage/000003.log

Filesize
80B

MD5
69449520fd9c139c534e2970342c6bd8

SHA1
230fe369a09def748f8cc23ad70fd19ed8d1b885

SHA256
3f2e9648dfdb2ddb8e9d607e8802fef05afa447e17733dd3fd6d933e7ca49277

SHA512
ea34c39aea13b281a6067de20ad0cda84135e70c97db3cdd59e25e6536b19f7781e5fc0ca4a11c3618d43fc3bd3fbc120dd5c1c47821a248b8ad351f9f4e6367

Download Submit
/data/user/0/com.heruhifosexowe.piwi/app_webview/Default/Session Storage/LOG

Filesize
135B

MD5
128fd22b612961c3452ecbfbbb791c39

SHA1
812de6bb34e01b249b26182c1788065a9453a2bc

SHA256
0171d2f57fef6350ab77067c69cde6daa50772a83b7fa8f70a737928f28a858a

SHA512
726ceccbeb99f095962a592631164c0b286d469b33ca0ee96e56eaaeaae00aed64b8166232b883769df32c3c054c905ede3b0ab83fefee1958218cae92add39c

Download Submit
/data/user/0/com.heruhifosexowe.piwi/app_webview/Default/Session Storage/MANIFEST-000001

Filesize
41B

MD5
5af87dfd673ba2115e2fcf5cfdb727ab

SHA1
d5b5bbf396dc291274584ef71f444f420b6056f1

SHA256
f9d31b278e215eb0d0e9cd709edfa037e828f36214ab7906f612160fead4b2b4

SHA512
de34583a7dbafe4dd0dc0601e8f6906b9bc6a00c56c9323561204f77abbc0dc9007c480ffe4092ff2f194d54616caf50aecbd4a1e9583cae0c76ad6dd7c2375b

Download Submit
/data/user/0/com.heruhifosexowe.piwi/app_webview/Default/Web Data

Filesize
120KB

MD5
a48cd9324b1f8754b07f00d863b840f3

SHA1
11c6614775b35a58f440971dfc87c8aaac6d6173

SHA256
8859a216183793485d4699bf69d7ed96904679834188d07b9a70424d47eb1420

SHA512
35fa712f0af4a5eeed7e00e4e59ed5027dc6609d268462fe79d92043be9ae0c5961ce9e1d2f64b1a196c9b6aa6242b8b83817b3ee4c1058596c58a99c45478b1

Download Submit
/data/user/0/com.heruhifosexowe.piwi/app_webview/Default/Web Data-journal

Filesize
2KB

MD5
79c8a7f750d36365ebe029cf5fa5133a

SHA1
ed0c735a99caeb576b161e47d5fd8d8ff61a4e75

SHA256
3db50d0bfb33833bdb1aa5b8ce98bc2303896f0c65580fef07c97ce1660cef41

SHA512
002b1ff6283c06722e566839ae74ac28748b4ae9c1d69cd5b152d78dfd3a241c35b580469ecf0c7ed9a1988c265d515c3a3ff137fe0193c15af95a8b6e996962

Download Submit
/data/user/0/com.heruhifosexowe.piwi/app_webview/webview_data.lock

Filesize
29B

MD5
528d5d1f673633c095b8b6e928233520

SHA1
1d9ba9a7c7f4b540aa36422460b53a6a16dc306b

SHA256
76071f1616c26ce7173028c0a99521e921df0e0f554d5883625c11f70649c2a5

SHA512
7a40fc298f8a6ed0c800c6bab96867aa1921915e1c925368f9df8cfce19f378bf52958ad1fdcf7a1d51f514614645f427103cba7617db83e800d8564061e8549

Download Submit
/data/user/0/com.heruhifosexowe.piwi/cache/WebView/Crashpad/settings.dat

Filesize
40B

MD5
bbd41ace1647317b2677beb5d601e1c8

SHA1
eb0d223b4f21585ed87dbce5c03d1ef8d59aaf8b

SHA256
be92ffb656a96454bdca7a0fcda45b26babeb4371f10c857d8b965c9381a335f

SHA512
42ae9307f8a7cb1ebd4bd828be39630c5ea5d76f893f79edd1841e4e7272dfe9bd0f6dec1dd8b2f21c3a039ce5a2f69fc15c0dfafa6af29008e2b930301754c3

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

Filesize
96B

MD5
aea906af8477e0ef1eefff7bd795e66a

SHA1
b80d53343c0c76b286d122d059f82caa981118b4

SHA256
50578d64d9a5d155c634e433d4e63694eda030279f72a22524891523a8bea9aa

SHA512
2e7d91f15d1cb09e7fe0e4bfb8b5ae91cacf890b7fa05bc4a38e12cbb615578fdf977c2711cf6885ff87f770ec80f66ab9d0351d2a6cadfbeab0a81ddca2872a

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

Filesize
96B

MD5
aea906af8477e0ef1eefff7bd795e66a

SHA1
b80d53343c0c76b286d122d059f82caa981118b4

SHA256
50578d64d9a5d155c634e433d4e63694eda030279f72a22524891523a8bea9aa

SHA512
2e7d91f15d1cb09e7fe0e4bfb8b5ae91cacf890b7fa05bc4a38e12cbb615578fdf977c2711cf6885ff87f770ec80f66ab9d0351d2a6cadfbeab0a81ddca2872a

Download Submit
/data/user/0/com.heruhifosexowe.piwi/cache/WebView/font_unique_name_table.pb

Filesize
57KB

MD5
f080fa2a56ab5479d58063e5ea871447

SHA1
4b3fd57a98916fa5784305b76ba30af26b5253d9

SHA256
0aa374bc456330fd1b5daf18d25b4bb8e2df1998dfa85466f2c31843ff56e815

SHA512
8aee3186a95b389d39882620b7c4199a29aa50580aa98a381b2931a934de6406943c89d4d00ebeabff21e2b03b4a4adcc01e37e32a2335c4838be24bdbf61936

Download Submit
/data/user/0/com.heruhifosexowe.piwi/shared_prefs/WebViewChromiumPrefs.xml

Filesize
127B

MD5
97ccd9a2b2063143df56b6937f961ca4

SHA1
5e78a91ae5df289ce83443cb7d5589dd3504fb5d

SHA256
248ff7928128015b1cfe3e6517c8f9b8c9511bfb8c8baf44fc1370640eac61fd

SHA512
86c05a5bb3d7eedea390664796966e9e5a5bf846c85808da54407788a76b3ee25b91428242a1e76d8765bfe51e1ba3636617fbab6e7dbb39fcc433e07c3fcd3b

Download Submit
/data/user/0/com.heruhifosexowe.piwi/shared_prefs/settings.xml

Filesize
136B

MD5
60e1ee6ad1a7dbb842885ad8f990644f

SHA1
2325663b3dfcfa9bf5189c3f0ad26be2f59d6fb0

SHA256
ac9f2c97c17ab6dc65aa153b726f28981369fc278c115697629b7b2bde10d870

SHA512
f38e54e2dd62c315d0f0840c9cba11de19ef17bea834b5d0fa1a76aef63f9e4c7466f4e8df95db6cc685b759e581f1844ebbbd753b56717a5b82975f50ee793c

Download Submit