filecoder | 61f73bf90c3234faeb8aa7c90f24fa3f7a3a1d38b2e94d40ce96a21e7320fd28

Analysis

max time kernel
124s
max time network
155s
platform
android_x64
resource
android-x64-20240624-en
resource tags

androidarch:x64arch:x86image:android-x64-20240624-enlocale:en-usos:android-10-x64system
submitted
17/01/2025, 00:12

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General

Target

7.apk
Size

6.8MB
MD5

73d0f5db820e8b491365e3faa9b55498
SHA1

d5ef600aa1c01fa200ed46140c8308637f09dfcd
SHA256

61f73bf90c3234faeb8aa7c90f24fa3f7a3a1d38b2e94d40ce96a21e7320fd28
SHA512

796c47b244bf7d871eb0c0e43dd1b8eed86d15c00a5128ae7740bf87c0b5fcbe9787ee133f739ee0dd5986bee49075208bb768718db12590b2c7073ebe1ed89b
SSDEEP

196608:HSwZWQeHQZzcTK77FMQ+V+Y4Bz/JdLdJ3Uh3IwNde:H5ZwH80EJEv4h/9Shz7e

Score

10^/10

filecoder collection credential_access discovery impact persistence ransomware

Malware Config

Signatures

Filecoder family
filecoder
Filecoder.C
A ransomware family that spreads to other victims via SMS.
ransomware filecoder

Obtains sensitive information copied to the device clipboard 2 TTPs 1 IoCs

Application may abuse the framework's APIs to obtain sensitive information copied to the device clipboard.

collection credential_access impact

Clipboard Data

T1414

Transmitted Data Manipulation

T1641.001

description	ioc	Process
Framework service call	android.content.IClipboard.addPrimaryClipChangedListener	net.south.seven

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service

T1102

flow	ioc
4	pastebin.com
5	pastebin.com

Queries the mobile country code (MCC) 1 TTPs 1 IoCs

discovery

System Network Configuration Discovery

T1422

description	ioc	Process
Framework service call	com.android.internal.telephony.ITelephony.getNetworkCountryIsoForPhone	net.south.seven

Changes the wallpaper (common with ransomware activity) 1 IoCs

ransomware

description	ioc	Process
Framework service call	android.app.IWallpaperManager.setWallpaper	net.south.seven

Registers a broadcast receiver at runtime (usually for listening for system events) 1 TTPs 1 IoCs

persistence

Broadcast Receivers

T1624.001

description	ioc	Process
Framework service call	android.app.IActivityManager.registerReceiver	net.south.seven

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

impact

Data Encrypted for Impact

T1471

description	ioc	Process
Framework API call	javax.crypto.Cipher.doFinal	net.south.seven

Checks CPU information 2 TTPs 1 IoCs

System Checks

T1633.001

System Information Discovery

T1426

description	ioc	Process
File opened for read	/proc/cpuinfo	net.south.seven

Checks memory information 2 TTPs 1 IoCs

System Checks

T1633.001

System Information Discovery

T1426

description	ioc	Process
File opened for read	/proc/meminfo	net.south.seven

net.south.seven
1⤵
- Obtains sensitive information copied to the device clipboard
- Queries the mobile country code (MCC)
- Changes the wallpaper (common with ransomware activity)
- Registers a broadcast receiver at runtime (usually for listening for system events)
- Uses Crypto APIs (Might try to encrypt user data)
- Checks CPU information
- Checks memory information
PID:4916

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Web Service

T1102

Exfiltration

Impact

MITRE ATT&CK Mobile v15

Initial Access

Execution

Persistence

Event Triggered Execution

T1624

Broadcast Receivers

T1624.001

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

T1633

System Checks

T1633.001

Credential Access

Clipboard Data

T1414

Discovery

System Information Discovery

T1426

System Network Configuration Discovery

T1422

Lateral Movement

Collection

Clipboard Data

T1414

Command and Control

Exfiltration

Impact

Data Encrypted for Impact

T1471

Data Manipulation

T1641

Transmitted Data Manipulation

T1641.001

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Downloads

/data/system/users/0/wallpaper_orig

Filesize
1.3MB

MD5
d31fce997eda8c4e158c241482fd20c1

SHA1
7ba41ff4814e553823202ed27a5ede6149e8d1f4

SHA256
c2efbdb805cbd85d8dea7f87b27a8c2326fa3bdd6aec0bb57cacf97c33619098

SHA512
773f1dae5a5174e841498570cd2760ed350f1217fca2df1d06b7d2e7f0698c064dfc8c00528c283031b7c4cfd9b8b08d1892c907761713cf92dfb74940bd28f6

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

MITRE ATT&CK Mobile v15

Replay Monitor

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Downloads