silverrat | ae4c24828d6f26b0c5b9cc8879ce0a0d407a26c38c4a0e00cc7db8f0acbf59bd

Analysis

max time kernel
837s
max time network
837s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
15/03/2025, 20:54

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General

Target

Furry Pon Genarator.exe
Size

43KB
MD5

fef906ce39f352f256707edbfd10c335
SHA1

3d99a71ed708eb927821fa84a47a654b7667ce97
SHA256

ae4c24828d6f26b0c5b9cc8879ce0a0d407a26c38c4a0e00cc7db8f0acbf59bd
SHA512

45a2d4bffcef113c4a27828b54167b6040628fddd9be59768cf2ffaf8a36c5516e40f4d92bda5fb6082687e00bbe5ff70c545b76c20b4f7b476c937906ec1fdf
SSDEEP

768:WZAcASe38zJ/Ol6IoZmtPHJm76JswDRULQP9POGSz1QB6SF/ly:WZAcASeuOtvhmE1DGsP9f+1Qo6/ly

Score

10^/10

silverrat defense_evasion execution persistence trojan

Malware Config

Extracted

Family

silverrat

Version

1.0.0.0

if-eventually.gl.at.ply.gg:17094

Mutex

SilverMutex_aRRoomGgIN

Attributes

certificate
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
decrypted_key
-|S.S.S|-
key
yy6zDjAUmbB09pKvo5Hhug==
key_x509
b0FGeVZNcFRMWVloVHR6Z0VESU5RdlpZUmxZbUFE
reconnect_delay
4
server_signature
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

Signatures

SilverRat
SilverRat is trojan written in C#.
trojan silverrat
Silverrat family
silverrat

Sets file to hidden 1 TTPs 2 IoCs

Modifies file attributes to stop it showing in Explorer etc.

defense_evasion

Hidden Files and Directories

T1564.001

pid	Process
2732	attrib.exe
2324	attrib.exe

Executes dropped EXE 1 IoCs

pid	Process
1760	$77System Runtime.exe

Loads dropped DLL 1 IoCs

pid	Process
1652	cmd.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ = "\"C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Templates\\SysWOW64\\$77System Runtime.exe\""	Furry Pon Genarator.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
2140	powershell.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
2032	timeout.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
2984	schtasks.exe
2708	schtasks.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2128	Furry Pon Genarator.exe
2128	Furry Pon Genarator.exe
2128	Furry Pon Genarator.exe
1760	$77System Runtime.exe
2140	powershell.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeBackupPrivilege	2540	vssvc.exe
Token: SeRestorePrivilege	2540	vssvc.exe
Token: SeAuditPrivilege	2540	vssvc.exe
Token: SeDebugPrivilege	2128	Furry Pon Genarator.exe
Token: SeDebugPrivilege	1760	$77System Runtime.exe
Token: SeDebugPrivilege	2140	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1760	$77System Runtime.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2128 wrote to memory of 2732	2128	Furry Pon Genarator.exe	34
PID 2128 wrote to memory of 2732	2128	Furry Pon Genarator.exe	34
PID 2128 wrote to memory of 2732	2128	Furry Pon Genarator.exe	34
PID 2128 wrote to memory of 2324	2128	Furry Pon Genarator.exe	36
PID 2128 wrote to memory of 2324	2128	Furry Pon Genarator.exe	36
PID 2128 wrote to memory of 2324	2128	Furry Pon Genarator.exe	36
PID 2128 wrote to memory of 1652	2128	Furry Pon Genarator.exe	39
PID 2128 wrote to memory of 1652	2128	Furry Pon Genarator.exe	39
PID 2128 wrote to memory of 1652	2128	Furry Pon Genarator.exe	39
PID 1652 wrote to memory of 2032	1652	cmd.exe	41
PID 1652 wrote to memory of 2032	1652	cmd.exe	41
PID 1652 wrote to memory of 2032	1652	cmd.exe	41
PID 1652 wrote to memory of 1760	1652	cmd.exe	42
PID 1652 wrote to memory of 1760	1652	cmd.exe	42
PID 1652 wrote to memory of 1760	1652	cmd.exe	42
PID 1760 wrote to memory of 2652	1760	$77System Runtime.exe	44
PID 1760 wrote to memory of 2652	1760	$77System Runtime.exe	44
PID 1760 wrote to memory of 2652	1760	$77System Runtime.exe	44
PID 1760 wrote to memory of 2984	1760	$77System Runtime.exe	46
PID 1760 wrote to memory of 2984	1760	$77System Runtime.exe	46
PID 1760 wrote to memory of 2984	1760	$77System Runtime.exe	46
PID 1760 wrote to memory of 2176	1760	$77System Runtime.exe	48
PID 1760 wrote to memory of 2176	1760	$77System Runtime.exe	48
PID 1760 wrote to memory of 2176	1760	$77System Runtime.exe	48
PID 1760 wrote to memory of 2140	1760	$77System Runtime.exe	50
PID 1760 wrote to memory of 2140	1760	$77System Runtime.exe	50
PID 1760 wrote to memory of 2140	1760	$77System Runtime.exe	50
PID 1760 wrote to memory of 2708	1760	$77System Runtime.exe	52
PID 1760 wrote to memory of 2708	1760	$77System Runtime.exe	52
PID 1760 wrote to memory of 2708	1760	$77System Runtime.exe	52

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012
Uses Volume Shadow Copy service COM API
The Volume Shadow Copy service is used to manage backups/snapshots.
ransomware

Views/modifies file attributes 1 TTPs 2 IoCs

defense_evasion

Hidden Files and Directories

T1564.001

pid	Process
2732	attrib.exe
2324	attrib.exe

C:\Users\Admin\AppData\Local\Temp\Furry Pon Genarator.exe
"C:\Users\Admin\AppData\Local\Temp\Furry Pon Genarator.exe"
1⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2128
- C:\Windows\System32\attrib.exe
  "C:\Windows\System32\attrib.exe" +s +h "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\SysWOW64"
  2⤵
  - Sets file to hidden
  - Views/modifies file attributes
  PID:2732
- C:\Windows\System32\attrib.exe
  "C:\Windows\System32\attrib.exe" +s +h "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\SysWOW64\$77System Runtime.exe"
  2⤵
  - Sets file to hidden
  - Views/modifies file attributes
  PID:2324
- C:\Windows\system32\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp944.tmp.bat""
  2⤵
  - Loads dropped DLL
  - Suspicious use of WriteProcessMemory
  PID:1652
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:2032
- - C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\SysWOW64\$77System Runtime.exe
    "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\SysWOW64\$77System Runtime.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:1760
  - - C:\Windows\system32\schtasks.exe
      "schtasks.exe" /query /TN $77System Runtime.exe
      4⤵
      PID:2652
  - - C:\Windows\system32\schtasks.exe
      "schtasks.exe" /Create /SC ONCE /TN "$77System Runtime.exe" /TR "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\SysWOW64\$77System Runtime.exe \"\$77System Runtime.exe\" /AsAdmin" /ST 00:01 /IT /F /RL HIGHEST
      4⤵
      Scheduled Task/Job: Scheduled Task
      PID:2984
  - - C:\Windows\system32\schtasks.exe
      "schtasks.exe" /query /TN $77System Runtime.exe
      4⤵
      PID:2176
  - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Set-MpPreference -ExclusionExtension exe,bat,dll,ps1;exit
      4⤵
      Command and Scripting Interpreter: PowerShell
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:2140
  - - C:\Windows\System32\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /create /sc hourly /mo 1 /tn "System Runtime_Task-HOURLY-01" /tr "%MyFile%" /st 00:00
      4⤵
      Scheduled Task/Job: Scheduled Task
      PID:2708

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2540

C:\Windows\system32\taskeng.exe
taskeng.exe {A1C413B8-46FB-43F8-9EB9-BA68CE0DD1A8} S-1-5-21-1488793075-819845221-1497111674-1000:UPNECVIU\Admin:Interactive:[1]
1⤵
PID:2980

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Hide Artifacts

T1564

Hidden Files and Directories

T1564.001

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp944.tmp.bat

Filesize
197B

MD5
468b9977093d8d9c7ad9b11cb1f53701

SHA1
34b47142bb4a9e787a7f4d7aea0ca6856d4ce5fd

SHA256
32fdcf4fcb12da7d573825e86c5ba2c3b4567bee76c31f57c2183ee2b952ff95

SHA512
7e2a4b045559c8d595b842b739227182f53fbe656df214e59cd574c628e8fc5f5c3672e980825d5ef3e612da0b816ec8d6d7db65ef0638ce22aefb210748871e

Download Submit
\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\SysWOW64\$77System Runtime.exe

Filesize
43KB

MD5
fef906ce39f352f256707edbfd10c335

SHA1
3d99a71ed708eb927821fa84a47a654b7667ce97

SHA256
ae4c24828d6f26b0c5b9cc8879ce0a0d407a26c38c4a0e00cc7db8f0acbf59bd

SHA512
45a2d4bffcef113c4a27828b54167b6040628fddd9be59768cf2ffaf8a36c5516e40f4d92bda5fb6082687e00bbe5ff70c545b76c20b4f7b476c937906ec1fdf

Download Submit
memory/1760-19-0x000000013F3C0000-0x000000013F3D0000-memory.dmp

Filesize
64KB

Download
memory/2128-0-0x000007FEF4FD3000-0x000007FEF4FD4000-memory.dmp

Filesize
4KB

Download
memory/2128-1-0x000000013F600000-0x000000013F610000-memory.dmp

Filesize
64KB

Download
memory/2128-2-0x000007FEF4FD0000-0x000007FEF59BC000-memory.dmp

Filesize
9.9MB

Download
memory/2128-3-0x000007FEF4FD3000-0x000007FEF4FD4000-memory.dmp

Filesize
4KB

Download
memory/2128-4-0x000007FEF4FD0000-0x000007FEF59BC000-memory.dmp

Filesize
9.9MB

Download
memory/2128-14-0x000007FEF4FD0000-0x000007FEF59BC000-memory.dmp

Filesize
9.9MB

Download
memory/2140-24-0x000000001B5B0000-0x000000001B892000-memory.dmp

Filesize
2.9MB

Download
memory/2140-25-0x0000000002820000-0x0000000002828000-memory.dmp

Filesize
32KB

Download