silverrat | 2aab256875748e3e205a6180a3edc476853c6056e62bad7031bf96b351140fd9

Analysis

max time kernel
54s
max time network
58s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
25/03/2025, 19:31

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General

Target

2aab256875748e3e205a6180a3edc476853c6056e62bad7031bf96b351140fd9.exe
Size

43KB
MD5

ed32a7d82b35891f38691e8fa6ecaebb
SHA1

54b54c134249abea5f186032d957fbd89f59d490
SHA256

2aab256875748e3e205a6180a3edc476853c6056e62bad7031bf96b351140fd9
SHA512

02fbf69c4fb2651eed1d98e4097324b5b6fd7c22da7237c9452a4c08fdb5f76210536f5042dde6796f7546a829f8ff9508172d80ce3088307d19cf768f515cce
SSDEEP

768:Z7HrVRjdqtYW/WLf1jdKEMqrA2sSauhRUT/m9wXLYB6S08UUvNVrgE:ZFWzqrAFpGGq92Yoz8UUFVcE

Score

10^/10

silverrat defense_evasion execution persistence trojan

Malware Config

Extracted

Family

silverrat

Version

1.0.0.0

lists-mba.gl.at.ply.gg:34281

Mutex

SilverMutex_fErYmBRYzo

Attributes

certificate
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
decrypted_key
-|S.S.S|-
discord
https://discord.com/api/webhooks/1240368289755172974/pNWyW3BzPxdpeOXdB6tP4ABWWxDfOhsC07vYyMyWkduqpR5HEIOarL4dukoP8PDEsAix
key
yy6zDjAUmbB09pKvo5Hhug==
key_x509
MTIz
payload_url
https://g.top4top.io/p_2522c7w8u1.png
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
2200	attrib.exe
3068	attrib.exe

Executes dropped EXE 1 IoCs

pid	Process
2700	$77svchost.exe.exe

Loads dropped DLL 1 IoCs

pid	Process
2388	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\\appdata\\$77svchost.exe.exe\""	2aab256875748e3e205a6180a3edc476853c6056e62bad7031bf96b351140fd9.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
1664	powershell.exe

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

Web Service

T1102

flow	ioc
4	discord.com
5	discord.com

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
2852	timeout.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

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

persistence execution

Scheduled Task

T1053.005

pid	Process
2704	schtasks.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2484	2aab256875748e3e205a6180a3edc476853c6056e62bad7031bf96b351140fd9.exe
2484	2aab256875748e3e205a6180a3edc476853c6056e62bad7031bf96b351140fd9.exe
2484	2aab256875748e3e205a6180a3edc476853c6056e62bad7031bf96b351140fd9.exe
1664	powershell.exe
2700	$77svchost.exe.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2484	2aab256875748e3e205a6180a3edc476853c6056e62bad7031bf96b351140fd9.exe
Token: SeDebugPrivilege	2700	$77svchost.exe.exe
Token: SeDebugPrivilege	1664	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2700	$77svchost.exe.exe

Suspicious use of WriteProcessMemory 27 IoCs

description	pid	Process	procid_target
PID 2484 wrote to memory of 2200	2484	2aab256875748e3e205a6180a3edc476853c6056e62bad7031bf96b351140fd9.exe	31
PID 2484 wrote to memory of 2200	2484	2aab256875748e3e205a6180a3edc476853c6056e62bad7031bf96b351140fd9.exe	31
PID 2484 wrote to memory of 2200	2484	2aab256875748e3e205a6180a3edc476853c6056e62bad7031bf96b351140fd9.exe	31
PID 2484 wrote to memory of 3068	2484	2aab256875748e3e205a6180a3edc476853c6056e62bad7031bf96b351140fd9.exe	33
PID 2484 wrote to memory of 3068	2484	2aab256875748e3e205a6180a3edc476853c6056e62bad7031bf96b351140fd9.exe	33
PID 2484 wrote to memory of 3068	2484	2aab256875748e3e205a6180a3edc476853c6056e62bad7031bf96b351140fd9.exe	33
PID 2484 wrote to memory of 2388	2484	2aab256875748e3e205a6180a3edc476853c6056e62bad7031bf96b351140fd9.exe	35
PID 2484 wrote to memory of 2388	2484	2aab256875748e3e205a6180a3edc476853c6056e62bad7031bf96b351140fd9.exe	35
PID 2484 wrote to memory of 2388	2484	2aab256875748e3e205a6180a3edc476853c6056e62bad7031bf96b351140fd9.exe	35
PID 2388 wrote to memory of 2852	2388	cmd.exe	37
PID 2388 wrote to memory of 2852	2388	cmd.exe	37
PID 2388 wrote to memory of 2852	2388	cmd.exe	37
PID 2388 wrote to memory of 2700	2388	cmd.exe	38
PID 2388 wrote to memory of 2700	2388	cmd.exe	38
PID 2388 wrote to memory of 2700	2388	cmd.exe	38
PID 2700 wrote to memory of 2588	2700	$77svchost.exe.exe	39
PID 2700 wrote to memory of 2588	2700	$77svchost.exe.exe	39
PID 2700 wrote to memory of 2588	2700	$77svchost.exe.exe	39
PID 2700 wrote to memory of 2704	2700	$77svchost.exe.exe	41
PID 2700 wrote to memory of 2704	2700	$77svchost.exe.exe	41
PID 2700 wrote to memory of 2704	2700	$77svchost.exe.exe	41
PID 2700 wrote to memory of 2580	2700	$77svchost.exe.exe	43
PID 2700 wrote to memory of 2580	2700	$77svchost.exe.exe	43
PID 2700 wrote to memory of 2580	2700	$77svchost.exe.exe	43
PID 2700 wrote to memory of 1664	2700	$77svchost.exe.exe	45
PID 2700 wrote to memory of 1664	2700	$77svchost.exe.exe	45
PID 2700 wrote to memory of 1664	2700	$77svchost.exe.exe	45

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

Views/modifies file attributes 1 TTPs 2 IoCs

defense_evasion

Hidden Files and Directories

T1564.001

pid	Process
2200	attrib.exe
3068	attrib.exe

C:\Users\Admin\AppData\Local\Temp\2aab256875748e3e205a6180a3edc476853c6056e62bad7031bf96b351140fd9.exe
"C:\Users\Admin\AppData\Local\Temp\2aab256875748e3e205a6180a3edc476853c6056e62bad7031bf96b351140fd9.exe"
1⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2484
- C:\Windows\System32\attrib.exe
  "C:\Windows\System32\attrib.exe" +s +h "C:\Users\Admin\AppData\Roaming\appdata"
  2⤵
  - Sets file to hidden
  - Views/modifies file attributes
  PID:2200
- C:\Windows\System32\attrib.exe
  "C:\Windows\System32\attrib.exe" +s +h "C:\Users\Admin\AppData\Roaming\appdata\$77svchost.exe.exe"
  2⤵
  - Sets file to hidden
  - Views/modifies file attributes
  PID:3068
- C:\Windows\system32\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp40E7.tmp.bat""
  2⤵
  - Loads dropped DLL
  - Suspicious use of WriteProcessMemory
  PID:2388
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:2852
- - C:\Users\Admin\AppData\Roaming\appdata\$77svchost.exe.exe
    "C:\Users\Admin\AppData\Roaming\appdata\$77svchost.exe.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:2700
  - - C:\Windows\system32\schtasks.exe
      "schtasks.exe" /query /TN $77svchost.exe.exe
      4⤵
      PID:2588
  - - C:\Windows\system32\schtasks.exe
      "schtasks.exe" /Create /SC ONCE /TN "$77svchost.exe.exe" /TR "C:\Users\Admin\AppData\Roaming\appdata\$77svchost.exe.exe \"\$77svchost.exe.exe\" /AsAdmin" /ST 00:01 /IT /F /RL HIGHEST
      4⤵
      Scheduled Task/Job: Scheduled Task
      PID:2704
  - - C:\Windows\system32\schtasks.exe
      "schtasks.exe" /query /TN $77svchost.exe.exe
      4⤵
      PID:2580
  - - 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:1664

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

Web Service

T1102

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp40E7.tmp.bat

Filesize
166B

MD5
9affe47a7b2ac40ac746219b7b6e858c

SHA1
6f589b0fcee7e170a69f32bc1d437e36bb0d981d

SHA256
9d87a014835b10f6c83eeafb1a74e685be1908653bb1eee726b47014e2711782

SHA512
f4f6657606190005349f76cb4953ffbc58687d8331cf0ef004822d474ebf5d5779bc4d7f0e249a4a4a8b29b21c91a49bbf74dd8e3272d02524ed72e418b5c70f

Download Submit
C:\Users\Admin\AppData\Roaming\appdata\$77svchost.exe.exe

Filesize
43KB

MD5
ed32a7d82b35891f38691e8fa6ecaebb

SHA1
54b54c134249abea5f186032d957fbd89f59d490

SHA256
2aab256875748e3e205a6180a3edc476853c6056e62bad7031bf96b351140fd9

SHA512
02fbf69c4fb2651eed1d98e4097324b5b6fd7c22da7237c9452a4c08fdb5f76210536f5042dde6796f7546a829f8ff9508172d80ce3088307d19cf768f515cce

Download Submit
memory/1664-22-0x000000001B820000-0x000000001BB02000-memory.dmp

Filesize
2.9MB

Download
memory/1664-23-0x0000000002340000-0x0000000002348000-memory.dmp

Filesize
32KB

Download
memory/2484-0-0x000007FEF5813000-0x000007FEF5814000-memory.dmp

Filesize
4KB

Download
memory/2484-1-0x000000013FAC0000-0x000000013FAD0000-memory.dmp

Filesize
64KB

Download
memory/2484-2-0x000007FEF5810000-0x000007FEF61FC000-memory.dmp

Filesize
9.9MB

Download
memory/2484-4-0x000007FEF5813000-0x000007FEF5814000-memory.dmp

Filesize
4KB

Download
memory/2484-5-0x000007FEF5810000-0x000007FEF61FC000-memory.dmp

Filesize
9.9MB

Download
memory/2484-14-0x000007FEF5810000-0x000007FEF61FC000-memory.dmp

Filesize
9.9MB

Download
memory/2700-17-0x000000013FB90000-0x000000013FBA0000-memory.dmp

Filesize
64KB

Download