silverrat | 54deb76201d828c205a61f0b4e792ffa6c46aa617a4ae5802266d23da67e3799

General

Target

config (3).exe
Size

41KB
MD5

82c63ff71723c1d7fd6d72ad6c38ca6f
SHA1

cebffc0a5145003e2d4ea9eeccf4911037505a36
SHA256

54deb76201d828c205a61f0b4e792ffa6c46aa617a4ae5802266d23da67e3799
SHA512

b780b1702b45d5f5c95f2c78e184ee9348ed667d686f1bdffd73c383d432ae44b6d228c3be0cb4e9c988940b1941fc342d063e826a53d757c98346f03e118c8d
SSDEEP

768:XE4YWnNFKnW36fEasNWZ1RWSktRRUEJ9PTCaECz1QB6STYQvMtZ+kU:XELFZsz3GU9rz1QowYQ0tZ+kU

Score

10^/10

silverrat execution trojan

Malware Config

Extracted

Family

silverrat

Version

1.0.0.0

Mutex

lAxDBRhAFu

Attributes

certificate
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
decrypted_key
-|S.S.S|-
discord
https://discord.com/api/webhooks/1339510080353075250/uUezbpNaOpJBQxHG-wMK1O8oQ6C6KtHYoLNlAjVkTBgnTjAEFe2w9fCtkZw_RAo2vGIk
key
yy6zDjAUmbB09pKvo5Hhug==
key_x509
b0FGeVZNcFRMWVloVHR6Z0VESU5RdlpZUmxZbUFE
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

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-189444705-1272902858-1305688695-1000\Control Panel\International\Geo\Nation	$77discord.exe.exe

Executes dropped EXE 1 IoCs

pid	Process
2280	$77discord.exe.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
2884	powershell.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 12 IoCs

Web Service

T1102

flow	ioc
30	pastebin.com
31	pastebin.com
32	pastebin.com
19	discord.com
23	pastebin.com
26	pastebin.com
27	pastebin.com
29	pastebin.com
15	discord.com
22	pastebin.com
25	pastebin.com
28	pastebin.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
1792	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
1864	schtasks.exe

Suspicious behavior: EnumeratesProcesses 24 IoCs

pid	Process
4968	config (3).exe
4968	config (3).exe
4968	config (3).exe
4968	config (3).exe
4968	config (3).exe
4968	config (3).exe
4968	config (3).exe
4968	config (3).exe
4968	config (3).exe
4968	config (3).exe
4968	config (3).exe
4968	config (3).exe
4968	config (3).exe
4968	config (3).exe
4968	config (3).exe
4968	config (3).exe
4968	config (3).exe
4968	config (3).exe
4968	config (3).exe
4968	config (3).exe
4968	config (3).exe
2884	powershell.exe
2884	powershell.exe
2280	$77discord.exe.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	4968	config (3).exe
Token: SeDebugPrivilege	2280	$77discord.exe.exe
Token: SeDebugPrivilege	2884	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2280	$77discord.exe.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 4968 wrote to memory of 3172	4968	config (3).exe	86
PID 4968 wrote to memory of 3172	4968	config (3).exe	86
PID 3172 wrote to memory of 1792	3172	cmd.exe	88
PID 3172 wrote to memory of 1792	3172	cmd.exe	88
PID 3172 wrote to memory of 2280	3172	cmd.exe	92
PID 3172 wrote to memory of 2280	3172	cmd.exe	92
PID 2280 wrote to memory of 2884	2280	$77discord.exe.exe	93
PID 2280 wrote to memory of 2884	2280	$77discord.exe.exe	93
PID 2280 wrote to memory of 1864	2280	$77discord.exe.exe	94
PID 2280 wrote to memory of 1864	2280	$77discord.exe.exe	94

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

C:\Users\Admin\AppData\Local\Temp\config (3).exe
"C:\Users\Admin\AppData\Local\Temp\config (3).exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4968
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpAEDD.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3172
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:1792
- - C:\Users\Admin\discord\$77discord.exe.exe
    "C:\Users\Admin\discord\$77discord.exe.exe"
    3⤵
    - Checks computer location settings
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:2280
  - - 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:2884
  - - C:\Windows\System32\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /create /sc daily /tn "discord.exe_Task-DAILY-21PM" /TR "%MyFile%" /ST 21:00
      4⤵
      Scheduled Task/Job: Scheduled Task
      PID:1864

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Web Service

1

T1102

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ar1hwutx.o3e.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpAEDD.tmp.bat

Filesize
150B

MD5
b0ca4fc54ce48a5da12eea8901cfd0cd

SHA1
b4578353624ca2be4c082b55d8160ddaa3f66064

SHA256
55bc93917b8800fe3b7c4b0250258bfb06637749e9d6fdaec635b32b049f03b5

SHA512
e675629aa1ccaaa4aad1028269d7b8e3b4ea237fc901d3da696b4b0b4b20b9d7db6ab04dd5745fe3dee70440998546b5c035c96f03cb4187435fb63ae174a810

Download Submit
C:\Users\Admin\discord\$77discord.exe.exe

Filesize
41KB

MD5
82c63ff71723c1d7fd6d72ad6c38ca6f

SHA1
cebffc0a5145003e2d4ea9eeccf4911037505a36

SHA256
54deb76201d828c205a61f0b4e792ffa6c46aa617a4ae5802266d23da67e3799

SHA512
b780b1702b45d5f5c95f2c78e184ee9348ed667d686f1bdffd73c383d432ae44b6d228c3be0cb4e9c988940b1941fc342d063e826a53d757c98346f03e118c8d

Download Submit
memory/2280-12-0x00007FFC49EE0000-0x00007FFC4A9A1000-memory.dmp

Filesize
10.8MB

Download
memory/2280-13-0x00007FFC49EE0000-0x00007FFC4A9A1000-memory.dmp

Filesize
10.8MB

Download
memory/2280-26-0x00007FFC49EE0000-0x00007FFC4A9A1000-memory.dmp

Filesize
10.8MB

Download
memory/2280-27-0x00007FFC49EE0000-0x00007FFC4A9A1000-memory.dmp

Filesize
10.8MB

Download
memory/2884-15-0x000001DC2A3F0000-0x000001DC2A412000-memory.dmp

Filesize
136KB

Download
memory/4968-0-0x00007FFC4A643000-0x00007FFC4A645000-memory.dmp

Filesize
8KB

Download
memory/4968-1-0x00000000006F0000-0x00000000006FE000-memory.dmp

Filesize
56KB

Download
memory/4968-2-0x00007FFC4A640000-0x00007FFC4B101000-memory.dmp

Filesize
10.8MB

Download
memory/4968-8-0x00007FFC4A640000-0x00007FFC4B101000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads