silverrat | 32abf0a215af4198e9c1bad2c9ec0e095c8b6fc83d4b276b0ce03806ced0e64d

General

Target

32abf0a215af4198e9c1bad2c9ec0e095c8b6fc83d4b276b0ce03806ced0e64d.exe
Size

43KB
MD5

f8c2396649f5f0f8218c196fc124c812
SHA1

7260118bbc05571764778bb8d3b822266129e341
SHA256

32abf0a215af4198e9c1bad2c9ec0e095c8b6fc83d4b276b0ce03806ced0e64d
SHA512

b0def3aa05b44de8725050d04ff9ca819aabee0208ca3a4b4785f9e516ac8f519cc21a410eb7730e24ff1ad417feac9be7d01945e3b009f74453627da432890f
SSDEEP

768:XC2Aanfbl+pjJioUmdGP3Z56P6RUkq9XpJz1QB6Sd12OvTnI5Gi:Xdnfx+pjYPZgCGkq9n1QousObnI0i

Score

10^/10

silverrat defense_evasion execution persistence trojan

Malware Config

Extracted

Family

silverrat

Version

1.0.0.0

C2

second-trap.gl.at.ply.gg:63877

Mutex

lAxDBRhAFu

Attributes

certificate
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
decrypted_key
-|S.S.S|-
discord
https://discord.com/api/webhooks/1353847374845317130/hhejEfgnzhFzjjLVt0pwxjVIRFLoHM1GhiYovg1u1EG4R-VsMUoWDsxVlNEjKru71Ggz
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

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
4924	attrib.exe
1364	attrib.exe

Checks computer location settings 2 TTPs 2 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-1-5-21-814918696-1585701690-3140955116-1000\Control Panel\International\Geo\Nation	32abf0a215af4198e9c1bad2c9ec0e095c8b6fc83d4b276b0ce03806ced0e64d.exe
Key value queried	\REGISTRY\USER\S-1-5-21-814918696-1585701690-3140955116-1000\Control Panel\International\Geo\Nation	Service Host.exe

Executes dropped EXE 1 IoCs

pid	Process
5508	Service Host.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\\service\\Service Host.exe\""	32abf0a215af4198e9c1bad2c9ec0e095c8b6fc83d4b276b0ce03806ced0e64d.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
6140	powershell.exe

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

Web Service

T1102

flow	ioc
26	discord.com
27	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
2256	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
4760	schtasks.exe

Suspicious behavior: EnumeratesProcesses 26 IoCs

pid	Process
2884	32abf0a215af4198e9c1bad2c9ec0e095c8b6fc83d4b276b0ce03806ced0e64d.exe
2884	32abf0a215af4198e9c1bad2c9ec0e095c8b6fc83d4b276b0ce03806ced0e64d.exe
2884	32abf0a215af4198e9c1bad2c9ec0e095c8b6fc83d4b276b0ce03806ced0e64d.exe
2884	32abf0a215af4198e9c1bad2c9ec0e095c8b6fc83d4b276b0ce03806ced0e64d.exe
2884	32abf0a215af4198e9c1bad2c9ec0e095c8b6fc83d4b276b0ce03806ced0e64d.exe
2884	32abf0a215af4198e9c1bad2c9ec0e095c8b6fc83d4b276b0ce03806ced0e64d.exe
2884	32abf0a215af4198e9c1bad2c9ec0e095c8b6fc83d4b276b0ce03806ced0e64d.exe
2884	32abf0a215af4198e9c1bad2c9ec0e095c8b6fc83d4b276b0ce03806ced0e64d.exe
2884	32abf0a215af4198e9c1bad2c9ec0e095c8b6fc83d4b276b0ce03806ced0e64d.exe
2884	32abf0a215af4198e9c1bad2c9ec0e095c8b6fc83d4b276b0ce03806ced0e64d.exe
2884	32abf0a215af4198e9c1bad2c9ec0e095c8b6fc83d4b276b0ce03806ced0e64d.exe
2884	32abf0a215af4198e9c1bad2c9ec0e095c8b6fc83d4b276b0ce03806ced0e64d.exe
2884	32abf0a215af4198e9c1bad2c9ec0e095c8b6fc83d4b276b0ce03806ced0e64d.exe
2884	32abf0a215af4198e9c1bad2c9ec0e095c8b6fc83d4b276b0ce03806ced0e64d.exe
2884	32abf0a215af4198e9c1bad2c9ec0e095c8b6fc83d4b276b0ce03806ced0e64d.exe
2884	32abf0a215af4198e9c1bad2c9ec0e095c8b6fc83d4b276b0ce03806ced0e64d.exe
2884	32abf0a215af4198e9c1bad2c9ec0e095c8b6fc83d4b276b0ce03806ced0e64d.exe
2884	32abf0a215af4198e9c1bad2c9ec0e095c8b6fc83d4b276b0ce03806ced0e64d.exe
2884	32abf0a215af4198e9c1bad2c9ec0e095c8b6fc83d4b276b0ce03806ced0e64d.exe
2884	32abf0a215af4198e9c1bad2c9ec0e095c8b6fc83d4b276b0ce03806ced0e64d.exe
2884	32abf0a215af4198e9c1bad2c9ec0e095c8b6fc83d4b276b0ce03806ced0e64d.exe
2884	32abf0a215af4198e9c1bad2c9ec0e095c8b6fc83d4b276b0ce03806ced0e64d.exe
2884	32abf0a215af4198e9c1bad2c9ec0e095c8b6fc83d4b276b0ce03806ced0e64d.exe
6140	powershell.exe
6140	powershell.exe
5508	Service Host.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2884	32abf0a215af4198e9c1bad2c9ec0e095c8b6fc83d4b276b0ce03806ced0e64d.exe
Token: SeDebugPrivilege	5508	Service Host.exe
Token: SeDebugPrivilege	6140	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
5508	Service Host.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 2884 wrote to memory of 4924	2884	32abf0a215af4198e9c1bad2c9ec0e095c8b6fc83d4b276b0ce03806ced0e64d.exe	90
PID 2884 wrote to memory of 4924	2884	32abf0a215af4198e9c1bad2c9ec0e095c8b6fc83d4b276b0ce03806ced0e64d.exe	90
PID 2884 wrote to memory of 1364	2884	32abf0a215af4198e9c1bad2c9ec0e095c8b6fc83d4b276b0ce03806ced0e64d.exe	92
PID 2884 wrote to memory of 1364	2884	32abf0a215af4198e9c1bad2c9ec0e095c8b6fc83d4b276b0ce03806ced0e64d.exe	92
PID 2884 wrote to memory of 4108	2884	32abf0a215af4198e9c1bad2c9ec0e095c8b6fc83d4b276b0ce03806ced0e64d.exe	99
PID 2884 wrote to memory of 4108	2884	32abf0a215af4198e9c1bad2c9ec0e095c8b6fc83d4b276b0ce03806ced0e64d.exe	99
PID 4108 wrote to memory of 2256	4108	cmd.exe	101
PID 4108 wrote to memory of 2256	4108	cmd.exe	101
PID 4108 wrote to memory of 5508	4108	cmd.exe	102
PID 4108 wrote to memory of 5508	4108	cmd.exe	102
PID 5508 wrote to memory of 4428	5508	Service Host.exe	103
PID 5508 wrote to memory of 4428	5508	Service Host.exe	103
PID 5508 wrote to memory of 4760	5508	Service Host.exe	105
PID 5508 wrote to memory of 4760	5508	Service Host.exe	105
PID 5508 wrote to memory of 5340	5508	Service Host.exe	107
PID 5508 wrote to memory of 5340	5508	Service Host.exe	107
PID 5508 wrote to memory of 6140	5508	Service Host.exe	109
PID 5508 wrote to memory of 6140	5508	Service Host.exe	109

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
4924	attrib.exe
1364	attrib.exe

C:\Users\Admin\AppData\Local\Temp\32abf0a215af4198e9c1bad2c9ec0e095c8b6fc83d4b276b0ce03806ced0e64d.exe
"C:\Users\Admin\AppData\Local\Temp\32abf0a215af4198e9c1bad2c9ec0e095c8b6fc83d4b276b0ce03806ced0e64d.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2884
- C:\Windows\System32\attrib.exe
  "C:\Windows\System32\attrib.exe" +s +h "C:\Users\Admin\service"
  2⤵
  - Sets file to hidden
  - Views/modifies file attributes
  PID:4924
- C:\Windows\System32\attrib.exe
  "C:\Windows\System32\attrib.exe" +s +h "C:\Users\Admin\service\Service Host.exe"
  2⤵
  - Sets file to hidden
  - Views/modifies file attributes
  PID:1364
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpBD55.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4108
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:2256
- - C:\Users\Admin\service\Service Host.exe
    "C:\Users\Admin\service\Service Host.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:5508
  - - C:\Windows\SYSTEM32\schtasks.exe
      "schtasks.exe" /query /TN Service Host.exe
      4⤵
      PID:4428
  - - C:\Windows\SYSTEM32\schtasks.exe
      "schtasks.exe" /Create /SC ONCE /TN "Service Host.exe" /TR "C:\Users\Admin\service\Service Host.exe \"\Service Host.exe\" /AsAdmin" /ST 00:01 /IT /F /RL HIGHEST
      4⤵
      Scheduled Task/Job: Scheduled Task
      PID:4760
  - - C:\Windows\SYSTEM32\schtasks.exe
      "schtasks.exe" /query /TN Service Host.exe
      4⤵
      PID:5340
  - - 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:6140

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

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Hide Artifacts

2

T1564

Hidden Files and Directories

Modify Registry

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Web Service

1

T1102

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_cx4hflpk.c1b.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpBD55.tmp.bat

Filesize
148B

MD5
609bb79d98b4511a16d44369bd1f1a78

SHA1
12aefe533d7df5c3051b8ed3ef63345e3ae14bb5

SHA256
f39897edde7a1c1410de9e162ee569e47c82ee3a5eddb96a9382a853df003e0a

SHA512
8411ae8708ab6d05f8249059e7978da8a710fa44172195931d34f9391ab9f4c652bd7593e0e388ba314aa7fff6f55a21b2623a781b8ac14b588e2a52fc4f26b6

Download Submit
C:\Users\Admin\service\Service Host.exe

Filesize
43KB

MD5
f8c2396649f5f0f8218c196fc124c812

SHA1
7260118bbc05571764778bb8d3b822266129e341

SHA256
32abf0a215af4198e9c1bad2c9ec0e095c8b6fc83d4b276b0ce03806ced0e64d

SHA512
b0def3aa05b44de8725050d04ff9ca819aabee0208ca3a4b4785f9e516ac8f519cc21a410eb7730e24ff1ad417feac9be7d01945e3b009f74453627da432890f

Download Submit
memory/2884-3-0x00007FFC49913000-0x00007FFC49915000-memory.dmp

Filesize
8KB

Download
memory/2884-4-0x00007FFC49910000-0x00007FFC4A3D1000-memory.dmp

Filesize
10.8MB

Download
memory/2884-0-0x00007FFC49913000-0x00007FFC49915000-memory.dmp

Filesize
8KB

Download
memory/2884-10-0x00007FFC49910000-0x00007FFC4A3D1000-memory.dmp

Filesize
10.8MB

Download
memory/2884-2-0x00007FFC49910000-0x00007FFC4A3D1000-memory.dmp

Filesize
10.8MB

Download
memory/2884-1-0x00000000009E0000-0x00000000009F0000-memory.dmp

Filesize
64KB

Download
memory/5508-14-0x00007FFC49910000-0x00007FFC4A3D1000-memory.dmp

Filesize
10.8MB

Download
memory/5508-28-0x00007FFC49910000-0x00007FFC4A3D1000-memory.dmp

Filesize
10.8MB

Download
memory/6140-24-0x000001EFF24B0000-0x000001EFF24D2000-memory.dmp

Filesize
136KB

Download
memory/6140-27-0x000001EFF2610000-0x000001EFF282C000-memory.dmp

Filesize
2.1MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads