silverrat | 425b543f8a9e3709dbfd9317236fcdc169c4a02af0128c285c31b7bce4fc6bb1

General

Target

425b543f8a9e3709dbfd9317236fcdc169c4a02af0128c285c31b7bce4fc6bb1.exe
Size

45KB
MD5

f2d5f9466d92077f4c6f03c89c28d504
SHA1

f25ebe46d064d711b4d66e4322ead0459f8f3bc9
SHA256

425b543f8a9e3709dbfd9317236fcdc169c4a02af0128c285c31b7bce4fc6bb1
SHA512

b2cbc924cd300e2940288249387b14509966b049be4086d335176454a80912c965ad8f60b70b223cc207556bb75e90e559406a0263b221bc392714b06988ab1f
SSDEEP

768:eNV+sOzGDZutLgeZeH/3j6tDULGcbi00RUjQx9PYTh8RIB6SzxzgvrAWEsh:eNV+sAk3jeD14b0GUx95IoGxzgsWEsh

Score

10^/10

silverrat defense_evasion persistence trojan

Malware Config

Extracted

Family

silverrat

Version

1.0.0.0

C2

traffic-equipment.gl.at.ply.gg:37035

Mutex

wnykMJYHba

Attributes

certificate
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
decrypted_key
-|S.S.S|-
discord
https://discord.com/api/webhooks/1362208671114723479/LvdkCF57ZASLhyMey8E8SalpGbpRjudiP5GtndFuJHj6Qkuha-CXPrshzVau_JY7H3k6
key
yy6zDjAUmbB09pKvo5Hhug==
key_x509
VFNiTWdsYVhhVVNtVUVHRU1KRndBWUxYWG9scEJZ
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
4864	attrib.exe
4936	attrib.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\\Windows Security Health Service\\$77Windows Security Health Service.cmd\""	425b543f8a9e3709dbfd9317236fcdc169c4a02af0128c285c31b7bce4fc6bb1.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
2508	timeout.exe

Suspicious behavior: EnumeratesProcesses 19 IoCs

pid	Process
2352	425b543f8a9e3709dbfd9317236fcdc169c4a02af0128c285c31b7bce4fc6bb1.exe
2352	425b543f8a9e3709dbfd9317236fcdc169c4a02af0128c285c31b7bce4fc6bb1.exe
2352	425b543f8a9e3709dbfd9317236fcdc169c4a02af0128c285c31b7bce4fc6bb1.exe
2352	425b543f8a9e3709dbfd9317236fcdc169c4a02af0128c285c31b7bce4fc6bb1.exe
2352	425b543f8a9e3709dbfd9317236fcdc169c4a02af0128c285c31b7bce4fc6bb1.exe
2352	425b543f8a9e3709dbfd9317236fcdc169c4a02af0128c285c31b7bce4fc6bb1.exe
2352	425b543f8a9e3709dbfd9317236fcdc169c4a02af0128c285c31b7bce4fc6bb1.exe
2352	425b543f8a9e3709dbfd9317236fcdc169c4a02af0128c285c31b7bce4fc6bb1.exe
2352	425b543f8a9e3709dbfd9317236fcdc169c4a02af0128c285c31b7bce4fc6bb1.exe
2352	425b543f8a9e3709dbfd9317236fcdc169c4a02af0128c285c31b7bce4fc6bb1.exe
2352	425b543f8a9e3709dbfd9317236fcdc169c4a02af0128c285c31b7bce4fc6bb1.exe
2352	425b543f8a9e3709dbfd9317236fcdc169c4a02af0128c285c31b7bce4fc6bb1.exe
2352	425b543f8a9e3709dbfd9317236fcdc169c4a02af0128c285c31b7bce4fc6bb1.exe
2352	425b543f8a9e3709dbfd9317236fcdc169c4a02af0128c285c31b7bce4fc6bb1.exe
2352	425b543f8a9e3709dbfd9317236fcdc169c4a02af0128c285c31b7bce4fc6bb1.exe
2352	425b543f8a9e3709dbfd9317236fcdc169c4a02af0128c285c31b7bce4fc6bb1.exe
2352	425b543f8a9e3709dbfd9317236fcdc169c4a02af0128c285c31b7bce4fc6bb1.exe
2352	425b543f8a9e3709dbfd9317236fcdc169c4a02af0128c285c31b7bce4fc6bb1.exe
2352	425b543f8a9e3709dbfd9317236fcdc169c4a02af0128c285c31b7bce4fc6bb1.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeBackupPrivilege	4592	vssvc.exe
Token: SeRestorePrivilege	4592	vssvc.exe
Token: SeAuditPrivilege	4592	vssvc.exe
Token: SeDebugPrivilege	2352	425b543f8a9e3709dbfd9317236fcdc169c4a02af0128c285c31b7bce4fc6bb1.exe
Token: 33	2584	AUDIODG.EXE
Token: SeIncBasePriorityPrivilege	2584	AUDIODG.EXE

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 2352 wrote to memory of 4864	2352	425b543f8a9e3709dbfd9317236fcdc169c4a02af0128c285c31b7bce4fc6bb1.exe	84
PID 2352 wrote to memory of 4864	2352	425b543f8a9e3709dbfd9317236fcdc169c4a02af0128c285c31b7bce4fc6bb1.exe	84
PID 2352 wrote to memory of 4936	2352	425b543f8a9e3709dbfd9317236fcdc169c4a02af0128c285c31b7bce4fc6bb1.exe	86
PID 2352 wrote to memory of 4936	2352	425b543f8a9e3709dbfd9317236fcdc169c4a02af0128c285c31b7bce4fc6bb1.exe	86
PID 2352 wrote to memory of 5080	2352	425b543f8a9e3709dbfd9317236fcdc169c4a02af0128c285c31b7bce4fc6bb1.exe	89
PID 2352 wrote to memory of 5080	2352	425b543f8a9e3709dbfd9317236fcdc169c4a02af0128c285c31b7bce4fc6bb1.exe	89
PID 5080 wrote to memory of 2508	5080	cmd.exe	92
PID 5080 wrote to memory of 2508	5080	cmd.exe	92
PID 5080 wrote to memory of 5024	5080	cmd.exe	94
PID 5080 wrote to memory of 5024	5080	cmd.exe	94

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
4936	attrib.exe
4864	attrib.exe

C:\Users\Admin\AppData\Local\Temp\425b543f8a9e3709dbfd9317236fcdc169c4a02af0128c285c31b7bce4fc6bb1.exe
"C:\Users\Admin\AppData\Local\Temp\425b543f8a9e3709dbfd9317236fcdc169c4a02af0128c285c31b7bce4fc6bb1.exe"
1⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2352
- C:\Windows\System32\attrib.exe
  "C:\Windows\System32\attrib.exe" +s +h "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\Windows Security Health Service"
  2⤵
  - Sets file to hidden
  - Views/modifies file attributes
  PID:4864
- C:\Windows\System32\attrib.exe
  "C:\Windows\System32\attrib.exe" +s +h "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\Windows Security Health Service\$77Windows Security Health Service.cmd"
  2⤵
  - Sets file to hidden
  - Views/modifies file attributes
  PID:4936
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpF5D9.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:5080
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:2508
- - C:\Windows\system32\cmd.exe
    C:\Windows\system32\cmd.exe /K "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\Windows Security Health Service\$77Windows Security Health Service.cmd"
    3⤵
    PID:5024

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:4592

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\Windows Security Health Service\$77Windows Security Health Service.cmd"
1⤵
PID:4736

C:\Windows\system32\AUDIODG.EXE
C:\Windows\system32\AUDIODG.EXE 0x00000000000004C8 0x00000000000004D4
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2584

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Hide Artifacts

2

T1564

Hidden Files and Directories

Modify Registry

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpF5D9.tmp.bat

Filesize
238B

MD5
6b70a8e60cb7d77da2faea2c9e41e0db

SHA1
6bedd603e1c89167e82980759bbeef34a6155009

SHA256
fdc0898f043054df6e5a441a8119613555f24f7ca2cb7e0a6bb201ebbd2602c0

SHA512
bb9542442837b79d6aac9f62c28f188627ab6681bda966a13f56c0fb2e713b6a274e87e8db0bf6a3998d3c810e64f1df4f471ba16cea0d325eaa58536fe515f5

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\Windows Security Health Service\$77Windows Security Health Service.cmd

Filesize
45KB

MD5
f2d5f9466d92077f4c6f03c89c28d504

SHA1
f25ebe46d064d711b4d66e4322ead0459f8f3bc9

SHA256
425b543f8a9e3709dbfd9317236fcdc169c4a02af0128c285c31b7bce4fc6bb1

SHA512
b2cbc924cd300e2940288249387b14509966b049be4086d335176454a80912c965ad8f60b70b223cc207556bb75e90e559406a0263b221bc392714b06988ab1f

Download Submit
memory/2352-0-0x00007FF81E673000-0x00007FF81E675000-memory.dmp

Filesize
8KB

Download
memory/2352-1-0x0000000000E30000-0x0000000000E42000-memory.dmp

Filesize
72KB

Download
memory/2352-2-0x00007FF81E670000-0x00007FF81F132000-memory.dmp

Filesize
10.8MB

Download
memory/2352-3-0x00007FF81E673000-0x00007FF81E675000-memory.dmp

Filesize
8KB

Download
memory/2352-4-0x00007FF81E670000-0x00007FF81F132000-memory.dmp

Filesize
10.8MB

Download
memory/2352-9-0x00007FF81E670000-0x00007FF81F132000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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Downloads