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
4880	attrib.exe
4596	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
440	timeout.exe

Suspicious behavior: EnumeratesProcesses 19 IoCs

pid	Process
1468	425b543f8a9e3709dbfd9317236fcdc169c4a02af0128c285c31b7bce4fc6bb1.exe
1468	425b543f8a9e3709dbfd9317236fcdc169c4a02af0128c285c31b7bce4fc6bb1.exe
1468	425b543f8a9e3709dbfd9317236fcdc169c4a02af0128c285c31b7bce4fc6bb1.exe
1468	425b543f8a9e3709dbfd9317236fcdc169c4a02af0128c285c31b7bce4fc6bb1.exe
1468	425b543f8a9e3709dbfd9317236fcdc169c4a02af0128c285c31b7bce4fc6bb1.exe
1468	425b543f8a9e3709dbfd9317236fcdc169c4a02af0128c285c31b7bce4fc6bb1.exe
1468	425b543f8a9e3709dbfd9317236fcdc169c4a02af0128c285c31b7bce4fc6bb1.exe
1468	425b543f8a9e3709dbfd9317236fcdc169c4a02af0128c285c31b7bce4fc6bb1.exe
1468	425b543f8a9e3709dbfd9317236fcdc169c4a02af0128c285c31b7bce4fc6bb1.exe
1468	425b543f8a9e3709dbfd9317236fcdc169c4a02af0128c285c31b7bce4fc6bb1.exe
1468	425b543f8a9e3709dbfd9317236fcdc169c4a02af0128c285c31b7bce4fc6bb1.exe
1468	425b543f8a9e3709dbfd9317236fcdc169c4a02af0128c285c31b7bce4fc6bb1.exe
1468	425b543f8a9e3709dbfd9317236fcdc169c4a02af0128c285c31b7bce4fc6bb1.exe
1468	425b543f8a9e3709dbfd9317236fcdc169c4a02af0128c285c31b7bce4fc6bb1.exe
1468	425b543f8a9e3709dbfd9317236fcdc169c4a02af0128c285c31b7bce4fc6bb1.exe
1468	425b543f8a9e3709dbfd9317236fcdc169c4a02af0128c285c31b7bce4fc6bb1.exe
1468	425b543f8a9e3709dbfd9317236fcdc169c4a02af0128c285c31b7bce4fc6bb1.exe
1468	425b543f8a9e3709dbfd9317236fcdc169c4a02af0128c285c31b7bce4fc6bb1.exe
1468	425b543f8a9e3709dbfd9317236fcdc169c4a02af0128c285c31b7bce4fc6bb1.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeBackupPrivilege	5748	vssvc.exe
Token: SeRestorePrivilege	5748	vssvc.exe
Token: SeAuditPrivilege	5748	vssvc.exe
Token: SeDebugPrivilege	1468	425b543f8a9e3709dbfd9317236fcdc169c4a02af0128c285c31b7bce4fc6bb1.exe
Token: 33	5344	AUDIODG.EXE
Token: SeIncBasePriorityPrivilege	5344	AUDIODG.EXE

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 1468 wrote to memory of 4596	1468	425b543f8a9e3709dbfd9317236fcdc169c4a02af0128c285c31b7bce4fc6bb1.exe	84
PID 1468 wrote to memory of 4596	1468	425b543f8a9e3709dbfd9317236fcdc169c4a02af0128c285c31b7bce4fc6bb1.exe	84
PID 1468 wrote to memory of 4880	1468	425b543f8a9e3709dbfd9317236fcdc169c4a02af0128c285c31b7bce4fc6bb1.exe	86
PID 1468 wrote to memory of 4880	1468	425b543f8a9e3709dbfd9317236fcdc169c4a02af0128c285c31b7bce4fc6bb1.exe	86
PID 1468 wrote to memory of 5048	1468	425b543f8a9e3709dbfd9317236fcdc169c4a02af0128c285c31b7bce4fc6bb1.exe	88
PID 1468 wrote to memory of 5048	1468	425b543f8a9e3709dbfd9317236fcdc169c4a02af0128c285c31b7bce4fc6bb1.exe	88
PID 5048 wrote to memory of 440	5048	cmd.exe	92
PID 5048 wrote to memory of 440	5048	cmd.exe	92
PID 5048 wrote to memory of 2492	5048	cmd.exe	94
PID 5048 wrote to memory of 2492	5048	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
4596	attrib.exe
4880	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:1468
- 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:4596
- 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:4880
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpCA74.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:5048
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:440
- - 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:2492

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:5748

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:5056

C:\Windows\system32\AUDIODG.EXE
C:\Windows\system32\AUDIODG.EXE 0x00000000000004C4 0x00000000000004C8
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:5344

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\tmpCA74.tmp.bat

Filesize
238B

MD5
d7b33dd6ee61c70c6b5dbee3af93a891

SHA1
b461f6d09ca51cd541470260144cbf746a85a97c

SHA256
581f6b72d220d764f85711b61a08e7d6293cdd885e01b3d264ea8031b3e6f858

SHA512
3351efd414fd7c8756535c62669e7a3aa52ce52532da12dbb8ee6c0e25435c392f0390cd2c08c06b16d5e0af7a1e6d63fe648fd3a70264a9c3ae39da1b04ae27

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/1468-0-0x00007FFC0A333000-0x00007FFC0A335000-memory.dmp

Filesize
8KB

Download
memory/1468-1-0x0000000000160000-0x0000000000172000-memory.dmp

Filesize
72KB

Download
memory/1468-2-0x00007FFC0A330000-0x00007FFC0ADF2000-memory.dmp

Filesize
10.8MB

Download
memory/1468-3-0x00007FFC0A333000-0x00007FFC0A335000-memory.dmp

Filesize
8KB

Download
memory/1468-4-0x00007FFC0A330000-0x00007FFC0ADF2000-memory.dmp

Filesize
10.8MB

Download
memory/1468-10-0x00007FFC0A330000-0x00007FFC0ADF2000-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