silverrat | 560953939f22102629a3b62f3468c5a13c6c25f25b2aeabda76bd0e0cf2d73d5

General

Target

560953939f22102629a3b62f3468c5a13c6c25f25b2aeabda76bd0e0cf2d73d5.exe
Size

45KB
MD5

d3ccb3a1ecb388c950062855a916c827
SHA1

f5d5ec3f4877819d41a2de66748d24347a00d1a1
SHA256

560953939f22102629a3b62f3468c5a13c6c25f25b2aeabda76bd0e0cf2d73d5
SHA512

0d67ad4f46ece4cdb2273255f4d614bcce89ca3758c96bd45c2a1d34fdd04c8214d0c3a97e79fa3acc47571af53fab7036789eaab563fbb3216896e53cffb9af
SSDEEP

768:X6sg/BD9qVKOXnXhEk75rrmt1E+cXjA7RULQv9S8Q9hD1B6SEJvrl/xU:X6sgJD9q8U5rCwjA7Gsv9eF1oVJ5/xU

Score

10^/10

silverrat defense_evasion trojan

Malware Config

Extracted

Family

silverrat

Version

1.0.0.0

C2

127.0.0.1:7777

Mutex

SilverMutex_rRFGGPWbDL

Attributes

certificate
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
decrypted_key
-|S.S.S|-
discord
https://discordapp.com/api/webhooks/1354344972534550572/iYaCJzbXkLb3YT6yUhx_-NiWb1GadYyNw4eCuscw0WHsCZ3xCxErc2s6bSsEQ3LUa0nl
key
yy6zDjAUmbB09pKvo5Hhug==
key_x509
eWhTQVpxY2hiWVREZmZUVUdEckliYXlSdE9TTGNV
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
1796	attrib.exe
2936	attrib.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2156	560953939f22102629a3b62f3468c5a13c6c25f25b2aeabda76bd0e0cf2d73d5.exe
2156	560953939f22102629a3b62f3468c5a13c6c25f25b2aeabda76bd0e0cf2d73d5.exe
2156	560953939f22102629a3b62f3468c5a13c6c25f25b2aeabda76bd0e0cf2d73d5.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeBackupPrivilege	2432	vssvc.exe
Token: SeRestorePrivilege	2432	vssvc.exe
Token: SeAuditPrivilege	2432	vssvc.exe
Token: SeDebugPrivilege	2156	560953939f22102629a3b62f3468c5a13c6c25f25b2aeabda76bd0e0cf2d73d5.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2156 wrote to memory of 1796	2156	560953939f22102629a3b62f3468c5a13c6c25f25b2aeabda76bd0e0cf2d73d5.exe	34
PID 2156 wrote to memory of 1796	2156	560953939f22102629a3b62f3468c5a13c6c25f25b2aeabda76bd0e0cf2d73d5.exe	34
PID 2156 wrote to memory of 1796	2156	560953939f22102629a3b62f3468c5a13c6c25f25b2aeabda76bd0e0cf2d73d5.exe	34
PID 2156 wrote to memory of 2936	2156	560953939f22102629a3b62f3468c5a13c6c25f25b2aeabda76bd0e0cf2d73d5.exe	36
PID 2156 wrote to memory of 2936	2156	560953939f22102629a3b62f3468c5a13c6c25f25b2aeabda76bd0e0cf2d73d5.exe	36
PID 2156 wrote to memory of 2936	2156	560953939f22102629a3b62f3468c5a13c6c25f25b2aeabda76bd0e0cf2d73d5.exe	36

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
1796	attrib.exe
2936	attrib.exe

C:\Users\Admin\AppData\Local\Temp\560953939f22102629a3b62f3468c5a13c6c25f25b2aeabda76bd0e0cf2d73d5.exe
"C:\Users\Admin\AppData\Local\Temp\560953939f22102629a3b62f3468c5a13c6c25f25b2aeabda76bd0e0cf2d73d5.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2156
- C:\Windows\System32\attrib.exe
  "C:\Windows\System32\attrib.exe" +s +h "C:\Users\Admin\dw"
  2⤵
  - Sets file to hidden
  - Views/modifies file attributes
  PID:1796
- C:\Windows\System32\attrib.exe
  "C:\Windows\System32\attrib.exe" +s +h "C:\Users\Admin\dw\$77sd.exe"
  2⤵
  - Sets file to hidden
  - Views/modifies file attributes
  PID:2936

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2432

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Hide Artifacts

2

T1564

Hidden Files and Directories

2

T1564.001

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/2156-0-0x000007FEF5B43000-0x000007FEF5B44000-memory.dmp

Filesize
4KB

Download
memory/2156-1-0x000000013FFD0000-0x000000013FFE0000-memory.dmp

Filesize
64KB

Download
memory/2156-2-0x000007FEF5B40000-0x000007FEF652C000-memory.dmp

Filesize
9.9MB

Download
memory/2156-3-0x000007FEF5B43000-0x000007FEF5B44000-memory.dmp

Filesize
4KB

Download
memory/2156-4-0x000007FEF5B40000-0x000007FEF652C000-memory.dmp

Filesize
9.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads