silverrat | 0aabdf641f3d52d11b464745e1b42b091efa0e5ba91738bb1c11700b612d97e5

General

Target

loader.exe
Size

44KB
MD5

e4e58b0f1c15003574a494e4b48e3f9c
SHA1

fb63c0a2bf0f4b24e5b788196d98a358f754eb64
SHA256

0aabdf641f3d52d11b464745e1b42b091efa0e5ba91738bb1c11700b612d97e5
SHA512

cf27741f51a30f44e8d2abe9bbadeae20af85d0bae8da318e4af51635edd04448ada3c56d07f47a58df0e0da4585f5ff94ac43d26573d51df92b2008893c4744
SSDEEP

768:ZnKfS0ROTyd1HrTWAM20ZxM/x1ph4yAGnRUT/p9wInQh6B6SpWXvrbVBPU:Zk66/x1DqGnG19goosWXfVRU

Score

10^/10

silverrat evasion trojan

Malware Config

Extracted

Family

silverrat

Version

1.0.0.0

C2

functions-transexual.gl.at.ply.gg:43180

Mutex

lAxDBRhAFu

Attributes

certificate
MIIE4DCCAsigAwIBAgIQAKQYOfZd86J2BfNjhG4CWTANBgkqhkiG9w0BAQ0FADARMQ8wDQYDVQQDDAZTaWx2ZXIwIBcNMjIwODI2MTkwMTA4WhgPOTk5OTEyMzEyMzU5NTlaMBExDzANBgNVBAMMBlNpbHZlcjCCAiIwDQYJKoZIhvcNAQEBBQADggIPADCCAgoCggIBAPbpOWfhZTuOfEaqqImTTe5dNHAAry7/mf00DCoI4lPZfypsc1tYraxSPFeayGu09a3qdhkWKSVIgwnu2n4GLQNOCY9fh/1oyrX4Iir3BIkYeU7pKTWgjhUlAmFAUAaNr0ca23Ku2kN79jrDzRznOgE2DEW4p7OiM4Mb097ma9lzu7MyssHbY4VCteAhj9HZiplqBxaC1vXDmzxqG+gUZ1aLcyG7ssdkOjtWVBgT3gD/gOl7KchRzCFB1egDC/vD9WZCG35U3Ngi+IkTznoXR1R06cq4v0UnGjE37R2vcB21qb0ZYNiZJXZHv5i9+R7xoPeNoLda5PqnfGGbhPvNEdD56mdcOKlzGIuyemLkUo8texdpiBWKbtc3JZf5VsKxjJtHDK3xW6gDGI+PAirzGkFPmwcf8WgsblvzLg8OZpVxVs8rmKWoi6qIrf4CXnyl73J4lgzW+ir7PjANAQXwLNGdNnvdMeLeo/muGQPdeNpr6OczGGnkWA4qniHeL51/Gx0a8A+jP9zKiyu+qHcsP2IotgWDH/KlzJVr7IAum+DV92uV8poTDcUNcHaKvhHA65KmEtsvLbK6lFZcAMC0eWC0VgpW44T1/16rOaaky5mP6rTMc3nSyOl/lU/XgAgGGQPe22bRLWYzd3WVeEpI1WnHYXS+tL9IOe4kJP+pYsWDAgMBAAGjMjAwMB0GA1UdDgQWBBR32TJj2LeUx9L+RcSOvmFV6VJq6TAPBgNVHRMBAf8EBTADAQH/MA0GCSqGSIb3DQEBDQUAA4ICAQA+qucSOi7ov7Q1FmAjMf925KuvKuCNwJiu3Sqo3FDGVAD1fAwAi2FdyuXEO2VIUPZCkalFcBna5rqyrc6tcS4T0IL2TsYLrsuGir7PWP7CAcft1urYS1HpNpHxeH/nixwnQaQs/MuRmdm2TeCj6G21P5BTW55U5y9sMPSYwhbD2N7XLgnSQd5Y+80TR7FUiye/k3D37fI9PRhSQGbfYFRQQTmxj84dPTnY5CVgaY9d8fNiFZkyjaZdf+mibK0xQTf+xLVVj+toDNCkc1F462TdmFhCrHd4PoMo0yLDNv4SC6NLRq4haWDRtORw6gd5GYIoCQ3m3oQvNlNxXhhIjsOyxkxOrkCD0c+57PIc7EmKXieJa/XxnkcIVxO8dvTY/vijuz/VaZYl/lPu9ckuqgJ1wRvvsHl70Trv4Mn4X5uCIqRFFlK/mSOZbLIguGkDN3QIZABvej89vlZMhrVfZOG2oawe23FskHjv7thF/WzOXtWw6RUVC1V+hCwbuxFNUjZmmOTUwdXHnus7I2AuiG6Jz1+y9aYiXBcVTdSljxjHRRmiRaAnY94h58vN8NJ4hKL2GVCo6LxkpuplmcntJN0cKraKTPxSXcCRrqWxX9qoIbfvBcUU4vH1jPJCCLNCuDyD3lgQkpPVvq0EMU1a2HFGgMEQMjpYpb38rcadDhT5ag==
decrypted_key
-|S.S.S|-
discord
https://discord.com/api/webhooks/1303745149020667914/kQyaG_tFY62VZNt9yNbv3N84w4AomnzGkaN-Uuv7jh2gKVFiPdpQiJIOUV53IcNqbVzh
key
yy6zDjAUmbB09pKvo5Hhug==
key_x509
RURjWW9nVHFWREhZcnNESmpObEx1VnVPVEVDZ0Zu
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.

evasion

Hidden Files and Directories

T1564.001

pid	Process
5032	attrib.exe
516	attrib.exe

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-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation	loader.exe

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 23 IoCs

pid	Process
2520	loader.exe
2520	loader.exe
2520	loader.exe
2520	loader.exe
2520	loader.exe
2520	loader.exe
2520	loader.exe
2520	loader.exe
2520	loader.exe
2520	loader.exe
2520	loader.exe
2520	loader.exe
2520	loader.exe
2520	loader.exe
2520	loader.exe
2520	loader.exe
2520	loader.exe
2520	loader.exe
2520	loader.exe
2520	loader.exe
2520	loader.exe
2520	loader.exe
2520	loader.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2520	loader.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2520 wrote to memory of 5032	2520	loader.exe	85
PID 2520 wrote to memory of 5032	2520	loader.exe	85
PID 2520 wrote to memory of 516	2520	loader.exe	87
PID 2520 wrote to memory of 516	2520	loader.exe	87

Views/modifies file attributes 1 TTPs 2 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
5032	attrib.exe
516	attrib.exe

C:\Users\Admin\AppData\Local\Temp\loader.exe
"C:\Users\Admin\AppData\Local\Temp\loader.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2520
- C:\Windows\System32\attrib.exe
  "C:\Windows\System32\attrib.exe" +s +h "C:\Users\Admin\fgfgfg"
  2⤵
  - Sets file to hidden
  - Views/modifies file attributes
  PID:5032
- C:\Windows\System32\attrib.exe
  "C:\Windows\System32\attrib.exe" +s +h "C:\Users\Admin\fgfgfg\$77a.exe"
  2⤵
  - Sets file to hidden
  - Views/modifies file attributes
  PID:516

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

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\fgfgfg\$77a.exe

Filesize
44KB

MD5
e4e58b0f1c15003574a494e4b48e3f9c

SHA1
fb63c0a2bf0f4b24e5b788196d98a358f754eb64

SHA256
0aabdf641f3d52d11b464745e1b42b091efa0e5ba91738bb1c11700b612d97e5

SHA512
cf27741f51a30f44e8d2abe9bbadeae20af85d0bae8da318e4af51635edd04448ada3c56d07f47a58df0e0da4585f5ff94ac43d26573d51df92b2008893c4744

Download Submit
memory/2520-0-0x00007FFBB9E73000-0x00007FFBB9E75000-memory.dmp

Filesize
8KB

Download
memory/2520-1-0x0000000000810000-0x0000000000820000-memory.dmp

Filesize
64KB

Download
memory/2520-2-0x00007FFBB9E70000-0x00007FFBBA931000-memory.dmp

Filesize
10.8MB

Download
memory/2520-4-0x00007FFBB9E73000-0x00007FFBB9E75000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads