76f921f3a90e55c10ba577da884b572f242653a8b3370e55db4ca39b3158eaa0

Analysis

max time kernel
41s
max time network
34s
platform
windows7_x64
resource
win7-20221111-en
resource tags

arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
submitted
07-12-2022 12:25

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General

Target

RR.lnk
Size

1KB
MD5

5adfb10fa942ee453862b4adbcfbca6f
SHA1

d76867af1d617b82a6c2c69b43f3bcef5fedcdb2
SHA256

4cdbdd8e0e25072b84b74a3116f532819704a43daf567ef9230d137a11631895
SHA512

c79e0913d046d96cfacfd4bd345d021d9868492d4ee0c9422231daf3fc0c4b8d12fb0bf78bc410cb9c82c8dc1c5e54ff581daef5e7159cfa305d3535d3d16c4c

Score

3^/10

Malware Config

Signatures

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

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 19 IoCs

Processes:

cmd.execmd.execmd.exerundll32.exe

description	pid	process	target process
PID 1140 wrote to memory of 1352	1140	cmd.exe	cmd.exe
PID 1140 wrote to memory of 1352	1140	cmd.exe	cmd.exe
PID 1140 wrote to memory of 1352	1140	cmd.exe	cmd.exe
PID 1352 wrote to memory of 964	1352	cmd.exe	cmd.exe
PID 1352 wrote to memory of 964	1352	cmd.exe	cmd.exe
PID 1352 wrote to memory of 964	1352	cmd.exe	cmd.exe
PID 964 wrote to memory of 548	964	cmd.exe	replace.exe
PID 964 wrote to memory of 548	964	cmd.exe	replace.exe
PID 964 wrote to memory of 548	964	cmd.exe	replace.exe
PID 964 wrote to memory of 1160	964	cmd.exe	rundll32.exe
PID 964 wrote to memory of 1160	964	cmd.exe	rundll32.exe
PID 964 wrote to memory of 1160	964	cmd.exe	rundll32.exe
PID 1160 wrote to memory of 900	1160	rundll32.exe	rundll32.exe
PID 1160 wrote to memory of 900	1160	rundll32.exe	rundll32.exe
PID 1160 wrote to memory of 900	1160	rundll32.exe	rundll32.exe
PID 1160 wrote to memory of 900	1160	rundll32.exe	rundll32.exe
PID 1160 wrote to memory of 900	1160	rundll32.exe	rundll32.exe
PID 1160 wrote to memory of 900	1160	rundll32.exe	rundll32.exe
PID 1160 wrote to memory of 900	1160	rundll32.exe	rundll32.exe

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\RR.lnk
1⤵
- Suspicious use of WriteProcessMemory
PID:1140

C:\Windows\System32\cmd.exe
"C:\Windows\System32\cmd.exe" /c sandstone\gold.cmd
2⤵
- Suspicious use of WriteProcessMemory
PID:1352

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /K sandstone\beeches.cmd system rundl
3⤵
- Suspicious use of WriteProcessMemory
PID:964

C:\Windows\system32\replace.exe
replace C:\Windows\\system32\\rundlr32.exe C:\Users\Admin\AppData\Local\Temp /A
4⤵
PID:548

C:\Windows\system32\rundll32.exe
rundll32 sandstone\\kilketh.tmp,init
4⤵
- Suspicious use of WriteProcessMemory
PID:1160

C:\Windows\SysWOW64\rundll32.exe
rundll32 sandstone\\kilketh.tmp,init
5⤵
PID:900

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/548-90-0x0000000000000000-mapping.dmp

Download
memory/900-92-0x0000000000000000-mapping.dmp

Download
memory/900-93-0x0000000075DF1000-0x0000000075DF3000-memory.dmp

Filesize
8KB

Download
memory/964-89-0x0000000000000000-mapping.dmp

Download
memory/1140-54-0x000007FEFC201000-0x000007FEFC203000-memory.dmp

Filesize
8KB

Download
memory/1160-91-0x0000000000000000-mapping.dmp

Download
memory/1352-88-0x0000000000000000-mapping.dmp

Download