6d5562256840a1856dd4e60b20f2d0a0edf8a0c18dbd779ffb501c209385ba9d

Analysis

max time kernel
34s
max time network
29s
platform
windows7_x64
resource
win7-20221111-en
resource tags

arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
submitted
07-02-2023 02:08

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General

Target

StuffItEngine.dll
Size

1012.9MB
MD5

ef2868fe1076f5b46db73953886ccd31
SHA1

9cd52d848938fe8059caf5bc34cd8be9b13db9fe
SHA256

2ec8631abe9bc1900ca64b997c53e861b04ec1a67fbef3778fe1f46ff125b98d
SHA512

aa61d2b84cc833a6862a0cb24e911bed0728a1d6e57b810658181105462deb63d00061c53dae9706ba9c139ff801279a8dc2a5011cc01f730b0f30b09fd55a70
SSDEEP

393216:n4wsmYMOqC+tpqrfr2ialtyZqmCB46NwtU5a8Ri36puC3e/cN+:4w8DbfrwYAjBstUa8U36oCOh

Score

5^/10

Malware Config

Signatures

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

Processes:

rundll32.exe

pid process

1096 rundll32.exe
1096 rundll32.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

1708 1096 WerFault.exe rundll32.exe
Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

rundll32.exe

pid process

1096 rundll32.exe

pid	process
1096	rundll32.exe
1096	rundll32.exe

pid	pid_target	process	target process
1708	1096	WerFault.exe	rundll32.exe

pid	process
1096	rundll32.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 1228 wrote to memory of 1096	1228	rundll32.exe	rundll32.exe
PID 1228 wrote to memory of 1096	1228	rundll32.exe	rundll32.exe
PID 1228 wrote to memory of 1096	1228	rundll32.exe	rundll32.exe
PID 1228 wrote to memory of 1096	1228	rundll32.exe	rundll32.exe
PID 1228 wrote to memory of 1096	1228	rundll32.exe	rundll32.exe
PID 1228 wrote to memory of 1096	1228	rundll32.exe	rundll32.exe
PID 1228 wrote to memory of 1096	1228	rundll32.exe	rundll32.exe
PID 1096 wrote to memory of 1708	1096	rundll32.exe	WerFault.exe
PID 1096 wrote to memory of 1708	1096	rundll32.exe	WerFault.exe
PID 1096 wrote to memory of 1708	1096	rundll32.exe	WerFault.exe
PID 1096 wrote to memory of 1708	1096	rundll32.exe	WerFault.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\StuffItEngine.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1228

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\StuffItEngine.dll,#1
2⤵
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1096

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1096 -s 604
3⤵
- Program crash
PID:1708

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1096-54-0x0000000000000000-mapping.dmp

Download
memory/1096-55-0x0000000075C41000-0x0000000075C43000-memory.dmp

Filesize
8KB

Download
memory/1096-56-0x0000000001FF0000-0x0000000006609000-memory.dmp

Filesize
70.1MB

Download
memory/1096-57-0x0000000001FF0000-0x0000000006609000-memory.dmp

Filesize
70.1MB

Download
memory/1096-59-0x0000000001FF0000-0x0000000006609000-memory.dmp

Filesize
70.1MB

Download
memory/1096-62-0x0000000001FF0000-0x0000000006609000-memory.dmp

Filesize
70.1MB

Download
memory/1096-64-0x0000000001FF0000-0x0000000006609000-memory.dmp

Filesize
70.1MB

Download
memory/1096-65-0x0000000001FF0000-0x0000000006609000-memory.dmp

Filesize
70.1MB

Download
memory/1708-63-0x0000000000000000-mapping.dmp

Download