8e4e69460c41f2dca725a078c4b20551410c699eb376fa6e6faf148b6da9e45c

Analysis

max time kernel
151s
max time network
105s
platform
windows10-2004_x64
resource
win10v2004-20220901-en
resource tags

arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
submitted
29/11/2022, 05:36

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General

Target

8e4e69460c41f2dca725a078c4b20551410c699eb376fa6e6faf148b6da9e45c.dll
Size

49KB
MD5

a91dedfb4735164393d48dd3260b6ae0
SHA1

cb7821b19ed590833c85c779d1718bf31637d608
SHA256

8e4e69460c41f2dca725a078c4b20551410c699eb376fa6e6faf148b6da9e45c
SHA512

44821e63bdd3ca223b59c942e5b131816c0c5a58ce6f0f7de81a30f19e8971a89a88487a342be135c6078f8f19bedfd0083604a58a046e1daed34807db7324c6
SSDEEP

1536:hlHVfyYWZHUIS5jm0mVrVIXLhPODlQnouy8l4:hlERZU3q0mVpC9Boutl4

Score

9^/10

persistence upx

Malware Config

Signatures

ACProtect 1.3x - 1.4x DLL software 2 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral2/files/0x0001000000022e0f-135.dat	acprotect
behavioral2/files/0x0001000000022e0f-136.dat	acprotect

UPX packed file 6 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/4864-133-0x0000000010000000-0x000000001002C000-memory.dmp	upx
behavioral2/files/0x0001000000022e0f-135.dat	upx
behavioral2/files/0x0001000000022e0f-136.dat	upx
behavioral2/memory/3644-137-0x0000000010000000-0x000000001002C000-memory.dmp	upx
behavioral2/memory/4864-138-0x0000000010000000-0x000000001002C000-memory.dmp	upx
behavioral2/memory/3644-139-0x0000000010000000-0x000000001002C000-memory.dmp	upx

Loads dropped DLL 1 IoCs

pid	Process
3644	rundll32.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Windows\CurrentVersion\Run	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\360Update = "rundll32 \"C:\\Users\\Admin\\AppData\\Local\\360data\\saslxer.dll\",_RunAs@16"	rundll32.exe

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 20 IoCs

pid	Process
4864	rundll32.exe
4864	rundll32.exe
4864	rundll32.exe
4864	rundll32.exe
4864	rundll32.exe
4864	rundll32.exe
4864	rundll32.exe
4864	rundll32.exe
4864	rundll32.exe
4864	rundll32.exe
4864	rundll32.exe
4864	rundll32.exe
4864	rundll32.exe
4864	rundll32.exe
4864	rundll32.exe
4864	rundll32.exe
4864	rundll32.exe
4864	rundll32.exe
4864	rundll32.exe
4864	rundll32.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2952 wrote to memory of 4864	2952	rundll32.exe	81
PID 2952 wrote to memory of 4864	2952	rundll32.exe	81
PID 2952 wrote to memory of 4864	2952	rundll32.exe	81
PID 4864 wrote to memory of 3644	4864	rundll32.exe	82
PID 4864 wrote to memory of 3644	4864	rundll32.exe	82
PID 4864 wrote to memory of 3644	4864	rundll32.exe	82

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\8e4e69460c41f2dca725a078c4b20551410c699eb376fa6e6faf148b6da9e45c.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2952
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\8e4e69460c41f2dca725a078c4b20551410c699eb376fa6e6faf148b6da9e45c.dll,#1
  2⤵
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:4864
- - C:\Windows\SysWOW64\rundll32.exe
    rundll32 "C:\Users\Admin\AppData\Local\360data\saslxer.dll",_RunAs@16
    3⤵
    - Loads dropped DLL
    PID:3644

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\360data\saslxer.dll

Filesize
49KB

MD5
a91dedfb4735164393d48dd3260b6ae0

SHA1
cb7821b19ed590833c85c779d1718bf31637d608

SHA256
8e4e69460c41f2dca725a078c4b20551410c699eb376fa6e6faf148b6da9e45c

SHA512
44821e63bdd3ca223b59c942e5b131816c0c5a58ce6f0f7de81a30f19e8971a89a88487a342be135c6078f8f19bedfd0083604a58a046e1daed34807db7324c6

Download Submit
C:\Users\Admin\AppData\Local\360data\saslxer.dll

Filesize
49KB

MD5
a91dedfb4735164393d48dd3260b6ae0

SHA1
cb7821b19ed590833c85c779d1718bf31637d608

SHA256
8e4e69460c41f2dca725a078c4b20551410c699eb376fa6e6faf148b6da9e45c

SHA512
44821e63bdd3ca223b59c942e5b131816c0c5a58ce6f0f7de81a30f19e8971a89a88487a342be135c6078f8f19bedfd0083604a58a046e1daed34807db7324c6

Download Submit
memory/3644-137-0x0000000010000000-0x000000001002C000-memory.dmp

Filesize
176KB

Download
memory/3644-139-0x0000000010000000-0x000000001002C000-memory.dmp

Filesize
176KB

Download
memory/4864-133-0x0000000010000000-0x000000001002C000-memory.dmp

Filesize
176KB

Download
memory/4864-138-0x0000000010000000-0x000000001002C000-memory.dmp

Filesize
176KB

Download