63deda6fe8af221a650f6ba6a2ee6c7fec17f10bc5e063c9b0aaee4981a01150

Analysis

max time kernel
125s
max time network
109s
platform
windows7_x64
resource
win7v20210408
submitted
20/09/2021, 17:29

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General

Target
44459.8061394676.bin.dll
Size 823KB
Sample210920-v2kkjseff2
SHA256 63deda6fe8af221a650f6ba6a2ee6c7fec17f10bc5e063c9b0aaee4981a01150
MD5 a372400cbff205def639e4db62ef17b4
SHA1 445447a8cd34df42d7fd786a164389cf8e5f82db
SHA512 763807749271cf66fa935b4da272ede62543971e124680381af5f22dd20d48d7f297dfcfb441ad3e56b96902129428d925b89e37ebc745b62d641fe7802b5457
MD5 SHA1 SHA512

Score

7^/10

Malware Config

Signatures

Loads dropped DLL 1 IoCs

pid	Process
1720	regsvr32.exe

Creates scheduled task(s) 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task

T1053

pid	Process
1704	schtasks.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1060	rundll32.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
1060	rundll32.exe

Suspicious use of WriteProcessMemory 29 IoCs

description	pid	Process	procid_target
PID 1092 wrote to memory of 1060	1092	rundll32.exe	25
PID 1092 wrote to memory of 1060	1092	rundll32.exe	25
PID 1092 wrote to memory of 1060	1092	rundll32.exe	25
PID 1092 wrote to memory of 1060	1092	rundll32.exe	25
PID 1092 wrote to memory of 1060	1092	rundll32.exe	25
PID 1092 wrote to memory of 1060	1092	rundll32.exe	25
PID 1092 wrote to memory of 1060	1092	rundll32.exe	25
PID 1060 wrote to memory of 1780	1060	rundll32.exe	28
PID 1060 wrote to memory of 1780	1060	rundll32.exe	28
PID 1060 wrote to memory of 1780	1060	rundll32.exe	28
PID 1060 wrote to memory of 1780	1060	rundll32.exe	28
PID 1060 wrote to memory of 1780	1060	rundll32.exe	28
PID 1060 wrote to memory of 1780	1060	rundll32.exe	28
PID 1780 wrote to memory of 1704	1780	explorer.exe	29
PID 1780 wrote to memory of 1704	1780	explorer.exe	29
PID 1780 wrote to memory of 1704	1780	explorer.exe	29
PID 1780 wrote to memory of 1704	1780	explorer.exe	29
PID 784 wrote to memory of 556	784	taskeng.exe	34
PID 784 wrote to memory of 556	784	taskeng.exe	34
PID 784 wrote to memory of 556	784	taskeng.exe	34
PID 784 wrote to memory of 556	784	taskeng.exe	34
PID 784 wrote to memory of 556	784	taskeng.exe	34
PID 556 wrote to memory of 1720	556	regsvr32.exe	35
PID 556 wrote to memory of 1720	556	regsvr32.exe	35
PID 556 wrote to memory of 1720	556	regsvr32.exe	35
PID 556 wrote to memory of 1720	556	regsvr32.exe	35
PID 556 wrote to memory of 1720	556	regsvr32.exe	35
PID 556 wrote to memory of 1720	556	regsvr32.exe	35
PID 556 wrote to memory of 1720	556	regsvr32.exe	35

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\44459.8061394676.bin.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1092
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\44459.8061394676.bin.dll,#1
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of WriteProcessMemory
  PID:1060
- - C:\Windows\SysWOW64\explorer.exe
    C:\Windows\SysWOW64\explorer.exe
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1780
  - - C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\system32\schtasks.exe" /Create /RU "NT AUTHORITY\SYSTEM" /tn rcaeqnkwzi /tr "regsvr32.exe -s \"C:\Users\Admin\AppData\Local\Temp\44459.8061394676.bin.dll\"" /SC ONCE /Z /ST 19:32 /ET 19:44
      4⤵
      Creates scheduled task(s)
      PID:1704

C:\Windows\system32\taskeng.exe
taskeng.exe {40054A11-7CF3-4EA4-A8D6-2FB99B02E492} S-1-5-18:NT AUTHORITY\System:Service:
1⤵
- Suspicious use of WriteProcessMemory
PID:784
- C:\Windows\system32\regsvr32.exe
  regsvr32.exe -s "C:\Users\Admin\AppData\Local\Temp\44459.8061394676.bin.dll"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:556
- - C:\Windows\SysWOW64\regsvr32.exe
    -s "C:\Users\Admin\AppData\Local\Temp\44459.8061394676.bin.dll"
    3⤵
    - Loads dropped DLL
    PID:1720

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/556-71-0x000007FEFBAA1000-0x000007FEFBAA3000-memory.dmp

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memory/1060-62-0x00000000749C0000-0x00000000749E1000-memory.dmp

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memory/1060-64-0x0000000000160000-0x0000000000161000-memory.dmp

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memory/1060-63-0x00000000749C0000-0x0000000074AAA000-memory.dmp

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memory/1060-61-0x0000000075AF1000-0x0000000075AF3000-memory.dmp

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memory/1780-67-0x0000000074761000-0x0000000074763000-memory.dmp

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memory/1780-69-0x0000000000080000-0x00000000000A1000-memory.dmp

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