masslogger | 5f53adb34adbcb6eeec29d48e9d80a401d1476eff2e826cb2c7ac02d8d7e2785

Analysis

max time kernel
17s
max time network
112s
platform
windows10_x64
resource
win10v20201028
submitted
21/11/2020, 07:51

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General

Target
SKM_C25820112116120.exe
Size 1.2MB
Sample201121-bd7xsfdv2x
SHA256 5f53adb34adbcb6eeec29d48e9d80a401d1476eff2e826cb2c7ac02d8d7e2785
MD5 2559a4a701f88d7793082cea77f7a73c
SHA1 5548a12e53461128020f9feaefdeac7f797e2830
SHA512 a929420bb0bb9fc22262dbec8145a3c451e241a096c18eb3bd3e78c7766e5b021fcc9462477ea58866f4b329d65a2f2e3ec738fbf64d4dadd201cb3eab428ca2
MD5 SHA1 SHA512

Score

10^/10

masslogger spyware stealer

Malware Config

Signatures

MassLogger
Masslogger is a .NET stealer targeting passwords from browsers, email and cryptocurrency clients.
stealer spyware masslogger

MassLogger Main Payload 4 IoCs

resource	yara_rule
behavioral2/memory/3796-1-0x0000000000400000-0x0000000000496000-memory.dmp	family_masslogger
behavioral2/memory/3796-2-0x000000000040188B-mapping.dmp	family_masslogger
behavioral2/memory/3796-3-0x0000000000400000-0x0000000000496000-memory.dmp	family_masslogger
behavioral2/memory/3796-8-0x00000000050A0000-0x0000000005121000-memory.dmp	family_masslogger

Deletes itself 1 IoCs

pid	Process
1172	powershell.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3160 set thread context of 3796	3160	SKM_C25820112116120.exe	79

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
1512	schtasks.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
3796	SKM_C25820112116120.exe
3796	SKM_C25820112116120.exe
1172	powershell.exe
1172	powershell.exe
1172	powershell.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
3160	SKM_C25820112116120.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3796	SKM_C25820112116120.exe
Token: SeDebugPrivilege	1172	powershell.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 3160 wrote to memory of 3060	3160	SKM_C25820112116120.exe	78
PID 3160 wrote to memory of 3060	3160	SKM_C25820112116120.exe	78
PID 3160 wrote to memory of 3060	3160	SKM_C25820112116120.exe	78
PID 3160 wrote to memory of 3796	3160	SKM_C25820112116120.exe	79
PID 3160 wrote to memory of 3796	3160	SKM_C25820112116120.exe	79
PID 3160 wrote to memory of 3796	3160	SKM_C25820112116120.exe	79
PID 3160 wrote to memory of 3796	3160	SKM_C25820112116120.exe	79
PID 3060 wrote to memory of 1512	3060	cmd.exe	81
PID 3060 wrote to memory of 1512	3060	cmd.exe	81
PID 3060 wrote to memory of 1512	3060	cmd.exe	81
PID 3796 wrote to memory of 1172	3796	SKM_C25820112116120.exe	82
PID 3796 wrote to memory of 1172	3796	SKM_C25820112116120.exe	82
PID 3796 wrote to memory of 1172	3796	SKM_C25820112116120.exe	82

C:\Users\Admin\AppData\Local\Temp\SKM_C25820112116120.exe
"C:\Users\Admin\AppData\Local\Temp\SKM_C25820112116120.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:3160
- C:\Windows\SysWOW64\cmd.exe
  cmd /c schtasks /Create /TN name /XML "C:\Users\Admin\AppData\Local\Temp\3bc9d0e4991c4127854c846f1c363314.xml"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3060
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /Create /TN name /XML "C:\Users\Admin\AppData\Local\Temp\3bc9d0e4991c4127854c846f1c363314.xml"
    3⤵
    - Creates scheduled task(s)
    PID:1512
- C:\Users\Admin\AppData\Local\Temp\SKM_C25820112116120.exe
  "C:\Users\Admin\AppData\Local\Temp\SKM_C25820112116120.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3796
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "powershell" Start-Sleep -Seconds 2; Remove-Item -path 'C:\Users\Admin\AppData\Local\Temp\SKM_C25820112116120.exe'
    3⤵
    - Deletes itself
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1172

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

Replay Monitor

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Downloads

memory/1172-14-0x0000000073450000-0x0000000073B3E000-memory.dmp

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memory/1172-24-0x00000000093A0000-0x00000000093A1000-memory.dmp

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memory/1172-27-0x0000000001340000-0x0000000001341000-memory.dmp

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memory/1172-17-0x0000000006B90000-0x0000000006B91000-memory.dmp

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memory/1172-26-0x0000000008D20000-0x0000000008D21000-memory.dmp

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memory/1172-25-0x0000000008940000-0x0000000008941000-memory.dmp

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memory/1172-18-0x0000000007480000-0x0000000007481000-memory.dmp

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memory/1172-23-0x0000000007C80000-0x0000000007C81000-memory.dmp

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memory/1172-22-0x00000000079B0000-0x00000000079B1000-memory.dmp

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memory/1172-21-0x0000000006DE0000-0x0000000006DE1000-memory.dmp

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memory/1172-15-0x0000000001020000-0x0000000001021000-memory.dmp

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memory/1172-20-0x0000000007560000-0x0000000007561000-memory.dmp

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memory/1172-16-0x0000000006E50000-0x0000000006E51000-memory.dmp

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memory/3796-8-0x00000000050A0000-0x0000000005121000-memory.dmp

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memory/3796-12-0x00000000057B0000-0x00000000057B1000-memory.dmp

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memory/3796-11-0x0000000005CB0000-0x0000000005CB1000-memory.dmp

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memory/3796-10-0x0000000005710000-0x0000000005711000-memory.dmp

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memory/3796-1-0x0000000000400000-0x0000000000496000-memory.dmp

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memory/3796-5-0x0000000073230000-0x000000007391E000-memory.dmp

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memory/3796-3-0x0000000000400000-0x0000000000496000-memory.dmp

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