bbf5829871a9c0e6348a4cbab3327df93fd5196b611afafef770cf85e85bfd6c

Analysis

max time kernel
145s
max time network
150s
platform
windows7_x64
resource
win7v200722
submitted
10/08/2020, 13:17

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General

Target
estado de cuenta.scr
Size 1.8MB
Sample200810-e294hpanje
SHA256 bbf5829871a9c0e6348a4cbab3327df93fd5196b611afafef770cf85e85bfd6c
MD5 17a8c036feac43b960a86cdf2395beaf
SHA1 1aa9f423260e4f803e7adf1a9ee7215459c2713f
SHA512 c1e8b17dddff59852788990e2e2baedfbbf2d241ee9e99e8c50cab6af4aff1b6f8b582389bd05502beccd3950d02d430c94ecc57a48b7464ea41db98d675a40d
MD5 SHA1 SHA512

Score

8^/10

persistence

Malware Config

Signatures

Loads dropped DLL 3 IoCs

pid	Process
1208	estado de cuenta.scr
1672	win32.exe
1368	cmd.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-1-5-21-403932158-3302036622-1224131197-1000\Software\Microsoft\Windows\CurrentVersion\Run	reg.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-403932158-3302036622-1224131197-1000\Software\Microsoft\Windows\CurrentVersion\Run\win32 = "C:\\Windows\\system32\\pcalua.exe -a C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Templates\\win32.exe"	reg.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
1288	schtasks.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
1784	timeout.exe

Looks up external IP address via web service 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
5	api.ipify.org

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1208	estado de cuenta.scr
Token: SeDebugPrivilege	1672	win32.exe
Token: SeDebugPrivilege	1868	AddInProcess32.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
1208	estado de cuenta.scr
1208	estado de cuenta.scr
1208	estado de cuenta.scr
1672	win32.exe
1672	win32.exe
1672	win32.exe
1868	AddInProcess32.exe
1868	AddInProcess32.exe
1868	AddInProcess32.exe

Suspicious use of WriteProcessMemory 41 IoCs

description	pid	Process	procid_target
PID 1208 wrote to memory of 828	1208	estado de cuenta.scr	24
PID 1208 wrote to memory of 828	1208	estado de cuenta.scr	24
PID 1208 wrote to memory of 828	1208	estado de cuenta.scr	24
PID 1208 wrote to memory of 828	1208	estado de cuenta.scr	24
PID 828 wrote to memory of 340	828	cmd.exe	26
PID 828 wrote to memory of 340	828	cmd.exe	26
PID 828 wrote to memory of 340	828	cmd.exe	26
PID 828 wrote to memory of 340	828	cmd.exe	26
PID 1208 wrote to memory of 1672	1208	estado de cuenta.scr	27
PID 1208 wrote to memory of 1672	1208	estado de cuenta.scr	27
PID 1208 wrote to memory of 1672	1208	estado de cuenta.scr	27
PID 1208 wrote to memory of 1672	1208	estado de cuenta.scr	27
PID 1672 wrote to memory of 1868	1672	win32.exe	30
PID 1672 wrote to memory of 1868	1672	win32.exe	30
PID 1672 wrote to memory of 1868	1672	win32.exe	30
PID 1672 wrote to memory of 1868	1672	win32.exe	30
PID 1672 wrote to memory of 1868	1672	win32.exe	30
PID 1672 wrote to memory of 1868	1672	win32.exe	30
PID 1672 wrote to memory of 1868	1672	win32.exe	30
PID 1672 wrote to memory of 1868	1672	win32.exe	30
PID 1672 wrote to memory of 1868	1672	win32.exe	30
PID 1868 wrote to memory of 668	1868	AddInProcess32.exe	32
PID 1868 wrote to memory of 668	1868	AddInProcess32.exe	32
PID 1868 wrote to memory of 668	1868	AddInProcess32.exe	32
PID 1868 wrote to memory of 668	1868	AddInProcess32.exe	32
PID 1868 wrote to memory of 1368	1868	AddInProcess32.exe	34
PID 1868 wrote to memory of 1368	1868	AddInProcess32.exe	34
PID 1868 wrote to memory of 1368	1868	AddInProcess32.exe	34
PID 1868 wrote to memory of 1368	1868	AddInProcess32.exe	34
PID 668 wrote to memory of 1288	668	cmd.exe	36
PID 668 wrote to memory of 1288	668	cmd.exe	36
PID 668 wrote to memory of 1288	668	cmd.exe	36
PID 668 wrote to memory of 1288	668	cmd.exe	36
PID 1368 wrote to memory of 1784	1368	cmd.exe	37
PID 1368 wrote to memory of 1784	1368	cmd.exe	37
PID 1368 wrote to memory of 1784	1368	cmd.exe	37
PID 1368 wrote to memory of 1784	1368	cmd.exe	37
PID 1368 wrote to memory of 788	1368	cmd.exe	38
PID 1368 wrote to memory of 788	1368	cmd.exe	38
PID 1368 wrote to memory of 788	1368	cmd.exe	38
PID 1368 wrote to memory of 788	1368	cmd.exe	38

Executes dropped EXE 3 IoCs

pid	Process
1672	win32.exe
1868	AddInProcess32.exe
788	vlc.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1672 set thread context of 1868	1672	win32.exe	30

C:\Users\Admin\AppData\Local\Temp\estado de cuenta.scr
"C:\Users\Admin\AppData\Local\Temp\estado de cuenta.scr" /S
1⤵
- Loads dropped DLL
- Suspicious use of AdjustPrivilegeToken
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1208
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c REG ADD HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run /f /v win32 /t REG_SZ /d C:\Windows\system32\pcalua.exe" -a C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\win32.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:828
- - C:\Windows\SysWOW64\reg.exe
    REG ADD HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run /f /v win32 /t REG_SZ /d C:\Windows\system32\pcalua.exe" -a C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\win32.exe"
    3⤵
    - Adds Run key to start application
    PID:340
- C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\win32.exe
  "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\win32.exe"
  2⤵
  - Loads dropped DLL
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  PID:1672
- - C:\Users\Admin\AppData\Local\Temp\AddInProcess32.exe
    "C:\Users\Admin\AppData\Local\Temp\AddInProcess32.exe"
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    - Executes dropped EXE
    PID:1868
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn vlc.exe /tr '"C:\Users\Admin\AppData\Roaming\VideoLAN\vlc.exe"' & exit
      4⤵
      Suspicious use of WriteProcessMemory
      PID:668
    - - C:\Windows\SysWOW64\schtasks.exe
        
        schtasks /create /f /sc onlogon /rl highest /tn vlc.exe /tr '"C:\Users\Admin\AppData\Roaming\VideoLAN\vlc.exe"'
        5⤵
        Creates scheduled task(s)
        
        PID:1288
  - - C:\Windows\SysWOW64\cmd.exe
      cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp341A.tmp.bat""
      4⤵
      Loads dropped DLL
      Suspicious use of WriteProcessMemory
      PID:1368
    - - C:\Windows\SysWOW64\timeout.exe
        
        timeout 3
        5⤵
        Delays execution with timeout.exe
        
        PID:1784
    - - C:\Users\Admin\AppData\Roaming\VideoLAN\vlc.exe
        
        "C:\Users\Admin\AppData\Roaming\VideoLAN\vlc.exe"
        5⤵
        Executes dropped EXE
        
        PID:788

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Registry Run Keys / Startup Folder

T1060

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/788-37-0x0000000000F60000-0x0000000000F61000-memory.dmp

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memory/788-36-0x00000000739C0000-0x00000000740AE000-memory.dmp

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memory/1208-0-0x00000000739C0000-0x00000000740AE000-memory.dmp

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memory/1208-1-0x00000000003E0000-0x00000000003E1000-memory.dmp

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memory/1208-3-0x0000000000210000-0x000000000021F000-memory.dmp

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memory/1672-11-0x0000000001260000-0x0000000001261000-memory.dmp

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memory/1672-10-0x00000000739C0000-0x00000000740AE000-memory.dmp

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memory/1672-14-0x0000000000540000-0x0000000000543000-memory.dmp

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memory/1868-25-0x0000000004100000-0x0000000004171000-memory.dmp

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memory/1868-22-0x0000000072D00000-0x00000000733EE000-memory.dmp

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memory/1868-21-0x0000000000400000-0x00000000004B8000-memory.dmp

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memory/1868-20-0x0000000000400000-0x00000000004B8000-memory.dmp

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memory/1868-17-0x0000000000400000-0x00000000004B8000-memory.dmp

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