c2365436a67ec76dc90b2f6d4fdf55ff9066d166754c5bc9ff7d5a6901f81aa4

Analysis

max time kernel
141s
max time network
197s
platform
windows7_x64
resource
win7v20210408
submitted
16/07/2021, 20:06

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General

Target
05AB720BBE85744CF1CBDAB2AA91BCFF.exe
Size 963KB
Sample210716-cqd28dc2v2
SHA256 c2365436a67ec76dc90b2f6d4fdf55ff9066d166754c5bc9ff7d5a6901f81aa4
MD5 05ab720bbe85744cf1cbdab2aa91bcff
SHA1 18c9839ce9656bbf617a2687b880794371567398
SHA512 051e5ad3e17ab49e77fa59f994b76f70c58b60108a041a8ba54b3ad997b3be0d81ebda338d420734564b49c8075799cc1f0e33912fd32b2f117d7e8a0a441095
MD5 SHA1 SHA512

Score

8^/10

spyware stealer vmprotect

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
1788	intoSessionbrokermonitordhcpWinRefnet.exe
1992	spoolsv.exe

VMProtect packed file 8 IoCs

Detects executables packed with VMProtect commercial packer.

vmprotect

resource	yara_rule
behavioral1/files/0x00030000000130ce-65.dat	vmprotect
behavioral1/files/0x00030000000130ce-67.dat	vmprotect
behavioral1/files/0x00030000000130ce-66.dat	vmprotect
behavioral1/files/0x00030000000130ce-69.dat	vmprotect
behavioral1/memory/1788-70-0x0000000000FC0000-0x0000000000FC1000-memory.dmp	vmprotect
behavioral1/files/0x00030000000130e7-85.dat	vmprotect
behavioral1/memory/1992-87-0x0000000000020000-0x0000000000021000-memory.dmp	vmprotect
behavioral1/files/0x00030000000130e7-86.dat	vmprotect

Loads dropped DLL 2 IoCs

pid	Process
1072	cmd.exe
1072	cmd.exe

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081

Drops file in System32 directory 10 IoCs

description	ioc	Process
File created	C:\Windows\System32\lpk\088424020bedd6b28ac7fd22ee35dcd7322895ce	intoSessionbrokermonitordhcpWinRefnet.exe
File created	C:\Windows\System32\KBDFR\taskhost.exe	intoSessionbrokermonitordhcpWinRefnet.exe
File created	C:\Windows\System32\C_437\spoolsv.exe	intoSessionbrokermonitordhcpWinRefnet.exe
File created	C:\Windows\System32\C_437\f3b6ecef712a24f33798f5d2fb3790c3d9b894c4	intoSessionbrokermonitordhcpWinRefnet.exe
File created	C:\Windows\System32\lpk\conhost.exe	intoSessionbrokermonitordhcpWinRefnet.exe
File created	C:\Windows\System32\wbem\ssdpsrv\24dbde2999530ef5fd907494bc374d663924116c	intoSessionbrokermonitordhcpWinRefnet.exe
File created	C:\Windows\System32\KBDFR\b75386f1303e64d8139363b71e44ac16341adf4e	intoSessionbrokermonitordhcpWinRefnet.exe
File created	C:\Windows\System32\api-ms-win-core-libraryloader-l1-1-0\conhost.exe	intoSessionbrokermonitordhcpWinRefnet.exe
File created	C:\Windows\System32\api-ms-win-core-libraryloader-l1-1-0\088424020bedd6b28ac7fd22ee35dcd7322895ce	intoSessionbrokermonitordhcpWinRefnet.exe
File created	C:\Windows\System32\wbem\ssdpsrv\WmiPrvSE.exe	intoSessionbrokermonitordhcpWinRefnet.exe

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

System Information Discovery
T1082

Creates scheduled task(s) 1 TTPs 7 IoCs

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

persistence

Scheduled Task

T1053

pid	Process
1056	schtasks.exe
1468	schtasks.exe
1132	schtasks.exe
1368	schtasks.exe
904	schtasks.exe
1256	schtasks.exe
1504	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
1788	intoSessionbrokermonitordhcpWinRefnet.exe
1992	spoolsv.exe
1992	spoolsv.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1992	spoolsv.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1788	intoSessionbrokermonitordhcpWinRefnet.exe
Token: SeDebugPrivilege	1992	spoolsv.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 1984 wrote to memory of 1732	1984	05AB720BBE85744CF1CBDAB2AA91BCFF.exe	29
PID 1984 wrote to memory of 1732	1984	05AB720BBE85744CF1CBDAB2AA91BCFF.exe	29
PID 1984 wrote to memory of 1732	1984	05AB720BBE85744CF1CBDAB2AA91BCFF.exe	29
PID 1984 wrote to memory of 1732	1984	05AB720BBE85744CF1CBDAB2AA91BCFF.exe	29
PID 1732 wrote to memory of 1072	1732	WScript.exe	30
PID 1732 wrote to memory of 1072	1732	WScript.exe	30
PID 1732 wrote to memory of 1072	1732	WScript.exe	30
PID 1732 wrote to memory of 1072	1732	WScript.exe	30
PID 1072 wrote to memory of 1788	1072	cmd.exe	32
PID 1072 wrote to memory of 1788	1072	cmd.exe	32
PID 1072 wrote to memory of 1788	1072	cmd.exe	32
PID 1072 wrote to memory of 1788	1072	cmd.exe	32
PID 1788 wrote to memory of 1256	1788	intoSessionbrokermonitordhcpWinRefnet.exe	34
PID 1788 wrote to memory of 1256	1788	intoSessionbrokermonitordhcpWinRefnet.exe	34
PID 1788 wrote to memory of 1256	1788	intoSessionbrokermonitordhcpWinRefnet.exe	34
PID 1788 wrote to memory of 1504	1788	intoSessionbrokermonitordhcpWinRefnet.exe	36
PID 1788 wrote to memory of 1504	1788	intoSessionbrokermonitordhcpWinRefnet.exe	36
PID 1788 wrote to memory of 1504	1788	intoSessionbrokermonitordhcpWinRefnet.exe	36
PID 1788 wrote to memory of 1056	1788	intoSessionbrokermonitordhcpWinRefnet.exe	38
PID 1788 wrote to memory of 1056	1788	intoSessionbrokermonitordhcpWinRefnet.exe	38
PID 1788 wrote to memory of 1056	1788	intoSessionbrokermonitordhcpWinRefnet.exe	38
PID 1788 wrote to memory of 1468	1788	intoSessionbrokermonitordhcpWinRefnet.exe	40
PID 1788 wrote to memory of 1468	1788	intoSessionbrokermonitordhcpWinRefnet.exe	40
PID 1788 wrote to memory of 1468	1788	intoSessionbrokermonitordhcpWinRefnet.exe	40
PID 1788 wrote to memory of 1132	1788	intoSessionbrokermonitordhcpWinRefnet.exe	42
PID 1788 wrote to memory of 1132	1788	intoSessionbrokermonitordhcpWinRefnet.exe	42
PID 1788 wrote to memory of 1132	1788	intoSessionbrokermonitordhcpWinRefnet.exe	42
PID 1788 wrote to memory of 1368	1788	intoSessionbrokermonitordhcpWinRefnet.exe	44
PID 1788 wrote to memory of 1368	1788	intoSessionbrokermonitordhcpWinRefnet.exe	44
PID 1788 wrote to memory of 1368	1788	intoSessionbrokermonitordhcpWinRefnet.exe	44
PID 1788 wrote to memory of 904	1788	intoSessionbrokermonitordhcpWinRefnet.exe	46
PID 1788 wrote to memory of 904	1788	intoSessionbrokermonitordhcpWinRefnet.exe	46
PID 1788 wrote to memory of 904	1788	intoSessionbrokermonitordhcpWinRefnet.exe	46
PID 1788 wrote to memory of 1992	1788	intoSessionbrokermonitordhcpWinRefnet.exe	48
PID 1788 wrote to memory of 1992	1788	intoSessionbrokermonitordhcpWinRefnet.exe	48
PID 1788 wrote to memory of 1992	1788	intoSessionbrokermonitordhcpWinRefnet.exe	48

C:\Users\Admin\AppData\Local\Temp\05AB720BBE85744CF1CBDAB2AA91BCFF.exe
"C:\Users\Admin\AppData\Local\Temp\05AB720BBE85744CF1CBDAB2AA91BCFF.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1984
- C:\Windows\SysWOW64\WScript.exe
  "C:\Windows\System32\WScript.exe" "C:\intoSessionbrokermonitordhcp\W9fT01B.vbe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1732
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c ""C:\intoSessionbrokermonitordhcp\7uOfG5dY.bat" "
    3⤵
    - Loads dropped DLL
    - Suspicious use of WriteProcessMemory
    PID:1072
  - - C:\intoSessionbrokermonitordhcp\intoSessionbrokermonitordhcpWinRefnet.exe
      "C:\intoSessionbrokermonitordhcp\intoSessionbrokermonitordhcpWinRefnet.exe"
      4⤵
      Executes dropped EXE
      Drops file in System32 directory
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of WriteProcessMemory
      PID:1788
    - - C:\Windows\system32\schtasks.exe
        
        "schtasks" /create /tn "dwm" /sc ONLOGON /tr "'C:\PerfLogs\Admin\dwm.exe'" /rl HIGHEST /f
        5⤵
        Creates scheduled task(s)
        
        PID:1256
    - - C:\Windows\system32\schtasks.exe
        
        "schtasks" /create /tn "WmiPrvSE" /sc ONLOGON /tr "'C:\Windows\System32\wbem\ssdpsrv\WmiPrvSE.exe'" /rl HIGHEST /f
        5⤵
        Creates scheduled task(s)
        
        PID:1504
    - - C:\Windows\system32\schtasks.exe
        
        "schtasks" /create /tn "conhost" /sc ONLOGON /tr "'C:\Windows\System32\lpk\conhost.exe'" /rl HIGHEST /f
        5⤵
        Creates scheduled task(s)
        
        PID:1056
    - - C:\Windows\system32\schtasks.exe
        
        "schtasks" /create /tn "taskhost" /sc ONLOGON /tr "'C:\Windows\System32\KBDFR\taskhost.exe'" /rl HIGHEST /f
        5⤵
        Creates scheduled task(s)
        
        PID:1468
    - - C:\Windows\system32\schtasks.exe
        
        "schtasks" /create /tn "conhost" /sc ONLOGON /tr "'C:\Windows\System32\api-ms-win-core-libraryloader-l1-1-0\conhost.exe'" /rl HIGHEST /f
        5⤵
        Creates scheduled task(s)
        
        PID:1132
    - - C:\Windows\system32\schtasks.exe
        
        "schtasks" /create /tn "spoolsv" /sc ONLOGON /tr "'C:\Windows\System32\C_437\spoolsv.exe'" /rl HIGHEST /f
        5⤵
        Creates scheduled task(s)
        
        PID:1368
    - - C:\Windows\system32\schtasks.exe
        
        "schtasks" /create /tn "explorer" /sc ONLOGON /tr "'C:\Recovery\34107922-98a6-11eb-a15f-ea91f6580701\explorer.exe'" /rl HIGHEST /f
        5⤵
        Creates scheduled task(s)
        
        PID:904
    - - C:\Windows\System32\C_437\spoolsv.exe
        
        "C:\Windows\System32\C_437\spoolsv.exe"
        5⤵
        Executes dropped EXE
        Suspicious behavior: EnumeratesProcesses
        Suspicious behavior: GetForegroundWindowSpam
        Suspicious use of AdjustPrivilegeToken
        
        PID:1992

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

Credentials in Files

T1081

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1788-76-0x000000001ABD6000-0x000000001ABF5000-memory.dmp

Download

memory/1788-75-0x000000001ABF5000-0x000000001ABF6000-memory.dmp

Download

memory/1788-73-0x000000001ABD0000-0x000000001ABD2000-memory.dmp

Download

memory/1788-74-0x00000000001B0000-0x00000000001B1000-memory.dmp

Download

memory/1788-70-0x0000000000FC0000-0x0000000000FC1000-memory.dmp

Download

memory/1984-59-0x00000000767B1000-0x00000000767B3000-memory.dmp

Download

memory/1992-87-0x0000000000020000-0x0000000000021000-memory.dmp

Download

memory/1992-91-0x0000000000685000-0x0000000000686000-memory.dmp

Download

memory/1992-90-0x0000000000660000-0x0000000000662000-memory.dmp

Download

memory/1992-92-0x0000000000666000-0x0000000000685000-memory.dmp

Download

memory/1992-93-0x0000000000686000-0x0000000000687000-memory.dmp

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