46dc49be65d7165e2a6009854a4f27f0088230199e61e0555cb1bd266535874a

Analysis

max time kernel
130s
max time network
141s
platform
windows10_x64
resource
win10
submitted
11-08-2020 12:30

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General

Target

foo/f660284cb3574213a512e3f03ca9012b.exe

Score

8^/10

spyware

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
3776	tapi3.exe
3984	tapi3.exe

Loads dropped DLL 1 IoCs

pid	Process
3776	tapi3.exe

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

Data from Local System
T1005

Credentials in Files
T1081

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3776 set thread context of 3984	3776	tapi3.exe	68

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

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3140	3984	WerFault.exe	68

NSIS installer 6 IoCs

installer

resource	yara_rule
behavioral192/files/0x000200000001ad81-6.dat	nsis_installer_1
behavioral192/files/0x000200000001ad81-6.dat	nsis_installer_2
behavioral192/files/0x000200000001ad81-7.dat	nsis_installer_1
behavioral192/files/0x000200000001ad81-7.dat	nsis_installer_2
behavioral192/files/0x000200000001ad81-11.dat	nsis_installer_1
behavioral192/files/0x000200000001ad81-11.dat	nsis_installer_2

Suspicious behavior: EnumeratesProcesses 20 IoCs

pid	Process
3824	f660284cb3574213a512e3f03ca9012b.exe
3984	tapi3.exe
3984	tapi3.exe
3984	tapi3.exe
3984	tapi3.exe
3984	tapi3.exe
3984	tapi3.exe
3140	WerFault.exe
3140	WerFault.exe
3140	WerFault.exe
3140	WerFault.exe
3140	WerFault.exe
3140	WerFault.exe
3140	WerFault.exe
3140	WerFault.exe
3140	WerFault.exe
3140	WerFault.exe
3140	WerFault.exe
3140	WerFault.exe
3140	WerFault.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
3776	tapi3.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	3824	f660284cb3574213a512e3f03ca9012b.exe
Token: SeRestorePrivilege	3140	WerFault.exe
Token: SeBackupPrivilege	3140	WerFault.exe
Token: SeDebugPrivilege	3140	WerFault.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 3824 wrote to memory of 3776	3824	f660284cb3574213a512e3f03ca9012b.exe	67
PID 3824 wrote to memory of 3776	3824	f660284cb3574213a512e3f03ca9012b.exe	67
PID 3824 wrote to memory of 3776	3824	f660284cb3574213a512e3f03ca9012b.exe	67
PID 3776 wrote to memory of 3984	3776	tapi3.exe	68
PID 3776 wrote to memory of 3984	3776	tapi3.exe	68
PID 3776 wrote to memory of 3984	3776	tapi3.exe	68
PID 3776 wrote to memory of 3984	3776	tapi3.exe	68

C:\Users\Admin\AppData\Local\Temp\foo\f660284cb3574213a512e3f03ca9012b.exe
"C:\Users\Admin\AppData\Local\Temp\foo\f660284cb3574213a512e3f03ca9012b.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3824
- C:\Users\Admin\AppData\Local\Temp\tapi3.exe
  "C:\Users\Admin\AppData\Local\Temp\tapi3.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of SetThreadContext
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of WriteProcessMemory
  PID:3776
- - C:\Users\Admin\AppData\Local\Temp\tapi3.exe
    "C:\Users\Admin\AppData\Local\Temp\tapi3.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    PID:3984
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3984 -s 1124
      4⤵
      Program crash
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:3140

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

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/3140-14-0x0000000004110000-0x0000000004111000-memory.dmp

Filesize
4KB

Download
memory/3140-23-0x00000000049C0000-0x00000000049C1000-memory.dmp

Filesize
4KB

Download
memory/3824-1-0x0000000073B00000-0x00000000741EE000-memory.dmp

Filesize
6.9MB

Download
memory/3824-2-0x0000000004DF0000-0x0000000004EC9000-memory.dmp

Filesize
868KB

Download
memory/3824-3-0x0000000004ED0000-0x0000000004ED1000-memory.dmp

Filesize
4KB

Download
memory/3824-4-0x0000000004CF0000-0x0000000004DC7000-memory.dmp

Filesize
860KB

Download
memory/3824-0-0x0000000002450000-0x0000000002451000-memory.dmp

Filesize
4KB

Download
memory/3984-12-0x0000000000400000-0x0000000000487000-memory.dmp

Filesize
540KB

Download
memory/3984-9-0x0000000000400000-0x0000000000487000-memory.dmp

Filesize
540KB

Download