46dc49be65d7165e2a6009854a4f27f0088230199e61e0555cb1bd266535874a

Analysis

max time kernel
54s
max time network
71s
platform
windows7_x64
resource
win7
submitted
11-08-2020 12:30

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General

Target

foo/f660284cb3574213a512e3f03ca9012b.exe

Score

8^/10

discovery spyware

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
1848	tapi3.exe
1356	tapi3.exe

Loads dropped DLL 3 IoCs

pid	Process
1796	f660284cb3574213a512e3f03ca9012b.exe
1848	tapi3.exe
1848	tapi3.exe

Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
spyware

Data from Local System
T1005

Credentials in Files
T1081
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
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

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	ip-api.com

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1848 set thread context of 1356	1848	tapi3.exe	27

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

System Information Discovery
T1082

NSIS installer 10 IoCs

installer

resource	yara_rule
behavioral191/files/0x00040000000131bb-4.dat	nsis_installer_1
behavioral191/files/0x00040000000131bb-4.dat	nsis_installer_2
behavioral191/files/0x00040000000131bb-6.dat	nsis_installer_1
behavioral191/files/0x00040000000131bb-6.dat	nsis_installer_2
behavioral191/files/0x00040000000131bb-7.dat	nsis_installer_1
behavioral191/files/0x00040000000131bb-7.dat	nsis_installer_2
behavioral191/files/0x00040000000131bb-9.dat	nsis_installer_1
behavioral191/files/0x00040000000131bb-9.dat	nsis_installer_2
behavioral191/files/0x00040000000131bb-12.dat	nsis_installer_1
behavioral191/files/0x00040000000131bb-12.dat	nsis_installer_2

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	tapi3.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	tapi3.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
1796	f660284cb3574213a512e3f03ca9012b.exe
1356	tapi3.exe
1356	tapi3.exe
1356	tapi3.exe
1356	tapi3.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
1848	tapi3.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1796	f660284cb3574213a512e3f03ca9012b.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 1796 wrote to memory of 1848	1796	f660284cb3574213a512e3f03ca9012b.exe	24
PID 1796 wrote to memory of 1848	1796	f660284cb3574213a512e3f03ca9012b.exe	24
PID 1796 wrote to memory of 1848	1796	f660284cb3574213a512e3f03ca9012b.exe	24
PID 1796 wrote to memory of 1848	1796	f660284cb3574213a512e3f03ca9012b.exe	24
PID 1848 wrote to memory of 1356	1848	tapi3.exe	27
PID 1848 wrote to memory of 1356	1848	tapi3.exe	27
PID 1848 wrote to memory of 1356	1848	tapi3.exe	27
PID 1848 wrote to memory of 1356	1848	tapi3.exe	27
PID 1848 wrote to memory of 1356	1848	tapi3.exe	27
PID 1356 wrote to memory of 1252	1356	tapi3.exe	30
PID 1356 wrote to memory of 1252	1356	tapi3.exe	30
PID 1356 wrote to memory of 1252	1356	tapi3.exe	30
PID 1356 wrote to memory of 1252	1356	tapi3.exe	30

C:\Users\Admin\AppData\Local\Temp\foo\f660284cb3574213a512e3f03ca9012b.exe
"C:\Users\Admin\AppData\Local\Temp\foo\f660284cb3574213a512e3f03ca9012b.exe"
1⤵
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1796
- 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:1848
- - C:\Users\Admin\AppData\Local\Temp\tapi3.exe
    "C:\Users\Admin\AppData\Local\Temp\tapi3.exe"
    3⤵
    - Executes dropped EXE
    - Checks processor information in registry
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:1356
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe" rd /s /q C:\ProgramData\9QIRAPIGSY5C7S
      4⤵
      PID:1252

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

T1081

Discovery

Query Registry

T1012

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/1356-10-0x0000000000400000-0x0000000000487000-memory.dmp

Filesize
540KB

Download
memory/1356-13-0x0000000000400000-0x0000000000487000-memory.dmp

Filesize
540KB

Download
memory/1652-14-0x000007FEF7DE0000-0x000007FEF805A000-memory.dmp

Filesize
2.5MB

Download
memory/1796-3-0x0000000004920000-0x00000000049F7000-memory.dmp

Filesize
860KB

Download
memory/1796-2-0x0000000004A60000-0x0000000004B39000-memory.dmp

Filesize
868KB

Download
memory/1796-0-0x0000000001EA0000-0x0000000001EB1000-memory.dmp

Filesize
68KB

Download
memory/1796-1-0x0000000074090000-0x000000007477E000-memory.dmp

Filesize
6.9MB

Download