Overview

overview

10

Static

static

3

a8264147bc...02.exe

windows7-x64

10

a8264147bc...02.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    149s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04-09-2024 14:49

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General

  • Target

    a8264147bc22a02d977fa5d57b3169ccbc313dc35ba2b788da0cb7dce84f0b02.exe

  • Size

    190KB

  • MD5

    62947f28aedffbba7b8424fa764d33ac

  • SHA1

    baca398418a7e83b07ae924694897428660f936a

  • SHA256

    a8264147bc22a02d977fa5d57b3169ccbc313dc35ba2b788da0cb7dce84f0b02

  • SHA512

    5be7ecc2c6ec5056cc9db02fb0e8f694154a55bafa96f2943ead5c2b0730ddbcb82739ea6b2769fb93fee62bc15a9b2bc30de24d90dcc40cc64be6186f2b9279

  • SSDEEP

    3072:aH+lBBpz9/vh9yx37T/xvyNvypa7spopsUyqpr3xFbQ:nBpz9/vh9yxrbxvyN/pdJtz

Score
10/10
tofseediscoveryevasionexecutionpersistenceprivilege_escalationtrojan

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Signatures

  • Tofsee

    Backdoor/botnet which carries out malicious activities based on commands from a C2 server.

    trojantofsee
  • Creates new service(s) 2 TTPs
    persistenceexecution
  • Modifies Windows Firewall 2 TTPs 1 IoCs
    evasion
  • Sets service image path in registry 2 TTPs 1 IoCs
    persistence
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Deletes itself 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Drops file in System32 directory 2 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Launches sc.exe 3 IoCs

    Sc.exe is a Windows utlilty to control services on the system.

  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Event Triggered Execution: Netsh Helper DLL 1 TTPs 3 IoCs

    Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.

    persistenceprivilege_escalation
  • System Location Discovery: System Language Discovery 1 TTPs 9 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

    discovery
  • Modifies data under HKEY_USERS 6 IoCs
  • Suspicious use of WriteProcessMemory 23 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a8264147bc22a02d977fa5d57b3169ccbc313dc35ba2b788da0cb7dce84f0b02.exe
    "C:\Users\Admin\AppData\Local\Temp\a8264147bc22a02d977fa5d57b3169ccbc313dc35ba2b788da0cb7dce84f0b02.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4936
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\lpgpgcvi\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:572
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\dmsdbqi.exe" C:\Windows\SysWOW64\lpgpgcvi\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:4528
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" create lpgpgcvi binPath= "C:\Windows\SysWOW64\lpgpgcvi\dmsdbqi.exe /d\"C:\Users\Admin\AppData\Local\Temp\a8264147bc22a02d977fa5d57b3169ccbc313dc35ba2b788da0cb7dce84f0b02.exe\"" type= own start= auto DisplayName= "wifi support"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:1208
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" description lpgpgcvi "wifi internet conection"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:3540
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" start lpgpgcvi
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2092
    • C:\Windows\SysWOW64\netsh.exe
      "C:\Windows\System32\netsh.exe" advfirewall firewall add rule name="Host-process for services of Windows" dir=in action=allow program="C:\Windows\SysWOW64\svchost.exe" enable=yes>nul
      2⤵
      • Modifies Windows Firewall
      • Event Triggered Execution: Netsh Helper DLL
      • System Location Discovery: System Language Discovery
      PID:3252
  • C:\Windows\SysWOW64\lpgpgcvi\dmsdbqi.exe
    C:\Windows\SysWOW64\lpgpgcvi\dmsdbqi.exe /d"C:\Users\Admin\AppData\Local\Temp\a8264147bc22a02d977fa5d57b3169ccbc313dc35ba2b788da0cb7dce84f0b02.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:264
    • C:\Windows\SysWOW64\svchost.exe
      svchost.exe
      2⤵
      • Sets service image path in registry
      • Deletes itself
      • Drops file in System32 directory
      • System Location Discovery: System Language Discovery
      • Modifies data under HKEY_USERS
      PID:4060

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

System Services

1
T1569

Service Execution

1
T1569.002

Persistence

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Create or Modify System Process

2
T1543

Windows Service

2
T1543.003

Event Triggered Execution

1
T1546

Netsh Helper DLL

1
T1546.007

Privilege Escalation

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Create or Modify System Process

2
T1543

Windows Service

2
T1543.003

Event Triggered Execution

1
T1546

Netsh Helper DLL

1
T1546.007

Defense Evasion

Impair Defenses

1
T1562

Disable or Modify System Firewall

1
T1562.004

Modify Registry

1
T1112

Credential Access

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

System Location Discovery

1
T1614

System Language Discovery

1
T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\dmsdbqi.exe
    Filesize

    14.5MB

    MD5

    d5c1b0519a0c9be64837770fd5545fdd

    SHA1

    576902a69290c286383268e5beb9f2bef86a0310

    SHA256

    2a66fc02b20c322b03a994e6be4b523be9429e6cbd83d93de65635609fc5a626

    SHA512

    e6e488ece25e11198c1a61fec64529e0ac7b2099104f2ae9651157c0271195ea09e6f8f22af974310255703e7c708982ae80635fc012ceaace1f0007fb5d91fa

    Download Submit

  • memory/264-12-0x0000000000400000-0x0000000000437000-memory.dmp

    Filesize

    220KB

    Download

  • memory/264-16-0x0000000000400000-0x0000000000437000-memory.dmp

    Filesize

    220KB

    Download

  • memory/264-13-0x0000000000400000-0x0000000000437000-memory.dmp

    Filesize

    220KB

    Download

  • memory/264-11-0x0000000000400000-0x0000000000437000-memory.dmp

    Filesize

    220KB

    Download

  • memory/4060-48-0x00000000019F0000-0x00000000019F5000-memory.dmp

    Filesize

    20KB

    Download

  • memory/4060-45-0x00000000019E0000-0x00000000019F0000-memory.dmp

    Filesize

    64KB

    Download

  • memory/4060-56-0x00000000025D0000-0x00000000025D7000-memory.dmp

    Filesize

    28KB

    Download

  • memory/4060-24-0x0000000002200000-0x000000000240F000-memory.dmp

    Filesize

    2.1MB

    Download

  • memory/4060-25-0x00000000007F0000-0x00000000007F6000-memory.dmp

    Filesize

    24KB

    Download

  • memory/4060-14-0x0000000000320000-0x0000000000335000-memory.dmp

    Filesize

    84KB

    Download

  • memory/4060-28-0x00000000019E0000-0x00000000019F0000-memory.dmp

    Filesize

    64KB

    Download

  • memory/4060-18-0x0000000000320000-0x0000000000335000-memory.dmp

    Filesize

    84KB

    Download

  • memory/4060-19-0x0000000000320000-0x0000000000335000-memory.dmp

    Filesize

    84KB

    Download

  • memory/4060-47-0x00000000019E0000-0x00000000019F0000-memory.dmp

    Filesize

    64KB

    Download

  • memory/4060-35-0x00000000019E0000-0x00000000019F0000-memory.dmp

    Filesize

    64KB

    Download

  • memory/4060-21-0x0000000002200000-0x000000000240F000-memory.dmp

    Filesize

    2.1MB

    Download

  • memory/4060-52-0x0000000007100000-0x000000000750B000-memory.dmp

    Filesize

    4.0MB

    Download

  • memory/4060-55-0x0000000007100000-0x000000000750B000-memory.dmp

    Filesize

    4.0MB

    Download

  • memory/4060-51-0x00000000019F0000-0x00000000019F5000-memory.dmp

    Filesize

    20KB

    Download

  • memory/4060-31-0x00000000019E0000-0x00000000019F0000-memory.dmp

    Filesize

    64KB

    Download

  • memory/4060-46-0x00000000019E0000-0x00000000019F0000-memory.dmp

    Filesize

    64KB

    Download

  • memory/4060-32-0x00000000019E0000-0x00000000019F0000-memory.dmp

    Filesize

    64KB

    Download

  • memory/4060-44-0x00000000019E0000-0x00000000019F0000-memory.dmp

    Filesize

    64KB

    Download

  • memory/4060-43-0x00000000019E0000-0x00000000019F0000-memory.dmp

    Filesize

    64KB

    Download

  • memory/4060-42-0x00000000019E0000-0x00000000019F0000-memory.dmp

    Filesize

    64KB

    Download

  • memory/4060-41-0x00000000019E0000-0x00000000019F0000-memory.dmp

    Filesize

    64KB

    Download

  • memory/4060-40-0x00000000019E0000-0x00000000019F0000-memory.dmp

    Filesize

    64KB

    Download

  • memory/4060-39-0x00000000019E0000-0x00000000019F0000-memory.dmp

    Filesize

    64KB

    Download

  • memory/4060-38-0x00000000019E0000-0x00000000019F0000-memory.dmp

    Filesize

    64KB

    Download

  • memory/4060-37-0x00000000019E0000-0x00000000019F0000-memory.dmp

    Filesize

    64KB

    Download

  • memory/4060-36-0x00000000019E0000-0x00000000019F0000-memory.dmp

    Filesize

    64KB

    Download

  • memory/4060-34-0x00000000019E0000-0x00000000019F0000-memory.dmp

    Filesize

    64KB

    Download

  • memory/4060-33-0x00000000019E0000-0x00000000019F0000-memory.dmp

    Filesize

    64KB

    Download

  • memory/4936-8-0x00000000004B0000-0x00000000004C3000-memory.dmp

    Filesize

    76KB

    Download

  • memory/4936-1-0x0000000000660000-0x0000000000760000-memory.dmp

    Filesize

    1024KB

    Download

  • memory/4936-2-0x00000000004B0000-0x00000000004C3000-memory.dmp

    Filesize

    76KB

    Download

  • memory/4936-3-0x0000000000400000-0x0000000000415000-memory.dmp

    Filesize

    84KB

    Download

  • memory/4936-7-0x0000000000400000-0x0000000000437000-memory.dmp

    Filesize

    220KB

    Download

  • memory/4936-9-0x0000000000400000-0x0000000000415000-memory.dmp

    Filesize

    84KB

    Download