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Overview

overview

10

Static

static

3

0a00671012...47.exe

windows7-x64

10

0a00671012...47.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    148s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    27/01/2025, 18:46 UTC

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General

  • Target

    0a00671012b4cc6d328abe79ae061427f25595a5996d78dba6522d13abb23647.exe

  • Size

    10.7MB

  • MD5

    27d42e4a1a5137d5a8171fa0998feff6

  • SHA1

    c286cbcc0c3840a5c086016a9f432acdb2466bf5

  • SHA256

    0a00671012b4cc6d328abe79ae061427f25595a5996d78dba6522d13abb23647

  • SHA512

    2df5b37a8d89a632b780c2e01c0407216b66e2c9495b55d5fb7f984d6eaad409d2a1cc1f6c25f4c26b7e0c13cc89731d0f7baef1f781da642e31cea358c422db

  • SSDEEP

    3072:WcSKLbut7BWLMcD/FHNKZuKqtyONJvq4H6gGIvuFHrHtIxJXA4/a9t/a9t/a9t/6:gKHOWwe/RNKkK0vNdq4HZG0Wr2u

Score
10/10
tofseedefense_evasiondiscoveryexecutionpersistenceprivilege_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
  • Tofsee family
    tofsee
  • Creates new service(s) 2 TTPs
    persistenceexecution
  • Modifies Windows Firewall 2 TTPs 1 IoCs
    defense_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
  • 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
  • Suspicious use of WriteProcessMemory 23 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\0a00671012b4cc6d328abe79ae061427f25595a5996d78dba6522d13abb23647.exe
    "C:\Users\Admin\AppData\Local\Temp\0a00671012b4cc6d328abe79ae061427f25595a5996d78dba6522d13abb23647.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1116
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\kzkcasdy\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:1384
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ehalluvv.exe" C:\Windows\SysWOW64\kzkcasdy\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:5080
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" create kzkcasdy binPath= "C:\Windows\SysWOW64\kzkcasdy\ehalluvv.exe /d\"C:\Users\Admin\AppData\Local\Temp\0a00671012b4cc6d328abe79ae061427f25595a5996d78dba6522d13abb23647.exe\"" type= own start= auto DisplayName= "wifi support"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:4240
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" description kzkcasdy "wifi internet conection"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2140
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" start kzkcasdy
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:1956
    • 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:1996
  • C:\Windows\SysWOW64\kzkcasdy\ehalluvv.exe
    C:\Windows\SysWOW64\kzkcasdy\ehalluvv.exe /d"C:\Users\Admin\AppData\Local\Temp\0a00671012b4cc6d328abe79ae061427f25595a5996d78dba6522d13abb23647.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3300
    • C:\Windows\SysWOW64\svchost.exe
      svchost.exe
      2⤵
      • Sets service image path in registry
      • Deletes itself
      • System Location Discovery: System Language Discovery
      PID:2968

Network

  • flag-us
    DNS
    97.17.167.52.in-addr.arpa
    Remote address:
    8.8.8.8:53
    Request
    97.17.167.52.in-addr.arpa
    IN PTR
    Response
  • flag-us
    DNS
    73.144.22.2.in-addr.arpa
    Remote address:
    8.8.8.8:53
    Request
    73.144.22.2.in-addr.arpa
    IN PTR
    Response
    73.144.22.2.in-addr.arpa
    IN PTR
    a2-22-144-73deploystaticakamaitechnologiescom
  • flag-us
    DNS
    167.173.78.104.in-addr.arpa
    Remote address:
    8.8.8.8:53
    Request
    167.173.78.104.in-addr.arpa
    IN PTR
    Response
    167.173.78.104.in-addr.arpa
    IN PTR
    a104-78-173-167deploystaticakamaitechnologiescom
  • flag-us
    DNS
    microsoft.com
    svchost.exe
    Remote address:
    8.8.8.8:53
    Request
    microsoft.com
    IN A
    Response
    microsoft.com
    IN A
    20.112.250.133
    microsoft.com
    IN A
    20.231.239.246
    microsoft.com
    IN A
    20.236.44.162
    microsoft.com
    IN A
    20.70.246.20
    microsoft.com
    IN A
    20.76.201.171
  • flag-us
    DNS
    microsoft.com
    svchost.exe
    Remote address:
    8.8.8.8:53
    Request
    microsoft.com
    IN MX
    Response
    microsoft.com
    IN MX
    microsoft-commail protectionoutlook�
  • flag-us
    DNS
    microsoft-com.mail.protection.outlook.com
    svchost.exe
    Remote address:
    8.8.8.8:53
    Request
    microsoft-com.mail.protection.outlook.com
    IN A
    Response
    microsoft-com.mail.protection.outlook.com
    IN A
    52.101.8.49
    microsoft-com.mail.protection.outlook.com
    IN A
    52.101.40.26
    microsoft-com.mail.protection.outlook.com
    IN A
    52.101.42.0
    microsoft-com.mail.protection.outlook.com
    IN A
    52.101.11.0
  • flag-us
    DNS
    133.250.112.20.in-addr.arpa
    Remote address:
    8.8.8.8:53
    Request
    133.250.112.20.in-addr.arpa
    IN PTR
    Response
  • flag-us
    DNS
    vanaheim.cn
    svchost.exe
    Remote address:
    8.8.8.8:53
    Request
    vanaheim.cn
    IN A
    Response
    vanaheim.cn
    IN A
    213.178.155.86
  • flag-us
    DNS
    104.219.191.52.in-addr.arpa
    Remote address:
    8.8.8.8:53
    Request
    104.219.191.52.in-addr.arpa
    IN PTR
    Response
  • flag-us
    DNS
    104.219.191.52.in-addr.arpa
    Remote address:
    8.8.8.8:53
    Request
    104.219.191.52.in-addr.arpa
    IN PTR
  • flag-us
    DNS
    58.55.71.13.in-addr.arpa
    Remote address:
    8.8.8.8:53
    Request
    58.55.71.13.in-addr.arpa
    IN PTR
    Response
  • flag-us
    DNS
    58.55.71.13.in-addr.arpa
    Remote address:
    8.8.8.8:53
    Request
    58.55.71.13.in-addr.arpa
    IN PTR
  • flag-us
    DNS
    yahoo.com
    svchost.exe
    Remote address:
    8.8.8.8:53
    Request
    yahoo.com
    IN MX
    Response
    yahoo.com
    IN MX
    mta7am0yahoodnsnet
    yahoo.com
    IN MX
    mta5�.
    yahoo.com
    IN MX
    mta6�.
  • flag-us
    DNS
    yahoo.com
    svchost.exe
    Remote address:
    8.8.8.8:53
    Request
    yahoo.com
    IN MX
  • flag-us
    DNS
    mta7.am0.yahoodns.net
    svchost.exe
    Remote address:
    8.8.8.8:53
    Request
    mta7.am0.yahoodns.net
    IN A
    Response
    mta7.am0.yahoodns.net
    IN A
    67.195.228.110
    mta7.am0.yahoodns.net
    IN A
    98.136.96.74
    mta7.am0.yahoodns.net
    IN A
    67.195.228.106
    mta7.am0.yahoodns.net
    IN A
    67.195.228.111
    mta7.am0.yahoodns.net
    IN A
    67.195.204.72
    mta7.am0.yahoodns.net
    IN A
    98.136.96.75
    mta7.am0.yahoodns.net
    IN A
    67.195.204.77
    mta7.am0.yahoodns.net
    IN A
    98.136.96.91
  • flag-us
    DNS
    212.20.149.52.in-addr.arpa
    Remote address:
    8.8.8.8:53
    Request
    212.20.149.52.in-addr.arpa
    IN PTR
    Response
  • flag-us
    DNS
    206.23.85.13.in-addr.arpa
    Remote address:
    8.8.8.8:53
    Request
    206.23.85.13.in-addr.arpa
    IN PTR
    Response
  • flag-us
    DNS
    206.23.85.13.in-addr.arpa
    Remote address:
    8.8.8.8:53
    Request
    206.23.85.13.in-addr.arpa
    IN PTR
  • flag-us
    DNS
    70.252.19.2.in-addr.arpa
    Remote address:
    8.8.8.8:53
    Request
    70.252.19.2.in-addr.arpa
    IN PTR
    Response
    70.252.19.2.in-addr.arpa
    IN PTR
    a2-19-252-70deploystaticakamaitechnologiescom
  • flag-us
    DNS
    google.com
    svchost.exe
    Remote address:
    8.8.8.8:53
    Request
    google.com
    IN MX
    Response
    google.com
    IN MX
    smtp�
  • flag-us
    DNS
    google.com
    svchost.exe
    Remote address:
    8.8.8.8:53
    Request
    google.com
    IN MX
  • flag-us
    DNS
    google.com
    svchost.exe
    Remote address:
    8.8.8.8:53
    Request
    google.com
    IN MX
  • flag-us
    DNS
    google.com
    svchost.exe
    Remote address:
    8.8.8.8:53
    Request
    google.com
    IN MX
  • flag-us
    DNS
    smtp.google.com
    svchost.exe
    Remote address:
    8.8.8.8:53
    Request
    smtp.google.com
    IN A
    Response
    smtp.google.com
    IN A
    64.233.184.26
    smtp.google.com
    IN A
    142.251.168.26
    smtp.google.com
    IN A
    64.233.184.27
    smtp.google.com
    IN A
    142.251.168.27
    smtp.google.com
    IN A
    142.250.110.26
  • flag-us
    DNS
    182.129.81.91.in-addr.arpa
    Remote address:
    8.8.8.8:53
    Request
    182.129.81.91.in-addr.arpa
    IN PTR
    Response
  • flag-us
    DNS
    mail.ru
    svchost.exe
    Remote address:
    8.8.8.8:53
    Request
    mail.ru
    IN MX
    Response
    mail.ru
    IN MX
    mxs�
  • flag-us
    DNS
    mxs.mail.ru
    svchost.exe
    Remote address:
    8.8.8.8:53
    Request
    mxs.mail.ru
    IN A
    Response
    mxs.mail.ru
    IN A
    94.100.180.31
    mxs.mail.ru
    IN A
    217.69.139.150
  • flag-us
    DNS
    43.229.111.52.in-addr.arpa
    Remote address:
    8.8.8.8:53
    Request
    43.229.111.52.in-addr.arpa
    IN PTR
    Response
  • flag-us
    DNS
    jotunheim.name
    svchost.exe
    Remote address:
    8.8.8.8:53
    Request
    jotunheim.name
    IN A
    Response
    jotunheim.name
    IN A
    80.66.75.11
  • flag-us
    DNS
    9.179.89.13.in-addr.arpa
    Remote address:
    8.8.8.8:53
    Request
    9.179.89.13.in-addr.arpa
    IN PTR
    Response
  • 20.112.250.133:80
    microsoft.com
    svchost.exe
    190 B
     92 B
     4
    2
  • 52.101.8.49:25
    microsoft-com.mail.protection.outlook.com
    svchost.exe
    260 B
     5
  • 213.178.155.86:443
    vanaheim.cn
    svchost.exe
    260 B
     5
  • 67.195.228.110:25
    mta7.am0.yahoodns.net
    svchost.exe
    260 B
     5
  • 213.178.155.86:443
    vanaheim.cn
    svchost.exe
    260 B
     5
  • 64.233.184.26:25
    smtp.google.com
    svchost.exe
    260 B
     5
  • 213.178.155.86:443
    vanaheim.cn
    svchost.exe
    260 B
     5
  • 94.100.180.31:25
    mxs.mail.ru
    svchost.exe
    260 B
     5
  • 213.178.155.86:443
    vanaheim.cn
    svchost.exe
    260 B
     5
  • 213.178.155.86:443
    vanaheim.cn
    svchost.exe
    260 B
     5
  • 80.66.75.11:443
    jotunheim.name
    svchost.exe
    156 B
     3
  • 8.8.8.8:53
    97.17.167.52.in-addr.arpa
    dns
    71 B
     145 B
     1
    1

    DNS Request

    97.17.167.52.in-addr.arpa

  • 8.8.8.8:53
    73.144.22.2.in-addr.arpa
    dns
    70 B
     133 B
     1
    1

    DNS Request

    73.144.22.2.in-addr.arpa

  • 8.8.8.8:53
    167.173.78.104.in-addr.arpa
    dns
    73 B
     139 B
     1
    1

    DNS Request

    167.173.78.104.in-addr.arpa

  • 8.8.8.8:53
    microsoft.com
    dns
    svchost.exe
    59 B
     139 B
     1
    1

    DNS Request

    microsoft.com

    DNS Response

    20.112.250.133
    20.231.239.246
    20.236.44.162
    20.70.246.20
    20.76.201.171

  • 8.8.8.8:53
    microsoft.com
    dns
    svchost.exe
    59 B
     113 B
     1
    1

    DNS Request

    microsoft.com

  • 8.8.8.8:53
    microsoft-com.mail.protection.outlook.com
    dns
    svchost.exe
    87 B
     151 B
     1
    1

    DNS Request

    microsoft-com.mail.protection.outlook.com

    DNS Response

    52.101.8.49
    52.101.40.26
    52.101.42.0
    52.101.11.0

  • 8.8.8.8:53
    133.250.112.20.in-addr.arpa
    dns
    73 B
     159 B
     1
    1

    DNS Request

    133.250.112.20.in-addr.arpa

  • 8.8.8.8:53
    vanaheim.cn
    dns
    svchost.exe
    57 B
     73 B
     1
    1

    DNS Request

    vanaheim.cn

    DNS Response

    213.178.155.86

  • 8.8.8.8:53
    104.219.191.52.in-addr.arpa
    dns
    146 B
     147 B
     2
    1

    DNS Request

    104.219.191.52.in-addr.arpa

    DNS Request

    104.219.191.52.in-addr.arpa

  • 8.8.8.8:53
    58.55.71.13.in-addr.arpa
    dns
    140 B
     144 B
     2
    1

    DNS Request

    58.55.71.13.in-addr.arpa

    DNS Request

    58.55.71.13.in-addr.arpa

  • 8.8.8.8:53
    yahoo.com
    dns
    svchost.exe
    110 B
     134 B
     2
    1

    DNS Request

    yahoo.com

    DNS Request

    yahoo.com

  • 8.8.8.8:53
    mta7.am0.yahoodns.net
    dns
    svchost.exe
    67 B
     195 B
     1
    1

    DNS Request

    mta7.am0.yahoodns.net

    DNS Response

    67.195.228.110
    98.136.96.74
    67.195.228.106
    67.195.228.111
    67.195.204.72
    98.136.96.75
    67.195.204.77
    98.136.96.91

  • 8.8.8.8:53
    212.20.149.52.in-addr.arpa
    dns
    72 B
     146 B
     1
    1

    DNS Request

    212.20.149.52.in-addr.arpa

  • 8.8.8.8:53
    206.23.85.13.in-addr.arpa
    dns
    142 B
     145 B
     2
    1

    DNS Request

    206.23.85.13.in-addr.arpa

    DNS Request

    206.23.85.13.in-addr.arpa

  • 8.8.8.8:53
    70.252.19.2.in-addr.arpa
    dns
    70 B
     133 B
     1
    1

    DNS Request

    70.252.19.2.in-addr.arpa

  • 8.8.8.8:53
    google.com
    dns
    svchost.exe
    224 B
     77 B
     4
    1

    DNS Request

    google.com

    DNS Request

    google.com

    DNS Request

    google.com

    DNS Request

    google.com

  • 8.8.8.8:53
    smtp.google.com
    dns
    svchost.exe
    61 B
     141 B
     1
    1

    DNS Request

    smtp.google.com

    DNS Response

    64.233.184.26
    142.251.168.26
    64.233.184.27
    142.251.168.27
    142.250.110.26

  • 8.8.8.8:53
    182.129.81.91.in-addr.arpa
    dns
    72 B
     147 B
     1
    1

    DNS Request

    182.129.81.91.in-addr.arpa

  • 8.8.8.8:53
    mail.ru
    dns
    svchost.exe
    53 B
     73 B
     1
    1

    DNS Request

    mail.ru

  • 8.8.8.8:53
    mxs.mail.ru
    dns
    svchost.exe
    57 B
     89 B
     1
    1

    DNS Request

    mxs.mail.ru

    DNS Response

    94.100.180.31
    217.69.139.150

  • 8.8.8.8:53
    43.229.111.52.in-addr.arpa
    dns
    72 B
     158 B
     1
    1

    DNS Request

    43.229.111.52.in-addr.arpa

  • 8.8.8.8:53
    jotunheim.name
    dns
    svchost.exe
    60 B
     76 B
     1
    1

    DNS Request

    jotunheim.name

    DNS Response

    80.66.75.11

  • 8.8.8.8:53
    9.179.89.13.in-addr.arpa
    dns
    70 B
     144 B
     1
    1

    DNS Request

    9.179.89.13.in-addr.arpa

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

Replay Monitor

Loading Replay Monitor...

Downloads

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

    10.1MB

    MD5

    8469d73bb982fc46ebb8090ddd1cb20a

    SHA1

    81e94ec2c9dd4d3eb46fa2627d3dae8454ac2f4b

    SHA256

    d598bb11a33476a7fb5f74e218bcc34ae7976ba49afc16c7c1959df306558dfa

    SHA512

    a9fb5849b1d2595cfc53485e3b4071a63100077ad908233579c88f307c069bd0cb5c80bc0e4d8e18ccc6055d072cc599e46c7cade008bc13e3bce137e30df955

    Download Submit

  • memory/1116-1-0x0000000002620000-0x0000000002720000-memory.dmp

    Filesize

    1024KB

    Download

  • memory/1116-2-0x0000000002540000-0x0000000002553000-memory.dmp

    Filesize

    76KB

    Download

  • memory/1116-3-0x0000000000400000-0x0000000000415000-memory.dmp

    Filesize

    84KB

    Download

  • memory/1116-9-0x0000000000400000-0x0000000000415000-memory.dmp

    Filesize

    84KB

    Download

  • memory/1116-8-0x0000000002540000-0x0000000002553000-memory.dmp

    Filesize

    76KB

    Download

  • memory/1116-7-0x0000000000400000-0x0000000002284000-memory.dmp

    Filesize

    30.5MB

    Download

  • memory/2968-11-0x0000000000B80000-0x0000000000B95000-memory.dmp

    Filesize

    84KB

    Download

  • memory/2968-14-0x0000000000B80000-0x0000000000B95000-memory.dmp

    Filesize

    84KB

    Download

  • memory/2968-15-0x0000000000B80000-0x0000000000B95000-memory.dmp

    Filesize

    84KB

    Download

  • memory/3300-12-0x0000000000400000-0x0000000002284000-memory.dmp

    Filesize

    30.5MB

    Download

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