tofsee | 588c821f2829f6edb8188876d4a91648d3abd76cfa73d406d4d43e8f164dd36a

Analysis

max time kernel
49s
max time network
65s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
26/12/2024, 19:03

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General

Target

588c821f2829f6edb8188876d4a91648d3abd76cfa73d406d4d43e8f164dd36a.exe
Size

14.7MB
MD5

336993cb022096f6ec4044cadb51676a
SHA1

6fa127155546efc0deb7eefdf2e34f1f262c96b3
SHA256

588c821f2829f6edb8188876d4a91648d3abd76cfa73d406d4d43e8f164dd36a
SHA512

4c7b4f0a3dca13badc86f5d31ced92a85cea244a196bbeff2840e3e036bd6aa51b28adee8bdb07aee4b9d945353a6a295e5863ac922c6a37d7a0efd428818c86
SSDEEP

3072:FEtETlIcJpeAXch6LLTjjdQ4TdcUaOE9HBMwu6Z6O3Q7mKte7111111111111111:UEPX86zdndcfrHBgXfmKte

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

vanaheim.cn

jotunheim.name

Signatures

Tofsee
Backdoor/botnet which carries out malicious activities based on commands from a C2 server.
trojan tofsee
Tofsee family
tofsee
Creates new service(s) 2 TTPs
persistence execution

Windows Service
T1543.003

Service Execution
T1569.002

Modifies Windows Firewall 2 TTPs 1 IoCs

evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
2680	netsh.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\gimlqhgd\ImagePath = "C:\\Windows\\SysWOW64\\gimlqhgd\\vcjmbpis.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2152	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2724	vcjmbpis.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2724 set thread context of 2152	2724	vcjmbpis.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
2912	sc.exe
2252	sc.exe
2716	sc.exe

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

System Information Discovery
T1082

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.

persistence privilege_escalation

Netsh Helper DLL

T1546.007

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe

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

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vcjmbpis.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	588c821f2829f6edb8188876d4a91648d3abd76cfa73d406d4d43e8f164dd36a.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 1680 wrote to memory of 2908	1680	588c821f2829f6edb8188876d4a91648d3abd76cfa73d406d4d43e8f164dd36a.exe	30
PID 1680 wrote to memory of 2908	1680	588c821f2829f6edb8188876d4a91648d3abd76cfa73d406d4d43e8f164dd36a.exe	30
PID 1680 wrote to memory of 2908	1680	588c821f2829f6edb8188876d4a91648d3abd76cfa73d406d4d43e8f164dd36a.exe	30
PID 1680 wrote to memory of 2908	1680	588c821f2829f6edb8188876d4a91648d3abd76cfa73d406d4d43e8f164dd36a.exe	30
PID 1680 wrote to memory of 2820	1680	588c821f2829f6edb8188876d4a91648d3abd76cfa73d406d4d43e8f164dd36a.exe	32
PID 1680 wrote to memory of 2820	1680	588c821f2829f6edb8188876d4a91648d3abd76cfa73d406d4d43e8f164dd36a.exe	32
PID 1680 wrote to memory of 2820	1680	588c821f2829f6edb8188876d4a91648d3abd76cfa73d406d4d43e8f164dd36a.exe	32
PID 1680 wrote to memory of 2820	1680	588c821f2829f6edb8188876d4a91648d3abd76cfa73d406d4d43e8f164dd36a.exe	32
PID 1680 wrote to memory of 2912	1680	588c821f2829f6edb8188876d4a91648d3abd76cfa73d406d4d43e8f164dd36a.exe	34
PID 1680 wrote to memory of 2912	1680	588c821f2829f6edb8188876d4a91648d3abd76cfa73d406d4d43e8f164dd36a.exe	34
PID 1680 wrote to memory of 2912	1680	588c821f2829f6edb8188876d4a91648d3abd76cfa73d406d4d43e8f164dd36a.exe	34
PID 1680 wrote to memory of 2912	1680	588c821f2829f6edb8188876d4a91648d3abd76cfa73d406d4d43e8f164dd36a.exe	34
PID 1680 wrote to memory of 2252	1680	588c821f2829f6edb8188876d4a91648d3abd76cfa73d406d4d43e8f164dd36a.exe	36
PID 1680 wrote to memory of 2252	1680	588c821f2829f6edb8188876d4a91648d3abd76cfa73d406d4d43e8f164dd36a.exe	36
PID 1680 wrote to memory of 2252	1680	588c821f2829f6edb8188876d4a91648d3abd76cfa73d406d4d43e8f164dd36a.exe	36
PID 1680 wrote to memory of 2252	1680	588c821f2829f6edb8188876d4a91648d3abd76cfa73d406d4d43e8f164dd36a.exe	36
PID 1680 wrote to memory of 2716	1680	588c821f2829f6edb8188876d4a91648d3abd76cfa73d406d4d43e8f164dd36a.exe	38
PID 1680 wrote to memory of 2716	1680	588c821f2829f6edb8188876d4a91648d3abd76cfa73d406d4d43e8f164dd36a.exe	38
PID 1680 wrote to memory of 2716	1680	588c821f2829f6edb8188876d4a91648d3abd76cfa73d406d4d43e8f164dd36a.exe	38
PID 1680 wrote to memory of 2716	1680	588c821f2829f6edb8188876d4a91648d3abd76cfa73d406d4d43e8f164dd36a.exe	38
PID 1680 wrote to memory of 2680	1680	588c821f2829f6edb8188876d4a91648d3abd76cfa73d406d4d43e8f164dd36a.exe	40
PID 1680 wrote to memory of 2680	1680	588c821f2829f6edb8188876d4a91648d3abd76cfa73d406d4d43e8f164dd36a.exe	40
PID 1680 wrote to memory of 2680	1680	588c821f2829f6edb8188876d4a91648d3abd76cfa73d406d4d43e8f164dd36a.exe	40
PID 1680 wrote to memory of 2680	1680	588c821f2829f6edb8188876d4a91648d3abd76cfa73d406d4d43e8f164dd36a.exe	40
PID 2724 wrote to memory of 2152	2724	vcjmbpis.exe	43
PID 2724 wrote to memory of 2152	2724	vcjmbpis.exe	43
PID 2724 wrote to memory of 2152	2724	vcjmbpis.exe	43
PID 2724 wrote to memory of 2152	2724	vcjmbpis.exe	43
PID 2724 wrote to memory of 2152	2724	vcjmbpis.exe	43
PID 2724 wrote to memory of 2152	2724	vcjmbpis.exe	43

C:\Users\Admin\AppData\Local\Temp\588c821f2829f6edb8188876d4a91648d3abd76cfa73d406d4d43e8f164dd36a.exe
"C:\Users\Admin\AppData\Local\Temp\588c821f2829f6edb8188876d4a91648d3abd76cfa73d406d4d43e8f164dd36a.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1680
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\gimlqhgd\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2908
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\vcjmbpis.exe" C:\Windows\SysWOW64\gimlqhgd\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2820
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create gimlqhgd binPath= "C:\Windows\SysWOW64\gimlqhgd\vcjmbpis.exe /d\"C:\Users\Admin\AppData\Local\Temp\588c821f2829f6edb8188876d4a91648d3abd76cfa73d406d4d43e8f164dd36a.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2912
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description gimlqhgd "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2252
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start gimlqhgd
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2716
- 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:2680

C:\Windows\SysWOW64\gimlqhgd\vcjmbpis.exe
C:\Windows\SysWOW64\gimlqhgd\vcjmbpis.exe /d"C:\Users\Admin\AppData\Local\Temp\588c821f2829f6edb8188876d4a91648d3abd76cfa73d406d4d43e8f164dd36a.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2724
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2152

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

System Services

T1569

Service Execution

T1569.002

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Defense Evasion

Impair Defenses

T1562

Disable or Modify System Firewall

T1562.004

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\vcjmbpis.exe

Filesize
11.5MB

MD5
a7092f238b0c7c96d3865d4477535725

SHA1
384aa412b06ec55876965d3a5070cd99f12b2941

SHA256
8ab102ff9a86900675e2513efb68ec04a58f7d5df97e8ae481a19d7a84606f26

SHA512
682e0b10b16a3f93fb3d4cb7f52bd9ceb721e4b8115d916a8b6fac905b12b7b8ebdc25acab3f13edceca66b25d81f7cc33efe82e35868feee85b3ac609abcc0c

Download Submit
memory/1680-2-0x0000000000400000-0x0000000002B4A000-memory.dmp

Filesize
39.3MB

Download
memory/1680-3-0x0000000000400000-0x0000000002B4A000-memory.dmp

Filesize
39.3MB

Download
memory/1680-7-0x0000000000400000-0x0000000002B4A000-memory.dmp

Filesize
39.3MB

Download
memory/2152-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2152-12-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2152-11-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2152-9-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2152-16-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2724-15-0x0000000000400000-0x0000000002B4A000-memory.dmp

Filesize
39.3MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads