tofsee | bda0e8f7a8383b0026382daad8c123dc726a35c07810ea8dea97b30e969a816d

Analysis

max time kernel
150s
max time network
138s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
16-09-2024 20:11

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General

Target

artifact.exe
Size

12.5MB
MD5

412b77d817e242ec4cf2f5e1f319d301
SHA1

e5b8e55949b33a4f85057a392c86489a7a5d3497
SHA256

bda0e8f7a8383b0026382daad8c123dc726a35c07810ea8dea97b30e969a816d
SHA512

6b92e0f2f3b951cee55ebf5625ff8579c3f92c257c7882039e38c5019ead7f84ed792d97a78fe133fbe582eb070c5ddd00fbfce430f46dd422fdde738adae244
SSDEEP

3072:3BNmmPQhjS0HB3IdC3SXgqvfzzP+rTMGU5H8AH2RRRRRRRRRRRRRRRRRRRRRRRRP:R1PQh3HB4dCCXgQfwoF

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

176.111.174.19

defeatwax.ru

Signatures

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

Windows security bypass 2 TTPs 1 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\SysWOW64\gbhooes = "0"	svchost.exe

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
2540	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\gbhooes\ImagePath = "C:\\Windows\\SysWOW64\\gbhooes\\bqmzngir.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2060	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2640	bqmzngir.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2640 set thread context of 2060	2640	bqmzngir.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
2644	sc.exe
2868	sc.exe
2700	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 value enumerated	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key queried	\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	cmd.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	bqmzngir.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	artifact.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	cmd.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2216 wrote to memory of 2816	2216	artifact.exe	30
PID 2216 wrote to memory of 2816	2216	artifact.exe	30
PID 2216 wrote to memory of 2816	2216	artifact.exe	30
PID 2216 wrote to memory of 2816	2216	artifact.exe	30
PID 2216 wrote to memory of 2788	2216	artifact.exe	32
PID 2216 wrote to memory of 2788	2216	artifact.exe	32
PID 2216 wrote to memory of 2788	2216	artifact.exe	32
PID 2216 wrote to memory of 2788	2216	artifact.exe	32
PID 2216 wrote to memory of 2644	2216	artifact.exe	34
PID 2216 wrote to memory of 2644	2216	artifact.exe	34
PID 2216 wrote to memory of 2644	2216	artifact.exe	34
PID 2216 wrote to memory of 2644	2216	artifact.exe	34
PID 2216 wrote to memory of 2868	2216	artifact.exe	36
PID 2216 wrote to memory of 2868	2216	artifact.exe	36
PID 2216 wrote to memory of 2868	2216	artifact.exe	36
PID 2216 wrote to memory of 2868	2216	artifact.exe	36
PID 2216 wrote to memory of 2700	2216	artifact.exe	38
PID 2216 wrote to memory of 2700	2216	artifact.exe	38
PID 2216 wrote to memory of 2700	2216	artifact.exe	38
PID 2216 wrote to memory of 2700	2216	artifact.exe	38
PID 2216 wrote to memory of 2540	2216	artifact.exe	41
PID 2216 wrote to memory of 2540	2216	artifact.exe	41
PID 2216 wrote to memory of 2540	2216	artifact.exe	41
PID 2216 wrote to memory of 2540	2216	artifact.exe	41
PID 2640 wrote to memory of 2060	2640	bqmzngir.exe	43
PID 2640 wrote to memory of 2060	2640	bqmzngir.exe	43
PID 2640 wrote to memory of 2060	2640	bqmzngir.exe	43
PID 2640 wrote to memory of 2060	2640	bqmzngir.exe	43
PID 2640 wrote to memory of 2060	2640	bqmzngir.exe	43
PID 2640 wrote to memory of 2060	2640	bqmzngir.exe	43

C:\Users\Admin\AppData\Local\Temp\artifact.exe
"C:\Users\Admin\AppData\Local\Temp\artifact.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2216
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\gbhooes\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2816
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\bqmzngir.exe" C:\Windows\SysWOW64\gbhooes\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2788
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create gbhooes binPath= "C:\Windows\SysWOW64\gbhooes\bqmzngir.exe /d\"C:\Users\Admin\AppData\Local\Temp\artifact.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2644
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description gbhooes "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2868
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start gbhooes
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2700
- 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:2540

C:\Windows\SysWOW64\gbhooes\bqmzngir.exe
C:\Windows\SysWOW64\gbhooes\bqmzngir.exe /d"C:\Users\Admin\AppData\Local\Temp\artifact.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2640
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Windows security bypass
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2060

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

Disable or Modify Tools

T1562.001

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\bqmzngir.exe

Filesize
12.8MB

MD5
8d8dc800e1572e4ac5ad25ac0e5abbbe

SHA1
f573f1b789017c27effbde5c13372737bf2f275c

SHA256
78dfc137b31bcd9be022a384c6838e8ecc9bbce7c6f681334a0fbd925a1f1cce

SHA512
35d6cc2e1658505233d006a10f69340f0bced4d8b62c085cb9a930b6bfe629c72ca18ac14a83cad4ea40fdb629aacc00526671d9bc08ce8a22a2a4d937421600

Download Submit
memory/2060-11-0x0000000000100000-0x0000000000115000-memory.dmp

Filesize
84KB

Download
memory/2060-14-0x0000000000100000-0x0000000000115000-memory.dmp

Filesize
84KB

Download
memory/2060-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2060-17-0x0000000000100000-0x0000000000115000-memory.dmp

Filesize
84KB

Download
memory/2060-18-0x0000000000100000-0x0000000000115000-memory.dmp

Filesize
84KB

Download
memory/2216-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2216-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2216-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2216-9-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2216-8-0x0000000000400000-0x0000000002BF4000-memory.dmp

Filesize
40.0MB

Download
memory/2216-1-0x0000000002D60000-0x0000000002E60000-memory.dmp

Filesize
1024KB

Download
memory/2640-16-0x0000000000400000-0x0000000002BF4000-memory.dmp

Filesize
40.0MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads