tofsee | 16c9ee84cdf7aedda3f07d8899c88dd2cd10317df727544ce2a8cef537991d55

Analysis

max time kernel
144s
max time network
120s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
03-02-2025 03:24

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General

Target

2025-02-03_20f960c675cadf03a205fc0dbdac4140_mafia.exe
Size

12.5MB
MD5

20f960c675cadf03a205fc0dbdac4140
SHA1

cb72aabfde6377b55fd959f03d12a64cd0ce4b1a
SHA256

16c9ee84cdf7aedda3f07d8899c88dd2cd10317df727544ce2a8cef537991d55
SHA512

dc81b08e0d5c90db19940c8161ea693b98b1d4419c2519643acd61939be37ea122962d8ed9bbac1d521a8af2d254b5ee760e31baeb8f9e29074eaf89c49ef463
SSDEEP

24576:MpomTTN9tttttttttttttttttttttttttttttttttttttttttttttttttttttttE:oooG

Score

10^/10

tofsee defense_evasion discovery execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

43.231.4.7

lazystax.ru

Signatures

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

Windows security bypass 2 TTPs 1 IoCs

defense_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\dcomgzm = "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

defense_evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
1816	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\dcomgzm\ImagePath = "C:\\Windows\\SysWOW64\\dcomgzm\\kirsbxmi.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2932	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2948	kirsbxmi.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2948 set thread context of 2932	2948	kirsbxmi.exe	41

Launches sc.exe 3 IoCs

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

pid	Process
2244	sc.exe
2184	sc.exe
536	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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-02-03_20f960c675cadf03a205fc0dbdac4140_mafia.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	kirsbxmi.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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 1624 wrote to memory of 2760	1624	2025-02-03_20f960c675cadf03a205fc0dbdac4140_mafia.exe	30
PID 1624 wrote to memory of 2760	1624	2025-02-03_20f960c675cadf03a205fc0dbdac4140_mafia.exe	30
PID 1624 wrote to memory of 2760	1624	2025-02-03_20f960c675cadf03a205fc0dbdac4140_mafia.exe	30
PID 1624 wrote to memory of 2760	1624	2025-02-03_20f960c675cadf03a205fc0dbdac4140_mafia.exe	30
PID 1624 wrote to memory of 1272	1624	2025-02-03_20f960c675cadf03a205fc0dbdac4140_mafia.exe	32
PID 1624 wrote to memory of 1272	1624	2025-02-03_20f960c675cadf03a205fc0dbdac4140_mafia.exe	32
PID 1624 wrote to memory of 1272	1624	2025-02-03_20f960c675cadf03a205fc0dbdac4140_mafia.exe	32
PID 1624 wrote to memory of 1272	1624	2025-02-03_20f960c675cadf03a205fc0dbdac4140_mafia.exe	32
PID 1624 wrote to memory of 2244	1624	2025-02-03_20f960c675cadf03a205fc0dbdac4140_mafia.exe	34
PID 1624 wrote to memory of 2244	1624	2025-02-03_20f960c675cadf03a205fc0dbdac4140_mafia.exe	34
PID 1624 wrote to memory of 2244	1624	2025-02-03_20f960c675cadf03a205fc0dbdac4140_mafia.exe	34
PID 1624 wrote to memory of 2244	1624	2025-02-03_20f960c675cadf03a205fc0dbdac4140_mafia.exe	34
PID 1624 wrote to memory of 2184	1624	2025-02-03_20f960c675cadf03a205fc0dbdac4140_mafia.exe	36
PID 1624 wrote to memory of 2184	1624	2025-02-03_20f960c675cadf03a205fc0dbdac4140_mafia.exe	36
PID 1624 wrote to memory of 2184	1624	2025-02-03_20f960c675cadf03a205fc0dbdac4140_mafia.exe	36
PID 1624 wrote to memory of 2184	1624	2025-02-03_20f960c675cadf03a205fc0dbdac4140_mafia.exe	36
PID 1624 wrote to memory of 536	1624	2025-02-03_20f960c675cadf03a205fc0dbdac4140_mafia.exe	38
PID 1624 wrote to memory of 536	1624	2025-02-03_20f960c675cadf03a205fc0dbdac4140_mafia.exe	38
PID 1624 wrote to memory of 536	1624	2025-02-03_20f960c675cadf03a205fc0dbdac4140_mafia.exe	38
PID 1624 wrote to memory of 536	1624	2025-02-03_20f960c675cadf03a205fc0dbdac4140_mafia.exe	38
PID 2948 wrote to memory of 2932	2948	kirsbxmi.exe	41
PID 2948 wrote to memory of 2932	2948	kirsbxmi.exe	41
PID 2948 wrote to memory of 2932	2948	kirsbxmi.exe	41
PID 2948 wrote to memory of 2932	2948	kirsbxmi.exe	41
PID 1624 wrote to memory of 1816	1624	2025-02-03_20f960c675cadf03a205fc0dbdac4140_mafia.exe	42
PID 1624 wrote to memory of 1816	1624	2025-02-03_20f960c675cadf03a205fc0dbdac4140_mafia.exe	42
PID 1624 wrote to memory of 1816	1624	2025-02-03_20f960c675cadf03a205fc0dbdac4140_mafia.exe	42
PID 1624 wrote to memory of 1816	1624	2025-02-03_20f960c675cadf03a205fc0dbdac4140_mafia.exe	42
PID 2948 wrote to memory of 2932	2948	kirsbxmi.exe	41
PID 2948 wrote to memory of 2932	2948	kirsbxmi.exe	41

C:\Users\Admin\AppData\Local\Temp\2025-02-03_20f960c675cadf03a205fc0dbdac4140_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-03_20f960c675cadf03a205fc0dbdac4140_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1624
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\dcomgzm\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2760
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\kirsbxmi.exe" C:\Windows\SysWOW64\dcomgzm\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1272
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create dcomgzm binPath= "C:\Windows\SysWOW64\dcomgzm\kirsbxmi.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-03_20f960c675cadf03a205fc0dbdac4140_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2244
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description dcomgzm "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2184
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start dcomgzm
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:536
- 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:1816

C:\Windows\SysWOW64\dcomgzm\kirsbxmi.exe
C:\Windows\SysWOW64\dcomgzm\kirsbxmi.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-03_20f960c675cadf03a205fc0dbdac4140_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2948
- 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:2932

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\kirsbxmi.exe

Filesize
11.4MB

MD5
0c495af18c41d779e1ad885ead415762

SHA1
0d22b610bcda04248ba62d48a138eab86ab0e856

SHA256
5f41044b61826408afe519675dc97137ff02406f3e783a5af3276103562814ae

SHA512
415529e956db922fd2961b2c8bc68aa0ed17f11624ca0255f1b7b293584c97ed56c0df5e5e33f15c77b6b69aec271a505387b6eb27f7a6b0149b1d307cb93da9

Download Submit
memory/1624-15-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1624-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1624-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/1624-14-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/1624-1-0x0000000000550000-0x0000000000650000-memory.dmp

Filesize
1024KB

Download
memory/1624-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2932-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2932-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2932-8-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2932-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2932-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2948-16-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads