tofsee | 1afd64976f77dac3e5ea4be9921ee865d7ed13fabb7a1c9294b330f37b920554

Analysis

max time kernel
148s
max time network
127s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
21-01-2025 01:56

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General

Target

2025-01-21_9a14a0443a32965ebd6da88df49e252d_mafia.exe
Size

14.0MB
MD5

9a14a0443a32965ebd6da88df49e252d
SHA1

711984700b258d24d91a47ca17e36ef2cda4c4e3
SHA256

1afd64976f77dac3e5ea4be9921ee865d7ed13fabb7a1c9294b330f37b920554
SHA512

032eda656029d5912e9ffb03b4922c85395a28ddafcc3f5d0b3071ec58029cf02536dddc897f3ed7e0e39f76efc1a4345d4792a20c17d2b78e75e94b82851a3a
SSDEEP

49152:0qE0YKr3fYPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPn:0qtYc3

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\dshlfuos = "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
2756	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\dshlfuos\ImagePath = "C:\\Windows\\SysWOW64\\dshlfuos\\ulhofeim.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2244	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2436	ulhofeim.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2436 set thread context of 2244	2436	ulhofeim.exe	44

Launches sc.exe 3 IoCs

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

pid	Process
2736	sc.exe
2488	sc.exe
2744	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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ulhofeim.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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-01-21_9a14a0443a32965ebd6da88df49e252d_mafia.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 1104 wrote to memory of 2300	1104	2025-01-21_9a14a0443a32965ebd6da88df49e252d_mafia.exe	31
PID 1104 wrote to memory of 2300	1104	2025-01-21_9a14a0443a32965ebd6da88df49e252d_mafia.exe	31
PID 1104 wrote to memory of 2300	1104	2025-01-21_9a14a0443a32965ebd6da88df49e252d_mafia.exe	31
PID 1104 wrote to memory of 2300	1104	2025-01-21_9a14a0443a32965ebd6da88df49e252d_mafia.exe	31
PID 1104 wrote to memory of 2056	1104	2025-01-21_9a14a0443a32965ebd6da88df49e252d_mafia.exe	33
PID 1104 wrote to memory of 2056	1104	2025-01-21_9a14a0443a32965ebd6da88df49e252d_mafia.exe	33
PID 1104 wrote to memory of 2056	1104	2025-01-21_9a14a0443a32965ebd6da88df49e252d_mafia.exe	33
PID 1104 wrote to memory of 2056	1104	2025-01-21_9a14a0443a32965ebd6da88df49e252d_mafia.exe	33
PID 1104 wrote to memory of 2488	1104	2025-01-21_9a14a0443a32965ebd6da88df49e252d_mafia.exe	35
PID 1104 wrote to memory of 2488	1104	2025-01-21_9a14a0443a32965ebd6da88df49e252d_mafia.exe	35
PID 1104 wrote to memory of 2488	1104	2025-01-21_9a14a0443a32965ebd6da88df49e252d_mafia.exe	35
PID 1104 wrote to memory of 2488	1104	2025-01-21_9a14a0443a32965ebd6da88df49e252d_mafia.exe	35
PID 1104 wrote to memory of 2744	1104	2025-01-21_9a14a0443a32965ebd6da88df49e252d_mafia.exe	37
PID 1104 wrote to memory of 2744	1104	2025-01-21_9a14a0443a32965ebd6da88df49e252d_mafia.exe	37
PID 1104 wrote to memory of 2744	1104	2025-01-21_9a14a0443a32965ebd6da88df49e252d_mafia.exe	37
PID 1104 wrote to memory of 2744	1104	2025-01-21_9a14a0443a32965ebd6da88df49e252d_mafia.exe	37
PID 1104 wrote to memory of 2736	1104	2025-01-21_9a14a0443a32965ebd6da88df49e252d_mafia.exe	39
PID 1104 wrote to memory of 2736	1104	2025-01-21_9a14a0443a32965ebd6da88df49e252d_mafia.exe	39
PID 1104 wrote to memory of 2736	1104	2025-01-21_9a14a0443a32965ebd6da88df49e252d_mafia.exe	39
PID 1104 wrote to memory of 2736	1104	2025-01-21_9a14a0443a32965ebd6da88df49e252d_mafia.exe	39
PID 1104 wrote to memory of 2756	1104	2025-01-21_9a14a0443a32965ebd6da88df49e252d_mafia.exe	42
PID 1104 wrote to memory of 2756	1104	2025-01-21_9a14a0443a32965ebd6da88df49e252d_mafia.exe	42
PID 1104 wrote to memory of 2756	1104	2025-01-21_9a14a0443a32965ebd6da88df49e252d_mafia.exe	42
PID 1104 wrote to memory of 2756	1104	2025-01-21_9a14a0443a32965ebd6da88df49e252d_mafia.exe	42
PID 2436 wrote to memory of 2244	2436	ulhofeim.exe	44
PID 2436 wrote to memory of 2244	2436	ulhofeim.exe	44
PID 2436 wrote to memory of 2244	2436	ulhofeim.exe	44
PID 2436 wrote to memory of 2244	2436	ulhofeim.exe	44
PID 2436 wrote to memory of 2244	2436	ulhofeim.exe	44
PID 2436 wrote to memory of 2244	2436	ulhofeim.exe	44

C:\Users\Admin\AppData\Local\Temp\2025-01-21_9a14a0443a32965ebd6da88df49e252d_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-21_9a14a0443a32965ebd6da88df49e252d_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1104
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\dshlfuos\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2300
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ulhofeim.exe" C:\Windows\SysWOW64\dshlfuos\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2056
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create dshlfuos binPath= "C:\Windows\SysWOW64\dshlfuos\ulhofeim.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-21_9a14a0443a32965ebd6da88df49e252d_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2488
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description dshlfuos "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2744
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start dshlfuos
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2736
- 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:2756

C:\Windows\SysWOW64\dshlfuos\ulhofeim.exe
C:\Windows\SysWOW64\dshlfuos\ulhofeim.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-21_9a14a0443a32965ebd6da88df49e252d_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2436
- 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:2244

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\ulhofeim.exe

Filesize
10.0MB

MD5
389ff0e4c7bd0a9baa47da365143b689

SHA1
069aa425c9d486aca0b8db2844be12b512fff98b

SHA256
87cc00e5268936aa8eca390831fbbe0993c2aefcd4a89f8a1cdc96560fc7a4e4

SHA512
5b8698ae2b9304cba6cdc4f6412cce713d6eb76e11d18e2f2c2a1cb88c4883a8b225309f0846f06072d0c41aaba487457a9d8fb699348e09d9d280e3b2b8f643

Download Submit
memory/1104-7-0x0000000000400000-0x0000000002DC3000-memory.dmp

Filesize
41.8MB

Download
memory/1104-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/1104-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1104-9-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/1104-8-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1104-1-0x0000000002EA0000-0x0000000002FA0000-memory.dmp

Filesize
1024KB

Download
memory/2244-14-0x0000000000100000-0x0000000000115000-memory.dmp

Filesize
84KB

Download
memory/2244-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2244-11-0x0000000000100000-0x0000000000115000-memory.dmp

Filesize
84KB

Download
memory/2244-17-0x0000000000100000-0x0000000000115000-memory.dmp

Filesize
84KB

Download
memory/2244-18-0x0000000000100000-0x0000000000115000-memory.dmp

Filesize
84KB

Download
memory/2436-15-0x0000000000400000-0x0000000002DC3000-memory.dmp

Filesize
41.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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