tofsee | 9bf94e55f10d23d60a724a00c10f8782c10827846bc1e7315717c75b06439fc4

General

Target

2024-12-26_db987c25ac0b684de3ed6bbec118360d_mafia.exe
Size

12.4MB
MD5

db987c25ac0b684de3ed6bbec118360d
SHA1

341aa3b8893a3661ac0d6ca3f5feca34d01306ba
SHA256

9bf94e55f10d23d60a724a00c10f8782c10827846bc1e7315717c75b06439fc4
SHA512

8d2627d560e5dc07d5e0d2756958b1405528a068d4c82bcaf8e45dc0bdf2b812c18e019de8239096955f44138542bf89085aea507427b2002f0cca281fe34730
SSDEEP

3072:uLBgXOXcdW8tar7vGdq8c7YMl2b8anmMXnb58XuDP9het3Zv1oSW1za2E+w5C2/Y:3OMdRQr7OB0ypmMXnl8XEPM3noSWOC

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

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
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
692	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\zxlxqjdm\ImagePath = "C:\\Windows\\SysWOW64\\zxlxqjdm\\sfrohuzj.exe"	svchost.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation	2024-12-26_db987c25ac0b684de3ed6bbec118360d_mafia.exe

Deletes itself 1 IoCs

pid	Process
396	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3400	sfrohuzj.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3400 set thread context of 396	3400	sfrohuzj.exe	102

Launches sc.exe 3 IoCs

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

pid	Process
2712	sc.exe
2192	sc.exe
3620	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

Program crash 2 IoCs

pid	pid_target	Process	procid_target
1316	2832	WerFault.exe	81
2876	3400	WerFault.exe	92

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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-12-26_db987c25ac0b684de3ed6bbec118360d_mafia.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.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	sfrohuzj.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2832 wrote to memory of 1608	2832	2024-12-26_db987c25ac0b684de3ed6bbec118360d_mafia.exe	82
PID 2832 wrote to memory of 1608	2832	2024-12-26_db987c25ac0b684de3ed6bbec118360d_mafia.exe	82
PID 2832 wrote to memory of 1608	2832	2024-12-26_db987c25ac0b684de3ed6bbec118360d_mafia.exe	82
PID 2832 wrote to memory of 2408	2832	2024-12-26_db987c25ac0b684de3ed6bbec118360d_mafia.exe	84
PID 2832 wrote to memory of 2408	2832	2024-12-26_db987c25ac0b684de3ed6bbec118360d_mafia.exe	84
PID 2832 wrote to memory of 2408	2832	2024-12-26_db987c25ac0b684de3ed6bbec118360d_mafia.exe	84
PID 2832 wrote to memory of 2192	2832	2024-12-26_db987c25ac0b684de3ed6bbec118360d_mafia.exe	86
PID 2832 wrote to memory of 2192	2832	2024-12-26_db987c25ac0b684de3ed6bbec118360d_mafia.exe	86
PID 2832 wrote to memory of 2192	2832	2024-12-26_db987c25ac0b684de3ed6bbec118360d_mafia.exe	86
PID 2832 wrote to memory of 3620	2832	2024-12-26_db987c25ac0b684de3ed6bbec118360d_mafia.exe	88
PID 2832 wrote to memory of 3620	2832	2024-12-26_db987c25ac0b684de3ed6bbec118360d_mafia.exe	88
PID 2832 wrote to memory of 3620	2832	2024-12-26_db987c25ac0b684de3ed6bbec118360d_mafia.exe	88
PID 2832 wrote to memory of 2712	2832	2024-12-26_db987c25ac0b684de3ed6bbec118360d_mafia.exe	90
PID 2832 wrote to memory of 2712	2832	2024-12-26_db987c25ac0b684de3ed6bbec118360d_mafia.exe	90
PID 2832 wrote to memory of 2712	2832	2024-12-26_db987c25ac0b684de3ed6bbec118360d_mafia.exe	90
PID 2832 wrote to memory of 692	2832	2024-12-26_db987c25ac0b684de3ed6bbec118360d_mafia.exe	93
PID 2832 wrote to memory of 692	2832	2024-12-26_db987c25ac0b684de3ed6bbec118360d_mafia.exe	93
PID 2832 wrote to memory of 692	2832	2024-12-26_db987c25ac0b684de3ed6bbec118360d_mafia.exe	93
PID 3400 wrote to memory of 396	3400	sfrohuzj.exe	102
PID 3400 wrote to memory of 396	3400	sfrohuzj.exe	102
PID 3400 wrote to memory of 396	3400	sfrohuzj.exe	102
PID 3400 wrote to memory of 396	3400	sfrohuzj.exe	102
PID 3400 wrote to memory of 396	3400	sfrohuzj.exe	102

C:\Users\Admin\AppData\Local\Temp\2024-12-26_db987c25ac0b684de3ed6bbec118360d_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2024-12-26_db987c25ac0b684de3ed6bbec118360d_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2832
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\zxlxqjdm\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1608
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\sfrohuzj.exe" C:\Windows\SysWOW64\zxlxqjdm\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2408
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create zxlxqjdm binPath= "C:\Windows\SysWOW64\zxlxqjdm\sfrohuzj.exe /d\"C:\Users\Admin\AppData\Local\Temp\2024-12-26_db987c25ac0b684de3ed6bbec118360d_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2192
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description zxlxqjdm "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3620
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start zxlxqjdm
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2712
- 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:692
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2832 -s 1036
  2⤵
  - Program crash
  PID:1316

C:\Windows\SysWOW64\zxlxqjdm\sfrohuzj.exe
C:\Windows\SysWOW64\zxlxqjdm\sfrohuzj.exe /d"C:\Users\Admin\AppData\Local\Temp\2024-12-26_db987c25ac0b684de3ed6bbec118360d_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3400
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:396
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3400 -s 512
  2⤵
  - Program crash
  PID:2876

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 2832 -ip 2832
1⤵
PID:2012

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 3400 -ip 3400
1⤵
PID:3880

Network

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

Modify Registry

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

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Downloads

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

Filesize
10.3MB

MD5
148ef364535c66401e2ca3b85d54fdfa

SHA1
2df5d560386daecaad379d491827046a0160c36f

SHA256
850937779e3bdf785cb743dfc713cee001d1e3a3695429eeb84d353b5581836b

SHA512
0fe394023df1a85293c51503f7f537d69523584376f3f278cc6f588189fc2abf2c0b470161438831af175ea0433096115d54181d9158197c18864a55f59a1b47

Download Submit
memory/396-14-0x0000000001240000-0x0000000001255000-memory.dmp

Filesize
84KB

Download
memory/396-17-0x0000000001240000-0x0000000001255000-memory.dmp

Filesize
84KB

Download
memory/396-16-0x0000000001240000-0x0000000001255000-memory.dmp

Filesize
84KB

Download
memory/2832-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2832-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2832-1-0x0000000000640000-0x0000000000740000-memory.dmp

Filesize
1024KB

Download
memory/2832-8-0x00000000005C0000-0x00000000005D3000-memory.dmp

Filesize
76KB

Download
memory/2832-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2832-2-0x00000000005C0000-0x00000000005D3000-memory.dmp

Filesize
76KB

Download
memory/3400-11-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3400-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3400-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3400-18-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads