tofsee | 21b70b9d34cc4456dea3c340c60e63e6af910ca6ceaab62694cea3ad558717bf

General

Target

2025-02-01_cb0c931541e9fc73ac2847fa4222fe2b_mafia.exe
Size

11.6MB
MD5

cb0c931541e9fc73ac2847fa4222fe2b
SHA1

186a9da1a462953f4cd10938c418d6c916b80ffa
SHA256

21b70b9d34cc4456dea3c340c60e63e6af910ca6ceaab62694cea3ad558717bf
SHA512

5a73ea10f5e0f62a8e463643fdc0a96883573b9719590df9b605e3c101fb3b0dba3c803002cff4bb967a54792ad7214a38b36ad80c794c1115c33122896c7917
SSDEEP

3072:tLBgXOXcdW8tar7vGdq8c7YMl2b8anmMXnb58XuDP9het3Zv1oSW1za2E+w5C2/Y:wOMdRQr7OB0ypmMXnl8XEPM3noSWOC

Score

10^/10

tofsee defense_evasion discovery 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

defense_evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
4512	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\ungukebi\ImagePath = "C:\\Windows\\SysWOW64\\ungukebi\\ehnhwhsy.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-1-5-21-2211717155-842865201-3404093980-1000\Control Panel\International\Geo\Nation	2025-02-01_cb0c931541e9fc73ac2847fa4222fe2b_mafia.exe

Deletes itself 1 IoCs

pid	Process
2872	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4552	ehnhwhsy.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4552 set thread context of 2872	4552	ehnhwhsy.exe	102

Launches sc.exe 3 IoCs

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

pid	Process
2792	sc.exe
1624	sc.exe
1400	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 queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
2004	2956	WerFault.exe	82
1076	4552	WerFault.exe	96

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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ehnhwhsy.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-02-01_cb0c931541e9fc73ac2847fa4222fe2b_mafia.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2956 wrote to memory of 1952	2956	2025-02-01_cb0c931541e9fc73ac2847fa4222fe2b_mafia.exe	86
PID 2956 wrote to memory of 1952	2956	2025-02-01_cb0c931541e9fc73ac2847fa4222fe2b_mafia.exe	86
PID 2956 wrote to memory of 1952	2956	2025-02-01_cb0c931541e9fc73ac2847fa4222fe2b_mafia.exe	86
PID 2956 wrote to memory of 2028	2956	2025-02-01_cb0c931541e9fc73ac2847fa4222fe2b_mafia.exe	88
PID 2956 wrote to memory of 2028	2956	2025-02-01_cb0c931541e9fc73ac2847fa4222fe2b_mafia.exe	88
PID 2956 wrote to memory of 2028	2956	2025-02-01_cb0c931541e9fc73ac2847fa4222fe2b_mafia.exe	88
PID 2956 wrote to memory of 2792	2956	2025-02-01_cb0c931541e9fc73ac2847fa4222fe2b_mafia.exe	90
PID 2956 wrote to memory of 2792	2956	2025-02-01_cb0c931541e9fc73ac2847fa4222fe2b_mafia.exe	90
PID 2956 wrote to memory of 2792	2956	2025-02-01_cb0c931541e9fc73ac2847fa4222fe2b_mafia.exe	90
PID 2956 wrote to memory of 1624	2956	2025-02-01_cb0c931541e9fc73ac2847fa4222fe2b_mafia.exe	92
PID 2956 wrote to memory of 1624	2956	2025-02-01_cb0c931541e9fc73ac2847fa4222fe2b_mafia.exe	92
PID 2956 wrote to memory of 1624	2956	2025-02-01_cb0c931541e9fc73ac2847fa4222fe2b_mafia.exe	92
PID 2956 wrote to memory of 1400	2956	2025-02-01_cb0c931541e9fc73ac2847fa4222fe2b_mafia.exe	94
PID 2956 wrote to memory of 1400	2956	2025-02-01_cb0c931541e9fc73ac2847fa4222fe2b_mafia.exe	94
PID 2956 wrote to memory of 1400	2956	2025-02-01_cb0c931541e9fc73ac2847fa4222fe2b_mafia.exe	94
PID 2956 wrote to memory of 4512	2956	2025-02-01_cb0c931541e9fc73ac2847fa4222fe2b_mafia.exe	97
PID 2956 wrote to memory of 4512	2956	2025-02-01_cb0c931541e9fc73ac2847fa4222fe2b_mafia.exe	97
PID 2956 wrote to memory of 4512	2956	2025-02-01_cb0c931541e9fc73ac2847fa4222fe2b_mafia.exe	97
PID 4552 wrote to memory of 2872	4552	ehnhwhsy.exe	102
PID 4552 wrote to memory of 2872	4552	ehnhwhsy.exe	102
PID 4552 wrote to memory of 2872	4552	ehnhwhsy.exe	102
PID 4552 wrote to memory of 2872	4552	ehnhwhsy.exe	102
PID 4552 wrote to memory of 2872	4552	ehnhwhsy.exe	102

C:\Users\Admin\AppData\Local\Temp\2025-02-01_cb0c931541e9fc73ac2847fa4222fe2b_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-01_cb0c931541e9fc73ac2847fa4222fe2b_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2956
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ungukebi\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1952
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ehnhwhsy.exe" C:\Windows\SysWOW64\ungukebi\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2028
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create ungukebi binPath= "C:\Windows\SysWOW64\ungukebi\ehnhwhsy.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-01_cb0c931541e9fc73ac2847fa4222fe2b_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2792
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description ungukebi "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1624
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start ungukebi
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1400
- 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:4512
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2956 -s 592
  2⤵
  - Program crash
  PID:2004

C:\Windows\SysWOW64\ungukebi\ehnhwhsy.exe
C:\Windows\SysWOW64\ungukebi\ehnhwhsy.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-01_cb0c931541e9fc73ac2847fa4222fe2b_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4552
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2872
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4552 -s 512
  2⤵
  - Program crash
  PID:1076

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2956 -ip 2956
1⤵
PID:4900

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 496 -p 4552 -ip 4552
1⤵
PID:2836

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

Replay Monitor

Loading Replay Monitor...

Downloads

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

Filesize
10.9MB

MD5
93db9896976cf6f1bbe93edf32509eb7

SHA1
8743fa788bd71e4bdd9e404d9c57294fef347a4b

SHA256
20d323fe34012dfb3fb227cfd081f61e9a9721640e151a019a903c71ce1b0f03

SHA512
a6ab6846e7847c1b36608d50a1e0358b53f52978a3cfcdaa1fc2baa1336380f81ca7e896de19b3b43a426c0dbb9ce77050ac173bf8eebfe6b3fe556ac768cbaf

Download Submit
memory/2872-14-0x0000000000710000-0x0000000000725000-memory.dmp

Filesize
84KB

Download
memory/2872-17-0x0000000000710000-0x0000000000725000-memory.dmp

Filesize
84KB

Download
memory/2872-16-0x0000000000710000-0x0000000000725000-memory.dmp

Filesize
84KB

Download
memory/2956-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2956-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2956-1-0x0000000000580000-0x0000000000680000-memory.dmp

Filesize
1024KB

Download
memory/2956-8-0x0000000000880000-0x0000000000893000-memory.dmp

Filesize
76KB

Download
memory/2956-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2956-2-0x0000000000880000-0x0000000000893000-memory.dmp

Filesize
76KB

Download
memory/4552-11-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4552-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4552-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4552-19-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads