tofsee | c46a5bf2d8001c12538128dec7dbc3563ee98be85f7403624bf48b9e4725d82e

General

Target

2024-12-19_08354967a1a2f5d0c78d5c7d0a80a9bf_mafia.exe
Size

11.3MB
MD5

08354967a1a2f5d0c78d5c7d0a80a9bf
SHA1

65c97fda58d573ad7aaa0677c7d4323a35bd67ed
SHA256

c46a5bf2d8001c12538128dec7dbc3563ee98be85f7403624bf48b9e4725d82e
SHA512

66f404ddcba83f7c5514a8c5f00254177a079361bb72fa0c16fa8094c021b231adf9cc9c978db7f00c261b88c86cb5cac24aac6f20b818847943ac80d995d271
SSDEEP

3072:LLBgXOXcdW8tar7vGdq8c7YMl2b8anmMXnb58XuDP9het3Zv1oSW1za2E+w5C2/Y:yOMdRQr7OB0ypmMXnl8XEPM3noSWOC

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
2724	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\iyyhovhe\ImagePath = "C:\\Windows\\SysWOW64\\iyyhovhe\\onbdroph.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-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	2024-12-19_08354967a1a2f5d0c78d5c7d0a80a9bf_mafia.exe

Deletes itself 1 IoCs

pid	Process
3620	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3248	onbdroph.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3248 set thread context of 3620	3248	onbdroph.exe	101

Launches sc.exe 3 IoCs

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

pid	Process
2316	sc.exe
2872	sc.exe
2040	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
2124	1820	WerFault.exe	82
232	3248	WerFault.exe	94

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	onbdroph.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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-12-19_08354967a1a2f5d0c78d5c7d0a80a9bf_mafia.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1820 wrote to memory of 3740	1820	2024-12-19_08354967a1a2f5d0c78d5c7d0a80a9bf_mafia.exe	84
PID 1820 wrote to memory of 3740	1820	2024-12-19_08354967a1a2f5d0c78d5c7d0a80a9bf_mafia.exe	84
PID 1820 wrote to memory of 3740	1820	2024-12-19_08354967a1a2f5d0c78d5c7d0a80a9bf_mafia.exe	84
PID 1820 wrote to memory of 5012	1820	2024-12-19_08354967a1a2f5d0c78d5c7d0a80a9bf_mafia.exe	86
PID 1820 wrote to memory of 5012	1820	2024-12-19_08354967a1a2f5d0c78d5c7d0a80a9bf_mafia.exe	86
PID 1820 wrote to memory of 5012	1820	2024-12-19_08354967a1a2f5d0c78d5c7d0a80a9bf_mafia.exe	86
PID 1820 wrote to memory of 2040	1820	2024-12-19_08354967a1a2f5d0c78d5c7d0a80a9bf_mafia.exe	88
PID 1820 wrote to memory of 2040	1820	2024-12-19_08354967a1a2f5d0c78d5c7d0a80a9bf_mafia.exe	88
PID 1820 wrote to memory of 2040	1820	2024-12-19_08354967a1a2f5d0c78d5c7d0a80a9bf_mafia.exe	88
PID 1820 wrote to memory of 2316	1820	2024-12-19_08354967a1a2f5d0c78d5c7d0a80a9bf_mafia.exe	90
PID 1820 wrote to memory of 2316	1820	2024-12-19_08354967a1a2f5d0c78d5c7d0a80a9bf_mafia.exe	90
PID 1820 wrote to memory of 2316	1820	2024-12-19_08354967a1a2f5d0c78d5c7d0a80a9bf_mafia.exe	90
PID 1820 wrote to memory of 2872	1820	2024-12-19_08354967a1a2f5d0c78d5c7d0a80a9bf_mafia.exe	92
PID 1820 wrote to memory of 2872	1820	2024-12-19_08354967a1a2f5d0c78d5c7d0a80a9bf_mafia.exe	92
PID 1820 wrote to memory of 2872	1820	2024-12-19_08354967a1a2f5d0c78d5c7d0a80a9bf_mafia.exe	92
PID 1820 wrote to memory of 2724	1820	2024-12-19_08354967a1a2f5d0c78d5c7d0a80a9bf_mafia.exe	95
PID 1820 wrote to memory of 2724	1820	2024-12-19_08354967a1a2f5d0c78d5c7d0a80a9bf_mafia.exe	95
PID 1820 wrote to memory of 2724	1820	2024-12-19_08354967a1a2f5d0c78d5c7d0a80a9bf_mafia.exe	95
PID 3248 wrote to memory of 3620	3248	onbdroph.exe	101
PID 3248 wrote to memory of 3620	3248	onbdroph.exe	101
PID 3248 wrote to memory of 3620	3248	onbdroph.exe	101
PID 3248 wrote to memory of 3620	3248	onbdroph.exe	101
PID 3248 wrote to memory of 3620	3248	onbdroph.exe	101

C:\Users\Admin\AppData\Local\Temp\2024-12-19_08354967a1a2f5d0c78d5c7d0a80a9bf_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2024-12-19_08354967a1a2f5d0c78d5c7d0a80a9bf_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1820
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\iyyhovhe\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3740
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\onbdroph.exe" C:\Windows\SysWOW64\iyyhovhe\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:5012
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create iyyhovhe binPath= "C:\Windows\SysWOW64\iyyhovhe\onbdroph.exe /d\"C:\Users\Admin\AppData\Local\Temp\2024-12-19_08354967a1a2f5d0c78d5c7d0a80a9bf_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2040
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description iyyhovhe "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2316
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start iyyhovhe
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2872
- 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:2724
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1820 -s 1036
  2⤵
  - Program crash
  PID:2124

C:\Windows\SysWOW64\iyyhovhe\onbdroph.exe
C:\Windows\SysWOW64\iyyhovhe\onbdroph.exe /d"C:\Users\Admin\AppData\Local\Temp\2024-12-19_08354967a1a2f5d0c78d5c7d0a80a9bf_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3248
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3620
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3248 -s 512
  2⤵
  - Program crash
  PID:232

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 1820 -ip 1820
1⤵
PID:3760

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 184 -p 3248 -ip 3248
1⤵
PID:1368

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\onbdroph.exe

Filesize
10.5MB

MD5
e19bb7bb2295659b8c77cb88dee93b47

SHA1
db02ee21f88610314dfffad9e98e9f999da8b3b4

SHA256
cd2429310743fdc9343b3a541fb6687f7c947a20d51f3d44155de24918ba784a

SHA512
8b7dbd766685b09dd2f0d0d748ab7ad250c7312688aaab4a4fb1b020dc46a11584ce24766e8b54fba311743e6b86691b3ca376841978ec2100896f16fd9a5b94

Download Submit
memory/1820-8-0x0000000000520000-0x0000000000533000-memory.dmp

Filesize
76KB

Download
memory/1820-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1820-2-0x0000000000520000-0x0000000000533000-memory.dmp

Filesize
76KB

Download
memory/1820-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/1820-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1820-1-0x0000000000740000-0x0000000000840000-memory.dmp

Filesize
1024KB

Download
memory/3248-11-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3248-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3248-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3248-19-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3620-16-0x00000000009C0000-0x00000000009D5000-memory.dmp

Filesize
84KB

Download
memory/3620-14-0x00000000009C0000-0x00000000009D5000-memory.dmp

Filesize
84KB

Download
memory/3620-17-0x00000000009C0000-0x00000000009D5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads