tofsee | 0070e257bc8f51111460d5951238555fb00b9a7416a69204a2d74db64fa72ce0

General

Target

2025-02-04_6d60b96b09a8a32c43e61f0d55597a46_mafia.exe
Size

14.7MB
MD5

6d60b96b09a8a32c43e61f0d55597a46
SHA1

77bb5533c32405e356e8651302ea9c8f29d3076d
SHA256

0070e257bc8f51111460d5951238555fb00b9a7416a69204a2d74db64fa72ce0
SHA512

3fdae3f4df849242364fd36c5df6ef196114c532c215b2d4735a81baf560ba7e1c503545f78844b5ad56c132afd6168cbb1c9bcc6118254c0892d762684cc910
SSDEEP

3072:ULBgXOXcdW8tar7vGdq8c7YMl2b8anmMXnb58XuDP9het3Zv1oSW1za2E+w5C2/k:ROMdRQr7OB0ypmMXnl8XEPM3noSWOCZ

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
4984	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\bqmnhanu\ImagePath = "C:\\Windows\\SysWOW64\\bqmnhanu\\bsayidky.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-1-5-21-70482961-775596374-3727440602-1000\Control Panel\International\Geo\Nation	2025-02-04_6d60b96b09a8a32c43e61f0d55597a46_mafia.exe

Deletes itself 1 IoCs

pid	Process
4176	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2392	bsayidky.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2392 set thread context of 4176	2392	bsayidky.exe	105

Launches sc.exe 3 IoCs

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

pid	Process
1936	sc.exe
3288	sc.exe
2788	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
1332	876	WerFault.exe	82
1576	2392	WerFault.exe	99

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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	bsayidky.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-02-04_6d60b96b09a8a32c43e61f0d55597a46_mafia.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	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 876 wrote to memory of 4900	876	2025-02-04_6d60b96b09a8a32c43e61f0d55597a46_mafia.exe	89
PID 876 wrote to memory of 4900	876	2025-02-04_6d60b96b09a8a32c43e61f0d55597a46_mafia.exe	89
PID 876 wrote to memory of 4900	876	2025-02-04_6d60b96b09a8a32c43e61f0d55597a46_mafia.exe	89
PID 876 wrote to memory of 1584	876	2025-02-04_6d60b96b09a8a32c43e61f0d55597a46_mafia.exe	91
PID 876 wrote to memory of 1584	876	2025-02-04_6d60b96b09a8a32c43e61f0d55597a46_mafia.exe	91
PID 876 wrote to memory of 1584	876	2025-02-04_6d60b96b09a8a32c43e61f0d55597a46_mafia.exe	91
PID 876 wrote to memory of 1936	876	2025-02-04_6d60b96b09a8a32c43e61f0d55597a46_mafia.exe	93
PID 876 wrote to memory of 1936	876	2025-02-04_6d60b96b09a8a32c43e61f0d55597a46_mafia.exe	93
PID 876 wrote to memory of 1936	876	2025-02-04_6d60b96b09a8a32c43e61f0d55597a46_mafia.exe	93
PID 876 wrote to memory of 3288	876	2025-02-04_6d60b96b09a8a32c43e61f0d55597a46_mafia.exe	95
PID 876 wrote to memory of 3288	876	2025-02-04_6d60b96b09a8a32c43e61f0d55597a46_mafia.exe	95
PID 876 wrote to memory of 3288	876	2025-02-04_6d60b96b09a8a32c43e61f0d55597a46_mafia.exe	95
PID 876 wrote to memory of 2788	876	2025-02-04_6d60b96b09a8a32c43e61f0d55597a46_mafia.exe	97
PID 876 wrote to memory of 2788	876	2025-02-04_6d60b96b09a8a32c43e61f0d55597a46_mafia.exe	97
PID 876 wrote to memory of 2788	876	2025-02-04_6d60b96b09a8a32c43e61f0d55597a46_mafia.exe	97
PID 876 wrote to memory of 4984	876	2025-02-04_6d60b96b09a8a32c43e61f0d55597a46_mafia.exe	100
PID 876 wrote to memory of 4984	876	2025-02-04_6d60b96b09a8a32c43e61f0d55597a46_mafia.exe	100
PID 876 wrote to memory of 4984	876	2025-02-04_6d60b96b09a8a32c43e61f0d55597a46_mafia.exe	100
PID 2392 wrote to memory of 4176	2392	bsayidky.exe	105
PID 2392 wrote to memory of 4176	2392	bsayidky.exe	105
PID 2392 wrote to memory of 4176	2392	bsayidky.exe	105
PID 2392 wrote to memory of 4176	2392	bsayidky.exe	105
PID 2392 wrote to memory of 4176	2392	bsayidky.exe	105

C:\Users\Admin\AppData\Local\Temp\2025-02-04_6d60b96b09a8a32c43e61f0d55597a46_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-04_6d60b96b09a8a32c43e61f0d55597a46_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:876
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\bqmnhanu\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4900
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\bsayidky.exe" C:\Windows\SysWOW64\bqmnhanu\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1584
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create bqmnhanu binPath= "C:\Windows\SysWOW64\bqmnhanu\bsayidky.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-04_6d60b96b09a8a32c43e61f0d55597a46_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1936
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description bqmnhanu "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3288
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start bqmnhanu
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2788
- 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:4984
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 876 -s 668
  2⤵
  - Program crash
  PID:1332

C:\Windows\SysWOW64\bqmnhanu\bsayidky.exe
C:\Windows\SysWOW64\bqmnhanu\bsayidky.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-04_6d60b96b09a8a32c43e61f0d55597a46_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2392
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4176
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2392 -s 532
  2⤵
  - Program crash
  PID:1576

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 876 -ip 876
1⤵
PID:4148

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 2392 -ip 2392
1⤵
PID:1656

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\bsayidky.exe

Filesize
13.0MB

MD5
7a6280a4cd4022f2cd479c13ac7af8d9

SHA1
3ed6f70cebf926730155e74e0afaf2948cfcac92

SHA256
929f5b06db9f67b17f6990a880725131710ce6614bae5c0ff45f46c43b62e47e

SHA512
f70442b54b31f916b8c10fbfcb6287babae0ed2515b152d7b248886b676cf50bba51791c0f09ea68b077c101302f130c2bdabfe5a6d7a28f8c23a30e45d1ec06

Download Submit
memory/876-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/876-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/876-2-0x0000000000590000-0x00000000005A3000-memory.dmp

Filesize
76KB

Download
memory/876-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/876-8-0x0000000000590000-0x00000000005A3000-memory.dmp

Filesize
76KB

Download
memory/876-1-0x0000000000490000-0x0000000000590000-memory.dmp

Filesize
1024KB

Download
memory/2392-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2392-11-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2392-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2392-19-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4176-14-0x0000000000BE0000-0x0000000000BF5000-memory.dmp

Filesize
84KB

Download
memory/4176-16-0x0000000000BE0000-0x0000000000BF5000-memory.dmp

Filesize
84KB

Download
memory/4176-17-0x0000000000BE0000-0x0000000000BF5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads