tofsee | 7cdc6699ebba552973ec083185ad2f4fdb9b7c3917cc459f5e9013ca62a5b813

General

Target

2025-01-30_91db8558eace068815dcf94fe9d7120d_mafia.exe
Size

11.5MB
MD5

91db8558eace068815dcf94fe9d7120d
SHA1

b74cc681cce044dca82a8c87fa5fee2f56a1157c
SHA256

7cdc6699ebba552973ec083185ad2f4fdb9b7c3917cc459f5e9013ca62a5b813
SHA512

2f2579188eebb85eea26334b8c1eb0ecc581846c61faeccf0e2132e4ad93627f423abf92dacfb16047c0a74535a09468582ba8563958a99e28d768365711d858
SSDEEP

3072:mLBgXOXcdW8tar7vGdq8c7YMl2b8anmMXnb58XuDP9het3Zv1oSW1za2E+w5C2/T:POMdRQr7OB0ypmMXnl8XEPM3noSWOCa

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
4424	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\kldczapz\ImagePath = "C:\\Windows\\SysWOW64\\kldczapz\\ultrbwdr.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-1-5-21-3625106387-4207083342-115176794-1000\Control Panel\International\Geo\Nation	2025-01-30_91db8558eace068815dcf94fe9d7120d_mafia.exe

Deletes itself 1 IoCs

pid	Process
1100	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2484	ultrbwdr.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2484 set thread context of 1100	2484	ultrbwdr.exe	101

Launches sc.exe 3 IoCs

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

pid	Process
224	sc.exe
1856	sc.exe
4548	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
912	1296	WerFault.exe	81
3124	2484	WerFault.exe	95

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	netsh.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	ultrbwdr.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-01-30_91db8558eace068815dcf94fe9d7120d_mafia.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1296 wrote to memory of 2864	1296	2025-01-30_91db8558eace068815dcf94fe9d7120d_mafia.exe	85
PID 1296 wrote to memory of 2864	1296	2025-01-30_91db8558eace068815dcf94fe9d7120d_mafia.exe	85
PID 1296 wrote to memory of 2864	1296	2025-01-30_91db8558eace068815dcf94fe9d7120d_mafia.exe	85
PID 1296 wrote to memory of 3428	1296	2025-01-30_91db8558eace068815dcf94fe9d7120d_mafia.exe	87
PID 1296 wrote to memory of 3428	1296	2025-01-30_91db8558eace068815dcf94fe9d7120d_mafia.exe	87
PID 1296 wrote to memory of 3428	1296	2025-01-30_91db8558eace068815dcf94fe9d7120d_mafia.exe	87
PID 1296 wrote to memory of 224	1296	2025-01-30_91db8558eace068815dcf94fe9d7120d_mafia.exe	89
PID 1296 wrote to memory of 224	1296	2025-01-30_91db8558eace068815dcf94fe9d7120d_mafia.exe	89
PID 1296 wrote to memory of 224	1296	2025-01-30_91db8558eace068815dcf94fe9d7120d_mafia.exe	89
PID 1296 wrote to memory of 1856	1296	2025-01-30_91db8558eace068815dcf94fe9d7120d_mafia.exe	91
PID 1296 wrote to memory of 1856	1296	2025-01-30_91db8558eace068815dcf94fe9d7120d_mafia.exe	91
PID 1296 wrote to memory of 1856	1296	2025-01-30_91db8558eace068815dcf94fe9d7120d_mafia.exe	91
PID 1296 wrote to memory of 4548	1296	2025-01-30_91db8558eace068815dcf94fe9d7120d_mafia.exe	93
PID 1296 wrote to memory of 4548	1296	2025-01-30_91db8558eace068815dcf94fe9d7120d_mafia.exe	93
PID 1296 wrote to memory of 4548	1296	2025-01-30_91db8558eace068815dcf94fe9d7120d_mafia.exe	93
PID 1296 wrote to memory of 4424	1296	2025-01-30_91db8558eace068815dcf94fe9d7120d_mafia.exe	96
PID 1296 wrote to memory of 4424	1296	2025-01-30_91db8558eace068815dcf94fe9d7120d_mafia.exe	96
PID 1296 wrote to memory of 4424	1296	2025-01-30_91db8558eace068815dcf94fe9d7120d_mafia.exe	96
PID 2484 wrote to memory of 1100	2484	ultrbwdr.exe	101
PID 2484 wrote to memory of 1100	2484	ultrbwdr.exe	101
PID 2484 wrote to memory of 1100	2484	ultrbwdr.exe	101
PID 2484 wrote to memory of 1100	2484	ultrbwdr.exe	101
PID 2484 wrote to memory of 1100	2484	ultrbwdr.exe	101

C:\Users\Admin\AppData\Local\Temp\2025-01-30_91db8558eace068815dcf94fe9d7120d_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-30_91db8558eace068815dcf94fe9d7120d_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1296
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\kldczapz\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2864
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ultrbwdr.exe" C:\Windows\SysWOW64\kldczapz\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3428
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create kldczapz binPath= "C:\Windows\SysWOW64\kldczapz\ultrbwdr.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-30_91db8558eace068815dcf94fe9d7120d_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:224
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description kldczapz "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1856
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start kldczapz
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4548
- 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:4424
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1296 -s 580
  2⤵
  - Program crash
  PID:912

C:\Windows\SysWOW64\kldczapz\ultrbwdr.exe
C:\Windows\SysWOW64\kldczapz\ultrbwdr.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-30_91db8558eace068815dcf94fe9d7120d_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2484
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1100
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2484 -s 508
  2⤵
  - Program crash
  PID:3124

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1296 -ip 1296
1⤵
PID:5100

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 2484 -ip 2484
1⤵
PID:1740

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\ultrbwdr.exe

Filesize
12.3MB

MD5
7c4debdfa9ba03792852b461faa15246

SHA1
f8e93141c4af1dfe0b818cbe28f9a86fe73882fa

SHA256
8862babb54389258aee155acef4098dcab50640ba633af81524fd198e40d2bcf

SHA512
0b976532add902114194c6726c3f198fa906ac4c80cdd8b55b33080a87541aadefd2e3b6abdd3cf37b72143ace5d8cfe26e7cce94d9823a3558ec7eb26cc4e04

Download Submit
memory/1100-14-0x0000000000FA0000-0x0000000000FB5000-memory.dmp

Filesize
84KB

Download
memory/1100-17-0x0000000000FA0000-0x0000000000FB5000-memory.dmp

Filesize
84KB

Download
memory/1100-16-0x0000000000FA0000-0x0000000000FB5000-memory.dmp

Filesize
84KB

Download
memory/1296-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1296-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/1296-1-0x00000000006C0000-0x00000000007C0000-memory.dmp

Filesize
1024KB

Download
memory/1296-8-0x0000000000520000-0x0000000000533000-memory.dmp

Filesize
76KB

Download
memory/1296-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1296-2-0x0000000000520000-0x0000000000533000-memory.dmp

Filesize
76KB

Download
memory/2484-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2484-11-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2484-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2484-19-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads