tofsee | b55246338bcdc1bebe0eeb46362d3cd71d843dff533e21ded99653e0cdd0ca7c

General

Target

2025-01-27_20a671c03662511935387bb74be8153b_mafia.exe
Size

13.1MB
MD5

20a671c03662511935387bb74be8153b
SHA1

55f63ef86a4b4af0d35ca0d35ee78af85f4866d1
SHA256

b55246338bcdc1bebe0eeb46362d3cd71d843dff533e21ded99653e0cdd0ca7c
SHA512

31c6683296a3aaf4863a893f8d57f3dbd5e1742ced1d11cd72c92969cda60e1e47e5ba117037c1c86c5a589bec74acf74331a700bcbf219751a5b7e125e0cfd3
SSDEEP

49152:XqE0YKr3fYPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP:XqtYc3

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
1896	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\cslfbams\ImagePath = "C:\\Windows\\SysWOW64\\cslfbams\\pgcjazdh.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	2025-01-27_20a671c03662511935387bb74be8153b_mafia.exe

Deletes itself 1 IoCs

pid	Process
1916	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3288	pgcjazdh.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3288 set thread context of 1916	3288	pgcjazdh.exe	97

Launches sc.exe 3 IoCs

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

pid	Process
4976	sc.exe
4300	sc.exe
4476	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
5076	964	WerFault.exe	82
1640	3288	WerFault.exe	93

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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-01-27_20a671c03662511935387bb74be8153b_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	pgcjazdh.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 964 wrote to memory of 4584	964	2025-01-27_20a671c03662511935387bb74be8153b_mafia.exe	83
PID 964 wrote to memory of 4584	964	2025-01-27_20a671c03662511935387bb74be8153b_mafia.exe	83
PID 964 wrote to memory of 4584	964	2025-01-27_20a671c03662511935387bb74be8153b_mafia.exe	83
PID 964 wrote to memory of 2200	964	2025-01-27_20a671c03662511935387bb74be8153b_mafia.exe	85
PID 964 wrote to memory of 2200	964	2025-01-27_20a671c03662511935387bb74be8153b_mafia.exe	85
PID 964 wrote to memory of 2200	964	2025-01-27_20a671c03662511935387bb74be8153b_mafia.exe	85
PID 964 wrote to memory of 4300	964	2025-01-27_20a671c03662511935387bb74be8153b_mafia.exe	87
PID 964 wrote to memory of 4300	964	2025-01-27_20a671c03662511935387bb74be8153b_mafia.exe	87
PID 964 wrote to memory of 4300	964	2025-01-27_20a671c03662511935387bb74be8153b_mafia.exe	87
PID 964 wrote to memory of 4476	964	2025-01-27_20a671c03662511935387bb74be8153b_mafia.exe	89
PID 964 wrote to memory of 4476	964	2025-01-27_20a671c03662511935387bb74be8153b_mafia.exe	89
PID 964 wrote to memory of 4476	964	2025-01-27_20a671c03662511935387bb74be8153b_mafia.exe	89
PID 964 wrote to memory of 4976	964	2025-01-27_20a671c03662511935387bb74be8153b_mafia.exe	91
PID 964 wrote to memory of 4976	964	2025-01-27_20a671c03662511935387bb74be8153b_mafia.exe	91
PID 964 wrote to memory of 4976	964	2025-01-27_20a671c03662511935387bb74be8153b_mafia.exe	91
PID 964 wrote to memory of 1896	964	2025-01-27_20a671c03662511935387bb74be8153b_mafia.exe	94
PID 964 wrote to memory of 1896	964	2025-01-27_20a671c03662511935387bb74be8153b_mafia.exe	94
PID 964 wrote to memory of 1896	964	2025-01-27_20a671c03662511935387bb74be8153b_mafia.exe	94
PID 3288 wrote to memory of 1916	3288	pgcjazdh.exe	97
PID 3288 wrote to memory of 1916	3288	pgcjazdh.exe	97
PID 3288 wrote to memory of 1916	3288	pgcjazdh.exe	97
PID 3288 wrote to memory of 1916	3288	pgcjazdh.exe	97
PID 3288 wrote to memory of 1916	3288	pgcjazdh.exe	97

C:\Users\Admin\AppData\Local\Temp\2025-01-27_20a671c03662511935387bb74be8153b_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-27_20a671c03662511935387bb74be8153b_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:964
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\cslfbams\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4584
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\pgcjazdh.exe" C:\Windows\SysWOW64\cslfbams\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2200
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create cslfbams binPath= "C:\Windows\SysWOW64\cslfbams\pgcjazdh.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-27_20a671c03662511935387bb74be8153b_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4300
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description cslfbams "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4476
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start cslfbams
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4976
- 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:1896
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 964 -s 1044
  2⤵
  - Program crash
  PID:5076

C:\Windows\SysWOW64\cslfbams\pgcjazdh.exe
C:\Windows\SysWOW64\cslfbams\pgcjazdh.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-27_20a671c03662511935387bb74be8153b_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3288
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1916
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3288 -s 512
  2⤵
  - Program crash
  PID:1640

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 464 -p 3288 -ip 3288
1⤵
PID:2524

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 476 -p 964 -ip 964
1⤵
PID:4656

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\pgcjazdh.exe

Filesize
13.3MB

MD5
baf5bf7da4f88e9ac5508de1e05684d9

SHA1
9f32f3daca1f2b2ca40023f5f732d40b6aee63e5

SHA256
263ef5081a9056e65d5a7f59a164d5cf1dde6448792df70050ef80fe641ca277

SHA512
56ea35e07b5b3dd0a85dd0164e8ceab7098e9f1fb5d2ab246e43464f7393b7d184fd4cd8ef75314765b7307555a3c019679c7674a69e47d0a16f1095404225f6

Download Submit
memory/964-1-0x0000000002EF0000-0x0000000002FF0000-memory.dmp

Filesize
1024KB

Download
memory/964-2-0x0000000002E10000-0x0000000002E23000-memory.dmp

Filesize
76KB

Download
memory/964-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/964-13-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/964-12-0x0000000002E10000-0x0000000002E23000-memory.dmp

Filesize
76KB

Download
memory/964-11-0x0000000000400000-0x0000000002DC3000-memory.dmp

Filesize
41.8MB

Download
memory/1916-8-0x0000000000710000-0x0000000000725000-memory.dmp

Filesize
84KB

Download
memory/1916-14-0x0000000000710000-0x0000000000725000-memory.dmp

Filesize
84KB

Download
memory/1916-15-0x0000000000710000-0x0000000000725000-memory.dmp

Filesize
84KB

Download
memory/3288-10-0x0000000000400000-0x0000000002DC3000-memory.dmp

Filesize
41.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads