tofsee | 8090e1afcab6554937edd0bc8c587ed5449e5954f3287e089b948eef719e3f49

General

Target

2025-01-31_d2aa8a89bed9a2fce489567b59d15112_mafia.exe
Size

11.9MB
MD5

d2aa8a89bed9a2fce489567b59d15112
SHA1

51040b5011828b7a3f995af3e7bff3aa954be3fa
SHA256

8090e1afcab6554937edd0bc8c587ed5449e5954f3287e089b948eef719e3f49
SHA512

f9a4e9f60c3afbca32e4dc4ea7f34b02aea23d74e8eb2bb9e47947eb45c1f91e5c3caf3b83eaadc82d7126637c5b580149490e65cc67839a6d2d79ff677e5c08
SSDEEP

49152:OqE0YKr3fYPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPS:OqtYc3z

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
3540	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\rbcwzgkj\ImagePath = "C:\\Windows\\SysWOW64\\rbcwzgkj\\zuyqgrtr.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-1-5-21-1121399784-3202166597-3503557106-1000\Control Panel\International\Geo\Nation	2025-01-31_d2aa8a89bed9a2fce489567b59d15112_mafia.exe

Deletes itself 1 IoCs

pid	Process
3448	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3536	zuyqgrtr.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3536 set thread context of 3448	3536	zuyqgrtr.exe	97

Launches sc.exe 3 IoCs

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

pid	Process
5084	sc.exe
4844	sc.exe
4908	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
1244	3536	WerFault.exe	96
1892	1896	WerFault.exe	82

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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-01-31_d2aa8a89bed9a2fce489567b59d15112_mafia.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	zuyqgrtr.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1896 wrote to memory of 3756	1896	2025-01-31_d2aa8a89bed9a2fce489567b59d15112_mafia.exe	86
PID 1896 wrote to memory of 3756	1896	2025-01-31_d2aa8a89bed9a2fce489567b59d15112_mafia.exe	86
PID 1896 wrote to memory of 3756	1896	2025-01-31_d2aa8a89bed9a2fce489567b59d15112_mafia.exe	86
PID 1896 wrote to memory of 536	1896	2025-01-31_d2aa8a89bed9a2fce489567b59d15112_mafia.exe	88
PID 1896 wrote to memory of 536	1896	2025-01-31_d2aa8a89bed9a2fce489567b59d15112_mafia.exe	88
PID 1896 wrote to memory of 536	1896	2025-01-31_d2aa8a89bed9a2fce489567b59d15112_mafia.exe	88
PID 1896 wrote to memory of 5084	1896	2025-01-31_d2aa8a89bed9a2fce489567b59d15112_mafia.exe	90
PID 1896 wrote to memory of 5084	1896	2025-01-31_d2aa8a89bed9a2fce489567b59d15112_mafia.exe	90
PID 1896 wrote to memory of 5084	1896	2025-01-31_d2aa8a89bed9a2fce489567b59d15112_mafia.exe	90
PID 1896 wrote to memory of 4844	1896	2025-01-31_d2aa8a89bed9a2fce489567b59d15112_mafia.exe	92
PID 1896 wrote to memory of 4844	1896	2025-01-31_d2aa8a89bed9a2fce489567b59d15112_mafia.exe	92
PID 1896 wrote to memory of 4844	1896	2025-01-31_d2aa8a89bed9a2fce489567b59d15112_mafia.exe	92
PID 1896 wrote to memory of 4908	1896	2025-01-31_d2aa8a89bed9a2fce489567b59d15112_mafia.exe	94
PID 1896 wrote to memory of 4908	1896	2025-01-31_d2aa8a89bed9a2fce489567b59d15112_mafia.exe	94
PID 1896 wrote to memory of 4908	1896	2025-01-31_d2aa8a89bed9a2fce489567b59d15112_mafia.exe	94
PID 3536 wrote to memory of 3448	3536	zuyqgrtr.exe	97
PID 3536 wrote to memory of 3448	3536	zuyqgrtr.exe	97
PID 3536 wrote to memory of 3448	3536	zuyqgrtr.exe	97
PID 3536 wrote to memory of 3448	3536	zuyqgrtr.exe	97
PID 3536 wrote to memory of 3448	3536	zuyqgrtr.exe	97
PID 1896 wrote to memory of 3540	1896	2025-01-31_d2aa8a89bed9a2fce489567b59d15112_mafia.exe	99
PID 1896 wrote to memory of 3540	1896	2025-01-31_d2aa8a89bed9a2fce489567b59d15112_mafia.exe	99
PID 1896 wrote to memory of 3540	1896	2025-01-31_d2aa8a89bed9a2fce489567b59d15112_mafia.exe	99

C:\Users\Admin\AppData\Local\Temp\2025-01-31_d2aa8a89bed9a2fce489567b59d15112_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-31_d2aa8a89bed9a2fce489567b59d15112_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1896
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\rbcwzgkj\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3756
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\zuyqgrtr.exe" C:\Windows\SysWOW64\rbcwzgkj\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:536
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create rbcwzgkj binPath= "C:\Windows\SysWOW64\rbcwzgkj\zuyqgrtr.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-31_d2aa8a89bed9a2fce489567b59d15112_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:5084
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description rbcwzgkj "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4844
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start rbcwzgkj
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4908
- 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:3540
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1896 -s 1300
  2⤵
  - Program crash
  PID:1892

C:\Windows\SysWOW64\rbcwzgkj\zuyqgrtr.exe
C:\Windows\SysWOW64\rbcwzgkj\zuyqgrtr.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-31_d2aa8a89bed9a2fce489567b59d15112_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3536
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3448
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3536 -s 512
  2⤵
  - Program crash
  PID:1244

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 464 -p 3536 -ip 3536
1⤵
PID:3960

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 508 -p 1896 -ip 1896
1⤵
PID:2244

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\zuyqgrtr.exe

Filesize
11.6MB

MD5
da6e1db2ff3ab5370677ee0c3a3adf97

SHA1
c888758d6323d247b75fec2b76d84c1eaee837f4

SHA256
1e8c33c153302e0f4e735d10ac9d34c9618c997c96dfffb72055a44ae8afd7ee

SHA512
726cf837b2e55792747b42e7ca127d06979574f250cf769bf0eaa693bb00ca028875252c80cffacce930f8159f747ac0551e47a9cdc433a6b6355588cde8a65f

Download Submit
memory/1896-1-0x0000000002F60000-0x0000000003060000-memory.dmp

Filesize
1024KB

Download
memory/1896-2-0x0000000002F00000-0x0000000002F13000-memory.dmp

Filesize
76KB

Download
memory/1896-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1896-13-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1896-12-0x0000000002F00000-0x0000000002F13000-memory.dmp

Filesize
76KB

Download
memory/1896-11-0x0000000000400000-0x0000000002DC3000-memory.dmp

Filesize
41.8MB

Download
memory/3448-8-0x0000000000AB0000-0x0000000000AC5000-memory.dmp

Filesize
84KB

Download
memory/3448-14-0x0000000000AB0000-0x0000000000AC5000-memory.dmp

Filesize
84KB

Download
memory/3448-15-0x0000000000AB0000-0x0000000000AC5000-memory.dmp

Filesize
84KB

Download
memory/3536-10-0x0000000000400000-0x0000000002DC3000-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