tofsee | ab29fd907470b60139c37b93d086f0b520e4edcf0e485ab90358baee202ba190

Analysis

max time kernel
144s
max time network
130s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
21-09-2024 19:42

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General

Target

2024-09-21_cb445682e33a6b13091fb9d6a70c2120_mafia.exe
Size

15.0MB
MD5

cb445682e33a6b13091fb9d6a70c2120
SHA1

8ebeabd69b3c978b08d95fa81ecfdb17c8d3ce15
SHA256

ab29fd907470b60139c37b93d086f0b520e4edcf0e485ab90358baee202ba190
SHA512

420f357ea5e44deb176d70a69e5e4e2c96c5718742317572911aaa96d872e21f80dfd054c20e2c87ac11c6af99376f692c07678e6840604b9c28df04816a3556
SSDEEP

6144:j+rWO2zeSPDjMXMH7Ll4aFpWVqIwUAP97GEwHrG2+e1x2:j+r1IeSXMXc7LlxWV4Ug97GZ+ej

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

43.231.4.7

lazystax.ru

Signatures

Tofsee
Backdoor/botnet which carries out malicious activities based on commands from a C2 server.
trojan tofsee

Windows security bypass 2 TTPs 1 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Processes:

svchost.exe

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\SysWOW64\vynrbjdr = "0"	svchost.exe

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

Processes:

netsh.exe

pid	Process
2644	netsh.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

svchost.exe

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\vynrbjdr\ImagePath = "C:\\Windows\\SysWOW64\\vynrbjdr\\kjvrwgqd.exe"	svchost.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid	Process
604	svchost.exe

Executes dropped EXE 1 IoCs

Processes:

kjvrwgqd.exe

pid	Process
2960	kjvrwgqd.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

kjvrwgqd.exe

description	pid	Process	procid_target
PID 2960 set thread context of 604	2960	kjvrwgqd.exe	42

Launches sc.exe 3 IoCs

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

Processes:

sc.exesc.exesc.exe

pid	Process
2260	sc.exe
2824	sc.exe
2768	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

Processes:

netsh.exe

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

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

Processes:

cmd.exesc.exenetsh.exe2024-09-21_cb445682e33a6b13091fb9d6a70c2120_mafia.execmd.exesc.exesc.exekjvrwgqd.exesvchost.exe

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	2024-09-21_cb445682e33a6b13091fb9d6a70c2120_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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	kjvrwgqd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

2024-09-21_cb445682e33a6b13091fb9d6a70c2120_mafia.exekjvrwgqd.exe

description	pid	Process	procid_target
PID 2212 wrote to memory of 2072	2212	2024-09-21_cb445682e33a6b13091fb9d6a70c2120_mafia.exe	31
PID 2212 wrote to memory of 2072	2212	2024-09-21_cb445682e33a6b13091fb9d6a70c2120_mafia.exe	31
PID 2212 wrote to memory of 2072	2212	2024-09-21_cb445682e33a6b13091fb9d6a70c2120_mafia.exe	31
PID 2212 wrote to memory of 2072	2212	2024-09-21_cb445682e33a6b13091fb9d6a70c2120_mafia.exe	31
PID 2212 wrote to memory of 2548	2212	2024-09-21_cb445682e33a6b13091fb9d6a70c2120_mafia.exe	33
PID 2212 wrote to memory of 2548	2212	2024-09-21_cb445682e33a6b13091fb9d6a70c2120_mafia.exe	33
PID 2212 wrote to memory of 2548	2212	2024-09-21_cb445682e33a6b13091fb9d6a70c2120_mafia.exe	33
PID 2212 wrote to memory of 2548	2212	2024-09-21_cb445682e33a6b13091fb9d6a70c2120_mafia.exe	33
PID 2212 wrote to memory of 2260	2212	2024-09-21_cb445682e33a6b13091fb9d6a70c2120_mafia.exe	35
PID 2212 wrote to memory of 2260	2212	2024-09-21_cb445682e33a6b13091fb9d6a70c2120_mafia.exe	35
PID 2212 wrote to memory of 2260	2212	2024-09-21_cb445682e33a6b13091fb9d6a70c2120_mafia.exe	35
PID 2212 wrote to memory of 2260	2212	2024-09-21_cb445682e33a6b13091fb9d6a70c2120_mafia.exe	35
PID 2212 wrote to memory of 2824	2212	2024-09-21_cb445682e33a6b13091fb9d6a70c2120_mafia.exe	37
PID 2212 wrote to memory of 2824	2212	2024-09-21_cb445682e33a6b13091fb9d6a70c2120_mafia.exe	37
PID 2212 wrote to memory of 2824	2212	2024-09-21_cb445682e33a6b13091fb9d6a70c2120_mafia.exe	37
PID 2212 wrote to memory of 2824	2212	2024-09-21_cb445682e33a6b13091fb9d6a70c2120_mafia.exe	37
PID 2212 wrote to memory of 2768	2212	2024-09-21_cb445682e33a6b13091fb9d6a70c2120_mafia.exe	39
PID 2212 wrote to memory of 2768	2212	2024-09-21_cb445682e33a6b13091fb9d6a70c2120_mafia.exe	39
PID 2212 wrote to memory of 2768	2212	2024-09-21_cb445682e33a6b13091fb9d6a70c2120_mafia.exe	39
PID 2212 wrote to memory of 2768	2212	2024-09-21_cb445682e33a6b13091fb9d6a70c2120_mafia.exe	39
PID 2960 wrote to memory of 604	2960	kjvrwgqd.exe	42
PID 2960 wrote to memory of 604	2960	kjvrwgqd.exe	42
PID 2960 wrote to memory of 604	2960	kjvrwgqd.exe	42
PID 2960 wrote to memory of 604	2960	kjvrwgqd.exe	42
PID 2960 wrote to memory of 604	2960	kjvrwgqd.exe	42
PID 2960 wrote to memory of 604	2960	kjvrwgqd.exe	42
PID 2212 wrote to memory of 2644	2212	2024-09-21_cb445682e33a6b13091fb9d6a70c2120_mafia.exe	43
PID 2212 wrote to memory of 2644	2212	2024-09-21_cb445682e33a6b13091fb9d6a70c2120_mafia.exe	43
PID 2212 wrote to memory of 2644	2212	2024-09-21_cb445682e33a6b13091fb9d6a70c2120_mafia.exe	43
PID 2212 wrote to memory of 2644	2212	2024-09-21_cb445682e33a6b13091fb9d6a70c2120_mafia.exe	43

C:\Users\Admin\AppData\Local\Temp\2024-09-21_cb445682e33a6b13091fb9d6a70c2120_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-21_cb445682e33a6b13091fb9d6a70c2120_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2212
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\vynrbjdr\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2072
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\kjvrwgqd.exe" C:\Windows\SysWOW64\vynrbjdr\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2548
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create vynrbjdr binPath= "C:\Windows\SysWOW64\vynrbjdr\kjvrwgqd.exe /d\"C:\Users\Admin\AppData\Local\Temp\2024-09-21_cb445682e33a6b13091fb9d6a70c2120_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2260
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description vynrbjdr "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2824
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start vynrbjdr
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2768
- 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:2644

C:\Windows\SysWOW64\vynrbjdr\kjvrwgqd.exe
C:\Windows\SysWOW64\vynrbjdr\kjvrwgqd.exe /d"C:\Users\Admin\AppData\Local\Temp\2024-09-21_cb445682e33a6b13091fb9d6a70c2120_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2960
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Windows security bypass
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:604

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

System Services

T1569

Service Execution

T1569.002

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Defense Evasion

Impair Defenses

T1562

Disable or Modify System Firewall

T1562.004

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\kjvrwgqd.exe

Filesize
12.5MB

MD5
edf05865c9f02d599556bdbe901e5164

SHA1
033dcfbb6f7b2edd07f1020aafacd73625119b0c

SHA256
c00822c2cce7d109638a6f55c6329ff0eb57f2350d11d245752c79e9283159f9

SHA512
d6b2e49ffec7d0bd6696eec591fc1c04b8528e7b72d02705440f5f9a7622c5de28dba1567e9064ba13ad64179808954e4dcfeecc3d76d45c04555d1e5229f6f3

Download Submit
memory/604-10-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/604-9-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/604-7-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/604-15-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/604-16-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2212-1-0x0000000000640000-0x0000000000740000-memory.dmp

Filesize
1024KB

Download
memory/2212-2-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2212-14-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2212-13-0x0000000000400000-0x000000000051A000-memory.dmp

Filesize
1.1MB

Download
memory/2960-11-0x0000000000400000-0x000000000051A000-memory.dmp

Filesize
1.1MB

Download