tofsee | e3b6a8b0c0f4599ed03d7a8b7cd16bb829ebebab9ed8c61f456e2545540c5aae

Analysis

max time kernel
144s
max time network
120s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
15-08-2024 20:32

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General

Target

2024-08-15_febc322e414acbc8e52470c0d4f5309a_mafia.exe
Size

11.1MB
MD5

febc322e414acbc8e52470c0d4f5309a
SHA1

4c46c19bfc111b8941a87ea27ab615250559cbe7
SHA256

e3b6a8b0c0f4599ed03d7a8b7cd16bb829ebebab9ed8c61f456e2545540c5aae
SHA512

73ca6cc0084b9f398cfc2663a3a9fc20c53097f46230938b9ab83d90d08fa8fafc69cdc9f452f0b1c39141c289b11cab7fb1373cb07f5fb724777d3800c23c39
SSDEEP

6144:L+rWO2zeSPDjMXMH7Ll4aFpWVqIwUAP97GEwHrG2+e1x2:L+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

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\SysWOW64\euigwsvy = "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

pid	Process
2636	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\euigwsvy\ImagePath = "C:\\Windows\\SysWOW64\\euigwsvy\\oabvqmnk.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2136	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2272	oabvqmnk.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2272 set thread context of 2136	2272	oabvqmnk.exe	42

Launches sc.exe 3 IoCs

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

pid	Process
2640	sc.exe
2832	sc.exe
2816	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

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	2024-08-15_febc322e414acbc8e52470c0d4f5309a_mafia.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	oabvqmnk.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.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	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	svchost.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2632 wrote to memory of 2492	2632	2024-08-15_febc322e414acbc8e52470c0d4f5309a_mafia.exe	31
PID 2632 wrote to memory of 2492	2632	2024-08-15_febc322e414acbc8e52470c0d4f5309a_mafia.exe	31
PID 2632 wrote to memory of 2492	2632	2024-08-15_febc322e414acbc8e52470c0d4f5309a_mafia.exe	31
PID 2632 wrote to memory of 2492	2632	2024-08-15_febc322e414acbc8e52470c0d4f5309a_mafia.exe	31
PID 2632 wrote to memory of 2496	2632	2024-08-15_febc322e414acbc8e52470c0d4f5309a_mafia.exe	33
PID 2632 wrote to memory of 2496	2632	2024-08-15_febc322e414acbc8e52470c0d4f5309a_mafia.exe	33
PID 2632 wrote to memory of 2496	2632	2024-08-15_febc322e414acbc8e52470c0d4f5309a_mafia.exe	33
PID 2632 wrote to memory of 2496	2632	2024-08-15_febc322e414acbc8e52470c0d4f5309a_mafia.exe	33
PID 2632 wrote to memory of 2640	2632	2024-08-15_febc322e414acbc8e52470c0d4f5309a_mafia.exe	35
PID 2632 wrote to memory of 2640	2632	2024-08-15_febc322e414acbc8e52470c0d4f5309a_mafia.exe	35
PID 2632 wrote to memory of 2640	2632	2024-08-15_febc322e414acbc8e52470c0d4f5309a_mafia.exe	35
PID 2632 wrote to memory of 2640	2632	2024-08-15_febc322e414acbc8e52470c0d4f5309a_mafia.exe	35
PID 2632 wrote to memory of 2832	2632	2024-08-15_febc322e414acbc8e52470c0d4f5309a_mafia.exe	37
PID 2632 wrote to memory of 2832	2632	2024-08-15_febc322e414acbc8e52470c0d4f5309a_mafia.exe	37
PID 2632 wrote to memory of 2832	2632	2024-08-15_febc322e414acbc8e52470c0d4f5309a_mafia.exe	37
PID 2632 wrote to memory of 2832	2632	2024-08-15_febc322e414acbc8e52470c0d4f5309a_mafia.exe	37
PID 2632 wrote to memory of 2816	2632	2024-08-15_febc322e414acbc8e52470c0d4f5309a_mafia.exe	39
PID 2632 wrote to memory of 2816	2632	2024-08-15_febc322e414acbc8e52470c0d4f5309a_mafia.exe	39
PID 2632 wrote to memory of 2816	2632	2024-08-15_febc322e414acbc8e52470c0d4f5309a_mafia.exe	39
PID 2632 wrote to memory of 2816	2632	2024-08-15_febc322e414acbc8e52470c0d4f5309a_mafia.exe	39
PID 2272 wrote to memory of 2136	2272	oabvqmnk.exe	42
PID 2272 wrote to memory of 2136	2272	oabvqmnk.exe	42
PID 2272 wrote to memory of 2136	2272	oabvqmnk.exe	42
PID 2272 wrote to memory of 2136	2272	oabvqmnk.exe	42
PID 2272 wrote to memory of 2136	2272	oabvqmnk.exe	42
PID 2272 wrote to memory of 2136	2272	oabvqmnk.exe	42
PID 2632 wrote to memory of 2636	2632	2024-08-15_febc322e414acbc8e52470c0d4f5309a_mafia.exe	43
PID 2632 wrote to memory of 2636	2632	2024-08-15_febc322e414acbc8e52470c0d4f5309a_mafia.exe	43
PID 2632 wrote to memory of 2636	2632	2024-08-15_febc322e414acbc8e52470c0d4f5309a_mafia.exe	43
PID 2632 wrote to memory of 2636	2632	2024-08-15_febc322e414acbc8e52470c0d4f5309a_mafia.exe	43

C:\Users\Admin\AppData\Local\Temp\2024-08-15_febc322e414acbc8e52470c0d4f5309a_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2024-08-15_febc322e414acbc8e52470c0d4f5309a_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2632
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\euigwsvy\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2492
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\oabvqmnk.exe" C:\Windows\SysWOW64\euigwsvy\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2496
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create euigwsvy binPath= "C:\Windows\SysWOW64\euigwsvy\oabvqmnk.exe /d\"C:\Users\Admin\AppData\Local\Temp\2024-08-15_febc322e414acbc8e52470c0d4f5309a_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2640
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description euigwsvy "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2832
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start euigwsvy
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2816
- 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:2636

C:\Windows\SysWOW64\euigwsvy\oabvqmnk.exe
C:\Windows\SysWOW64\euigwsvy\oabvqmnk.exe /d"C:\Users\Admin\AppData\Local\Temp\2024-08-15_febc322e414acbc8e52470c0d4f5309a_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2272
- 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:2136

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\oabvqmnk.exe

Filesize
11.1MB

MD5
594eb5647f1922338b672b54112b6aeb

SHA1
2043508bbfd16bcf0e9c756dda27317361058fca

SHA256
3f37d6f581e9eaa22341129e2d34c7d92d48512a75dd8b1acac323088754eb8e

SHA512
5ed8308add1b088ad44473d8e2ac3b52bdaf32397a23bd2fbc3df3eb71c42546186ddd2b9a6beb0fec09891e8adccbe43628a49191ddebbf41fc93f21c9e5314

Download Submit
memory/2136-10-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2136-9-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2136-7-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2136-15-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2136-16-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2272-11-0x0000000000400000-0x000000000051A000-memory.dmp

Filesize
1.1MB

Download
memory/2632-1-0x00000000002D0000-0x00000000003D0000-memory.dmp

Filesize
1024KB

Download
memory/2632-2-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2632-14-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2632-13-0x0000000000400000-0x000000000051A000-memory.dmp

Filesize
1.1MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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