tofsee | 24c25a017a0c219c93f2dec202507b2fe8040143c2a2ed2ed71ffbe2885d7f10

General

Target

b93e35e817a1f4280693908ff91f1f74_mafia_JC.exe
Size

14.7MB
MD5

b93e35e817a1f4280693908ff91f1f74
SHA1

23136bdf32692188464b0a9eae05c0d69028c496
SHA256

24c25a017a0c219c93f2dec202507b2fe8040143c2a2ed2ed71ffbe2885d7f10
SHA512

782720d3795a94aab59c1883501ace7499a0b64b80dc935eda1d65e561bce0dd816677ba0a4d9b5cf932b5a143bf8748560ef85382bfe4713b07a967e2b0f937
SSDEEP

12288:9Vbj7zJB99tzBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBx:9JzXd

Score

10^/10

tofsee evasion persistence 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
Creates new service(s) 1 TTPs
persistence

Windows Service
T1543.003

Modifies Windows Firewall 1 TTPs 1 IoCs

evasion

Windows Service

T1543.003

pid	Process
4788	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\iejtnfww\ImagePath = "C:\\Windows\\SysWOW64\\iejtnfww\\gxtarquy.exe"	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2148	gxtarquy.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2148 set thread context of 2188	2148	gxtarquy.exe	102

Launches sc.exe 3 IoCs

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

pid	Process
4760	sc.exe
4024	sc.exe
1792	sc.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3064 wrote to memory of 2020	3064	b93e35e817a1f4280693908ff91f1f74_mafia_JC.exe	87
PID 3064 wrote to memory of 2020	3064	b93e35e817a1f4280693908ff91f1f74_mafia_JC.exe	87
PID 3064 wrote to memory of 2020	3064	b93e35e817a1f4280693908ff91f1f74_mafia_JC.exe	87
PID 3064 wrote to memory of 4336	3064	b93e35e817a1f4280693908ff91f1f74_mafia_JC.exe	89
PID 3064 wrote to memory of 4336	3064	b93e35e817a1f4280693908ff91f1f74_mafia_JC.exe	89
PID 3064 wrote to memory of 4336	3064	b93e35e817a1f4280693908ff91f1f74_mafia_JC.exe	89
PID 3064 wrote to memory of 4760	3064	b93e35e817a1f4280693908ff91f1f74_mafia_JC.exe	91
PID 3064 wrote to memory of 4760	3064	b93e35e817a1f4280693908ff91f1f74_mafia_JC.exe	91
PID 3064 wrote to memory of 4760	3064	b93e35e817a1f4280693908ff91f1f74_mafia_JC.exe	91
PID 3064 wrote to memory of 4024	3064	b93e35e817a1f4280693908ff91f1f74_mafia_JC.exe	93
PID 3064 wrote to memory of 4024	3064	b93e35e817a1f4280693908ff91f1f74_mafia_JC.exe	93
PID 3064 wrote to memory of 4024	3064	b93e35e817a1f4280693908ff91f1f74_mafia_JC.exe	93
PID 3064 wrote to memory of 1792	3064	b93e35e817a1f4280693908ff91f1f74_mafia_JC.exe	95
PID 3064 wrote to memory of 1792	3064	b93e35e817a1f4280693908ff91f1f74_mafia_JC.exe	95
PID 3064 wrote to memory of 1792	3064	b93e35e817a1f4280693908ff91f1f74_mafia_JC.exe	95
PID 3064 wrote to memory of 4788	3064	b93e35e817a1f4280693908ff91f1f74_mafia_JC.exe	98
PID 3064 wrote to memory of 4788	3064	b93e35e817a1f4280693908ff91f1f74_mafia_JC.exe	98
PID 3064 wrote to memory of 4788	3064	b93e35e817a1f4280693908ff91f1f74_mafia_JC.exe	98
PID 2148 wrote to memory of 2188	2148	gxtarquy.exe	102
PID 2148 wrote to memory of 2188	2148	gxtarquy.exe	102
PID 2148 wrote to memory of 2188	2148	gxtarquy.exe	102
PID 2148 wrote to memory of 2188	2148	gxtarquy.exe	102
PID 2148 wrote to memory of 2188	2148	gxtarquy.exe	102

C:\Users\Admin\AppData\Local\Temp\b93e35e817a1f4280693908ff91f1f74_mafia_JC.exe
"C:\Users\Admin\AppData\Local\Temp\b93e35e817a1f4280693908ff91f1f74_mafia_JC.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:3064
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\iejtnfww\
  2⤵
  PID:2020
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\gxtarquy.exe" C:\Windows\SysWOW64\iejtnfww\
  2⤵
  PID:4336
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create iejtnfww binPath= "C:\Windows\SysWOW64\iejtnfww\gxtarquy.exe /d\"C:\Users\Admin\AppData\Local\Temp\b93e35e817a1f4280693908ff91f1f74_mafia_JC.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  PID:4760
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description iejtnfww "wifi internet conection"
  2⤵
  - Launches sc.exe
  PID:4024
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start iejtnfww
  2⤵
  - Launches sc.exe
  PID:1792
- 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
  PID:4788

C:\Windows\SysWOW64\iejtnfww\gxtarquy.exe
C:\Windows\SysWOW64\iejtnfww\gxtarquy.exe /d"C:\Users\Admin\AppData\Local\Temp\b93e35e817a1f4280693908ff91f1f74_mafia_JC.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2148
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  PID:2188

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

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

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

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
14.9MB

MD5
634a5c2bdf90760032cc96423fd4f682

SHA1
691de7060a3ffd2efd3b10074bfbe803d80e1b83

SHA256
c29510517b0602342fdf32fccafe5412e594a930117ac064b98b9c9cc359246c

SHA512
6833d18ab42b46ffc8e28173c211f463915a9cc5c90795e3d1b6dea8d30628066331fee8643976a30668604bc8c802ed6d689ef79e374276336ec2a916506254

Download Submit
C:\Windows\SysWOW64\iejtnfww\gxtarquy.exe

Filesize
14.9MB

MD5
634a5c2bdf90760032cc96423fd4f682

SHA1
691de7060a3ffd2efd3b10074bfbe803d80e1b83

SHA256
c29510517b0602342fdf32fccafe5412e594a930117ac064b98b9c9cc359246c

SHA512
6833d18ab42b46ffc8e28173c211f463915a9cc5c90795e3d1b6dea8d30628066331fee8643976a30668604bc8c802ed6d689ef79e374276336ec2a916506254

Download Submit
memory/2148-10-0x00000000007B0000-0x00000000008B0000-memory.dmp

Filesize
1024KB

Download
memory/2148-11-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/2148-13-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/2188-12-0x0000000000B20000-0x0000000000B35000-memory.dmp

Filesize
84KB

Download
memory/2188-17-0x0000000000B20000-0x0000000000B35000-memory.dmp

Filesize
84KB

Download
memory/2188-18-0x0000000000B20000-0x0000000000B35000-memory.dmp

Filesize
84KB

Download
memory/2188-19-0x0000000000B20000-0x0000000000B35000-memory.dmp

Filesize
84KB

Download
memory/3064-3-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/3064-2-0x00000000006D0000-0x00000000006E3000-memory.dmp

Filesize
76KB

Download
memory/3064-6-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/3064-7-0x00000000006D0000-0x00000000006E3000-memory.dmp

Filesize
76KB

Download
memory/3064-1-0x0000000000710000-0x0000000000810000-memory.dmp

Filesize
1024KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads