tofsee | 696b2374ef2ff5564406f1722f31758fb7b6bd30c3e046b628ab8126a7d06c8e

Analysis

max time kernel
147s
max time network
127s
platform
windows7_x64
resource
win7-20231023-en
resource tags

arch:x64arch:x86image:win7-20231023-enlocale:en-usos:windows7-x64system
submitted
14/11/2023, 19:07

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General

Target

696b2374ef2ff5564406f1722f31758fb7b6bd30c3e046b628ab8126a7d06c8e.exe
Size

12.0MB
MD5

8caceb5caa0779ebb2c9767a1e0d5e80
SHA1

385e4b0570b66ef9ba8001f3224693cc0bfd1d54
SHA256

696b2374ef2ff5564406f1722f31758fb7b6bd30c3e046b628ab8126a7d06c8e
SHA512

a7d0064e08ffe1a73e772c04ee5121100f339ff7e8acbd39c497d18fabcbbed362dd41691f69f1898a171a04bcb2e5565fbb979f4ffb500b94e9bda53d1d77f8
SSDEEP

1536:IXKMn8zcQzaBCAXdEWp2xcR+R9ARBYNDW72RS1qziipd1f55iDV9V:ov0KTd3p2xcgrA4NS6jzTjyh9

Score

10^/10

tofsee evasion persistence trojan

Malware Config

Extracted

Family

tofsee

103.248.137.133

59.188.74.26

115.230.124.76

111.121.193.242

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\jzwvzazy = "0"	svchost.exe

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
2668	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\jzwvzazy\ImagePath = "C:\\Windows\\SysWOW64\\jzwvzazy\\gzjijjdf.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2608	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2536	gzjijjdf.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2536 set thread context of 2608	2536	gzjijjdf.exe	41

Launches sc.exe 3 IoCs

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

pid	Process
2724	sc.exe
2780	sc.exe
2700	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 30 IoCs

description	pid	Process	procid_target
PID 2876 wrote to memory of 3032	2876	696b2374ef2ff5564406f1722f31758fb7b6bd30c3e046b628ab8126a7d06c8e.exe	28
PID 2876 wrote to memory of 3032	2876	696b2374ef2ff5564406f1722f31758fb7b6bd30c3e046b628ab8126a7d06c8e.exe	28
PID 2876 wrote to memory of 3032	2876	696b2374ef2ff5564406f1722f31758fb7b6bd30c3e046b628ab8126a7d06c8e.exe	28
PID 2876 wrote to memory of 3032	2876	696b2374ef2ff5564406f1722f31758fb7b6bd30c3e046b628ab8126a7d06c8e.exe	28
PID 2876 wrote to memory of 2736	2876	696b2374ef2ff5564406f1722f31758fb7b6bd30c3e046b628ab8126a7d06c8e.exe	30
PID 2876 wrote to memory of 2736	2876	696b2374ef2ff5564406f1722f31758fb7b6bd30c3e046b628ab8126a7d06c8e.exe	30
PID 2876 wrote to memory of 2736	2876	696b2374ef2ff5564406f1722f31758fb7b6bd30c3e046b628ab8126a7d06c8e.exe	30
PID 2876 wrote to memory of 2736	2876	696b2374ef2ff5564406f1722f31758fb7b6bd30c3e046b628ab8126a7d06c8e.exe	30
PID 2876 wrote to memory of 2724	2876	696b2374ef2ff5564406f1722f31758fb7b6bd30c3e046b628ab8126a7d06c8e.exe	32
PID 2876 wrote to memory of 2724	2876	696b2374ef2ff5564406f1722f31758fb7b6bd30c3e046b628ab8126a7d06c8e.exe	32
PID 2876 wrote to memory of 2724	2876	696b2374ef2ff5564406f1722f31758fb7b6bd30c3e046b628ab8126a7d06c8e.exe	32
PID 2876 wrote to memory of 2724	2876	696b2374ef2ff5564406f1722f31758fb7b6bd30c3e046b628ab8126a7d06c8e.exe	32
PID 2876 wrote to memory of 2780	2876	696b2374ef2ff5564406f1722f31758fb7b6bd30c3e046b628ab8126a7d06c8e.exe	34
PID 2876 wrote to memory of 2780	2876	696b2374ef2ff5564406f1722f31758fb7b6bd30c3e046b628ab8126a7d06c8e.exe	34
PID 2876 wrote to memory of 2780	2876	696b2374ef2ff5564406f1722f31758fb7b6bd30c3e046b628ab8126a7d06c8e.exe	34
PID 2876 wrote to memory of 2780	2876	696b2374ef2ff5564406f1722f31758fb7b6bd30c3e046b628ab8126a7d06c8e.exe	34
PID 2876 wrote to memory of 2700	2876	696b2374ef2ff5564406f1722f31758fb7b6bd30c3e046b628ab8126a7d06c8e.exe	36
PID 2876 wrote to memory of 2700	2876	696b2374ef2ff5564406f1722f31758fb7b6bd30c3e046b628ab8126a7d06c8e.exe	36
PID 2876 wrote to memory of 2700	2876	696b2374ef2ff5564406f1722f31758fb7b6bd30c3e046b628ab8126a7d06c8e.exe	36
PID 2876 wrote to memory of 2700	2876	696b2374ef2ff5564406f1722f31758fb7b6bd30c3e046b628ab8126a7d06c8e.exe	36
PID 2876 wrote to memory of 2668	2876	696b2374ef2ff5564406f1722f31758fb7b6bd30c3e046b628ab8126a7d06c8e.exe	38
PID 2876 wrote to memory of 2668	2876	696b2374ef2ff5564406f1722f31758fb7b6bd30c3e046b628ab8126a7d06c8e.exe	38
PID 2876 wrote to memory of 2668	2876	696b2374ef2ff5564406f1722f31758fb7b6bd30c3e046b628ab8126a7d06c8e.exe	38
PID 2876 wrote to memory of 2668	2876	696b2374ef2ff5564406f1722f31758fb7b6bd30c3e046b628ab8126a7d06c8e.exe	38
PID 2536 wrote to memory of 2608	2536	gzjijjdf.exe	41
PID 2536 wrote to memory of 2608	2536	gzjijjdf.exe	41
PID 2536 wrote to memory of 2608	2536	gzjijjdf.exe	41
PID 2536 wrote to memory of 2608	2536	gzjijjdf.exe	41
PID 2536 wrote to memory of 2608	2536	gzjijjdf.exe	41
PID 2536 wrote to memory of 2608	2536	gzjijjdf.exe	41

C:\Users\Admin\AppData\Local\Temp\696b2374ef2ff5564406f1722f31758fb7b6bd30c3e046b628ab8126a7d06c8e.exe
"C:\Users\Admin\AppData\Local\Temp\696b2374ef2ff5564406f1722f31758fb7b6bd30c3e046b628ab8126a7d06c8e.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2876
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\jzwvzazy\
  2⤵
  PID:3032
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\gzjijjdf.exe" C:\Windows\SysWOW64\jzwvzazy\
  2⤵
  PID:2736
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create jzwvzazy binPath= "C:\Windows\SysWOW64\jzwvzazy\gzjijjdf.exe /d\"C:\Users\Admin\AppData\Local\Temp\696b2374ef2ff5564406f1722f31758fb7b6bd30c3e046b628ab8126a7d06c8e.exe\"" type= own start= auto DisplayName= "P2P Support"
  2⤵
  - Launches sc.exe
  PID:2724
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description jzwvzazy "Internet Mobile Support"
  2⤵
  - Launches sc.exe
  PID:2780
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start jzwvzazy
  2⤵
  - Launches sc.exe
  PID:2700
- 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:2668

C:\Windows\SysWOW64\jzwvzazy\gzjijjdf.exe
C:\Windows\SysWOW64\jzwvzazy\gzjijjdf.exe /d"C:\Users\Admin\AppData\Local\Temp\696b2374ef2ff5564406f1722f31758fb7b6bd30c3e046b628ab8126a7d06c8e.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2536
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Windows security bypass
  - Sets service image path in registry
  - Deletes itself
  PID:2608

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

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

Defense Evasion

Impair Defenses

T1562

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
10.4MB

MD5
707e5ce7eb6a47e41a4cd346d0fd23ea

SHA1
ba9f75bd48357ae19fb35e57f32a5b04b961a9fe

SHA256
2022357fa7d0f4e6bb7417cbd5841c6a3d92dff70321b304f0f1a2514e94444a

SHA512
7be355ed88de26c600e245a08005baf32786a9b9246378bf59275616df2e391e1a547230550063fd073ba63687abe1a1367c2f186ae8fa32774c48e86b2e4b1d

Download Submit
C:\Windows\SysWOW64\jzwvzazy\gzjijjdf.exe

Filesize
10.4MB

MD5
707e5ce7eb6a47e41a4cd346d0fd23ea

SHA1
ba9f75bd48357ae19fb35e57f32a5b04b961a9fe

SHA256
2022357fa7d0f4e6bb7417cbd5841c6a3d92dff70321b304f0f1a2514e94444a

SHA512
7be355ed88de26c600e245a08005baf32786a9b9246378bf59275616df2e391e1a547230550063fd073ba63687abe1a1367c2f186ae8fa32774c48e86b2e4b1d

Download Submit
memory/2536-10-0x00000000002C0000-0x00000000002C1000-memory.dmp

Filesize
4KB

Download
memory/2536-15-0x0000000000400000-0x0000000000423000-memory.dmp

Filesize
140KB

Download
memory/2536-8-0x0000000000400000-0x0000000000423000-memory.dmp

Filesize
140KB

Download
memory/2608-11-0x0000000000080000-0x0000000000096000-memory.dmp

Filesize
88KB

Download
memory/2608-12-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2608-14-0x0000000000080000-0x0000000000096000-memory.dmp

Filesize
88KB

Download
memory/2608-19-0x0000000000080000-0x0000000000096000-memory.dmp

Filesize
88KB

Download
memory/2608-20-0x0000000000080000-0x0000000000096000-memory.dmp

Filesize
88KB

Download
memory/2608-21-0x0000000000080000-0x0000000000096000-memory.dmp

Filesize
88KB

Download
memory/2876-6-0x0000000000400000-0x0000000000423000-memory.dmp

Filesize
140KB

Download
memory/2876-2-0x0000000000400000-0x0000000000423000-memory.dmp

Filesize
140KB

Download
memory/2876-1-0x00000000021B0000-0x00000000021B1000-memory.dmp

Filesize
4KB

Download
memory/2876-0-0x0000000000400000-0x0000000000423000-memory.dmp

Filesize
140KB

Download
memory/2876-3-0x00000000001B0000-0x00000000001B1000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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