tofsee | 7dcf006ee2cc77b93ea32f21abf7cdf57032186f9a5bc5d9d7654179ff6e0170

Analysis

max time kernel
144s
max time network
138s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
30/12/2023, 23:47

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General

Target

2087dcbdd917f0c96f2e4067b4e63d49.exe
Size

13.1MB
MD5

2087dcbdd917f0c96f2e4067b4e63d49
SHA1

1b39f885512cf99e1f10a51308631a96f982f970
SHA256

7dcf006ee2cc77b93ea32f21abf7cdf57032186f9a5bc5d9d7654179ff6e0170
SHA512

6feba0192685c4c959b0d87c1501c4e7231a7a5bc20fda842fea9248c9a69e530b039cb7da5bed20cae25bd6dadf75a5df46bbf87da6273c72c52eb2f83fb29b
SSDEEP

196608:PXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXH:

Score

10^/10

tofsee evasion persistence trojan

Malware Config

Extracted

Family

tofsee

43.231.4.6

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\mphxpygj = "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
2208	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\mphxpygj\ImagePath = "C:\\Windows\\SysWOW64\\mphxpygj\\vnbpdcsm.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
3028	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2604	vnbpdcsm.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2604 set thread context of 3028	2604	vnbpdcsm.exe	41

Launches sc.exe 3 IoCs

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

pid	Process
2716	sc.exe
2584	sc.exe
2464	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 1256 wrote to memory of 2136	1256	2087dcbdd917f0c96f2e4067b4e63d49.exe	28
PID 1256 wrote to memory of 2136	1256	2087dcbdd917f0c96f2e4067b4e63d49.exe	28
PID 1256 wrote to memory of 2136	1256	2087dcbdd917f0c96f2e4067b4e63d49.exe	28
PID 1256 wrote to memory of 2136	1256	2087dcbdd917f0c96f2e4067b4e63d49.exe	28
PID 1256 wrote to memory of 2828	1256	2087dcbdd917f0c96f2e4067b4e63d49.exe	30
PID 1256 wrote to memory of 2828	1256	2087dcbdd917f0c96f2e4067b4e63d49.exe	30
PID 1256 wrote to memory of 2828	1256	2087dcbdd917f0c96f2e4067b4e63d49.exe	30
PID 1256 wrote to memory of 2828	1256	2087dcbdd917f0c96f2e4067b4e63d49.exe	30
PID 1256 wrote to memory of 2716	1256	2087dcbdd917f0c96f2e4067b4e63d49.exe	32
PID 1256 wrote to memory of 2716	1256	2087dcbdd917f0c96f2e4067b4e63d49.exe	32
PID 1256 wrote to memory of 2716	1256	2087dcbdd917f0c96f2e4067b4e63d49.exe	32
PID 1256 wrote to memory of 2716	1256	2087dcbdd917f0c96f2e4067b4e63d49.exe	32
PID 1256 wrote to memory of 2584	1256	2087dcbdd917f0c96f2e4067b4e63d49.exe	35
PID 1256 wrote to memory of 2584	1256	2087dcbdd917f0c96f2e4067b4e63d49.exe	35
PID 1256 wrote to memory of 2584	1256	2087dcbdd917f0c96f2e4067b4e63d49.exe	35
PID 1256 wrote to memory of 2584	1256	2087dcbdd917f0c96f2e4067b4e63d49.exe	35
PID 1256 wrote to memory of 2464	1256	2087dcbdd917f0c96f2e4067b4e63d49.exe	37
PID 1256 wrote to memory of 2464	1256	2087dcbdd917f0c96f2e4067b4e63d49.exe	37
PID 1256 wrote to memory of 2464	1256	2087dcbdd917f0c96f2e4067b4e63d49.exe	37
PID 1256 wrote to memory of 2464	1256	2087dcbdd917f0c96f2e4067b4e63d49.exe	37
PID 1256 wrote to memory of 2208	1256	2087dcbdd917f0c96f2e4067b4e63d49.exe	39
PID 1256 wrote to memory of 2208	1256	2087dcbdd917f0c96f2e4067b4e63d49.exe	39
PID 1256 wrote to memory of 2208	1256	2087dcbdd917f0c96f2e4067b4e63d49.exe	39
PID 1256 wrote to memory of 2208	1256	2087dcbdd917f0c96f2e4067b4e63d49.exe	39
PID 2604 wrote to memory of 3028	2604	vnbpdcsm.exe	41
PID 2604 wrote to memory of 3028	2604	vnbpdcsm.exe	41
PID 2604 wrote to memory of 3028	2604	vnbpdcsm.exe	41
PID 2604 wrote to memory of 3028	2604	vnbpdcsm.exe	41
PID 2604 wrote to memory of 3028	2604	vnbpdcsm.exe	41
PID 2604 wrote to memory of 3028	2604	vnbpdcsm.exe	41

C:\Users\Admin\AppData\Local\Temp\2087dcbdd917f0c96f2e4067b4e63d49.exe
"C:\Users\Admin\AppData\Local\Temp\2087dcbdd917f0c96f2e4067b4e63d49.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1256
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\mphxpygj\
  2⤵
  PID:2136
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\vnbpdcsm.exe" C:\Windows\SysWOW64\mphxpygj\
  2⤵
  PID:2828
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create mphxpygj binPath= "C:\Windows\SysWOW64\mphxpygj\vnbpdcsm.exe /d\"C:\Users\Admin\AppData\Local\Temp\2087dcbdd917f0c96f2e4067b4e63d49.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  PID:2716
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description mphxpygj "wifi internet conection"
  2⤵
  - Launches sc.exe
  PID:2584
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start mphxpygj
  2⤵
  - Launches sc.exe
  PID:2464
- 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:2208

C:\Windows\SysWOW64\mphxpygj\vnbpdcsm.exe
C:\Windows\SysWOW64\mphxpygj\vnbpdcsm.exe /d"C:\Users\Admin\AppData\Local\Temp\2087dcbdd917f0c96f2e4067b4e63d49.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2604
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Windows security bypass
  - Sets service image path in registry
  - Deletes itself
  PID:3028

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

Replay Monitor

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Downloads

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

Filesize
214KB

MD5
b9be604cbcda613b29d086188751f841

SHA1
761a872ad89cc8a279d54bf88ea2f27ba44c5338

SHA256
4ae00a30d9fbb3de3dfb887d3b2a6f1812b105aa445cfc2a830fa2db75293a5a

SHA512
65b210b803c00fd2faf213b693695838df9fcac848c4f797a078daf56405d08406485d29d23f7fb5936611804815615e04e88bd913fab98eac6ece2026c34143

Download Submit
C:\Windows\SysWOW64\mphxpygj\vnbpdcsm.exe

Filesize
1.4MB

MD5
b2161e047f337f6110e04d80d4574623

SHA1
701697f6d5cb1e21a0c9f6b1dc27de17b5866800

SHA256
75c19fbe4f8897a0829c7d7be1ed57ecf8bae02a5dc0cde8f43c8c94085b1f91

SHA512
4ee2eb0404ec120f3bd16f5af4a313c8286af2789c13b371d63fb5e66ff5e95fd7d64101510392787b8d5a2d70ce1ba880df09a9619419c55cd3ce7a447611de

Download Submit
memory/1256-2-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/1256-4-0x0000000000400000-0x00000000008EA000-memory.dmp

Filesize
4.9MB

Download
memory/1256-7-0x0000000000400000-0x00000000008EA000-memory.dmp

Filesize
4.9MB

Download
memory/1256-9-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/1256-8-0x00000000009D0000-0x0000000000AD0000-memory.dmp

Filesize
1024KB

Download
memory/1256-1-0x00000000009D0000-0x0000000000AD0000-memory.dmp

Filesize
1024KB

Download
memory/2604-13-0x0000000000400000-0x00000000008EA000-memory.dmp

Filesize
4.9MB

Download
memory/2604-18-0x0000000000400000-0x00000000008EA000-memory.dmp

Filesize
4.9MB

Download
memory/2604-11-0x0000000000270000-0x0000000000370000-memory.dmp

Filesize
1024KB

Download
memory/3028-14-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/3028-20-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/3028-16-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/3028-22-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/3028-12-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/3028-21-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/3028-23-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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