tofsee | 74bd7dc9f31e2ed15b4a5f6b855c60bfb7e9edfa61837a49a3e12ac50a6cee93

Analysis

max time kernel
144s
max time network
121s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
10-01-2025 15:42

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General

Target

2025-01-10_792e3cfa2dffd5d810b91ed078215e83_mafia.exe
Size

15.0MB
MD5

792e3cfa2dffd5d810b91ed078215e83
SHA1

525ce22182a5762c53562774afddeb73d6624548
SHA256

74bd7dc9f31e2ed15b4a5f6b855c60bfb7e9edfa61837a49a3e12ac50a6cee93
SHA512

485154fb67322713eaabeee05db0f6d2fe9a42ac1be3a896c0768c0e6d1d645db9f386901865a507938999b4567d51806ecca3cf627c2187552ccbaa98a29ac4
SSDEEP

6144:0VXdWonWCgHBEJE968VNNXSB3sFD+yZpp:mbnWvHBEJM6WNNCB36D+y

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
Tofsee family
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\jjcyahpf = "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
2744	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\jjcyahpf\ImagePath = "C:\\Windows\\SysWOW64\\jjcyahpf\\pcolerwg.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2780	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2736	pcolerwg.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2736 set thread context of 2780	2736	pcolerwg.exe	41

Launches sc.exe 3 IoCs

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

pid	Process
2236	sc.exe
2640	sc.exe
2456	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	pcolerwg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-01-10_792e3cfa2dffd5d810b91ed078215e83_mafia.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	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

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 1568 wrote to memory of 2088	1568	2025-01-10_792e3cfa2dffd5d810b91ed078215e83_mafia.exe	30
PID 1568 wrote to memory of 2088	1568	2025-01-10_792e3cfa2dffd5d810b91ed078215e83_mafia.exe	30
PID 1568 wrote to memory of 2088	1568	2025-01-10_792e3cfa2dffd5d810b91ed078215e83_mafia.exe	30
PID 1568 wrote to memory of 2088	1568	2025-01-10_792e3cfa2dffd5d810b91ed078215e83_mafia.exe	30
PID 1568 wrote to memory of 1628	1568	2025-01-10_792e3cfa2dffd5d810b91ed078215e83_mafia.exe	32
PID 1568 wrote to memory of 1628	1568	2025-01-10_792e3cfa2dffd5d810b91ed078215e83_mafia.exe	32
PID 1568 wrote to memory of 1628	1568	2025-01-10_792e3cfa2dffd5d810b91ed078215e83_mafia.exe	32
PID 1568 wrote to memory of 1628	1568	2025-01-10_792e3cfa2dffd5d810b91ed078215e83_mafia.exe	32
PID 1568 wrote to memory of 2456	1568	2025-01-10_792e3cfa2dffd5d810b91ed078215e83_mafia.exe	34
PID 1568 wrote to memory of 2456	1568	2025-01-10_792e3cfa2dffd5d810b91ed078215e83_mafia.exe	34
PID 1568 wrote to memory of 2456	1568	2025-01-10_792e3cfa2dffd5d810b91ed078215e83_mafia.exe	34
PID 1568 wrote to memory of 2456	1568	2025-01-10_792e3cfa2dffd5d810b91ed078215e83_mafia.exe	34
PID 1568 wrote to memory of 2236	1568	2025-01-10_792e3cfa2dffd5d810b91ed078215e83_mafia.exe	36
PID 1568 wrote to memory of 2236	1568	2025-01-10_792e3cfa2dffd5d810b91ed078215e83_mafia.exe	36
PID 1568 wrote to memory of 2236	1568	2025-01-10_792e3cfa2dffd5d810b91ed078215e83_mafia.exe	36
PID 1568 wrote to memory of 2236	1568	2025-01-10_792e3cfa2dffd5d810b91ed078215e83_mafia.exe	36
PID 1568 wrote to memory of 2640	1568	2025-01-10_792e3cfa2dffd5d810b91ed078215e83_mafia.exe	38
PID 1568 wrote to memory of 2640	1568	2025-01-10_792e3cfa2dffd5d810b91ed078215e83_mafia.exe	38
PID 1568 wrote to memory of 2640	1568	2025-01-10_792e3cfa2dffd5d810b91ed078215e83_mafia.exe	38
PID 1568 wrote to memory of 2640	1568	2025-01-10_792e3cfa2dffd5d810b91ed078215e83_mafia.exe	38
PID 2736 wrote to memory of 2780	2736	pcolerwg.exe	41
PID 2736 wrote to memory of 2780	2736	pcolerwg.exe	41
PID 2736 wrote to memory of 2780	2736	pcolerwg.exe	41
PID 2736 wrote to memory of 2780	2736	pcolerwg.exe	41
PID 2736 wrote to memory of 2780	2736	pcolerwg.exe	41
PID 2736 wrote to memory of 2780	2736	pcolerwg.exe	41
PID 1568 wrote to memory of 2744	1568	2025-01-10_792e3cfa2dffd5d810b91ed078215e83_mafia.exe	42
PID 1568 wrote to memory of 2744	1568	2025-01-10_792e3cfa2dffd5d810b91ed078215e83_mafia.exe	42
PID 1568 wrote to memory of 2744	1568	2025-01-10_792e3cfa2dffd5d810b91ed078215e83_mafia.exe	42
PID 1568 wrote to memory of 2744	1568	2025-01-10_792e3cfa2dffd5d810b91ed078215e83_mafia.exe	42

C:\Users\Admin\AppData\Local\Temp\2025-01-10_792e3cfa2dffd5d810b91ed078215e83_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-10_792e3cfa2dffd5d810b91ed078215e83_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1568
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\jjcyahpf\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2088
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\pcolerwg.exe" C:\Windows\SysWOW64\jjcyahpf\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1628
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create jjcyahpf binPath= "C:\Windows\SysWOW64\jjcyahpf\pcolerwg.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-10_792e3cfa2dffd5d810b91ed078215e83_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2456
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description jjcyahpf "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2236
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start jjcyahpf
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2640
- 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:2744

C:\Windows\SysWOW64\jjcyahpf\pcolerwg.exe
C:\Windows\SysWOW64\jjcyahpf\pcolerwg.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-10_792e3cfa2dffd5d810b91ed078215e83_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2736
- 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:2780

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\pcolerwg.exe

Filesize
14.2MB

MD5
b7df36ce406d53afa76f2dfb6fbbfc46

SHA1
0b446008c5bde4cc9be768c76845a46b068ac85f

SHA256
fda6575fd196653136be1ae22f9d6ccb959e88f8ef7de192e538cb3ca806410c

SHA512
39054cd8db07f7d7046ba594d089ea176004c62c98b12af03dcc4fa153e3dc8d1d26068415f2cc16500de56bb26f3cb7a0a199a4092b883efbe49d6e13249dac

Download Submit
memory/1568-14-0x0000000000400000-0x0000000000455000-memory.dmp

Filesize
340KB

Download
memory/1568-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1568-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/1568-1-0x00000000005A0000-0x00000000006A0000-memory.dmp

Filesize
1024KB

Download
memory/1568-16-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1568-15-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2736-12-0x0000000000400000-0x0000000000455000-memory.dmp

Filesize
340KB

Download
memory/2780-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2780-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2780-8-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2780-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2780-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads