tofsee | afac4eb9d79efcd0395d59351bdef0776b852ea337601cfbd9a79da3a1fad6b2

General

Target

afac4eb9d79efcd0395d59351bdef0776b852ea337601cfbd9a79da3a1fad6b2.exe
Size

11.7MB
MD5

41e5a3e35502d37dbc0bf74651a2ec6c
SHA1

f50ce2fc231fc554a1592af2ca6ac1a8c4918286
SHA256

afac4eb9d79efcd0395d59351bdef0776b852ea337601cfbd9a79da3a1fad6b2
SHA512

0ff1255b91beb2c252a436fdc095cacb5a19c674037457743406024174e841d7285c0aa5abcfd47c7bd21999f313e13343e3675d3ecdbb8f9d760775befd9db9
SSDEEP

49152:Dyn7x7x7x7x7x7x7x7x7x7x7x7x7x7x7x7x7x7x7x7x7x7x7x7x7x7x7x7x7x7xd:DyB

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation 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
Tofsee family
tofsee
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

Processes:

netsh.exe

pid process

3404 netsh.exe

pid	process
3404	netsh.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

svchost.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\srqvnpir\ImagePath = "C:\\Windows\\SysWOW64\\srqvnpir\\tgspivak.exe"	svchost.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

afac4eb9d79efcd0395d59351bdef0776b852ea337601cfbd9a79da3a1fad6b2.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation	afac4eb9d79efcd0395d59351bdef0776b852ea337601cfbd9a79da3a1fad6b2.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

772 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

tgspivak.exe

pid process

4764 tgspivak.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

tgspivak.exe

description pid process target process

PID 4764 set thread context of 772 4764 tgspivak.exe svchost.exe
Launches sc.exe 3 IoCs
Sc.exe is a Windows utlilty to control services on the system.

Processes:

sc.exesc.exesc.exe

pid process

5068 sc.exe
1184 sc.exe
4796 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
772	svchost.exe

pid	process
4764	tgspivak.exe

description	pid	process	target process
PID 4764 set thread context of 772	4764	tgspivak.exe	svchost.exe

pid	process
5068	sc.exe
1184	sc.exe
4796	sc.exe

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

Processes:

netsh.exe

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

Program crash 2 IoCs

Processes:

WerFault.exeWerFault.exe

pid	pid_target	process	target process
372	2932	WerFault.exe	afac4eb9d79efcd0395d59351bdef0776b852ea337601cfbd9a79da3a1fad6b2.exe
4948	4764	WerFault.exe	tgspivak.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

Processes:

sc.exenetsh.exetgspivak.exeafac4eb9d79efcd0395d59351bdef0776b852ea337601cfbd9a79da3a1fad6b2.execmd.execmd.exesc.exesc.exesvchost.exe

description	ioc	process
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	tgspivak.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	afac4eb9d79efcd0395d59351bdef0776b852ea337601cfbd9a79da3a1fad6b2.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	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

afac4eb9d79efcd0395d59351bdef0776b852ea337601cfbd9a79da3a1fad6b2.exetgspivak.exe

description	pid	process	target process
PID 2932 wrote to memory of 2820	2932	afac4eb9d79efcd0395d59351bdef0776b852ea337601cfbd9a79da3a1fad6b2.exe	cmd.exe
PID 2932 wrote to memory of 2820	2932	afac4eb9d79efcd0395d59351bdef0776b852ea337601cfbd9a79da3a1fad6b2.exe	cmd.exe
PID 2932 wrote to memory of 2820	2932	afac4eb9d79efcd0395d59351bdef0776b852ea337601cfbd9a79da3a1fad6b2.exe	cmd.exe
PID 2932 wrote to memory of 1576	2932	afac4eb9d79efcd0395d59351bdef0776b852ea337601cfbd9a79da3a1fad6b2.exe	cmd.exe
PID 2932 wrote to memory of 1576	2932	afac4eb9d79efcd0395d59351bdef0776b852ea337601cfbd9a79da3a1fad6b2.exe	cmd.exe
PID 2932 wrote to memory of 1576	2932	afac4eb9d79efcd0395d59351bdef0776b852ea337601cfbd9a79da3a1fad6b2.exe	cmd.exe
PID 2932 wrote to memory of 5068	2932	afac4eb9d79efcd0395d59351bdef0776b852ea337601cfbd9a79da3a1fad6b2.exe	sc.exe
PID 2932 wrote to memory of 5068	2932	afac4eb9d79efcd0395d59351bdef0776b852ea337601cfbd9a79da3a1fad6b2.exe	sc.exe
PID 2932 wrote to memory of 5068	2932	afac4eb9d79efcd0395d59351bdef0776b852ea337601cfbd9a79da3a1fad6b2.exe	sc.exe
PID 2932 wrote to memory of 1184	2932	afac4eb9d79efcd0395d59351bdef0776b852ea337601cfbd9a79da3a1fad6b2.exe	sc.exe
PID 2932 wrote to memory of 1184	2932	afac4eb9d79efcd0395d59351bdef0776b852ea337601cfbd9a79da3a1fad6b2.exe	sc.exe
PID 2932 wrote to memory of 1184	2932	afac4eb9d79efcd0395d59351bdef0776b852ea337601cfbd9a79da3a1fad6b2.exe	sc.exe
PID 2932 wrote to memory of 4796	2932	afac4eb9d79efcd0395d59351bdef0776b852ea337601cfbd9a79da3a1fad6b2.exe	sc.exe
PID 2932 wrote to memory of 4796	2932	afac4eb9d79efcd0395d59351bdef0776b852ea337601cfbd9a79da3a1fad6b2.exe	sc.exe
PID 2932 wrote to memory of 4796	2932	afac4eb9d79efcd0395d59351bdef0776b852ea337601cfbd9a79da3a1fad6b2.exe	sc.exe
PID 2932 wrote to memory of 3404	2932	afac4eb9d79efcd0395d59351bdef0776b852ea337601cfbd9a79da3a1fad6b2.exe	netsh.exe
PID 2932 wrote to memory of 3404	2932	afac4eb9d79efcd0395d59351bdef0776b852ea337601cfbd9a79da3a1fad6b2.exe	netsh.exe
PID 2932 wrote to memory of 3404	2932	afac4eb9d79efcd0395d59351bdef0776b852ea337601cfbd9a79da3a1fad6b2.exe	netsh.exe
PID 4764 wrote to memory of 772	4764	tgspivak.exe	svchost.exe
PID 4764 wrote to memory of 772	4764	tgspivak.exe	svchost.exe
PID 4764 wrote to memory of 772	4764	tgspivak.exe	svchost.exe
PID 4764 wrote to memory of 772	4764	tgspivak.exe	svchost.exe
PID 4764 wrote to memory of 772	4764	tgspivak.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\afac4eb9d79efcd0395d59351bdef0776b852ea337601cfbd9a79da3a1fad6b2.exe
"C:\Users\Admin\AppData\Local\Temp\afac4eb9d79efcd0395d59351bdef0776b852ea337601cfbd9a79da3a1fad6b2.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2932
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\srqvnpir\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2820
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\tgspivak.exe" C:\Windows\SysWOW64\srqvnpir\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1576
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create srqvnpir binPath= "C:\Windows\SysWOW64\srqvnpir\tgspivak.exe /d\"C:\Users\Admin\AppData\Local\Temp\afac4eb9d79efcd0395d59351bdef0776b852ea337601cfbd9a79da3a1fad6b2.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:5068
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description srqvnpir "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1184
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start srqvnpir
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4796
- 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:3404
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2932 -s 1220
  2⤵
  - Program crash
  PID:372

C:\Windows\SysWOW64\srqvnpir\tgspivak.exe
C:\Windows\SysWOW64\srqvnpir\tgspivak.exe /d"C:\Users\Admin\AppData\Local\Temp\afac4eb9d79efcd0395d59351bdef0776b852ea337601cfbd9a79da3a1fad6b2.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4764
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:772
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4764 -s 508
  2⤵
  - Program crash
  PID:4948

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 2932 -ip 2932
1⤵
PID:5052

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 4764 -ip 4764
1⤵
PID:2056

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

System Services

1

T1569

Service Execution

1

T1569.002

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

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

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

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Defense Evasion

Impair Defenses

1

T1562

Disable or Modify System Firewall

Modify Registry

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
13.0MB

MD5
3dc8d4577bf5c79f5ed69f2d970fe12d

SHA1
6e08cc8c90acbe96e8acea0cdb8b0d63c9f91b3c

SHA256
423c95fc1b5450ffb6350a21989a693f44f517d842b71f9e35ce9d9f8bc1019f

SHA512
9c2fee0094d13b394d6531559149e786a5fd1080dc51f152607403933a0e8376191df5f6ef4855dd6ba9afbaf424f9d4cd6a3a4239f267d25105216b4952dbd2

Download Submit
memory/772-13-0x00000000009B0000-0x00000000009C5000-memory.dmp

Filesize
84KB

Download
memory/772-15-0x00000000009B0000-0x00000000009C5000-memory.dmp

Filesize
84KB

Download
memory/772-16-0x00000000009B0000-0x00000000009C5000-memory.dmp

Filesize
84KB

Download
memory/2932-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2932-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/2932-10-0x0000000000400000-0x0000000000461000-memory.dmp

Filesize
388KB

Download
memory/2932-12-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2932-11-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/2932-1-0x00000000005F0000-0x00000000006F0000-memory.dmp

Filesize
1024KB

Download
memory/4764-8-0x0000000000400000-0x0000000000461000-memory.dmp

Filesize
388KB

Download
memory/4764-9-0x0000000000400000-0x0000000000461000-memory.dmp

Filesize
388KB

Download
memory/4764-18-0x0000000000400000-0x0000000000461000-memory.dmp

Filesize
388KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads