tofsee | bf6d3fba5f7f3ee033c1ff21f726477751b3c8934da0568a66d536bae45ce226

Analysis

max time kernel
147s
max time network
121s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
28-11-2024 19:21

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General

Target

2024-11-28_fedd828163ace0def6fe0de3eeeb1efe_karagany_mafia.exe
Size

14.2MB
MD5

fedd828163ace0def6fe0de3eeeb1efe
SHA1

1dff7ea1b1ba8ea8fcabb986c350f3a8188dc98c
SHA256

bf6d3fba5f7f3ee033c1ff21f726477751b3c8934da0568a66d536bae45ce226
SHA512

e5f37ea0cb0fe5cb41977763a04a61f1b95082fcc34b72682cf12311faa66b4f6ec679ff9688891b5e9f2b3b5eb3c41372742b17d6c59ea3635a2d61aceb9b3b
SSDEEP

6144:IXxZs2EcxJ8GD96ySzTVaFRFX53ncNnUUMMMMMMMMb5:IXzuKJ8GD96ySzTcANnQMMMMMMMb

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

Processes:

svchost.exe

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\SysWOW64\ovkiehll = "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

Processes:

netsh.exe

pid	Process
2464	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\ovkiehll\ImagePath = "C:\\Windows\\SysWOW64\\ovkiehll\\zykglvfs.exe"	svchost.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid	Process
1320	svchost.exe

Executes dropped EXE 1 IoCs

Processes:

zykglvfs.exe

pid	Process
3036	zykglvfs.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

zykglvfs.exe

description	pid	Process	procid_target
PID 3036 set thread context of 1320	3036	zykglvfs.exe	44

Launches sc.exe 3 IoCs

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

Processes:

sc.exesc.exesc.exe

pid	Process
2352	sc.exe
576	sc.exe
2848	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

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

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:

cmd.exesc.exe2024-11-28_fedd828163ace0def6fe0de3eeeb1efe_karagany_mafia.execmd.exesc.exesc.exenetsh.exezykglvfs.exesvchost.exe

description	ioc	Process
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	2024-11-28_fedd828163ace0def6fe0de3eeeb1efe_karagany_mafia.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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	zykglvfs.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

2024-11-28_fedd828163ace0def6fe0de3eeeb1efe_karagany_mafia.exezykglvfs.exe

description	pid	Process	procid_target
PID 1736 wrote to memory of 2336	1736	2024-11-28_fedd828163ace0def6fe0de3eeeb1efe_karagany_mafia.exe	30
PID 1736 wrote to memory of 2336	1736	2024-11-28_fedd828163ace0def6fe0de3eeeb1efe_karagany_mafia.exe	30
PID 1736 wrote to memory of 2336	1736	2024-11-28_fedd828163ace0def6fe0de3eeeb1efe_karagany_mafia.exe	30
PID 1736 wrote to memory of 2336	1736	2024-11-28_fedd828163ace0def6fe0de3eeeb1efe_karagany_mafia.exe	30
PID 1736 wrote to memory of 2388	1736	2024-11-28_fedd828163ace0def6fe0de3eeeb1efe_karagany_mafia.exe	32
PID 1736 wrote to memory of 2388	1736	2024-11-28_fedd828163ace0def6fe0de3eeeb1efe_karagany_mafia.exe	32
PID 1736 wrote to memory of 2388	1736	2024-11-28_fedd828163ace0def6fe0de3eeeb1efe_karagany_mafia.exe	32
PID 1736 wrote to memory of 2388	1736	2024-11-28_fedd828163ace0def6fe0de3eeeb1efe_karagany_mafia.exe	32
PID 1736 wrote to memory of 2352	1736	2024-11-28_fedd828163ace0def6fe0de3eeeb1efe_karagany_mafia.exe	34
PID 1736 wrote to memory of 2352	1736	2024-11-28_fedd828163ace0def6fe0de3eeeb1efe_karagany_mafia.exe	34
PID 1736 wrote to memory of 2352	1736	2024-11-28_fedd828163ace0def6fe0de3eeeb1efe_karagany_mafia.exe	34
PID 1736 wrote to memory of 2352	1736	2024-11-28_fedd828163ace0def6fe0de3eeeb1efe_karagany_mafia.exe	34
PID 1736 wrote to memory of 576	1736	2024-11-28_fedd828163ace0def6fe0de3eeeb1efe_karagany_mafia.exe	36
PID 1736 wrote to memory of 576	1736	2024-11-28_fedd828163ace0def6fe0de3eeeb1efe_karagany_mafia.exe	36
PID 1736 wrote to memory of 576	1736	2024-11-28_fedd828163ace0def6fe0de3eeeb1efe_karagany_mafia.exe	36
PID 1736 wrote to memory of 576	1736	2024-11-28_fedd828163ace0def6fe0de3eeeb1efe_karagany_mafia.exe	36
PID 1736 wrote to memory of 2848	1736	2024-11-28_fedd828163ace0def6fe0de3eeeb1efe_karagany_mafia.exe	38
PID 1736 wrote to memory of 2848	1736	2024-11-28_fedd828163ace0def6fe0de3eeeb1efe_karagany_mafia.exe	38
PID 1736 wrote to memory of 2848	1736	2024-11-28_fedd828163ace0def6fe0de3eeeb1efe_karagany_mafia.exe	38
PID 1736 wrote to memory of 2848	1736	2024-11-28_fedd828163ace0def6fe0de3eeeb1efe_karagany_mafia.exe	38
PID 1736 wrote to memory of 2464	1736	2024-11-28_fedd828163ace0def6fe0de3eeeb1efe_karagany_mafia.exe	41
PID 1736 wrote to memory of 2464	1736	2024-11-28_fedd828163ace0def6fe0de3eeeb1efe_karagany_mafia.exe	41
PID 1736 wrote to memory of 2464	1736	2024-11-28_fedd828163ace0def6fe0de3eeeb1efe_karagany_mafia.exe	41
PID 1736 wrote to memory of 2464	1736	2024-11-28_fedd828163ace0def6fe0de3eeeb1efe_karagany_mafia.exe	41
PID 3036 wrote to memory of 1320	3036	zykglvfs.exe	44
PID 3036 wrote to memory of 1320	3036	zykglvfs.exe	44
PID 3036 wrote to memory of 1320	3036	zykglvfs.exe	44
PID 3036 wrote to memory of 1320	3036	zykglvfs.exe	44
PID 3036 wrote to memory of 1320	3036	zykglvfs.exe	44
PID 3036 wrote to memory of 1320	3036	zykglvfs.exe	44

C:\Users\Admin\AppData\Local\Temp\2024-11-28_fedd828163ace0def6fe0de3eeeb1efe_karagany_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2024-11-28_fedd828163ace0def6fe0de3eeeb1efe_karagany_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1736
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ovkiehll\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2336
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\zykglvfs.exe" C:\Windows\SysWOW64\ovkiehll\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2388
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create ovkiehll binPath= "C:\Windows\SysWOW64\ovkiehll\zykglvfs.exe /d\"C:\Users\Admin\AppData\Local\Temp\2024-11-28_fedd828163ace0def6fe0de3eeeb1efe_karagany_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2352
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description ovkiehll "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:576
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start ovkiehll
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2848
- 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:2464

C:\Windows\SysWOW64\ovkiehll\zykglvfs.exe
C:\Windows\SysWOW64\ovkiehll\zykglvfs.exe /d"C:\Users\Admin\AppData\Local\Temp\2024-11-28_fedd828163ace0def6fe0de3eeeb1efe_karagany_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3036
- 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:1320

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

Replay Monitor

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Downloads

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

Filesize
10.0MB

MD5
610598d65466025646d2df2447fd0824

SHA1
fc2c73b0a36fe6bb551c4ed416c56ef96eef09fd

SHA256
464e217b9b61af5e985cd462e7fbf267a61a3c6b04261a4b5f2eace85c2fcbc0

SHA512
0e86992258caf37ae4a84b5271aee25b5587cdf44d734f2823920be416bbfe5cc18ed655c7504a64a346dba2879e4453f6b4eb23d1a167ecc1e07c39c5deb040

Download Submit
memory/1320-14-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/1320-18-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/1320-11-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/1320-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1320-17-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/1736-7-0x0000000000400000-0x0000000000483000-memory.dmp

Filesize
524KB

Download
memory/1736-1-0x0000000000550000-0x0000000000650000-memory.dmp

Filesize
1024KB

Download
memory/1736-8-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1736-9-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/1736-2-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/1736-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3036-16-0x0000000000400000-0x0000000000483000-memory.dmp

Filesize
524KB

Download