tofsee | 2edc2f82a1b10e3d2439c10ac90e8fb2a170840524cb5b04ef96b7ec4a7774d8

Analysis

max time kernel
146s
max time network
123s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
07-12-2024 18:27

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General

Target

2024-12-07_5142ee56e615a7f396f56d97f28d87ef_karagany_mafia.exe
Size

15.0MB
MD5

5142ee56e615a7f396f56d97f28d87ef
SHA1

359af34bdc8073a6326d96208cb629a9120ccb3e
SHA256

2edc2f82a1b10e3d2439c10ac90e8fb2a170840524cb5b04ef96b7ec4a7774d8
SHA512

1d3e92fb559c4c25d878e94a882fb20d6dc683c647d51d51d49ebf9e1d0b1a68e1a191360f296fa32a35ed3e03524eb27281f854fa36d345d9d965e9c280bb73
SSDEEP

6144:RXxZveEydmxZnXNMRaTuMUifWLKxNMMMMMMMbgb:RXzvvygxZnXxr+mxNMMMMMMMbg

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\aaybwiox = "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
2888	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\aaybwiox\ImagePath = "C:\\Windows\\SysWOW64\\aaybwiox\\vrlrxzri.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2976	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2764	vrlrxzri.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2764 set thread context of 2976	2764	vrlrxzri.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
2256	sc.exe
1832	sc.exe
2896	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 value enumerated	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key queried	\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	2024-12-07_5142ee56e615a7f396f56d97f28d87ef_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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vrlrxzri.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2516 wrote to memory of 656	2516	2024-12-07_5142ee56e615a7f396f56d97f28d87ef_karagany_mafia.exe	30
PID 2516 wrote to memory of 656	2516	2024-12-07_5142ee56e615a7f396f56d97f28d87ef_karagany_mafia.exe	30
PID 2516 wrote to memory of 656	2516	2024-12-07_5142ee56e615a7f396f56d97f28d87ef_karagany_mafia.exe	30
PID 2516 wrote to memory of 656	2516	2024-12-07_5142ee56e615a7f396f56d97f28d87ef_karagany_mafia.exe	30
PID 2516 wrote to memory of 2924	2516	2024-12-07_5142ee56e615a7f396f56d97f28d87ef_karagany_mafia.exe	32
PID 2516 wrote to memory of 2924	2516	2024-12-07_5142ee56e615a7f396f56d97f28d87ef_karagany_mafia.exe	32
PID 2516 wrote to memory of 2924	2516	2024-12-07_5142ee56e615a7f396f56d97f28d87ef_karagany_mafia.exe	32
PID 2516 wrote to memory of 2924	2516	2024-12-07_5142ee56e615a7f396f56d97f28d87ef_karagany_mafia.exe	32
PID 2516 wrote to memory of 2256	2516	2024-12-07_5142ee56e615a7f396f56d97f28d87ef_karagany_mafia.exe	34
PID 2516 wrote to memory of 2256	2516	2024-12-07_5142ee56e615a7f396f56d97f28d87ef_karagany_mafia.exe	34
PID 2516 wrote to memory of 2256	2516	2024-12-07_5142ee56e615a7f396f56d97f28d87ef_karagany_mafia.exe	34
PID 2516 wrote to memory of 2256	2516	2024-12-07_5142ee56e615a7f396f56d97f28d87ef_karagany_mafia.exe	34
PID 2516 wrote to memory of 1832	2516	2024-12-07_5142ee56e615a7f396f56d97f28d87ef_karagany_mafia.exe	36
PID 2516 wrote to memory of 1832	2516	2024-12-07_5142ee56e615a7f396f56d97f28d87ef_karagany_mafia.exe	36
PID 2516 wrote to memory of 1832	2516	2024-12-07_5142ee56e615a7f396f56d97f28d87ef_karagany_mafia.exe	36
PID 2516 wrote to memory of 1832	2516	2024-12-07_5142ee56e615a7f396f56d97f28d87ef_karagany_mafia.exe	36
PID 2516 wrote to memory of 2896	2516	2024-12-07_5142ee56e615a7f396f56d97f28d87ef_karagany_mafia.exe	38
PID 2516 wrote to memory of 2896	2516	2024-12-07_5142ee56e615a7f396f56d97f28d87ef_karagany_mafia.exe	38
PID 2516 wrote to memory of 2896	2516	2024-12-07_5142ee56e615a7f396f56d97f28d87ef_karagany_mafia.exe	38
PID 2516 wrote to memory of 2896	2516	2024-12-07_5142ee56e615a7f396f56d97f28d87ef_karagany_mafia.exe	38
PID 2516 wrote to memory of 2888	2516	2024-12-07_5142ee56e615a7f396f56d97f28d87ef_karagany_mafia.exe	41
PID 2516 wrote to memory of 2888	2516	2024-12-07_5142ee56e615a7f396f56d97f28d87ef_karagany_mafia.exe	41
PID 2516 wrote to memory of 2888	2516	2024-12-07_5142ee56e615a7f396f56d97f28d87ef_karagany_mafia.exe	41
PID 2516 wrote to memory of 2888	2516	2024-12-07_5142ee56e615a7f396f56d97f28d87ef_karagany_mafia.exe	41
PID 2764 wrote to memory of 2976	2764	vrlrxzri.exe	43
PID 2764 wrote to memory of 2976	2764	vrlrxzri.exe	43
PID 2764 wrote to memory of 2976	2764	vrlrxzri.exe	43
PID 2764 wrote to memory of 2976	2764	vrlrxzri.exe	43
PID 2764 wrote to memory of 2976	2764	vrlrxzri.exe	43
PID 2764 wrote to memory of 2976	2764	vrlrxzri.exe	43

C:\Users\Admin\AppData\Local\Temp\2024-12-07_5142ee56e615a7f396f56d97f28d87ef_karagany_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2024-12-07_5142ee56e615a7f396f56d97f28d87ef_karagany_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2516
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\aaybwiox\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:656
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\vrlrxzri.exe" C:\Windows\SysWOW64\aaybwiox\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2924
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create aaybwiox binPath= "C:\Windows\SysWOW64\aaybwiox\vrlrxzri.exe /d\"C:\Users\Admin\AppData\Local\Temp\2024-12-07_5142ee56e615a7f396f56d97f28d87ef_karagany_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2256
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description aaybwiox "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1832
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start aaybwiox
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2896
- 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:2888

C:\Windows\SysWOW64\aaybwiox\vrlrxzri.exe
C:\Windows\SysWOW64\aaybwiox\vrlrxzri.exe /d"C:\Users\Admin\AppData\Local\Temp\2024-12-07_5142ee56e615a7f396f56d97f28d87ef_karagany_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2764
- 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:2976

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\vrlrxzri.exe

Filesize
14.2MB

MD5
cac065c8785d833cc7b3cfabf07f91d3

SHA1
9e8f33fcc17be9f8bdee172bc0116a9671bfc015

SHA256
8a779ad7bb9a2134d14951bf3730e7773ba6d0ff75bd121d5da2fcc42b607e33

SHA512
0f0c8307273feafc133090bfde84cc6533a52cc4fc4be7ee5b6b907e57ec6cd2ff34aae0bac9d31a8cf90ecedd6c8550d65f4c57622b59815d4d375de3b68ef5

Download Submit
memory/2516-1-0x0000000000630000-0x0000000000730000-memory.dmp

Filesize
1024KB

Download
memory/2516-3-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/2516-2-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2516-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2516-8-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/2764-17-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/2976-14-0x0000000000090000-0x00000000000A5000-memory.dmp

Filesize
84KB

Download
memory/2976-16-0x0000000000090000-0x00000000000A5000-memory.dmp

Filesize
84KB

Download
memory/2976-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2976-11-0x0000000000090000-0x00000000000A5000-memory.dmp

Filesize
84KB

Download
memory/2976-18-0x0000000000090000-0x00000000000A5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads