tofsee | dce5b9da95d9d01aa4be5091d9cdcc52456d04f5e52385b79bc7887410eeea7e

General

Target

2024-11-03_7805744de467df9742263b9b6bad88db_mafia.exe
Size

13.2MB
MD5

7805744de467df9742263b9b6bad88db
SHA1

f65a57962202de0ab0264ea1c5d5193a2f4bd349
SHA256

dce5b9da95d9d01aa4be5091d9cdcc52456d04f5e52385b79bc7887410eeea7e
SHA512

b15550cc947017eec88d2fb8ad96fed34f48fd998dca4c7f5efbc789889aefb78264908e054a35b63d47d9c3e6eb2eee2fb7e9e41bf7fb5c5af20f0a9d84298e
SSDEEP

196608:H3aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa+:H

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

pid	Process
2392	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\zlwnnpfs\ImagePath = "C:\\Windows\\SysWOW64\\zlwnnpfs\\gfrnscmz.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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	2024-11-03_7805744de467df9742263b9b6bad88db_mafia.exe

Deletes itself 1 IoCs

pid	Process
4764	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4760	gfrnscmz.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4760 set thread context of 4764	4760	gfrnscmz.exe	103

Launches sc.exe 3 IoCs

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

pid	Process
3648	sc.exe
1140	sc.exe
2440	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	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	gfrnscmz.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-11-03_7805744de467df9742263b9b6bad88db_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	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3036 wrote to memory of 828	3036	2024-11-03_7805744de467df9742263b9b6bad88db_mafia.exe	87
PID 3036 wrote to memory of 828	3036	2024-11-03_7805744de467df9742263b9b6bad88db_mafia.exe	87
PID 3036 wrote to memory of 828	3036	2024-11-03_7805744de467df9742263b9b6bad88db_mafia.exe	87
PID 3036 wrote to memory of 1676	3036	2024-11-03_7805744de467df9742263b9b6bad88db_mafia.exe	89
PID 3036 wrote to memory of 1676	3036	2024-11-03_7805744de467df9742263b9b6bad88db_mafia.exe	89
PID 3036 wrote to memory of 1676	3036	2024-11-03_7805744de467df9742263b9b6bad88db_mafia.exe	89
PID 3036 wrote to memory of 3648	3036	2024-11-03_7805744de467df9742263b9b6bad88db_mafia.exe	91
PID 3036 wrote to memory of 3648	3036	2024-11-03_7805744de467df9742263b9b6bad88db_mafia.exe	91
PID 3036 wrote to memory of 3648	3036	2024-11-03_7805744de467df9742263b9b6bad88db_mafia.exe	91
PID 3036 wrote to memory of 1140	3036	2024-11-03_7805744de467df9742263b9b6bad88db_mafia.exe	93
PID 3036 wrote to memory of 1140	3036	2024-11-03_7805744de467df9742263b9b6bad88db_mafia.exe	93
PID 3036 wrote to memory of 1140	3036	2024-11-03_7805744de467df9742263b9b6bad88db_mafia.exe	93
PID 3036 wrote to memory of 2440	3036	2024-11-03_7805744de467df9742263b9b6bad88db_mafia.exe	97
PID 3036 wrote to memory of 2440	3036	2024-11-03_7805744de467df9742263b9b6bad88db_mafia.exe	97
PID 3036 wrote to memory of 2440	3036	2024-11-03_7805744de467df9742263b9b6bad88db_mafia.exe	97
PID 3036 wrote to memory of 2392	3036	2024-11-03_7805744de467df9742263b9b6bad88db_mafia.exe	100
PID 3036 wrote to memory of 2392	3036	2024-11-03_7805744de467df9742263b9b6bad88db_mafia.exe	100
PID 3036 wrote to memory of 2392	3036	2024-11-03_7805744de467df9742263b9b6bad88db_mafia.exe	100
PID 4760 wrote to memory of 4764	4760	gfrnscmz.exe	103
PID 4760 wrote to memory of 4764	4760	gfrnscmz.exe	103
PID 4760 wrote to memory of 4764	4760	gfrnscmz.exe	103
PID 4760 wrote to memory of 4764	4760	gfrnscmz.exe	103
PID 4760 wrote to memory of 4764	4760	gfrnscmz.exe	103

C:\Users\Admin\AppData\Local\Temp\2024-11-03_7805744de467df9742263b9b6bad88db_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2024-11-03_7805744de467df9742263b9b6bad88db_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3036
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\zlwnnpfs\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:828
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\gfrnscmz.exe" C:\Windows\SysWOW64\zlwnnpfs\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1676
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create zlwnnpfs binPath= "C:\Windows\SysWOW64\zlwnnpfs\gfrnscmz.exe /d\"C:\Users\Admin\AppData\Local\Temp\2024-11-03_7805744de467df9742263b9b6bad88db_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3648
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description zlwnnpfs "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1140
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start zlwnnpfs
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2440
- 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:2392

C:\Windows\SysWOW64\zlwnnpfs\gfrnscmz.exe
C:\Windows\SysWOW64\zlwnnpfs\gfrnscmz.exe /d"C:\Users\Admin\AppData\Local\Temp\2024-11-03_7805744de467df9742263b9b6bad88db_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4760
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4764

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\gfrnscmz.exe

Filesize
14.8MB

MD5
b69a02cdf8cb5a2fa6e3998cdcece91b

SHA1
7517b42aaefbaa734d2b360a10dfcf85596e377a

SHA256
0101c3631d3cbb3c936a34333499c65d5bbbd2f796031bb8520f7579d50bbc44

SHA512
cc7218ae43fd68ed86c7eef278b9b8feb386aa1e8855c968b3b125c38b5b93d6b76bf6e8b5967502d6efd1c3c8c8b8175d16f42d6b483da27068eac722ed0de2

Download Submit
memory/3036-8-0x00000000021A0000-0x00000000021B3000-memory.dmp

Filesize
76KB

Download
memory/3036-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3036-1-0x0000000000460000-0x0000000000560000-memory.dmp

Filesize
1024KB

Download
memory/3036-7-0x0000000000400000-0x0000000000459000-memory.dmp

Filesize
356KB

Download
memory/3036-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3036-2-0x00000000021A0000-0x00000000021B3000-memory.dmp

Filesize
76KB

Download
memory/4760-11-0x0000000000400000-0x0000000000459000-memory.dmp

Filesize
356KB

Download
memory/4760-12-0x0000000000400000-0x0000000000459000-memory.dmp

Filesize
356KB

Download
memory/4760-17-0x0000000000400000-0x0000000000459000-memory.dmp

Filesize
356KB

Download
memory/4764-15-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4764-13-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4764-18-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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