tofsee | 387aed56da6bf8cc2a2be6be910747e14380408689ef011227b4bec12fb1ecb2

General

Target

d7bce7dc29f9c05fba85e2922583c0cd_JaffaCakes118.exe
Size

114KB
MD5

d7bce7dc29f9c05fba85e2922583c0cd
SHA1

95a82ccfdad81f093dd63a4e64b6449ec518db23
SHA256

387aed56da6bf8cc2a2be6be910747e14380408689ef011227b4bec12fb1ecb2
SHA512

21a51f566b342fb41a38b8f1aa4ab081159ee51ee7fe6bdea6c4d93ca8c374509e3db35ff2c5d0641d6e5202a70a4dc4c8045585d3f0a4f31a3d497d148bca8a
SSDEEP

3072:oYltF2ixWmZLprvw5EL0WHRVUlvw3ypP5:dltwKDvwEZxilvn

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
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
4444	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\lwjwqai\ImagePath = "C:\\Windows\\SysWOW64\\lwjwqai\\amnhcyzw.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-1-5-21-1194130065-3471212556-1656947724-1000\Control Panel\International\Geo\Nation	d7bce7dc29f9c05fba85e2922583c0cd_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
4708	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2780	amnhcyzw.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2780 set thread context of 4708	2780	amnhcyzw.exe	98

Launches sc.exe 3 IoCs

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

pid	Process
4668	sc.exe
1800	sc.exe
4040	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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	amnhcyzw.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	d7bce7dc29f9c05fba85e2922583c0cd_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe

Enumerates system info in registry 2 TTPs 2 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	amnhcyzw.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	d7bce7dc29f9c05fba85e2922583c0cd_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4696 wrote to memory of 220	4696	d7bce7dc29f9c05fba85e2922583c0cd_JaffaCakes118.exe	85
PID 4696 wrote to memory of 220	4696	d7bce7dc29f9c05fba85e2922583c0cd_JaffaCakes118.exe	85
PID 4696 wrote to memory of 220	4696	d7bce7dc29f9c05fba85e2922583c0cd_JaffaCakes118.exe	85
PID 4696 wrote to memory of 3264	4696	d7bce7dc29f9c05fba85e2922583c0cd_JaffaCakes118.exe	88
PID 4696 wrote to memory of 3264	4696	d7bce7dc29f9c05fba85e2922583c0cd_JaffaCakes118.exe	88
PID 4696 wrote to memory of 3264	4696	d7bce7dc29f9c05fba85e2922583c0cd_JaffaCakes118.exe	88
PID 4696 wrote to memory of 1800	4696	d7bce7dc29f9c05fba85e2922583c0cd_JaffaCakes118.exe	90
PID 4696 wrote to memory of 1800	4696	d7bce7dc29f9c05fba85e2922583c0cd_JaffaCakes118.exe	90
PID 4696 wrote to memory of 1800	4696	d7bce7dc29f9c05fba85e2922583c0cd_JaffaCakes118.exe	90
PID 4696 wrote to memory of 4040	4696	d7bce7dc29f9c05fba85e2922583c0cd_JaffaCakes118.exe	92
PID 4696 wrote to memory of 4040	4696	d7bce7dc29f9c05fba85e2922583c0cd_JaffaCakes118.exe	92
PID 4696 wrote to memory of 4040	4696	d7bce7dc29f9c05fba85e2922583c0cd_JaffaCakes118.exe	92
PID 4696 wrote to memory of 4668	4696	d7bce7dc29f9c05fba85e2922583c0cd_JaffaCakes118.exe	95
PID 4696 wrote to memory of 4668	4696	d7bce7dc29f9c05fba85e2922583c0cd_JaffaCakes118.exe	95
PID 4696 wrote to memory of 4668	4696	d7bce7dc29f9c05fba85e2922583c0cd_JaffaCakes118.exe	95
PID 2780 wrote to memory of 4708	2780	amnhcyzw.exe	98
PID 2780 wrote to memory of 4708	2780	amnhcyzw.exe	98
PID 2780 wrote to memory of 4708	2780	amnhcyzw.exe	98
PID 2780 wrote to memory of 4708	2780	amnhcyzw.exe	98
PID 2780 wrote to memory of 4708	2780	amnhcyzw.exe	98
PID 4696 wrote to memory of 4444	4696	d7bce7dc29f9c05fba85e2922583c0cd_JaffaCakes118.exe	99
PID 4696 wrote to memory of 4444	4696	d7bce7dc29f9c05fba85e2922583c0cd_JaffaCakes118.exe	99
PID 4696 wrote to memory of 4444	4696	d7bce7dc29f9c05fba85e2922583c0cd_JaffaCakes118.exe	99

C:\Users\Admin\AppData\Local\Temp\d7bce7dc29f9c05fba85e2922583c0cd_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\d7bce7dc29f9c05fba85e2922583c0cd_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Enumerates system info in registry
- Suspicious use of WriteProcessMemory
PID:4696
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\lwjwqai\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:220
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\amnhcyzw.exe" C:\Windows\SysWOW64\lwjwqai\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3264
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create lwjwqai binPath= "C:\Windows\SysWOW64\lwjwqai\amnhcyzw.exe /d\"C:\Users\Admin\AppData\Local\Temp\d7bce7dc29f9c05fba85e2922583c0cd_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1800
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description lwjwqai "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4040
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start lwjwqai
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4668
- 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:4444

C:\Windows\SysWOW64\lwjwqai\amnhcyzw.exe
C:\Windows\SysWOW64\lwjwqai\amnhcyzw.exe /d"C:\Users\Admin\AppData\Local\Temp\d7bce7dc29f9c05fba85e2922583c0cd_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Enumerates system info in registry
- Suspicious use of WriteProcessMemory
PID:2780
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4708

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

2

T1012

System Information Discovery

3

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\amnhcyzw.exe

Filesize
11.1MB

MD5
9d258647c6fcc5d680770b9fb05e46b7

SHA1
6c18b39cf4b28d2a2f13283af7b015919596e32e

SHA256
025fdc07d0e638de172c7a136bd1e88ba6233c47fca2b3cad6221251da8abe64

SHA512
ee4c1619fc30b5c09eb2caab9a397f8d84b842998460ed6a2ff016c7ee6dc7032c34af268632d3d5824a79ba1e3b1fe7b1bd1c650006c9c3c88434b93be32aa3

Download Submit
memory/2780-6-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2780-11-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/4696-1-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/4696-2-0x00000000005F0000-0x00000000005F1000-memory.dmp

Filesize
4KB

Download
memory/4696-0-0x00000000005E0000-0x00000000005E1000-memory.dmp

Filesize
4KB

Download
memory/4696-12-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/4708-7-0x0000000000920000-0x0000000000935000-memory.dmp

Filesize
84KB

Download
memory/4708-10-0x0000000000920000-0x0000000000935000-memory.dmp

Filesize
84KB

Download
memory/4708-13-0x0000000000920000-0x0000000000935000-memory.dmp

Filesize
84KB

Download
memory/4708-14-0x0000000000920000-0x0000000000935000-memory.dmp

Filesize
84KB

Download
memory/4708-15-0x0000000000920000-0x0000000000935000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads