tofsee | acf8b2bcf6af380afd0b9f930bd707b342fde61b5fea32f79e4966a800fd7f50

General

Target

c659128a51feccbe01152e15254d507e_JaffaCakes118.exe
Size

15.0MB
MD5

c659128a51feccbe01152e15254d507e
SHA1

917d99d4552a05870e9358e0de7053b3ba3e9482
SHA256

acf8b2bcf6af380afd0b9f930bd707b342fde61b5fea32f79e4966a800fd7f50
SHA512

172a9dacb46175d56a6d480329246d8e16fd742f83efff9b5927894b2a0bc34b800dc70392ddca906e3eca184669f4874a7f9bd854871e870e50315869b15257
SSDEEP

1536:oijD738OroNKoBBDGqprbJD9RU/VHmubHMFaGkrESk8T9jKGtdvdmG:oij33broxDLVk/Nm7rSXBKGT

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
4728	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\xaoxhvrp\ImagePath = "C:\\Windows\\SysWOW64\\xaoxhvrp\\fdkgfomd.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-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	c659128a51feccbe01152e15254d507e_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
3392	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1820	fdkgfomd.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1820 set thread context of 3392	1820	fdkgfomd.exe	95

Launches sc.exe 3 IoCs

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

pid	Process
4428	sc.exe
396	sc.exe
2600	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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	c659128a51feccbe01152e15254d507e_JaffaCakes118.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	fdkgfomd.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3188 wrote to memory of 3200	3188	c659128a51feccbe01152e15254d507e_JaffaCakes118.exe	83
PID 3188 wrote to memory of 3200	3188	c659128a51feccbe01152e15254d507e_JaffaCakes118.exe	83
PID 3188 wrote to memory of 3200	3188	c659128a51feccbe01152e15254d507e_JaffaCakes118.exe	83
PID 3188 wrote to memory of 3348	3188	c659128a51feccbe01152e15254d507e_JaffaCakes118.exe	85
PID 3188 wrote to memory of 3348	3188	c659128a51feccbe01152e15254d507e_JaffaCakes118.exe	85
PID 3188 wrote to memory of 3348	3188	c659128a51feccbe01152e15254d507e_JaffaCakes118.exe	85
PID 3188 wrote to memory of 4428	3188	c659128a51feccbe01152e15254d507e_JaffaCakes118.exe	87
PID 3188 wrote to memory of 4428	3188	c659128a51feccbe01152e15254d507e_JaffaCakes118.exe	87
PID 3188 wrote to memory of 4428	3188	c659128a51feccbe01152e15254d507e_JaffaCakes118.exe	87
PID 3188 wrote to memory of 396	3188	c659128a51feccbe01152e15254d507e_JaffaCakes118.exe	89
PID 3188 wrote to memory of 396	3188	c659128a51feccbe01152e15254d507e_JaffaCakes118.exe	89
PID 3188 wrote to memory of 396	3188	c659128a51feccbe01152e15254d507e_JaffaCakes118.exe	89
PID 3188 wrote to memory of 2600	3188	c659128a51feccbe01152e15254d507e_JaffaCakes118.exe	91
PID 3188 wrote to memory of 2600	3188	c659128a51feccbe01152e15254d507e_JaffaCakes118.exe	91
PID 3188 wrote to memory of 2600	3188	c659128a51feccbe01152e15254d507e_JaffaCakes118.exe	91
PID 1820 wrote to memory of 3392	1820	fdkgfomd.exe	95
PID 1820 wrote to memory of 3392	1820	fdkgfomd.exe	95
PID 1820 wrote to memory of 3392	1820	fdkgfomd.exe	95
PID 1820 wrote to memory of 3392	1820	fdkgfomd.exe	95
PID 1820 wrote to memory of 3392	1820	fdkgfomd.exe	95
PID 3188 wrote to memory of 4728	3188	c659128a51feccbe01152e15254d507e_JaffaCakes118.exe	96
PID 3188 wrote to memory of 4728	3188	c659128a51feccbe01152e15254d507e_JaffaCakes118.exe	96
PID 3188 wrote to memory of 4728	3188	c659128a51feccbe01152e15254d507e_JaffaCakes118.exe	96

C:\Users\Admin\AppData\Local\Temp\c659128a51feccbe01152e15254d507e_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\c659128a51feccbe01152e15254d507e_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3188
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\xaoxhvrp\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3200
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\fdkgfomd.exe" C:\Windows\SysWOW64\xaoxhvrp\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3348
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create xaoxhvrp binPath= "C:\Windows\SysWOW64\xaoxhvrp\fdkgfomd.exe /d\"C:\Users\Admin\AppData\Local\Temp\c659128a51feccbe01152e15254d507e_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4428
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description xaoxhvrp "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:396
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start xaoxhvrp
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2600
- 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:4728

C:\Windows\SysWOW64\xaoxhvrp\fdkgfomd.exe
C:\Windows\SysWOW64\xaoxhvrp\fdkgfomd.exe /d"C:\Users\Admin\AppData\Local\Temp\c659128a51feccbe01152e15254d507e_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1820
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3392

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\fdkgfomd.exe

Filesize
13.6MB

MD5
0e5dca6660f538a362a1908b763e1830

SHA1
8b95b0ec9ce9976368849cf0ad3b1b7a738472de

SHA256
f45bce97a98fed46271805fea006c5654752952c2d898a72e053288569080ea8

SHA512
1abb990c570a3ab29ef675e9f105cf3d90a90669b231bb9673499662769ab3679e396eeb3d50c75e0b3fc71873ddcedef412c7524fab55c99c95ef9a6eb7ef5d

Download Submit
memory/1820-6-0x00000000005A0000-0x00000000005A1000-memory.dmp

Filesize
4KB

Download
memory/1820-9-0x0000000000400000-0x000000000041D000-memory.dmp

Filesize
116KB

Download
memory/3188-0-0x0000000002160000-0x0000000002161000-memory.dmp

Filesize
4KB

Download
memory/3188-1-0x0000000002180000-0x0000000002181000-memory.dmp

Filesize
4KB

Download
memory/3188-2-0x0000000000400000-0x000000000041D000-memory.dmp

Filesize
116KB

Download
memory/3188-13-0x0000000000400000-0x000000000041D000-memory.dmp

Filesize
116KB

Download
memory/3392-8-0x0000000000F00000-0x0000000000F15000-memory.dmp

Filesize
84KB

Download
memory/3392-12-0x0000000000F00000-0x0000000000F15000-memory.dmp

Filesize
84KB

Download
memory/3392-14-0x0000000000F00000-0x0000000000F15000-memory.dmp

Filesize
84KB

Download
memory/3392-15-0x0000000000F00000-0x0000000000F15000-memory.dmp

Filesize
84KB

Download
memory/3392-16-0x0000000000F00000-0x0000000000F15000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads