tofsee | fb47837ab6258ecec5ee4c3bc7a193f026ce1a39ca6b490cc8990b36e7d3e802

General

Target

JaffaCakes118_fb47837ab6258ecec5ee4c3bc7a193f026ce1a39ca6b490cc8990b36e7d3e802.exe
Size

13.2MB
MD5

d76e05043d64bf66c8b6a43f3bb0c3a6
SHA1

aa49363192ed4193bca7288208309fcecdccf96d
SHA256

fb47837ab6258ecec5ee4c3bc7a193f026ce1a39ca6b490cc8990b36e7d3e802
SHA512

0e9064934779bafce379484d8c00c538c1e61a030f0dce913b4d6e46b40d9e22ce30a43e9764fe5db32c64f9d5a61827ea8047555dd74a6f8f442a77fb2e52fc
SSDEEP

49152:W0Qlolqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqa:W0Qy

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
3016	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\xmzvofin\ImagePath = "C:\\Windows\\SysWOW64\\xmzvofin\\iuthscke.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-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation	JaffaCakes118_fb47837ab6258ecec5ee4c3bc7a193f026ce1a39ca6b490cc8990b36e7d3e802.exe

Deletes itself 1 IoCs

pid	Process
1608	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2288	iuthscke.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2288 set thread context of 1608	2288	iuthscke.exe	98

Launches sc.exe 3 IoCs

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

pid	Process
860	sc.exe
2156	sc.exe
3528	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

Program crash 2 IoCs

pid	pid_target	Process	procid_target
5060	968	WerFault.exe	81
1792	2288	WerFault.exe	92

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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	iuthscke.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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_fb47837ab6258ecec5ee4c3bc7a193f026ce1a39ca6b490cc8990b36e7d3e802.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 968 wrote to memory of 3464	968	JaffaCakes118_fb47837ab6258ecec5ee4c3bc7a193f026ce1a39ca6b490cc8990b36e7d3e802.exe	82
PID 968 wrote to memory of 3464	968	JaffaCakes118_fb47837ab6258ecec5ee4c3bc7a193f026ce1a39ca6b490cc8990b36e7d3e802.exe	82
PID 968 wrote to memory of 3464	968	JaffaCakes118_fb47837ab6258ecec5ee4c3bc7a193f026ce1a39ca6b490cc8990b36e7d3e802.exe	82
PID 968 wrote to memory of 4892	968	JaffaCakes118_fb47837ab6258ecec5ee4c3bc7a193f026ce1a39ca6b490cc8990b36e7d3e802.exe	84
PID 968 wrote to memory of 4892	968	JaffaCakes118_fb47837ab6258ecec5ee4c3bc7a193f026ce1a39ca6b490cc8990b36e7d3e802.exe	84
PID 968 wrote to memory of 4892	968	JaffaCakes118_fb47837ab6258ecec5ee4c3bc7a193f026ce1a39ca6b490cc8990b36e7d3e802.exe	84
PID 968 wrote to memory of 3528	968	JaffaCakes118_fb47837ab6258ecec5ee4c3bc7a193f026ce1a39ca6b490cc8990b36e7d3e802.exe	86
PID 968 wrote to memory of 3528	968	JaffaCakes118_fb47837ab6258ecec5ee4c3bc7a193f026ce1a39ca6b490cc8990b36e7d3e802.exe	86
PID 968 wrote to memory of 3528	968	JaffaCakes118_fb47837ab6258ecec5ee4c3bc7a193f026ce1a39ca6b490cc8990b36e7d3e802.exe	86
PID 968 wrote to memory of 860	968	JaffaCakes118_fb47837ab6258ecec5ee4c3bc7a193f026ce1a39ca6b490cc8990b36e7d3e802.exe	88
PID 968 wrote to memory of 860	968	JaffaCakes118_fb47837ab6258ecec5ee4c3bc7a193f026ce1a39ca6b490cc8990b36e7d3e802.exe	88
PID 968 wrote to memory of 860	968	JaffaCakes118_fb47837ab6258ecec5ee4c3bc7a193f026ce1a39ca6b490cc8990b36e7d3e802.exe	88
PID 968 wrote to memory of 2156	968	JaffaCakes118_fb47837ab6258ecec5ee4c3bc7a193f026ce1a39ca6b490cc8990b36e7d3e802.exe	90
PID 968 wrote to memory of 2156	968	JaffaCakes118_fb47837ab6258ecec5ee4c3bc7a193f026ce1a39ca6b490cc8990b36e7d3e802.exe	90
PID 968 wrote to memory of 2156	968	JaffaCakes118_fb47837ab6258ecec5ee4c3bc7a193f026ce1a39ca6b490cc8990b36e7d3e802.exe	90
PID 968 wrote to memory of 3016	968	JaffaCakes118_fb47837ab6258ecec5ee4c3bc7a193f026ce1a39ca6b490cc8990b36e7d3e802.exe	93
PID 968 wrote to memory of 3016	968	JaffaCakes118_fb47837ab6258ecec5ee4c3bc7a193f026ce1a39ca6b490cc8990b36e7d3e802.exe	93
PID 968 wrote to memory of 3016	968	JaffaCakes118_fb47837ab6258ecec5ee4c3bc7a193f026ce1a39ca6b490cc8990b36e7d3e802.exe	93
PID 2288 wrote to memory of 1608	2288	iuthscke.exe	98
PID 2288 wrote to memory of 1608	2288	iuthscke.exe	98
PID 2288 wrote to memory of 1608	2288	iuthscke.exe	98
PID 2288 wrote to memory of 1608	2288	iuthscke.exe	98
PID 2288 wrote to memory of 1608	2288	iuthscke.exe	98

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_fb47837ab6258ecec5ee4c3bc7a193f026ce1a39ca6b490cc8990b36e7d3e802.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_fb47837ab6258ecec5ee4c3bc7a193f026ce1a39ca6b490cc8990b36e7d3e802.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:968
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\xmzvofin\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3464
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\iuthscke.exe" C:\Windows\SysWOW64\xmzvofin\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4892
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create xmzvofin binPath= "C:\Windows\SysWOW64\xmzvofin\iuthscke.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_fb47837ab6258ecec5ee4c3bc7a193f026ce1a39ca6b490cc8990b36e7d3e802.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3528
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description xmzvofin "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:860
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start xmzvofin
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2156
- 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:3016
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 968 -s 1028
  2⤵
  - Program crash
  PID:5060

C:\Windows\SysWOW64\xmzvofin\iuthscke.exe
C:\Windows\SysWOW64\xmzvofin\iuthscke.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_fb47837ab6258ecec5ee4c3bc7a193f026ce1a39ca6b490cc8990b36e7d3e802.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2288
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1608
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2288 -s 512
  2⤵
  - Program crash
  PID:1792

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 968 -ip 968
1⤵
PID:2188

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2288 -ip 2288
1⤵
PID:4068

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\iuthscke.exe

Filesize
13.1MB

MD5
265088defa595394681c97554f96af59

SHA1
efd4153eeb0b4048a9c79b140bfb07fdd23102d8

SHA256
f55031e02f582f68add0f46ccd143e69f8ea47cda6df7761f909dcb3ad5504d1

SHA512
1907c3ff0c48b8a2ff84c99f8334815537dad49c04bfb72cc7435d6f4c32c8cc4a95f9ebcc09504a4993f2943c629e360c6496a4df36b773d0d8ab8ea97c8a89

Download Submit
memory/968-1-0x0000000002EF0000-0x0000000002FF0000-memory.dmp

Filesize
1024KB

Download
memory/968-2-0x0000000002CC0000-0x0000000002CD3000-memory.dmp

Filesize
76KB

Download
memory/968-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/968-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/968-9-0x0000000002CC0000-0x0000000002CD3000-memory.dmp

Filesize
76KB

Download
memory/968-8-0x0000000000400000-0x0000000002BA2000-memory.dmp

Filesize
39.6MB

Download
memory/1608-11-0x0000000000B30000-0x0000000000B45000-memory.dmp

Filesize
84KB

Download
memory/1608-13-0x0000000000B30000-0x0000000000B45000-memory.dmp

Filesize
84KB

Download
memory/1608-14-0x0000000000B30000-0x0000000000B45000-memory.dmp

Filesize
84KB

Download
memory/2288-15-0x0000000000400000-0x0000000002BA2000-memory.dmp

Filesize
39.6MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads