tofsee | 8dada8550c69139e50dcdf23aac63902b63fc35e4092ad10aa125dad7833b245

General

Target

a7b5afb958e1f5a5aa8a89fcffd4e2bb_JaffaCakes118.exe
Size

11.0MB
MD5

a7b5afb958e1f5a5aa8a89fcffd4e2bb
SHA1

a581eaa933ebd023e48f9633257a1099e0085bdf
SHA256

8dada8550c69139e50dcdf23aac63902b63fc35e4092ad10aa125dad7833b245
SHA512

a20f40a6c1794eb4736956ecc62d69ff279aad472f229147b983f666c21a84ff9561e4b790b221d9a80a0dfc586d11a767ad68e68cff3305d346ec0da5a8d64d
SSDEEP

196608:SkNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNd:S

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

defeatwax.ru

refabyd.info

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
4260	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\oampotrk\ImagePath = "C:\\Windows\\SysWOW64\\oampotrk\\xshrwbtr.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	a7b5afb958e1f5a5aa8a89fcffd4e2bb_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
2968	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4672	xshrwbtr.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4672 set thread context of 2968	4672	xshrwbtr.exe	110

Launches sc.exe 3 IoCs

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

pid	Process
1320	sc.exe
1912	sc.exe
2288	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
4368	4188	WerFault.exe	84
4408	4672	WerFault.exe	98

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	xshrwbtr.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	a7b5afb958e1f5a5aa8a89fcffd4e2bb_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4188 wrote to memory of 1720	4188	a7b5afb958e1f5a5aa8a89fcffd4e2bb_JaffaCakes118.exe	85
PID 4188 wrote to memory of 1720	4188	a7b5afb958e1f5a5aa8a89fcffd4e2bb_JaffaCakes118.exe	85
PID 4188 wrote to memory of 1720	4188	a7b5afb958e1f5a5aa8a89fcffd4e2bb_JaffaCakes118.exe	85
PID 4188 wrote to memory of 1084	4188	a7b5afb958e1f5a5aa8a89fcffd4e2bb_JaffaCakes118.exe	87
PID 4188 wrote to memory of 1084	4188	a7b5afb958e1f5a5aa8a89fcffd4e2bb_JaffaCakes118.exe	87
PID 4188 wrote to memory of 1084	4188	a7b5afb958e1f5a5aa8a89fcffd4e2bb_JaffaCakes118.exe	87
PID 4188 wrote to memory of 2288	4188	a7b5afb958e1f5a5aa8a89fcffd4e2bb_JaffaCakes118.exe	89
PID 4188 wrote to memory of 2288	4188	a7b5afb958e1f5a5aa8a89fcffd4e2bb_JaffaCakes118.exe	89
PID 4188 wrote to memory of 2288	4188	a7b5afb958e1f5a5aa8a89fcffd4e2bb_JaffaCakes118.exe	89
PID 4188 wrote to memory of 1320	4188	a7b5afb958e1f5a5aa8a89fcffd4e2bb_JaffaCakes118.exe	92
PID 4188 wrote to memory of 1320	4188	a7b5afb958e1f5a5aa8a89fcffd4e2bb_JaffaCakes118.exe	92
PID 4188 wrote to memory of 1320	4188	a7b5afb958e1f5a5aa8a89fcffd4e2bb_JaffaCakes118.exe	92
PID 4188 wrote to memory of 1912	4188	a7b5afb958e1f5a5aa8a89fcffd4e2bb_JaffaCakes118.exe	96
PID 4188 wrote to memory of 1912	4188	a7b5afb958e1f5a5aa8a89fcffd4e2bb_JaffaCakes118.exe	96
PID 4188 wrote to memory of 1912	4188	a7b5afb958e1f5a5aa8a89fcffd4e2bb_JaffaCakes118.exe	96
PID 4188 wrote to memory of 4260	4188	a7b5afb958e1f5a5aa8a89fcffd4e2bb_JaffaCakes118.exe	99
PID 4188 wrote to memory of 4260	4188	a7b5afb958e1f5a5aa8a89fcffd4e2bb_JaffaCakes118.exe	99
PID 4188 wrote to memory of 4260	4188	a7b5afb958e1f5a5aa8a89fcffd4e2bb_JaffaCakes118.exe	99
PID 4672 wrote to memory of 2968	4672	xshrwbtr.exe	110
PID 4672 wrote to memory of 2968	4672	xshrwbtr.exe	110
PID 4672 wrote to memory of 2968	4672	xshrwbtr.exe	110
PID 4672 wrote to memory of 2968	4672	xshrwbtr.exe	110
PID 4672 wrote to memory of 2968	4672	xshrwbtr.exe	110

C:\Users\Admin\AppData\Local\Temp\a7b5afb958e1f5a5aa8a89fcffd4e2bb_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\a7b5afb958e1f5a5aa8a89fcffd4e2bb_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4188
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\oampotrk\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1720
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\xshrwbtr.exe" C:\Windows\SysWOW64\oampotrk\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1084
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create oampotrk binPath= "C:\Windows\SysWOW64\oampotrk\xshrwbtr.exe /d\"C:\Users\Admin\AppData\Local\Temp\a7b5afb958e1f5a5aa8a89fcffd4e2bb_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2288
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description oampotrk "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1320
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start oampotrk
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1912
- 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:4260
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4188 -s 1044
  2⤵
  - Program crash
  PID:4368

C:\Windows\SysWOW64\oampotrk\xshrwbtr.exe
C:\Windows\SysWOW64\oampotrk\xshrwbtr.exe /d"C:\Users\Admin\AppData\Local\Temp\a7b5afb958e1f5a5aa8a89fcffd4e2bb_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4672
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2968
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4672 -s 560
  2⤵
  - Program crash
  PID:4408

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 4188 -ip 4188
1⤵
PID:4660

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 4672 -ip 4672
1⤵
PID:1484

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\xshrwbtr.exe

Filesize
14.4MB

MD5
219b2b93626e2fa750118454f0495bf0

SHA1
faa2ca3d59b07e4904ffff1685b945b75961aa6d

SHA256
64ab9219c8739ced13a45aed15be1478f07569bf7b81ad8a67a511ea42c8d61a

SHA512
cfc0cf95bad1edd2931d1eb49145203b83550528a1ddf59327366d7363b5a466fd50265534768de3381497bb49d7ff3312f76864e8fcf09b0b753901e1d70f98

Download Submit
memory/2968-11-0x0000000001040000-0x0000000001055000-memory.dmp

Filesize
84KB

Download
memory/2968-13-0x0000000001040000-0x0000000001055000-memory.dmp

Filesize
84KB

Download
memory/2968-14-0x0000000001040000-0x0000000001055000-memory.dmp

Filesize
84KB

Download
memory/4188-1-0x0000000002F60000-0x0000000003060000-memory.dmp

Filesize
1024KB

Download
memory/4188-2-0x0000000002F10000-0x0000000002F23000-memory.dmp

Filesize
76KB

Download
memory/4188-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4188-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4188-9-0x0000000002F10000-0x0000000002F23000-memory.dmp

Filesize
76KB

Download
memory/4188-8-0x0000000000400000-0x0000000002C6C000-memory.dmp

Filesize
40.4MB

Download
memory/4672-15-0x0000000000400000-0x0000000002C6C000-memory.dmp

Filesize
40.4MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads