tofsee | e28c9ae1fd731c719960f6c4246f8931963c18c04dbcfb967749c0e17c2a4584

General

Target

fb3047f88312a2511364821ffbf29fe3_JaffaCakes118.exe
Size

12.3MB
MD5

fb3047f88312a2511364821ffbf29fe3
SHA1

d4032a89a9e3d06df1c1c50b02ea07f4a2d4ff2c
SHA256

e28c9ae1fd731c719960f6c4246f8931963c18c04dbcfb967749c0e17c2a4584
SHA512

2022d1547e3d3aba1ec8be145547c08ed1a9f7cc0f4c9176e335b3b0769da88f4e7379acd08ce90ac01eb840c85aca167f5c22f9f130e427b03b7f964cc844d3
SSDEEP

49152:5HM3pipipipipipipipipipipipipipipipipipipipipipipipipipipipipipH:RM

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
1700	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\wieefwyu\ImagePath = "C:\\Windows\\SysWOW64\\wieefwyu\\kzmiutmy.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-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation	fb3047f88312a2511364821ffbf29fe3_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
4792	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3772	kzmiutmy.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3772 set thread context of 4792	3772	kzmiutmy.exe	105

Launches sc.exe 3 IoCs

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

pid	Process
1764	sc.exe
2008	sc.exe
1900	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
3760	4204	WerFault.exe	82
4004	3772	WerFault.exe	93

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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	kzmiutmy.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	fb3047f88312a2511364821ffbf29fe3_JaffaCakes118.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	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4204 wrote to memory of 3036	4204	fb3047f88312a2511364821ffbf29fe3_JaffaCakes118.exe	83
PID 4204 wrote to memory of 3036	4204	fb3047f88312a2511364821ffbf29fe3_JaffaCakes118.exe	83
PID 4204 wrote to memory of 3036	4204	fb3047f88312a2511364821ffbf29fe3_JaffaCakes118.exe	83
PID 4204 wrote to memory of 880	4204	fb3047f88312a2511364821ffbf29fe3_JaffaCakes118.exe	85
PID 4204 wrote to memory of 880	4204	fb3047f88312a2511364821ffbf29fe3_JaffaCakes118.exe	85
PID 4204 wrote to memory of 880	4204	fb3047f88312a2511364821ffbf29fe3_JaffaCakes118.exe	85
PID 4204 wrote to memory of 1764	4204	fb3047f88312a2511364821ffbf29fe3_JaffaCakes118.exe	87
PID 4204 wrote to memory of 1764	4204	fb3047f88312a2511364821ffbf29fe3_JaffaCakes118.exe	87
PID 4204 wrote to memory of 1764	4204	fb3047f88312a2511364821ffbf29fe3_JaffaCakes118.exe	87
PID 4204 wrote to memory of 2008	4204	fb3047f88312a2511364821ffbf29fe3_JaffaCakes118.exe	89
PID 4204 wrote to memory of 2008	4204	fb3047f88312a2511364821ffbf29fe3_JaffaCakes118.exe	89
PID 4204 wrote to memory of 2008	4204	fb3047f88312a2511364821ffbf29fe3_JaffaCakes118.exe	89
PID 4204 wrote to memory of 1900	4204	fb3047f88312a2511364821ffbf29fe3_JaffaCakes118.exe	91
PID 4204 wrote to memory of 1900	4204	fb3047f88312a2511364821ffbf29fe3_JaffaCakes118.exe	91
PID 4204 wrote to memory of 1900	4204	fb3047f88312a2511364821ffbf29fe3_JaffaCakes118.exe	91
PID 4204 wrote to memory of 1700	4204	fb3047f88312a2511364821ffbf29fe3_JaffaCakes118.exe	94
PID 4204 wrote to memory of 1700	4204	fb3047f88312a2511364821ffbf29fe3_JaffaCakes118.exe	94
PID 4204 wrote to memory of 1700	4204	fb3047f88312a2511364821ffbf29fe3_JaffaCakes118.exe	94
PID 3772 wrote to memory of 4792	3772	kzmiutmy.exe	105
PID 3772 wrote to memory of 4792	3772	kzmiutmy.exe	105
PID 3772 wrote to memory of 4792	3772	kzmiutmy.exe	105
PID 3772 wrote to memory of 4792	3772	kzmiutmy.exe	105
PID 3772 wrote to memory of 4792	3772	kzmiutmy.exe	105

C:\Users\Admin\AppData\Local\Temp\fb3047f88312a2511364821ffbf29fe3_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\fb3047f88312a2511364821ffbf29fe3_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4204
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\wieefwyu\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3036
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\kzmiutmy.exe" C:\Windows\SysWOW64\wieefwyu\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:880
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create wieefwyu binPath= "C:\Windows\SysWOW64\wieefwyu\kzmiutmy.exe /d\"C:\Users\Admin\AppData\Local\Temp\fb3047f88312a2511364821ffbf29fe3_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1764
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description wieefwyu "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2008
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start wieefwyu
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1900
- 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:1700
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4204 -s 788
  2⤵
  - Program crash
  PID:3760

C:\Windows\SysWOW64\wieefwyu\kzmiutmy.exe
C:\Windows\SysWOW64\wieefwyu\kzmiutmy.exe /d"C:\Users\Admin\AppData\Local\Temp\fb3047f88312a2511364821ffbf29fe3_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3772
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4792
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3772 -s 532
  2⤵
  - Program crash
  PID:4004

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 4204 -ip 4204
1⤵
PID:3232

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 3772 -ip 3772
1⤵
PID:4856

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\kzmiutmy.exe

Filesize
10.7MB

MD5
4b9935aedd1a840129b0458d977bbcbe

SHA1
969c9d2028c8d28fad8fb0cf44cd95db3ab4685b

SHA256
ad95462cc52e27b5c1f0145496b73089b18259321d2d24ad356976e11344b37a

SHA512
3bbc419b765940ecc6e2abe133e6dae78451e4abca88ff723a1efd740d74ee49eebbd38366ca0967f26ba4917fd549505bb438743157e3e2fa31baba200c2bc0

Download Submit
memory/3772-11-0x0000000000400000-0x00000000004BD000-memory.dmp

Filesize
756KB

Download
memory/3772-12-0x0000000000400000-0x00000000004BD000-memory.dmp

Filesize
756KB

Download
memory/3772-13-0x0000000000400000-0x00000000004BD000-memory.dmp

Filesize
756KB

Download
memory/3772-19-0x0000000000400000-0x00000000004BD000-memory.dmp

Filesize
756KB

Download
memory/4204-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4204-1-0x0000000000620000-0x0000000000720000-memory.dmp

Filesize
1024KB

Download
memory/4204-8-0x0000000000400000-0x00000000004BD000-memory.dmp

Filesize
756KB

Download
memory/4204-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4204-9-0x0000000002200000-0x0000000002213000-memory.dmp

Filesize
76KB

Download
memory/4204-2-0x0000000002200000-0x0000000002213000-memory.dmp

Filesize
76KB

Download
memory/4792-14-0x0000000000840000-0x0000000000855000-memory.dmp

Filesize
84KB

Download
memory/4792-16-0x0000000000840000-0x0000000000855000-memory.dmp

Filesize
84KB

Download
memory/4792-17-0x0000000000840000-0x0000000000855000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads