tofsee | 61d67d9b97ad4f75a1d9d4771ccdbf3b7160c88e62d1cf5a4e95e109fdef57f6

General

Target

900163c4f71e8d3884bd31b15c68b07e_JaffaCakes118.exe
Size

10.2MB
MD5

900163c4f71e8d3884bd31b15c68b07e
SHA1

bc590afc81ebceb8494422acebdecefbe5b83e71
SHA256

61d67d9b97ad4f75a1d9d4771ccdbf3b7160c88e62d1cf5a4e95e109fdef57f6
SHA512

dbcb9e45160624348d3149066681bcf38a0c4e27b9e380f6cc94892b281d14689952a9edf4543deaa966e0af47d0aeb29c7c8a0aec6c8c2bb76855a4a96b7dc9
SSDEEP

6144:9EqI45WkCzb8c2Tj8diBEFHslNasXqZwCXwwwwwwwwwwwwwwwwwwwwwwwwwwwwwo:9EqI45WkCzbYj8SLasaZ

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
1840	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\ubtafrc\ImagePath = "C:\\Windows\\SysWOW64\\ubtafrc\\pbnvvgvd.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-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation	900163c4f71e8d3884bd31b15c68b07e_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
4992	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2504	pbnvvgvd.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2504 set thread context of 4992	2504	pbnvvgvd.exe	104

Launches sc.exe 3 IoCs

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

pid	Process
1428	sc.exe
1824	sc.exe
1616	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
2528	520	WerFault.exe	82
3572	2504	WerFault.exe	95

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	900163c4f71e8d3884bd31b15c68b07e_JaffaCakes118.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	pbnvvgvd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 520 wrote to memory of 2108	520	900163c4f71e8d3884bd31b15c68b07e_JaffaCakes118.exe	83
PID 520 wrote to memory of 2108	520	900163c4f71e8d3884bd31b15c68b07e_JaffaCakes118.exe	83
PID 520 wrote to memory of 2108	520	900163c4f71e8d3884bd31b15c68b07e_JaffaCakes118.exe	83
PID 520 wrote to memory of 228	520	900163c4f71e8d3884bd31b15c68b07e_JaffaCakes118.exe	85
PID 520 wrote to memory of 228	520	900163c4f71e8d3884bd31b15c68b07e_JaffaCakes118.exe	85
PID 520 wrote to memory of 228	520	900163c4f71e8d3884bd31b15c68b07e_JaffaCakes118.exe	85
PID 520 wrote to memory of 1428	520	900163c4f71e8d3884bd31b15c68b07e_JaffaCakes118.exe	87
PID 520 wrote to memory of 1428	520	900163c4f71e8d3884bd31b15c68b07e_JaffaCakes118.exe	87
PID 520 wrote to memory of 1428	520	900163c4f71e8d3884bd31b15c68b07e_JaffaCakes118.exe	87
PID 520 wrote to memory of 1824	520	900163c4f71e8d3884bd31b15c68b07e_JaffaCakes118.exe	91
PID 520 wrote to memory of 1824	520	900163c4f71e8d3884bd31b15c68b07e_JaffaCakes118.exe	91
PID 520 wrote to memory of 1824	520	900163c4f71e8d3884bd31b15c68b07e_JaffaCakes118.exe	91
PID 520 wrote to memory of 1616	520	900163c4f71e8d3884bd31b15c68b07e_JaffaCakes118.exe	93
PID 520 wrote to memory of 1616	520	900163c4f71e8d3884bd31b15c68b07e_JaffaCakes118.exe	93
PID 520 wrote to memory of 1616	520	900163c4f71e8d3884bd31b15c68b07e_JaffaCakes118.exe	93
PID 520 wrote to memory of 1840	520	900163c4f71e8d3884bd31b15c68b07e_JaffaCakes118.exe	96
PID 520 wrote to memory of 1840	520	900163c4f71e8d3884bd31b15c68b07e_JaffaCakes118.exe	96
PID 520 wrote to memory of 1840	520	900163c4f71e8d3884bd31b15c68b07e_JaffaCakes118.exe	96
PID 2504 wrote to memory of 4992	2504	pbnvvgvd.exe	104
PID 2504 wrote to memory of 4992	2504	pbnvvgvd.exe	104
PID 2504 wrote to memory of 4992	2504	pbnvvgvd.exe	104
PID 2504 wrote to memory of 4992	2504	pbnvvgvd.exe	104
PID 2504 wrote to memory of 4992	2504	pbnvvgvd.exe	104

C:\Users\Admin\AppData\Local\Temp\900163c4f71e8d3884bd31b15c68b07e_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\900163c4f71e8d3884bd31b15c68b07e_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:520
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ubtafrc\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2108
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\pbnvvgvd.exe" C:\Windows\SysWOW64\ubtafrc\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:228
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create ubtafrc binPath= "C:\Windows\SysWOW64\ubtafrc\pbnvvgvd.exe /d\"C:\Users\Admin\AppData\Local\Temp\900163c4f71e8d3884bd31b15c68b07e_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1428
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description ubtafrc "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1824
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start ubtafrc
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1616
- 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:1840
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 520 -s 600
  2⤵
  - Program crash
  PID:2528

C:\Windows\SysWOW64\ubtafrc\pbnvvgvd.exe
C:\Windows\SysWOW64\ubtafrc\pbnvvgvd.exe /d"C:\Users\Admin\AppData\Local\Temp\900163c4f71e8d3884bd31b15c68b07e_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2504
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4992
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2504 -s 564
  2⤵
  - Program crash
  PID:3572

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 520 -ip 520
1⤵
PID:3320

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 540 -p 2504 -ip 2504
1⤵
PID:3348

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\pbnvvgvd.exe

Filesize
14.7MB

MD5
eb44647a0d1ad606a986770a17357081

SHA1
1f8416c3092079ed57241a33971e0ef5311708f7

SHA256
a80ff6a4a5f74b7fd1312bd8de6992374c6914290cee06dd06791c9a5bb2a719

SHA512
302468fd7605df50a4f40a57b94fbf5e24ef9e8b07daf900cd3ab073b0da703f09c6575efc5ac9502aa2d18315af938669dae49c3d87cb07a8b5e7a7c7de4ac0

Download Submit
memory/520-1-0x0000000002CF0000-0x0000000002DF0000-memory.dmp

Filesize
1024KB

Download
memory/520-2-0x0000000002BC0000-0x0000000002BD3000-memory.dmp

Filesize
76KB

Download
memory/520-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/520-12-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/520-11-0x0000000002BC0000-0x0000000002BD3000-memory.dmp

Filesize
76KB

Download
memory/520-10-0x0000000000400000-0x0000000002B8F000-memory.dmp

Filesize
39.6MB

Download
memory/2504-13-0x0000000000400000-0x0000000002B8F000-memory.dmp

Filesize
39.6MB

Download
memory/4992-8-0x00000000005C0000-0x00000000005D5000-memory.dmp

Filesize
84KB

Download
memory/4992-14-0x00000000005C0000-0x00000000005D5000-memory.dmp

Filesize
84KB

Download
memory/4992-15-0x00000000005C0000-0x00000000005D5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads