tofsee | f06f8570f6999f01ade88f2c09538759e55539eb7c2d452999e1c66ca83e8c02

General

Target

JaffaCakes118_c60a9d97501c8fccb7ce37b52654839b.exe
Size

14.1MB
MD5

c60a9d97501c8fccb7ce37b52654839b
SHA1

94fc047b6307fd89d39eaad454db89dc1d0809c4
SHA256

f06f8570f6999f01ade88f2c09538759e55539eb7c2d452999e1c66ca83e8c02
SHA512

5254c7f7f7164e27408bdaefe28b948a0b61e576161bd92d0aecefc7b327687e2f10c80ded601fbcfd0d799d887c4b3895e251d3db0a9ef50b3a58086a53ac45
SSDEEP

12288:R0Xz1CuwA5Rp0rp0rp0rp0rp0rp0rp0rp0rp0rp0rp0rp0rp0rp0rp0rp0rp0rpZ:R0X2

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
4112	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\foyxcptc\ImagePath = "C:\\Windows\\SysWOW64\\foyxcptc\\vcalqlzn.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-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	JaffaCakes118_c60a9d97501c8fccb7ce37b52654839b.exe

Deletes itself 1 IoCs

pid	Process
4128	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
456	vcalqlzn.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 456 set thread context of 4128	456	vcalqlzn.exe	106

Launches sc.exe 3 IoCs

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

pid	Process
4272	sc.exe
4100	sc.exe
2320	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 value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
1184	412	WerFault.exe	82
3592	456	WerFault.exe	96

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	vcalqlzn.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_c60a9d97501c8fccb7ce37b52654839b.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	netsh.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	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 412 wrote to memory of 2004	412	JaffaCakes118_c60a9d97501c8fccb7ce37b52654839b.exe	83
PID 412 wrote to memory of 2004	412	JaffaCakes118_c60a9d97501c8fccb7ce37b52654839b.exe	83
PID 412 wrote to memory of 2004	412	JaffaCakes118_c60a9d97501c8fccb7ce37b52654839b.exe	83
PID 412 wrote to memory of 2980	412	JaffaCakes118_c60a9d97501c8fccb7ce37b52654839b.exe	85
PID 412 wrote to memory of 2980	412	JaffaCakes118_c60a9d97501c8fccb7ce37b52654839b.exe	85
PID 412 wrote to memory of 2980	412	JaffaCakes118_c60a9d97501c8fccb7ce37b52654839b.exe	85
PID 412 wrote to memory of 4272	412	JaffaCakes118_c60a9d97501c8fccb7ce37b52654839b.exe	88
PID 412 wrote to memory of 4272	412	JaffaCakes118_c60a9d97501c8fccb7ce37b52654839b.exe	88
PID 412 wrote to memory of 4272	412	JaffaCakes118_c60a9d97501c8fccb7ce37b52654839b.exe	88
PID 412 wrote to memory of 4100	412	JaffaCakes118_c60a9d97501c8fccb7ce37b52654839b.exe	92
PID 412 wrote to memory of 4100	412	JaffaCakes118_c60a9d97501c8fccb7ce37b52654839b.exe	92
PID 412 wrote to memory of 4100	412	JaffaCakes118_c60a9d97501c8fccb7ce37b52654839b.exe	92
PID 412 wrote to memory of 2320	412	JaffaCakes118_c60a9d97501c8fccb7ce37b52654839b.exe	94
PID 412 wrote to memory of 2320	412	JaffaCakes118_c60a9d97501c8fccb7ce37b52654839b.exe	94
PID 412 wrote to memory of 2320	412	JaffaCakes118_c60a9d97501c8fccb7ce37b52654839b.exe	94
PID 412 wrote to memory of 4112	412	JaffaCakes118_c60a9d97501c8fccb7ce37b52654839b.exe	100
PID 412 wrote to memory of 4112	412	JaffaCakes118_c60a9d97501c8fccb7ce37b52654839b.exe	100
PID 412 wrote to memory of 4112	412	JaffaCakes118_c60a9d97501c8fccb7ce37b52654839b.exe	100
PID 456 wrote to memory of 4128	456	vcalqlzn.exe	106
PID 456 wrote to memory of 4128	456	vcalqlzn.exe	106
PID 456 wrote to memory of 4128	456	vcalqlzn.exe	106
PID 456 wrote to memory of 4128	456	vcalqlzn.exe	106
PID 456 wrote to memory of 4128	456	vcalqlzn.exe	106

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_c60a9d97501c8fccb7ce37b52654839b.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_c60a9d97501c8fccb7ce37b52654839b.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:412
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\foyxcptc\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2004
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\vcalqlzn.exe" C:\Windows\SysWOW64\foyxcptc\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2980
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create foyxcptc binPath= "C:\Windows\SysWOW64\foyxcptc\vcalqlzn.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_c60a9d97501c8fccb7ce37b52654839b.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4272
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description foyxcptc "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4100
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start foyxcptc
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2320
- 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:4112
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 412 -s 1260
  2⤵
  - Program crash
  PID:1184

C:\Windows\SysWOW64\foyxcptc\vcalqlzn.exe
C:\Windows\SysWOW64\foyxcptc\vcalqlzn.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_c60a9d97501c8fccb7ce37b52654839b.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:456
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4128
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 456 -s 508
  2⤵
  - Program crash
  PID:3592

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 412 -ip 412
1⤵
PID:1580

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 456 -ip 456
1⤵
PID:4536

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\vcalqlzn.exe

Filesize
12.7MB

MD5
0be0308f0e943d9f7bec56e959182a2b

SHA1
61d0b6898a853304c81735e5d819b5b63673d975

SHA256
281e9cf7c6d1cafccdaf693341f480ddb2ce5bda47938651ebc474c7cb8073f6

SHA512
7638d57520dbda2f24abe3df19d35fedcbec157575d648f56f99e8fcfc8521face52cf871d69ee522f46c80e95a5006bbb5534e35e567f17dadb920eced9d31c

Download Submit
memory/412-8-0x0000000000400000-0x0000000000441000-memory.dmp

Filesize
260KB

Download
memory/412-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/412-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/412-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/412-9-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/412-1-0x00000000005D0000-0x00000000006D0000-memory.dmp

Filesize
1024KB

Download
memory/456-12-0x0000000000400000-0x0000000000441000-memory.dmp

Filesize
260KB

Download
memory/456-11-0x0000000000400000-0x0000000000441000-memory.dmp

Filesize
260KB

Download
memory/456-13-0x0000000000400000-0x0000000000441000-memory.dmp

Filesize
260KB

Download
memory/456-18-0x0000000000400000-0x0000000000441000-memory.dmp

Filesize
260KB

Download
memory/4128-14-0x0000000000950000-0x0000000000965000-memory.dmp

Filesize
84KB

Download
memory/4128-16-0x0000000000950000-0x0000000000965000-memory.dmp

Filesize
84KB

Download
memory/4128-17-0x0000000000950000-0x0000000000965000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads