tofsee | 88e38a15962ba6b86297a18b6635e6774b76cc91198c5cf432b4336610e015a2

General

Target

4cd172768ec94c54ad538e4e07301fb8_JaffaCakes118.exe
Size

11.9MB
MD5

4cd172768ec94c54ad538e4e07301fb8
SHA1

f908ce00f8b7df39eb89884041b354766d3082a9
SHA256

88e38a15962ba6b86297a18b6635e6774b76cc91198c5cf432b4336610e015a2
SHA512

e36edff9d68b98afa0d2124b1cb5c765eca702e5c877fa8f2524a5e7a3b098bb42574d62fc56bdff0bacbc421af196460c59f198204eee490d8eb6f256f4317c
SSDEEP

49152:Igntttttttttttttttttttttttttttttttttttttttttttttttttttttttttttt/:I

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
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
4956	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\pzqonok\ImagePath = "C:\\Windows\\SysWOW64\\pzqonok\\dbkluqfb.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-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation	4cd172768ec94c54ad538e4e07301fb8_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
3384	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
636	dbkluqfb.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 636 set thread context of 3384	636	dbkluqfb.exe	104

Launches sc.exe 3 IoCs

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

pid	Process
4404	sc.exe
1272	sc.exe
2096	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

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	4cd172768ec94c54ad538e4e07301fb8_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	dbkluqfb.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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3456 wrote to memory of 4640	3456	4cd172768ec94c54ad538e4e07301fb8_JaffaCakes118.exe	87
PID 3456 wrote to memory of 4640	3456	4cd172768ec94c54ad538e4e07301fb8_JaffaCakes118.exe	87
PID 3456 wrote to memory of 4640	3456	4cd172768ec94c54ad538e4e07301fb8_JaffaCakes118.exe	87
PID 3456 wrote to memory of 1452	3456	4cd172768ec94c54ad538e4e07301fb8_JaffaCakes118.exe	91
PID 3456 wrote to memory of 1452	3456	4cd172768ec94c54ad538e4e07301fb8_JaffaCakes118.exe	91
PID 3456 wrote to memory of 1452	3456	4cd172768ec94c54ad538e4e07301fb8_JaffaCakes118.exe	91
PID 3456 wrote to memory of 4404	3456	4cd172768ec94c54ad538e4e07301fb8_JaffaCakes118.exe	93
PID 3456 wrote to memory of 4404	3456	4cd172768ec94c54ad538e4e07301fb8_JaffaCakes118.exe	93
PID 3456 wrote to memory of 4404	3456	4cd172768ec94c54ad538e4e07301fb8_JaffaCakes118.exe	93
PID 3456 wrote to memory of 1272	3456	4cd172768ec94c54ad538e4e07301fb8_JaffaCakes118.exe	97
PID 3456 wrote to memory of 1272	3456	4cd172768ec94c54ad538e4e07301fb8_JaffaCakes118.exe	97
PID 3456 wrote to memory of 1272	3456	4cd172768ec94c54ad538e4e07301fb8_JaffaCakes118.exe	97
PID 3456 wrote to memory of 2096	3456	4cd172768ec94c54ad538e4e07301fb8_JaffaCakes118.exe	99
PID 3456 wrote to memory of 2096	3456	4cd172768ec94c54ad538e4e07301fb8_JaffaCakes118.exe	99
PID 3456 wrote to memory of 2096	3456	4cd172768ec94c54ad538e4e07301fb8_JaffaCakes118.exe	99
PID 3456 wrote to memory of 4956	3456	4cd172768ec94c54ad538e4e07301fb8_JaffaCakes118.exe	102
PID 3456 wrote to memory of 4956	3456	4cd172768ec94c54ad538e4e07301fb8_JaffaCakes118.exe	102
PID 3456 wrote to memory of 4956	3456	4cd172768ec94c54ad538e4e07301fb8_JaffaCakes118.exe	102
PID 636 wrote to memory of 3384	636	dbkluqfb.exe	104
PID 636 wrote to memory of 3384	636	dbkluqfb.exe	104
PID 636 wrote to memory of 3384	636	dbkluqfb.exe	104
PID 636 wrote to memory of 3384	636	dbkluqfb.exe	104
PID 636 wrote to memory of 3384	636	dbkluqfb.exe	104

C:\Users\Admin\AppData\Local\Temp\4cd172768ec94c54ad538e4e07301fb8_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\4cd172768ec94c54ad538e4e07301fb8_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3456
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\pzqonok\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4640
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\dbkluqfb.exe" C:\Windows\SysWOW64\pzqonok\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1452
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create pzqonok binPath= "C:\Windows\SysWOW64\pzqonok\dbkluqfb.exe /d\"C:\Users\Admin\AppData\Local\Temp\4cd172768ec94c54ad538e4e07301fb8_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4404
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description pzqonok "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1272
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start pzqonok
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2096
- 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:4956

C:\Windows\SysWOW64\pzqonok\dbkluqfb.exe
C:\Windows\SysWOW64\pzqonok\dbkluqfb.exe /d"C:\Users\Admin\AppData\Local\Temp\4cd172768ec94c54ad538e4e07301fb8_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:636
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3384

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\dbkluqfb.exe

Filesize
14.3MB

MD5
c51f8f81601d2b02713521b260f9a077

SHA1
98ba94f5e572ac6aa558b10f578ab441fb766b9a

SHA256
699c799b31470969299b2c8f01cf38de7e14d5f8bc3f549947e867119ead84a9

SHA512
7c40de47b44c947401c3587e67c4a2afd00eca3705c3f7bfd256d3f8305275504bd187d9b7f1773ad515c72473e84bc9a87e83985ac588da4ed359686d2c8ffe

Download Submit
memory/636-13-0x0000000000400000-0x000000000045E000-memory.dmp

Filesize
376KB

Download
memory/636-12-0x0000000000400000-0x000000000045E000-memory.dmp

Filesize
376KB

Download
memory/636-11-0x0000000000400000-0x000000000045E000-memory.dmp

Filesize
376KB

Download
memory/636-18-0x0000000000400000-0x000000000045E000-memory.dmp

Filesize
376KB

Download
memory/3384-14-0x0000000001280000-0x0000000001295000-memory.dmp

Filesize
84KB

Download
memory/3384-17-0x0000000001280000-0x0000000001295000-memory.dmp

Filesize
84KB

Download
memory/3384-19-0x0000000001280000-0x0000000001295000-memory.dmp

Filesize
84KB

Download
memory/3456-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3456-2-0x0000000002060000-0x0000000002073000-memory.dmp

Filesize
76KB

Download
memory/3456-7-0x0000000000400000-0x000000000045E000-memory.dmp

Filesize
376KB

Download
memory/3456-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3456-8-0x0000000002060000-0x0000000002073000-memory.dmp

Filesize
76KB

Download
memory/3456-1-0x0000000000530000-0x0000000000630000-memory.dmp

Filesize
1024KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads