tofsee | 27ef0d08d288bc7b44dc6676837bf79d4b75a8515e427c58510c51adf141660f

General

Target

JaffaCakes118_27ef0d08d288bc7b44dc6676837bf79d4b75a8515e427c58510c51adf141660f.exe
Size

272KB
MD5

5926f552991160621e453a9a61fcac49
SHA1

3d19c882fb19d936519e936da722b62aea6959eb
SHA256

27ef0d08d288bc7b44dc6676837bf79d4b75a8515e427c58510c51adf141660f
SHA512

44cab2bf4126e8224ce88906bfc565f59449da8e802e3000b60e991f21d694a3c9b1e4483c5b6b24ea13e1e910ad274d31af5f9b8390ffdc5d23ba283c6fae2b
SSDEEP

6144:wkjwNM3Y+ilFxjBGcdCMcXPxuzbgwu6L7ITsqSigaTwVf:xwNMoFXNGcdCMcXPxunnn7s

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

quadoil.ru

lakeflex.ru

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
1124	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\sxwbncwo\ImagePath = "C:\\Windows\\SysWOW64\\sxwbncwo\\pzerytsh.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-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation	JaffaCakes118_27ef0d08d288bc7b44dc6676837bf79d4b75a8515e427c58510c51adf141660f.exe

Deletes itself 1 IoCs

pid	Process
808	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4400	pzerytsh.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4400 set thread context of 808	4400	pzerytsh.exe	95

Launches sc.exe 3 IoCs

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

pid	Process
1680	sc.exe
4448	sc.exe
3932	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
2928	3672	WerFault.exe	81
852	4400	WerFault.exe	92

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	JaffaCakes118_27ef0d08d288bc7b44dc6676837bf79d4b75a8515e427c58510c51adf141660f.exe
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	pzerytsh.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 3672 wrote to memory of 4056	3672	JaffaCakes118_27ef0d08d288bc7b44dc6676837bf79d4b75a8515e427c58510c51adf141660f.exe	82
PID 3672 wrote to memory of 4056	3672	JaffaCakes118_27ef0d08d288bc7b44dc6676837bf79d4b75a8515e427c58510c51adf141660f.exe	82
PID 3672 wrote to memory of 4056	3672	JaffaCakes118_27ef0d08d288bc7b44dc6676837bf79d4b75a8515e427c58510c51adf141660f.exe	82
PID 3672 wrote to memory of 640	3672	JaffaCakes118_27ef0d08d288bc7b44dc6676837bf79d4b75a8515e427c58510c51adf141660f.exe	84
PID 3672 wrote to memory of 640	3672	JaffaCakes118_27ef0d08d288bc7b44dc6676837bf79d4b75a8515e427c58510c51adf141660f.exe	84
PID 3672 wrote to memory of 640	3672	JaffaCakes118_27ef0d08d288bc7b44dc6676837bf79d4b75a8515e427c58510c51adf141660f.exe	84
PID 3672 wrote to memory of 1680	3672	JaffaCakes118_27ef0d08d288bc7b44dc6676837bf79d4b75a8515e427c58510c51adf141660f.exe	86
PID 3672 wrote to memory of 1680	3672	JaffaCakes118_27ef0d08d288bc7b44dc6676837bf79d4b75a8515e427c58510c51adf141660f.exe	86
PID 3672 wrote to memory of 1680	3672	JaffaCakes118_27ef0d08d288bc7b44dc6676837bf79d4b75a8515e427c58510c51adf141660f.exe	86
PID 3672 wrote to memory of 4448	3672	JaffaCakes118_27ef0d08d288bc7b44dc6676837bf79d4b75a8515e427c58510c51adf141660f.exe	88
PID 3672 wrote to memory of 4448	3672	JaffaCakes118_27ef0d08d288bc7b44dc6676837bf79d4b75a8515e427c58510c51adf141660f.exe	88
PID 3672 wrote to memory of 4448	3672	JaffaCakes118_27ef0d08d288bc7b44dc6676837bf79d4b75a8515e427c58510c51adf141660f.exe	88
PID 3672 wrote to memory of 3932	3672	JaffaCakes118_27ef0d08d288bc7b44dc6676837bf79d4b75a8515e427c58510c51adf141660f.exe	90
PID 3672 wrote to memory of 3932	3672	JaffaCakes118_27ef0d08d288bc7b44dc6676837bf79d4b75a8515e427c58510c51adf141660f.exe	90
PID 3672 wrote to memory of 3932	3672	JaffaCakes118_27ef0d08d288bc7b44dc6676837bf79d4b75a8515e427c58510c51adf141660f.exe	90
PID 3672 wrote to memory of 1124	3672	JaffaCakes118_27ef0d08d288bc7b44dc6676837bf79d4b75a8515e427c58510c51adf141660f.exe	93
PID 3672 wrote to memory of 1124	3672	JaffaCakes118_27ef0d08d288bc7b44dc6676837bf79d4b75a8515e427c58510c51adf141660f.exe	93
PID 3672 wrote to memory of 1124	3672	JaffaCakes118_27ef0d08d288bc7b44dc6676837bf79d4b75a8515e427c58510c51adf141660f.exe	93
PID 4400 wrote to memory of 808	4400	pzerytsh.exe	95
PID 4400 wrote to memory of 808	4400	pzerytsh.exe	95
PID 4400 wrote to memory of 808	4400	pzerytsh.exe	95
PID 4400 wrote to memory of 808	4400	pzerytsh.exe	95
PID 4400 wrote to memory of 808	4400	pzerytsh.exe	95

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_27ef0d08d288bc7b44dc6676837bf79d4b75a8515e427c58510c51adf141660f.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_27ef0d08d288bc7b44dc6676837bf79d4b75a8515e427c58510c51adf141660f.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3672
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\sxwbncwo\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4056
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\pzerytsh.exe" C:\Windows\SysWOW64\sxwbncwo\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:640
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create sxwbncwo binPath= "C:\Windows\SysWOW64\sxwbncwo\pzerytsh.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_27ef0d08d288bc7b44dc6676837bf79d4b75a8515e427c58510c51adf141660f.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1680
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description sxwbncwo "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4448
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start sxwbncwo
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3932
- 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:1124
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3672 -s 1036
  2⤵
  - Program crash
  PID:2928

C:\Windows\SysWOW64\sxwbncwo\pzerytsh.exe
C:\Windows\SysWOW64\sxwbncwo\pzerytsh.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_27ef0d08d288bc7b44dc6676837bf79d4b75a8515e427c58510c51adf141660f.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4400
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:808
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4400 -s 560
  2⤵
  - Program crash
  PID:852

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 3672 -ip 3672
1⤵
PID:3312

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 560 -p 4400 -ip 4400
1⤵
PID:3976

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\pzerytsh.exe

Filesize
13.6MB

MD5
4801f88b957388cb83d74e0631c65dc7

SHA1
9ce223d710e249dd1ef70e44c289cd66925e8dd3

SHA256
a022d61f79442e26a5a70bc20cdda0ef5130378fd4df55fe4cf64de7b6e61600

SHA512
9dfdb638a0cde6d73433e3aef9e4e5d043cd9e39f508f218225449c8d7f9c1ac687c60506334fbd26bd6c9fc72d1b9c3f5c0fd7981b6c7dbc1fe3eca40ada51b

Download Submit
memory/808-8-0x00000000009D0000-0x00000000009E5000-memory.dmp

Filesize
84KB

Download
memory/808-20-0x00000000009D0000-0x00000000009E5000-memory.dmp

Filesize
84KB

Download
memory/808-11-0x00000000009D0000-0x00000000009E5000-memory.dmp

Filesize
84KB

Download
memory/808-19-0x00000000009D0000-0x00000000009E5000-memory.dmp

Filesize
84KB

Download
memory/3672-16-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/3672-1-0x00000000021A0000-0x00000000021B3000-memory.dmp

Filesize
76KB

Download
memory/3672-2-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3672-0-0x0000000002190000-0x000000000219D000-memory.dmp

Filesize
52KB

Download
memory/3672-12-0x0000000002190000-0x000000000219D000-memory.dmp

Filesize
52KB

Download
memory/3672-13-0x00000000021A0000-0x00000000021B3000-memory.dmp

Filesize
76KB

Download
memory/3672-14-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4400-7-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/4400-15-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/4400-6-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads