tofsee | f38548a5d6c54e88538aabdfacbde0ee9948aec13f0550ba3f901c72725df0dd

General

Target

JaffaCakes118_f38548a5d6c54e88538aabdfacbde0ee9948aec13f0550ba3f901c72725df0dd.exe
Size

209KB
MD5

029139e095eb6c94f87dd5d2b74a8e3b
SHA1

bd944e67580e3519b1c0e7d0978688a8f7a0c6df
SHA256

f38548a5d6c54e88538aabdfacbde0ee9948aec13f0550ba3f901c72725df0dd
SHA512

7de905f79271edc0856e11090901deed59525782df87a8db1af92ddaed58adae3052a3db0185f488543745330adcdf6426552f0051b8cdf8ed9427a26300fdda
SSDEEP

3072:221lByeQXR4HJtywSjmkXRg6kKMdpDbW3KKiBZPwU3fB/tOvZxphgC:221lyyJtywGXRg6RMd5WsB73pOZF

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
380	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\kbxwsjj\ImagePath = "C:\\Windows\\SysWOW64\\kbxwsjj\\gjckiksc.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-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	JaffaCakes118_f38548a5d6c54e88538aabdfacbde0ee9948aec13f0550ba3f901c72725df0dd.exe

Deletes itself 1 IoCs

pid	Process
1128	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
392	gjckiksc.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 392 set thread context of 1128	392	gjckiksc.exe	100

Launches sc.exe 3 IoCs

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

pid	Process
1308	sc.exe
1020	sc.exe
1708	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 1 IoCs

pid	pid_target	Process	procid_target
432	3124	WerFault.exe	83

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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	gjckiksc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_f38548a5d6c54e88538aabdfacbde0ee9948aec13f0550ba3f901c72725df0dd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3124 wrote to memory of 1448	3124	JaffaCakes118_f38548a5d6c54e88538aabdfacbde0ee9948aec13f0550ba3f901c72725df0dd.exe	84
PID 3124 wrote to memory of 1448	3124	JaffaCakes118_f38548a5d6c54e88538aabdfacbde0ee9948aec13f0550ba3f901c72725df0dd.exe	84
PID 3124 wrote to memory of 1448	3124	JaffaCakes118_f38548a5d6c54e88538aabdfacbde0ee9948aec13f0550ba3f901c72725df0dd.exe	84
PID 3124 wrote to memory of 1756	3124	JaffaCakes118_f38548a5d6c54e88538aabdfacbde0ee9948aec13f0550ba3f901c72725df0dd.exe	86
PID 3124 wrote to memory of 1756	3124	JaffaCakes118_f38548a5d6c54e88538aabdfacbde0ee9948aec13f0550ba3f901c72725df0dd.exe	86
PID 3124 wrote to memory of 1756	3124	JaffaCakes118_f38548a5d6c54e88538aabdfacbde0ee9948aec13f0550ba3f901c72725df0dd.exe	86
PID 3124 wrote to memory of 1308	3124	JaffaCakes118_f38548a5d6c54e88538aabdfacbde0ee9948aec13f0550ba3f901c72725df0dd.exe	88
PID 3124 wrote to memory of 1308	3124	JaffaCakes118_f38548a5d6c54e88538aabdfacbde0ee9948aec13f0550ba3f901c72725df0dd.exe	88
PID 3124 wrote to memory of 1308	3124	JaffaCakes118_f38548a5d6c54e88538aabdfacbde0ee9948aec13f0550ba3f901c72725df0dd.exe	88
PID 3124 wrote to memory of 1020	3124	JaffaCakes118_f38548a5d6c54e88538aabdfacbde0ee9948aec13f0550ba3f901c72725df0dd.exe	90
PID 3124 wrote to memory of 1020	3124	JaffaCakes118_f38548a5d6c54e88538aabdfacbde0ee9948aec13f0550ba3f901c72725df0dd.exe	90
PID 3124 wrote to memory of 1020	3124	JaffaCakes118_f38548a5d6c54e88538aabdfacbde0ee9948aec13f0550ba3f901c72725df0dd.exe	90
PID 3124 wrote to memory of 1708	3124	JaffaCakes118_f38548a5d6c54e88538aabdfacbde0ee9948aec13f0550ba3f901c72725df0dd.exe	92
PID 3124 wrote to memory of 1708	3124	JaffaCakes118_f38548a5d6c54e88538aabdfacbde0ee9948aec13f0550ba3f901c72725df0dd.exe	92
PID 3124 wrote to memory of 1708	3124	JaffaCakes118_f38548a5d6c54e88538aabdfacbde0ee9948aec13f0550ba3f901c72725df0dd.exe	92
PID 3124 wrote to memory of 380	3124	JaffaCakes118_f38548a5d6c54e88538aabdfacbde0ee9948aec13f0550ba3f901c72725df0dd.exe	95
PID 3124 wrote to memory of 380	3124	JaffaCakes118_f38548a5d6c54e88538aabdfacbde0ee9948aec13f0550ba3f901c72725df0dd.exe	95
PID 3124 wrote to memory of 380	3124	JaffaCakes118_f38548a5d6c54e88538aabdfacbde0ee9948aec13f0550ba3f901c72725df0dd.exe	95
PID 392 wrote to memory of 1128	392	gjckiksc.exe	100
PID 392 wrote to memory of 1128	392	gjckiksc.exe	100
PID 392 wrote to memory of 1128	392	gjckiksc.exe	100
PID 392 wrote to memory of 1128	392	gjckiksc.exe	100
PID 392 wrote to memory of 1128	392	gjckiksc.exe	100

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_f38548a5d6c54e88538aabdfacbde0ee9948aec13f0550ba3f901c72725df0dd.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_f38548a5d6c54e88538aabdfacbde0ee9948aec13f0550ba3f901c72725df0dd.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3124
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\kbxwsjj\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1448
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\gjckiksc.exe" C:\Windows\SysWOW64\kbxwsjj\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1756
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create kbxwsjj binPath= "C:\Windows\SysWOW64\kbxwsjj\gjckiksc.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_f38548a5d6c54e88538aabdfacbde0ee9948aec13f0550ba3f901c72725df0dd.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1308
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description kbxwsjj "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1020
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start kbxwsjj
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1708
- 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:380
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3124 -s 596
  2⤵
  - Program crash
  PID:432

C:\Windows\SysWOW64\kbxwsjj\gjckiksc.exe
C:\Windows\SysWOW64\kbxwsjj\gjckiksc.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_f38548a5d6c54e88538aabdfacbde0ee9948aec13f0550ba3f901c72725df0dd.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:392
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1128

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 3124 -ip 3124
1⤵
PID:3864

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\gjckiksc.exe

Filesize
10.9MB

MD5
0fcec7bf208cf396492a871afe810291

SHA1
f876dd999486c587998a82838f4e19fd94b7c174

SHA256
828853cfb576d01368e09148e742ba52b0e5bee627258f63dadb3f4497fa3030

SHA512
187ca5009e3c89ea3db4bdcd4100ffaa2413103c9d8df945b362d33fbb2c5d3ba57a15df938c5714ece291f7606dbb077d7abc213ebf397bc74e4230263de192

Download Submit
memory/392-12-0x0000000000400000-0x0000000002B74000-memory.dmp

Filesize
39.5MB

Download
memory/1128-11-0x0000000000830000-0x0000000000845000-memory.dmp

Filesize
84KB

Download
memory/1128-14-0x0000000000830000-0x0000000000845000-memory.dmp

Filesize
84KB

Download
memory/1128-15-0x0000000000830000-0x0000000000845000-memory.dmp

Filesize
84KB

Download
memory/3124-1-0x0000000002EA0000-0x0000000002FA0000-memory.dmp

Filesize
1024KB

Download
memory/3124-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/3124-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3124-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3124-9-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/3124-8-0x0000000000400000-0x0000000002B74000-memory.dmp

Filesize
39.5MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads