tofsee | c64e2ef9ab2c17bff92fab62479fbf3ce1724c4e8f5f9a2bd9f4c40113f433a8

General

Target

JaffaCakes118_c64e2ef9ab2c17bff92fab62479fbf3ce1724c4e8f5f9a2bd9f4c40113f433a8.exe
Size

325KB
MD5

424b5c8d8ecadd9049cefd26188984f7
SHA1

b257341ca384e216ce6f286184606bb431d14217
SHA256

c64e2ef9ab2c17bff92fab62479fbf3ce1724c4e8f5f9a2bd9f4c40113f433a8
SHA512

4334351e2f789d41763481e0e851175be92ee275faca9af5e33592d9e054dbcbd8e3deeacb2f5000872971e2cad4d19e1763360a47025c7f5626528a273993ae
SSDEEP

6144:erHiD3oQZ2HobNAJIZMVfwoYFWwGGeolAHPs53HpZg9qR:+CD3F4OWwGGeolAk53f

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
5020	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\xkgyxzws\ImagePath = "C:\\Windows\\SysWOW64\\xkgyxzws\\tpeejqwn.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-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation	JaffaCakes118_c64e2ef9ab2c17bff92fab62479fbf3ce1724c4e8f5f9a2bd9f4c40113f433a8.exe

Deletes itself 1 IoCs

pid	Process
2556	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1344	tpeejqwn.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1344 set thread context of 2556	1344	tpeejqwn.exe	98

Launches sc.exe 3 IoCs

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

pid	Process
4436	sc.exe
1060	sc.exe
1576	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
4044	4520	WerFault.exe	81
4364	1344	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_c64e2ef9ab2c17bff92fab62479fbf3ce1724c4e8f5f9a2bd9f4c40113f433a8.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	tpeejqwn.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	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 4520 wrote to memory of 3620	4520	JaffaCakes118_c64e2ef9ab2c17bff92fab62479fbf3ce1724c4e8f5f9a2bd9f4c40113f433a8.exe	82
PID 4520 wrote to memory of 3620	4520	JaffaCakes118_c64e2ef9ab2c17bff92fab62479fbf3ce1724c4e8f5f9a2bd9f4c40113f433a8.exe	82
PID 4520 wrote to memory of 3620	4520	JaffaCakes118_c64e2ef9ab2c17bff92fab62479fbf3ce1724c4e8f5f9a2bd9f4c40113f433a8.exe	82
PID 4520 wrote to memory of 1940	4520	JaffaCakes118_c64e2ef9ab2c17bff92fab62479fbf3ce1724c4e8f5f9a2bd9f4c40113f433a8.exe	84
PID 4520 wrote to memory of 1940	4520	JaffaCakes118_c64e2ef9ab2c17bff92fab62479fbf3ce1724c4e8f5f9a2bd9f4c40113f433a8.exe	84
PID 4520 wrote to memory of 1940	4520	JaffaCakes118_c64e2ef9ab2c17bff92fab62479fbf3ce1724c4e8f5f9a2bd9f4c40113f433a8.exe	84
PID 4520 wrote to memory of 4436	4520	JaffaCakes118_c64e2ef9ab2c17bff92fab62479fbf3ce1724c4e8f5f9a2bd9f4c40113f433a8.exe	86
PID 4520 wrote to memory of 4436	4520	JaffaCakes118_c64e2ef9ab2c17bff92fab62479fbf3ce1724c4e8f5f9a2bd9f4c40113f433a8.exe	86
PID 4520 wrote to memory of 4436	4520	JaffaCakes118_c64e2ef9ab2c17bff92fab62479fbf3ce1724c4e8f5f9a2bd9f4c40113f433a8.exe	86
PID 4520 wrote to memory of 1060	4520	JaffaCakes118_c64e2ef9ab2c17bff92fab62479fbf3ce1724c4e8f5f9a2bd9f4c40113f433a8.exe	88
PID 4520 wrote to memory of 1060	4520	JaffaCakes118_c64e2ef9ab2c17bff92fab62479fbf3ce1724c4e8f5f9a2bd9f4c40113f433a8.exe	88
PID 4520 wrote to memory of 1060	4520	JaffaCakes118_c64e2ef9ab2c17bff92fab62479fbf3ce1724c4e8f5f9a2bd9f4c40113f433a8.exe	88
PID 4520 wrote to memory of 1576	4520	JaffaCakes118_c64e2ef9ab2c17bff92fab62479fbf3ce1724c4e8f5f9a2bd9f4c40113f433a8.exe	90
PID 4520 wrote to memory of 1576	4520	JaffaCakes118_c64e2ef9ab2c17bff92fab62479fbf3ce1724c4e8f5f9a2bd9f4c40113f433a8.exe	90
PID 4520 wrote to memory of 1576	4520	JaffaCakes118_c64e2ef9ab2c17bff92fab62479fbf3ce1724c4e8f5f9a2bd9f4c40113f433a8.exe	90
PID 4520 wrote to memory of 5020	4520	JaffaCakes118_c64e2ef9ab2c17bff92fab62479fbf3ce1724c4e8f5f9a2bd9f4c40113f433a8.exe	93
PID 4520 wrote to memory of 5020	4520	JaffaCakes118_c64e2ef9ab2c17bff92fab62479fbf3ce1724c4e8f5f9a2bd9f4c40113f433a8.exe	93
PID 4520 wrote to memory of 5020	4520	JaffaCakes118_c64e2ef9ab2c17bff92fab62479fbf3ce1724c4e8f5f9a2bd9f4c40113f433a8.exe	93
PID 1344 wrote to memory of 2556	1344	tpeejqwn.exe	98
PID 1344 wrote to memory of 2556	1344	tpeejqwn.exe	98
PID 1344 wrote to memory of 2556	1344	tpeejqwn.exe	98
PID 1344 wrote to memory of 2556	1344	tpeejqwn.exe	98
PID 1344 wrote to memory of 2556	1344	tpeejqwn.exe	98

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_c64e2ef9ab2c17bff92fab62479fbf3ce1724c4e8f5f9a2bd9f4c40113f433a8.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_c64e2ef9ab2c17bff92fab62479fbf3ce1724c4e8f5f9a2bd9f4c40113f433a8.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4520
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\xkgyxzws\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3620
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\tpeejqwn.exe" C:\Windows\SysWOW64\xkgyxzws\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1940
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create xkgyxzws binPath= "C:\Windows\SysWOW64\xkgyxzws\tpeejqwn.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_c64e2ef9ab2c17bff92fab62479fbf3ce1724c4e8f5f9a2bd9f4c40113f433a8.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4436
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description xkgyxzws "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1060
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start xkgyxzws
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1576
- 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:5020
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4520 -s 1328
  2⤵
  - Program crash
  PID:4044

C:\Windows\SysWOW64\xkgyxzws\tpeejqwn.exe
C:\Windows\SysWOW64\xkgyxzws\tpeejqwn.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_c64e2ef9ab2c17bff92fab62479fbf3ce1724c4e8f5f9a2bd9f4c40113f433a8.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1344
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2556
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1344 -s 532
  2⤵
  - Program crash
  PID:4364

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 4520 -ip 4520
1⤵
PID:2976

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 1344 -ip 1344
1⤵
PID:3100

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\tpeejqwn.exe

Filesize
14.7MB

MD5
38c3f24720f722f39cfc1824df06b4b1

SHA1
f4d212cb2fca429e1442f235174ecde8ce375630

SHA256
b70ec7bef9ce15bf798cde8a8ef5360d07589d44da201132720c9c4609f550ab

SHA512
df6bd77297b1242580deb17d27d5cf3e927ee80fc612e98120af825a99f147296bed3e0e1da2bf11e8b47081f342554f58547752863386d2125b66f79288094f

Download Submit
memory/1344-15-0x0000000000400000-0x00000000023A8000-memory.dmp

Filesize
31.7MB

Download
memory/2556-11-0x0000000000540000-0x0000000000555000-memory.dmp

Filesize
84KB

Download
memory/2556-13-0x0000000000540000-0x0000000000555000-memory.dmp

Filesize
84KB

Download
memory/2556-14-0x0000000000540000-0x0000000000555000-memory.dmp

Filesize
84KB

Download
memory/4520-1-0x00000000024B0000-0x00000000025B0000-memory.dmp

Filesize
1024KB

Download
memory/4520-2-0x0000000002490000-0x00000000024A3000-memory.dmp

Filesize
76KB

Download
memory/4520-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4520-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4520-8-0x0000000002490000-0x00000000024A3000-memory.dmp

Filesize
76KB

Download
memory/4520-7-0x0000000000400000-0x00000000023A8000-memory.dmp

Filesize
31.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads