tofsee | 53a0d8df737edd824241066638b4ecc859f285e2c74e391c7c7b9dc1e1c640ce

General

Target

JaffaCakes118_53a0d8df737edd824241066638b4ecc859f285e2c74e391c7c7b9dc1e1c640ce.exe
Size

337KB
MD5

1e438cc75c27318882e50db6524f3553
SHA1

aa0ac3a45ca2fa037c81eedad6807eb480052cf7
SHA256

53a0d8df737edd824241066638b4ecc859f285e2c74e391c7c7b9dc1e1c640ce
SHA512

a43dc2e12593f61d69d33bf04bf9c91824fc7c98cad7d2c78bb7469139ad08232799eefa813999b2d06f32b18428801df0970d58ca8237115b5d66afbc690d9a
SSDEEP

6144:Ed44FG63LsU8ITQQgb4tZqlZ1YQldwxoKbLyY:iFG63LIrQguolZWQjZiLv

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
2388	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\yknbibzv\ImagePath = "C:\\Windows\\SysWOW64\\yknbibzv\\xcbzpvet.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-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation	JaffaCakes118_53a0d8df737edd824241066638b4ecc859f285e2c74e391c7c7b9dc1e1c640ce.exe

Deletes itself 1 IoCs

pid	Process
2052	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2152	xcbzpvet.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2152 set thread context of 2052	2152	xcbzpvet.exe	102

Launches sc.exe 3 IoCs

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

pid	Process
1776	sc.exe
4032	sc.exe
2952	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
5108	2208	WerFault.exe	82
3672	2152	WerFault.exe	93

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	xcbzpvet.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_53a0d8df737edd824241066638b4ecc859f285e2c74e391c7c7b9dc1e1c640ce.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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2208 wrote to memory of 2316	2208	JaffaCakes118_53a0d8df737edd824241066638b4ecc859f285e2c74e391c7c7b9dc1e1c640ce.exe	83
PID 2208 wrote to memory of 2316	2208	JaffaCakes118_53a0d8df737edd824241066638b4ecc859f285e2c74e391c7c7b9dc1e1c640ce.exe	83
PID 2208 wrote to memory of 2316	2208	JaffaCakes118_53a0d8df737edd824241066638b4ecc859f285e2c74e391c7c7b9dc1e1c640ce.exe	83
PID 2208 wrote to memory of 2320	2208	JaffaCakes118_53a0d8df737edd824241066638b4ecc859f285e2c74e391c7c7b9dc1e1c640ce.exe	85
PID 2208 wrote to memory of 2320	2208	JaffaCakes118_53a0d8df737edd824241066638b4ecc859f285e2c74e391c7c7b9dc1e1c640ce.exe	85
PID 2208 wrote to memory of 2320	2208	JaffaCakes118_53a0d8df737edd824241066638b4ecc859f285e2c74e391c7c7b9dc1e1c640ce.exe	85
PID 2208 wrote to memory of 2952	2208	JaffaCakes118_53a0d8df737edd824241066638b4ecc859f285e2c74e391c7c7b9dc1e1c640ce.exe	87
PID 2208 wrote to memory of 2952	2208	JaffaCakes118_53a0d8df737edd824241066638b4ecc859f285e2c74e391c7c7b9dc1e1c640ce.exe	87
PID 2208 wrote to memory of 2952	2208	JaffaCakes118_53a0d8df737edd824241066638b4ecc859f285e2c74e391c7c7b9dc1e1c640ce.exe	87
PID 2208 wrote to memory of 1776	2208	JaffaCakes118_53a0d8df737edd824241066638b4ecc859f285e2c74e391c7c7b9dc1e1c640ce.exe	89
PID 2208 wrote to memory of 1776	2208	JaffaCakes118_53a0d8df737edd824241066638b4ecc859f285e2c74e391c7c7b9dc1e1c640ce.exe	89
PID 2208 wrote to memory of 1776	2208	JaffaCakes118_53a0d8df737edd824241066638b4ecc859f285e2c74e391c7c7b9dc1e1c640ce.exe	89
PID 2208 wrote to memory of 4032	2208	JaffaCakes118_53a0d8df737edd824241066638b4ecc859f285e2c74e391c7c7b9dc1e1c640ce.exe	91
PID 2208 wrote to memory of 4032	2208	JaffaCakes118_53a0d8df737edd824241066638b4ecc859f285e2c74e391c7c7b9dc1e1c640ce.exe	91
PID 2208 wrote to memory of 4032	2208	JaffaCakes118_53a0d8df737edd824241066638b4ecc859f285e2c74e391c7c7b9dc1e1c640ce.exe	91
PID 2208 wrote to memory of 2388	2208	JaffaCakes118_53a0d8df737edd824241066638b4ecc859f285e2c74e391c7c7b9dc1e1c640ce.exe	94
PID 2208 wrote to memory of 2388	2208	JaffaCakes118_53a0d8df737edd824241066638b4ecc859f285e2c74e391c7c7b9dc1e1c640ce.exe	94
PID 2208 wrote to memory of 2388	2208	JaffaCakes118_53a0d8df737edd824241066638b4ecc859f285e2c74e391c7c7b9dc1e1c640ce.exe	94
PID 2152 wrote to memory of 2052	2152	xcbzpvet.exe	102
PID 2152 wrote to memory of 2052	2152	xcbzpvet.exe	102
PID 2152 wrote to memory of 2052	2152	xcbzpvet.exe	102
PID 2152 wrote to memory of 2052	2152	xcbzpvet.exe	102
PID 2152 wrote to memory of 2052	2152	xcbzpvet.exe	102

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_53a0d8df737edd824241066638b4ecc859f285e2c74e391c7c7b9dc1e1c640ce.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_53a0d8df737edd824241066638b4ecc859f285e2c74e391c7c7b9dc1e1c640ce.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2208
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\yknbibzv\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2316
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\xcbzpvet.exe" C:\Windows\SysWOW64\yknbibzv\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2320
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create yknbibzv binPath= "C:\Windows\SysWOW64\yknbibzv\xcbzpvet.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_53a0d8df737edd824241066638b4ecc859f285e2c74e391c7c7b9dc1e1c640ce.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2952
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description yknbibzv "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1776
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start yknbibzv
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4032
- 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:2388
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2208 -s 1044
  2⤵
  - Program crash
  PID:5108

C:\Windows\SysWOW64\yknbibzv\xcbzpvet.exe
C:\Windows\SysWOW64\yknbibzv\xcbzpvet.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_53a0d8df737edd824241066638b4ecc859f285e2c74e391c7c7b9dc1e1c640ce.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2152
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2052
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2152 -s 528
  2⤵
  - Program crash
  PID:3672

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 2208 -ip 2208
1⤵
PID:4608

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 2152 -ip 2152
1⤵
PID:3616

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\xcbzpvet.exe

Filesize
14.7MB

MD5
c1f1c0366c5c1aad594ccff6986aac35

SHA1
a74cdd0f4f1e9a061ca68f7f33bf7b4d3623df95

SHA256
5b9f6c5ed99bf14b7aed05fd3793d62e26ce2c8b7970dd10f3e9360122a71fc7

SHA512
f18686945e8aa56b766583fffa6e4fcabb26aa39e385ebb1f5184dcb5484dec8224ef55b616439745451b92ab1278a1512368bff6217219e909763959fab9da1

Download Submit
memory/2052-11-0x0000000001080000-0x0000000001095000-memory.dmp

Filesize
84KB

Download
memory/2052-13-0x0000000001080000-0x0000000001095000-memory.dmp

Filesize
84KB

Download
memory/2052-14-0x0000000001080000-0x0000000001095000-memory.dmp

Filesize
84KB

Download
memory/2152-15-0x0000000000400000-0x00000000023AA000-memory.dmp

Filesize
31.7MB

Download
memory/2208-1-0x0000000002710000-0x0000000002810000-memory.dmp

Filesize
1024KB

Download
memory/2208-2-0x00000000040F0000-0x0000000004103000-memory.dmp

Filesize
76KB

Download
memory/2208-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2208-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2208-8-0x00000000040F0000-0x0000000004103000-memory.dmp

Filesize
76KB

Download
memory/2208-7-0x0000000000400000-0x00000000023AA000-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