tofsee | 25b5562d7367c5d6b3ba1e972f7dc163d8a420f828f517f6f7d12eb0ba503605

General

Target

JaffaCakes118_ea6b8a444ac84e9af4e879ce16c37ff2.exe
Size

14.7MB
MD5

ea6b8a444ac84e9af4e879ce16c37ff2
SHA1

8aa368fbb8702c4e23e0ea8066efb4b4f6ab93c0
SHA256

25b5562d7367c5d6b3ba1e972f7dc163d8a420f828f517f6f7d12eb0ba503605
SHA512

dff566b5e453b332388c0657de12cec1d0da88dd48542825e8bb3ee340176b91bc662451a622349e16d1b20f0eb1b23d7681185d9e6556e790f5b6c975d1fd48
SSDEEP

12288:iz+wSUpBMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMU:iz8

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
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
4648	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\jopksoxz\ImagePath = "C:\\Windows\\SysWOW64\\jopksoxz\\srhdkgl.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_ea6b8a444ac84e9af4e879ce16c37ff2.exe

Deletes itself 1 IoCs

pid	Process
3208	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
212	srhdkgl.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 212 set thread context of 3208	212	srhdkgl.exe	94

Launches sc.exe 3 IoCs

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

pid	Process
4928	sc.exe
4380	sc.exe
2476	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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.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	srhdkgl.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_ea6b8a444ac84e9af4e879ce16c37ff2.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4276 wrote to memory of 3040	4276	JaffaCakes118_ea6b8a444ac84e9af4e879ce16c37ff2.exe	83
PID 4276 wrote to memory of 3040	4276	JaffaCakes118_ea6b8a444ac84e9af4e879ce16c37ff2.exe	83
PID 4276 wrote to memory of 3040	4276	JaffaCakes118_ea6b8a444ac84e9af4e879ce16c37ff2.exe	83
PID 4276 wrote to memory of 1996	4276	JaffaCakes118_ea6b8a444ac84e9af4e879ce16c37ff2.exe	85
PID 4276 wrote to memory of 1996	4276	JaffaCakes118_ea6b8a444ac84e9af4e879ce16c37ff2.exe	85
PID 4276 wrote to memory of 1996	4276	JaffaCakes118_ea6b8a444ac84e9af4e879ce16c37ff2.exe	85
PID 4276 wrote to memory of 2476	4276	JaffaCakes118_ea6b8a444ac84e9af4e879ce16c37ff2.exe	87
PID 4276 wrote to memory of 2476	4276	JaffaCakes118_ea6b8a444ac84e9af4e879ce16c37ff2.exe	87
PID 4276 wrote to memory of 2476	4276	JaffaCakes118_ea6b8a444ac84e9af4e879ce16c37ff2.exe	87
PID 4276 wrote to memory of 4928	4276	JaffaCakes118_ea6b8a444ac84e9af4e879ce16c37ff2.exe	89
PID 4276 wrote to memory of 4928	4276	JaffaCakes118_ea6b8a444ac84e9af4e879ce16c37ff2.exe	89
PID 4276 wrote to memory of 4928	4276	JaffaCakes118_ea6b8a444ac84e9af4e879ce16c37ff2.exe	89
PID 4276 wrote to memory of 4380	4276	JaffaCakes118_ea6b8a444ac84e9af4e879ce16c37ff2.exe	91
PID 4276 wrote to memory of 4380	4276	JaffaCakes118_ea6b8a444ac84e9af4e879ce16c37ff2.exe	91
PID 4276 wrote to memory of 4380	4276	JaffaCakes118_ea6b8a444ac84e9af4e879ce16c37ff2.exe	91
PID 212 wrote to memory of 3208	212	srhdkgl.exe	94
PID 212 wrote to memory of 3208	212	srhdkgl.exe	94
PID 212 wrote to memory of 3208	212	srhdkgl.exe	94
PID 212 wrote to memory of 3208	212	srhdkgl.exe	94
PID 212 wrote to memory of 3208	212	srhdkgl.exe	94
PID 4276 wrote to memory of 4648	4276	JaffaCakes118_ea6b8a444ac84e9af4e879ce16c37ff2.exe	95
PID 4276 wrote to memory of 4648	4276	JaffaCakes118_ea6b8a444ac84e9af4e879ce16c37ff2.exe	95
PID 4276 wrote to memory of 4648	4276	JaffaCakes118_ea6b8a444ac84e9af4e879ce16c37ff2.exe	95

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_ea6b8a444ac84e9af4e879ce16c37ff2.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_ea6b8a444ac84e9af4e879ce16c37ff2.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4276
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\jopksoxz\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3040
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\srhdkgl.exe" C:\Windows\SysWOW64\jopksoxz\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1996
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create jopksoxz binPath= "C:\Windows\SysWOW64\jopksoxz\srhdkgl.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_ea6b8a444ac84e9af4e879ce16c37ff2.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2476
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description jopksoxz "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4928
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start jopksoxz
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4380
- 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:4648

C:\Windows\SysWOW64\jopksoxz\srhdkgl.exe
C:\Windows\SysWOW64\jopksoxz\srhdkgl.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_ea6b8a444ac84e9af4e879ce16c37ff2.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:212
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3208

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\srhdkgl.exe

Filesize
13.5MB

MD5
bf37a743d1a2473f0fc639121e91a6c8

SHA1
0c62e427fff616fdd90e51f7417e00f49c11f3f0

SHA256
e7660665f5b0c2e44e2cc43e72b4d1f135390144ae9ffca50837678148613a4a

SHA512
06167e3aa3735d7342a9ef06a1c94b622141dfb7e7835f9733c6e5420acefe538ad00e19438ec6fc297fc28d10f320ad232779bb4c88f0c383f10d7ecaca90a2

Download Submit
memory/212-16-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/212-7-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/212-15-0x000000005F000000-0x000000005F011000-memory.dmp

Filesize
68KB

Download
memory/212-9-0x0000000000680000-0x0000000000681000-memory.dmp

Filesize
4KB

Download
memory/3208-13-0x0000000000A00000-0x0000000000A15000-memory.dmp

Filesize
84KB

Download
memory/3208-10-0x0000000000A00000-0x0000000000A15000-memory.dmp

Filesize
84KB

Download
memory/3208-19-0x0000000000A00000-0x0000000000A15000-memory.dmp

Filesize
84KB

Download
memory/3208-20-0x0000000000A00000-0x0000000000A15000-memory.dmp

Filesize
84KB

Download
memory/3208-21-0x0000000000A00000-0x0000000000A15000-memory.dmp

Filesize
84KB

Download
memory/4276-1-0x0000000000B50000-0x0000000000B51000-memory.dmp

Filesize
4KB

Download
memory/4276-2-0x0000000000B60000-0x0000000000B61000-memory.dmp

Filesize
4KB

Download
memory/4276-0-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/4276-3-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/4276-17-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads