tofsee | 0f21412ef78f4e467683b52b8936dbb8214ac36cd867bc6c0b665cf602b8b14b

General

Target

3fa00b58aed423cd52e2236888c40cb7_JaffaCakes118.exe
Size

12.6MB
MD5

3fa00b58aed423cd52e2236888c40cb7
SHA1

0284dc151760cf6bd327ff4eff80b5866128228d
SHA256

0f21412ef78f4e467683b52b8936dbb8214ac36cd867bc6c0b665cf602b8b14b
SHA512

df719c5cde89fd90b7042450720d370a4fd9c251e0ad6bdc69c60a50a9a206df717502728555b9466f5fdaa9a3d18e0f8a65053e121c8143cd03e6b57231b3ce
SSDEEP

24576:ikVGNgVLxm55555555555555555555555555555555555555555555555555555L:/VogVq

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan upx

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
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
4404	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\cmajojb\ImagePath = "C:\\Windows\\SysWOW64\\cmajojb\\wblgamjl.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-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation	3fa00b58aed423cd52e2236888c40cb7_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
2284	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
464	wblgamjl.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 464 set thread context of 2284	464	wblgamjl.exe	97

UPX packed file 2 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/5072-2-0x0000000000400000-0x0000000005167000-memory.dmp	upx
behavioral2/files/0x000a000000023c10-6.dat	upx

Launches sc.exe 3 IoCs

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

pid	Process
4224	sc.exe
5104	sc.exe
3172	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
4208	464	WerFault.exe	96
636	5072	WerFault.exe	84

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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wblgamjl.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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	3fa00b58aed423cd52e2236888c40cb7_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 5072 wrote to memory of 2316	5072	3fa00b58aed423cd52e2236888c40cb7_JaffaCakes118.exe	86
PID 5072 wrote to memory of 2316	5072	3fa00b58aed423cd52e2236888c40cb7_JaffaCakes118.exe	86
PID 5072 wrote to memory of 2316	5072	3fa00b58aed423cd52e2236888c40cb7_JaffaCakes118.exe	86
PID 5072 wrote to memory of 1632	5072	3fa00b58aed423cd52e2236888c40cb7_JaffaCakes118.exe	88
PID 5072 wrote to memory of 1632	5072	3fa00b58aed423cd52e2236888c40cb7_JaffaCakes118.exe	88
PID 5072 wrote to memory of 1632	5072	3fa00b58aed423cd52e2236888c40cb7_JaffaCakes118.exe	88
PID 5072 wrote to memory of 5104	5072	3fa00b58aed423cd52e2236888c40cb7_JaffaCakes118.exe	90
PID 5072 wrote to memory of 5104	5072	3fa00b58aed423cd52e2236888c40cb7_JaffaCakes118.exe	90
PID 5072 wrote to memory of 5104	5072	3fa00b58aed423cd52e2236888c40cb7_JaffaCakes118.exe	90
PID 5072 wrote to memory of 3172	5072	3fa00b58aed423cd52e2236888c40cb7_JaffaCakes118.exe	92
PID 5072 wrote to memory of 3172	5072	3fa00b58aed423cd52e2236888c40cb7_JaffaCakes118.exe	92
PID 5072 wrote to memory of 3172	5072	3fa00b58aed423cd52e2236888c40cb7_JaffaCakes118.exe	92
PID 5072 wrote to memory of 4224	5072	3fa00b58aed423cd52e2236888c40cb7_JaffaCakes118.exe	94
PID 5072 wrote to memory of 4224	5072	3fa00b58aed423cd52e2236888c40cb7_JaffaCakes118.exe	94
PID 5072 wrote to memory of 4224	5072	3fa00b58aed423cd52e2236888c40cb7_JaffaCakes118.exe	94
PID 464 wrote to memory of 2284	464	wblgamjl.exe	97
PID 464 wrote to memory of 2284	464	wblgamjl.exe	97
PID 464 wrote to memory of 2284	464	wblgamjl.exe	97
PID 464 wrote to memory of 2284	464	wblgamjl.exe	97
PID 464 wrote to memory of 2284	464	wblgamjl.exe	97
PID 5072 wrote to memory of 4404	5072	3fa00b58aed423cd52e2236888c40cb7_JaffaCakes118.exe	100
PID 5072 wrote to memory of 4404	5072	3fa00b58aed423cd52e2236888c40cb7_JaffaCakes118.exe	100
PID 5072 wrote to memory of 4404	5072	3fa00b58aed423cd52e2236888c40cb7_JaffaCakes118.exe	100

C:\Users\Admin\AppData\Local\Temp\3fa00b58aed423cd52e2236888c40cb7_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\3fa00b58aed423cd52e2236888c40cb7_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5072
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\cmajojb\
  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\wblgamjl.exe" C:\Windows\SysWOW64\cmajojb\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1632
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create cmajojb binPath= "C:\Windows\SysWOW64\cmajojb\wblgamjl.exe /d\"C:\Users\Admin\AppData\Local\Temp\3fa00b58aed423cd52e2236888c40cb7_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:5104
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description cmajojb "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3172
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start cmajojb
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4224
- 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:4404
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 5072 -s 1048
  2⤵
  - Program crash
  PID:636

C:\Windows\SysWOW64\cmajojb\wblgamjl.exe
C:\Windows\SysWOW64\cmajojb\wblgamjl.exe /d"C:\Users\Admin\AppData\Local\Temp\3fa00b58aed423cd52e2236888c40cb7_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:464
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2284
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 464 -s 532
  2⤵
  - Program crash
  PID:4208

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 464 -ip 464
1⤵
PID:2780

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 5072 -ip 5072
1⤵
PID:632

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\wblgamjl.exe

Filesize
14.4MB

MD5
29ed9b974d3ca7c1072e0b9539283590

SHA1
15764c2854b77104a7f92b7761eaa2fbd64b1f48

SHA256
1eb2a85e49140367d888962568f87fb9dfc6e14437bdb6e74c8b0ef4b00f3294

SHA512
0269aa89ef771f9a55f36c9abf6a782177836d3caf43b65c89f5cc0715e7c0dbaef6971ac040e2670859cab07e29af13db1c32f5b87ed725460a39c8fc9375ea

Download Submit
memory/464-11-0x0000000000400000-0x0000000005167000-memory.dmp

Filesize
77.4MB

Download
memory/2284-9-0x0000000000800000-0x0000000000815000-memory.dmp

Filesize
84KB

Download
memory/2284-15-0x0000000000800000-0x0000000000815000-memory.dmp

Filesize
84KB

Download
memory/2284-16-0x0000000000800000-0x0000000000815000-memory.dmp

Filesize
84KB

Download
memory/5072-2-0x0000000000400000-0x0000000005167000-memory.dmp

Filesize
77.4MB

Download
memory/5072-4-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/5072-3-0x00000000052C0000-0x00000000052D3000-memory.dmp

Filesize
76KB

Download
memory/5072-5-0x0000000000400000-0x0000000005167000-memory.dmp

Filesize
77.4MB

Download
memory/5072-14-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/5072-13-0x0000000000400000-0x0000000005167000-memory.dmp

Filesize
77.4MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads