tofsee | e11157730420c038e6702247490af3b14b33fd80f0f38bca6177a19ec59bb010

General

Target

814db4af086ab24f5846ff14a3ab4581_JaffaCakes118.exe
Size

11.7MB
MD5

814db4af086ab24f5846ff14a3ab4581
SHA1

2f18d1dbe8f9318264b7ac6c4331394f5fa7679d
SHA256

e11157730420c038e6702247490af3b14b33fd80f0f38bca6177a19ec59bb010
SHA512

b3132a415fce312efae55a27894305513ef9f33f8506e3f26dad4c953fc9185f50a577cb775e9d769c7239fce67fc0d16ccb865d4021d77e3cec72c15ce3f6ab
SSDEEP

12288:/1vfanyphPu2xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFZ:9vfEyph

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

Processes:

netsh.exe

pid process

2248 netsh.exe

pid	process
2248	netsh.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

svchost.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\ibfaiwmv\ImagePath = "C:\\Windows\\SysWOW64\\ibfaiwmv\\uthjxuvn.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

Processes:

814db4af086ab24f5846ff14a3ab4581_JaffaCakes118.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation	814db4af086ab24f5846ff14a3ab4581_JaffaCakes118.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

2612 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

uthjxuvn.exe

pid process

4360 uthjxuvn.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

uthjxuvn.exe

description pid process target process

PID 4360 set thread context of 2612 4360 uthjxuvn.exe svchost.exe
Launches sc.exe 3 IoCs
Sc.exe is a Windows utlilty to control services on the system.

Processes:

sc.exesc.exesc.exe

pid process

3184 sc.exe
4248 sc.exe
728 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2612	svchost.exe

pid	process
4360	uthjxuvn.exe

description	pid	process	target process
PID 4360 set thread context of 2612	4360	uthjxuvn.exe	svchost.exe

pid	process
3184	sc.exe
4248	sc.exe
728	sc.exe

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

Processes:

netsh.exe

description	ioc	process
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

Program crash 2 IoCs

Processes:

WerFault.exeWerFault.exe

pid pid_target process target process

4596 3448 WerFault.exe 814db4af086ab24f5846ff14a3ab4581_JaffaCakes118.exe
1916 4360 WerFault.exe uthjxuvn.exe

pid	pid_target	process	target process
4596	3448	WerFault.exe	814db4af086ab24f5846ff14a3ab4581_JaffaCakes118.exe
1916	4360	WerFault.exe	uthjxuvn.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

Processes:

cmd.exesc.exenetsh.execmd.exesc.exesc.exeuthjxuvn.exesvchost.exe814db4af086ab24f5846ff14a3ab4581_JaffaCakes118.exe

description	ioc	process
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	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	uthjxuvn.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	814db4af086ab24f5846ff14a3ab4581_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

814db4af086ab24f5846ff14a3ab4581_JaffaCakes118.exeuthjxuvn.exe

description	pid	process	target process
PID 3448 wrote to memory of 3288	3448	814db4af086ab24f5846ff14a3ab4581_JaffaCakes118.exe	cmd.exe
PID 3448 wrote to memory of 3288	3448	814db4af086ab24f5846ff14a3ab4581_JaffaCakes118.exe	cmd.exe
PID 3448 wrote to memory of 3288	3448	814db4af086ab24f5846ff14a3ab4581_JaffaCakes118.exe	cmd.exe
PID 3448 wrote to memory of 2800	3448	814db4af086ab24f5846ff14a3ab4581_JaffaCakes118.exe	cmd.exe
PID 3448 wrote to memory of 2800	3448	814db4af086ab24f5846ff14a3ab4581_JaffaCakes118.exe	cmd.exe
PID 3448 wrote to memory of 2800	3448	814db4af086ab24f5846ff14a3ab4581_JaffaCakes118.exe	cmd.exe
PID 3448 wrote to memory of 3184	3448	814db4af086ab24f5846ff14a3ab4581_JaffaCakes118.exe	sc.exe
PID 3448 wrote to memory of 3184	3448	814db4af086ab24f5846ff14a3ab4581_JaffaCakes118.exe	sc.exe
PID 3448 wrote to memory of 3184	3448	814db4af086ab24f5846ff14a3ab4581_JaffaCakes118.exe	sc.exe
PID 3448 wrote to memory of 4248	3448	814db4af086ab24f5846ff14a3ab4581_JaffaCakes118.exe	sc.exe
PID 3448 wrote to memory of 4248	3448	814db4af086ab24f5846ff14a3ab4581_JaffaCakes118.exe	sc.exe
PID 3448 wrote to memory of 4248	3448	814db4af086ab24f5846ff14a3ab4581_JaffaCakes118.exe	sc.exe
PID 3448 wrote to memory of 728	3448	814db4af086ab24f5846ff14a3ab4581_JaffaCakes118.exe	sc.exe
PID 3448 wrote to memory of 728	3448	814db4af086ab24f5846ff14a3ab4581_JaffaCakes118.exe	sc.exe
PID 3448 wrote to memory of 728	3448	814db4af086ab24f5846ff14a3ab4581_JaffaCakes118.exe	sc.exe
PID 3448 wrote to memory of 2248	3448	814db4af086ab24f5846ff14a3ab4581_JaffaCakes118.exe	netsh.exe
PID 3448 wrote to memory of 2248	3448	814db4af086ab24f5846ff14a3ab4581_JaffaCakes118.exe	netsh.exe
PID 3448 wrote to memory of 2248	3448	814db4af086ab24f5846ff14a3ab4581_JaffaCakes118.exe	netsh.exe
PID 4360 wrote to memory of 2612	4360	uthjxuvn.exe	svchost.exe
PID 4360 wrote to memory of 2612	4360	uthjxuvn.exe	svchost.exe
PID 4360 wrote to memory of 2612	4360	uthjxuvn.exe	svchost.exe
PID 4360 wrote to memory of 2612	4360	uthjxuvn.exe	svchost.exe
PID 4360 wrote to memory of 2612	4360	uthjxuvn.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\814db4af086ab24f5846ff14a3ab4581_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\814db4af086ab24f5846ff14a3ab4581_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3448
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ibfaiwmv\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3288
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\uthjxuvn.exe" C:\Windows\SysWOW64\ibfaiwmv\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2800
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create ibfaiwmv binPath= "C:\Windows\SysWOW64\ibfaiwmv\uthjxuvn.exe /d\"C:\Users\Admin\AppData\Local\Temp\814db4af086ab24f5846ff14a3ab4581_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3184
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description ibfaiwmv "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4248
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start ibfaiwmv
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:728
- 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:2248
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3448 -s 1036
  2⤵
  - Program crash
  PID:4596

C:\Windows\SysWOW64\ibfaiwmv\uthjxuvn.exe
C:\Windows\SysWOW64\ibfaiwmv\uthjxuvn.exe /d"C:\Users\Admin\AppData\Local\Temp\814db4af086ab24f5846ff14a3ab4581_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4360
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2612
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4360 -s 512
  2⤵
  - Program crash
  PID:1916

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 464 -p 3448 -ip 3448
1⤵
PID:2836

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 4360 -ip 4360
1⤵
PID:4544

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\uthjxuvn.exe

Filesize
13.8MB

MD5
3946a13d145579ef7f4a0a0674ddb1c9

SHA1
334d5dfa3474cff3cae2d0a06bc0e6a0cd2c0182

SHA256
9e4428131756daf9f1f673427a55b172922841602713113b23d69dabad40cd02

SHA512
21703d09d7595e86bfc3c34dcc40152030dc6999a44a2c90fd8aa8ef3f0e5928f443302437de0208ef591971e838a6f0e52a8fb2f386fb1da91c819e4a4beec1

Download Submit
memory/2612-11-0x00000000003D0000-0x00000000003E5000-memory.dmp

Filesize
84KB

Download
memory/2612-13-0x00000000003D0000-0x00000000003E5000-memory.dmp

Filesize
84KB

Download
memory/2612-14-0x00000000003D0000-0x00000000003E5000-memory.dmp

Filesize
84KB

Download
memory/3448-1-0x0000000003540000-0x0000000003640000-memory.dmp

Filesize
1024KB

Download
memory/3448-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/3448-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3448-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3448-8-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/3448-7-0x0000000000400000-0x0000000003379000-memory.dmp

Filesize
47.5MB

Download
memory/4360-15-0x0000000000400000-0x0000000003379000-memory.dmp

Filesize
47.5MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads