tofsee | 4c02eaf72087d84609c6a3ab2b1f937b9610cfce1c088480efef333c788f2115

General

Target

JaffaCakes118_4c02eaf72087d84609c6a3ab2b1f937b9610cfce1c088480efef333c788f2115.exe
Size

164KB
MD5

d649d038cbf42befb5e8a84c0c0409df
SHA1

cb7c56f0e704a6d0ea3e30cf3cc5b3db5b14a617
SHA256

4c02eaf72087d84609c6a3ab2b1f937b9610cfce1c088480efef333c788f2115
SHA512

4ee8b9a76e54a7b4cfbb1e32f61095ba4dac4a046612f263ca7bb63d302660f7f8c05c6f11c038f62d6541919f37cb8ac5b7b205ecd05a072c8e8dba956fe4ed
SSDEEP

3072:xhqN3KT33532RxJqf6Is57HoWx3xS9H6S:xsNE33532tjEa

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

defeatwax.ru

refabyd.info

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
4560	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\yyqlqkct\ImagePath = "C:\\Windows\\SysWOW64\\yyqlqkct\\gwrdxjnf.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-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	JaffaCakes118_4c02eaf72087d84609c6a3ab2b1f937b9610cfce1c088480efef333c788f2115.exe

Deletes itself 1 IoCs

pid	Process
1500	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4476	gwrdxjnf.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4476 set thread context of 1500	4476	gwrdxjnf.exe	101

Launches sc.exe 3 IoCs

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

pid	Process
1556	sc.exe
1964	sc.exe
1188	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 queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
4932	4544	WerFault.exe	82
5096	4476	WerFault.exe	94

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	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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	gwrdxjnf.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_4c02eaf72087d84609c6a3ab2b1f937b9610cfce1c088480efef333c788f2115.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4544 wrote to memory of 2424	4544	JaffaCakes118_4c02eaf72087d84609c6a3ab2b1f937b9610cfce1c088480efef333c788f2115.exe	83
PID 4544 wrote to memory of 2424	4544	JaffaCakes118_4c02eaf72087d84609c6a3ab2b1f937b9610cfce1c088480efef333c788f2115.exe	83
PID 4544 wrote to memory of 2424	4544	JaffaCakes118_4c02eaf72087d84609c6a3ab2b1f937b9610cfce1c088480efef333c788f2115.exe	83
PID 4544 wrote to memory of 3500	4544	JaffaCakes118_4c02eaf72087d84609c6a3ab2b1f937b9610cfce1c088480efef333c788f2115.exe	85
PID 4544 wrote to memory of 3500	4544	JaffaCakes118_4c02eaf72087d84609c6a3ab2b1f937b9610cfce1c088480efef333c788f2115.exe	85
PID 4544 wrote to memory of 3500	4544	JaffaCakes118_4c02eaf72087d84609c6a3ab2b1f937b9610cfce1c088480efef333c788f2115.exe	85
PID 4544 wrote to memory of 1556	4544	JaffaCakes118_4c02eaf72087d84609c6a3ab2b1f937b9610cfce1c088480efef333c788f2115.exe	88
PID 4544 wrote to memory of 1556	4544	JaffaCakes118_4c02eaf72087d84609c6a3ab2b1f937b9610cfce1c088480efef333c788f2115.exe	88
PID 4544 wrote to memory of 1556	4544	JaffaCakes118_4c02eaf72087d84609c6a3ab2b1f937b9610cfce1c088480efef333c788f2115.exe	88
PID 4544 wrote to memory of 1964	4544	JaffaCakes118_4c02eaf72087d84609c6a3ab2b1f937b9610cfce1c088480efef333c788f2115.exe	90
PID 4544 wrote to memory of 1964	4544	JaffaCakes118_4c02eaf72087d84609c6a3ab2b1f937b9610cfce1c088480efef333c788f2115.exe	90
PID 4544 wrote to memory of 1964	4544	JaffaCakes118_4c02eaf72087d84609c6a3ab2b1f937b9610cfce1c088480efef333c788f2115.exe	90
PID 4544 wrote to memory of 1188	4544	JaffaCakes118_4c02eaf72087d84609c6a3ab2b1f937b9610cfce1c088480efef333c788f2115.exe	92
PID 4544 wrote to memory of 1188	4544	JaffaCakes118_4c02eaf72087d84609c6a3ab2b1f937b9610cfce1c088480efef333c788f2115.exe	92
PID 4544 wrote to memory of 1188	4544	JaffaCakes118_4c02eaf72087d84609c6a3ab2b1f937b9610cfce1c088480efef333c788f2115.exe	92
PID 4544 wrote to memory of 4560	4544	JaffaCakes118_4c02eaf72087d84609c6a3ab2b1f937b9610cfce1c088480efef333c788f2115.exe	95
PID 4544 wrote to memory of 4560	4544	JaffaCakes118_4c02eaf72087d84609c6a3ab2b1f937b9610cfce1c088480efef333c788f2115.exe	95
PID 4544 wrote to memory of 4560	4544	JaffaCakes118_4c02eaf72087d84609c6a3ab2b1f937b9610cfce1c088480efef333c788f2115.exe	95
PID 4476 wrote to memory of 1500	4476	gwrdxjnf.exe	101
PID 4476 wrote to memory of 1500	4476	gwrdxjnf.exe	101
PID 4476 wrote to memory of 1500	4476	gwrdxjnf.exe	101
PID 4476 wrote to memory of 1500	4476	gwrdxjnf.exe	101
PID 4476 wrote to memory of 1500	4476	gwrdxjnf.exe	101

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4c02eaf72087d84609c6a3ab2b1f937b9610cfce1c088480efef333c788f2115.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4c02eaf72087d84609c6a3ab2b1f937b9610cfce1c088480efef333c788f2115.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4544
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\yyqlqkct\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2424
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\gwrdxjnf.exe" C:\Windows\SysWOW64\yyqlqkct\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3500
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create yyqlqkct binPath= "C:\Windows\SysWOW64\yyqlqkct\gwrdxjnf.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4c02eaf72087d84609c6a3ab2b1f937b9610cfce1c088480efef333c788f2115.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1556
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description yyqlqkct "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1964
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start yyqlqkct
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1188
- 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:4560
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4544 -s 660
  2⤵
  - Program crash
  PID:4932

C:\Windows\SysWOW64\yyqlqkct\gwrdxjnf.exe
C:\Windows\SysWOW64\yyqlqkct\gwrdxjnf.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4c02eaf72087d84609c6a3ab2b1f937b9610cfce1c088480efef333c788f2115.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4476
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1500
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4476 -s 512
  2⤵
  - Program crash
  PID:5096

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 4544 -ip 4544
1⤵
PID:3068

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 4476 -ip 4476
1⤵
PID:5024

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\gwrdxjnf.exe

Filesize
10.6MB

MD5
6e7208a38d587696e92463b4cb77e377

SHA1
c57fe9412de790eca8d609f676dae2737c2d7823

SHA256
a288c0925ffdaed77a165e979a867dc518f070ea0700d897a60736ebf811f0f2

SHA512
e0e93589a9c7421a975e42e5637ab103e556376dee9ea0e5016e338586316cc651db0e71db388c2d7ce79bef348c18edf250677af574e12779e89963fb8d0612

Download Submit
memory/1500-14-0x0000000000AB0000-0x0000000000AC5000-memory.dmp

Filesize
84KB

Download
memory/1500-18-0x0000000000AB0000-0x0000000000AC5000-memory.dmp

Filesize
84KB

Download
memory/1500-16-0x0000000000AB0000-0x0000000000AC5000-memory.dmp

Filesize
84KB

Download
memory/4476-13-0x0000000000400000-0x00000000004AF000-memory.dmp

Filesize
700KB

Download
memory/4476-11-0x0000000000400000-0x00000000004AF000-memory.dmp

Filesize
700KB

Download
memory/4476-12-0x0000000000400000-0x00000000004AF000-memory.dmp

Filesize
700KB

Download
memory/4476-17-0x0000000000400000-0x00000000004AF000-memory.dmp

Filesize
700KB

Download
memory/4544-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4544-9-0x00000000021F0000-0x0000000002203000-memory.dmp

Filesize
76KB

Download
memory/4544-8-0x0000000000400000-0x00000000004AF000-memory.dmp

Filesize
700KB

Download
memory/4544-1-0x0000000000610000-0x0000000000710000-memory.dmp

Filesize
1024KB

Download
memory/4544-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4544-2-0x00000000021F0000-0x0000000002203000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads