tofsee | d66f7617e71ecb9018ac3b943fec478f558413433d3219031af14dcaa590ea76

General

Target

JaffaCakes118_17d263eaaf2f1373b41cb0c3ff9aa26f.exe
Size

12.9MB
MD5

17d263eaaf2f1373b41cb0c3ff9aa26f
SHA1

11711ac0749600ae84192fc38141b205b7388399
SHA256

d66f7617e71ecb9018ac3b943fec478f558413433d3219031af14dcaa590ea76
SHA512

8f0b335a3172dc0e1d9eef54ef3f7c968d8dc9d2fba5d4931e47fd43346ff29a9b457cc40d161e1c5100d691817c0f6e8400a75fdbf62a90c00ebf439f219df3
SSDEEP

49152:8P1IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIf:

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
4720	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\cjaxywvt\ImagePath = "C:\\Windows\\SysWOW64\\cjaxywvt\\vocogacp.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_17d263eaaf2f1373b41cb0c3ff9aa26f.exe

Deletes itself 1 IoCs

pid	Process
3696	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1836	vocogacp.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1836 set thread context of 3696	1836	vocogacp.exe	102

Launches sc.exe 3 IoCs

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

pid	Process
2908	sc.exe
460	sc.exe
632	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
4620	372	WerFault.exe	83
1784	1836	WerFault.exe	95

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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_17d263eaaf2f1373b41cb0c3ff9aa26f.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	vocogacp.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	cmd.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 372 wrote to memory of 5076	372	JaffaCakes118_17d263eaaf2f1373b41cb0c3ff9aa26f.exe	84
PID 372 wrote to memory of 5076	372	JaffaCakes118_17d263eaaf2f1373b41cb0c3ff9aa26f.exe	84
PID 372 wrote to memory of 5076	372	JaffaCakes118_17d263eaaf2f1373b41cb0c3ff9aa26f.exe	84
PID 372 wrote to memory of 212	372	JaffaCakes118_17d263eaaf2f1373b41cb0c3ff9aa26f.exe	86
PID 372 wrote to memory of 212	372	JaffaCakes118_17d263eaaf2f1373b41cb0c3ff9aa26f.exe	86
PID 372 wrote to memory of 212	372	JaffaCakes118_17d263eaaf2f1373b41cb0c3ff9aa26f.exe	86
PID 372 wrote to memory of 2908	372	JaffaCakes118_17d263eaaf2f1373b41cb0c3ff9aa26f.exe	89
PID 372 wrote to memory of 2908	372	JaffaCakes118_17d263eaaf2f1373b41cb0c3ff9aa26f.exe	89
PID 372 wrote to memory of 2908	372	JaffaCakes118_17d263eaaf2f1373b41cb0c3ff9aa26f.exe	89
PID 372 wrote to memory of 460	372	JaffaCakes118_17d263eaaf2f1373b41cb0c3ff9aa26f.exe	91
PID 372 wrote to memory of 460	372	JaffaCakes118_17d263eaaf2f1373b41cb0c3ff9aa26f.exe	91
PID 372 wrote to memory of 460	372	JaffaCakes118_17d263eaaf2f1373b41cb0c3ff9aa26f.exe	91
PID 372 wrote to memory of 632	372	JaffaCakes118_17d263eaaf2f1373b41cb0c3ff9aa26f.exe	93
PID 372 wrote to memory of 632	372	JaffaCakes118_17d263eaaf2f1373b41cb0c3ff9aa26f.exe	93
PID 372 wrote to memory of 632	372	JaffaCakes118_17d263eaaf2f1373b41cb0c3ff9aa26f.exe	93
PID 372 wrote to memory of 4720	372	JaffaCakes118_17d263eaaf2f1373b41cb0c3ff9aa26f.exe	96
PID 372 wrote to memory of 4720	372	JaffaCakes118_17d263eaaf2f1373b41cb0c3ff9aa26f.exe	96
PID 372 wrote to memory of 4720	372	JaffaCakes118_17d263eaaf2f1373b41cb0c3ff9aa26f.exe	96
PID 1836 wrote to memory of 3696	1836	vocogacp.exe	102
PID 1836 wrote to memory of 3696	1836	vocogacp.exe	102
PID 1836 wrote to memory of 3696	1836	vocogacp.exe	102
PID 1836 wrote to memory of 3696	1836	vocogacp.exe	102
PID 1836 wrote to memory of 3696	1836	vocogacp.exe	102

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_17d263eaaf2f1373b41cb0c3ff9aa26f.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_17d263eaaf2f1373b41cb0c3ff9aa26f.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:372
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\cjaxywvt\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:5076
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\vocogacp.exe" C:\Windows\SysWOW64\cjaxywvt\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:212
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create cjaxywvt binPath= "C:\Windows\SysWOW64\cjaxywvt\vocogacp.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_17d263eaaf2f1373b41cb0c3ff9aa26f.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2908
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description cjaxywvt "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:460
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start cjaxywvt
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:632
- 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:4720
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 372 -s 1040
  2⤵
  - Program crash
  PID:4620

C:\Windows\SysWOW64\cjaxywvt\vocogacp.exe
C:\Windows\SysWOW64\cjaxywvt\vocogacp.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_17d263eaaf2f1373b41cb0c3ff9aa26f.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1836
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3696
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1836 -s 512
  2⤵
  - Program crash
  PID:1784

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 372 -ip 372
1⤵
PID:1448

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 468 -p 1836 -ip 1836
1⤵
PID:3740

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\vocogacp.exe

Filesize
10.8MB

MD5
c2a5485cd096ab868f8748a303dc73de

SHA1
ae68e457614de444bcb63421a27e685d3ba3da0f

SHA256
ca5ae9f022eff0aca6b5a258922941d2aa85aae40dd978f65675e8e838a1e104

SHA512
57c045c067dc9bb9eb3e2877c7d16eb1a6979c0eeedac125bc47cb2d6c2eca3364c64c1c290d9fd3f9b2299e067a651723af7bb2162686b5c5c5a1dcad669566

Download Submit
memory/372-1-0x00000000007D0000-0x00000000008D0000-memory.dmp

Filesize
1024KB

Download
memory/372-2-0x00000000008F0000-0x0000000000903000-memory.dmp

Filesize
76KB

Download
memory/372-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/372-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/372-9-0x00000000008F0000-0x0000000000903000-memory.dmp

Filesize
76KB

Download
memory/372-8-0x0000000000400000-0x000000000076F000-memory.dmp

Filesize
3.4MB

Download
memory/1836-11-0x0000000000400000-0x000000000076F000-memory.dmp

Filesize
3.4MB

Download
memory/1836-17-0x0000000000400000-0x000000000076F000-memory.dmp

Filesize
3.4MB

Download
memory/3696-12-0x0000000000A20000-0x0000000000A35000-memory.dmp

Filesize
84KB

Download
memory/3696-14-0x0000000000A20000-0x0000000000A35000-memory.dmp

Filesize
84KB

Download
memory/3696-15-0x0000000000A20000-0x0000000000A35000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads