tofsee | 6b1b9d0dbe7ab8cc243bf56a7beec0d09aa27becbc334d82b8b511bfd68b6e66

General

Target

JaffaCakes118_6b1b9d0dbe7ab8cc243bf56a7beec0d09aa27becbc334d82b8b511bfd68b6e66.exe
Size

242KB
MD5

2c68d9c4e5df87c3174b62feaaadd1b1
SHA1

189b7c11c1a376add061d184774f42f9f6918dad
SHA256

6b1b9d0dbe7ab8cc243bf56a7beec0d09aa27becbc334d82b8b511bfd68b6e66
SHA512

3aeca678c39dbd8fa756ee07dbbd58b0a78dfb007d7afa8ec4a178927c479e827f939e7de6cd74db377b55954310d394e5627831ef77453b4d19b43a215aebf5
SSDEEP

6144:2FZQ9Gib7z1rzhr6Za7CD3XtHgih7iFqj2GRW:AZQbX1rzh2DD39AqwqPR

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
4700	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\jfoegdpb\ImagePath = "C:\\Windows\\SysWOW64\\jfoegdpb\\bvrxiskq.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_6b1b9d0dbe7ab8cc243bf56a7beec0d09aa27becbc334d82b8b511bfd68b6e66.exe

Deletes itself 1 IoCs

pid	Process
3860	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
112	bvrxiskq.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 112 set thread context of 3860	112	bvrxiskq.exe	100

Launches sc.exe 3 IoCs

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

pid	Process
1696	sc.exe
1044	sc.exe
792	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
3028	1200	WerFault.exe	82
1140	112	WerFault.exe	93

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	cmd.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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_6b1b9d0dbe7ab8cc243bf56a7beec0d09aa27becbc334d82b8b511bfd68b6e66.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	bvrxiskq.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1200 wrote to memory of 3888	1200	JaffaCakes118_6b1b9d0dbe7ab8cc243bf56a7beec0d09aa27becbc334d82b8b511bfd68b6e66.exe	83
PID 1200 wrote to memory of 3888	1200	JaffaCakes118_6b1b9d0dbe7ab8cc243bf56a7beec0d09aa27becbc334d82b8b511bfd68b6e66.exe	83
PID 1200 wrote to memory of 3888	1200	JaffaCakes118_6b1b9d0dbe7ab8cc243bf56a7beec0d09aa27becbc334d82b8b511bfd68b6e66.exe	83
PID 1200 wrote to memory of 3760	1200	JaffaCakes118_6b1b9d0dbe7ab8cc243bf56a7beec0d09aa27becbc334d82b8b511bfd68b6e66.exe	85
PID 1200 wrote to memory of 3760	1200	JaffaCakes118_6b1b9d0dbe7ab8cc243bf56a7beec0d09aa27becbc334d82b8b511bfd68b6e66.exe	85
PID 1200 wrote to memory of 3760	1200	JaffaCakes118_6b1b9d0dbe7ab8cc243bf56a7beec0d09aa27becbc334d82b8b511bfd68b6e66.exe	85
PID 1200 wrote to memory of 1696	1200	JaffaCakes118_6b1b9d0dbe7ab8cc243bf56a7beec0d09aa27becbc334d82b8b511bfd68b6e66.exe	87
PID 1200 wrote to memory of 1696	1200	JaffaCakes118_6b1b9d0dbe7ab8cc243bf56a7beec0d09aa27becbc334d82b8b511bfd68b6e66.exe	87
PID 1200 wrote to memory of 1696	1200	JaffaCakes118_6b1b9d0dbe7ab8cc243bf56a7beec0d09aa27becbc334d82b8b511bfd68b6e66.exe	87
PID 1200 wrote to memory of 1044	1200	JaffaCakes118_6b1b9d0dbe7ab8cc243bf56a7beec0d09aa27becbc334d82b8b511bfd68b6e66.exe	89
PID 1200 wrote to memory of 1044	1200	JaffaCakes118_6b1b9d0dbe7ab8cc243bf56a7beec0d09aa27becbc334d82b8b511bfd68b6e66.exe	89
PID 1200 wrote to memory of 1044	1200	JaffaCakes118_6b1b9d0dbe7ab8cc243bf56a7beec0d09aa27becbc334d82b8b511bfd68b6e66.exe	89
PID 1200 wrote to memory of 792	1200	JaffaCakes118_6b1b9d0dbe7ab8cc243bf56a7beec0d09aa27becbc334d82b8b511bfd68b6e66.exe	91
PID 1200 wrote to memory of 792	1200	JaffaCakes118_6b1b9d0dbe7ab8cc243bf56a7beec0d09aa27becbc334d82b8b511bfd68b6e66.exe	91
PID 1200 wrote to memory of 792	1200	JaffaCakes118_6b1b9d0dbe7ab8cc243bf56a7beec0d09aa27becbc334d82b8b511bfd68b6e66.exe	91
PID 1200 wrote to memory of 4700	1200	JaffaCakes118_6b1b9d0dbe7ab8cc243bf56a7beec0d09aa27becbc334d82b8b511bfd68b6e66.exe	94
PID 1200 wrote to memory of 4700	1200	JaffaCakes118_6b1b9d0dbe7ab8cc243bf56a7beec0d09aa27becbc334d82b8b511bfd68b6e66.exe	94
PID 1200 wrote to memory of 4700	1200	JaffaCakes118_6b1b9d0dbe7ab8cc243bf56a7beec0d09aa27becbc334d82b8b511bfd68b6e66.exe	94
PID 112 wrote to memory of 3860	112	bvrxiskq.exe	100
PID 112 wrote to memory of 3860	112	bvrxiskq.exe	100
PID 112 wrote to memory of 3860	112	bvrxiskq.exe	100
PID 112 wrote to memory of 3860	112	bvrxiskq.exe	100
PID 112 wrote to memory of 3860	112	bvrxiskq.exe	100

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6b1b9d0dbe7ab8cc243bf56a7beec0d09aa27becbc334d82b8b511bfd68b6e66.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6b1b9d0dbe7ab8cc243bf56a7beec0d09aa27becbc334d82b8b511bfd68b6e66.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1200
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\jfoegdpb\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3888
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\bvrxiskq.exe" C:\Windows\SysWOW64\jfoegdpb\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3760
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create jfoegdpb binPath= "C:\Windows\SysWOW64\jfoegdpb\bvrxiskq.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6b1b9d0dbe7ab8cc243bf56a7beec0d09aa27becbc334d82b8b511bfd68b6e66.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1696
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description jfoegdpb "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1044
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start jfoegdpb
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:792
- 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:4700
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1200 -s 656
  2⤵
  - Program crash
  PID:3028

C:\Windows\SysWOW64\jfoegdpb\bvrxiskq.exe
C:\Windows\SysWOW64\jfoegdpb\bvrxiskq.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6b1b9d0dbe7ab8cc243bf56a7beec0d09aa27becbc334d82b8b511bfd68b6e66.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:112
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3860
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 112 -s 508
  2⤵
  - Program crash
  PID:1140

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 1200 -ip 1200
1⤵
PID:4964

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 112 -ip 112
1⤵
PID:960

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\bvrxiskq.exe

Filesize
11.2MB

MD5
4bb64c460693cc5b479da006f5f8c0d3

SHA1
03d18645fca1087905e36f6376dcfad98a25c053

SHA256
600e33cb6e1dfee27f08ccbebb625f04a4fc924406b57603e2bc6832d4ffeeb5

SHA512
57ce66492dff6dc270210f17b44bb1a62493a0e0bfaab8b43cbe349125018c24f1d3b7426c003992c8d8d1e9db64585c0ec6f61a78415484f5226341bc33b2cc

Download Submit
memory/112-12-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/112-11-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/112-18-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/1200-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1200-2-0x0000000000490000-0x00000000004A3000-memory.dmp

Filesize
76KB

Download
memory/1200-9-0x0000000000490000-0x00000000004A3000-memory.dmp

Filesize
76KB

Download
memory/1200-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1200-8-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/1200-1-0x0000000000610000-0x0000000000710000-memory.dmp

Filesize
1024KB

Download
memory/3860-13-0x0000000000B90000-0x0000000000BA5000-memory.dmp

Filesize
84KB

Download
memory/3860-15-0x0000000000B90000-0x0000000000BA5000-memory.dmp

Filesize
84KB

Download
memory/3860-16-0x0000000000B90000-0x0000000000BA5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads