tofsee | 451567a8338f0ac84adaf764b66486df72cc7af2c976a421c6d5e89db0d51d86

General

Target

39503374e60c2654abb01f802ad48002_JaffaCakes118.exe
Size

11.5MB
MD5

39503374e60c2654abb01f802ad48002
SHA1

27c79b468c04e3d97f352344455c62ff9d8cc531
SHA256

451567a8338f0ac84adaf764b66486df72cc7af2c976a421c6d5e89db0d51d86
SHA512

ca5442700a4b4446b2392debc2ab8d852d84a66098a7abd77266e0757ecdb09bc4f82000f2a159bdc9acafb6afc5ffc000d445f009168f41965f43829329818f
SSDEEP

6144:5Nytwy0vP4gE/r4JSzyEc9T3M+0snM6rSuB:5I+XvP4Z4JSzyEg7r0snNB

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
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
944	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\hiosggjf\ImagePath = "C:\\Windows\\SysWOW64\\hiosggjf\\xrakxafr.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-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation	39503374e60c2654abb01f802ad48002_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
3732	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1984	xrakxafr.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1984 set thread context of 3732	1984	xrakxafr.exe	98

Launches sc.exe 3 IoCs

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

pid	Process
4392	sc.exe
2044	sc.exe
2564	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

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	xrakxafr.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	39503374e60c2654abb01f802ad48002_JaffaCakes118.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	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2216 wrote to memory of 2884	2216	39503374e60c2654abb01f802ad48002_JaffaCakes118.exe	85
PID 2216 wrote to memory of 2884	2216	39503374e60c2654abb01f802ad48002_JaffaCakes118.exe	85
PID 2216 wrote to memory of 2884	2216	39503374e60c2654abb01f802ad48002_JaffaCakes118.exe	85
PID 2216 wrote to memory of 3212	2216	39503374e60c2654abb01f802ad48002_JaffaCakes118.exe	87
PID 2216 wrote to memory of 3212	2216	39503374e60c2654abb01f802ad48002_JaffaCakes118.exe	87
PID 2216 wrote to memory of 3212	2216	39503374e60c2654abb01f802ad48002_JaffaCakes118.exe	87
PID 2216 wrote to memory of 4392	2216	39503374e60c2654abb01f802ad48002_JaffaCakes118.exe	89
PID 2216 wrote to memory of 4392	2216	39503374e60c2654abb01f802ad48002_JaffaCakes118.exe	89
PID 2216 wrote to memory of 4392	2216	39503374e60c2654abb01f802ad48002_JaffaCakes118.exe	89
PID 2216 wrote to memory of 2044	2216	39503374e60c2654abb01f802ad48002_JaffaCakes118.exe	91
PID 2216 wrote to memory of 2044	2216	39503374e60c2654abb01f802ad48002_JaffaCakes118.exe	91
PID 2216 wrote to memory of 2044	2216	39503374e60c2654abb01f802ad48002_JaffaCakes118.exe	91
PID 2216 wrote to memory of 2564	2216	39503374e60c2654abb01f802ad48002_JaffaCakes118.exe	93
PID 2216 wrote to memory of 2564	2216	39503374e60c2654abb01f802ad48002_JaffaCakes118.exe	93
PID 2216 wrote to memory of 2564	2216	39503374e60c2654abb01f802ad48002_JaffaCakes118.exe	93
PID 2216 wrote to memory of 944	2216	39503374e60c2654abb01f802ad48002_JaffaCakes118.exe	96
PID 2216 wrote to memory of 944	2216	39503374e60c2654abb01f802ad48002_JaffaCakes118.exe	96
PID 2216 wrote to memory of 944	2216	39503374e60c2654abb01f802ad48002_JaffaCakes118.exe	96
PID 1984 wrote to memory of 3732	1984	xrakxafr.exe	98
PID 1984 wrote to memory of 3732	1984	xrakxafr.exe	98
PID 1984 wrote to memory of 3732	1984	xrakxafr.exe	98
PID 1984 wrote to memory of 3732	1984	xrakxafr.exe	98
PID 1984 wrote to memory of 3732	1984	xrakxafr.exe	98

C:\Users\Admin\AppData\Local\Temp\39503374e60c2654abb01f802ad48002_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\39503374e60c2654abb01f802ad48002_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2216
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\hiosggjf\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2884
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\xrakxafr.exe" C:\Windows\SysWOW64\hiosggjf\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3212
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create hiosggjf binPath= "C:\Windows\SysWOW64\hiosggjf\xrakxafr.exe /d\"C:\Users\Admin\AppData\Local\Temp\39503374e60c2654abb01f802ad48002_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4392
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description hiosggjf "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2044
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start hiosggjf
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2564
- 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:944

C:\Windows\SysWOW64\hiosggjf\xrakxafr.exe
C:\Windows\SysWOW64\hiosggjf\xrakxafr.exe /d"C:\Users\Admin\AppData\Local\Temp\39503374e60c2654abb01f802ad48002_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1984
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3732

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\xrakxafr.exe

Filesize
14.2MB

MD5
e8a89dbc459af40e4da25631abb8715b

SHA1
5aa7a525ce1e5217b85c64a05b2c68564130fa94

SHA256
64ba6264a038115a11d6ee7ab261fd14254759b459cf2a3ae37bff474ec4208b

SHA512
90c8a1cc45c2baffaa3f08d6f5bd627d4ffd507156d3dc12c930840bb57bc5d343e108a3cf84f11d32f816cbc797476008a06f92ac0bc488c19ce8560f3bb105

Download Submit
memory/1984-13-0x0000000000400000-0x000000000086B000-memory.dmp

Filesize
4.4MB

Download
memory/1984-16-0x0000000000400000-0x000000000086B000-memory.dmp

Filesize
4.4MB

Download
memory/2216-1-0x0000000000B20000-0x0000000000C20000-memory.dmp

Filesize
1024KB

Download
memory/2216-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/2216-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2216-8-0x0000000000400000-0x000000000086B000-memory.dmp

Filesize
4.4MB

Download
memory/2216-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2216-9-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/3732-14-0x0000000000420000-0x0000000000435000-memory.dmp

Filesize
84KB

Download
memory/3732-11-0x0000000000420000-0x0000000000435000-memory.dmp

Filesize
84KB

Download
memory/3732-17-0x0000000000420000-0x0000000000435000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads