tofsee | 8ccd499069ecdfbdc6b48d295d5e258acf967a60edf962057a74983cd4978708

General

Target

ffadb7d3707426c5b9998e00b4bea27a_JaffaCakes118.exe
Size

10.3MB
MD5

ffadb7d3707426c5b9998e00b4bea27a
SHA1

561627848b9e53958b25cca7012fbf42684cec57
SHA256

8ccd499069ecdfbdc6b48d295d5e258acf967a60edf962057a74983cd4978708
SHA512

aab949615741b62cc70392c5f133493c624de74f37797664585619d899144628d4ceebdd560b6884b523ab2701ae6703849d419a30c50d7c7e4996d3a8eee480
SSDEEP

49152:0c67fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffX:0c6

Score

10^/10

tofsee evasion persistence trojan

Malware Config

Extracted

Family

tofsee

C2

43.231.4.6

lazystax.ru

Signatures

Tofsee
Backdoor/botnet which carries out malicious activities based on commands from a C2 server.
trojan tofsee
Creates new service(s) 1 TTPs
persistence

Windows Service
T1543.003
Modifies Windows Firewall 2 TTPs 1 IoCs
evasion

Windows Service
T1543.003

Disable or Modify System Firewall
T1562.004

Processes:

netsh.exe

pid process

796 netsh.exe

pid	process
796	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\xsplzhjk\ImagePath = "C:\\Windows\\SysWOW64\\xsplzhjk\\bhsdvkeq.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:

ffadb7d3707426c5b9998e00b4bea27a_JaffaCakes118.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2177723727-746291240-1644359950-1000\Control Panel\International\Geo\Nation	ffadb7d3707426c5b9998e00b4bea27a_JaffaCakes118.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

4544 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

bhsdvkeq.exe

pid process

4364 bhsdvkeq.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

bhsdvkeq.exe

description pid process target process

PID 4364 set thread context of 4544 4364 bhsdvkeq.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

3840 sc.exe
3752 sc.exe
1472 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
4544	svchost.exe

pid	process
4364	bhsdvkeq.exe

description	pid	process	target process
PID 4364 set thread context of 4544	4364	bhsdvkeq.exe	svchost.exe

pid	process
3840	sc.exe
3752	sc.exe
1472	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

ffadb7d3707426c5b9998e00b4bea27a_JaffaCakes118.exebhsdvkeq.exe

description	pid	process	target process
PID 728 wrote to memory of 4856	728	ffadb7d3707426c5b9998e00b4bea27a_JaffaCakes118.exe	cmd.exe
PID 728 wrote to memory of 4856	728	ffadb7d3707426c5b9998e00b4bea27a_JaffaCakes118.exe	cmd.exe
PID 728 wrote to memory of 4856	728	ffadb7d3707426c5b9998e00b4bea27a_JaffaCakes118.exe	cmd.exe
PID 728 wrote to memory of 1436	728	ffadb7d3707426c5b9998e00b4bea27a_JaffaCakes118.exe	cmd.exe
PID 728 wrote to memory of 1436	728	ffadb7d3707426c5b9998e00b4bea27a_JaffaCakes118.exe	cmd.exe
PID 728 wrote to memory of 1436	728	ffadb7d3707426c5b9998e00b4bea27a_JaffaCakes118.exe	cmd.exe
PID 728 wrote to memory of 3752	728	ffadb7d3707426c5b9998e00b4bea27a_JaffaCakes118.exe	sc.exe
PID 728 wrote to memory of 3752	728	ffadb7d3707426c5b9998e00b4bea27a_JaffaCakes118.exe	sc.exe
PID 728 wrote to memory of 3752	728	ffadb7d3707426c5b9998e00b4bea27a_JaffaCakes118.exe	sc.exe
PID 728 wrote to memory of 1472	728	ffadb7d3707426c5b9998e00b4bea27a_JaffaCakes118.exe	sc.exe
PID 728 wrote to memory of 1472	728	ffadb7d3707426c5b9998e00b4bea27a_JaffaCakes118.exe	sc.exe
PID 728 wrote to memory of 1472	728	ffadb7d3707426c5b9998e00b4bea27a_JaffaCakes118.exe	sc.exe
PID 728 wrote to memory of 3840	728	ffadb7d3707426c5b9998e00b4bea27a_JaffaCakes118.exe	sc.exe
PID 728 wrote to memory of 3840	728	ffadb7d3707426c5b9998e00b4bea27a_JaffaCakes118.exe	sc.exe
PID 728 wrote to memory of 3840	728	ffadb7d3707426c5b9998e00b4bea27a_JaffaCakes118.exe	sc.exe
PID 728 wrote to memory of 796	728	ffadb7d3707426c5b9998e00b4bea27a_JaffaCakes118.exe	netsh.exe
PID 728 wrote to memory of 796	728	ffadb7d3707426c5b9998e00b4bea27a_JaffaCakes118.exe	netsh.exe
PID 728 wrote to memory of 796	728	ffadb7d3707426c5b9998e00b4bea27a_JaffaCakes118.exe	netsh.exe
PID 4364 wrote to memory of 4544	4364	bhsdvkeq.exe	svchost.exe
PID 4364 wrote to memory of 4544	4364	bhsdvkeq.exe	svchost.exe
PID 4364 wrote to memory of 4544	4364	bhsdvkeq.exe	svchost.exe
PID 4364 wrote to memory of 4544	4364	bhsdvkeq.exe	svchost.exe
PID 4364 wrote to memory of 4544	4364	bhsdvkeq.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\ffadb7d3707426c5b9998e00b4bea27a_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\ffadb7d3707426c5b9998e00b4bea27a_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:728
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\xsplzhjk\
  2⤵
  PID:4856
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\bhsdvkeq.exe" C:\Windows\SysWOW64\xsplzhjk\
  2⤵
  PID:1436
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create xsplzhjk binPath= "C:\Windows\SysWOW64\xsplzhjk\bhsdvkeq.exe /d\"C:\Users\Admin\AppData\Local\Temp\ffadb7d3707426c5b9998e00b4bea27a_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  PID:3752
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description xsplzhjk "wifi internet conection"
  2⤵
  - Launches sc.exe
  PID:1472
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start xsplzhjk
  2⤵
  - Launches sc.exe
  PID:3840
- 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
  PID:796

C:\Windows\SysWOW64\xsplzhjk\bhsdvkeq.exe
C:\Windows\SysWOW64\xsplzhjk\bhsdvkeq.exe /d"C:\Users\Admin\AppData\Local\Temp\ffadb7d3707426c5b9998e00b4bea27a_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4364
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  PID:4544

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

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

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

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
12.3MB

MD5
b23952a1baeba9a8cc172c7f2ca830af

SHA1
81a90f30a54705421eb89b9e86142af75a3076a2

SHA256
59f91ecd73fb6e60b5292b3941c030c324efaaea464ac07fb6cf387295de8a18

SHA512
ba85c6bac5fed8bc4d47fe29e4088eca21f4e1b05423ab3edd96d6b7428cb12824ca0dacc7cf3a4d80f8d1d54fb6eea738e18bd6234200e18b746bd4bf4988e5

Download Submit
memory/728-2-0x0000000000DC0000-0x0000000000DD3000-memory.dmp

Filesize
76KB

Download
memory/728-4-0x0000000000400000-0x0000000000C1C000-memory.dmp

Filesize
8.1MB

Download
memory/728-7-0x0000000000400000-0x0000000000C1C000-memory.dmp

Filesize
8.1MB

Download
memory/728-8-0x0000000000DC0000-0x0000000000DD3000-memory.dmp

Filesize
76KB

Download
memory/728-1-0x0000000000E50000-0x0000000000F50000-memory.dmp

Filesize
1024KB

Download
memory/4364-13-0x0000000000400000-0x0000000000C1C000-memory.dmp

Filesize
8.1MB

Download
memory/4364-11-0x0000000000EC0000-0x0000000000FC0000-memory.dmp

Filesize
1024KB

Download
memory/4544-10-0x0000000000550000-0x0000000000565000-memory.dmp

Filesize
84KB

Download
memory/4544-16-0x0000000000550000-0x0000000000565000-memory.dmp

Filesize
84KB

Download
memory/4544-17-0x0000000000550000-0x0000000000565000-memory.dmp

Filesize
84KB

Download
memory/4544-18-0x0000000000550000-0x0000000000565000-memory.dmp

Filesize
84KB

Download
memory/4544-19-0x0000000000550000-0x0000000000565000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads