tofsee | d070f43729c000ac138d6666b1ec932d5b513f94fd4eeba1f549811146a25a01

Analysis

max time kernel
150s
max time network
141s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
18/04/2024, 21:36

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
f8cc259a0c835f7c01a3d4a76fbbf0e9_JaffaCakes118.exe
Size 13.4MB
Sample240418-1fxkwafe64
SHA256 d070f43729c000ac138d6666b1ec932d5b513f94fd4eeba1f549811146a25a01
MD5 f8cc259a0c835f7c01a3d4a76fbbf0e9
SHA1 37bd6f7e3c970355684bbe521ade1bef750cea74
SHA512 fadab6c9f3a4bba02ce0ea4a967aba52ed04ce0096796bce8d2cf66ff91a45767cde6ed646d672355afc74791f377fa2c02b499c6c2eb6490f7c7674396dce63
SSDEEP 24576:5Uqa71YB5DHlommmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmH:5F15
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

tofsee evasion persistence trojan

Malware Config

Extracted

Family

tofsee

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) 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

pid	Process
4052	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\yqmfuqcm\ImagePath = "C:\\Windows\\SysWOW64\\yqmfuqcm\\nixhmrjh.exe"	nixhmrjh.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-1-5-21-2177723727-746291240-1644359950-1000\Control Panel\International\Geo\Nation	f8cc259a0c835f7c01a3d4a76fbbf0e9_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
3208	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3616	nixhmrjh.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3616 set thread context of 3208	3616	nixhmrjh.exe	107

Launches sc.exe 3 IoCs

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

pid	Process
2384	sc.exe
1812	sc.exe
2616	sc.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Program crash 2 IoCs

pid	pid_target	Process	procid_target
1548	3960	WerFault.exe	85
4040	3616	WerFault.exe	101

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3960 wrote to memory of 3196	3960	f8cc259a0c835f7c01a3d4a76fbbf0e9_JaffaCakes118.exe	90
PID 3960 wrote to memory of 3196	3960	f8cc259a0c835f7c01a3d4a76fbbf0e9_JaffaCakes118.exe	90
PID 3960 wrote to memory of 3196	3960	f8cc259a0c835f7c01a3d4a76fbbf0e9_JaffaCakes118.exe	90
PID 3960 wrote to memory of 2768	3960	f8cc259a0c835f7c01a3d4a76fbbf0e9_JaffaCakes118.exe	92
PID 3960 wrote to memory of 2768	3960	f8cc259a0c835f7c01a3d4a76fbbf0e9_JaffaCakes118.exe	92
PID 3960 wrote to memory of 2768	3960	f8cc259a0c835f7c01a3d4a76fbbf0e9_JaffaCakes118.exe	92
PID 3960 wrote to memory of 2384	3960	f8cc259a0c835f7c01a3d4a76fbbf0e9_JaffaCakes118.exe	94
PID 3960 wrote to memory of 2384	3960	f8cc259a0c835f7c01a3d4a76fbbf0e9_JaffaCakes118.exe	94
PID 3960 wrote to memory of 2384	3960	f8cc259a0c835f7c01a3d4a76fbbf0e9_JaffaCakes118.exe	94
PID 3960 wrote to memory of 1812	3960	f8cc259a0c835f7c01a3d4a76fbbf0e9_JaffaCakes118.exe	96
PID 3960 wrote to memory of 1812	3960	f8cc259a0c835f7c01a3d4a76fbbf0e9_JaffaCakes118.exe	96
PID 3960 wrote to memory of 1812	3960	f8cc259a0c835f7c01a3d4a76fbbf0e9_JaffaCakes118.exe	96
PID 3960 wrote to memory of 2616	3960	f8cc259a0c835f7c01a3d4a76fbbf0e9_JaffaCakes118.exe	98
PID 3960 wrote to memory of 2616	3960	f8cc259a0c835f7c01a3d4a76fbbf0e9_JaffaCakes118.exe	98
PID 3960 wrote to memory of 2616	3960	f8cc259a0c835f7c01a3d4a76fbbf0e9_JaffaCakes118.exe	98
PID 3960 wrote to memory of 4052	3960	f8cc259a0c835f7c01a3d4a76fbbf0e9_JaffaCakes118.exe	102
PID 3960 wrote to memory of 4052	3960	f8cc259a0c835f7c01a3d4a76fbbf0e9_JaffaCakes118.exe	102
PID 3960 wrote to memory of 4052	3960	f8cc259a0c835f7c01a3d4a76fbbf0e9_JaffaCakes118.exe	102
PID 3616 wrote to memory of 3208	3616	nixhmrjh.exe	107
PID 3616 wrote to memory of 3208	3616	nixhmrjh.exe	107
PID 3616 wrote to memory of 3208	3616	nixhmrjh.exe	107
PID 3616 wrote to memory of 3208	3616	nixhmrjh.exe	107
PID 3616 wrote to memory of 3208	3616	nixhmrjh.exe	107

C:\Users\Admin\AppData\Local\Temp\f8cc259a0c835f7c01a3d4a76fbbf0e9_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f8cc259a0c835f7c01a3d4a76fbbf0e9_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3960
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\yqmfuqcm\
  2⤵
  PID:3196
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\nixhmrjh.exe" C:\Windows\SysWOW64\yqmfuqcm\
  2⤵
  PID:2768
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create yqmfuqcm binPath= "C:\Windows\SysWOW64\yqmfuqcm\nixhmrjh.exe /d\"C:\Users\Admin\AppData\Local\Temp\f8cc259a0c835f7c01a3d4a76fbbf0e9_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  PID:2384
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description yqmfuqcm "wifi internet conection"
  2⤵
  - Launches sc.exe
  PID:1812
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start yqmfuqcm
  2⤵
  - Launches sc.exe
  PID:2616
- 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:4052
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3960 -s 1032
  2⤵
  - Program crash
  PID:1548

C:\Windows\SysWOW64\yqmfuqcm\nixhmrjh.exe
C:\Windows\SysWOW64\yqmfuqcm\nixhmrjh.exe /d"C:\Users\Admin\AppData\Local\Temp\f8cc259a0c835f7c01a3d4a76fbbf0e9_JaffaCakes118.exe"
1⤵
- Sets service image path in registry
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3616
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Deletes itself
  PID:3208
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3616 -s 516
  2⤵
  - Program crash
  PID:4040

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 476 -p 3960 -ip 3960
1⤵
PID:2108

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 484 -p 3616 -ip 3616
1⤵
PID:5068

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Defense Evasion

Impair Defenses

T1562

Disable or Modify System Firewall

T1562.004

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

nixhmrjh.exe

Path C:\Users\Admin\AppData\Local\Temp\nixhmrjh.exe
Size 13.1MB
SHA256 46e6423c66633b2ad250c35d48715f1c653710f2b5f6ee19ce83ac6374a94cd5
MD5 d7c54f0238a93d7dfeb59df5836295c4
SHA1 016600014a0f3072feb6542eab01b2425beae797
SHA512 cc0f1d4a810b1037f97a5b9d436ef1d63d626cf7862783a3bcf11c1aa45ee0237fddf41b7dfe76fd1ccb571624a197e54a80a92d710a08395aca983351bb73c9
SSDEEP 24576:BUqa71YB5DHlommmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmX:BF15
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/3208-15-0x0000000000570000-0x0000000000585000-memory.dmp

Download

memory/3208-12-0x0000000000570000-0x0000000000585000-memory.dmp

Download

memory/3208-16-0x0000000000570000-0x0000000000585000-memory.dmp

Download

memory/3208-18-0x0000000000570000-0x0000000000585000-memory.dmp

Download

memory/3616-10-0x0000000000600000-0x0000000000700000-memory.dmp

Download

memory/3616-11-0x0000000000400000-0x0000000000468000-memory.dmp

Download

memory/3616-17-0x0000000000400000-0x0000000000468000-memory.dmp

Download

memory/3960-3-0x0000000000400000-0x0000000000468000-memory.dmp

Download

memory/3960-2-0x0000000000610000-0x0000000000623000-memory.dmp

Download

memory/3960-9-0x0000000000610000-0x0000000000623000-memory.dmp

Download

memory/3960-8-0x0000000000400000-0x0000000000468000-memory.dmp

Download

memory/3960-1-0x00000000006D0000-0x00000000007D0000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads