tofsee | d571f943625720e60cb551920fed0c2bc03828011bdc6ec1485c66158b7b066a

Analysis

max time kernel
150s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
03/04/2024, 17:46

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General

Target
a2847ef32cee890eeb129f2af730dc74_JaffaCakes118.exe
Size 10.8MB
Sample240403-wcfqqsge72
SHA256 d571f943625720e60cb551920fed0c2bc03828011bdc6ec1485c66158b7b066a
MD5 a2847ef32cee890eeb129f2af730dc74
SHA1 e6c292c9ce35d24de624df00fb9b313c62d6a6b9
SHA512 a95cf0b12aca29e4be4f034bf69f965a9f9355ad49e75b11382cb4d56c73feae15d9dcdb21fab67888e5c5ba0763d6b51380b8bb96bb5c42d7ff611ea53226fe
SSDEEP 12288:6Zrif5ZHYBN6U7EP9rFRnyphAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAs:6Bif5ZCEFxV
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
2252	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\fiuanhis\ImagePath = "C:\\Windows\\SysWOW64\\fiuanhis\\xatbzbjt.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-1-5-21-3045580317-3728985860-206385570-1000\Control Panel\International\Geo\Nation	a2847ef32cee890eeb129f2af730dc74_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
416	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1976	xatbzbjt.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1976 set thread context of 416	1976	xatbzbjt.exe	108

Launches sc.exe 3 IoCs

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

pid	Process
1012	sc.exe
5020	sc.exe
1616	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
4928	4884	WerFault.exe	86
3576	1976	WerFault.exe	102

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4884 wrote to memory of 1136	4884	a2847ef32cee890eeb129f2af730dc74_JaffaCakes118.exe	88
PID 4884 wrote to memory of 1136	4884	a2847ef32cee890eeb129f2af730dc74_JaffaCakes118.exe	88
PID 4884 wrote to memory of 1136	4884	a2847ef32cee890eeb129f2af730dc74_JaffaCakes118.exe	88
PID 4884 wrote to memory of 4440	4884	a2847ef32cee890eeb129f2af730dc74_JaffaCakes118.exe	92
PID 4884 wrote to memory of 4440	4884	a2847ef32cee890eeb129f2af730dc74_JaffaCakes118.exe	92
PID 4884 wrote to memory of 4440	4884	a2847ef32cee890eeb129f2af730dc74_JaffaCakes118.exe	92
PID 4884 wrote to memory of 1012	4884	a2847ef32cee890eeb129f2af730dc74_JaffaCakes118.exe	94
PID 4884 wrote to memory of 1012	4884	a2847ef32cee890eeb129f2af730dc74_JaffaCakes118.exe	94
PID 4884 wrote to memory of 1012	4884	a2847ef32cee890eeb129f2af730dc74_JaffaCakes118.exe	94
PID 4884 wrote to memory of 5020	4884	a2847ef32cee890eeb129f2af730dc74_JaffaCakes118.exe	97
PID 4884 wrote to memory of 5020	4884	a2847ef32cee890eeb129f2af730dc74_JaffaCakes118.exe	97
PID 4884 wrote to memory of 5020	4884	a2847ef32cee890eeb129f2af730dc74_JaffaCakes118.exe	97
PID 4884 wrote to memory of 1616	4884	a2847ef32cee890eeb129f2af730dc74_JaffaCakes118.exe	100
PID 4884 wrote to memory of 1616	4884	a2847ef32cee890eeb129f2af730dc74_JaffaCakes118.exe	100
PID 4884 wrote to memory of 1616	4884	a2847ef32cee890eeb129f2af730dc74_JaffaCakes118.exe	100
PID 4884 wrote to memory of 2252	4884	a2847ef32cee890eeb129f2af730dc74_JaffaCakes118.exe	103
PID 4884 wrote to memory of 2252	4884	a2847ef32cee890eeb129f2af730dc74_JaffaCakes118.exe	103
PID 4884 wrote to memory of 2252	4884	a2847ef32cee890eeb129f2af730dc74_JaffaCakes118.exe	103
PID 1976 wrote to memory of 416	1976	xatbzbjt.exe	108
PID 1976 wrote to memory of 416	1976	xatbzbjt.exe	108
PID 1976 wrote to memory of 416	1976	xatbzbjt.exe	108
PID 1976 wrote to memory of 416	1976	xatbzbjt.exe	108
PID 1976 wrote to memory of 416	1976	xatbzbjt.exe	108

C:\Users\Admin\AppData\Local\Temp\a2847ef32cee890eeb129f2af730dc74_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\a2847ef32cee890eeb129f2af730dc74_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4884
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\fiuanhis\
  2⤵
  PID:1136
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\xatbzbjt.exe" C:\Windows\SysWOW64\fiuanhis\
  2⤵
  PID:4440
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create fiuanhis binPath= "C:\Windows\SysWOW64\fiuanhis\xatbzbjt.exe /d\"C:\Users\Admin\AppData\Local\Temp\a2847ef32cee890eeb129f2af730dc74_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  PID:1012
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description fiuanhis "wifi internet conection"
  2⤵
  - Launches sc.exe
  PID:5020
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start fiuanhis
  2⤵
  - Launches sc.exe
  PID:1616
- 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:2252
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4884 -s 1336
  2⤵
  - Program crash
  PID:4928

C:\Windows\SysWOW64\fiuanhis\xatbzbjt.exe
C:\Windows\SysWOW64\fiuanhis\xatbzbjt.exe /d"C:\Users\Admin\AppData\Local\Temp\a2847ef32cee890eeb129f2af730dc74_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1976
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  PID:416
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1976 -s 508
  2⤵
  - Program crash
  PID:3576

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 4884 -ip 4884
1⤵
PID:1588

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 188 -p 1976 -ip 1976
1⤵
PID:4936

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

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Downloads

xatbzbjt.exe

Path C:\Users\Admin\AppData\Local\Temp\xatbzbjt.exe
Size 13.8MB
SHA256 39067f55d5721cb102fa8e884107e8e9ef2302cc8bab51f820f85cc841219aee
MD5 7eed51bb88ef9ae39fd3d0a5e080c5a1
SHA1 f8c035f4b3d6a309b0f52d5fb83a4cd98cfb8a1c
SHA512 382421bf2d1e20f4197cbc1d6a6a8383487efa2cb90158bbe781de9b99ee075e73ab6e8052ff92a21a577606ad300d8ef1ed24d120f7ac1df046edd22996ec0e
SSDEEP 12288:qZrif5ZHYBN6U7EP9rFRnyphAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAU:qBif5ZCEFxV
MD5 SHA1 SHA512 SSDEEP

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memory/416-15-0x0000000000730000-0x0000000000745000-memory.dmp

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memory/416-12-0x0000000000730000-0x0000000000745000-memory.dmp

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memory/416-16-0x0000000000730000-0x0000000000745000-memory.dmp

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memory/416-18-0x0000000000730000-0x0000000000745000-memory.dmp

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memory/416-19-0x0000000000730000-0x0000000000745000-memory.dmp

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memory/1976-10-0x00000000005B0000-0x00000000006B0000-memory.dmp

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memory/1976-11-0x0000000000400000-0x000000000044D000-memory.dmp

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memory/1976-17-0x0000000000400000-0x000000000044D000-memory.dmp

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memory/4884-3-0x0000000000400000-0x000000000044D000-memory.dmp

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memory/4884-2-0x0000000000680000-0x0000000000693000-memory.dmp

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memory/4884-8-0x0000000000400000-0x000000000044D000-memory.dmp

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memory/4884-9-0x0000000000680000-0x0000000000693000-memory.dmp

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memory/4884-1-0x00000000006D0000-0x00000000007D0000-memory.dmp

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Analysis

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General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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