tofsee | 064748a64b3e6198f3f9b3821f8aa4b74ee9d687503a1e9ded2926308a86517f

Analysis

max time kernel
146s
max time network
142s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
16/04/2024, 00:52

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General

Target
f2500e9a3134b4790760b2ef60c0144b_JaffaCakes118.exe
Size 10.6MB
Sample240416-a77xtaeh2w
SHA256 064748a64b3e6198f3f9b3821f8aa4b74ee9d687503a1e9ded2926308a86517f
MD5 f2500e9a3134b4790760b2ef60c0144b
SHA1 1c3f9aaa8988227ebad2686e977533d53e51b162
SHA512 ba69ce0db33d4691641f7dbdc4ae3b2a582e1a47d12d606b0ba1761bf5d442f3e772aeb7327c6ea6293144c3ccb923d86e578db6e3a96f8537584d342576173a
SSDEEP 24576:AerU5sWbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb7:AsW
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
2280	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\bunksdbo\ImagePath = "C:\\Windows\\SysWOW64\\bunksdbo\\yqzherdx.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-1-5-21-2177723727-746291240-1644359950-1000\Control Panel\International\Geo\Nation	f2500e9a3134b4790760b2ef60c0144b_JaffaCakes118.exe

Executes dropped EXE 1 IoCs

pid	Process
3880	yqzherdx.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3880 set thread context of 5068	3880	yqzherdx.exe	106

Launches sc.exe 3 IoCs

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

pid	Process
3388	sc.exe
2320	sc.exe
3608	sc.exe

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

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 868 wrote to memory of 3164	868	f2500e9a3134b4790760b2ef60c0144b_JaffaCakes118.exe	91
PID 868 wrote to memory of 3164	868	f2500e9a3134b4790760b2ef60c0144b_JaffaCakes118.exe	91
PID 868 wrote to memory of 3164	868	f2500e9a3134b4790760b2ef60c0144b_JaffaCakes118.exe	91
PID 868 wrote to memory of 736	868	f2500e9a3134b4790760b2ef60c0144b_JaffaCakes118.exe	93
PID 868 wrote to memory of 736	868	f2500e9a3134b4790760b2ef60c0144b_JaffaCakes118.exe	93
PID 868 wrote to memory of 736	868	f2500e9a3134b4790760b2ef60c0144b_JaffaCakes118.exe	93
PID 868 wrote to memory of 3388	868	f2500e9a3134b4790760b2ef60c0144b_JaffaCakes118.exe	95
PID 868 wrote to memory of 3388	868	f2500e9a3134b4790760b2ef60c0144b_JaffaCakes118.exe	95
PID 868 wrote to memory of 3388	868	f2500e9a3134b4790760b2ef60c0144b_JaffaCakes118.exe	95
PID 868 wrote to memory of 2320	868	f2500e9a3134b4790760b2ef60c0144b_JaffaCakes118.exe	99
PID 868 wrote to memory of 2320	868	f2500e9a3134b4790760b2ef60c0144b_JaffaCakes118.exe	99
PID 868 wrote to memory of 2320	868	f2500e9a3134b4790760b2ef60c0144b_JaffaCakes118.exe	99
PID 868 wrote to memory of 3608	868	f2500e9a3134b4790760b2ef60c0144b_JaffaCakes118.exe	101
PID 868 wrote to memory of 3608	868	f2500e9a3134b4790760b2ef60c0144b_JaffaCakes118.exe	101
PID 868 wrote to memory of 3608	868	f2500e9a3134b4790760b2ef60c0144b_JaffaCakes118.exe	101
PID 868 wrote to memory of 2280	868	f2500e9a3134b4790760b2ef60c0144b_JaffaCakes118.exe	104
PID 868 wrote to memory of 2280	868	f2500e9a3134b4790760b2ef60c0144b_JaffaCakes118.exe	104
PID 868 wrote to memory of 2280	868	f2500e9a3134b4790760b2ef60c0144b_JaffaCakes118.exe	104
PID 3880 wrote to memory of 5068	3880	yqzherdx.exe	106
PID 3880 wrote to memory of 5068	3880	yqzherdx.exe	106
PID 3880 wrote to memory of 5068	3880	yqzherdx.exe	106
PID 3880 wrote to memory of 5068	3880	yqzherdx.exe	106
PID 3880 wrote to memory of 5068	3880	yqzherdx.exe	106

C:\Users\Admin\AppData\Local\Temp\f2500e9a3134b4790760b2ef60c0144b_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f2500e9a3134b4790760b2ef60c0144b_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:868
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\bunksdbo\
  2⤵
  PID:3164
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\yqzherdx.exe" C:\Windows\SysWOW64\bunksdbo\
  2⤵
  PID:736
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create bunksdbo binPath= "C:\Windows\SysWOW64\bunksdbo\yqzherdx.exe /d\"C:\Users\Admin\AppData\Local\Temp\f2500e9a3134b4790760b2ef60c0144b_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  PID:3388
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description bunksdbo "wifi internet conection"
  2⤵
  - Launches sc.exe
  PID:2320
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start bunksdbo
  2⤵
  - Launches sc.exe
  PID:3608
- 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:2280

C:\Windows\SysWOW64\bunksdbo\yqzherdx.exe
C:\Windows\SysWOW64\bunksdbo\yqzherdx.exe /d"C:\Users\Admin\AppData\Local\Temp\f2500e9a3134b4790760b2ef60c0144b_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3880
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  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

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Downloads

yqzherdx.exe

Path C:\Users\Admin\AppData\Local\Temp\yqzherdx.exe
Size 10.8MB
SHA256 67aa33017e5798bc67b434b573ef8b04f1fad4671fea6303fde4381c9e457695
MD5 1c9e17089fc5153538255a5a42877db3
SHA1 a551b4a07a44ff766d584f77b448d3d705f06d77
SHA512 a125eefe402cc246f310bdc8e2e846f66e07d27a0e02463af302e82db09977484be1e133629adbfb976258108c2b43f9e2a332eee23c78901d1f091efe1f3010
SSDEEP 24576:JerU5sWbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb3:JsW
MD5 SHA1 SHA512 SSDEEP

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memory/868-15-0x0000000000400000-0x000000000046D000-memory.dmp

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memory/868-2-0x0000000002070000-0x0000000002083000-memory.dmp

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memory/868-23-0x00000000005B0000-0x00000000006B0000-memory.dmp

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memory/868-4-0x0000000000400000-0x000000000046D000-memory.dmp

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memory/868-1-0x00000000005B0000-0x00000000006B0000-memory.dmp

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memory/3880-18-0x0000000000400000-0x000000000046D000-memory.dmp

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memory/3880-8-0x00000000004D0000-0x00000000005D0000-memory.dmp

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memory/3880-9-0x00000000005F0000-0x0000000000603000-memory.dmp

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memory/3880-11-0x0000000000400000-0x000000000046D000-memory.dmp

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memory/5068-14-0x0000000000FC0000-0x0000000000FD5000-memory.dmp

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memory/5068-17-0x0000000000FC0000-0x0000000000FD5000-memory.dmp

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memory/5068-16-0x0000000000FC0000-0x0000000000FD5000-memory.dmp

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memory/5068-10-0x0000000000FC0000-0x0000000000FD5000-memory.dmp

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memory/5068-25-0x0000000000FC0000-0x0000000000FD5000-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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