tofsee | 96e67d80d9eca5208f9fe6f5cb977453adac57ac026d4c6b4cd640418911483d

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
04/04/2024, 16:51

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General

Target
bd87e76554e82c653200bfe2c2114355_JaffaCakes118.exe
Size 10.1MB
Sample240404-vczceach5t
SHA256 96e67d80d9eca5208f9fe6f5cb977453adac57ac026d4c6b4cd640418911483d
MD5 bd87e76554e82c653200bfe2c2114355
SHA1 e3cce184cef20580e9af902bd49c5caa5fbf0450
SHA512 bd1ebe00cc68a1c16757d1160964dd40a0362f9902244e36b74f41a1322c37fd1c4f7fa9a1767a4a848e3240d8609fd7060ab2f1a313d271748d51e7fb9cdbe4
SSDEEP 196608:QhKaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaq:Q
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
5080	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\qmgxhlc\ImagePath = "C:\\Windows\\SysWOW64\\qmgxhlc\\kzmiutmy.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-1-5-21-1497073144-2389943819-3385106915-1000\Control Panel\International\Geo\Nation	bd87e76554e82c653200bfe2c2114355_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
4056	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
380	kzmiutmy.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 380 set thread context of 4056	380	kzmiutmy.exe	102

Launches sc.exe 3 IoCs

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

pid	Process
2604	sc.exe
2124	sc.exe
4328	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
4972	4556	WerFault.exe	85
2464	380	WerFault.exe	96

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4556 wrote to memory of 5112	4556	bd87e76554e82c653200bfe2c2114355_JaffaCakes118.exe	86
PID 4556 wrote to memory of 5112	4556	bd87e76554e82c653200bfe2c2114355_JaffaCakes118.exe	86
PID 4556 wrote to memory of 5112	4556	bd87e76554e82c653200bfe2c2114355_JaffaCakes118.exe	86
PID 4556 wrote to memory of 3704	4556	bd87e76554e82c653200bfe2c2114355_JaffaCakes118.exe	88
PID 4556 wrote to memory of 3704	4556	bd87e76554e82c653200bfe2c2114355_JaffaCakes118.exe	88
PID 4556 wrote to memory of 3704	4556	bd87e76554e82c653200bfe2c2114355_JaffaCakes118.exe	88
PID 4556 wrote to memory of 2604	4556	bd87e76554e82c653200bfe2c2114355_JaffaCakes118.exe	90
PID 4556 wrote to memory of 2604	4556	bd87e76554e82c653200bfe2c2114355_JaffaCakes118.exe	90
PID 4556 wrote to memory of 2604	4556	bd87e76554e82c653200bfe2c2114355_JaffaCakes118.exe	90
PID 4556 wrote to memory of 2124	4556	bd87e76554e82c653200bfe2c2114355_JaffaCakes118.exe	92
PID 4556 wrote to memory of 2124	4556	bd87e76554e82c653200bfe2c2114355_JaffaCakes118.exe	92
PID 4556 wrote to memory of 2124	4556	bd87e76554e82c653200bfe2c2114355_JaffaCakes118.exe	92
PID 4556 wrote to memory of 4328	4556	bd87e76554e82c653200bfe2c2114355_JaffaCakes118.exe	94
PID 4556 wrote to memory of 4328	4556	bd87e76554e82c653200bfe2c2114355_JaffaCakes118.exe	94
PID 4556 wrote to memory of 4328	4556	bd87e76554e82c653200bfe2c2114355_JaffaCakes118.exe	94
PID 4556 wrote to memory of 5080	4556	bd87e76554e82c653200bfe2c2114355_JaffaCakes118.exe	97
PID 4556 wrote to memory of 5080	4556	bd87e76554e82c653200bfe2c2114355_JaffaCakes118.exe	97
PID 4556 wrote to memory of 5080	4556	bd87e76554e82c653200bfe2c2114355_JaffaCakes118.exe	97
PID 380 wrote to memory of 4056	380	kzmiutmy.exe	102
PID 380 wrote to memory of 4056	380	kzmiutmy.exe	102
PID 380 wrote to memory of 4056	380	kzmiutmy.exe	102
PID 380 wrote to memory of 4056	380	kzmiutmy.exe	102
PID 380 wrote to memory of 4056	380	kzmiutmy.exe	102

C:\Users\Admin\AppData\Local\Temp\bd87e76554e82c653200bfe2c2114355_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\bd87e76554e82c653200bfe2c2114355_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4556
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\qmgxhlc\
  2⤵
  PID:5112
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\kzmiutmy.exe" C:\Windows\SysWOW64\qmgxhlc\
  2⤵
  PID:3704
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create qmgxhlc binPath= "C:\Windows\SysWOW64\qmgxhlc\kzmiutmy.exe /d\"C:\Users\Admin\AppData\Local\Temp\bd87e76554e82c653200bfe2c2114355_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  PID:2604
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description qmgxhlc "wifi internet conection"
  2⤵
  - Launches sc.exe
  PID:2124
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start qmgxhlc
  2⤵
  - Launches sc.exe
  PID:4328
- 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:5080
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4556 -s 1208
  2⤵
  - Program crash
  PID:4972

C:\Windows\SysWOW64\qmgxhlc\kzmiutmy.exe
C:\Windows\SysWOW64\qmgxhlc\kzmiutmy.exe /d"C:\Users\Admin\AppData\Local\Temp\bd87e76554e82c653200bfe2c2114355_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:380
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  PID:4056
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 380 -s 512
  2⤵
  - Program crash
  PID:2464

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4556 -ip 4556
1⤵
PID:2344

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 496 -p 380 -ip 380
1⤵
PID:4592

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

kzmiutmy.exe

Path C:\Users\Admin\AppData\Local\Temp\kzmiutmy.exe
Size 11.2MB
SHA256 6c7a4b7c78b6f8898f6082fd7a07c358da87f4949edb739ce8ecf549cf306093
MD5 75ab93bdf8916858498682626fe8359f
SHA1 06a0e7a9d6f6658a66204979eceb64fdc2b4105c
SHA512 bb9b527dbaa5653f18784dbc2fd633232a0a8e10dc01bcb6ba35e953164939d0bb9d7cb5bb4b743be569b62607185193303b6c1a0e962dbc68678df745a118e5
SSDEEP 196608:KhKaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaf:K
MD5 SHA1 SHA512 SSDEEP

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memory/380-10-0x0000000000AA0000-0x0000000000BA0000-memory.dmp

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memory/380-17-0x0000000000400000-0x000000000086F000-memory.dmp

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memory/380-12-0x0000000000400000-0x000000000086F000-memory.dmp

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memory/4056-16-0x0000000000390000-0x00000000003A5000-memory.dmp

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memory/4056-11-0x0000000000390000-0x00000000003A5000-memory.dmp

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memory/4056-18-0x0000000000390000-0x00000000003A5000-memory.dmp

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memory/4056-19-0x0000000000390000-0x00000000003A5000-memory.dmp

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memory/4556-8-0x0000000000400000-0x000000000086F000-memory.dmp

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memory/4556-9-0x00000000001C0000-0x00000000001D3000-memory.dmp

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memory/4556-4-0x0000000000400000-0x000000000086F000-memory.dmp

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memory/4556-1-0x0000000000A70000-0x0000000000B70000-memory.dmp

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memory/4556-2-0x00000000001C0000-0x00000000001D3000-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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