tofsee | 3e126f15e4c7dbfee20721b323e5788742c63d9935e8eb6a01b432df3ff17a2c

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240709-en
resource tags

arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
submitted
17/07/2024, 20:04

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General

Target
5493970c06b98da67f686ecce0b32216_JaffaCakes118.exe
Size 10.9MB
Sample240717-ytmayszerh
SHA256 3e126f15e4c7dbfee20721b323e5788742c63d9935e8eb6a01b432df3ff17a2c
MD5 5493970c06b98da67f686ecce0b32216
SHA1 d7d319a8ab82614061b4e6baacae669abad81bc9
SHA512 f845799e953300b0223b2325af61b105bb85eddf1c95d87a33f64601870a99b05341b47418be2831a871e05c08ae0cafa075dbdb1f0ea51c9945fc5f77f7e34e
SSDEEP 196608:a5qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqX:a
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

tofsee evasion execution persistence privilege_escalation 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) 2 TTPs
persistence execution

Windows Service
T1543.003

Service Execution
T1569.002

Modifies Windows Firewall 2 TTPs 1 IoCs

evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
2940	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\tccjflgr\ImagePath = "C:\\Windows\\SysWOW64\\tccjflgr\\kaaapgme.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-1-5-21-1705699165-553239100-4129523827-1000\Control Panel\International\Geo\Nation	5493970c06b98da67f686ecce0b32216_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
4764	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
5060	kaaapgme.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 5060 set thread context of 4764	5060	kaaapgme.exe	107

Launches sc.exe 3 IoCs

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

pid	Process
1520	sc.exe
3800	sc.exe
3492	sc.exe

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

System Information Discovery
T1082

Event Triggered Execution: Netsh Helper DLL 1 TTPs 3 IoCs

Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.

persistence privilege_escalation

Netsh Helper DLL

T1546.007

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
4260	1596	WerFault.exe	83
864	5060	WerFault.exe	99

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1596 wrote to memory of 1768	1596	5493970c06b98da67f686ecce0b32216_JaffaCakes118.exe	87
PID 1596 wrote to memory of 1768	1596	5493970c06b98da67f686ecce0b32216_JaffaCakes118.exe	87
PID 1596 wrote to memory of 1768	1596	5493970c06b98da67f686ecce0b32216_JaffaCakes118.exe	87
PID 1596 wrote to memory of 2808	1596	5493970c06b98da67f686ecce0b32216_JaffaCakes118.exe	89
PID 1596 wrote to memory of 2808	1596	5493970c06b98da67f686ecce0b32216_JaffaCakes118.exe	89
PID 1596 wrote to memory of 2808	1596	5493970c06b98da67f686ecce0b32216_JaffaCakes118.exe	89
PID 1596 wrote to memory of 1520	1596	5493970c06b98da67f686ecce0b32216_JaffaCakes118.exe	91
PID 1596 wrote to memory of 1520	1596	5493970c06b98da67f686ecce0b32216_JaffaCakes118.exe	91
PID 1596 wrote to memory of 1520	1596	5493970c06b98da67f686ecce0b32216_JaffaCakes118.exe	91
PID 1596 wrote to memory of 3800	1596	5493970c06b98da67f686ecce0b32216_JaffaCakes118.exe	95
PID 1596 wrote to memory of 3800	1596	5493970c06b98da67f686ecce0b32216_JaffaCakes118.exe	95
PID 1596 wrote to memory of 3800	1596	5493970c06b98da67f686ecce0b32216_JaffaCakes118.exe	95
PID 1596 wrote to memory of 3492	1596	5493970c06b98da67f686ecce0b32216_JaffaCakes118.exe	97
PID 1596 wrote to memory of 3492	1596	5493970c06b98da67f686ecce0b32216_JaffaCakes118.exe	97
PID 1596 wrote to memory of 3492	1596	5493970c06b98da67f686ecce0b32216_JaffaCakes118.exe	97
PID 1596 wrote to memory of 2940	1596	5493970c06b98da67f686ecce0b32216_JaffaCakes118.exe	100
PID 1596 wrote to memory of 2940	1596	5493970c06b98da67f686ecce0b32216_JaffaCakes118.exe	100
PID 1596 wrote to memory of 2940	1596	5493970c06b98da67f686ecce0b32216_JaffaCakes118.exe	100
PID 5060 wrote to memory of 4764	5060	kaaapgme.exe	107
PID 5060 wrote to memory of 4764	5060	kaaapgme.exe	107
PID 5060 wrote to memory of 4764	5060	kaaapgme.exe	107
PID 5060 wrote to memory of 4764	5060	kaaapgme.exe	107
PID 5060 wrote to memory of 4764	5060	kaaapgme.exe	107

C:\Users\Admin\AppData\Local\Temp\5493970c06b98da67f686ecce0b32216_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\5493970c06b98da67f686ecce0b32216_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1596
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\tccjflgr\
  2⤵
  PID:1768
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\kaaapgme.exe" C:\Windows\SysWOW64\tccjflgr\
  2⤵
  PID:2808
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create tccjflgr binPath= "C:\Windows\SysWOW64\tccjflgr\kaaapgme.exe /d\"C:\Users\Admin\AppData\Local\Temp\5493970c06b98da67f686ecce0b32216_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  PID:1520
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description tccjflgr "wifi internet conection"
  2⤵
  - Launches sc.exe
  PID:3800
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start tccjflgr
  2⤵
  - Launches sc.exe
  PID:3492
- 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
  - Event Triggered Execution: Netsh Helper DLL
  PID:2940
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1596 -s 1036
  2⤵
  - Program crash
  PID:4260

C:\Windows\SysWOW64\tccjflgr\kaaapgme.exe
C:\Windows\SysWOW64\tccjflgr\kaaapgme.exe /d"C:\Users\Admin\AppData\Local\Temp\5493970c06b98da67f686ecce0b32216_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:5060
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  PID:4764
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 5060 -s 532
  2⤵
  - Program crash
  PID:864

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 1596 -ip 1596
1⤵
PID:3848

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 5060 -ip 5060
1⤵
PID:1580

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

System Services

T1569

Service Execution

T1569.002

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

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

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

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

kaaapgme.exe

Path C:\Users\Admin\AppData\Local\Temp\kaaapgme.exe
Size 12.1MB
SHA256 7368018ea964b570bb842fa862004b78308c105751a7cbfa59ed7d934a702fc9
MD5 63115f8d1de4368ce71165f9919d17e3
SHA1 c49bd104201bdef9f5412da325145623a71f7174
SHA512 809e73734b4c05c47778076915c9718e75394e11c38b2288ffd570b01635559d6e95b151853fa3a3de246ee622acf0c82261e6d15f567f8a5e7a4d32fec84629
SSDEEP 196608:15qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqf:1
MD5 SHA1 SHA512 SSDEEP

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memory/1596-8-0x0000000000400000-0x0000000000871000-memory.dmp

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memory/1596-4-0x0000000000400000-0x0000000000415000-memory.dmp

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memory/1596-2-0x00000000001E0000-0x00000000001F3000-memory.dmp

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memory/1596-10-0x0000000000400000-0x0000000000415000-memory.dmp

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memory/1596-9-0x00000000001E0000-0x00000000001F3000-memory.dmp

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memory/1596-1-0x0000000000BC0000-0x0000000000CC0000-memory.dmp

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memory/4764-14-0x0000000000650000-0x0000000000665000-memory.dmp

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memory/4764-16-0x0000000000650000-0x0000000000665000-memory.dmp

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memory/4764-17-0x0000000000650000-0x0000000000665000-memory.dmp

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memory/5060-11-0x0000000000400000-0x0000000000871000-memory.dmp

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memory/5060-12-0x0000000000400000-0x0000000000871000-memory.dmp

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memory/5060-13-0x0000000000400000-0x0000000000871000-memory.dmp

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memory/5060-18-0x0000000000400000-0x0000000000871000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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