tofsee | 03c3bf89ec80ccc2ebb578d871ecda58b8623d0fcaac4fc95981ea15aeaa7ba9

Analysis

max time kernel
146s
max time network
143s
platform
windows10-2004_x64
resource
win10v2004-20240704-en
resource tags

arch:x64arch:x86image:win10v2004-20240704-enlocale:en-usos:windows10-2004-x64system
submitted
05/07/2024, 14:20

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General

Target
26f79e78a4b445e1da768ce79e82c95b_JaffaCakes118.exe
Size 127KB
Sample240705-rngpyssdma
SHA256 03c3bf89ec80ccc2ebb578d871ecda58b8623d0fcaac4fc95981ea15aeaa7ba9
MD5 26f79e78a4b445e1da768ce79e82c95b
SHA1 3aedd60770c0179990df20eb9bfc81904297c10d
SHA512 ace209673d901058793d806c3d033d5c676d33898fc032b39b23f8c4a241694f0e7dba14968076494b64d4d687bd0391d69ab9689e46ef99d076a41983a94e39
SSDEEP 3072:DR9RULLkf1SfmmzUhJUVWZ3KOcPpKEK6ARbF:DZaLq1SfmmIoi6BPprKbF
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

tofsee evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

43.231.4.7
lazystax.ru

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
724	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\bmyscgoy\ImagePath = "C:\\Windows\\SysWOW64\\bmyscgoy\\ddepkljr.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-1-5-21-1015551233-1106003478-1645743776-1000\Control Panel\International\Geo\Nation	26f79e78a4b445e1da768ce79e82c95b_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
4608	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4376	ddepkljr.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4376 set thread context of 4608	4376	ddepkljr.exe	100

Launches sc.exe 3 IoCs

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

pid	Process
2968	sc.exe
3432	sc.exe
1040	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 queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
3756	4848	WerFault.exe	80
2192	4376	WerFault.exe	94

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4848 wrote to memory of 228	4848	26f79e78a4b445e1da768ce79e82c95b_JaffaCakes118.exe	84
PID 4848 wrote to memory of 228	4848	26f79e78a4b445e1da768ce79e82c95b_JaffaCakes118.exe	84
PID 4848 wrote to memory of 228	4848	26f79e78a4b445e1da768ce79e82c95b_JaffaCakes118.exe	84
PID 4848 wrote to memory of 2600	4848	26f79e78a4b445e1da768ce79e82c95b_JaffaCakes118.exe	86
PID 4848 wrote to memory of 2600	4848	26f79e78a4b445e1da768ce79e82c95b_JaffaCakes118.exe	86
PID 4848 wrote to memory of 2600	4848	26f79e78a4b445e1da768ce79e82c95b_JaffaCakes118.exe	86
PID 4848 wrote to memory of 2968	4848	26f79e78a4b445e1da768ce79e82c95b_JaffaCakes118.exe	88
PID 4848 wrote to memory of 2968	4848	26f79e78a4b445e1da768ce79e82c95b_JaffaCakes118.exe	88
PID 4848 wrote to memory of 2968	4848	26f79e78a4b445e1da768ce79e82c95b_JaffaCakes118.exe	88
PID 4848 wrote to memory of 3432	4848	26f79e78a4b445e1da768ce79e82c95b_JaffaCakes118.exe	90
PID 4848 wrote to memory of 3432	4848	26f79e78a4b445e1da768ce79e82c95b_JaffaCakes118.exe	90
PID 4848 wrote to memory of 3432	4848	26f79e78a4b445e1da768ce79e82c95b_JaffaCakes118.exe	90
PID 4848 wrote to memory of 1040	4848	26f79e78a4b445e1da768ce79e82c95b_JaffaCakes118.exe	92
PID 4848 wrote to memory of 1040	4848	26f79e78a4b445e1da768ce79e82c95b_JaffaCakes118.exe	92
PID 4848 wrote to memory of 1040	4848	26f79e78a4b445e1da768ce79e82c95b_JaffaCakes118.exe	92
PID 4848 wrote to memory of 724	4848	26f79e78a4b445e1da768ce79e82c95b_JaffaCakes118.exe	95
PID 4848 wrote to memory of 724	4848	26f79e78a4b445e1da768ce79e82c95b_JaffaCakes118.exe	95
PID 4848 wrote to memory of 724	4848	26f79e78a4b445e1da768ce79e82c95b_JaffaCakes118.exe	95
PID 4376 wrote to memory of 4608	4376	ddepkljr.exe	100
PID 4376 wrote to memory of 4608	4376	ddepkljr.exe	100
PID 4376 wrote to memory of 4608	4376	ddepkljr.exe	100
PID 4376 wrote to memory of 4608	4376	ddepkljr.exe	100
PID 4376 wrote to memory of 4608	4376	ddepkljr.exe	100

C:\Users\Admin\AppData\Local\Temp\26f79e78a4b445e1da768ce79e82c95b_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\26f79e78a4b445e1da768ce79e82c95b_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4848
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\bmyscgoy\
  2⤵
  PID:228
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ddepkljr.exe" C:\Windows\SysWOW64\bmyscgoy\
  2⤵
  PID:2600
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create bmyscgoy binPath= "C:\Windows\SysWOW64\bmyscgoy\ddepkljr.exe /d\"C:\Users\Admin\AppData\Local\Temp\26f79e78a4b445e1da768ce79e82c95b_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  PID:2968
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description bmyscgoy "wifi internet conection"
  2⤵
  - Launches sc.exe
  PID:3432
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start bmyscgoy
  2⤵
  - Launches sc.exe
  PID:1040
- 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:724
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4848 -s 1300
  2⤵
  - Program crash
  PID:3756

C:\Windows\SysWOW64\bmyscgoy\ddepkljr.exe
C:\Windows\SysWOW64\bmyscgoy\ddepkljr.exe /d"C:\Users\Admin\AppData\Local\Temp\26f79e78a4b445e1da768ce79e82c95b_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4376
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  PID:4608
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4376 -s 516
  2⤵
  - Program crash
  PID:2192

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 4848 -ip 4848
1⤵
PID:1496

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 472 -p 4376 -ip 4376
1⤵
PID:2412

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

ddepkljr.exe

Path C:\Users\Admin\AppData\Local\Temp\ddepkljr.exe
Size 14.4MB
SHA256 d012d681886e3422dc12eda82259d85a12d024fbbc21af6c007e21c72a396ddc
MD5 d97e762b68517137fc84ee0be32343c7
SHA1 b18ad73d124f20ba9ba4a2ea67c4d040a217ed09
SHA512 1f1dd30521c5688f97a73fe3dd8cd8a8f6c8e1dc3cc6eb55b48008140629b39114ba153384a8cc39b192ce28f7d7ebeed9f56002354ab8517c775ec5e45365ee
SSDEEP 3072:bR9RULLkf1SfmmzUhJUVWZ3KOcPpKEK6ARb:bZaLq1SfmmIoi6BPprKb
MD5 SHA1 SHA512 SSDEEP

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memory/4376-14-0x0000000000400000-0x00000000004CA000-memory.dmp

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memory/4376-20-0x0000000000400000-0x00000000004CA000-memory.dmp

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memory/4376-12-0x0000000000400000-0x00000000004CA000-memory.dmp

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memory/4376-13-0x0000000000400000-0x00000000004CA000-memory.dmp

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memory/4608-15-0x0000000000A40000-0x0000000000A55000-memory.dmp

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memory/4608-17-0x0000000000A40000-0x0000000000A55000-memory.dmp

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memory/4608-18-0x0000000000A40000-0x0000000000A55000-memory.dmp

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memory/4848-10-0x0000000000400000-0x0000000000415000-memory.dmp

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memory/4848-9-0x0000000000610000-0x0000000000623000-memory.dmp

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memory/4848-1-0x00000000007A0000-0x00000000008A0000-memory.dmp

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memory/4848-7-0x0000000000400000-0x00000000004CA000-memory.dmp

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memory/4848-3-0x0000000000400000-0x0000000000415000-memory.dmp

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memory/4848-2-0x0000000000610000-0x0000000000623000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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