tofsee | 5c6262f8a6ce018b6eb32110edc0d2bdc96dfd2be9abbda9d03f10debd44d89c

Analysis

max time kernel
148s
max time network
144s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
08/12/2024, 11:30

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General

Target
d6d1db29d6685c7254f3d24fcb5d918b_JaffaCakes118.exe
Size 10.5MB
Sample241208-nl6phsskhs
SHA256 5c6262f8a6ce018b6eb32110edc0d2bdc96dfd2be9abbda9d03f10debd44d89c
MD5 d6d1db29d6685c7254f3d24fcb5d918b
SHA1 3d0b536bbebf8b982570a7f020419b52eec8abc3
SHA512 6cf3fa8c045b1bf76b6a47f3901898c30390665e7e052d78bf3df4fb8477a1326bd10ba1578cf4d77a56284caf9d593b6bacb298a50c4cf822b5ca09e86e7cf2
SSDEEP 98304:LYTPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPf:L
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

43.231.4.6
lazystax.ru

Signatures

Tofsee
Backdoor/botnet which carries out malicious activities based on commands from a C2 server.
trojan tofsee
Tofsee family
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
2404	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\bwdsffzs\ImagePath = "C:\\Windows\\SysWOW64\\bwdsffzs\\okcairum.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-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	d6d1db29d6685c7254f3d24fcb5d918b_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
2444	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3320	okcairum.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3320 set thread context of 2444	3320	okcairum.exe	95

Launches sc.exe 3 IoCs

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

pid	Process
1340	sc.exe
4580	sc.exe
856	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

System Location Discovery: System Language Discovery 1 TTPs 9 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	okcairum.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	d6d1db29d6685c7254f3d24fcb5d918b_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 696 wrote to memory of 2940	696	d6d1db29d6685c7254f3d24fcb5d918b_JaffaCakes118.exe	82
PID 696 wrote to memory of 2940	696	d6d1db29d6685c7254f3d24fcb5d918b_JaffaCakes118.exe	82
PID 696 wrote to memory of 2940	696	d6d1db29d6685c7254f3d24fcb5d918b_JaffaCakes118.exe	82
PID 696 wrote to memory of 1692	696	d6d1db29d6685c7254f3d24fcb5d918b_JaffaCakes118.exe	84
PID 696 wrote to memory of 1692	696	d6d1db29d6685c7254f3d24fcb5d918b_JaffaCakes118.exe	84
PID 696 wrote to memory of 1692	696	d6d1db29d6685c7254f3d24fcb5d918b_JaffaCakes118.exe	84
PID 696 wrote to memory of 1340	696	d6d1db29d6685c7254f3d24fcb5d918b_JaffaCakes118.exe	86
PID 696 wrote to memory of 1340	696	d6d1db29d6685c7254f3d24fcb5d918b_JaffaCakes118.exe	86
PID 696 wrote to memory of 1340	696	d6d1db29d6685c7254f3d24fcb5d918b_JaffaCakes118.exe	86
PID 696 wrote to memory of 4580	696	d6d1db29d6685c7254f3d24fcb5d918b_JaffaCakes118.exe	88
PID 696 wrote to memory of 4580	696	d6d1db29d6685c7254f3d24fcb5d918b_JaffaCakes118.exe	88
PID 696 wrote to memory of 4580	696	d6d1db29d6685c7254f3d24fcb5d918b_JaffaCakes118.exe	88
PID 696 wrote to memory of 856	696	d6d1db29d6685c7254f3d24fcb5d918b_JaffaCakes118.exe	90
PID 696 wrote to memory of 856	696	d6d1db29d6685c7254f3d24fcb5d918b_JaffaCakes118.exe	90
PID 696 wrote to memory of 856	696	d6d1db29d6685c7254f3d24fcb5d918b_JaffaCakes118.exe	90
PID 696 wrote to memory of 2404	696	d6d1db29d6685c7254f3d24fcb5d918b_JaffaCakes118.exe	93
PID 696 wrote to memory of 2404	696	d6d1db29d6685c7254f3d24fcb5d918b_JaffaCakes118.exe	93
PID 696 wrote to memory of 2404	696	d6d1db29d6685c7254f3d24fcb5d918b_JaffaCakes118.exe	93
PID 3320 wrote to memory of 2444	3320	okcairum.exe	95
PID 3320 wrote to memory of 2444	3320	okcairum.exe	95
PID 3320 wrote to memory of 2444	3320	okcairum.exe	95
PID 3320 wrote to memory of 2444	3320	okcairum.exe	95
PID 3320 wrote to memory of 2444	3320	okcairum.exe	95

C:\Users\Admin\AppData\Local\Temp\d6d1db29d6685c7254f3d24fcb5d918b_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\d6d1db29d6685c7254f3d24fcb5d918b_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:696
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\bwdsffzs\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2940
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\okcairum.exe" C:\Windows\SysWOW64\bwdsffzs\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1692
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create bwdsffzs binPath= "C:\Windows\SysWOW64\bwdsffzs\okcairum.exe /d\"C:\Users\Admin\AppData\Local\Temp\d6d1db29d6685c7254f3d24fcb5d918b_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1340
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description bwdsffzs "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4580
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start bwdsffzs
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:856
- 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
  - System Location Discovery: System Language Discovery
  PID:2404

C:\Windows\SysWOW64\bwdsffzs\okcairum.exe
C:\Windows\SysWOW64\bwdsffzs\okcairum.exe /d"C:\Users\Admin\AppData\Local\Temp\d6d1db29d6685c7254f3d24fcb5d918b_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3320
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2444

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

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

okcairum.exe

Path C:\Users\Admin\AppData\Local\Temp\okcairum.exe
Size 10.1MB
SHA256 1aee6a5bcf5228486fc5cb5e14a547ba8874a409a930a407c366c6794a586d7a
MD5 b5499023bec1ab1093f9a5ebc8b494dc
SHA1 0fdef03dbf650bdb19080042bc0704c92e315a49
SHA512 4d8cf6ff7ee9b1650491671c73a7e0b2732c85265495f8a722421a011b48228d95fc8055e97e2c8c9fac082cd475a955894cfc265aed0d86fd85aa3cc8c1984f
SSDEEP 98304:YYTPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPv:Y
MD5 SHA1 SHA512 SSDEEP

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memory/696-1-0x0000000000EF0000-0x0000000000FF0000-memory.dmp

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memory/696-2-0x0000000000E70000-0x0000000000E83000-memory.dmp

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memory/696-3-0x0000000000400000-0x0000000000415000-memory.dmp

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memory/696-7-0x0000000000400000-0x0000000000C17000-memory.dmp

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memory/696-9-0x0000000000400000-0x0000000000415000-memory.dmp

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memory/696-8-0x0000000000E70000-0x0000000000E83000-memory.dmp

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memory/2444-11-0x00000000004C0000-0x00000000004D5000-memory.dmp

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memory/2444-13-0x00000000004C0000-0x00000000004D5000-memory.dmp

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memory/2444-15-0x00000000004C0000-0x00000000004D5000-memory.dmp

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memory/3320-14-0x0000000000400000-0x0000000000C17000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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