tofsee | ab13a459f15b1c218389383542076efa884ad26d5d4898b3d1dd3ba108bfbe6e

Analysis

max time kernel
117s
max time network
119s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
21/11/2024, 03:33

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General

Target

ab13a459f15b1c218389383542076efa884ad26d5d4898b3d1dd3ba108bfbe6e.exe
Size

13.1MB
MD5

bb4ee97079a9375e48c5796cdf6b92a3
SHA1

221dc8709cc35985dbaaf43974ba3d137d1f486a
SHA256

ab13a459f15b1c218389383542076efa884ad26d5d4898b3d1dd3ba108bfbe6e
SHA512

ac910d13a6694e496d6d49a0f20598fdfdea38e09134bf08e156525f2da612e58a454142cf1fe817eb11ca1d05cbf4794db0486e54bb8b1937b08b18e08e960b
SSDEEP

393216:455555555555555555555555555555555555555555555555555555555555555k:4555555555555555555555555555555k

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

quadoil.ru

lakeflex.ru

Signatures

Tofsee
Backdoor/botnet which carries out malicious activities based on commands from a C2 server.
trojan tofsee
Tofsee family
tofsee

Windows security bypass 2 TTPs 1 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\SysWOW64\ibhgzpxv = "0"	svchost.exe

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
2820	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\ibhgzpxv\ImagePath = "C:\\Windows\\SysWOW64\\ibhgzpxv\\jyzfsdxw.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2772	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2792	jyzfsdxw.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2792 set thread context of 2772	2792	jyzfsdxw.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
2696	sc.exe
2496	sc.exe
2240	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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ab13a459f15b1c218389383542076efa884ad26d5d4898b3d1dd3ba108bfbe6e.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.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	jyzfsdxw.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2384 wrote to memory of 3032	2384	ab13a459f15b1c218389383542076efa884ad26d5d4898b3d1dd3ba108bfbe6e.exe	30
PID 2384 wrote to memory of 3032	2384	ab13a459f15b1c218389383542076efa884ad26d5d4898b3d1dd3ba108bfbe6e.exe	30
PID 2384 wrote to memory of 3032	2384	ab13a459f15b1c218389383542076efa884ad26d5d4898b3d1dd3ba108bfbe6e.exe	30
PID 2384 wrote to memory of 3032	2384	ab13a459f15b1c218389383542076efa884ad26d5d4898b3d1dd3ba108bfbe6e.exe	30
PID 2384 wrote to memory of 2128	2384	ab13a459f15b1c218389383542076efa884ad26d5d4898b3d1dd3ba108bfbe6e.exe	32
PID 2384 wrote to memory of 2128	2384	ab13a459f15b1c218389383542076efa884ad26d5d4898b3d1dd3ba108bfbe6e.exe	32
PID 2384 wrote to memory of 2128	2384	ab13a459f15b1c218389383542076efa884ad26d5d4898b3d1dd3ba108bfbe6e.exe	32
PID 2384 wrote to memory of 2128	2384	ab13a459f15b1c218389383542076efa884ad26d5d4898b3d1dd3ba108bfbe6e.exe	32
PID 2384 wrote to memory of 2496	2384	ab13a459f15b1c218389383542076efa884ad26d5d4898b3d1dd3ba108bfbe6e.exe	34
PID 2384 wrote to memory of 2496	2384	ab13a459f15b1c218389383542076efa884ad26d5d4898b3d1dd3ba108bfbe6e.exe	34
PID 2384 wrote to memory of 2496	2384	ab13a459f15b1c218389383542076efa884ad26d5d4898b3d1dd3ba108bfbe6e.exe	34
PID 2384 wrote to memory of 2496	2384	ab13a459f15b1c218389383542076efa884ad26d5d4898b3d1dd3ba108bfbe6e.exe	34
PID 2384 wrote to memory of 2240	2384	ab13a459f15b1c218389383542076efa884ad26d5d4898b3d1dd3ba108bfbe6e.exe	36
PID 2384 wrote to memory of 2240	2384	ab13a459f15b1c218389383542076efa884ad26d5d4898b3d1dd3ba108bfbe6e.exe	36
PID 2384 wrote to memory of 2240	2384	ab13a459f15b1c218389383542076efa884ad26d5d4898b3d1dd3ba108bfbe6e.exe	36
PID 2384 wrote to memory of 2240	2384	ab13a459f15b1c218389383542076efa884ad26d5d4898b3d1dd3ba108bfbe6e.exe	36
PID 2384 wrote to memory of 2696	2384	ab13a459f15b1c218389383542076efa884ad26d5d4898b3d1dd3ba108bfbe6e.exe	38
PID 2384 wrote to memory of 2696	2384	ab13a459f15b1c218389383542076efa884ad26d5d4898b3d1dd3ba108bfbe6e.exe	38
PID 2384 wrote to memory of 2696	2384	ab13a459f15b1c218389383542076efa884ad26d5d4898b3d1dd3ba108bfbe6e.exe	38
PID 2384 wrote to memory of 2696	2384	ab13a459f15b1c218389383542076efa884ad26d5d4898b3d1dd3ba108bfbe6e.exe	38
PID 2384 wrote to memory of 2820	2384	ab13a459f15b1c218389383542076efa884ad26d5d4898b3d1dd3ba108bfbe6e.exe	41
PID 2384 wrote to memory of 2820	2384	ab13a459f15b1c218389383542076efa884ad26d5d4898b3d1dd3ba108bfbe6e.exe	41
PID 2384 wrote to memory of 2820	2384	ab13a459f15b1c218389383542076efa884ad26d5d4898b3d1dd3ba108bfbe6e.exe	41
PID 2384 wrote to memory of 2820	2384	ab13a459f15b1c218389383542076efa884ad26d5d4898b3d1dd3ba108bfbe6e.exe	41
PID 2792 wrote to memory of 2772	2792	jyzfsdxw.exe	43
PID 2792 wrote to memory of 2772	2792	jyzfsdxw.exe	43
PID 2792 wrote to memory of 2772	2792	jyzfsdxw.exe	43
PID 2792 wrote to memory of 2772	2792	jyzfsdxw.exe	43
PID 2792 wrote to memory of 2772	2792	jyzfsdxw.exe	43
PID 2792 wrote to memory of 2772	2792	jyzfsdxw.exe	43

C:\Users\Admin\AppData\Local\Temp\ab13a459f15b1c218389383542076efa884ad26d5d4898b3d1dd3ba108bfbe6e.exe
"C:\Users\Admin\AppData\Local\Temp\ab13a459f15b1c218389383542076efa884ad26d5d4898b3d1dd3ba108bfbe6e.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2384
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ibhgzpxv\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3032
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\jyzfsdxw.exe" C:\Windows\SysWOW64\ibhgzpxv\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2128
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create ibhgzpxv binPath= "C:\Windows\SysWOW64\ibhgzpxv\jyzfsdxw.exe /d\"C:\Users\Admin\AppData\Local\Temp\ab13a459f15b1c218389383542076efa884ad26d5d4898b3d1dd3ba108bfbe6e.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2496
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description ibhgzpxv "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2240
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start ibhgzpxv
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2696
- 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:2820

C:\Windows\SysWOW64\ibhgzpxv\jyzfsdxw.exe
C:\Windows\SysWOW64\ibhgzpxv\jyzfsdxw.exe /d"C:\Users\Admin\AppData\Local\Temp\ab13a459f15b1c218389383542076efa884ad26d5d4898b3d1dd3ba108bfbe6e.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2792
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Windows security bypass
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2772

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

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Credential Access

Discovery

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

C:\Users\Admin\AppData\Local\Temp\jyzfsdxw.exe

Filesize
10.6MB

MD5
44df99f2aed4fa238b583f5d702c63e5

SHA1
406b531396d185aee57593afde8ae9732a016373

SHA256
98dfa57918ce8df475fc63fdd1df2a46ae21f236ec7c71d84015c32444239070

SHA512
796e5d38e84cf8cd755d23bd533611a35e7434a34ac4362d9361a331b9649003af6dece08a4ef0401234691b552714028f919350d93020b25214d6d1dc56d6b4

Download Submit
memory/2384-11-0x0000000000580000-0x0000000000680000-memory.dmp

Filesize
1024KB

Download
memory/2384-4-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2384-2-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2384-9-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2384-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2384-1-0x0000000000580000-0x0000000000680000-memory.dmp

Filesize
1024KB

Download
memory/2772-12-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2772-14-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2772-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2772-15-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2772-19-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2792-18-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads