tofsee | b6ae7251deb7aa169a16112515e94ac61942559ceeb2451c7c9c743214fef37e

Analysis

max time kernel
149s
max time network
149s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
29-12-2024 06:51

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General

Target

JaffaCakes118_b6ae7251deb7aa169a16112515e94ac61942559ceeb2451c7c9c743214fef37e.exe
Size

246KB
MD5

3ad9b12cbfa962da1d348b26cedb62be
SHA1

3d0044c9f144ce76e2301c0c3a6ae2bd391de740
SHA256

b6ae7251deb7aa169a16112515e94ac61942559ceeb2451c7c9c743214fef37e
SHA512

1cd52b441343c71f6638dcacd2731ed415b53a271b2c064e3ea769ebdee371f52793d35bf75a77e093107b48ed1d71c6570010f25f7d4cefc4d39ffdc3b11b71
SSDEEP

3072:g7Jxh2xryErd36x5I2b2VpN7O+NIjzit/WrxpzbgqruXhs7sxkgaBChU/pZa9uDB:+2xmE56x5IXmiRuzbgwu6QigabwVf

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\oexzwhzn = "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
2684	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\oexzwhzn\ImagePath = "C:\\Windows\\SysWOW64\\oexzwhzn\\xywgjchs.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2208	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2668	xywgjchs.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2668 set thread context of 2208	2668	xywgjchs.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
1484	sc.exe
2692	sc.exe
1240	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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_b6ae7251deb7aa169a16112515e94ac61942559ceeb2451c7c9c743214fef37e.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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	xywgjchs.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2872 wrote to memory of 2820	2872	JaffaCakes118_b6ae7251deb7aa169a16112515e94ac61942559ceeb2451c7c9c743214fef37e.exe	30
PID 2872 wrote to memory of 2820	2872	JaffaCakes118_b6ae7251deb7aa169a16112515e94ac61942559ceeb2451c7c9c743214fef37e.exe	30
PID 2872 wrote to memory of 2820	2872	JaffaCakes118_b6ae7251deb7aa169a16112515e94ac61942559ceeb2451c7c9c743214fef37e.exe	30
PID 2872 wrote to memory of 2820	2872	JaffaCakes118_b6ae7251deb7aa169a16112515e94ac61942559ceeb2451c7c9c743214fef37e.exe	30
PID 2872 wrote to memory of 2088	2872	JaffaCakes118_b6ae7251deb7aa169a16112515e94ac61942559ceeb2451c7c9c743214fef37e.exe	32
PID 2872 wrote to memory of 2088	2872	JaffaCakes118_b6ae7251deb7aa169a16112515e94ac61942559ceeb2451c7c9c743214fef37e.exe	32
PID 2872 wrote to memory of 2088	2872	JaffaCakes118_b6ae7251deb7aa169a16112515e94ac61942559ceeb2451c7c9c743214fef37e.exe	32
PID 2872 wrote to memory of 2088	2872	JaffaCakes118_b6ae7251deb7aa169a16112515e94ac61942559ceeb2451c7c9c743214fef37e.exe	32
PID 2872 wrote to memory of 1484	2872	JaffaCakes118_b6ae7251deb7aa169a16112515e94ac61942559ceeb2451c7c9c743214fef37e.exe	34
PID 2872 wrote to memory of 1484	2872	JaffaCakes118_b6ae7251deb7aa169a16112515e94ac61942559ceeb2451c7c9c743214fef37e.exe	34
PID 2872 wrote to memory of 1484	2872	JaffaCakes118_b6ae7251deb7aa169a16112515e94ac61942559ceeb2451c7c9c743214fef37e.exe	34
PID 2872 wrote to memory of 1484	2872	JaffaCakes118_b6ae7251deb7aa169a16112515e94ac61942559ceeb2451c7c9c743214fef37e.exe	34
PID 2872 wrote to memory of 2692	2872	JaffaCakes118_b6ae7251deb7aa169a16112515e94ac61942559ceeb2451c7c9c743214fef37e.exe	36
PID 2872 wrote to memory of 2692	2872	JaffaCakes118_b6ae7251deb7aa169a16112515e94ac61942559ceeb2451c7c9c743214fef37e.exe	36
PID 2872 wrote to memory of 2692	2872	JaffaCakes118_b6ae7251deb7aa169a16112515e94ac61942559ceeb2451c7c9c743214fef37e.exe	36
PID 2872 wrote to memory of 2692	2872	JaffaCakes118_b6ae7251deb7aa169a16112515e94ac61942559ceeb2451c7c9c743214fef37e.exe	36
PID 2872 wrote to memory of 1240	2872	JaffaCakes118_b6ae7251deb7aa169a16112515e94ac61942559ceeb2451c7c9c743214fef37e.exe	38
PID 2872 wrote to memory of 1240	2872	JaffaCakes118_b6ae7251deb7aa169a16112515e94ac61942559ceeb2451c7c9c743214fef37e.exe	38
PID 2872 wrote to memory of 1240	2872	JaffaCakes118_b6ae7251deb7aa169a16112515e94ac61942559ceeb2451c7c9c743214fef37e.exe	38
PID 2872 wrote to memory of 1240	2872	JaffaCakes118_b6ae7251deb7aa169a16112515e94ac61942559ceeb2451c7c9c743214fef37e.exe	38
PID 2872 wrote to memory of 2684	2872	JaffaCakes118_b6ae7251deb7aa169a16112515e94ac61942559ceeb2451c7c9c743214fef37e.exe	41
PID 2872 wrote to memory of 2684	2872	JaffaCakes118_b6ae7251deb7aa169a16112515e94ac61942559ceeb2451c7c9c743214fef37e.exe	41
PID 2872 wrote to memory of 2684	2872	JaffaCakes118_b6ae7251deb7aa169a16112515e94ac61942559ceeb2451c7c9c743214fef37e.exe	41
PID 2872 wrote to memory of 2684	2872	JaffaCakes118_b6ae7251deb7aa169a16112515e94ac61942559ceeb2451c7c9c743214fef37e.exe	41
PID 2668 wrote to memory of 2208	2668	xywgjchs.exe	43
PID 2668 wrote to memory of 2208	2668	xywgjchs.exe	43
PID 2668 wrote to memory of 2208	2668	xywgjchs.exe	43
PID 2668 wrote to memory of 2208	2668	xywgjchs.exe	43
PID 2668 wrote to memory of 2208	2668	xywgjchs.exe	43
PID 2668 wrote to memory of 2208	2668	xywgjchs.exe	43

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_b6ae7251deb7aa169a16112515e94ac61942559ceeb2451c7c9c743214fef37e.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_b6ae7251deb7aa169a16112515e94ac61942559ceeb2451c7c9c743214fef37e.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2872
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\oexzwhzn\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2820
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\xywgjchs.exe" C:\Windows\SysWOW64\oexzwhzn\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2088
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create oexzwhzn binPath= "C:\Windows\SysWOW64\oexzwhzn\xywgjchs.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_b6ae7251deb7aa169a16112515e94ac61942559ceeb2451c7c9c743214fef37e.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1484
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description oexzwhzn "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2692
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start oexzwhzn
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1240
- 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:2684

C:\Windows\SysWOW64\oexzwhzn\xywgjchs.exe
C:\Windows\SysWOW64\oexzwhzn\xywgjchs.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_b6ae7251deb7aa169a16112515e94ac61942559ceeb2451c7c9c743214fef37e.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2668
- 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:2208

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\xywgjchs.exe

Filesize
10.1MB

MD5
9b907fead78292c56a30dcfe34dbd456

SHA1
517ab0dcc3570bea7ddfe92530fcb2376cccac6c

SHA256
0929d4b1f1bee9f4aeb7fa8c9a02e628e748accfb59edf783ec377db76eeb43a

SHA512
c5ac5073e798ac109960e24c1736003440dd619f63a45f964c9429a6c9e1d61b22aeb14ca7ffebeafd1f3f058c5c0e61d6ed73b918f41c87c35b0ce2d1b52fe0

Download Submit
memory/2208-13-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2208-12-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2208-10-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2208-15-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2208-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2668-16-0x0000000000400000-0x0000000000447000-memory.dmp

Filesize
284KB

Download
memory/2872-2-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2872-1-0x0000000000230000-0x0000000000243000-memory.dmp

Filesize
76KB

Download
memory/2872-7-0x0000000000230000-0x0000000000243000-memory.dmp

Filesize
76KB

Download
memory/2872-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2872-8-0x0000000000220000-0x000000000022D000-memory.dmp

Filesize
52KB

Download
memory/2872-6-0x0000000000400000-0x0000000000447000-memory.dmp

Filesize
284KB

Download
memory/2872-0-0x0000000000220000-0x000000000022D000-memory.dmp

Filesize
52KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads