tofsee | b7fc34b820ed7dba076002a3184b3e3daf81c373561118247e36d0a526b133ec

Analysis

max time kernel
145s
max time network
144s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
22-12-2024 05:07

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General

Target

JaffaCakes118_b7fc34b820ed7dba076002a3184b3e3daf81c373561118247e36d0a526b133ec.exe
Size

271KB
MD5

ab58855438cfb9ba9858155da922160f
SHA1

24636dcae28bc4ccfcbe0a000105d864ed93165a
SHA256

b7fc34b820ed7dba076002a3184b3e3daf81c373561118247e36d0a526b133ec
SHA512

beccbedd5849a769b05bd30b24f140fd77bf9b880d3d6d3b0f41bb27607d146b89ecc05f19d2931a3d55a91b822c21f08e8e5591ea6df22bfce527f214c5ce32
SSDEEP

6144:LlCFmeSE23mKALze0gCCyKgBjigjlfst0kUqfVHK:4wE23mKALNvCzgBjtj1sxhf

Score

10^/10

tofsee discovery 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
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\txeihgz = "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\txeihgz\ImagePath = "C:\\Windows\\SysWOW64\\txeihgz\\tyumknz.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2652	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2744	tyumknz.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2744 set thread context of 2652	2744	tyumknz.exe	44

Launches sc.exe 3 IoCs

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

pid	Process
2384	sc.exe
2680	sc.exe
2748	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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_b7fc34b820ed7dba076002a3184b3e3daf81c373561118247e36d0a526b133ec.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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	tyumknz.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2128 wrote to memory of 2496	2128	JaffaCakes118_b7fc34b820ed7dba076002a3184b3e3daf81c373561118247e36d0a526b133ec.exe	31
PID 2128 wrote to memory of 2496	2128	JaffaCakes118_b7fc34b820ed7dba076002a3184b3e3daf81c373561118247e36d0a526b133ec.exe	31
PID 2128 wrote to memory of 2496	2128	JaffaCakes118_b7fc34b820ed7dba076002a3184b3e3daf81c373561118247e36d0a526b133ec.exe	31
PID 2128 wrote to memory of 2496	2128	JaffaCakes118_b7fc34b820ed7dba076002a3184b3e3daf81c373561118247e36d0a526b133ec.exe	31
PID 2128 wrote to memory of 2412	2128	JaffaCakes118_b7fc34b820ed7dba076002a3184b3e3daf81c373561118247e36d0a526b133ec.exe	33
PID 2128 wrote to memory of 2412	2128	JaffaCakes118_b7fc34b820ed7dba076002a3184b3e3daf81c373561118247e36d0a526b133ec.exe	33
PID 2128 wrote to memory of 2412	2128	JaffaCakes118_b7fc34b820ed7dba076002a3184b3e3daf81c373561118247e36d0a526b133ec.exe	33
PID 2128 wrote to memory of 2412	2128	JaffaCakes118_b7fc34b820ed7dba076002a3184b3e3daf81c373561118247e36d0a526b133ec.exe	33
PID 2128 wrote to memory of 2384	2128	JaffaCakes118_b7fc34b820ed7dba076002a3184b3e3daf81c373561118247e36d0a526b133ec.exe	35
PID 2128 wrote to memory of 2384	2128	JaffaCakes118_b7fc34b820ed7dba076002a3184b3e3daf81c373561118247e36d0a526b133ec.exe	35
PID 2128 wrote to memory of 2384	2128	JaffaCakes118_b7fc34b820ed7dba076002a3184b3e3daf81c373561118247e36d0a526b133ec.exe	35
PID 2128 wrote to memory of 2384	2128	JaffaCakes118_b7fc34b820ed7dba076002a3184b3e3daf81c373561118247e36d0a526b133ec.exe	35
PID 2128 wrote to memory of 2680	2128	JaffaCakes118_b7fc34b820ed7dba076002a3184b3e3daf81c373561118247e36d0a526b133ec.exe	37
PID 2128 wrote to memory of 2680	2128	JaffaCakes118_b7fc34b820ed7dba076002a3184b3e3daf81c373561118247e36d0a526b133ec.exe	37
PID 2128 wrote to memory of 2680	2128	JaffaCakes118_b7fc34b820ed7dba076002a3184b3e3daf81c373561118247e36d0a526b133ec.exe	37
PID 2128 wrote to memory of 2680	2128	JaffaCakes118_b7fc34b820ed7dba076002a3184b3e3daf81c373561118247e36d0a526b133ec.exe	37
PID 2128 wrote to memory of 2748	2128	JaffaCakes118_b7fc34b820ed7dba076002a3184b3e3daf81c373561118247e36d0a526b133ec.exe	39
PID 2128 wrote to memory of 2748	2128	JaffaCakes118_b7fc34b820ed7dba076002a3184b3e3daf81c373561118247e36d0a526b133ec.exe	39
PID 2128 wrote to memory of 2748	2128	JaffaCakes118_b7fc34b820ed7dba076002a3184b3e3daf81c373561118247e36d0a526b133ec.exe	39
PID 2128 wrote to memory of 2748	2128	JaffaCakes118_b7fc34b820ed7dba076002a3184b3e3daf81c373561118247e36d0a526b133ec.exe	39
PID 2128 wrote to memory of 2684	2128	JaffaCakes118_b7fc34b820ed7dba076002a3184b3e3daf81c373561118247e36d0a526b133ec.exe	42
PID 2128 wrote to memory of 2684	2128	JaffaCakes118_b7fc34b820ed7dba076002a3184b3e3daf81c373561118247e36d0a526b133ec.exe	42
PID 2128 wrote to memory of 2684	2128	JaffaCakes118_b7fc34b820ed7dba076002a3184b3e3daf81c373561118247e36d0a526b133ec.exe	42
PID 2128 wrote to memory of 2684	2128	JaffaCakes118_b7fc34b820ed7dba076002a3184b3e3daf81c373561118247e36d0a526b133ec.exe	42
PID 2744 wrote to memory of 2652	2744	tyumknz.exe	44
PID 2744 wrote to memory of 2652	2744	tyumknz.exe	44
PID 2744 wrote to memory of 2652	2744	tyumknz.exe	44
PID 2744 wrote to memory of 2652	2744	tyumknz.exe	44
PID 2744 wrote to memory of 2652	2744	tyumknz.exe	44
PID 2744 wrote to memory of 2652	2744	tyumknz.exe	44

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_b7fc34b820ed7dba076002a3184b3e3daf81c373561118247e36d0a526b133ec.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_b7fc34b820ed7dba076002a3184b3e3daf81c373561118247e36d0a526b133ec.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2128
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\txeihgz\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2496
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\tyumknz.exe" C:\Windows\SysWOW64\txeihgz\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2412
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create txeihgz binPath= "C:\Windows\SysWOW64\txeihgz\tyumknz.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_b7fc34b820ed7dba076002a3184b3e3daf81c373561118247e36d0a526b133ec.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2384
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description txeihgz "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2680
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start txeihgz
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2748
- 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\txeihgz\tyumknz.exe
C:\Windows\SysWOW64\txeihgz\tyumknz.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_b7fc34b820ed7dba076002a3184b3e3daf81c373561118247e36d0a526b133ec.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2744
- 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:2652

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\tyumknz.exe

Filesize
14.8MB

MD5
61d91c3830b9651376a561bae48bb708

SHA1
ef6b1bc351507a22a07d48c9b6c3cb439dd90ddd

SHA256
a11aa4fb82c0abb00b6728da796f52e4be6c69fc6aa2d968c6210ce2936454a4

SHA512
0462a330f1d26d7d832e56c57c76ea3dd6fe23ae39d751a5a4413de5b43a8ce3f84b131b5f398dcbae1c8410a0fe42d4eec7e6f5c88aebb5bfd68c517ac870be

Download Submit
memory/2128-8-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/2128-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2128-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2128-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2128-9-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2128-1-0x0000000000230000-0x0000000000330000-memory.dmp

Filesize
1024KB

Download
memory/2652-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2652-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2652-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2652-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2652-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2744-15-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads