tofsee | d8a443c56778c4a63c706371ba7a7314f2ca508cfcc4936b8492ad53294107b9

Analysis

max time kernel
121s
max time network
124s
platform
windows7_x64
resource
win7-20240705-en
resource tags

arch:x64arch:x86image:win7-20240705-enlocale:en-usos:windows7-x64system
submitted
18-08-2024 06:50

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General

Target

a5ca4b254625202803ca9bb51997336f_JaffaCakes118.exe
Size

143KB
MD5

a5ca4b254625202803ca9bb51997336f
SHA1

51d8c310843c2bc60f2f1e544394e9121f8678a9
SHA256

d8a443c56778c4a63c706371ba7a7314f2ca508cfcc4936b8492ad53294107b9
SHA512

9e5b57b284686468be12a2faf93043abc9f557b7e896e37736a1267c9fe4c45a7cf521095c22ddbb78c72590a2f23f5ba7d23b918adb2016a8ffa1384a76e278
SSDEEP

1536:sKadl/7kGuThiTkUBb/L45GyrjTnxStAaJIRi6JRyMZw8obp:sKadhLueL45/TnxRYUOMnobp

Score

10^/10

tofsee discovery persistence trojan

Malware Config

Extracted

Family

tofsee

64.20.54.234

rgtryhbgddtyh.biz

wertdghbyrukl.ch

Signatures

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

Deletes itself 1 IoCs

pid	Process
2300	cmd.exe

Executes dropped EXE 2 IoCs

pid	Process
2340	ryinsbh.exe
540	ryinsbh.exe

Loads dropped DLL 3 IoCs

pid	Process
1036	a5ca4b254625202803ca9bb51997336f_JaffaCakes118.exe
1036	a5ca4b254625202803ca9bb51997336f_JaffaCakes118.exe
2340	ryinsbh.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3502430532-24693940-2469786940-1000\Software\Microsoft\Windows\CurrentVersion\Run\MSConfig = "\"C:\\Users\\Admin\\ryinsbh.exe\" /r"	a5ca4b254625202803ca9bb51997336f_JaffaCakes118.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 2264 set thread context of 1036	2264	a5ca4b254625202803ca9bb51997336f_JaffaCakes118.exe	31
PID 2340 set thread context of 540	2340	ryinsbh.exe	33
PID 540 set thread context of 1644	540	ryinsbh.exe	34

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 6 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	ryinsbh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ryinsbh.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	a5ca4b254625202803ca9bb51997336f_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	a5ca4b254625202803ca9bb51997336f_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 32 IoCs

description	pid	Process	procid_target
PID 2264 wrote to memory of 1036	2264	a5ca4b254625202803ca9bb51997336f_JaffaCakes118.exe	31
PID 2264 wrote to memory of 1036	2264	a5ca4b254625202803ca9bb51997336f_JaffaCakes118.exe	31
PID 2264 wrote to memory of 1036	2264	a5ca4b254625202803ca9bb51997336f_JaffaCakes118.exe	31
PID 2264 wrote to memory of 1036	2264	a5ca4b254625202803ca9bb51997336f_JaffaCakes118.exe	31
PID 2264 wrote to memory of 1036	2264	a5ca4b254625202803ca9bb51997336f_JaffaCakes118.exe	31
PID 2264 wrote to memory of 1036	2264	a5ca4b254625202803ca9bb51997336f_JaffaCakes118.exe	31
PID 2264 wrote to memory of 1036	2264	a5ca4b254625202803ca9bb51997336f_JaffaCakes118.exe	31
PID 2264 wrote to memory of 1036	2264	a5ca4b254625202803ca9bb51997336f_JaffaCakes118.exe	31
PID 2264 wrote to memory of 1036	2264	a5ca4b254625202803ca9bb51997336f_JaffaCakes118.exe	31
PID 1036 wrote to memory of 2340	1036	a5ca4b254625202803ca9bb51997336f_JaffaCakes118.exe	32
PID 1036 wrote to memory of 2340	1036	a5ca4b254625202803ca9bb51997336f_JaffaCakes118.exe	32
PID 1036 wrote to memory of 2340	1036	a5ca4b254625202803ca9bb51997336f_JaffaCakes118.exe	32
PID 1036 wrote to memory of 2340	1036	a5ca4b254625202803ca9bb51997336f_JaffaCakes118.exe	32
PID 2340 wrote to memory of 540	2340	ryinsbh.exe	33
PID 2340 wrote to memory of 540	2340	ryinsbh.exe	33
PID 2340 wrote to memory of 540	2340	ryinsbh.exe	33
PID 2340 wrote to memory of 540	2340	ryinsbh.exe	33
PID 2340 wrote to memory of 540	2340	ryinsbh.exe	33
PID 2340 wrote to memory of 540	2340	ryinsbh.exe	33
PID 2340 wrote to memory of 540	2340	ryinsbh.exe	33
PID 2340 wrote to memory of 540	2340	ryinsbh.exe	33
PID 2340 wrote to memory of 540	2340	ryinsbh.exe	33
PID 540 wrote to memory of 1644	540	ryinsbh.exe	34
PID 540 wrote to memory of 1644	540	ryinsbh.exe	34
PID 540 wrote to memory of 1644	540	ryinsbh.exe	34
PID 540 wrote to memory of 1644	540	ryinsbh.exe	34
PID 540 wrote to memory of 1644	540	ryinsbh.exe	34
PID 540 wrote to memory of 1644	540	ryinsbh.exe	34
PID 1036 wrote to memory of 2300	1036	a5ca4b254625202803ca9bb51997336f_JaffaCakes118.exe	35
PID 1036 wrote to memory of 2300	1036	a5ca4b254625202803ca9bb51997336f_JaffaCakes118.exe	35
PID 1036 wrote to memory of 2300	1036	a5ca4b254625202803ca9bb51997336f_JaffaCakes118.exe	35
PID 1036 wrote to memory of 2300	1036	a5ca4b254625202803ca9bb51997336f_JaffaCakes118.exe	35

C:\Users\Admin\AppData\Local\Temp\a5ca4b254625202803ca9bb51997336f_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\a5ca4b254625202803ca9bb51997336f_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2264
- C:\Users\Admin\AppData\Local\Temp\a5ca4b254625202803ca9bb51997336f_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\a5ca4b254625202803ca9bb51997336f_JaffaCakes118.exe"
  2⤵
  - Loads dropped DLL
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1036
- - C:\Users\Admin\ryinsbh.exe
    "C:\Users\Admin\ryinsbh.exe" /r
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2340
  - - C:\Users\Admin\ryinsbh.exe
      "C:\Users\Admin\ryinsbh.exe" /r
      4⤵
      Executes dropped EXE
      Suspicious use of SetThreadContext
      System Location Discovery: System Language Discovery
      Suspicious use of WriteProcessMemory
      PID:540
    - - C:\Windows\SysWOW64\svchost.exe
        
        svchost.exe
        5⤵
        System Location Discovery: System Language Discovery
        
        PID:1644
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c ""C:\Users\Admin\AppData\Local\Temp\2005.bat" "
    3⤵
    - Deletes itself
    - System Location Discovery: System Language Discovery
    PID:2300

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

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\2005.bat

Filesize
117B

MD5
cdcea5a9371a9d1d2c89839986bb87b3

SHA1
29e8edd21c1f02a0868c2a13d2c006ce0b9ad95b

SHA256
412342114d6b59c1567110fabaaba15448465b5aa325a16ebfdf416970b21a95

SHA512
595843f1f6864e65130eafcea51a2d531c9aa65db07ffe86e1fe054c2d5bb1427e26335eabeec370f3630b0d8d28a1beae2d135386d23f09c23a4fce5f2bc85b

Download Submit
\Users\Admin\ryinsbh.exe

Filesize
143KB

MD5
a5ca4b254625202803ca9bb51997336f

SHA1
51d8c310843c2bc60f2f1e544394e9121f8678a9

SHA256
d8a443c56778c4a63c706371ba7a7314f2ca508cfcc4936b8492ad53294107b9

SHA512
9e5b57b284686468be12a2faf93043abc9f557b7e896e37736a1267c9fe4c45a7cf521095c22ddbb78c72590a2f23f5ba7d23b918adb2016a8ffa1384a76e278

Download Submit
memory/540-39-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/1036-10-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/1036-8-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/1036-2-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/1036-0-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/1036-14-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/1036-12-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/1036-6-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/1036-4-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/1036-64-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/1644-48-0x0000000000080000-0x0000000000090000-memory.dmp

Filesize
64KB

Download
memory/1644-53-0x0000000000090000-0x0000000000091000-memory.dmp

Filesize
4KB

Download
memory/1644-52-0x0000000000080000-0x0000000000090000-memory.dmp

Filesize
64KB

Download
memory/1644-54-0x0000000000080000-0x0000000000090000-memory.dmp

Filesize
64KB

Download
memory/1644-41-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1644-43-0x0000000000080000-0x0000000000090000-memory.dmp

Filesize
64KB

Download
memory/1644-66-0x0000000000080000-0x0000000000090000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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