tofsee | 17f96397035fded780c11562876cd455b635d98255f2052912afcd113c1a55d6

Analysis

max time kernel
117s
max time network
118s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
09-09-2024 04:06

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General

Target

d5a0f6baebe6f4bf5658d38c18d34ec8_JaffaCakes118.exe
Size

99KB
MD5

d5a0f6baebe6f4bf5658d38c18d34ec8
SHA1

6bcbb00faec744ff0a4d6d141071eef2baa70769
SHA256

17f96397035fded780c11562876cd455b635d98255f2052912afcd113c1a55d6
SHA512

e5342e1acb9967ec02cb935e413c91726c4005f217120112d5ccc56e11a82a3805673a4c13fff6e1ce808e84ea83e294d89590f02feb04f388f8cff2755aefcc
SSDEEP

1536:lidHJUw2UZ2RbwbU6Pn1SNHe4HVpHe6B2V8oLMb1Zb4aaGw:loCGUe1SNHe4HVp+rVpLW4pGw

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

Processes:

cmd.exe

pid	Process
2112	cmd.exe

Executes dropped EXE 2 IoCs

Processes:

eoukqpr.exeeoukqpr.exe

pid	Process
2296	eoukqpr.exe
2240	eoukqpr.exe

Loads dropped DLL 2 IoCs

Processes:

d5a0f6baebe6f4bf5658d38c18d34ec8_JaffaCakes118.exeeoukqpr.exe

pid	Process
536	d5a0f6baebe6f4bf5658d38c18d34ec8_JaffaCakes118.exe
2296	eoukqpr.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

d5a0f6baebe6f4bf5658d38c18d34ec8_JaffaCakes118.exe

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-4177215427-74451935-3209572229-1000\Software\Microsoft\Windows\CurrentVersion\Run\MSConfig = "\"C:\\Users\\Admin\\eoukqpr.exe\" /r"	d5a0f6baebe6f4bf5658d38c18d34ec8_JaffaCakes118.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

d5a0f6baebe6f4bf5658d38c18d34ec8_JaffaCakes118.exeeoukqpr.exeeoukqpr.exe

description	pid	Process	procid_target
PID 1924 set thread context of 536	1924	d5a0f6baebe6f4bf5658d38c18d34ec8_JaffaCakes118.exe	30
PID 2296 set thread context of 2240	2296	eoukqpr.exe	32
PID 2240 set thread context of 2260	2240	eoukqpr.exe	33

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

Processes:

eoukqpr.exeeoukqpr.execmd.exesvchost.exed5a0f6baebe6f4bf5658d38c18d34ec8_JaffaCakes118.exed5a0f6baebe6f4bf5658d38c18d34ec8_JaffaCakes118.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	eoukqpr.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	eoukqpr.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	d5a0f6baebe6f4bf5658d38c18d34ec8_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	d5a0f6baebe6f4bf5658d38c18d34ec8_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 32 IoCs

Processes:

d5a0f6baebe6f4bf5658d38c18d34ec8_JaffaCakes118.exed5a0f6baebe6f4bf5658d38c18d34ec8_JaffaCakes118.exeeoukqpr.exeeoukqpr.exe

description	pid	Process	procid_target
PID 1924 wrote to memory of 536	1924	d5a0f6baebe6f4bf5658d38c18d34ec8_JaffaCakes118.exe	30
PID 1924 wrote to memory of 536	1924	d5a0f6baebe6f4bf5658d38c18d34ec8_JaffaCakes118.exe	30
PID 1924 wrote to memory of 536	1924	d5a0f6baebe6f4bf5658d38c18d34ec8_JaffaCakes118.exe	30
PID 1924 wrote to memory of 536	1924	d5a0f6baebe6f4bf5658d38c18d34ec8_JaffaCakes118.exe	30
PID 1924 wrote to memory of 536	1924	d5a0f6baebe6f4bf5658d38c18d34ec8_JaffaCakes118.exe	30
PID 1924 wrote to memory of 536	1924	d5a0f6baebe6f4bf5658d38c18d34ec8_JaffaCakes118.exe	30
PID 1924 wrote to memory of 536	1924	d5a0f6baebe6f4bf5658d38c18d34ec8_JaffaCakes118.exe	30
PID 1924 wrote to memory of 536	1924	d5a0f6baebe6f4bf5658d38c18d34ec8_JaffaCakes118.exe	30
PID 1924 wrote to memory of 536	1924	d5a0f6baebe6f4bf5658d38c18d34ec8_JaffaCakes118.exe	30
PID 536 wrote to memory of 2296	536	d5a0f6baebe6f4bf5658d38c18d34ec8_JaffaCakes118.exe	31
PID 536 wrote to memory of 2296	536	d5a0f6baebe6f4bf5658d38c18d34ec8_JaffaCakes118.exe	31
PID 536 wrote to memory of 2296	536	d5a0f6baebe6f4bf5658d38c18d34ec8_JaffaCakes118.exe	31
PID 536 wrote to memory of 2296	536	d5a0f6baebe6f4bf5658d38c18d34ec8_JaffaCakes118.exe	31
PID 2296 wrote to memory of 2240	2296	eoukqpr.exe	32
PID 2296 wrote to memory of 2240	2296	eoukqpr.exe	32
PID 2296 wrote to memory of 2240	2296	eoukqpr.exe	32
PID 2296 wrote to memory of 2240	2296	eoukqpr.exe	32
PID 2296 wrote to memory of 2240	2296	eoukqpr.exe	32
PID 2296 wrote to memory of 2240	2296	eoukqpr.exe	32
PID 2296 wrote to memory of 2240	2296	eoukqpr.exe	32
PID 2296 wrote to memory of 2240	2296	eoukqpr.exe	32
PID 2296 wrote to memory of 2240	2296	eoukqpr.exe	32
PID 2240 wrote to memory of 2260	2240	eoukqpr.exe	33
PID 2240 wrote to memory of 2260	2240	eoukqpr.exe	33
PID 2240 wrote to memory of 2260	2240	eoukqpr.exe	33
PID 2240 wrote to memory of 2260	2240	eoukqpr.exe	33
PID 2240 wrote to memory of 2260	2240	eoukqpr.exe	33
PID 2240 wrote to memory of 2260	2240	eoukqpr.exe	33
PID 536 wrote to memory of 2112	536	d5a0f6baebe6f4bf5658d38c18d34ec8_JaffaCakes118.exe	34
PID 536 wrote to memory of 2112	536	d5a0f6baebe6f4bf5658d38c18d34ec8_JaffaCakes118.exe	34
PID 536 wrote to memory of 2112	536	d5a0f6baebe6f4bf5658d38c18d34ec8_JaffaCakes118.exe	34
PID 536 wrote to memory of 2112	536	d5a0f6baebe6f4bf5658d38c18d34ec8_JaffaCakes118.exe	34

C:\Users\Admin\AppData\Local\Temp\d5a0f6baebe6f4bf5658d38c18d34ec8_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\d5a0f6baebe6f4bf5658d38c18d34ec8_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1924
- C:\Users\Admin\AppData\Local\Temp\d5a0f6baebe6f4bf5658d38c18d34ec8_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\d5a0f6baebe6f4bf5658d38c18d34ec8_JaffaCakes118.exe"
  2⤵
  - Loads dropped DLL
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:536
- - C:\Users\Admin\eoukqpr.exe
    "C:\Users\Admin\eoukqpr.exe" /r
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2296
  - - C:\Users\Admin\eoukqpr.exe
      "C:\Users\Admin\eoukqpr.exe" /r
      4⤵
      Executes dropped EXE
      Suspicious use of SetThreadContext
      System Location Discovery: System Language Discovery
      Suspicious use of WriteProcessMemory
      PID:2240
    - - C:\Windows\SysWOW64\svchost.exe
        
        svchost.exe
        5⤵
        System Location Discovery: System Language Discovery
        
        PID:2260
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c ""C:\Users\Admin\AppData\Local\Temp\1737.bat" "
    3⤵
    - Deletes itself
    - System Location Discovery: System Language Discovery
    PID:2112

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\1737.bat

Filesize
117B

MD5
202ac4c7947f715582270980a27fde7c

SHA1
012e7f66cda2b93ff12e0e67a4d782c1017fe823

SHA256
06f02b6d9b97cf3eb0e2064f75767f1a82a02b9e2db9aff39c9b442794e81aeb

SHA512
9ec7f1f200e85c2749734be25e9ba95b5021ba997e683fe77558a48c54414c3cd62cf8bde4007e02d8f732eb884c860c825054165fd65a9a0e61f0b482632a73

Download Submit
\Users\Admin\eoukqpr.exe

Filesize
99KB

MD5
d5a0f6baebe6f4bf5658d38c18d34ec8

SHA1
6bcbb00faec744ff0a4d6d141071eef2baa70769

SHA256
17f96397035fded780c11562876cd455b635d98255f2052912afcd113c1a55d6

SHA512
e5342e1acb9967ec02cb935e413c91726c4005f217120112d5ccc56e11a82a3805673a4c13fff6e1ce808e84ea83e294d89590f02feb04f388f8cff2755aefcc

Download Submit
memory/536-4-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/536-10-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/536-0-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/536-2-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/536-12-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/536-13-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/536-8-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/536-6-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/536-59-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/2240-46-0x0000000000401000-0x000000000040C000-memory.dmp

Filesize
44KB

Download
memory/2260-42-0x0000000000080000-0x0000000000090000-memory.dmp

Filesize
64KB

Download
memory/2260-39-0x0000000000080000-0x0000000000090000-memory.dmp

Filesize
64KB

Download
memory/2260-37-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2260-49-0x0000000000080000-0x0000000000090000-memory.dmp

Filesize
64KB

Download
memory/2260-60-0x0000000000080000-0x0000000000090000-memory.dmp

Filesize
64KB

Download
memory/2260-62-0x0000000000080000-0x0000000000090000-memory.dmp

Filesize
64KB

Download