tofsee | 17f96397035fded780c11562876cd455b635d98255f2052912afcd113c1a55d6

Analysis

max time kernel
92s
max time network
94s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-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

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

d5a0f6baebe6f4bf5658d38c18d34ec8_JaffaCakes118.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-4182098368-2521458979-3782681353-1000\Control Panel\International\Geo\Nation	d5a0f6baebe6f4bf5658d38c18d34ec8_JaffaCakes118.exe

Executes dropped EXE 2 IoCs

Processes:

sckr.exesckr.exe

pid	Process
3152	sckr.exe
4756	sckr.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-1-5-21-4182098368-2521458979-3782681353-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MSConfig = "\"C:\\Users\\Admin\\sckr.exe\" /r"	d5a0f6baebe6f4bf5658d38c18d34ec8_JaffaCakes118.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

d5a0f6baebe6f4bf5658d38c18d34ec8_JaffaCakes118.exesckr.exesckr.exe

description	pid	Process	procid_target
PID 4904 set thread context of 624	4904	d5a0f6baebe6f4bf5658d38c18d34ec8_JaffaCakes118.exe	83
PID 3152 set thread context of 4756	3152	sckr.exe	85
PID 4756 set thread context of 1148	4756	sckr.exe	86

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

System Information Discovery
T1082

Program crash 1 IoCs

Processes:

WerFault.exe

pid	pid_target	Process	procid_target
4052	1148	WerFault.exe	86

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:

svchost.exed5a0f6baebe6f4bf5658d38c18d34ec8_JaffaCakes118.exed5a0f6baebe6f4bf5658d38c18d34ec8_JaffaCakes118.exesckr.exesckr.execmd.exe

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

Suspicious use of WriteProcessMemory 27 IoCs

Processes:

d5a0f6baebe6f4bf5658d38c18d34ec8_JaffaCakes118.exed5a0f6baebe6f4bf5658d38c18d34ec8_JaffaCakes118.exesckr.exesckr.exe

description	pid	Process	procid_target
PID 4904 wrote to memory of 624	4904	d5a0f6baebe6f4bf5658d38c18d34ec8_JaffaCakes118.exe	83
PID 4904 wrote to memory of 624	4904	d5a0f6baebe6f4bf5658d38c18d34ec8_JaffaCakes118.exe	83
PID 4904 wrote to memory of 624	4904	d5a0f6baebe6f4bf5658d38c18d34ec8_JaffaCakes118.exe	83
PID 4904 wrote to memory of 624	4904	d5a0f6baebe6f4bf5658d38c18d34ec8_JaffaCakes118.exe	83
PID 4904 wrote to memory of 624	4904	d5a0f6baebe6f4bf5658d38c18d34ec8_JaffaCakes118.exe	83
PID 4904 wrote to memory of 624	4904	d5a0f6baebe6f4bf5658d38c18d34ec8_JaffaCakes118.exe	83
PID 4904 wrote to memory of 624	4904	d5a0f6baebe6f4bf5658d38c18d34ec8_JaffaCakes118.exe	83
PID 4904 wrote to memory of 624	4904	d5a0f6baebe6f4bf5658d38c18d34ec8_JaffaCakes118.exe	83
PID 624 wrote to memory of 3152	624	d5a0f6baebe6f4bf5658d38c18d34ec8_JaffaCakes118.exe	84
PID 624 wrote to memory of 3152	624	d5a0f6baebe6f4bf5658d38c18d34ec8_JaffaCakes118.exe	84
PID 624 wrote to memory of 3152	624	d5a0f6baebe6f4bf5658d38c18d34ec8_JaffaCakes118.exe	84
PID 3152 wrote to memory of 4756	3152	sckr.exe	85
PID 3152 wrote to memory of 4756	3152	sckr.exe	85
PID 3152 wrote to memory of 4756	3152	sckr.exe	85
PID 3152 wrote to memory of 4756	3152	sckr.exe	85
PID 3152 wrote to memory of 4756	3152	sckr.exe	85
PID 3152 wrote to memory of 4756	3152	sckr.exe	85
PID 3152 wrote to memory of 4756	3152	sckr.exe	85
PID 3152 wrote to memory of 4756	3152	sckr.exe	85
PID 4756 wrote to memory of 1148	4756	sckr.exe	86
PID 4756 wrote to memory of 1148	4756	sckr.exe	86
PID 4756 wrote to memory of 1148	4756	sckr.exe	86
PID 4756 wrote to memory of 1148	4756	sckr.exe	86
PID 4756 wrote to memory of 1148	4756	sckr.exe	86
PID 624 wrote to memory of 1396	624	d5a0f6baebe6f4bf5658d38c18d34ec8_JaffaCakes118.exe	91
PID 624 wrote to memory of 1396	624	d5a0f6baebe6f4bf5658d38c18d34ec8_JaffaCakes118.exe	91
PID 624 wrote to memory of 1396	624	d5a0f6baebe6f4bf5658d38c18d34ec8_JaffaCakes118.exe	91

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:4904
- C:\Users\Admin\AppData\Local\Temp\d5a0f6baebe6f4bf5658d38c18d34ec8_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\d5a0f6baebe6f4bf5658d38c18d34ec8_JaffaCakes118.exe"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:624
- - C:\Users\Admin\sckr.exe
    "C:\Users\Admin\sckr.exe" /r
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:3152
  - - C:\Users\Admin\sckr.exe
      "C:\Users\Admin\sckr.exe" /r
      4⤵
      Executes dropped EXE
      Suspicious use of SetThreadContext
      System Location Discovery: System Language Discovery
      Suspicious use of WriteProcessMemory
      PID:4756
    - - C:\Windows\SysWOW64\svchost.exe
        
        svchost.exe
        5⤵
        System Location Discovery: System Language Discovery
        
        PID:1148
      - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 1148 -s 320
        6⤵
        Program crash
        
        PID:4052
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\7117.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    PID:1396

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1148 -ip 1148
1⤵
PID:3508

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

Query Registry

T1012

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\7117.bat

Filesize
117B

MD5
202ac4c7947f715582270980a27fde7c

SHA1
012e7f66cda2b93ff12e0e67a4d782c1017fe823

SHA256
06f02b6d9b97cf3eb0e2064f75767f1a82a02b9e2db9aff39c9b442794e81aeb

SHA512
9ec7f1f200e85c2749734be25e9ba95b5021ba997e683fe77558a48c54414c3cd62cf8bde4007e02d8f732eb884c860c825054165fd65a9a0e61f0b482632a73

Download Submit
C:\Users\Admin\sckr.exe

Filesize
99KB

MD5
d5a0f6baebe6f4bf5658d38c18d34ec8

SHA1
6bcbb00faec744ff0a4d6d141071eef2baa70769

SHA256
17f96397035fded780c11562876cd455b635d98255f2052912afcd113c1a55d6

SHA512
e5342e1acb9967ec02cb935e413c91726c4005f217120112d5ccc56e11a82a3805673a4c13fff6e1ce808e84ea83e294d89590f02feb04f388f8cff2755aefcc

Download Submit
memory/624-0-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/624-2-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/624-5-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/624-25-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/1148-21-0x0000000000780000-0x0000000000790000-memory.dmp

Filesize
64KB

Download
memory/1148-14-0x0000000000780000-0x0000000000790000-memory.dmp

Filesize
64KB

Download
memory/1148-29-0x0000000000780000-0x0000000000790000-memory.dmp

Filesize
64KB

Download
memory/1148-30-0x00000000027C0000-0x00000000027C1000-memory.dmp

Filesize
4KB

Download
memory/1148-31-0x0000000000780000-0x0000000000790000-memory.dmp

Filesize
64KB

Download
memory/1148-32-0x0000000000780000-0x0000000000790000-memory.dmp

Filesize
64KB

Download
memory/4756-13-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download