tofsee | eb51714bc9a3200707efbaf6a996dd51490c5674b129129eaba8cdddff96e8ba

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
08-10-2024 18:34

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General

Target

23857773eef5ec542ab9f8c9ee25d6c2_JaffaCakes118.exe
Size

98KB
MD5

23857773eef5ec542ab9f8c9ee25d6c2
SHA1

629ad3d505e0470e4b9477f9c862a3f475579970
SHA256

eb51714bc9a3200707efbaf6a996dd51490c5674b129129eaba8cdddff96e8ba
SHA512

6c67da82cf375e978f42a11eb678bb4a61593470e4fdd8447629682b3feb86ba615a3d7684fbe37f0c15b5960a669c7db9e6969112a99161140d08b7a3186938
SSDEEP

1536:PA86xJ39qqj7pf//ndPtVwNtgszLgetXlII1LavPWoY27rCjjQSUd0:PqFFLVwgmgetXmI1WeoH1SUd0

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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	23857773eef5ec542ab9f8c9ee25d6c2_JaffaCakes118.exe

Executes dropped EXE 2 IoCs

pid	Process
3080	bdelf.exe
2292	bdelf.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-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MSConfig = "\"C:\\Users\\Admin\\bdelf.exe\" /r"	23857773eef5ec542ab9f8c9ee25d6c2_JaffaCakes118.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 3756 set thread context of 5048	3756	23857773eef5ec542ab9f8c9ee25d6c2_JaffaCakes118.exe	85
PID 3080 set thread context of 2292	3080	bdelf.exe	87
PID 2292 set thread context of 4836	2292	bdelf.exe	88

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

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1412	4836	WerFault.exe	88

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	bdelf.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	23857773eef5ec542ab9f8c9ee25d6c2_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	23857773eef5ec542ab9f8c9ee25d6c2_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	bdelf.exe

Suspicious use of WriteProcessMemory 27 IoCs

description	pid	Process	procid_target
PID 3756 wrote to memory of 5048	3756	23857773eef5ec542ab9f8c9ee25d6c2_JaffaCakes118.exe	85
PID 3756 wrote to memory of 5048	3756	23857773eef5ec542ab9f8c9ee25d6c2_JaffaCakes118.exe	85
PID 3756 wrote to memory of 5048	3756	23857773eef5ec542ab9f8c9ee25d6c2_JaffaCakes118.exe	85
PID 3756 wrote to memory of 5048	3756	23857773eef5ec542ab9f8c9ee25d6c2_JaffaCakes118.exe	85
PID 3756 wrote to memory of 5048	3756	23857773eef5ec542ab9f8c9ee25d6c2_JaffaCakes118.exe	85
PID 3756 wrote to memory of 5048	3756	23857773eef5ec542ab9f8c9ee25d6c2_JaffaCakes118.exe	85
PID 3756 wrote to memory of 5048	3756	23857773eef5ec542ab9f8c9ee25d6c2_JaffaCakes118.exe	85
PID 3756 wrote to memory of 5048	3756	23857773eef5ec542ab9f8c9ee25d6c2_JaffaCakes118.exe	85
PID 5048 wrote to memory of 3080	5048	23857773eef5ec542ab9f8c9ee25d6c2_JaffaCakes118.exe	86
PID 5048 wrote to memory of 3080	5048	23857773eef5ec542ab9f8c9ee25d6c2_JaffaCakes118.exe	86
PID 5048 wrote to memory of 3080	5048	23857773eef5ec542ab9f8c9ee25d6c2_JaffaCakes118.exe	86
PID 3080 wrote to memory of 2292	3080	bdelf.exe	87
PID 3080 wrote to memory of 2292	3080	bdelf.exe	87
PID 3080 wrote to memory of 2292	3080	bdelf.exe	87
PID 3080 wrote to memory of 2292	3080	bdelf.exe	87
PID 3080 wrote to memory of 2292	3080	bdelf.exe	87
PID 3080 wrote to memory of 2292	3080	bdelf.exe	87
PID 3080 wrote to memory of 2292	3080	bdelf.exe	87
PID 3080 wrote to memory of 2292	3080	bdelf.exe	87
PID 2292 wrote to memory of 4836	2292	bdelf.exe	88
PID 2292 wrote to memory of 4836	2292	bdelf.exe	88
PID 2292 wrote to memory of 4836	2292	bdelf.exe	88
PID 2292 wrote to memory of 4836	2292	bdelf.exe	88
PID 2292 wrote to memory of 4836	2292	bdelf.exe	88
PID 5048 wrote to memory of 1156	5048	23857773eef5ec542ab9f8c9ee25d6c2_JaffaCakes118.exe	92
PID 5048 wrote to memory of 1156	5048	23857773eef5ec542ab9f8c9ee25d6c2_JaffaCakes118.exe	92
PID 5048 wrote to memory of 1156	5048	23857773eef5ec542ab9f8c9ee25d6c2_JaffaCakes118.exe	92

C:\Users\Admin\AppData\Local\Temp\23857773eef5ec542ab9f8c9ee25d6c2_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\23857773eef5ec542ab9f8c9ee25d6c2_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3756
- C:\Users\Admin\AppData\Local\Temp\23857773eef5ec542ab9f8c9ee25d6c2_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\23857773eef5ec542ab9f8c9ee25d6c2_JaffaCakes118.exe"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:5048
- - C:\Users\Admin\bdelf.exe
    "C:\Users\Admin\bdelf.exe" /r
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:3080
  - - C:\Users\Admin\bdelf.exe
      "C:\Users\Admin\bdelf.exe" /r
      4⤵
      Executes dropped EXE
      Suspicious use of SetThreadContext
      System Location Discovery: System Language Discovery
      Suspicious use of WriteProcessMemory
      PID:2292
    - - C:\Windows\SysWOW64\svchost.exe
        
        svchost.exe
        5⤵
        System Location Discovery: System Language Discovery
        
        PID:4836
      - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 4836 -s 320
        6⤵
        Program crash
        
        PID:1412
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\7768.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    PID:1156

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 4836 -ip 4836
1⤵
PID:3688

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\7768.bat

Filesize
117B

MD5
1bdc8e6e9404a92f451af82c160eebcd

SHA1
4724d788a9df4d991f0696e60948b2fa4f40fc06

SHA256
41d440f0d5b076e6aac40df2094f1b311225f3bdef2afa87358d6bdd1b2636f3

SHA512
c7167222f606c3bb14de8896a17692e818d1b36540b5501c35379a5632df6bc411fc40142a6829e308c0bcf63e25f9030ca11b3457cbeb56bffaab2461d16780

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

Filesize
98KB

MD5
23857773eef5ec542ab9f8c9ee25d6c2

SHA1
629ad3d505e0470e4b9477f9c862a3f475579970

SHA256
eb51714bc9a3200707efbaf6a996dd51490c5674b129129eaba8cdddff96e8ba

SHA512
6c67da82cf375e978f42a11eb678bb4a61593470e4fdd8447629682b3feb86ba615a3d7684fbe37f0c15b5960a669c7db9e6969112a99161140d08b7a3186938

Download Submit
memory/2292-15-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/3080-14-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/3756-3-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/3756-0-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/4836-30-0x0000000000C70000-0x0000000000C80000-memory.dmp

Filesize
64KB

Download
memory/4836-33-0x0000000000C70000-0x0000000000C80000-memory.dmp

Filesize
64KB

Download
memory/4836-16-0x0000000000C70000-0x0000000000C80000-memory.dmp

Filesize
64KB

Download
memory/4836-23-0x0000000000C70000-0x0000000000C80000-memory.dmp

Filesize
64KB

Download
memory/4836-32-0x0000000000C70000-0x0000000000C80000-memory.dmp

Filesize
64KB

Download
memory/4836-31-0x0000000002AA0000-0x0000000002AA1000-memory.dmp

Filesize
4KB

Download
memory/5048-4-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/5048-27-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/5048-1-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads