tofsee | 81c12f73122dd4e43b598c5f839f085044192e103281cda5cc8e3b64f4e741eb

Analysis

max time kernel
94s
max time network
129s
platform
windows10-2004_x64
resource
win10v2004-20250129-en
resource tags

arch:x64arch:x86image:win10v2004-20250129-enlocale:en-usos:windows10-2004-x64system
submitted
29-01-2025 05:46

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General

Target

JaffaCakes118_535f97a8b48d7069ba2f6c3441003bd9.exe
Size

189KB
MD5

535f97a8b48d7069ba2f6c3441003bd9
SHA1

d84624a83e75632a06f4535370b98c56f1d6fa97
SHA256

81c12f73122dd4e43b598c5f839f085044192e103281cda5cc8e3b64f4e741eb
SHA512

502de5f254cb0e0e3f4e546116074c446cf63d7e82f0d447be53207896c3a3731065d68fc9b024dea7876edcb72abb6cad29d828352af036f6869e9bbf1ebc22
SSDEEP

3072:8YI7L+itrYNhtaeMqfGkR+nWSmOhqdYCPd6GFbK+YGa3yU:eGtckR+nWSmOhqdYCPd6GFbK+YGa3yU

Score

10^/10

tofsee discovery persistence trojan

Malware Config

Extracted

Family

tofsee

91.121.4.118

rgtryhbgddtyh.biz

wertdghbyrukl.ch

Signatures

Tofsee
Backdoor/botnet which carries out malicious activities based on commands from a C2 server.
trojan tofsee
Tofsee family
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-1-5-21-2436272344-4274332273-444425594-1000\Control Panel\International\Geo\Nation	JaffaCakes118_535f97a8b48d7069ba2f6c3441003bd9.exe

Executes dropped EXE 2 IoCs

pid	Process
4640	juke.exe
4600	juke.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-1-5-21-2436272344-4274332273-444425594-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MSConfig = "\"C:\\Users\\Admin\\juke.exe\" /r"	JaffaCakes118_535f97a8b48d7069ba2f6c3441003bd9.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 1244 set thread context of 3880	1244	JaffaCakes118_535f97a8b48d7069ba2f6c3441003bd9.exe	81
PID 4640 set thread context of 4600	4640	juke.exe	84
PID 4600 set thread context of 5112	4600	juke.exe	85

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
1732	5112	WerFault.exe	85

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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_535f97a8b48d7069ba2f6c3441003bd9.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_535f97a8b48d7069ba2f6c3441003bd9.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	juke.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	juke.exe

Suspicious use of WriteProcessMemory 29 IoCs

description	pid	Process	procid_target
PID 1244 wrote to memory of 3880	1244	JaffaCakes118_535f97a8b48d7069ba2f6c3441003bd9.exe	81
PID 1244 wrote to memory of 3880	1244	JaffaCakes118_535f97a8b48d7069ba2f6c3441003bd9.exe	81
PID 1244 wrote to memory of 3880	1244	JaffaCakes118_535f97a8b48d7069ba2f6c3441003bd9.exe	81
PID 1244 wrote to memory of 3880	1244	JaffaCakes118_535f97a8b48d7069ba2f6c3441003bd9.exe	81
PID 1244 wrote to memory of 3880	1244	JaffaCakes118_535f97a8b48d7069ba2f6c3441003bd9.exe	81
PID 1244 wrote to memory of 3880	1244	JaffaCakes118_535f97a8b48d7069ba2f6c3441003bd9.exe	81
PID 1244 wrote to memory of 3880	1244	JaffaCakes118_535f97a8b48d7069ba2f6c3441003bd9.exe	81
PID 1244 wrote to memory of 3880	1244	JaffaCakes118_535f97a8b48d7069ba2f6c3441003bd9.exe	81
PID 1244 wrote to memory of 3880	1244	JaffaCakes118_535f97a8b48d7069ba2f6c3441003bd9.exe	81
PID 3880 wrote to memory of 4640	3880	JaffaCakes118_535f97a8b48d7069ba2f6c3441003bd9.exe	83
PID 3880 wrote to memory of 4640	3880	JaffaCakes118_535f97a8b48d7069ba2f6c3441003bd9.exe	83
PID 3880 wrote to memory of 4640	3880	JaffaCakes118_535f97a8b48d7069ba2f6c3441003bd9.exe	83
PID 4640 wrote to memory of 4600	4640	juke.exe	84
PID 4640 wrote to memory of 4600	4640	juke.exe	84
PID 4640 wrote to memory of 4600	4640	juke.exe	84
PID 4640 wrote to memory of 4600	4640	juke.exe	84
PID 4640 wrote to memory of 4600	4640	juke.exe	84
PID 4640 wrote to memory of 4600	4640	juke.exe	84
PID 4640 wrote to memory of 4600	4640	juke.exe	84
PID 4640 wrote to memory of 4600	4640	juke.exe	84
PID 4640 wrote to memory of 4600	4640	juke.exe	84
PID 4600 wrote to memory of 5112	4600	juke.exe	85
PID 4600 wrote to memory of 5112	4600	juke.exe	85
PID 4600 wrote to memory of 5112	4600	juke.exe	85
PID 4600 wrote to memory of 5112	4600	juke.exe	85
PID 4600 wrote to memory of 5112	4600	juke.exe	85
PID 3880 wrote to memory of 2136	3880	JaffaCakes118_535f97a8b48d7069ba2f6c3441003bd9.exe	90
PID 3880 wrote to memory of 2136	3880	JaffaCakes118_535f97a8b48d7069ba2f6c3441003bd9.exe	90
PID 3880 wrote to memory of 2136	3880	JaffaCakes118_535f97a8b48d7069ba2f6c3441003bd9.exe	90

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_535f97a8b48d7069ba2f6c3441003bd9.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_535f97a8b48d7069ba2f6c3441003bd9.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1244
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_535f97a8b48d7069ba2f6c3441003bd9.exe
  "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_535f97a8b48d7069ba2f6c3441003bd9.exe"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3880
- - C:\Users\Admin\juke.exe
    "C:\Users\Admin\juke.exe" /r
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4640
  - - C:\Users\Admin\juke.exe
      "C:\Users\Admin\juke.exe" /r
      4⤵
      Executes dropped EXE
      Suspicious use of SetThreadContext
      System Location Discovery: System Language Discovery
      Suspicious use of WriteProcessMemory
      PID:4600
    - - C:\Windows\SysWOW64\svchost.exe
        
        svchost.exe
        5⤵
        System Location Discovery: System Language Discovery
        
        PID:5112
      - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 5112 -s 200
        6⤵
        Program crash
        
        PID:1732
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\4648.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2136

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 5112 -ip 5112
1⤵
PID:4504

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\4648.bat

Filesize
117B

MD5
2537bf9239b7390f4978feef0a344925

SHA1
da31c4dfa58c7554fc18792d097e43682bfd74e2

SHA256
764c3f0867e17c78ace1f938696c47001a763e5bee416285c1c24dcc20528e73

SHA512
5aec05e8c1d466ef70dac7a4ee204e1873e1b2924eaadd924108facf3e1b66e5f7a324d2d9bcde39c9ec7560abe56751f8ded85a0af5aeaaac0c709288873add

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

Filesize
189KB

MD5
535f97a8b48d7069ba2f6c3441003bd9

SHA1
d84624a83e75632a06f4535370b98c56f1d6fa97

SHA256
81c12f73122dd4e43b598c5f839f085044192e103281cda5cc8e3b64f4e741eb

SHA512
502de5f254cb0e0e3f4e546116074c446cf63d7e82f0d447be53207896c3a3731065d68fc9b024dea7876edcb72abb6cad29d828352af036f6869e9bbf1ebc22

Download Submit
memory/3880-25-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/3880-2-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/3880-4-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/3880-0-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/4600-13-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/5112-21-0x00000000008F0000-0x0000000000916000-memory.dmp

Filesize
152KB

Download
memory/5112-14-0x00000000008F0000-0x0000000000916000-memory.dmp

Filesize
152KB

Download
memory/5112-30-0x00000000009D0000-0x00000000009D1000-memory.dmp

Filesize
4KB

Download
memory/5112-29-0x00000000008F0000-0x0000000000916000-memory.dmp

Filesize
152KB

Download
memory/5112-31-0x00000000008F0000-0x0000000000916000-memory.dmp

Filesize
152KB

Download
memory/5112-32-0x00000000008F0000-0x0000000000916000-memory.dmp

Filesize
152KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads