tofsee | 27eee4b9d99a346cbc800509c8b78ec0d38a20dc0c1d4cd7f112a1af1dc425bb

Analysis

max time kernel
95s
max time network
130s
platform
windows10-2004_x64
resource
win10v2004-20250129-en
resource tags

arch:x64arch:x86image:win10v2004-20250129-enlocale:en-usos:windows10-2004-x64system
submitted
30/01/2025, 10:40

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General

Target

JaffaCakes118_61db407c522e2507cff184da43270768.exe
Size

180KB
MD5

61db407c522e2507cff184da43270768
SHA1

5803ce233b53358f3d5baef60b3c8d67d16c7d82
SHA256

27eee4b9d99a346cbc800509c8b78ec0d38a20dc0c1d4cd7f112a1af1dc425bb
SHA512

a366d98c33a6bd6693880e282d3966db6f7008a5093b67893f7a206d8ca20d612a3059968fab63f30de7df7d87f4ceb3c59e6ce7cc83af382dff4d48eebc5f54
SSDEEP

3072:N6mkrF2lH16EI1BU/z92qcY0R8U2F8O4QRf2JLuQgTbNaQUQ:QdaaBI7cY02U

Score

10^/10

tofsee discovery persistence trojan

Malware Config

Extracted

Family

tofsee

89.149.236.147

188.165.132.183

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-1-5-21-1412605595-2147700071-3468511006-1000\Control Panel\International\Geo\Nation	JaffaCakes118_61db407c522e2507cff184da43270768.exe

Executes dropped EXE 2 IoCs

pid	Process
1740	kbb.exe
2476	kbb.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-1-5-21-1412605595-2147700071-3468511006-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MSConfig = "\"C:\\Users\\Admin\\kbb.exe\" /r"	JaffaCakes118_61db407c522e2507cff184da43270768.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 2204 set thread context of 1336	2204	JaffaCakes118_61db407c522e2507cff184da43270768.exe	84
PID 1740 set thread context of 2476	1740	kbb.exe	89
PID 2476 set thread context of 2888	2476	kbb.exe	90

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
3292	2888	WerFault.exe	90

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	JaffaCakes118_61db407c522e2507cff184da43270768.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_61db407c522e2507cff184da43270768.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	kbb.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	kbb.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 29 IoCs

description	pid	Process	procid_target
PID 2204 wrote to memory of 1336	2204	JaffaCakes118_61db407c522e2507cff184da43270768.exe	84
PID 2204 wrote to memory of 1336	2204	JaffaCakes118_61db407c522e2507cff184da43270768.exe	84
PID 2204 wrote to memory of 1336	2204	JaffaCakes118_61db407c522e2507cff184da43270768.exe	84
PID 2204 wrote to memory of 1336	2204	JaffaCakes118_61db407c522e2507cff184da43270768.exe	84
PID 2204 wrote to memory of 1336	2204	JaffaCakes118_61db407c522e2507cff184da43270768.exe	84
PID 2204 wrote to memory of 1336	2204	JaffaCakes118_61db407c522e2507cff184da43270768.exe	84
PID 2204 wrote to memory of 1336	2204	JaffaCakes118_61db407c522e2507cff184da43270768.exe	84
PID 2204 wrote to memory of 1336	2204	JaffaCakes118_61db407c522e2507cff184da43270768.exe	84
PID 2204 wrote to memory of 1336	2204	JaffaCakes118_61db407c522e2507cff184da43270768.exe	84
PID 1336 wrote to memory of 1740	1336	JaffaCakes118_61db407c522e2507cff184da43270768.exe	85
PID 1336 wrote to memory of 1740	1336	JaffaCakes118_61db407c522e2507cff184da43270768.exe	85
PID 1336 wrote to memory of 1740	1336	JaffaCakes118_61db407c522e2507cff184da43270768.exe	85
PID 1336 wrote to memory of 3888	1336	JaffaCakes118_61db407c522e2507cff184da43270768.exe	86
PID 1336 wrote to memory of 3888	1336	JaffaCakes118_61db407c522e2507cff184da43270768.exe	86
PID 1336 wrote to memory of 3888	1336	JaffaCakes118_61db407c522e2507cff184da43270768.exe	86
PID 1740 wrote to memory of 2476	1740	kbb.exe	89
PID 1740 wrote to memory of 2476	1740	kbb.exe	89
PID 1740 wrote to memory of 2476	1740	kbb.exe	89
PID 1740 wrote to memory of 2476	1740	kbb.exe	89
PID 1740 wrote to memory of 2476	1740	kbb.exe	89
PID 1740 wrote to memory of 2476	1740	kbb.exe	89
PID 1740 wrote to memory of 2476	1740	kbb.exe	89
PID 1740 wrote to memory of 2476	1740	kbb.exe	89
PID 1740 wrote to memory of 2476	1740	kbb.exe	89
PID 2476 wrote to memory of 2888	2476	kbb.exe	90
PID 2476 wrote to memory of 2888	2476	kbb.exe	90
PID 2476 wrote to memory of 2888	2476	kbb.exe	90
PID 2476 wrote to memory of 2888	2476	kbb.exe	90
PID 2476 wrote to memory of 2888	2476	kbb.exe	90

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_61db407c522e2507cff184da43270768.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_61db407c522e2507cff184da43270768.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2204
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_61db407c522e2507cff184da43270768.exe
  "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_61db407c522e2507cff184da43270768.exe"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1336
- - C:\Users\Admin\kbb.exe
    "C:\Users\Admin\kbb.exe" /r
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:1740
  - - C:\Users\Admin\kbb.exe
      "C:\Users\Admin\kbb.exe" /r
      4⤵
      Executes dropped EXE
      Suspicious use of SetThreadContext
      System Location Discovery: System Language Discovery
      Suspicious use of WriteProcessMemory
      PID:2476
    - - C:\Windows\SysWOW64\svchost.exe
        
        svchost.exe
        5⤵
        System Location Discovery: System Language Discovery
        
        PID:2888
      - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 2888 -s 324
        6⤵
        Program crash
        
        PID:3292
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\0562.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    PID:3888

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2888 -ip 2888
1⤵
PID:4028

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\0562.bat

Filesize
117B

MD5
301c443a97b93425ee1301de5f66adb3

SHA1
0907f26cf817bf2bb576651338fb386adf657076

SHA256
553fe3c22c931b640ab0ad1a11f402dc81bfacc2adf4866a176b27765e0172e5

SHA512
34bebe01e07c102d474e251c83be18de5e314a4e9ff89ea60389d6d2fb5828ecf1b300ab9f3b23ffa57d21b7e028504d4bc65f17daaea0b20b023f656a100ff1

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

Filesize
180KB

MD5
61db407c522e2507cff184da43270768

SHA1
5803ce233b53358f3d5baef60b3c8d67d16c7d82

SHA256
27eee4b9d99a346cbc800509c8b78ec0d38a20dc0c1d4cd7f112a1af1dc425bb

SHA512
a366d98c33a6bd6693880e282d3966db6f7008a5093b67893f7a206d8ca20d612a3059968fab63f30de7df7d87f4ceb3c59e6ce7cc83af382dff4d48eebc5f54

Download Submit
memory/1336-0-0x0000000000400000-0x0000000000423000-memory.dmp

Filesize
140KB

Download
memory/1336-2-0x0000000000400000-0x0000000000423000-memory.dmp

Filesize
140KB

Download
memory/1336-10-0x0000000000400000-0x0000000000423000-memory.dmp

Filesize
140KB

Download
memory/2476-17-0x0000000000400000-0x0000000000423000-memory.dmp

Filesize
140KB

Download
memory/2476-16-0x0000000000400000-0x0000000000423000-memory.dmp

Filesize
140KB

Download
memory/2888-18-0x00000000004C0000-0x00000000004E3000-memory.dmp

Filesize
140KB

Download
memory/2888-25-0x00000000004C0000-0x00000000004E3000-memory.dmp

Filesize
140KB

Download
memory/2888-28-0x00000000004C0000-0x00000000004E3000-memory.dmp

Filesize
140KB

Download
memory/2888-29-0x0000000000980000-0x0000000000981000-memory.dmp

Filesize
4KB

Download
memory/2888-30-0x00000000004C0000-0x00000000004E3000-memory.dmp

Filesize
140KB

Download
memory/2888-31-0x00000000004C0000-0x00000000004E3000-memory.dmp

Filesize
140KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads