tofsee | b88007fbe1d0fb4751db6954ae6990a0c4c3cb52c1f896ce0ad7b8776cdc3c53

Analysis

max time kernel
131s
max time network
134s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
08-09-2024 07:45

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General

Target

d3df5dd279badd783ccc9755d131bf8b_JaffaCakes118.exe
Size

106KB
MD5

d3df5dd279badd783ccc9755d131bf8b
SHA1

adb71b13c9c6780a1aad45ddf8f427564e2ed329
SHA256

b88007fbe1d0fb4751db6954ae6990a0c4c3cb52c1f896ce0ad7b8776cdc3c53
SHA512

85823c21ed224f3c1f7ec795cf70b7829a63864cbd8205f8703036f20ae6929b8b12e8017ffd01b17d8d1aaecd75e9082433e826d5bcce392c55ce052b6e7f34
SSDEEP

1536:KwGVxjjSw7LhpTkVC2JH5ppXSdv1oyotxGcC8HVXSC/jPQfLy2nlJX2jfVTQGTg:XeVpmC2JH5p01KjbHhjj2nTX27VsKg

Score

10^/10

tofsee discovery persistence trojan

Malware Config

Extracted

Family

tofsee

94.75.255.140

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-1-5-21-2170637797-568393320-3232933035-1000\Control Panel\International\Geo\Nation	d3df5dd279badd783ccc9755d131bf8b_JaffaCakes118.exe

Executes dropped EXE 2 IoCs

pid	Process
2364	cgxf.exe
396	cgxf.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-1-5-21-2170637797-568393320-3232933035-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MSConfig = "\"C:\\Users\\Admin\\cgxf.exe\" /r"	d3df5dd279badd783ccc9755d131bf8b_JaffaCakes118.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 4160 set thread context of 5048	4160	d3df5dd279badd783ccc9755d131bf8b_JaffaCakes118.exe	90
PID 2364 set thread context of 396	2364	cgxf.exe	92
PID 396 set thread context of 3024	396	cgxf.exe	93

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
4352	3024	WerFault.exe	93

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	d3df5dd279badd783ccc9755d131bf8b_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	d3df5dd279badd783ccc9755d131bf8b_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cgxf.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cgxf.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 27 IoCs

description	pid	Process	procid_target
PID 4160 wrote to memory of 5048	4160	d3df5dd279badd783ccc9755d131bf8b_JaffaCakes118.exe	90
PID 4160 wrote to memory of 5048	4160	d3df5dd279badd783ccc9755d131bf8b_JaffaCakes118.exe	90
PID 4160 wrote to memory of 5048	4160	d3df5dd279badd783ccc9755d131bf8b_JaffaCakes118.exe	90
PID 4160 wrote to memory of 5048	4160	d3df5dd279badd783ccc9755d131bf8b_JaffaCakes118.exe	90
PID 4160 wrote to memory of 5048	4160	d3df5dd279badd783ccc9755d131bf8b_JaffaCakes118.exe	90
PID 4160 wrote to memory of 5048	4160	d3df5dd279badd783ccc9755d131bf8b_JaffaCakes118.exe	90
PID 4160 wrote to memory of 5048	4160	d3df5dd279badd783ccc9755d131bf8b_JaffaCakes118.exe	90
PID 4160 wrote to memory of 5048	4160	d3df5dd279badd783ccc9755d131bf8b_JaffaCakes118.exe	90
PID 5048 wrote to memory of 2364	5048	d3df5dd279badd783ccc9755d131bf8b_JaffaCakes118.exe	91
PID 5048 wrote to memory of 2364	5048	d3df5dd279badd783ccc9755d131bf8b_JaffaCakes118.exe	91
PID 5048 wrote to memory of 2364	5048	d3df5dd279badd783ccc9755d131bf8b_JaffaCakes118.exe	91
PID 2364 wrote to memory of 396	2364	cgxf.exe	92
PID 2364 wrote to memory of 396	2364	cgxf.exe	92
PID 2364 wrote to memory of 396	2364	cgxf.exe	92
PID 2364 wrote to memory of 396	2364	cgxf.exe	92
PID 2364 wrote to memory of 396	2364	cgxf.exe	92
PID 2364 wrote to memory of 396	2364	cgxf.exe	92
PID 2364 wrote to memory of 396	2364	cgxf.exe	92
PID 2364 wrote to memory of 396	2364	cgxf.exe	92
PID 396 wrote to memory of 3024	396	cgxf.exe	93
PID 396 wrote to memory of 3024	396	cgxf.exe	93
PID 396 wrote to memory of 3024	396	cgxf.exe	93
PID 396 wrote to memory of 3024	396	cgxf.exe	93
PID 396 wrote to memory of 3024	396	cgxf.exe	93
PID 5048 wrote to memory of 2072	5048	d3df5dd279badd783ccc9755d131bf8b_JaffaCakes118.exe	96
PID 5048 wrote to memory of 2072	5048	d3df5dd279badd783ccc9755d131bf8b_JaffaCakes118.exe	96
PID 5048 wrote to memory of 2072	5048	d3df5dd279badd783ccc9755d131bf8b_JaffaCakes118.exe	96

C:\Users\Admin\AppData\Local\Temp\d3df5dd279badd783ccc9755d131bf8b_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\d3df5dd279badd783ccc9755d131bf8b_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4160
- C:\Users\Admin\AppData\Local\Temp\d3df5dd279badd783ccc9755d131bf8b_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\d3df5dd279badd783ccc9755d131bf8b_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\cgxf.exe
    "C:\Users\Admin\cgxf.exe" /r
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2364
  - - C:\Users\Admin\cgxf.exe
      "C:\Users\Admin\cgxf.exe" /r
      4⤵
      Executes dropped EXE
      Suspicious use of SetThreadContext
      System Location Discovery: System Language Discovery
      Suspicious use of WriteProcessMemory
      PID:396
    - - C:\Windows\SysWOW64\svchost.exe
        
        svchost.exe
        5⤵
        System Location Discovery: System Language Discovery
        
        PID:3024
      - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 3024 -s 320
        6⤵
        Program crash
        
        PID:4352
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\5084.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2072

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 3024 -ip 3024
1⤵
PID:636

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=1284,i,7447299413640964517,4240724842020506306,262144 --variations-seed-version --mojo-platform-channel-handle=2540 /prefetch:8
1⤵
PID:4860

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\5084.bat

Filesize
117B

MD5
246977d8632ca5fa4dd5c9373eeebdd5

SHA1
b72ab557c16b71b6c57d47c4df9ee9c06eef31b0

SHA256
87bc41cbaa79dd450a7c8487604e75ec312e7232ce2e4cff693b728f25f56a6f

SHA512
21d610fb2bf1550db2dc778d25ab7315b9f930f58e3a2bce6f258d319295c9e6f265882ebcbeca871c6e57c8d5552f188f1a34673b21c41a1a40fb48dfc261e1

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

Filesize
106KB

MD5
d3df5dd279badd783ccc9755d131bf8b

SHA1
adb71b13c9c6780a1aad45ddf8f427564e2ed329

SHA256
b88007fbe1d0fb4751db6954ae6990a0c4c3cb52c1f896ce0ad7b8776cdc3c53

SHA512
85823c21ed224f3c1f7ec795cf70b7829a63864cbd8205f8703036f20ae6929b8b12e8017ffd01b17d8d1aaecd75e9082433e826d5bcce392c55ce052b6e7f34

Download Submit
memory/396-13-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/3024-14-0x0000000000C20000-0x0000000000C30000-memory.dmp

Filesize
64KB

Download
memory/3024-21-0x0000000000C20000-0x0000000000C30000-memory.dmp

Filesize
64KB

Download
memory/3024-29-0x0000000000C20000-0x0000000000C30000-memory.dmp

Filesize
64KB

Download
memory/3024-30-0x0000000000DD0000-0x0000000000DD1000-memory.dmp

Filesize
4KB

Download
memory/3024-31-0x0000000000C20000-0x0000000000C30000-memory.dmp

Filesize
64KB

Download
memory/3024-32-0x0000000000C20000-0x0000000000C30000-memory.dmp

Filesize
64KB

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

Filesize
64KB

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

Filesize
64KB

Download
memory/5048-25-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/5048-2-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads