tofsee | e500f5427f16ffe2ea528ff2cf9d0eae84575d3322947aa52b6178e1e60e3939

Analysis

max time kernel
151s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
04/04/2024, 18:43

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General

Target
bfe341b4ad6b30fbc711741e5c2fc8a6_JaffaCakes118.exe
Size 14.8MB
Sample240404-xc7pwsfg44
SHA256 e500f5427f16ffe2ea528ff2cf9d0eae84575d3322947aa52b6178e1e60e3939
MD5 bfe341b4ad6b30fbc711741e5c2fc8a6
SHA1 713a0913520c1a899ebeeea2755ee46ea5d1862c
SHA512 3abb8f673c8bd09019185a371706ddc1826572704e87a7972016433a591b43c1cb8ce589fec4b495fa4ebb735423089716a192966a6988bd0947ea562c8b2321
SSDEEP 12288:Zb22XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXH:x2
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

tofsee evasion persistence trojan

Malware Config

Extracted

Family

tofsee

defeatwax.ru
refabyd.info

Signatures

Tofsee
Backdoor/botnet which carries out malicious activities based on commands from a C2 server.
trojan tofsee
Creates new service(s) 1 TTPs
persistence

Windows Service
T1543.003

Modifies Windows Firewall 2 TTPs 1 IoCs

evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
368	netsh.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\qbkptbt\ImagePath = "C:\\Windows\\SysWOW64\\qbkptbt\\tivrdcvh.exe"	svchost.exe

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-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	bfe341b4ad6b30fbc711741e5c2fc8a6_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
1656	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4792	tivrdcvh.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4792 set thread context of 1656	4792	tivrdcvh.exe	117

Launches sc.exe 3 IoCs

Sc.exe is a Windows utlilty to control services on the system.

pid	Process
3404	sc.exe
2164	sc.exe
3184	sc.exe

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

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3360 wrote to memory of 3552	3360	bfe341b4ad6b30fbc711741e5c2fc8a6_JaffaCakes118.exe	101
PID 3360 wrote to memory of 3552	3360	bfe341b4ad6b30fbc711741e5c2fc8a6_JaffaCakes118.exe	101
PID 3360 wrote to memory of 3552	3360	bfe341b4ad6b30fbc711741e5c2fc8a6_JaffaCakes118.exe	101
PID 3360 wrote to memory of 908	3360	bfe341b4ad6b30fbc711741e5c2fc8a6_JaffaCakes118.exe	103
PID 3360 wrote to memory of 908	3360	bfe341b4ad6b30fbc711741e5c2fc8a6_JaffaCakes118.exe	103
PID 3360 wrote to memory of 908	3360	bfe341b4ad6b30fbc711741e5c2fc8a6_JaffaCakes118.exe	103
PID 3360 wrote to memory of 3404	3360	bfe341b4ad6b30fbc711741e5c2fc8a6_JaffaCakes118.exe	105
PID 3360 wrote to memory of 3404	3360	bfe341b4ad6b30fbc711741e5c2fc8a6_JaffaCakes118.exe	105
PID 3360 wrote to memory of 3404	3360	bfe341b4ad6b30fbc711741e5c2fc8a6_JaffaCakes118.exe	105
PID 3360 wrote to memory of 2164	3360	bfe341b4ad6b30fbc711741e5c2fc8a6_JaffaCakes118.exe	107
PID 3360 wrote to memory of 2164	3360	bfe341b4ad6b30fbc711741e5c2fc8a6_JaffaCakes118.exe	107
PID 3360 wrote to memory of 2164	3360	bfe341b4ad6b30fbc711741e5c2fc8a6_JaffaCakes118.exe	107
PID 3360 wrote to memory of 3184	3360	bfe341b4ad6b30fbc711741e5c2fc8a6_JaffaCakes118.exe	109
PID 3360 wrote to memory of 3184	3360	bfe341b4ad6b30fbc711741e5c2fc8a6_JaffaCakes118.exe	109
PID 3360 wrote to memory of 3184	3360	bfe341b4ad6b30fbc711741e5c2fc8a6_JaffaCakes118.exe	109
PID 3360 wrote to memory of 368	3360	bfe341b4ad6b30fbc711741e5c2fc8a6_JaffaCakes118.exe	112
PID 3360 wrote to memory of 368	3360	bfe341b4ad6b30fbc711741e5c2fc8a6_JaffaCakes118.exe	112
PID 3360 wrote to memory of 368	3360	bfe341b4ad6b30fbc711741e5c2fc8a6_JaffaCakes118.exe	112
PID 4792 wrote to memory of 1656	4792	tivrdcvh.exe	117
PID 4792 wrote to memory of 1656	4792	tivrdcvh.exe	117
PID 4792 wrote to memory of 1656	4792	tivrdcvh.exe	117
PID 4792 wrote to memory of 1656	4792	tivrdcvh.exe	117
PID 4792 wrote to memory of 1656	4792	tivrdcvh.exe	117

C:\Users\Admin\AppData\Local\Temp\bfe341b4ad6b30fbc711741e5c2fc8a6_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\bfe341b4ad6b30fbc711741e5c2fc8a6_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3360
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\qbkptbt\
  2⤵
  PID:3552
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\tivrdcvh.exe" C:\Windows\SysWOW64\qbkptbt\
  2⤵
  PID:908
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create qbkptbt binPath= "C:\Windows\SysWOW64\qbkptbt\tivrdcvh.exe /d\"C:\Users\Admin\AppData\Local\Temp\bfe341b4ad6b30fbc711741e5c2fc8a6_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  PID:3404
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description qbkptbt "wifi internet conection"
  2⤵
  - Launches sc.exe
  PID:2164
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start qbkptbt
  2⤵
  - Launches sc.exe
  PID:3184
- C:\Windows\SysWOW64\netsh.exe
  "C:\Windows\System32\netsh.exe" advfirewall firewall add rule name="Host-process for services of Windows" dir=in action=allow program="C:\Windows\SysWOW64\svchost.exe" enable=yes>nul
  2⤵
  - Modifies Windows Firewall
  PID:368

C:\Windows\SysWOW64\qbkptbt\tivrdcvh.exe
C:\Windows\SysWOW64\qbkptbt\tivrdcvh.exe /d"C:\Users\Admin\AppData\Local\Temp\bfe341b4ad6b30fbc711741e5c2fc8a6_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4792
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  PID:1656

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 --no-appcompat-clear --mojo-platform-channel-handle=4056 --field-trial-handle=2356,i,13261194862334667799,7441241219475888176,262144 --variations-seed-version /prefetch:8
1⤵
PID:2616

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

Create or Modify System Process

T1543

Windows Service

T1543.003

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Defense Evasion

Impair Defenses

T1562

Disable or Modify System Firewall

T1562.004

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

tivrdcvh.exe

Path C:\Users\Admin\AppData\Local\Temp\tivrdcvh.exe
Size 13.4MB
SHA256 7aa5cc0655e380a6ded6fb790ac44c548f9f140d3e45506b1ec1da5471c77528
MD5 53d1fc1502c6e5bc7b8b7d6cf85877bf
SHA1 aa5bd8bd7d68eafcfa3521771846dd8e7ac90e50
SHA512 97fe31f8c4b7721d9efdfc2424993b9e2d6ce5142ac515fb4e4690a458095711f6dfab3430399aa3eec8fd6d0b0106b5a99d3ac154dccdcb5d3d0357cafdf7b9
SSDEEP 12288:zb22XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXn:n2
MD5 SHA1 SHA512 SSDEEP

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memory/1656-16-0x0000000000E70000-0x0000000000E85000-memory.dmp

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memory/1656-20-0x0000000000E70000-0x0000000000E85000-memory.dmp

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memory/1656-12-0x0000000000E70000-0x0000000000E85000-memory.dmp

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memory/1656-19-0x0000000000E70000-0x0000000000E85000-memory.dmp

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memory/1656-18-0x0000000000E70000-0x0000000000E85000-memory.dmp

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memory/3360-2-0x00000000021F0000-0x0000000002203000-memory.dmp

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memory/3360-4-0x0000000000400000-0x00000000004A9000-memory.dmp

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memory/3360-8-0x0000000000400000-0x00000000004A9000-memory.dmp

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memory/3360-9-0x00000000021F0000-0x0000000002203000-memory.dmp

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memory/3360-1-0x0000000000610000-0x0000000000710000-memory.dmp

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memory/4792-10-0x0000000000400000-0x00000000004A9000-memory.dmp

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memory/4792-14-0x0000000000400000-0x00000000004A9000-memory.dmp

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memory/4792-11-0x0000000000630000-0x0000000000730000-memory.dmp

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memory/4792-13-0x0000000000400000-0x00000000004A9000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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