tofsee | 701057420881654468607bc906d733c388db28b56eb2e81293a1910264aadba6

Analysis

max time kernel
155s
max time network
162s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
01/04/2024, 19:16

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General

Target
7839715f4fff3d259ee61760bda3706e_JaffaCakes118.exe
Size 13.8MB
Sample240401-xy5gnade95
SHA256 701057420881654468607bc906d733c388db28b56eb2e81293a1910264aadba6
MD5 7839715f4fff3d259ee61760bda3706e
SHA1 e98a1594a5bf307a2b8134170919dd7a9cf50b1b
SHA512 0d7e85845cfb8e895e023e6644cc22ecb8b35eb3c1479f0037fbb77263d66ac46cfc27950ff0d6a97b986b398185d54b014ddcbc294f97de34eceb609a828d37
SSDEEP 196608:bFIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII0:b
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
2444	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\swgurlwg\ImagePath = "C:\\Windows\\SysWOW64\\swgurlwg\\bnzhhshp.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	7839715f4fff3d259ee61760bda3706e_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
380	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1392	bnzhhshp.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1392 set thread context of 380	1392	bnzhhshp.exe	116

Launches sc.exe 3 IoCs

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

pid	Process
432	sc.exe
1160	sc.exe
2240	sc.exe

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

System Information Discovery
T1082

Program crash 2 IoCs

pid	pid_target	Process	procid_target
3536	3980	WerFault.exe	93
4424	1392	WerFault.exe	111

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3980 wrote to memory of 2252	3980	7839715f4fff3d259ee61760bda3706e_JaffaCakes118.exe	96
PID 3980 wrote to memory of 2252	3980	7839715f4fff3d259ee61760bda3706e_JaffaCakes118.exe	96
PID 3980 wrote to memory of 2252	3980	7839715f4fff3d259ee61760bda3706e_JaffaCakes118.exe	96
PID 3980 wrote to memory of 676	3980	7839715f4fff3d259ee61760bda3706e_JaffaCakes118.exe	98
PID 3980 wrote to memory of 676	3980	7839715f4fff3d259ee61760bda3706e_JaffaCakes118.exe	98
PID 3980 wrote to memory of 676	3980	7839715f4fff3d259ee61760bda3706e_JaffaCakes118.exe	98
PID 3980 wrote to memory of 432	3980	7839715f4fff3d259ee61760bda3706e_JaffaCakes118.exe	100
PID 3980 wrote to memory of 432	3980	7839715f4fff3d259ee61760bda3706e_JaffaCakes118.exe	100
PID 3980 wrote to memory of 432	3980	7839715f4fff3d259ee61760bda3706e_JaffaCakes118.exe	100
PID 3980 wrote to memory of 1160	3980	7839715f4fff3d259ee61760bda3706e_JaffaCakes118.exe	102
PID 3980 wrote to memory of 1160	3980	7839715f4fff3d259ee61760bda3706e_JaffaCakes118.exe	102
PID 3980 wrote to memory of 1160	3980	7839715f4fff3d259ee61760bda3706e_JaffaCakes118.exe	102
PID 3980 wrote to memory of 2240	3980	7839715f4fff3d259ee61760bda3706e_JaffaCakes118.exe	104
PID 3980 wrote to memory of 2240	3980	7839715f4fff3d259ee61760bda3706e_JaffaCakes118.exe	104
PID 3980 wrote to memory of 2240	3980	7839715f4fff3d259ee61760bda3706e_JaffaCakes118.exe	104
PID 3980 wrote to memory of 2444	3980	7839715f4fff3d259ee61760bda3706e_JaffaCakes118.exe	108
PID 3980 wrote to memory of 2444	3980	7839715f4fff3d259ee61760bda3706e_JaffaCakes118.exe	108
PID 3980 wrote to memory of 2444	3980	7839715f4fff3d259ee61760bda3706e_JaffaCakes118.exe	108
PID 1392 wrote to memory of 380	1392	bnzhhshp.exe	116
PID 1392 wrote to memory of 380	1392	bnzhhshp.exe	116
PID 1392 wrote to memory of 380	1392	bnzhhshp.exe	116
PID 1392 wrote to memory of 380	1392	bnzhhshp.exe	116
PID 1392 wrote to memory of 380	1392	bnzhhshp.exe	116

C:\Users\Admin\AppData\Local\Temp\7839715f4fff3d259ee61760bda3706e_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\7839715f4fff3d259ee61760bda3706e_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3980
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\swgurlwg\
  2⤵
  PID:2252
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\bnzhhshp.exe" C:\Windows\SysWOW64\swgurlwg\
  2⤵
  PID:676
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create swgurlwg binPath= "C:\Windows\SysWOW64\swgurlwg\bnzhhshp.exe /d\"C:\Users\Admin\AppData\Local\Temp\7839715f4fff3d259ee61760bda3706e_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  PID:432
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description swgurlwg "wifi internet conection"
  2⤵
  - Launches sc.exe
  PID:1160
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start swgurlwg
  2⤵
  - Launches sc.exe
  PID:2240
- 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:2444
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3980 -s 1216
  2⤵
  - Program crash
  PID:3536

C:\Windows\SysWOW64\swgurlwg\bnzhhshp.exe
C:\Windows\SysWOW64\swgurlwg\bnzhhshp.exe /d"C:\Users\Admin\AppData\Local\Temp\7839715f4fff3d259ee61760bda3706e_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1392
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  PID:380
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1392 -s 512
  2⤵
  - Program crash
  PID:4424

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 188 -p 3980 -ip 3980
1⤵
PID:716

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 1392 -ip 1392
1⤵
PID:1500

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=3804 --field-trial-handle=2264,i,15001568551143786084,90255922961447677,262144 --variations-seed-version /prefetch:8
1⤵
PID:4100

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

bnzhhshp.exe

Path C:\Users\Admin\AppData\Local\Temp\bnzhhshp.exe
Size 14.3MB
SHA256 d2c8585575c622f48b3ba1c1fcfd796f07fc68e21dff2d50e2b621011634bc27
MD5 3729af1c58749505fd8e00def7bf2b5e
SHA1 f04f09c9b0aadc9e223dcf673cefdb6387beed92
SHA512 b5330460f84f3c0c9b87069562337b69cf8b2cba3bc52d4e847c13752485212d62288483a33084392ac21e71cf593c8bb01deb74608ef4ed2c1a8ba09f7ea051
SSDEEP 196608:rFIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII:r
MD5 SHA1 SHA512 SSDEEP

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memory/380-16-0x0000000000AE0000-0x0000000000AF5000-memory.dmp

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memory/380-12-0x0000000000AE0000-0x0000000000AF5000-memory.dmp

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memory/380-18-0x0000000000AE0000-0x0000000000AF5000-memory.dmp

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memory/380-19-0x0000000000AE0000-0x0000000000AF5000-memory.dmp

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memory/1392-10-0x0000000000920000-0x0000000000A20000-memory.dmp

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memory/1392-11-0x0000000000400000-0x0000000000871000-memory.dmp

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memory/1392-17-0x0000000000400000-0x0000000000871000-memory.dmp

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memory/3980-3-0x0000000000400000-0x0000000000871000-memory.dmp

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memory/3980-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

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memory/3980-9-0x00000000001C0000-0x00000000001D3000-memory.dmp

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memory/3980-8-0x0000000000400000-0x0000000000871000-memory.dmp

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memory/3980-1-0x0000000000910000-0x0000000000A10000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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