tofsee | fdbbaf0c8b94aee61088e99700484f54fdf62ce20954195c4b92fde85e732c57

Analysis

max time kernel
151s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
28/03/2024, 08:56

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General

Target
01b5b716cf9b9802b46635638d889a85_JaffaCakes118.exe
Size 13.9MB
Sample240328-kwcbwaee92
SHA256 fdbbaf0c8b94aee61088e99700484f54fdf62ce20954195c4b92fde85e732c57
MD5 01b5b716cf9b9802b46635638d889a85
SHA1 782283c2d14476450c01cf334894c8b013879fc3
SHA512 a1adca70a104df4dee66443817d732a0e1ed0d497c833e8b7f7428fad332166946e981197740910c723bb11026aee24737e9a4b8674f9698f99905c1f67f3abc
SSDEEP 98304:dEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE3:
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
5100	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\nfshqgif\ImagePath = "C:\\Windows\\SysWOW64\\nfshqgif\\wdbmrmao.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-1-5-21-513485977-2495024337-1260977654-1000\Control Panel\International\Geo\Nation	01b5b716cf9b9802b46635638d889a85_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
4216	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4032	wdbmrmao.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4032 set thread context of 4216	4032	wdbmrmao.exe	109

Launches sc.exe 3 IoCs

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

pid	Process
4156	sc.exe
1096	sc.exe
4388	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
2988	3868	WerFault.exe	84
2192	4032	WerFault.exe	102

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3868 wrote to memory of 1752	3868	01b5b716cf9b9802b46635638d889a85_JaffaCakes118.exe	90
PID 3868 wrote to memory of 1752	3868	01b5b716cf9b9802b46635638d889a85_JaffaCakes118.exe	90
PID 3868 wrote to memory of 1752	3868	01b5b716cf9b9802b46635638d889a85_JaffaCakes118.exe	90
PID 3868 wrote to memory of 1368	3868	01b5b716cf9b9802b46635638d889a85_JaffaCakes118.exe	93
PID 3868 wrote to memory of 1368	3868	01b5b716cf9b9802b46635638d889a85_JaffaCakes118.exe	93
PID 3868 wrote to memory of 1368	3868	01b5b716cf9b9802b46635638d889a85_JaffaCakes118.exe	93
PID 3868 wrote to memory of 4156	3868	01b5b716cf9b9802b46635638d889a85_JaffaCakes118.exe	96
PID 3868 wrote to memory of 4156	3868	01b5b716cf9b9802b46635638d889a85_JaffaCakes118.exe	96
PID 3868 wrote to memory of 4156	3868	01b5b716cf9b9802b46635638d889a85_JaffaCakes118.exe	96
PID 3868 wrote to memory of 1096	3868	01b5b716cf9b9802b46635638d889a85_JaffaCakes118.exe	98
PID 3868 wrote to memory of 1096	3868	01b5b716cf9b9802b46635638d889a85_JaffaCakes118.exe	98
PID 3868 wrote to memory of 1096	3868	01b5b716cf9b9802b46635638d889a85_JaffaCakes118.exe	98
PID 3868 wrote to memory of 4388	3868	01b5b716cf9b9802b46635638d889a85_JaffaCakes118.exe	100
PID 3868 wrote to memory of 4388	3868	01b5b716cf9b9802b46635638d889a85_JaffaCakes118.exe	100
PID 3868 wrote to memory of 4388	3868	01b5b716cf9b9802b46635638d889a85_JaffaCakes118.exe	100
PID 3868 wrote to memory of 5100	3868	01b5b716cf9b9802b46635638d889a85_JaffaCakes118.exe	103
PID 3868 wrote to memory of 5100	3868	01b5b716cf9b9802b46635638d889a85_JaffaCakes118.exe	103
PID 3868 wrote to memory of 5100	3868	01b5b716cf9b9802b46635638d889a85_JaffaCakes118.exe	103
PID 4032 wrote to memory of 4216	4032	wdbmrmao.exe	109
PID 4032 wrote to memory of 4216	4032	wdbmrmao.exe	109
PID 4032 wrote to memory of 4216	4032	wdbmrmao.exe	109
PID 4032 wrote to memory of 4216	4032	wdbmrmao.exe	109
PID 4032 wrote to memory of 4216	4032	wdbmrmao.exe	109

C:\Users\Admin\AppData\Local\Temp\01b5b716cf9b9802b46635638d889a85_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\01b5b716cf9b9802b46635638d889a85_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3868
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\nfshqgif\
  2⤵
  PID:1752
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\wdbmrmao.exe" C:\Windows\SysWOW64\nfshqgif\
  2⤵
  PID:1368
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create nfshqgif binPath= "C:\Windows\SysWOW64\nfshqgif\wdbmrmao.exe /d\"C:\Users\Admin\AppData\Local\Temp\01b5b716cf9b9802b46635638d889a85_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  PID:4156
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description nfshqgif "wifi internet conection"
  2⤵
  - Launches sc.exe
  PID:1096
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start nfshqgif
  2⤵
  - Launches sc.exe
  PID:4388
- 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:5100
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3868 -s 888
  2⤵
  - Program crash
  PID:2988

C:\Windows\SysWOW64\nfshqgif\wdbmrmao.exe
C:\Windows\SysWOW64\nfshqgif\wdbmrmao.exe /d"C:\Users\Admin\AppData\Local\Temp\01b5b716cf9b9802b46635638d889a85_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4032
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  PID:4216
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4032 -s 512
  2⤵
  - Program crash
  PID:2192

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 3868 -ip 3868
1⤵
PID:4604

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 492 -p 4032 -ip 4032
1⤵
PID:1952

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

wdbmrmao.exe

Path C:\Users\Admin\AppData\Local\Temp\wdbmrmao.exe
Size 10.8MB
SHA256 257657f2d185184eb49a0fa092b1a924dcdc041b00f0c0f1530f6d1db7988260
MD5 709e64e5b65eb7d01ce6693c530b29fc
SHA1 7d8eac2fa004cd1c672f7700274e11641ab6d025
SHA512 46727f68781f4a376103f948c371190813f8bcbbe3d18d3fc2e32e2286787dd1645a92d7f8f16118fa92ad2af5d35bdfd397762ce7bad63f076ad74accadc624
SSDEEP 98304:eEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE3:
MD5 SHA1 SHA512 SSDEEP

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memory/3868-1-0x00000000005F0000-0x00000000006F0000-memory.dmp

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memory/3868-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

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memory/3868-4-0x0000000000400000-0x0000000000448000-memory.dmp

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memory/3868-9-0x00000000001C0000-0x00000000001D3000-memory.dmp

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memory/3868-8-0x0000000000400000-0x0000000000448000-memory.dmp

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memory/4032-10-0x00000000005B0000-0x00000000006B0000-memory.dmp

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memory/4032-11-0x0000000000400000-0x0000000000448000-memory.dmp

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memory/4032-16-0x0000000000400000-0x0000000000448000-memory.dmp

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memory/4216-12-0x00000000012C0000-0x00000000012D5000-memory.dmp

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memory/4216-15-0x00000000012C0000-0x00000000012D5000-memory.dmp

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memory/4216-17-0x00000000012C0000-0x00000000012D5000-memory.dmp

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memory/4216-18-0x00000000012C0000-0x00000000012D5000-memory.dmp

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Analysis

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General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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