tofsee | ace37c47cc71ef8e5653134e51a29ed065812177f254132ab9c858caa3d06314

Analysis

max time kernel
146s
max time network
121s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
04-11-2024 02:36

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General

Target

8eb76d6dc6f67c6743f7d4c0d6c57514_JaffaCakes118.exe
Size

13.4MB
MD5

8eb76d6dc6f67c6743f7d4c0d6c57514
SHA1

b0e9e19362b2ca95fc4aae12878fa09b8777493d
SHA256

ace37c47cc71ef8e5653134e51a29ed065812177f254132ab9c858caa3d06314
SHA512

9e4dcd8ab97c5c9c9648fe5335166009fd3fd93a66c3f8fd5682b4135aa4c425e3be7fc8f8be304b4d52fc57011ee6cad2f7df38f99ec190038609575a753bc4
SSDEEP

49152:XcUGb2222222222222222222222222222222222222222222222222222222222f:XcU

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

43.231.4.7

lazystax.ru

Signatures

Tofsee
Backdoor/botnet which carries out malicious activities based on commands from a C2 server.
trojan tofsee
Tofsee family
tofsee

Windows security bypass 2 TTPs 1 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\SysWOW64\arcpoaio = "0"	svchost.exe

Creates new service(s) 2 TTPs
persistence execution

Windows Service
T1543.003

Service Execution
T1569.002

Modifies Windows Firewall 2 TTPs 1 IoCs

evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
2808	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\arcpoaio\ImagePath = "C:\\Windows\\SysWOW64\\arcpoaio\\dcqsgdew.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
1956	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2940	dcqsgdew.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2940 set thread context of 1956	2940	dcqsgdew.exe	44

Launches sc.exe 3 IoCs

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

pid	Process
2156	sc.exe
2668	sc.exe
2436	sc.exe

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

System Information Discovery
T1082

Event Triggered Execution: Netsh Helper DLL 1 TTPs 3 IoCs

Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.

persistence privilege_escalation

Netsh Helper DLL

T1546.007

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe

System Location Discovery: System Language Discovery 1 TTPs 9 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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	dcqsgdew.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	8eb76d6dc6f67c6743f7d4c0d6c57514_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2224 wrote to memory of 2844	2224	8eb76d6dc6f67c6743f7d4c0d6c57514_JaffaCakes118.exe	31
PID 2224 wrote to memory of 2844	2224	8eb76d6dc6f67c6743f7d4c0d6c57514_JaffaCakes118.exe	31
PID 2224 wrote to memory of 2844	2224	8eb76d6dc6f67c6743f7d4c0d6c57514_JaffaCakes118.exe	31
PID 2224 wrote to memory of 2844	2224	8eb76d6dc6f67c6743f7d4c0d6c57514_JaffaCakes118.exe	31
PID 2224 wrote to memory of 2852	2224	8eb76d6dc6f67c6743f7d4c0d6c57514_JaffaCakes118.exe	33
PID 2224 wrote to memory of 2852	2224	8eb76d6dc6f67c6743f7d4c0d6c57514_JaffaCakes118.exe	33
PID 2224 wrote to memory of 2852	2224	8eb76d6dc6f67c6743f7d4c0d6c57514_JaffaCakes118.exe	33
PID 2224 wrote to memory of 2852	2224	8eb76d6dc6f67c6743f7d4c0d6c57514_JaffaCakes118.exe	33
PID 2224 wrote to memory of 2156	2224	8eb76d6dc6f67c6743f7d4c0d6c57514_JaffaCakes118.exe	35
PID 2224 wrote to memory of 2156	2224	8eb76d6dc6f67c6743f7d4c0d6c57514_JaffaCakes118.exe	35
PID 2224 wrote to memory of 2156	2224	8eb76d6dc6f67c6743f7d4c0d6c57514_JaffaCakes118.exe	35
PID 2224 wrote to memory of 2156	2224	8eb76d6dc6f67c6743f7d4c0d6c57514_JaffaCakes118.exe	35
PID 2224 wrote to memory of 2668	2224	8eb76d6dc6f67c6743f7d4c0d6c57514_JaffaCakes118.exe	37
PID 2224 wrote to memory of 2668	2224	8eb76d6dc6f67c6743f7d4c0d6c57514_JaffaCakes118.exe	37
PID 2224 wrote to memory of 2668	2224	8eb76d6dc6f67c6743f7d4c0d6c57514_JaffaCakes118.exe	37
PID 2224 wrote to memory of 2668	2224	8eb76d6dc6f67c6743f7d4c0d6c57514_JaffaCakes118.exe	37
PID 2224 wrote to memory of 2436	2224	8eb76d6dc6f67c6743f7d4c0d6c57514_JaffaCakes118.exe	39
PID 2224 wrote to memory of 2436	2224	8eb76d6dc6f67c6743f7d4c0d6c57514_JaffaCakes118.exe	39
PID 2224 wrote to memory of 2436	2224	8eb76d6dc6f67c6743f7d4c0d6c57514_JaffaCakes118.exe	39
PID 2224 wrote to memory of 2436	2224	8eb76d6dc6f67c6743f7d4c0d6c57514_JaffaCakes118.exe	39
PID 2224 wrote to memory of 2808	2224	8eb76d6dc6f67c6743f7d4c0d6c57514_JaffaCakes118.exe	42
PID 2224 wrote to memory of 2808	2224	8eb76d6dc6f67c6743f7d4c0d6c57514_JaffaCakes118.exe	42
PID 2224 wrote to memory of 2808	2224	8eb76d6dc6f67c6743f7d4c0d6c57514_JaffaCakes118.exe	42
PID 2224 wrote to memory of 2808	2224	8eb76d6dc6f67c6743f7d4c0d6c57514_JaffaCakes118.exe	42
PID 2940 wrote to memory of 1956	2940	dcqsgdew.exe	44
PID 2940 wrote to memory of 1956	2940	dcqsgdew.exe	44
PID 2940 wrote to memory of 1956	2940	dcqsgdew.exe	44
PID 2940 wrote to memory of 1956	2940	dcqsgdew.exe	44
PID 2940 wrote to memory of 1956	2940	dcqsgdew.exe	44
PID 2940 wrote to memory of 1956	2940	dcqsgdew.exe	44

C:\Users\Admin\AppData\Local\Temp\8eb76d6dc6f67c6743f7d4c0d6c57514_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\8eb76d6dc6f67c6743f7d4c0d6c57514_JaffaCakes118.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2224
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\arcpoaio\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2844
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\dcqsgdew.exe" C:\Windows\SysWOW64\arcpoaio\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2852
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create arcpoaio binPath= "C:\Windows\SysWOW64\arcpoaio\dcqsgdew.exe /d\"C:\Users\Admin\AppData\Local\Temp\8eb76d6dc6f67c6743f7d4c0d6c57514_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2156
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description arcpoaio "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2668
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start arcpoaio
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2436
- 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
  - Event Triggered Execution: Netsh Helper DLL
  - System Location Discovery: System Language Discovery
  PID:2808

C:\Windows\SysWOW64\arcpoaio\dcqsgdew.exe
C:\Windows\SysWOW64\arcpoaio\dcqsgdew.exe /d"C:\Users\Admin\AppData\Local\Temp\8eb76d6dc6f67c6743f7d4c0d6c57514_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2940
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Windows security bypass
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1956

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

System Services

T1569

Service Execution

T1569.002

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

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

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Defense Evasion

Impair Defenses

T1562

Disable or Modify System Firewall

T1562.004

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Credential Access

Discovery

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\dcqsgdew.exe

Filesize
10.6MB

MD5
e5f493904c1c1a0b5b03d94b37aae009

SHA1
b1cceffcdd140ea7d99f75f3ca12e207be8c0bee

SHA256
468f06c8f2c366bb4952d3d81a774d45b1635fbe431309466f2a6519b73a66a1

SHA512
d827d5b8534e2817de70a1160d38930afc64dc9e8a386019aaf034d13d08883048513d9ea4d90b05686a0218343b5b824443e2739e7f8baeac25994cae59b642

Download Submit
memory/1956-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1956-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1956-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1956-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1956-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2224-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2224-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2224-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2224-8-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2224-7-0x0000000000400000-0x0000000000472000-memory.dmp

Filesize
456KB

Download
memory/2224-1-0x00000000008C0000-0x00000000009C0000-memory.dmp

Filesize
1024KB

Download
memory/2940-16-0x0000000000400000-0x0000000000472000-memory.dmp

Filesize
456KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads