tofsee | ba5b80a71608428f352330b2335d8cf436b836d7545852cfc1b81460861ce3de

General

Target
ba5b80a71608428f352330b2335d8cf436b836d7545852cfc1b81460861ce3de.exe
Size 12.3MB
Sample261109-z491fa112m
SHA256 ba5b80a71608428f352330b2335d8cf436b836d7545852cfc1b81460861ce3de
MD5 32636269eb76ee2457102852737e6f1c
SHA1 5ec91f14c5ce2759d696b701d62cb491134a5057
SHA512 fba8dd50a4b10bb57f8de192e6df45205664615b9d1af5fd8b0d64cc780c252ab33691bcf850cf80a4836105183b73e11ec98d08bec918becb940d5eb458d3c2
SSDEEP 49152:0Bp2Jrvrvrvrvrvrvrvrvrvrvrvrvrvrvrvrvrvrvrvrvrvrvrvrvrvrvrvrvrvr:0K
TLSH
T146D6436676D86ED9D0CA0FBC09A1C42B5DECFB34043A553096D1504F98AE78A973CBB3
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

defense_evasion discovery execution tofsee persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

defeatwax.ru
refabyd.info

Signatures

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

Modifies Windows Firewall 2 TTPs 1 IoCs

defense_evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
4800	netsh.exe

Creates new service(s) 2 TTPs
persistence execution

Windows Service
T1543.003

Service Execution
T1569.002

Executes dropped EXE 1 IoCs

pid	Process
2692	qcjdiobj.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2692 set thread context of 4632	2692	qcjdiobj.exe	100

Launches sc.exe 3 IoCs

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

pid	Process
4636	sc.exe
1884	sc.exe
5616	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

Executes a command shell one-liner 1 TTPs 2 IoCs

Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

execution

Windows Command Shell

T1059.003

pid	Process
4688	cmd.exe
2116	cmd.exe

System Location Discovery: System Language Discovery 1 TTPs 8 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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	qcjdiobj.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ba5b80a71608428f352330b2335d8cf436b836d7545852cfc1b81460861ce3de.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 4248 wrote to memory of 4688	4248	ba5b80a71608428f352330b2335d8cf436b836d7545852cfc1b81460861ce3de.exe	88
PID 4248 wrote to memory of 2116	4248	ba5b80a71608428f352330b2335d8cf436b836d7545852cfc1b81460861ce3de.exe	90
PID 4248 wrote to memory of 4636	4248	ba5b80a71608428f352330b2335d8cf436b836d7545852cfc1b81460861ce3de.exe	92
PID 4248 wrote to memory of 1884	4248	ba5b80a71608428f352330b2335d8cf436b836d7545852cfc1b81460861ce3de.exe	94
PID 4248 wrote to memory of 5616	4248	ba5b80a71608428f352330b2335d8cf436b836d7545852cfc1b81460861ce3de.exe	97
PID 2692 wrote to memory of 4632	2692	qcjdiobj.exe	100
PID 2692 wrote to memory of 4632	2692	qcjdiobj.exe	100
PID 4248 wrote to memory of 4800	4248	ba5b80a71608428f352330b2335d8cf436b836d7545852cfc1b81460861ce3de.exe	101

C:\Users\Admin\AppData\Local\Temp\ba5b80a71608428f352330b2335d8cf436b836d7545852cfc1b81460861ce3de.exe
"C:\Users\Admin\AppData\Local\Temp\ba5b80a71608428f352330b2335d8cf436b836d7545852cfc1b81460861ce3de.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4248
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\uegfvdfi\
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  PID:4688
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\qcjdiobj.exe" C:\Windows\SysWOW64\uegfvdfi\
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  PID:2116
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create uegfvdfi binPath= "C:\Windows\SysWOW64\uegfvdfi\qcjdiobj.exe /d\"C:\Users\Admin\AppData\Local\Temp\ba5b80a71608428f352330b2335d8cf436b836d7545852cfc1b81460861ce3de.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4636
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description uegfvdfi "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1884
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start uegfvdfi
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:5616
- 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:4800

C:\Windows\SysWOW64\uegfvdfi\qcjdiobj.exe
C:\Windows\SysWOW64\uegfvdfi\qcjdiobj.exe /d"C:\Users\Admin\AppData\Local\Temp\ba5b80a71608428f352330b2335d8cf436b836d7545852cfc1b81460861ce3de.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2692
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  PID:4632

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

Windows Command Shell

1

T1059.003

System Services

1

T1569

Service Execution

1

T1569.002

Persistence

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Privilege Escalation

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Defense Evasion

Impair Defenses

1

T1562

Disable or Modify System Firewall

1

T1562.004

Credential Access

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

qcjdiobj.exe

Path C:\Users\Admin\AppData\Local\Temp\qcjdiobj.exe
Size 14.7MB
SHA256 509e9c3f67361682ecf7eb548761fad4c360195a4b33680e400810595a8a4961
MD5 86ba940402383610aa136ca53a91c7c5
SHA1 9ebc0e2f6ed30f8426df09ee95c0f8bca762a4e7
SHA512 ab0ca65f6fb53288dfcb88ddc8dd016feadf461ff010167588c28052e399609508615f2daeb06165bf4962ceafa603494e90d70b7b35db7d4d5209bc3a1ab679
SSDEEP 49152:sBp2JrvrvrvrvrvrvrvrvrvrvrvrvrvrvrvrvrvrvrvrvrvrvrvrvrvrvrvrvrvX:sK
TLSH
T168F6436676D86ED9D0CA0FBC09A1C42B5DECFB34043A553096D1504F98AE78A973CBB3
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/2692-5-0x0000000000400000-0x0000000000449000-memory.dmp

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memory/2692-8-0x0000000000400000-0x0000000000449000-memory.dmp

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memory/4248-0-0x0000000000400000-0x0000000000449000-memory.dmp

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memory/4248-10-0x0000000000400000-0x0000000000449000-memory.dmp

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memory/4632-6-0x0000000000520000-0x0000000000569000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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