tofsee | 2d2164bac6935ba3b38573e69f323ec242b3a259ecb06396964f57e3c93d7c6e

General

Target

2d2164bac6935ba3b38573e69f323ec242b3a259ecb06396964f57e3c93d7c6eN.exe
Size

355KB
MD5

4ade9bccd0b2b9447ff9dbb9c3880830
SHA1

52aef011732da2f9fea1ee555d370a119749ccd0
SHA256

2d2164bac6935ba3b38573e69f323ec242b3a259ecb06396964f57e3c93d7c6e
SHA512

06103380806a02eb19d3f102d6b69f43f3483dc1db6fa48ca53ec8d077b4a6fa35dbb1fc6c438c51ef45f10765a06d2497b0f8d38ae8ac8049106f1bd99c33e1
SSDEEP

6144:hvo5HY2USvj5R/i2gCiX0oH1VmyerYDn1QqaFZczX3V5wRjejHH5TAb:hA5HY2USr5R/i2gCy0oVVmyerK1/aFZp

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

defeatwax.ru

refabyd.info

Signatures

Tofsee
Backdoor/botnet which carries out malicious activities based on commands from a C2 server.
trojan tofsee
Tofsee family
tofsee
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
4328	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\ovkhitwe\ImagePath = "C:\\Windows\\SysWOW64\\ovkhitwe\\qvrjhkw.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-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	2d2164bac6935ba3b38573e69f323ec242b3a259ecb06396964f57e3c93d7c6eN.exe

Deletes itself 1 IoCs

pid	Process
4028	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2620	qvrjhkw.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2620 set thread context of 4028	2620	qvrjhkw.exe	101

Launches sc.exe 3 IoCs

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

pid	Process
1972	sc.exe
2836	sc.exe
4600	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

Program crash 2 IoCs

pid	pid_target	Process	procid_target
2436	4236	WerFault.exe	82
4512	2620	WerFault.exe	94

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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2d2164bac6935ba3b38573e69f323ec242b3a259ecb06396964f57e3c93d7c6eN.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	qvrjhkw.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4236 wrote to memory of 456	4236	2d2164bac6935ba3b38573e69f323ec242b3a259ecb06396964f57e3c93d7c6eN.exe	83
PID 4236 wrote to memory of 456	4236	2d2164bac6935ba3b38573e69f323ec242b3a259ecb06396964f57e3c93d7c6eN.exe	83
PID 4236 wrote to memory of 456	4236	2d2164bac6935ba3b38573e69f323ec242b3a259ecb06396964f57e3c93d7c6eN.exe	83
PID 4236 wrote to memory of 960	4236	2d2164bac6935ba3b38573e69f323ec242b3a259ecb06396964f57e3c93d7c6eN.exe	85
PID 4236 wrote to memory of 960	4236	2d2164bac6935ba3b38573e69f323ec242b3a259ecb06396964f57e3c93d7c6eN.exe	85
PID 4236 wrote to memory of 960	4236	2d2164bac6935ba3b38573e69f323ec242b3a259ecb06396964f57e3c93d7c6eN.exe	85
PID 4236 wrote to memory of 1972	4236	2d2164bac6935ba3b38573e69f323ec242b3a259ecb06396964f57e3c93d7c6eN.exe	87
PID 4236 wrote to memory of 1972	4236	2d2164bac6935ba3b38573e69f323ec242b3a259ecb06396964f57e3c93d7c6eN.exe	87
PID 4236 wrote to memory of 1972	4236	2d2164bac6935ba3b38573e69f323ec242b3a259ecb06396964f57e3c93d7c6eN.exe	87
PID 4236 wrote to memory of 2836	4236	2d2164bac6935ba3b38573e69f323ec242b3a259ecb06396964f57e3c93d7c6eN.exe	89
PID 4236 wrote to memory of 2836	4236	2d2164bac6935ba3b38573e69f323ec242b3a259ecb06396964f57e3c93d7c6eN.exe	89
PID 4236 wrote to memory of 2836	4236	2d2164bac6935ba3b38573e69f323ec242b3a259ecb06396964f57e3c93d7c6eN.exe	89
PID 4236 wrote to memory of 4600	4236	2d2164bac6935ba3b38573e69f323ec242b3a259ecb06396964f57e3c93d7c6eN.exe	92
PID 4236 wrote to memory of 4600	4236	2d2164bac6935ba3b38573e69f323ec242b3a259ecb06396964f57e3c93d7c6eN.exe	92
PID 4236 wrote to memory of 4600	4236	2d2164bac6935ba3b38573e69f323ec242b3a259ecb06396964f57e3c93d7c6eN.exe	92
PID 4236 wrote to memory of 4328	4236	2d2164bac6935ba3b38573e69f323ec242b3a259ecb06396964f57e3c93d7c6eN.exe	95
PID 4236 wrote to memory of 4328	4236	2d2164bac6935ba3b38573e69f323ec242b3a259ecb06396964f57e3c93d7c6eN.exe	95
PID 4236 wrote to memory of 4328	4236	2d2164bac6935ba3b38573e69f323ec242b3a259ecb06396964f57e3c93d7c6eN.exe	95
PID 2620 wrote to memory of 4028	2620	qvrjhkw.exe	101
PID 2620 wrote to memory of 4028	2620	qvrjhkw.exe	101
PID 2620 wrote to memory of 4028	2620	qvrjhkw.exe	101
PID 2620 wrote to memory of 4028	2620	qvrjhkw.exe	101
PID 2620 wrote to memory of 4028	2620	qvrjhkw.exe	101

C:\Users\Admin\AppData\Local\Temp\2d2164bac6935ba3b38573e69f323ec242b3a259ecb06396964f57e3c93d7c6eN.exe
"C:\Users\Admin\AppData\Local\Temp\2d2164bac6935ba3b38573e69f323ec242b3a259ecb06396964f57e3c93d7c6eN.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4236
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ovkhitwe\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:456
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\qvrjhkw.exe" C:\Windows\SysWOW64\ovkhitwe\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:960
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create ovkhitwe binPath= "C:\Windows\SysWOW64\ovkhitwe\qvrjhkw.exe /d\"C:\Users\Admin\AppData\Local\Temp\2d2164bac6935ba3b38573e69f323ec242b3a259ecb06396964f57e3c93d7c6eN.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1972
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description ovkhitwe "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2836
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start ovkhitwe
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4600
- 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:4328
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4236 -s 1036
  2⤵
  - Program crash
  PID:2436

C:\Windows\SysWOW64\ovkhitwe\qvrjhkw.exe
C:\Windows\SysWOW64\ovkhitwe\qvrjhkw.exe /d"C:\Users\Admin\AppData\Local\Temp\2d2164bac6935ba3b38573e69f323ec242b3a259ecb06396964f57e3c93d7c6eN.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2620
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4028
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2620 -s 516
  2⤵
  - Program crash
  PID:4512

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 4236 -ip 4236
1⤵
PID:4040

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 552 -p 2620 -ip 2620
1⤵
PID:4000

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

System Services

1

T1569

Service Execution

1

T1569.002

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

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

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

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

Modify Registry

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

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

C:\Users\Admin\AppData\Local\Temp\qvrjhkw.exe

Filesize
10.3MB

MD5
246d6c6ebd5f01920de0866e4fe2b746

SHA1
e0e4397bc747ac3651f75a7dd40e71f414006f23

SHA256
2cd08edf50b91937a1e71ef346bab12cd5cebe767c507a13f267bdd72d3467ef

SHA512
f203fd0c692e22e102ba54da47054a39749ccab753cbbd03d25cec464ec385efe467dfa2adf1a941734a8812d38a979b86ea3fc0d084569f66d2f7c17d85c23c

Download Submit
memory/2620-14-0x0000000000400000-0x00000000016CE000-memory.dmp

Filesize
18.8MB

Download
memory/2620-17-0x0000000000400000-0x00000000016CE000-memory.dmp

Filesize
18.8MB

Download
memory/4028-11-0x0000000000AC0000-0x0000000000AD5000-memory.dmp

Filesize
84KB

Download
memory/4028-13-0x0000000000AC0000-0x0000000000AD5000-memory.dmp

Filesize
84KB

Download
memory/4028-15-0x0000000000AC0000-0x0000000000AD5000-memory.dmp

Filesize
84KB

Download
memory/4236-1-0x0000000001760000-0x0000000001860000-memory.dmp

Filesize
1024KB

Download
memory/4236-2-0x0000000003410000-0x0000000003423000-memory.dmp

Filesize
76KB

Download
memory/4236-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4236-9-0x0000000003410000-0x0000000003423000-memory.dmp

Filesize
76KB

Download
memory/4236-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4236-8-0x0000000000400000-0x00000000016CE000-memory.dmp

Filesize
18.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads